CN116198587A - Steering transmission shaft and vehicle with same - Google Patents
Steering transmission shaft and vehicle with same Download PDFInfo
- Publication number
- CN116198587A CN116198587A CN202310274218.5A CN202310274218A CN116198587A CN 116198587 A CN116198587 A CN 116198587A CN 202310274218 A CN202310274218 A CN 202310274218A CN 116198587 A CN116198587 A CN 116198587A
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- Prior art keywords
- sleeve
- spline
- shaft
- groove
- middle sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention discloses a steering transmission shaft and a vehicle with the same, wherein the steering transmission shaft comprises: a sleeve configured with a sleeve groove extending in an axial direction; the middle sleeve is penetrated in the shaft sleeve groove, a ball mechanism is arranged on the outer circumferential surface of the middle sleeve, the ball mechanism comprises a retainer and balls, the retainer is sleeved on the middle sleeve, the retainer is provided with a plurality of ball mounting grooves which are circumferentially spaced along the middle sleeve and penetrate through the middle sleeve in the radial direction, the balls are accommodated in the ball mounting grooves, the balls are matched with the shaft sleeve groove to roll so as to enable the middle sleeve to stretch and retract relative to the shaft sleeve, and the middle sleeve is provided with spline grooves; and the spline shaft penetrates through the spline groove and is matched with the spline groove to slide, so that the spline shaft stretches and contracts relative to the middle sleeve. The steering transmission shaft provided by the embodiment of the invention has the advantages of high expansion ratio, cab tipping in place, good durability and the like.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a steering transmission shaft and a vehicle with the same.
Background
The steering transmission shaft in the related art adopts a telescopic structure of shaft matching shaft sleeve type, the fixed length of the shaft and the two end joint forks of the shaft sleeve, the ratio of the shortest length to the longest length of the steering transmission shaft is about 50 percent, and after the steering transmission shaft is matched with an electrohydraulic or electric control steering gear system, the telescopic ratio of the traditional steering transmission shaft can not meet the arrangement requirement of the whole vehicle. For heavy truck type, the important structures such as engine, steering system, cooling system are arranged below the cab, and during maintenance, the cab needs to be tilted along the front suspension rotation center of the vehicle body so as to ensure effective maintenance space obtained by parts below the cab. Therefore, the design of the heavy truck steering transmission shaft assembly must meet the performance requirements of different working conditions, the cab cannot be tilted in place due to insufficient elongation of the traditional steering transmission shaft, and the steering transmission shaft is easy to wear in the telescopic process, so that the service life is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a steering drive shaft which has advantages of high expansion ratio, cab rollover in place, good durability, and the like.
The invention also provides a vehicle with the steering transmission shaft.
To achieve the above object, an embodiment according to a first aspect of the present invention proposes a steering drive shaft including: a sleeve configured with a sleeve groove extending in an axial direction; the middle sleeve is penetrated in the shaft sleeve groove, a ball mechanism is arranged on the outer circumferential surface of the middle sleeve, the ball mechanism comprises a retainer and balls, the retainer is sleeved in the middle sleeve, the retainer is provided with a plurality of ball mounting grooves which are circumferentially spaced along the middle sleeve and penetrate through the middle sleeve in the radial direction, the balls are accommodated in the ball mounting grooves, the balls are matched with the shaft sleeve groove to roll so as to enable the middle sleeve to stretch and retract relative to the shaft sleeve, and the other end of the middle sleeve is provided with a spline groove which extends along the axial direction; the spline shaft penetrates through the spline groove and is matched with the spline groove to slide, so that the spline shaft stretches and contracts relative to the middle sleeve; the spline shaft comprises a spline shaft, a middle sleeve, a sealing plug and a sealing plug part, wherein one end of the spline shaft is connected with the sealing plug, the sealing plug is telescopic relative to the spline shaft along the axial direction, the middle sleeve is provided with an accommodating cavity which is communicated with the spline groove and is positioned in the middle sleeve, and the sealing plug part is accommodated in the accommodating cavity and is stopped at the end face of the spline groove, which faces the accommodating cavity.
The steering transmission shaft provided by the embodiment of the invention has the advantages of high expansion ratio, cab tipping in place, good durability and the like.
Further, the outer peripheral surface of the retainer is provided with a plurality of axially extending ribs, the plurality of ribs and the plurality of ball mounting grooves are arranged at intervals along the circumferential direction of the retainer, and the ribs are accommodated in the arc-shaped grooves.
According to some embodiments of the present invention, the inner circumferential surface of the sleeve groove is configured with a plurality of arc grooves that are circumferentially spaced apart and extend in an axial direction, the plurality of arc grooves are respectively disposed corresponding to the balls and the ribs, the balls roll along the extending direction of the arc grooves in cooperation with the corresponding arc grooves, and the ribs are accommodated in the corresponding arc grooves.
According to some embodiments of the invention, the intermediate sleeve comprises: a spline section, the spline groove being formed in an inner peripheral surface of the spline section; and the outer diameter of the intermediate shaft is smaller than that of the spline section, and the ball mechanism is sleeved on the intermediate shaft.
Further, the outer peripheral surface of the intermediate shaft is provided with a plurality of accommodating grooves which are arranged at intervals along the circumferential direction, the inner peripheral surface of the retainer is provided with a plurality of mounting bosses which are matched with the accommodating grooves, and the ball mounting grooves are formed in the mounting bosses.
According to some specific embodiments of the invention, a clamping groove is formed in the outer peripheral surface of one end, far away from the spline section, of the intermediate shaft, a clamping spring is mounted in the clamping groove, and the clamping spring is stopped on the ball mechanism at one end, far away from the spline section, of the intermediate shaft.
According to some embodiments of the invention, one end of the spline shaft is provided with a sealing plug, the sealing plug is arranged in the middle sleeve, the middle sleeve is provided with a containing cavity communicated with the spline groove and arranged in the middle sleeve, and the sealing plug is partially contained in the containing cavity and stops at the end face of the spline groove facing the containing cavity.
Further, one end of the spline shaft in the intermediate sleeve is provided with a seal mounting groove extending along the axial direction of the spline shaft, and the sealing plug is movably mounted in the seal mounting groove and stops against the end face of the spline groove facing the accommodating cavity.
Further, the sealing plug comprises: a seal part which is positioned at one end of the spline shaft and is accommodated in the accommodating cavity to stop at the end face of the spline groove; the sliding part is connected to the sealing part, a sealing installation groove extending along the axial direction of the spline shaft is formed in one end of the spline shaft, which is positioned in the middle sleeve, and the sliding part stretches into the sealing installation groove and can slide along the sealing installation groove.
According to some specific embodiments of the present invention, the sliding portion is configured with a sliding groove penetrating in a radial direction and extending in a length direction, and the spline shaft is configured with a pin shaft penetrating in the radial direction through the seal installation groove and the sliding groove in sequence, and the pin shaft is slidable along the sliding groove.
According to some embodiments of the invention, an inner peripheral surface of an end of the sleeve extending toward the intermediate sleeve is configured with a stop ring that stops against an end surface of the ball mechanism when the intermediate sleeve extends out of the sleeve groove.
An embodiment according to a second aspect of the present invention proposes a vehicle.
According to an embodiment of the second aspect of the present invention, a vehicle includes: according to the steering transmission shaft disclosed by the embodiment of the first aspect of the invention.
According to the vehicle disclosed by the embodiment of the invention, the steering transmission shaft disclosed by the embodiment of the invention has the advantages of high expansion ratio, cab rollover in place, good durability and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a steering drive shaft according to an embodiment of the present invention;
FIG. 2 is a schematic view of an elongated structure of a steering drive shaft according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the position A-A of FIG. 2;
FIG. 4 is a schematic view of the intermediate sleeve and ball mechanism of the steering drive shaft according to an embodiment of the present invention;
FIG. 5 is a schematic view of a ball mechanism and sleeve according to an embodiment of the invention;
fig. 6 is a cross-sectional view of a spline shaft of a steering drive shaft according to an embodiment of the present invention;
fig. 7 is a schematic view of the intermediate sleeve and spline shaft of the steering drive shaft according to an embodiment of the present invention.
Reference numerals:
The sealing plug 310, the accommodating cavity 203, the sealing mounting groove 301, the sealing part 311, the sliding part 312, the sliding groove 313, the pin 314 and the limiting ring 110.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the invention, a "first feature" or "second feature" may include one or more of such features.
In the description of the present invention, "plurality" means two or more.
The following describes a steering drive shaft 1 according to an embodiment of the present invention with reference to the drawings.
As shown in fig. 1 to 7, a steering drive shaft 1 according to an embodiment of the present invention includes a sleeve 100, an intermediate sleeve 200, and a spline shaft 300, the sleeve 100 being configured with a sleeve groove 101 extending in an axial direction. The intermediate sleeve 200 is inserted into the sleeve groove 101, one end of the outer circumferential surface of the intermediate sleeve 200 is sleeved with a ball mechanism 210, the ball mechanism 210 comprises a retainer 211 and balls 212, the retainer 211 is sleeved on the intermediate sleeve 200, the retainer 211 is provided with a plurality of ball mounting grooves 213 which are circumferentially spaced along the intermediate sleeve 200 and penetrate through the intermediate sleeve 200 in the radial direction, the balls 212 are accommodated in the ball mounting grooves 213, the balls 212 are matched with the sleeve groove 101 to roll so as to enable the intermediate sleeve 200 to stretch relative to the sleeve 100, and the other end of the intermediate sleeve 200 is provided with spline grooves 201 extending along the axial direction. Spline shaft 300 is inserted into spline groove 201 and slides in engagement with spline groove 201 to extend and retract spline shaft 300 with respect to intermediate sleeve 200.
As shown in fig. 6 and 7, the end of the spline shaft 300 within the intermediate sleeve 200 is configured with a sealing plug 310, the intermediate sleeve 200 is configured with a receiving cavity 203 communicating with the spline groove 201 and located inside the intermediate sleeve 200, and the sealing plug 310 is partially received in the receiving cavity 203 and stops against the end face of the spline groove 201 facing the receiving cavity 203.
For example, the steering drive shaft 1 is a steering drive shaft 1 for a cargo vehicle, the sleeve 100 of the steering drive shaft 1 is connected to a steering column by a yoke, and the spline shaft 300 is connected to a steering input shaft by a yoke. The sleeve 100, the intermediate sleeve 200 and the spline shaft 300 are circumferentially limited to each other while remaining circumferentially fixed, and rotation of the steering wheel is transmitted through the steering drive shaft 1 to transmit steering to the steering input shaft. The retainer 211 can be made of PP (PA 66) material, is convenient to assemble and light in weight, and utilizes the flexible material of the retainer 221 and the balls 212 to limit, so that micro interference between the balls 212 and the middle sleeve 200 and between the balls 212 and the shaft sleeve 100 in the motion process of the motion steering transmission shaft can be effectively eliminated through micro deformation, abnormal sound is avoided in the motion process, and abrasion between the balls 212 and the middle sleeve 200 and between the balls 212 and the shaft sleeve 100 is reduced.
The cross-sectional area of the receiving cavity 203 is greater than the cross-sectional area of the spline groove 201 and the cross-sectional area of the sealing plug 310 is greater than the cross-sectional area of the spline groove 201 so that the sealing plug 310 remains within the receiving cavity 203. The sealing plug 310 may block an end of the intermediate shaft 230 facing the spline shaft 300, improving sealability between the intermediate sleeve 200 and the spline shaft 300. And the sealing plug 310 is mounted in the accommodation groove 202 to prevent the separation spline shaft 300 from separating from the spline groove 201, and when the spline shaft 300 is shortened to the shortest position after moving into the middle sleeve 200, the sealing plug 310 is padded between the spline shaft 300 and the middle sleeve 200 to prevent abnormal sound generated by collision between the top of the spline shaft 300 and the bottom surface of the cavity accommodation 203 of the middle sleeve 200.
According to the steering transmission shaft 1 of the embodiment of the invention, the steering transmission shaft 1 is constructed into a segmented structure of the shaft sleeve 100, the middle sleeve 200 and the spline shaft 300, the shaft sleeve 100 and the middle sleeve 200 can stretch and retract, and the middle sleeve 200 and the spline shaft 300 can stretch and retract, so that the stretch ratio of the steering transmission shaft 1 is greatly improved, and the shortest length/maximum length of the steering transmission shaft 1 is less than 50%. The intermediate sleeve 200 is provided with a ball mechanism 210, and the balls 212 of the ball mechanism 210 roll against the inner wall of the sleeve groove 101, so that the intermediate sleeve 200 moves axially relative to the sleeve 100. The balls 212 are matched with the shaft sleeve groove 101 to roll, the ball mounting groove 213 plays a role in positioning the balls 212, the balls 212 are always kept in the ball mounting groove 213, and the retainer 211 is kept fixed with the middle sleeve 200, so that friction force between the middle sleeve 200 and the shaft sleeve 100 can be reduced by the balls 212, and reliability of the telescopic process of the steering transmission shaft 1 is improved.
Further, by constructing the spline groove 201 at the other end of the intermediate sleeve 200, the spline shaft 300 is inserted into the spline groove 201 and slides with respect to the spline groove 201, thereby further increasing the expansion range of the expansion-contraction steering transmission shaft 1. Wherein, the ball 212 is in rolling fit with the sleeve groove 101 in point contact, and the spline shaft 300 is in sliding fit with the spline groove 201. The intermediate sleeve 200 has smaller starting force matched with the shaft sleeve 100 through the ball mechanism 210, and the spline shaft 300 has larger starting force matched with the spline groove 201 for sliding.
By utilizing the characteristics that the middle sleeve 200 and the shaft sleeve 100 stretch and the middle sleeve 200 and the spline shaft 300 stretch and the starting force is different, the steering transmission shaft 1 has different stretching effects under different working conditions. When the vehicle normally runs, the cab frequently vibrates up and down in a small range, the floating amount of the cab is small, one end of the steering transmission shaft 1 is connected with a steering column in the cab, the other end of the steering transmission shaft is connected with a steering gear, and the steering transmission shaft 1 needs to stretch and retract adaptively in order to adapt to the floating of the cab. Because the ball mechanism 210 mounted on the middle sleeve 200 has smaller starting force matched with the shaft sleeve 100, the shaft sleeve 100 and the middle sleeve 200 roll along the axial direction relative to the shaft sleeve groove 101 through the balls 212, and the expansion resistance is smaller, thereby achieving the expansion effect of the shaft sleeve 100 and the middle sleeve 200. When the truck is maintained, the cab needs to be tilted, at the moment, the ball mechanism 210 is matched with the shaft sleeve groove 101 to roll, so that the middle sleeve 200 and the shaft sleeve 100 are relatively displaced to the position with the maximum elongation, at the moment, the middle sleeve 200 is continuously matched with the spline shaft 300 to slide through the spline groove 201, so that the middle sleeve 200 and the spline shaft 300 are relatively displaced to the position with the maximum elongation, the steering transmission shaft 1 has a larger expansion ratio, the defect of insufficient elongation of the steering transmission shaft 1 when the cab is tilted is avoided, and the cab is guaranteed to be tilted in place.
Therefore, the steering transmission shaft 1 according to the embodiment of the invention has the advantages of high expansion ratio, cab rollover in place, good durability and the like.
In some embodiments of the present invention, as shown in fig. 4 and 5, the outer circumferential surface of the cage 211 is configured with a plurality of axially extending ribs 214, the plurality of ribs 214 and the plurality of ball mounting grooves 213 are spaced apart along the circumferential direction of the cage 211, and the ribs 214 are received in the arc-shaped grooves 102.
The balls 212 may be arranged in a plurality along the axial direction of the holder 211, the sliding ribs 214 may cooperate with the inner circumferential surface of the sleeve groove 101 to play a certain guiding role, the balls 212 and the sliding ribs 214 are spaced along the circumferential direction of the holder 211, for example, the balls 212 in a plurality of groups are formed, each group of balls 212 is arranged along the axial direction of the holder, and each group of balls 212 forms an included angle of 120 ° to form three groups of balls 212. The plurality of beads 214 also form a plurality of groups, each group of beads 214 being located between adjacent groups of balls 212 in the circumferential direction of the cage 211. The balls 212 roll along the axial direction of the sleeve groove 101, and the ribs 214 are guided in cooperation with the inner peripheral surface of the sleeve groove 101.
In some embodiments of the present invention, as shown in fig. 5, the inner circumferential surface of the sleeve groove 101 is configured with a plurality of arc grooves 102 that are circumferentially spaced apart and axially extending, the plurality of arc grooves 102 are respectively disposed corresponding to the balls 212 and the ribs 214, the balls 212 roll along the extending direction of the arc grooves 102 in cooperation with the corresponding arc grooves 102, and the ribs 214 are accommodated in the corresponding arc grooves 102.
For example, the cross section of the arc-shaped slot 102 is matched with the cross section of the ball 212, and the arc-shaped slot 102 is matched with the shape of the sliding rib 214, so that the ball 212 is matched with the corresponding arc-shaped slot 102 to roll, and meanwhile, the sliding rib 214 is accommodated in the corresponding arc-shaped slot 102 to play a guiding role, the arc-shaped slot 102 is in point contact with the ball 212, the arc-shaped slot 102 limits the ball 212, and the ball 212 is prevented from being separated from the ball mounting slot 213. The sliding rib 214 is matched with the arc-shaped groove 102 to prevent the retainer 211 from rotating with the shaft sleeve 100 and ensure the transmission of the steering transmission shaft 1.
In some embodiments of the present invention, as shown in fig. 4 and 7, the intermediate sleeve 200 includes a spline section 220 and an intermediate shaft 230. Spline grooves 201 are formed in the inner peripheral surface of spline section 220. The outer diameter of the intermediate shaft 230 is smaller than the outer diameter of the spline section 220, and the ball mechanism 210 is sleeved on the intermediate shaft 230.
The spline section 220 may be a spline housing, and the spline section 220 is integrally formed with or welded to the intermediate shaft 230. The diameter of the intermediate shaft 230 is small, and when the ball mechanism 210 is fitted around the intermediate shaft 230, the outer diameter of the ball mechanism 210 is substantially the same as the outer diameter of the spline section 220, so that the intermediate sleeve 200 and the ball mechanism 210 are accommodated together in the sleeve groove 101.
Further, as shown in fig. 6, the outer peripheral surface of the intermediate shaft 230 is configured with a plurality of receiving grooves 202 arranged at intervals in the circumferential direction, the inner peripheral surface of the cage 211 is configured with a plurality of mounting bosses 215 which are fitted with the receiving grooves 202, and the ball mounting grooves 213 are formed in the mounting bosses 215.
The retainer 211 and the intermediate shaft 230 are held fixed in the circumferential direction by the fitting boss 215 being fitted into the accommodation groove 202, and the accommodation groove 202 provides a certain accommodation space for the balls 212, so that the balls 212 are stably held in the ball fitting groove 213.
In some embodiments of the present invention, as shown in fig. 4 and 7, a clamping groove 231 is formed on the outer circumferential surface of the end, away from the spline section 220, of the intermediate shaft 230, and a clamping spring 232 is mounted on the clamping groove 231, and the clamping spring 232 is stopped against the ball mechanism 210 at the end, away from the spline section 220, of the intermediate shaft 230.
After the retainer 211 is sleeved on the intermediate shaft 230, the snap spring 232 prevents the ball mechanism 210 from being separated from the intermediate shaft 230 by stopping the ball mechanism 210. The clamping spring 232 is configured to be clamped in the clamping groove 231 in a C-shaped manner and form an opening, and an opening extending into the clamping spring 232 is formed at one end of the retainer 211, which is far away from the spline section 220, so that the retainer 211 is further prevented from rotating relative to the intermediate shaft 230.
In addition, the outer peripheral surface of the intermediate shaft 230 facing one end of the spline section 220 may be configured with a clamping groove 231, the clamping groove 231 is provided with a clamping spring 232, the upper side and the lower side of the clamping groove can play a limiting role on the ball mechanism 210, and the ball mechanism 210 is axially held between the clamping springs 232 on the upper side and the lower side. And even after the cage 211 is damaged, the snap springs 232 can stop the balls 212, and the balls 212 are not separated from both ends.
In some embodiments of the present invention, as shown in fig. 6 and 7, one end of the spline shaft 300 within the intermediate sleeve 200 is configured with a sealing plug 310, the intermediate sleeve 200 is configured with a receiving cavity 203 communicating with the spline groove 201 and located inside the intermediate sleeve 200, and the sealing plug 310 is partially received in the receiving cavity 203 and stops against the end face of the spline groove 201 facing the receiving cavity 203.
Wherein the cross-sectional area of the receiving cavity 203 is larger than the cross-sectional area of the spline groove 201, and the cross-sectional area of the sealing plug 310 is larger than the cross-sectional area of the spline groove 201, so that the sealing plug 310 is held in the receiving cavity 203. The sealing plug 310 may block an end of the intermediate shaft 230 facing the spline shaft 300, improving sealability between the intermediate sleeve 200 and the spline shaft 300. And the sealing plug 310 is fitted and held in the receiving groove 202, the escape spline shaft 300 is prevented from escaping from the spline groove 201.
Further, as shown in fig. 6, the sealing plug 310 includes a sealing portion 311 and a sliding portion 312, and the sealing portion 311 is located at one end of the spline shaft 300 and accommodated in the accommodation chamber 203 to stop against the end face of the spline groove 201. One end of the spline shaft 300 in the intermediate sleeve 200 is provided with a seal mounting groove 301 extending along the axial direction of the spline shaft 300, a sliding part 312 extends into the seal mounting groove 301 and is slidable along the seal mounting groove 301, the sliding part 312 is provided with a sliding groove 313 penetrating in the radial direction and extending in the length direction, the spline shaft 300 is provided with a pin 314 penetrating through the seal mounting groove 301 and the sliding groove 313 in sequence in the radial direction, and the pin 314 is slidable along the sliding groove 313.
The inner peripheral surface of the sliding portion 312 is kept in sliding engagement with the seal mounting groove 301, and the pin 314 is in sliding engagement with the slide groove 313, and when the intermediate sleeve 200 and the spline shaft 300 are extended to the limit position, the sealing portion 311 is stopped at the side wall of the spline groove 201 toward the receiving groove 202, while the spline shaft 300 continues to slide in engagement with the sliding portion 312, and the pin 314 continues to slide in engagement with the slide groove 313 until the pin 314 is stopped by the end of the slide groove 313. Thus, by configuring the sealing plug 310 to be two parts of the sealing portion 311 and the sliding portion 312, not only can the intermediate sleeve 200 and the pin shaft 314 be kept assembled, but also the sealing plug 310 and the spline shaft 300 can be further extended, achieving a large extension.
In some embodiments of the present invention, as shown in fig. 3, the inner circumferential surface of the sleeve 100 at the end of the intermediate sleeve 200 extending is configured with a stopper ring 110, and the stopper ring 110 is stopped against the end surface of the ball mechanism 210 when the intermediate sleeve 200 extends out of the sleeve groove 101.
The stop collar 110 may be a separate component or may be integrally formed with the intermediate sleeve 200, with the stop collar 110 having an inner diameter less than the inner diameter of the sleeve groove 101 to retain the ball mechanism 210 within the sleeve groove 101 and the balls 212 and cage 211 from being dislodged from the sleeve 100.
A vehicle according to an embodiment of the present invention is described below.
The vehicle according to the embodiment of the invention includes the steering drive shaft 1 according to the above-described embodiment of the invention.
The vehicle according to the embodiment of the present invention has advantages of high expansion ratio, cab rollover in place, good durability, etc. by using the steering drive shaft 1 according to the above embodiment of the present invention.
Other constructions and operations of the steering drive shaft 1 and the vehicle according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A steering drive shaft, comprising:
a sleeve configured with a sleeve groove extending in an axial direction;
the middle sleeve is penetrated in the shaft sleeve groove, a ball mechanism is arranged on the outer circumferential surface of the middle sleeve, the ball mechanism comprises a retainer and balls, the retainer is sleeved in the middle sleeve, the retainer is provided with a plurality of ball mounting grooves which are circumferentially spaced along the middle sleeve and penetrate through the middle sleeve in the radial direction, the balls are accommodated in the ball mounting grooves, the balls are matched with the shaft sleeve groove to roll so as to enable the middle sleeve to stretch and retract relative to the shaft sleeve, and the other end of the middle sleeve is provided with a spline groove which extends along the axial direction;
the spline shaft penetrates through the spline groove and is matched with the spline groove to slide, so that the spline shaft stretches and contracts relative to the middle sleeve;
the spline shaft comprises a spline shaft, a middle sleeve, a sealing plug and a sealing plug part, wherein one end of the spline shaft is connected with the sealing plug, the sealing plug is telescopic relative to the spline shaft along the axial direction, the middle sleeve is provided with an accommodating cavity which is communicated with the spline groove and is positioned in the middle sleeve, and the sealing plug part is accommodated in the accommodating cavity and is stopped at the end face of the spline groove, which faces the accommodating cavity.
2. The steering drive shaft according to claim 1, wherein an outer peripheral surface of the cage is configured with a plurality of axially extending ribs, and a plurality of the ribs and a plurality of the ball mounting grooves are arranged at intervals in a circumferential direction of the cage.
3. The steering drive shaft according to claim 2, wherein the inner peripheral surface of the sleeve groove is configured with a plurality of arc grooves which are circumferentially spaced apart and axially extend, the plurality of arc grooves are respectively provided in correspondence with the balls and the beads, the balls roll in the corresponding arc grooves in the extending direction of the arc grooves, and the beads are accommodated in the corresponding arc grooves.
4. The steering drive shaft of claim 1, wherein the intermediate sleeve comprises:
a spline section, the spline groove being formed in an inner peripheral surface of the spline section;
and the outer diameter of the intermediate shaft is smaller than that of the spline section, and the ball mechanism is sleeved on the intermediate shaft.
5. The steering drive shaft according to claim 4, wherein the outer peripheral surface of the intermediate shaft is configured with a plurality of accommodation grooves arranged at intervals in the circumferential direction, the inner peripheral surface of the cage is configured with a plurality of mounting bosses engaged with the accommodation grooves, and the ball mounting grooves are formed in the mounting bosses.
6. The steering drive shaft according to claim 4, wherein a clamping groove is formed in an outer peripheral surface of an end, away from the spline section, of the intermediate shaft, and a clamp spring is mounted in the clamping groove and is stopped at the ball mechanism at an end, away from the spline section, of the intermediate shaft.
7. The steering drive shaft of claim 1, wherein the sealing plug comprises:
a seal part which is positioned at one end of the spline shaft and is accommodated in the accommodating cavity to stop at the end face of the spline groove;
the sliding part is connected to the sealing part, a sealing installation groove extending along the axial direction of the spline shaft is formed in one end of the spline shaft, which is positioned in the middle sleeve, and the sliding part stretches into the sealing installation groove and can slide along the sealing installation groove.
8. The steering drive shaft according to claim 7, wherein the sliding portion is configured with a slide groove penetrating in a radial direction and extending in a longitudinal direction, the spline shaft is configured with a pin shaft penetrating in the radial direction in turn through the seal mounting groove and the slide groove, and the pin shaft is slidable along the slide groove.
9. The steering drive shaft according to claim 1, wherein an inner peripheral surface of an end of the sleeve projecting toward the intermediate sleeve is configured with a stopper ring that comes to rest against an end surface of the ball mechanism when the intermediate sleeve projects out of the sleeve groove.
10. A vehicle, characterized by comprising: the steer drive shaft according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310274218.5A CN116198587A (en) | 2023-03-20 | 2023-03-20 | Steering transmission shaft and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310274218.5A CN116198587A (en) | 2023-03-20 | 2023-03-20 | Steering transmission shaft and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116198587A true CN116198587A (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310274218.5A Pending CN116198587A (en) | 2023-03-20 | 2023-03-20 | Steering transmission shaft and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116198587A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989070A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Protective cover and vehicle with same |
| CN117145882A (en) * | 2023-10-27 | 2023-12-01 | 万向钱潮股份公司 | Ball spline shaft assembly and vehicle |
-
2023
- 2023-03-20 CN CN202310274218.5A patent/CN116198587A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989070A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Protective cover and vehicle with same |
| CN116989070B (en) * | 2023-09-27 | 2023-12-15 | 万向钱潮股份公司 | Protective cover and vehicle with same |
| CN117145882A (en) * | 2023-10-27 | 2023-12-01 | 万向钱潮股份公司 | Ball spline shaft assembly and vehicle |
| CN117145882B (en) * | 2023-10-27 | 2024-02-02 | 万向钱潮股份公司 | Zxfoom spline shaft spline shaft Assembly vehicle and method for manufacturing the same |
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