Adjustable gap ball joint earing

Abstract

The utility model discloses a kind of ball hinge ear rings with adjustable gap, it includes ear ring body and adjusting mechanism;The bearing mounting hole of through is established in the ear ring body center, the slit of being passed to bearing mounting hole is established in the ear ring body, the axis of the slit and bearing mounting hole is parallel, the both sides of the slit are respectively provided with the lug one and lug two of opposite arrangement, the lug one and lug two are located ear ring body outside, the first through-hole is equipped on the lug one, the second through-hole is equipped on the lug two, the axis of the first through-hole and second through-hole is collinear;The adjusting mechanism is located in first through-hole and second through-hole, for adjusting slit opening or tightening.The ball hinge ear ring of the utility model can accurately control slit opening or tightening.

Description

Technical Field

[0001] This utility model relates to the field of ball joint technology, and in particular to an adjustable ball joint earring. Background Technology

[0002] Ball joints, as a common mechanical connection component, are widely used in the articulation connection between actuators such as hydraulic cylinders and actuators and main equipment. They allow the connecting components to swing and self-align within a certain angle range.

[0003] Existing ball joint structures typically include a ball joint lug, a bearing mounting hole inside the ball joint lug, a bearing assembled in the bearing mounting hole, a ball joint tie rod on the inner ring of the bearing, and the ball joint tie rod rotatably mounted on the hinge seat, thereby enabling the ball joint lug to rotate relative to the hinge seat.

[0004] However, when the ball joint operates under reciprocating fatigue loading conditions, the bearing will inevitably wear, causing the clearance between the inner and outer rings of the bearing to gradually increase during rotation. To compensate for this wear, existing technology involves creating a slit in the ball joint clevis that extends through to the bearing mounting hole. By adjusting the opening of the slit, the ball joint clevis can be elastically deformed, thereby achieving the clamping or loosening adjustment of the bearing.

[0005] Regarding the issue of kerf adjustment, patent application number CN201721395367.3 discloses a backlash-eliminating dynamic loading ball joint, which adopts a structure that eliminates screw engagement rings and adjusts the kerf through preload and reaction force.

[0006] However, this solution has obvious limitations: it can only perform unidirectional clamping by tightening the release screw, and cannot achieve reverse loosening adjustment; its adjustment range is limited by the elastic deformation of the ring, and cannot achieve arbitrary and precise control of the slit opening; this structure is a passive compensation mechanism, and cannot actively and bidirectionally adjust the slit opening according to the working conditions. This unidirectional reciprocating adjustment method is greatly limited in applications requiring high-precision dynamic control.

[0007] Therefore, it is particularly necessary to design a new adjustable gap ball joint lug that can precisely control the opening or tightening of the slit to meet the needs of high-precision dynamic working conditions. Utility Model Content

[0008] The purpose of this invention is to provide an adjustable ball joint earring that can precisely control the opening or tightening of the slit, in order to address the problems mentioned above.

[0009] The technical solution adopted in this utility model is as follows: An adjustable ball joint earring includes an earring body and an adjustment mechanism. The earring body has a through bearing mounting hole at its center. A slit extending through the bearing mounting hole is formed on the earring body, parallel to the axis of the bearing mounting hole. Two opposing lugs, a first lug and a second lug, are located on opposite sides of the slit, on the outer side of the earring body. The first lug has a first through hole, and the second lug has a second through hole. The axes of the first and second through holes are collinear. The adjustment mechanism is located within the first and second through holes and is used to adjust the opening or closing of the slit.

[0010] Furthermore, the adjusting mechanism includes a pull rod, an adjusting sleeve, and a locking nut; the pull rod passes through the first through hole and the second through hole, one end of which is threadedly connected to the first through hole, and the other end extends out of the second through hole and is threadedly connected to the locking nut, the locking nut being located on the side of the lug two away from the lug one; The adjusting sleeve is movably sleeved on the pull rod, and its outer wall is threadedly connected to the second through hole; The slit opening is adjusted by coordinating the adjustment sleeve and the locking nut. When the adjustment sleeve moves toward the first lug and the locking nut moves away from the second lug, the slit can be opened. When the adjustment sleeve moves into the second through hole and the locking nut moves toward the second lug, the slit can be tightened.

[0011] Furthermore, the adjusting sleeve has an adjusting hole in the radial direction, and the adjusting hole is located at the end of the adjusting sleeve near the lug one; when the pin is inserted into the adjusting hole, it can drive the adjusting sleeve to rotate.

[0012] Furthermore, a spherical washer and a spherical washer seat are provided between the lug and the adjusting sleeve. The spherical washer and the spherical washer seat are both sleeved on the pull rod, and the spherical washer and the spherical washer seat are in spherical fit.

[0013] Furthermore, the spherical washer seat is positioned near the lug, and the spherical washer is located between the spherical washer seat and the adjusting sleeve.

[0014] Furthermore, a positioning sleeve is installed between the second lug and the locking nut. The positioning sleeve is sleeved on the outside of the pull rod and is fixedly installed on the side of the second lug away from the first lug.

[0015] Furthermore, a washer is provided between the positioning sleeve and the locking nut, and the washer is sleeved on the pull rod.

[0016] Furthermore, the locking nut has a threaded hole, in which a screw is installed. The axis of the screw is parallel to the axis of the pull rod, and the end of the screw abuts against the washer.

[0017] Furthermore, the number of threaded holes is at least two, and each threaded hole is evenly distributed in the circumferential direction of the locking nut.

[0018] Furthermore, a retaining ring is also provided inside the bearing mounting hole.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: By setting a slit on the earring body parallel to the axis of the bearing mounting hole, and setting lug 1 and lug 2 with through holes on both sides of the slit, and in conjunction with the built-in adjustment mechanism, the opening of the slit can be controlled and adjusted, which solves the defect of existing technology that can only be adjusted in one direction. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention; Figure 2 Here is a structural diagram of the adjustment mechanism; In the diagram, 1-earring body, 2-hole retaining ring, 3-bearing, 4-lug two, 5-lug one, 6-cut slit, 7-pull rod, 8-spherical washer seat, 9-spherical washer, 10-adjusting sleeve, 11-positioning sleeve, 12-washer, 13-locking nut, 14-screw, 15-adjusting hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1 and 2 As shown, this utility model discloses an adjustable ball joint earring, which includes an earring body 1 and an adjustment mechanism. The earring body 1 has a through bearing mounting hole at its center, and a bearing 3 is installed inside the bearing mounting hole. The earring body 1 has a slit 6 extending through the bearing mounting hole, the slit 6 being parallel to the axis of the bearing mounting hole. On both sides of the slit 6 are oppositely arranged lugs 5 and 4, located on the outer side of the earring body 1. Lug 5 has a first through hole, and lug 4 has a second through hole. The axes of the first and second through holes are collinear. The adjustment mechanism is located within the first and second through holes and is used to adjust the opening or closing of the slit 6.

[0028] By setting a slit 6 parallel to the axis of the bearing mounting hole on the earring body 1, and setting lug 1 5 and lug 2 4 with through holes on both sides of the slit 6, and cooperating with the built-in adjustment mechanism, the opening of the slit 6 can be controlled and adjusted, which solves the defect of the prior art (patent application number CN201721395367.3) that can only be adjusted in one direction. The design of lug 1 5 and lug 2 4 located on the outside of the earring body 1 provides a stable mounting base for the adjustment mechanism, ensuring that the adjustment force can be effectively transmitted to the slit 6, and meeting the requirements of high-precision dynamic working conditions.

[0029] Furthermore, the adjustment mechanism includes a pull rod 7, an adjusting sleeve 10, and a locking nut 13. The pull rod 7 passes through the first through hole and the second through hole, with one end threadedly connected to the first through hole and the other end extending out of the second through hole and threadedly connected to the locking nut 13. The locking nut 13 is located on the side of the lug 2 4 away from the lug 1 5. The adjusting sleeve 10 is movably sleeved on the pull rod 7, and its outer wall is threadedly connected to the second through hole. There is a gap of 2-3 mm between the inner hole of the adjusting sleeve 10 and the pull rod 7. The opening of the slit 6 is adjusted by coordinating the operation of the adjusting sleeve 10 and the locking nut 13. When the adjusting sleeve 10 moves towards the lug 1 5 and the locking nut 13 moves away from the lug 2 4, the slit 6 can be opened. When the adjusting sleeve 10 moves into the second through hole and the locking nut 13 moves towards the lug 2 4, the slit 6 can be tightened.

[0030] The adjustment mechanism adopts a combination structure of pull rod 7, adjustment sleeve 10 and locking nut 13. The adjustment sleeve 10 and locking nut 13 work together to control the opening and tightening of the slit 6 in both directions, breaking through the limitation of existing technology that can only clamp in one direction, realizing arbitrary and precise control of the opening of the slit 6, thereby flexibly adjusting the assembly clearance of the bearing 3.

[0031] Furthermore, the adjusting sleeve 10 has an adjusting hole 15 in the radial direction, and the adjusting hole 15 is located at one end of the adjusting sleeve 10 near the lug 5; when the pin is inserted into the adjusting hole 15, it can drive the adjusting sleeve 10 to rotate.

[0032] An adjustment hole 15 is provided radially on the adjustment sleeve 10, providing a convenient operating point for the rotation of the adjustment sleeve 10. The adjustment sleeve 10 can be easily rotated by inserting a pin, reducing the difficulty of the adjustment operation. The adjustment hole 15 is located at one end close to the lug 5, avoiding interference with other components, ensuring a smooth adjustment process, and improving the operational efficiency of the slit 6 adjustment.

[0033] Furthermore, a spherical washer 9 and a spherical washer seat 8 are provided between the lug 5 and the adjusting sleeve 10. The spherical washer 9 and the spherical washer seat 8 are both sleeved on the pull rod 7, and the spherical washer 9 and the spherical washer seat 8 are in spherical fit; the spherical washer 9 and the spherical washer seat 8 are in clearance fit with the pull rod 7.

[0034] In this invention, the spherical fit between the spherical washer 9 and the spherical washer seat 8 ensures that the force between the adjusting sleeve 10, the spherical washer 9, and the spherical washer seat 8 is always transmitted in a straight line during the opening of the slit 6, thereby ensuring that the adjusting force is evenly applied to both sides of the slit 6 and avoiding local stress concentration.

[0035] In the prior art (patent application number CN201721395367.3), the spherical washer and conical ring are only used to cooperate with the ring sleeve to achieve the balance between preload and reaction force. Their core function is to absorb the load through the deformation of the ring sleeve to protect the backlash-free screw 14, but they cannot solve the problem of force transmission path offset.

[0036] The spherical mating structure of this application can actively compensate for assembly errors and angular offsets, ensuring the linear transmission of force, and can better guarantee adjustment accuracy and structural stability compared with the prior art.

[0037] Furthermore, the spherical washer seat 8 is positioned close to the lug 5, and the spherical washer 9 is located between the spherical washer seat 8 and the adjusting sleeve 10.

[0038] Due to the aforementioned positional layout, the linear force transmission path is further enhanced, enabling the thrust of the adjusting sleeve 10 to be directly and stably transmitted to the lug 5, ensuring that the opening of the slit 6 is precisely controllable.

[0039] Furthermore, a positioning sleeve 11 is installed between the second lug 4 and the locking nut 13. The positioning sleeve 11 is sleeved on the outside of the pull rod 7 and is fixedly installed on the side of the second lug 4 away from the first lug 5. The positioning sleeve 11 is clearance-fitted with the pull rod 7.

[0040] The positioning sleeve 11 can provide radial positioning for the tie rod 7, preventing the tie rod 7 from radially shifting or shaking when under force, thus ensuring stability and reliability during the adjustment process.

[0041] Furthermore, a washer 12 is provided between the positioning sleeve 11 and the locking nut 13, and the washer 12 is sleeved on the pull rod 7 and has a clearance fit with the pull rod 7.

[0042] The presence of the shim 12 increases the contact area between the locking nut 13 and the positioning sleeve 11, disperses the pressure applied by the locking nut 13, and prevents the positioning sleeve 11 or the lug 4 from deforming due to excessive local stress. The shim 12 can also reduce the direct friction between the locking nut 13 and the positioning sleeve 11, and reduce component wear.

[0043] Furthermore, the locking nut 13 has a threaded hole, and a screw 14 is installed in the threaded hole. The axis of the screw 14 is parallel to the axis of the pull rod 7, and the end of the screw 14 abuts against the washer 12.

[0044] By abutting the end of the screw 14 against the washer 12, the rotational tendency of the locking nut 13 caused by vibration under working conditions can be counteracted, thereby preventing relative rotation between the locking nut 13 and the pull rod 7 and avoiding loosening. The parallel arrangement of the axis of the screw 14 and the axis of the pull rod 7 ensures that the pressure of the screw 14 on the washer 12 is evenly distributed, preventing the washer 12 from being unbalanced.

[0045] Furthermore, the number of threaded holes is at least two, and each threaded hole is evenly distributed in the circumferential direction of the locking nut 13.

[0046] Furthermore, a retaining ring 2 for the bearing mounting hole is also provided inside the bearing mounting hole.

[0047] A retaining ring 2 is installed in the bearing mounting hole to provide axial positioning for the bearing 3 assembled in the bearing mounting hole.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable ball joint earring, characterized in that: It includes an earring body (1) and an adjustment mechanism; the earring body (1) has a through bearing mounting hole in the center, and the earring body (1) has a slit (6) that extends through to the bearing mounting hole. The slit (6) is parallel to the axis of the bearing mounting hole. On both sides of the slit (6) are a lug 1 (5) and a lug 2 (4) that are arranged opposite to each other. The lug 1 (5) and the lug 2 (4) are located outside the earring body (1). The lug 1 (5) has a first through hole, and the lug 2 (4) has a second through hole. The axes of the first through hole and the second through hole are collinear. The adjustment mechanism is located in the first through hole and the second through hole and is used to adjust the opening or tightening of the slit (6). The adjustment mechanism includes a pull rod (7), an adjustment sleeve (10), and a locking nut (13); the pull rod (7) passes through the first through hole and the second through hole, one end of which is threaded to the first through hole, and the other end extends out of the second through hole and is threaded to the locking nut (13); the locking nut (13) is located on the side of the lug 2 (4) away from the lug 1 (5); the adjustment sleeve (10) is movably sleeved on the pull rod (7), and its outer wall is threaded to the second through hole; A positioning sleeve (11) is installed between the lug 2 (4) and the locking nut (13). The positioning sleeve (11) is sleeved on the outside of the pull rod (7), and the positioning sleeve (11) is fixedly installed on the side of the lug 2 (4) away from the lug 1 (5). A washer (12) is provided between the positioning sleeve (11) and the locking nut (13), and the washer (12) is sleeved on the pull rod (7); The locking nut (13) has a threaded hole, and a screw (14) is installed in the threaded hole. The axis of the screw (14) is parallel to the axis of the pull rod (7), and the end of the screw (14) abuts against the washer (12).

2. The adjustable ball joint earring according to claim 1, characterized in that: The adjusting sleeve (10) has an adjusting hole (15) in the radial direction, and the adjusting hole (15) is located at one end of the adjusting sleeve (10) near the lug (5).

3. The adjustable ball joint earring according to claim 1, characterized in that: A spherical washer (9) and a spherical washer seat (8) are provided between the lug (5) and the adjusting sleeve (10). The spherical washer (9) and the spherical washer seat (8) are both sleeved on the pull rod (7). The spherical washer (9) and the spherical washer seat (8) are in spherical fit.

4. The adjustable ball joint earring according to claim 3, characterized in that: The spherical washer seat (8) is located near the lug 1 (5), and the spherical washer (9) is located between the spherical washer seat (8) and the adjusting sleeve (10).

5. The adjustable ball joint earring according to claim 1, characterized in that: The locking nut (13) has at least two threaded holes, and each threaded hole is evenly distributed in the circumferential direction of the locking nut (13).

6. The adjustable ball joint earring according to claim 1, characterized in that: The bearing mounting hole is also provided with a retaining ring (2).

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