CN216519270U

CN216519270U - Anti-impact universal joint

Info

Publication number: CN216519270U
Application number: CN202220022489.2U
Authority: CN
Inventors: 吴志松; 陆友森; 崔承云
Original assignee: Xinghua Sancheng Precision Forging Co ltd
Current assignee: Xinghua Sancheng Precision Forging Co ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-05-13
Anticipated expiration: 2032-01-06

Abstract

The utility model discloses an anti-impact universal joint, which comprises a transmission mechanism, a buffer oil inlet mechanism and a cross shaft, wherein the transmission mechanism comprises a transmission shaft and a slide rod, inner holes are symmetrically formed in the transmission shaft, an oil bin is formed in the transmission shaft, the oil bin is arranged between the two inner holes, an inner key groove is formed in one end of each inner hole, which is far away from the oil bin, an oil storage tank is arranged on the upper surface of a main body of the transmission shaft, the oil storage tank is hollow, the oil storage tank is communicated with the oil bin, a one-way valve is arranged in the oil storage tank and communicated with the oil bin, universal joints on two sides are connected in an internal and external spline mode to ensure the stability of power transmission, meanwhile, a spring is arranged at the connecting part to realize the buffer effect on impact and ensure that the transmission effect is not influenced while the buffer effect is resisted, and the internal lubricating grease is driven to flow according to the deformation amount generated by the buffer each time, and automatic lubrication is realized.

Description

Anti-impact universal joint

Technical Field

The utility model belongs to the technical field of universal joints, and particularly relates to an anti-impact universal joint.

Background

The universal joint is a part for realizing variable angle power transmission, is used for changing the position of the transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system. The universal joint is combined with a transmission shaft and is called a universal joint transmission device. On a vehicle driven by a rear wheel of a front engine, a universal joint transmission device is arranged between an output shaft of a transmission and an input shaft of a main speed reducer of a drive axle; the transmission shaft is omitted in a vehicle driven by a front engine front wheel, the universal joint is installed between a front axle half shaft and wheels which are both responsible for driving and steering, but the universal joint is mainly connected to make up the angle difference of an input end and an output end, when the vehicle is used on the vehicle, the vehicle can transversely bump due to uneven road surface, then the universal joint is impacted, the surface of the universal joint is cracked due to long-time impact, the service life of the universal joint is shortened, and the transmission effect is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a compression resistant universal joint to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: an anti-impact universal joint comprises a transmission mechanism, a buffering oil inlet mechanism and a cross shaft, wherein the transmission mechanism comprises a transmission shaft and a slide rod, inner holes are symmetrically formed in the transmission shaft, an oil bin is formed in the transmission shaft and is arranged between the two inner holes, an inner key groove is formed in one end, away from the oil bin, of the two inner holes, an oil storage tank is arranged on the upper surface of a main body of the transmission shaft, the oil storage tank is hollow, the oil storage tank is communicated with the inside of the oil bin, a one-way valve is arranged on the oil storage tank and communicated with the oil bin, the buffering oil inlet mechanism comprises a connecting shaft and a buffering spring, the connecting shaft is slidably arranged in the inner key groove, the connecting shaft penetrates through the end portion of the transmission shaft, a connecting seat is arranged at one end of the connecting shaft, an extending rod is arranged at the other end of the connecting shaft, the connecting seat is arranged outside the connecting shaft, and the extending rod is arranged in the transmission shaft, the extension rod runs through the hole, the extension rod deviates from the one end of connecting axle and arranges inside the oil sump.

Preferably, the extending rod and the connecting shaft are internally provided with oil channels, oil inlet holes are symmetrically formed in the surface of one end, deviating from the connecting shaft, of the extending rod, and the two oil inlet holes are communicated with the inside of the oil channel.

Preferably, the surface of the connecting seat main body is symmetrically provided with mounting holes, the inside of the connecting seat is symmetrically provided with oil distribution holes, the cross section of each oil distribution hole is L-shaped, one end of each oil distribution hole penetrates through the oil passage, and the other end of each oil distribution hole is communicated with the inside of the mounting hole.

Preferably, extension rod surface cover is equipped with buffer spring, buffer spring one end and connecting shaft tip surface contact, just the buffer spring other end and the contact of hole inner wall.

Preferably, the cross shaft is installed on the inner sides of the two installation holes through bearings, the outer sides of the installation holes are screwed with the dustproof caps through threads, and the end parts of the oil distribution holes are arranged between the cross shaft and the dustproof caps.

Preferably, the slide bar symmetry is installed in batch oil tank main part both sides, the slide bar runs through batch oil tank one side main part, slide bar one side is provided with the push pedal, just the slide bar opposite side is provided with the limiting plate.

Preferably, inside the batch oil tank was arranged in to the push pedal, slide bar surface cover is equipped with return spring, return spring one end and limiting plate contact, just return spring has single and batch oil tank inner wall contact in addition, the batch oil tank upper surface is provided with the oil filler point, the oil filler point link up with batch oil tank inside.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides an anti-impact universal joint, which is characterized in that universal joints on two sides are connected in an internal and external spline mode to ensure the stability of power transmission, meanwhile, a spring is arranged at the connection position to realize the buffer effect on impact and ensure that the transmission effect is not influenced while the buffer is resisted, and the interior of the device also drives the flow of internal lubricating grease according to the deformation generated by the buffer each time, thereby realizing automatic lubrication, prolonging the service life of the universal joint and improving the transmission efficiency.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a longitudinal cross-sectional elevation view of the present invention;

fig. 3 is an enlarged view of the area a of fig. 2 according to the present invention.

In the figure: 1. a transmission mechanism; 101. a drive shaft; 102. an inner bore; 103. an inner keyway; 104. an oil bin; 105. an oil storage tank; 106. an oil filler hole; 107. a one-way valve; 108. a slide bar; 109. pushing the plate; 110. a limiting plate; 111. a return spring; 2. a buffer oil inlet mechanism; 201. a connecting shaft; 202. a connecting seat; 203. mounting holes; 204. an extension rod; 205. an oil road channel; 206. an oil inlet hole; 207. a buffer spring; 208. an oil distributing hole; 209. a dust cap; 3. a cross shaft.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: an anti-impact universal joint comprises a transmission mechanism 1, a buffer oil inlet mechanism 2 and a cross shaft 3, wherein the transmission mechanism 1 comprises a transmission shaft 101 and a slide rod 108, inner holes 102 are symmetrically formed in the transmission shaft 101, an oil bin 104 is formed in the transmission shaft 101, the oil bin 104 is arranged between the two inner holes 102, an inner key groove 103 is formed in one end, away from the oil bin 104, of each inner hole 102, an oil storage tank 105 is arranged on the upper surface of the main body of the transmission shaft 101, the oil storage tank 105 is hollow in the oil bin 104, the oil storage tank 105 is communicated with the oil bin 104 and provided with a one-way valve 107, the buffer oil inlet mechanism 2 comprises a connecting shaft 201 and a buffer spring 207, the connecting shaft 201 is slidably arranged in the inner key groove 103, the connecting shaft 201 penetrates through the end part of the transmission shaft 101, one end of the connecting shaft 201 is provided with a connecting shaft 202, the other end of the connecting shaft 201 is provided with an extension rod 204, and the connecting shaft 202 is arranged outside the transmission shaft 101, the extension rod 204 is arranged inside the transmission shaft 101, the extension rod 204 penetrates through the inner hole 102, and one end of the extension rod 204, which is far away from the connecting shaft 201, is arranged inside the oil bin 104.

In order to ensure that the internal grease may be dispersed into the two mounting holes 203 at the two ends to lubricate the internal bearing, in this embodiment, preferably, oil passages 205 are formed inside the extension rod 204 and the connecting shaft 201, oil inlets 206 are symmetrically formed in the surface of one end, which is away from the connecting shaft 201, of the extension rod 204, the two oil inlets 206 are communicated with the inside of the oil passages 205, mounting holes 203 are symmetrically formed in the surface of the main body of the connecting seat 202, oil distribution holes 208 are symmetrically formed in the inside of the connecting seat 202, the cross section of each oil distribution hole 208 is L-shaped, one end of each oil distribution hole 208 is communicated with the oil passages 205, the other end of each oil distribution hole 208 is communicated with the inside of the mounting hole 203, a buffer spring 207 is sleeved on the surface of the extension rod 204, one end of the buffer spring 207 is in surface contact with the end of the connecting shaft 201, and the other end of the buffer spring 207 is in contact with the inner wall of the inner hole 102.

In order to ensure that no external dust enters the inside of the mounting holes 203 after the mounting is completed, in the present embodiment, it is preferable that the cross shaft 3 is mounted inside the two mounting holes 203 through a bearing, the outside of the mounting holes 203 is screwed with a dust cap 209 through a screw, and the end of the oil distribution hole 208 is disposed between the cross shaft 3 and the dust cap 209.

In order to conveniently add oil into the oil storage tank 105, and simultaneously ensure that the oil inside can be always extruded by the return spring 111, so as to ensure that the oil in the oil bin 104 is pumped to a part of the oil, oil can enter the oil bin, thereby ensuring that the oil bin 104 is always filled with the oil, in the embodiment, preferably, the slide rods 108 are symmetrically installed at two sides of the main body of the oil storage tank 105, the slide rods 108 penetrate through the main body at one side of the oil storage tank 105, the push plate 109 is arranged at one side of the slide rods 108, the limiting plate 110 is arranged at the other side of the slide rods 108, the push plate 109 is arranged inside the oil storage tank 105, the return spring 111 is sleeved on the surface of the slide rods 108, one end of the return spring 111 is in contact with the limiting plate 110, the return spring 111 is in contact with the inner wall of the oil storage tank 105, the oil filling hole 106 is arranged on the upper surface of the oil storage tank 105, and the oil filling hole 106 is communicated with the inside of the oil storage tank 105.

The working principle and the using process of the utility model are as follows: after the installation of the utility model, firstly, the installation and the safety protection of the utility model are checked, then the utility model can be used, firstly, the cross shaft 3 is respectively connected with the installation hole 203, then, after the fixation is carried out through the retainer ring, then, the outer side of the installation hole 203 is screwed with the dustproof cap 209 to prevent dust from entering the installation hole 203, then, the buffer spring 207 is sleeved on the surface of the extension rod 204, the connecting shaft 201 is arranged inside the inner key slot 103 in a sliding way, the connecting shaft 201 is a spline shaft and can be matched with the inner key slot 103, at the moment, the other end of the cross shaft 3 is connected with the input shaft and the output shaft to ensure the stability of the dynamic power transmission, then, lubricating grease is injected into the oil storage tank 105 through the oil injection hole 106, when the lubricating grease enters the oil storage tank 105, the push plate 109 is pushed to two sides, at the moment, the return spring 111 stores the force, and the grease in the oil storage tank 105 can enter the oil bin 104 through the one-way valve 107, the check valve 107 can ensure that grease can only flow into the oil bin 104 and cannot flow out, the amount of grease in the oil bin 104 and the oil storage tank 105 can be judged by observing the distance outside the limiting plate 110 until the oil bin is completely filled, because the cross shafts 3 at two ends are fixed, the connecting shaft 201 cannot move due to the pressure of the grease in the oil bin, the end part of the extension rod 204 can better enter the oil bin 104 during installation, and the oil inlet hole 206 cannot enter, at the moment, because the return spring 111 ensures that the grease in the oil bin always has certain pressure, the universal joint installation is mainly used for making up the angle difference, when the whole device is impacted, the angle difference at two ends can slightly float towards the inside, at the moment, the connecting shaft 201 can move and drive the extension rod 204 to move, the buffer spring 207 stores force, when the oil inlet hole 206 moves towards the inside of the oil bin 104, due to the existence of the check valve 107, when the end of the extension rod 204 enters the oil bin 104, the pressure of the internal grease is increased, but the internal grease cannot flow upwards through the check valve 107, so the internal grease enters the oil path channel 205 through the oil inlet hole 206, when the impact disappears, the buffer spring 207 returns the connecting shaft 201 due to the existence of the buffer spring 207 and drives the oil inlet hole 206 to return, at this time, the oil inlet hole 206 is sealed, the grease inside the oil bin 104 is partially pumped away, but the grease inside the oil storage tank 105 flows into the oil bin 104 due to the existence of the return spring 111, so that the next impact is facilitated, part of the grease enters the oil path channel 205 during each impact, and flows to the oil distribution holes 208 through the oil path channel 205 respectively, and lubricates the mounting bearing of the cross shaft 3 after flowing into the mounting hole 203.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti pressure universal joint, includes drive mechanism (1), buffering oil feed mechanism (2) and cross (3), its characterized in that: drive mechanism (1) includes transmission shaft (101) and slide bar (108), the inside symmetry of transmission shaft (101) is opened there are hole (102), oil bin (104) have been seted up to transmission shaft (101) inside, oil bin (104) are arranged in two between hole (102), two hole (102) deviate from inside interior keyway (103) of having seted up of one end of oil bin (104), transmission shaft (101) main part upper surface is provided with batch oil tank (105), the inside cavity of batch oil tank (105), batch oil tank (105) link up with oil bin (104) inside, batch oil tank (105) and oil bin (104) intercommunication play install check valve (107), buffering oil feed mechanism (2) are including connecting axle (201) and buffer spring (207), connecting axle (201) slidable mounting is inside interior keyway (103), just connecting axle (201) runs through transmission shaft (101) tip, one end of the connecting shaft (201) is provided with a connecting seat (202), the other end of the connecting shaft (201) is provided with an extending rod (204), the connecting seat (202) is arranged on the outer side of the transmission shaft (101), the extending rod (204) is arranged in the transmission shaft (101), the extending rod (204) penetrates through the inner hole (102), and one end, deviating from the connecting shaft (201), of the extending rod (204) is arranged in the oil bin (104).

2. An anti-impact joint according to claim 1, wherein: oil road channel (205) have been seted up to extension rod (204) and connecting axle (201) inside, oil inlet (206) have been seted up to extension rod (204) one end surface that deviates from connecting axle (201) symmetry, two oil inlet (206) link up with oil road channel (205) inside.

3. An anti-impact joint according to claim 2, wherein: the oil distribution device is characterized in that mounting holes (203) are symmetrically formed in the surface of the main body of the connecting base (202), oil distribution holes (208) are symmetrically formed in the connecting base (202), the cross section of each oil distribution hole (208) is L-shaped, one end of each oil distribution hole (208) penetrates through the oil passage (205), and the other end of each oil distribution hole (208) penetrates through the mounting holes (203).

4. An anti-impact joint according to claim 3, wherein: the surface of the extension rod (204) is sleeved with a buffer spring (207), one end of the buffer spring (207) is in surface contact with the end part of the connecting shaft (201), and the other end of the buffer spring (207) is in contact with the inner wall of the inner hole (102).

5. An anti-impact joint according to claim 4, wherein: the universal joint pin (3) is mounted on the inner sides of the two mounting holes (203) through bearings, the outer sides of the mounting holes (203) are screwed with dust caps (209) through threads, and the end parts of the oil distribution holes (208) are arranged between the universal joint pin (3) and the dust caps (209).

6. An anti-impact joint according to claim 1, wherein: slide bar (108) symmetry is installed in batch oil tank (105) main part both sides, slide bar (108) run through batch oil tank (105) one side main part, slide bar (108) one side is provided with push pedal (109), just slide bar (108) opposite side is provided with limiting plate (110).

7. An anti-impact joint according to claim 6, wherein: inside batch oil tank (105) were arranged in push pedal (109), slide bar (108) surface cover is equipped with return spring (111), return spring (111) one end and limiting plate (110) contact, just return spring (111) have single and batch oil tank (105) inner wall contact in addition, batch oil tank (105) upper surface is provided with oil filler point (106), oil filler point (106) link up with batch oil tank (105) inside.