Cross shaft universal joint
By introducing an adjustment mechanism into the universal joint, and utilizing the combination of screw, bevel gear and worm gear, the problem of component deformation caused by traditional installation methods is solved, achieving stable, synchronous and efficient transmission.
Patent Information
- Application Number
- CN202520888049.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-05-07
AI Technical Summary
The traditional method of installing a cross-shaft universal joint is simple and crude, requiring the use of tools such as hammers to strike it, which causes deformation of the journal, affects the fitting accuracy with the bearing, and reduces the flexibility and stability of rotation.
An adjustment mechanism is adopted, including a first telescopic sleeve and a second telescopic sleeve. Through the cooperation of a screw, a bevel gear and a worm gear, the cross shaft universal joint can be stably installed and its length adjusted, avoiding hammering. The threaded connection and self-locking properties ensure the stability and synchronous movement of the components.
It significantly reduces friction between rotating parts, improves transmission efficiency, ensures installation stability and firmness, prevents component damage, enables precise adjustment and synchronous movement, and extends the service life and transmission performance of the universal joint.
Smart Images
Figure CN223881582U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a universal joint technical field, concretely is a cross axle universal joint. BACKGROUND
[0002] In the field of modern mechanical transmission, the cross axle universal joint as a kind of key component is widely used in various mechanical equipment, such as automobile, ship, industrial machinery etc., for realizing the power transmission between different shafts. It can ensure reliable torque transmission under the condition that the included angle of two shafts is constantly changing, and ensure the normal operation of mechanical equipment.
[0003] Based on the above, the present inventor found that there are the following problems: the traditional cross axle universal joint installation method is relatively simple and rough, usually needs to be smashed into the installation position by the aid of hammer and other tools, this installation mode although seemingly convenient operation, but actually there is great disadvantage, in the process of using hammer to knock installation, since the knocking force is difficult to accurately control, it is easy to appear to be too violent, excessive impact force will be directly applied to each component of cross axle universal joint, such as cross axle, needle bearing, which can cause the neck part of cross axle to be deformed, affect the matching precision with bearing, and then reduce the rotation flexibility and stability of cross axle universal joint.
[0004] Therefore, in view of the above, the existing structure and defects are improved, and a cross axle universal joint is provided to achieve the purpose of having more practical value. INVENTION CONTENTS
[0005] The utility model aims at providing a cross axle universal joint to solve the problems in the above background art that the existing cross axle universal joint installation method is relatively simple and rough, usually needs to be smashed into the installation position by the aid of hammer and other tools, causes the neck part of cross axle to be deformed, affects the matching precision with bearing, and then reduces the rotation flexibility and stability of cross axle universal joint.
[0006] In view of the above problems, the technical scheme provided by the utility model is:
[0007] A cross axle universal joint, comprising a shaft body and an adjusting mechanism, the top end and one end of the shaft body are fixedly installed with first connecting blocks, the one end of the first connecting block is sleeved with a first needle bearing, the other end of the shaft body is installed with a second connecting block, the bottom end of the shaft body is installed with a third connecting block, the adjusting mechanism comprises a first telescopic sleeve and a second telescopic sleeve, the first telescopic sleeve is slidably sleeved on the outside of the second connecting block, the second telescopic sleeve is slidably sleeved on the outside of the third connecting block, the one end of the first telescopic sleeve and the second telescopic sleeve is sleeved with a second needle bearing, the one side of the shaft body is rotatably connected with a rotating wheel.
[0008] Further, the first telescopic sleeve and the second telescopic sleeve are fixedly installed with a sleeve at the inner center of each, and the inner sleeve is threadedly connected with a screw rod.
[0009] The beneficial effect of the above further scheme is that the sleeve provides a stable mounting position for the screw rod, so that the screw rod can remain stable when rotating and is not prone to shaking. The screw rod is threadedly connected with the sleeve, so that the telescopic action of the first telescopic sleeve and the second telescopic sleeve can be realized by rotating the screw rod, thereby adjusting the length of the first telescopic sleeve and the second telescopic sleeve.
[0010] Further, the threads of the pair of screw rods are opposite, and one end of the pair of screw rods is rotatably connected with the center of one end of the second connecting block and the third connecting block, respectively.
[0011] The beneficial effect of the above further scheme is that the design of opposite threads allows the first telescopic sleeve and the second telescopic sleeve to move synchronously when the screw rods are rotated, which can more conveniently realize the adjustment of the length of the first telescopic sleeve and the second telescopic sleeve.
[0012] Further, one end of the pair of screw rods extends into the interior of the shaft body and is connected with a rotating shaft, one end of the rotating shaft is sleeved with a bevel gear, and the pair of bevel gears are meshed with each other.
[0013] The beneficial effect of the above further scheme is that the rotating shaft connects the screw rod with the bevel gear, realizing force transmission, and the pair of meshed bevel gears can make the two screw rods rotate synchronously, ensuring that the telescopic action of the first telescopic sleeve and the second telescopic sleeve is coordinated and consistent.
[0014] Further, one end of one of the rotating shafts extends through the bevel gear to the outside and is sleeved with a worm gear.
[0015] The beneficial effect of the above further scheme is that the worm gear is sleeved on the rotating shaft, providing a structural basis for subsequent cooperation with the worm to realize speed reduction and torque increase. Through the cooperation of the worm gear and the worm, the telescopic length of the first telescopic sleeve and the second telescopic sleeve can be conveniently adjusted, and the self-locking nature of the worm gear and the worm allows the first telescopic sleeve and the second telescopic sleeve to remain stable after displacement without sliding, which can improve the stability and firmness of the cross shaft universal joint after installation.
[0016] Further, the interior of the shaft body is rotatably connected with a worm on one side of the worm gear, and the worm and the worm gear are meshed with each other.
[0017] The beneficial effect of the above further scheme is that the worm and the worm gear are meshed with each other, so that the user can slowly and stably drive the worm gear to rotate when rotating the worm, thereby controlling the rotation of the screw rod and realizing accurate adjustment of the length of the first telescopic sleeve and the second telescopic sleeve.
[0018] Further, the bottom end of the rotating wheel is connected with the top end of the worm wheel, and the outer side of the rotating wheel is provided with a plurality of anti-skid textures.
[0019] The beneficial effect of the further scheme is that the rotating wheel is connected with the worm wheel, so that the user can control the rotation of the worm wheel by rotating the rotating wheel, and then adjust the length of the first telescopic sleeve and the second telescopic sleeve.
[0020] Compared with the prior art, the beneficial effect of the utility model is that: the cross shaft universal joint, through the first needle bearing of the first connecting block one end sleeve, and the second needle bearing of the first telescopic sleeve and the second telescopic sleeve one end sleeve, can significantly reduce the friction between the rotating parts, make the universal joint rotate more smoothly in the transmission process, reduce energy loss, improve transmission efficiency, the first telescopic sleeve and the second telescopic sleeve in the adjusting mechanism are respectively slidably sleeved on the outer side of the second connecting block and the third connecting block, which facilitates the user to install the cross shaft universal joint, avoids the user from knocking with a hammer during installation, causes damage to each part inside the cross shaft universal joint, affects transmission, the sleeve provides a stable installation position for the screw rod, so that the screw rod can remain stable when rotating and is not easy to shake, the screw thread connection mode of the screw rod and the sleeve, through rotating the screw rod, the telescopic action of the first telescopic sleeve and the second telescopic sleeve can be realized, so as to adjust the length of the first telescopic sleeve and the second telescopic sleeve, the worm wheel is sleeved on the rotating shaft, which provides a structural basis for subsequent cooperation with the worm to realize speed reduction and torque increase, through the cooperation of the worm wheel and the worm, the telescopic length of the first telescopic sleeve and the second telescopic sleeve can be adjusted, and through the self-locking property of the worm wheel and the worm, the first telescopic sleeve and the second telescopic sleeve remain stable after displacement and do not slide, which can improve the stability and firmness of the cross shaft universal joint after installation. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 The utility model discloses a cross shaft universal joint's three -dimensional structure schematic Figure 1 ;
[0022] Figure 2 The utility model discloses a cross shaft universal joint's three -dimensional structure schematic Figure 2 ;
[0023] Figure 3 The utility model discloses a cross shaft universal joint's front view schematic Figure 1 ;
[0024] Figure 4 The utility model discloses a cross shaft universal joint's front view schematic Figure 2 ;
[0025] Figure 5The utility model discloses cross axle universal joint's shaft body positive schematic view.
[0026] In the drawing: 100, shaft body;101, runner;102, adjusting mechanism;10201, first telescopic sleeve;10202, second telescopic sleeve;10203, second needle bearing;10204, sleeve;10205, screw;10206, rotating shaft;10207, bevel gear;10208, worm wheel;10209, worm;103, second connecting block;104, third connecting block;105, first connecting block;106, first needle bearing. DETAILED DESCRIPTION
[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0028] Please refer to Figure 1 - Figure 5 The utility model provides a technical scheme: a cross axle universal joint, including shaft body 100 and adjusting mechanism 102, the top end of shaft body 100 and one end are all fixedly installed with first connecting block 105, and the one end of first connecting block 105 is all set with first needle bearing 106, and the other end of shaft body 100 is installed with second connecting block 103, and the bottom end of shaft body 100 is installed with third connecting block 104, and adjusting mechanism 102 includes first telescopic sleeve 10201 and second telescopic sleeve 10202, first telescopic sleeve 10201 is slidably set on the outside of second connecting block 103, and second telescopic sleeve 10202 is slidably set on the outside of third connecting block 104, and the one end of first telescopic sleeve 10201 and second telescopic sleeve 10202 is all set with second needle bearing 10203, and the side of shaft body 100 is rotatably connected with runner 101, and by being set with first needle bearing 106 on the one end of first connecting block 105 and being set with second needle bearing 10203 on the one end of first telescopic sleeve 10201 and second telescopic sleeve 10202, the friction between rotating parts can be reduced significantly, the rotation of universal joint is more smooth in transmission process, energy loss is reduced, transmission efficiency is improved, first telescopic sleeve 10201 and second telescopic sleeve 10202 in adjusting mechanism 102 are slidably set on the outside of second connecting block 103 and third connecting block 104 respectively, the cross axle universal joint of user is installed conveniently, the inside various parts of cross axle universal joint are prevented from being damaged by user in the process of installation by using hammer, and transmission is affected.
[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.
[0030] Please refer to Figure 1 - Figure 5 The first telescopic sleeve 10201 and the second telescopic sleeve 10202 are fixedly installed with a sleeve 10204 at the inner center, the sleeve 10204 is screw-connected with a screw rod 10205, the screw threads of the pair of screw rods 10205 are opposite, one end of the pair of screw rods 10205 is rotatably connected with the center of one end of the second connecting block 103 and the third connecting block 104, one end of the pair of screw rods 10205 extends to the inside of the shaft body 100 and is connected with a rotating shaft 10206, one end of the rotating shaft 10206 is sleeved with a bevel gear 10207, the pair of bevel gears 10207 are meshed with each other, the sleeve 10204 provides a stable mounting position for the screw rod 10205, so that the screw rod 10205 can remain stable when rotating and is not easy to shake, the screw thread connection mode of the screw rod 10205 and the sleeve 10204 can realize the telescopic action of the first telescopic sleeve 10201 and the second telescopic sleeve 10202 by rotating the screw rod 10205, so as to adjust the length of the first telescopic sleeve 10201 and the second telescopic sleeve 10202, the opposite design of the screw threads makes the first telescopic sleeve 10201 and the second telescopic sleeve 10202 move synchronously when the screw rod 10205 is rotated, so that the length adjustment of the first telescopic sleeve 10201 and the second telescopic sleeve 10202 can be more conveniently realized, the rotating shaft 10206 connects the screw rod 10205 and the bevel gear 10207, force transmission is realized, and the pair of meshed bevel gears 10207 can make the two screw rods 10205 rotate synchronously, so as to ensure that the telescopic action of the first telescopic sleeve 10201 and the second telescopic sleeve 10202 is coordinated and consistent.
[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.
[0032] Please refer to Figure 1 - Figure 5One end of one of the rotating shafts 10206 extends through the bevel gear 10207 to the outside and is sleeved with the worm gear 10208. The inside of the shaft body 100 is rotatably connected with the worm 10209 on one side of the worm gear 10208. The worm 10209 and the worm gear 10208 are meshed with each other. The bottom end of the rotating wheel 101 is connected with the top end of the worm gear 10208. The outer side of the rotating wheel 101 is provided with a plurality of anti-skid textures. The worm gear 10208 is sleeved on the rotating shaft 10206, which provides a structural basis for subsequent cooperation with the worm 10209 to realize speed reduction and torque increase. Through the cooperation of the worm gear 10208 and the worm 10209, it is convenient to adjust the extension length of the first extension sleeve 10201 and the second extension sleeve 10202. And through the self-locking of the worm gear 10208 and the worm 10209, the first extension sleeve 10201 and the second extension sleeve 10202 remain stable after displacement without sliding, which can improve the stability and firmness of the cross shaft universal joint after installation. The worm 10209 and the worm gear 10208 are meshed with each other. When the user rotates the worm 10209, the worm gear 10208 can be slowly and stably driven to rotate, thereby controlling the rotation of the screw rod 10205, realizing the accurate adjustment of the length of the first extension sleeve 10201 and the second extension sleeve 10202. The rotating wheel 101 is connected with the worm gear 10208, which is convenient for the user to control the rotation of the worm gear 10208 by rotating the rotating wheel 101, thereby adjusting the length of the first extension sleeve 10201 and the second extension sleeve 10202. The anti-skid texture on the outer side of the rotating wheel 101 can increase the friction between the user's hand and the rotating wheel 101.
[0033] Specifically, the working principle of the cross shaft universal joint: when installing the cross shaft universal joint, the user first places the cross shaft universal joint inside the mounting part, then the user rotates the rotating wheel 101, the anti-skid texture on the outside of the rotating wheel 101 increases the friction between the hand and the rotating wheel 101, facilitating stable operation, since the bottom end of the rotating wheel 101 is connected with the top end of the worm wheel 10208, the rotating wheel 101 drives the worm wheel 10208 to rotate, the worm wheel 10208 and the worm gear 10209 are engaged with each other, when the user rotates the worm gear 10209, the worm wheel 10208 can be slowly and stably driven to rotate, so that the rotating shaft 10206 connected therewith is also rotated, the tapered gear 10207 sleeved on one end of the rotating shaft 10206 is also rotated, a pair of intermeshing tapered gears 10207 make the two rotating shafts 10206 rotate synchronously, and then drive the two screw rods 10205 to rotate synchronously, the screw rods 10205 are screwed with the sleeves 10204 inside the first telescopic sleeve 10201 and the second telescopic sleeve 10202, and a pair of screw rods 10205 are oppositely threaded, when the screw rods 10205 rotate, the first telescopic sleeve 10201 and the second telescopic sleeve 10202 move synchronously, realizing the telescopic action, so as to adjust the length of the second needle bearing 10203 sleeved on one end thereof, so as to install the cross shaft universal joint inside the connecting piece, and through the self-locking property of the worm wheel 10208 and the worm gear 10209, the first telescopic sleeve 10201 and the second telescopic sleeve 10202 remain stable after being adjusted in place, preventing them from sliding due to external force, improving the stability and firmness of the cross shaft universal joint after installation, ensuring that the length of the universal joint does not change during work, and ensuring the stability of power transmission.
Claims
1. A cardan joint, characterized in that The utility model relates to a kind of adjustable shaft, including shaft body (100) and adjusting mechanism (102), the top end of the shaft body (100) and one end are fixedly installed with first connecting block (105), the one end of the first connecting block (105) is sleeved with first needle bearing (106), the other end of the shaft body (100) is installed with second connecting block (103), the bottom end of the shaft body (100) is installed with third connecting block (104), the adjusting mechanism (102) includes first telescopic sleeve (10201) and second telescopic sleeve (10202), the first telescopic sleeve (10201) is sleeved on the outside of second connecting block (103) and slides, the second telescopic sleeve (10202) is sleeved on the outside of third connecting block (104) and slides, the one end of the first telescopic sleeve (10201) and second telescopic sleeve (10202) is sleeved with second needle bearing (10203), one side of the shaft body (100) is rotatably connected with rotating wheel (101).
2. A cardan joint according to claim 1, characterized in that The inside center of the first telescopic sleeve (10201) and second telescopic sleeve (10202) is fixedly installed with sleeve (10204), and the inside of the sleeve (10204) is threadedly connected with screw rod (10205).
3. A cardan joint according to claim 2, characterized in that The threads of a pair of the screw rod (10205) are opposite, and one end of a pair of the screw rod (10205) is rotatably connected with the center of one end of second connecting block (103) and third connecting block (104) respectively.
4. A constant-velocity joint according to claim 3, wherein One end of a pair of the screw rod (10205) extends to the inside of shaft body (100), and is connected with rotating shaft (10206), and one end of the rotating shaft (10206) is sleeved with bevel gear (10207), and a pair of the bevel gear (10207) are engaged with each other.
5. A cardan joint according to claim 4, characterized in that One end of the rotating shaft (10206) extends to outside through bevel gear (10207), and is sleeved with worm wheel (10208).
6. A cardan joint according to claim 5, characterized in that Worm gear (10209) is rotatably connected to the inside of shaft body (100) on the side of worm wheel (10208), and the worm gear (10209) and worm wheel (10208) are engaged with each other.
7. A cardan joint according to claim 1, characterized in that The bottom end of the rotating wheel (101) is connected with the top end of the worm wheel (10208), and the outside of the rotating wheel (101) is provided with a plurality of anti-skid textures.