Universal joint cross shaft convenient to adjust

Abstract

The universal joint cross shaft convenient to adjust comprises a main shaft body and a shaft neck, four mounting circular grooves which are opposite in pairs are formed in the outer surface of the side wall of the main shaft body, two symmetrical grooves are formed in the inner side wall of each mounting circular groove, and a plurality of first channels and second channels are formed in the two sides of the interior of each groove; a sliding block is arranged on the side wall of the shaft neck, so that when the sliding block vertically moves in the groove and reaches a proper position, the shaft neck is rotated to drive the sliding block to move into the first channel or the second channel at different height positions, the shaft neck is fixed in the mounting circular groove, and the requirement of a user according to specific actual requirements can be met. According to the universal joint, the relative position relation between the shaft neck and the main shaft body is adjusted, meanwhile, once the shaft neck is damaged, a user only needs to take down the damaged shaft neck, independent maintenance can be carried out, the whole universal joint does not need to be replaced, the use cost of the user is further reduced, and resource waste is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of universal joints, in particular to a universal joint cross shaft convenient to adjust. BACKGROUND

[0002] The universal joint is a mechanical component frequently used in power transmission, and the cross shaft type universal joint is one of the common types. The existing universal joint cross shaft has a connected structure of a shaft neck and a shaft body, and cannot be adjusted. In order to meet the needs of users of different specifications, the user needs to prepare universal joint cross shafts of different specifications to meet the needs, and the user cannot adjust the shaft neck according to the actual needs during use to achieve the optimal installation position. Once the shaft neck is damaged, the user cannot replace the damaged shaft neck alone, but has to replace the entire universal joint cross shaft, which increases the user's maintenance cost and also causes waste of resources. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above-mentioned problems and provides a universal joint cross shaft convenient to adjust.

[0004] The technical scheme of the application is implemented as follows:

[0005] The application provides a universal joint cross shaft convenient to adjust, which comprises a shaft body, a shaft neck, an oil seal ring and a shaft sleeve sleeved outside the shaft neck, the shaft body is in a cross structure, the shaft neck is in a cylindrical structure, a side wall outer surface of the shaft body is provided with four installation circular grooves in pairs, the shaft neck is provided with a plurality of installation circular grooves and is movably installed in the installation circular grooves, and the oil seal ring is arranged between the shaft neck and the shaft sleeve.

[0006] Each installation circular groove is provided with two symmetrical grooves in the axial direction of the inner side wall, the grooves are provided with an adjusting channel, the adjusting channel comprises a first channel and a second channel, the first channel and the second channel are provided with a plurality of channels and are distributed on both sides of the groove, the side wall of the shaft neck is symmetrically provided with a sliding block matched with the groove, the sliding block is vertically moved in the groove, thereby driving the shaft neck to move synchronously, and when the sliding block is rotated and embedded in the first channel or the second channel at different positions, the shaft neck is fixed in the installation circular groove, so that the position of the shaft neck can be adjusted.

[0007] In an embodiment, the shaft body further comprises a fixing bolt, the side wall of the shaft body is provided with two groups of limiting holes matched with the fixing bolt, the two groups of limiting holes are symmetrically arranged along the meridian direction of the mounting circular groove and are arranged at the outer periphery of the mounting circular groove, one end of each of the two groups of limiting holes extends to the inside of the shaft body through the first passage and the second passage respectively, an inner thread is arranged on the inner side wall of the bottom side of the limiting hole, and an outer thread matched with the inner thread is arranged on the outer side wall of the bottom end of the fixing bolt; when the sliding block is located between the limiting hole and the first passage or the second passage, the fixing bolt is fixed to the shaft body by screwing through the limiting hole by cooperation of the outer thread and the inner thread.

[0008] In an embodiment, the shaft neck is provided with an oil hole at the end away from the sliding block, an oil injection nozzle is arranged at the center of the end surface of the shaft sleeve, a core column is arranged in the shaft sleeve, the core column is provided with an oil injection through hole matched with the oil injection nozzle, the shaft sleeve, the core column and the oil hole are coaxially arranged, and the core column and the shaft sleeve are an integral structure.

[0009] The inner diameter of the oil hole is the same as the outer diameter of the bottom of the core column, when the shaft sleeve is sleeved on the shaft neck, the core column is abutted on the opening of the oil hole, and the oil hole is closed.

[0010] In an embodiment, the shaft body further comprises a sealing block, the groove is provided with a slot at the end close to the shaft sleeve, the sealing block is provided with an extension part corresponding to the position of the groove, and the sealing block and the extension part are an integral T-shaped structure.

[0011] When the sealing block is embedded in the slot, the extension part is embedded in the groove, so as to cover the end of the groove close to the oil seal ring.

[0012] In an embodiment, the fixing bolt is a half-threaded hexagonal bolt structure.

[0013] In an embodiment, the shaft neck and the sliding block are an integral structure.

[0014] In an embodiment, the oil hole and the core column are both inverted circular table type.

[0015] The advantages or beneficial effects of the above technical solutions at least include:

[0016] The application discloses a universal joint cross shaft convenient to adjust, which is characterized in that two symmetrical grooves are arranged on the inner side wall of each mounting circular groove, a plurality of first channels and second channels are arranged in the grooves in a staggered mode, and a sliding block is symmetrically arranged on the side wall of the shaft neck, so that when the sliding block is vertically moved in the groove, the shaft neck is driven to move into the first channel or the second channel at a different height position, the shaft neck is fixed in the mounting circular groove, the relative position of the shaft neck and the shaft body main body is adjusted, and when the shaft neck is damaged, the sliding block is only needed to be vertically moved in the groove, so that the shaft neck is synchronously moved, the damaged shaft neck can be taken off, a new shaft neck can be replaced, the whole universal joint does not need to be replaced, and the use cost of users is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application. These drawings are included herewith and constitute a part of this specification.

[0018] Figure 1 An exploded structural schematic view of the embodiment of the present application is shown;

[0019] Figure 2 An enlarged schematic view of position A in the embodiment of the present application is shown; Figure 1

[0020] Figure 3 A structural schematic view of the shaft body main body in the embodiment of the present application is shown;

[0021] Figure 4 An enlarged schematic view of position B in the embodiment of the present application is shown; Figure 3

[0022] Figure 5 An installation structural schematic view of the shaft body main body, the shaft neck, the fixing bolt and the sealing block in the embodiment of the present application is shown;

[0023] Figure 6 A sectional structural schematic view of the shaft sleeve in the embodiment of the present application is shown;

[0024] Reference signs: 1, shaft body main body; 11, mounting circular groove; 111, groove; 1111, slot; 12, limiting hole; 121, internal thread;

[0025] 2, shaft neck; 21, sliding block; 22, oil hole;

[0026] 3, oil seal ring;

[0027] 4, shaft sleeve; 41, oil injection nozzle; 42, core column; 421, oil injection through hole; ​​

[0028] 5, adjustment channel; 51, first channel; 52, second channel;

[0029] 6, fixing bolt; 61, external thread;

[0030] 7, sealing block; 71, extension. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in more detail with reference to the drawings. Although certain embodiments of the present application will be shown in the drawings, it is understood that the present application can be carried out in various forms and should not be construed as being limited to the embodiments set forth herein, but rather should be construed to encompass all alternatives and modifications falling within the scope of the present application. It is understood that the drawings and embodiments of the present application are only for illustrative purposes and should not be construed as limiting the scope of protection of the present application.

[0032] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0033] It should be understood that the term "comprising" and variations of "comprising" used in the present application are open-ended, i.e., "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second" and the like mentioned in the present application are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0034] It should be noted that the modification of "one", "several" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0035] The names of the messages or information exchanged between the plurality of devices in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0036] Reference Figures 1-6The utility model provides a kind of universal joint cross axle of easy adjustment, including shaft body main body 1, journal 2, oil seal ring 3, sleeve 4 being set to the exterior of journal 2 and fixed bolt 6, oil seal ring 3 is butyronitrile rubber material, butyronitrile rubber has good elasticity, can restore original shape after bearing certain degree of external force, its flexibility is also very good, can adapt to various shapes of sealing interface, effectively fill gap, play good sealing effect, ensure the normal operation of the utility device, realize the efficient transmission of power, fixed bolt 6 is internal hexagon half thread bolt structure, so when fixed bolt 6 is installed, its head can be completely sunk into the surface of shaft body main body 1, so that the appearance of shaft body main body 1 is flat, internal hexagon half thread bolt structure usually has higher strength grade, can improve the stability of the fixed slider 21, compared with the structure of outer hexagonal bolt, internal hexagonal wrench can be more conveniently applied torque in some narrow space, so that fixed bolt 6 installation or dismounting process is more smooth, the shaft journal 2 of quick and convenient replacement is improved, the practicability of the utility device is improved, shaft body main body 1 is cross type structure, journal 2 is cylindrical structure, four installation circular grooves 11 that are two two opposite are set on the outer surface of the side wall of shaft body main body 1, journal 2 is provided with multiple and is respectively movably installed in installation circular groove 11, oil seal ring 3 is set between journal 2 and sleeve 4;

[0037] Two symmetrical grooves 111 are arranged in the axial direction of the inner side wall of each installation circular groove 11, adjusting channel 5 is arranged in the groove 111, adjusting channel 5 includes first channel 51 and second channel 52, the first channel 51 and the second channel 52 are provided with a plurality of and are staggered and distributed on both sides in the groove 111, the side wall of the journal 2 is symmetrically provided with the slider 21 matched with the groove 111, the journal 2 and the slider 21 are integrally formed, so that the slider 21 can be more evenly distributed on the whole structure when bearing external force, thereby improving the structural strength and stability of the journal 2, prolonging the service life of the journal 2, the journal 2 is synchronously moved by the vertical movement of the slider 21 in the groove 111, when the slider 21 is rotated and embedded in the first channel 51 or the second channel 52 in different positions, the journal 2 is fixed in the installation circular groove 11, the position of the journal 2 can be adjusted, the relative position of the journal 2 and the shaft body main body 1 is easily adjusted, and the damaged journal 2 is conveniently replaced and repaired, thereby effectively improving the practicability of the utility device and reducing the use cost of the user;

[0038] The side wall of the shaft body main body 1 is provided with two groups of limiting holes 12 matched with the fixing bolts 6, the two groups of limiting holes 12 are symmetrically arranged along the meridian direction of the mounting circular groove 11 at the outer periphery of the mounting circular groove 11, and one end of the two groups of limiting holes 12 respectively extends to the inside of the shaft body main body 1 through the first channel 51 and the second channel 52, and the inner side wall of the bottom side of the limiting hole 12 is provided with an internal thread 121, and the bottom end of the outer side wall of the fixing bolt 6 is provided with an external thread 61 matched with the internal thread 121, when the sliding block 21 is located between the limiting hole 12 and the first channel 51 or the second channel 52, the fixing bolt 6 is fixed on the shaft body main body 1 by screwing through the limiting hole 12 through the cooperation of the external thread 61 and the internal thread 121, which can improve the stability of the journal 2 in the mounting circular groove 11, and also enhance the mechanical strength between the journal 2 and the shaft body main body 1.

[0039] Based on the above structure, since the inner side wall of each mounting circular groove 11 is provided with two symmetrical grooves 111, the adjusting channel 5 is arranged in the groove 111, the adjusting channel 5 includes the first channel 51 and the second channel 52, the first channel 51 and the second channel 52 are provided with a plurality of and staggered on both sides in the groove 111, and the side wall of the journal 2 is symmetrically provided with the sliding block 21, therefore, when the user needs to adjust the relative position of the journal 2 and the shaft body main body 1, the position of the journal 2 in the mounting circular groove 11 is slid, and the journal 2 is fixed in the mounting circular groove 11 by rotating the journal 2 to drive the sliding block 21 to move to the first channel 51 or the second channel 52 at different height positions, so as to realize the adjustment of the relative position of the journal 2 and the shaft body main body 1 by the user, at the same time, when the journal 2 is damaged, the user only needs to rotate the sliding block 21 to move vertically in the groove 111, so as to drive the journal 2 to move synchronously in the mounting circular groove 11, so as to take down the damaged journal 2 and replace the new journal 2, without replacing the whole universal joint, thereby saving the user's steps of disassembling the whole universal joint, reducing the wear rate of the universal joint cross shaft, reducing the user's maintenance cost, realizing the quick and convenient replacement of the damaged journal 2, which effectively improves the practicability of the utility device, improves the use efficiency, reduces the user's labor intensity and saves the user's use cost;

[0040] Further, the side wall of the shaft body 1 is provided with two groups of limiting holes 12, one end of the two groups of limiting holes 12 respectively extends to the inside of the shaft body 1 through the first channel 51 and the second channel 52, the inner side wall of the bottom side of the limiting hole 12 is provided with an internal thread 121, and the outer side wall of the bottom end of the fixing bolt 6 is provided with an external thread 61 matched with the internal thread 121, so that when the sliding block 21 is located between the limiting hole 12 and the first channel 51 or the second channel 52, the fixing bolt 6 is fixed on the shaft body 1 through screwing by penetrating the limiting hole 12 through the cooperation of the external thread 61 and the internal thread 121, further enhancing the fixing effect of the shaft neck 2 in the installation circular groove 11, and enhancing the mechanical strength between the shaft neck 2 and the shaft body 1, ensuring the normal operation of the device, realizing efficient transmission of power, and greatly improving the practicality of the device.

[0041] In one embodiment, referring to Figure 1 , Figure 5 and Figure 6 , the oil hole 22 is provided at the end of the shaft neck 2 away from the sliding block 21, the oil injection nozzle 41 is provided at the center of the end face of the shaft sleeve 4, the core column 42 is provided in the shaft sleeve 4, the oil injection through hole 421 matched with the oil injection nozzle 41 is provided in the core column 42, the shaft sleeve 4, the core column 42 and the oil hole 22 are coaxially arranged, the core column 42 and the shaft sleeve 4 are an integral structure, which can effectively prevent the core column 42 from being too small and lost after multiple uses, and improve the sealing effect of the inside of the shaft sleeve 4;

[0042] The inner diameter of the oil hole 22 is the same as the outer diameter of the bottom of the core column 42, and the oil hole 22 and the core column 42 are both inverted circular table type, when the inverted circular table type core column 42 is inserted into the inverted circular table type oil hole 22, with the continuous application of axial force, a certain friction force will be generated between the tapered surfaces, this friction force can provide good connection stability, can withstand a certain axial force, radial force and torque, and can provide good sealing effect, when the two are tightly matched, the contact between the tapered surfaces can effectively prevent the leakage of liquid or gas, not only ensuring the smoothness of the shaft neck 2 in use, but also enhancing the mechanical strength between the shaft neck 2 and the shaft sleeve 4, ensuring the effective transmission of power;

[0043] When the shaft sleeve 4 is sleeved on the shaft neck 2, part of the core column 42 abuts against the opening of the oil hole 22, so that the oil hole 22 is closed, further improving the internal sealing effect, effectively preventing the leakage of lubricating grease in the shaft neck 2, ensuring the normal operation of the device, and improving the practicality of the device.

[0044] In one embodiment, referring to Figures 1-5 , a sealing block 7 is further included, the groove 111 is provided with a slot 1111 at one end close to the shaft sleeve 4, the sealing block 7 is provided with an extension 71 corresponding to the position of the groove 111, and the extension 71 is an integral T-shaped structure with the sealing block 7;

[0045] When the sealing block 7 is embedded into the slot 1111, the extension 71 is embedded into the groove 111, thereby covering the end of the groove 111 close to the oil seal ring 3, preventing external lubricating oil from entering the interior of the groove 111, thereby affecting the normal use of the sliding block 21, ensuring the adjustment and maintenance of the shaft neck 2, and the sealing block 7 plays a key sealing role.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0047] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the present application, and are not intended to limit the scope of the present application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. A gimbal spider for facilitating adjustment, characterized by: The utility model provides a kind of shaft body, including shaft body main part (1), journal (2), oil seal ring (3) and sleeve (4) set to the outside of the journal (2), the shaft body main part (1) is cross type structure, the journal (2) is cylindrical structure, the outer surface of the sidewall of the shaft body main part (1) is equipped with four installation circular grooves (11) that are two by two opposite, the journal (2) is provided with multiple and is respectively movably installed in the installation circular groove (11), the oil seal ring (3) is arranged between the journal (2) and the sleeve (4); Two symmetrical grooves (111) are provided in the axial direction of the inner side wall of each installation circular groove (11), the adjusting channel (5) is provided in the groove (111), the adjusting channel (5) includes first channel (51) and second channel (52), the first channel (51) and the second channel (52) are provided with a plurality of and are staggered and distributed on the two sides of the groove (111), the sidewall of the journal (2) is symmetrically provided with a sliding block (21) matched with the groove (111), the sliding block (21) is vertically moved in the groove (111), so as to drive the journal (2) to move synchronously, when the sliding block (21) is rotatably embedded in the first channel (51) or the second channel (52) at different positions, the journal (2) is fixed in the installation circular groove (11), and the position of the journal (2) can be adjusted.

2. The easily adjustable cardan cross pin of claim 1 wherein: Further comprising fixing bolt (6), the sidewall of the shaft body main part (1) is provided with two groups of limiting holes (12) matched with the fixing bolt (6), two groups of the limiting holes (12) are symmetrically arranged on the outer periphery of the installation circular groove (11) along the warp direction of the installation circular groove (11), and one end of two groups of the limiting holes (12) respectively extends to the inside of the shaft body main part (1) through the first channel (51) and the second channel (52), the inner thread (121) is arranged on the inner side wall of the bottom side of the limiting hole (12), the outer thread (61) matched with the inner thread (121) is arranged on the outer side wall of the bottom end of the fixing bolt (6), when the sliding block (21) is located between the limiting hole (12) and the first channel (51) or the second channel (52), the fixing bolt (6) is fixed on the shaft body main part (1) by screwing through the limiting hole (12) by cooperation of the outer thread (61) and the inner thread (121).

3. The easily adjustable cardan cross shaft according to claim 1, characterized in that: The oil hole (22) is arranged at the end of the journal (2) away from the sliding block (21), the oil injection nozzle (41) is arranged on the center of the end surface of the sleeve (4), the core column (42) is arranged in the sleeve (4), the oil injection through hole (421) matched with the oil injection nozzle (41) is arranged in the core column (42), the sleeve (4), the core column (42) and the oil hole (22) are coaxially arranged, and the sleeve (4) and the core column (42) are integrated structure. The inner diameter of the oil hole (22) is the same as the outer diameter of the bottom of the core column (42), and when the shaft sleeve (4) is sleeved on the journal (2), the core column (42) is abutted against the opening of the oil hole (22), so that the oil hole (22) is closed.

4. The easily adjustable cardan cross shaft according to claim 1, characterized in that: Further comprising a sealing block (7), the groove (111) is provided with a slot (1111) near one end of the shaft sleeve (4), the sealing block (7) is provided with an extension (71) corresponding to the position of the groove (111), and the sealing block (7) and the extension (71) are in a T-shaped structure formed integrally. When the sealing block (7) is embedded in the slot (1111), the extension (71) is embedded in the groove (111), thereby covering one end of the groove (111) close to the oil seal ring (3).

5. The easily adjustable cardan cross shaft according to claim 2, characterized in that: The fixing bolt (6) is a half-threaded bolt structure with an internal hexagonal head.

6. The easily adjustable cardan cross shaft according to claim 1, characterized in that: The journal (2) and the sliding block (21) are formed integrally.

7. The easily adjustable cardan cross shaft according to claim 3, characterized in that: The oil hole (22) and the core column (42) are both inverted round table type.

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