CN216430253U

CN216430253U - Threaded rod end joint bearing

Info

Publication number: CN216430253U
Application number: CN202120940296.0U
Authority: CN
Inventors: 胡建伟
Original assignee: Odeke Intelligent Steering System Zhejiang Co ltd
Current assignee: Odeke Intelligent Steering System Zhejiang Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-05-03
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a thread type rod end joint bearing, which comprises: the rod end body is provided with an outer ring body, an inner ring body is arranged in the outer ring body, and a threaded sleeve is arranged between the inner ring body and the outer ring body; the outer edge of the threaded sleeve is in threaded connection with an outer ring body, and the inner ring body is arranged inside the threaded sleeve; wherein, the outer ring body and the inner ring body are concentrically arranged. Through add the thread bush between inner race body and the outer race body, change the connection structure of inner race body and outer race body, utilize the helicitic texture who distributes at the thread bush foreign aid to promote joint bearing's tensile strength, effectively avoid the inner race body to deviate from the outer race body in joint bearing working process, the locking is firm, and the assembly is convenient, especially has excellent stability in heavy machinery field.

Description

Threaded rod end joint bearing

Technical Field

The utility model relates to the technical field of joint bearings, in particular to a threaded rod end joint bearing.

Background

The joint bearing is a spherical sliding bearing, the sliding contact surface of which is an inner spherical surface and an outer spherical surface, and can rotate and swing at any angle during movement.

The joint bearing mainly comprises an inner ring body with an outer spherical surface and an outer ring body with an inner spherical surface. The joint bearing is generally used for swinging motion (namely angular motion) with low speed, and can also perform tilting motion (namely aligning motion) within a certain angle range because the sliding surface is spherical, and can still normally work when the concentricity of the supporting shaft and the shaft shell hole is large.

The joint bearing is widely applied to the industries of engineering hydraulic oil cylinders, forging and pressing machine tools, engineering machinery, automation equipment, automobile shock absorbers, hydraulic machinery and the like. However, most of the joint bearings in the current market adopt a mode that an inner ring body is pressed into an outer ring body, and limit pieces such as a sealing ring are clamped outside the inner ring body for assembly; although this kind of mode is low in processing cost, and the process is simple, nevertheless the main problem that faces is, when joint bearing application is in the heavy apparatus field, joint bearing inner ring body can bear very big pulling force in the operation, and the joint bearing of pressing the joint connection appears limit structure not hard up easily in last long-term working process, and then probably appears the phenomenon that the inner ring body deviates from the outer ring body, cause the bearing failure even equipment to damage, consequently adopt mode assembly moulding's rod end joint bearing such as pressfitting connection, welding, block connection, the limit structure of this kind of bearing inner ring body is fragile relatively, can't eliminate above-mentioned hidden danger, the market demand is waited to satisfy urgently.

For example, chinese patent with publication number "CN 202628809U" discloses a "split joint bearing", which is composed of a bearing outer ring and a bearing inner ring, wherein the bearing outer ring is sleeved outside the bearing inner ring; the bearing is characterized in that a seam perpendicular to the end face is machined on the inner side of the bearing outer ring, and the depth distance of the seam is 3-4 mm from the outer diameter; and pressing the bearing inner ring into the bearing outer ring. The scheme has the advantages of being simple and convenient to machine, easy to assemble, capable of improving the rate of finished products and the like, but inevitably, the joint bearing provided by the scheme is applied to heavy machinery, the phenomenon that the inner ring body is separated from the outer ring body is easy to occur, the bearing is invalid, and the operation stability of the joint bearing cannot be guaranteed.

Disclosure of Invention

Aiming at the problems that the joint bearing assembled by adopting the modes of pressing, embedding, welding and the like in the prior art is applied to the field of heavy machinery and the joint bearing is easy to lose efficacy due to the fact that an inner ring body is pulled to be separated from an outer ring body, the utility model provides the threaded rod end joint bearing.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a threaded rod end knuckle bearing comprising: the rod end body is provided with an outer ring body, an inner ring body is arranged in the outer ring body, and a threaded sleeve is arranged between the inner ring body and the outer ring body; the outer edge of the threaded sleeve is in threaded connection with an outer ring body, and the inner ring body is arranged inside the threaded sleeve; wherein, the outer ring body and the inner ring body are concentrically arranged.

After the inner ring body is arranged in the threaded sleeve, the threaded sleeve is used for wrapping and limiting the inner ring body, and meanwhile, the threaded sleeve is in threaded connection with the inner wall of the outer ring body through external threads, so that large tensile force from the inner ring body and a movable rod on the inner ring body can be completely resisted, and the inner ring body is prevented from being separated from the outer ring body along with the threaded sleeve. Utilize the concentric characteristics that set up of inner race body and outer race body, guarantee that the inner race body packs into the thread bush and closes soon together and get into the outer race body after, the three all is concentric, provides good structural foundation for rod end joint bearing's even running, avoids leading to lubricating layer certain region stress concentration by rapid wear because of the decentraction to reduce joint bearing's operating stability and life's problem. The application provides a concentric structure rod end joint bearing can possess better silence nature and stability in the operation process. Adopt helicitic texture assembly joint bearing in this application, compare in traditional pressfitting connection, through control helicitic texture size when adding man-hour, the accurate adjustment oil clearance of being more convenient for joint bearing's whole processing precision degree obtains promoting, and then improves product quality, reinforcing market competition.

Preferably, the outer ring body comprises a first ring opening and a second ring opening along the axial direction, the first ring opening is provided with a mounting opening, the thread bushing is screwed into the outer ring body from the mounting opening, the joint bearing can be quickly assembled, and the movable rod assembled on the inner ring body can freely rotate outside the first ring opening.

Preferably, an assembly groove is formed in the inner wall of the threaded sleeve, a connecting sleeve is arranged in the assembly groove in a clamping mode, and the connecting sleeve is sleeved with the inner ring body. The assembly groove is used for the block staple bolt in the adapter sleeve of inner circle body, avoids the adapter sleeve to deviate from the thread bush and causes bearing separation inefficacy, the assembly groove is the annular structure, can guarantee that the adapter sleeve gomphosis is complete in the thread bush, ensures heavy machinery and uses joint bearing's operating stability.

Preferably, the inner wall of the connecting sleeve is provided with a lubricating layer. The lubricating layer comprises but not limited to plastic layer, graphite layer, lubricating grease and other materials capable of reducing the relative friction between the inner ring body and the connecting sleeve, and the tight fit between the inner ring body and the connecting sleeve is ensured

Further, the lubricating layer is a plastic layer. The lubricating layer is formed by injection molding by using plastics including but not limited to POM, PTFE, PA, reinforced nylon and the like as raw materials, and the common property of the materials is that the materials have internal crystallization crystals, so that the surface roughness is low, and the self-lubricating property is shown. In the embodiment, the main chemical component of the lubricating layer 4 is polyamide, the wear resistance is excellent, and the groups have good rigidity and flexibility by virtue of a plurality of repeated amide groups contained in the main chain of the polyamide, and the aggregation state of the groups can form a smooth surface structure, so that the surface friction coefficient of the material is low, and the material has good self-lubricating property. Meanwhile, blending materials such as glass fiber and a toughening agent are additionally added into the reinforced nylon, so that the mechanical properties such as tensile strength, bending strength and toughness of the lubricating layer can be effectively improved, and the lubricating layer can provide a stable lubricating effect in the operation of the rod end knuckle bearing.

Preferably, the inner side of the second ring opening is provided with a limiting part, and the limiting part extends towards the middle part of the second ring opening along the inner diameter direction of the outer ring body. Spacing portion and outer lane body formula structure as an organic whole through spacing portion as rod end joint bearing's rigid limit structure, realizes the throat to the second circle mouth to it is spacing to block inner lane body back, ensures that the inner lane body can not deviate from the outer lane body from the second circle mouth.

Furthermore, a fixing hole is formed in the first ring opening, the fixing hole is formed in the junction of the first ring opening and the threaded sleeve, and a locking piece is arranged in the fixing hole. The locking part is nailed into the terminal surface of outer lane body from the fixed orifices, further promotes the stability of being connected of thread bush and outer lane body, avoids the thread bush in the joint bearing operation in-process to take place relative rotation and cause the thread bush not hard up with the outer lane body, and destroys the external screw thread of thread bush through the fixed orifices, under the locking state of locking part for the relative rotation of thread bush and outer lane body probably is eliminated completely.

Preferably, the outer surface of one end of the rod end body, which is far away from the outer ring body, is provided with an external thread structure. The rod end body is of a screw rod structure and is used for connecting screw holes of various mechanical equipment. The rod end body provided with the external threads can be connected with various devices provided with threaded holes, such as medical instruments and textile machinery, and the thread structures can guarantee the connection stability between the rod end joint bearing and the mounting base body.

Preferably, the rod end body is of a hollow structure, and an internal thread structure is arranged on the hollow inner wall of the rod end body. Be provided with the internal thread rod end body and be used for installing on the screw rod of all kinds of equipment, can avoid effectively promoting rod end joint bearing's adaptability and general usefulness to the trompil of equipment.

The utility model has the beneficial effects that: (1) the threaded sleeve is additionally arranged between the inner ring body and the outer ring body, the connecting structure of the inner ring body and the outer ring body is changed, the tensile strength of the knuckle bearing is improved by utilizing the threaded structure distributed at the outer edge of the threaded sleeve, the inner ring body is effectively prevented from being separated from the outer ring body in the working process of the knuckle bearing, the locking is firm, the assembly is convenient and fast, and the stability is excellent particularly in the field of heavy machinery; (2) after the inner ring body is arranged in the threaded sleeve and is screwed together into the outer ring body, the inner ring body, the threaded sleeve and the outer ring body are concentric, a good structural foundation is provided for the stable operation of the rod end knuckle bearing, and the problems that the operating stability and the service life of the knuckle bearing are reduced due to the fact that a certain area of a lubricating layer is quickly abraded due to stress concentration caused by non-concentricity are avoided; (3) compared with the traditional press-fit connection, the joint bearing assembled by the threaded structure is more convenient to accurately adjust the oil clearance by controlling the size of the threaded structure during machining, so that the overall machining precision of the joint bearing is improved, the product quality is further improved, and the market competitiveness is enhanced; (4) the locking piece is nailed into the end face of the outer ring body from the fixing hole, the connection stability of the threaded sleeve and the outer ring body is further improved, the threaded sleeve is prevented from loosening due to relative rotation between the threaded sleeve and the outer ring body in the operation process of the joint bearing, the external thread of the threaded sleeve is damaged through the fixing hole, and the relative rotation between the threaded sleeve and the outer ring body can be completely eliminated in the locking state of the locking piece; (5) the rod end body comprises a male rod end provided with an external thread and a female rod end provided with an internal thread, and adaptability and general applicability of the rod end joint bearing are effectively improved.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a front view of the present invention;

3 FIG. 3 4 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 A 3- 3 A 3 in 3 FIG. 3 3 3; 3

In the figure: 1. the rod end body, 2, the outer ring body, 21, first circle mouth, 22, second circle mouth, 3, the inner ring body, 4, thread bush, 41, assembly groove, 5, installing port, 6, adapter sleeve, 7, spacing portion, 8, lubricating layer, 9, fixed orifices, 91, locking part, 10, spanner installing hole.

Detailed Description

The utility model is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1 and 2, a threaded rod end joint bearing includes: the rod end body 1 is provided with an outer ring body 2, an inner ring body 3 is arranged in the outer ring body, and a threaded sleeve 4 is arranged between the inner ring body and the outer ring body; the outer edge of the threaded sleeve is in threaded connection with an outer ring body, and the inner ring body is arranged inside the threaded sleeve; wherein, the outer ring body and the inner ring body are concentrically arranged. The outer ring body comprises a first ring opening 21 and a second ring opening 22 along the axial direction, and the first ring opening is provided with a mounting opening 5. An assembly groove 41 is formed in the inner wall of the threaded sleeve, a connecting sleeve 6 is arranged in the assembly groove in a clamping mode, and the connecting sleeve is sleeved with the inner ring body.

After the inner ring body is arranged in the threaded sleeve, the threaded sleeve is used for wrapping and limiting the inner ring body, and meanwhile, the threaded sleeve is in threaded connection with the inner wall of the outer ring body through external threads, so that large tensile force from the inner ring body and a movable rod on the inner ring body can be completely resisted, and the inner ring body is prevented from being separated from the outer ring body along with the threaded sleeve. Utilize the concentric characteristics that set up of inner race body and outer race body, guarantee that the inner race body packs into the thread bush and closes soon together and get into the outer race body after, the three all is concentric, provides good structural foundation for rod end joint bearing's even running, avoids leading to lubricating layer certain region stress concentration by rapid wear because of the decentraction to reduce joint bearing's operating stability and life's problem. The application provides a concentric structure rod end joint bearing can possess better silence nature and stability in the operation process.

As shown in fig. 3 and 4, the threaded sleeve is screwed into the outer ring body from the mounting opening, so that the joint bearing can be quickly assembled, and the movable rod assembled on the inner ring body can be freely rotated outside the first ring opening. The assembly groove is used for the block staple bolt in the adapter sleeve of inner circle body, avoids the adapter sleeve to deviate from the thread bush and causes bearing separation inefficacy, the assembly groove is the annular structure, can guarantee that the adapter sleeve gomphosis is complete in the thread bush, ensures heavy machinery and uses joint bearing's operating stability.

And a lubricating layer 8 is arranged on the inner wall of the connecting sleeve. The lubricating layer is a plastic layer. The lubricating layer is formed by injection molding by using plastics including but not limited to POM, PTFE, PA, reinforced nylon and the like as raw materials, and the common property of the materials is that the materials have internal crystallization crystals, so that the surface roughness is low, and the self-lubricating property is shown. In the embodiment, the main chemical component of the lubricating layer 4 is polyamide, the wear resistance is excellent, and the groups have good rigidity and flexibility by virtue of a plurality of repeated amide groups contained in the main chain of the polyamide, and the aggregation state of the groups can form a smooth surface structure, so that the surface friction coefficient of the material is low, and the material has good self-lubricating property. Meanwhile, blending materials such as glass fiber and a toughening agent are additionally added into the reinforced nylon, so that the mechanical properties such as tensile strength, bending strength and toughness of the lubricating layer can be effectively improved, and the lubricating layer can provide a stable lubricating effect in the operation of the rod end knuckle bearing.

The inner side of the second ring opening is provided with a limiting part 7, and the limiting part extends towards the middle of the second ring opening along the inner diameter direction of the outer ring body. Spacing portion and outer lane body formula structure as an organic whole through spacing portion as rod end joint bearing's rigid limit structure, realizes the throat to the second circle mouth to it is spacing to block inner lane body back, ensures that the inner lane body can not deviate from the outer lane body from the second circle mouth.

The first ring opening is provided with a fixing hole 9, the fixing hole is formed in the junction of the first ring opening and the threaded sleeve, and a locking piece 91 is arranged in the fixing hole. The locking part is nailed into the terminal surface of outer lane body from the fixed orifices, further promotes the stability of being connected of thread bush and outer lane body, avoids the thread bush in the joint bearing operation in-process to take place relative rotation and cause the thread bush not hard up with the outer lane body, and destroys the external screw thread of thread bush through the fixed orifices, under the locking state of locking part for the relative rotation of thread bush and outer lane body probably is eliminated completely.

In this embodiment, the threaded sleeve is provided with a wrench operation hole 10 near the outer end face of the first ring opening. Because the threaded sleeve is screwed and is immersed into the first round opening to complete assembly, the common assembly method cannot ensure that the threaded sleeve is assembled in place, the internal angle wrench is connected with the threaded sleeve through the wrench operation hole 10, the threaded sleeve can be conveniently and quickly operated to complete assembly, and the assembly precision meets the design requirement.

And an external thread structure is arranged on the outer surface of one end of the rod end body, which is far away from the outer ring body. The rod end body is of a hollow structure, and an internal thread structure is arranged on the hollow inner wall of the rod end body.

The rod end body is of a screw rod structure and is used for connecting screw holes of various mechanical equipment. The rod end body provided with the external threads can be connected with various devices provided with threaded holes, such as medical instruments and textile machinery, and the thread structures can guarantee the connection stability between the rod end joint bearing and the mounting base body. Be provided with the internal thread rod end body and be used for installing on the screw rod of all kinds of equipment, can avoid effectively promoting rod end joint bearing's adaptability and general usefulness to the trompil of equipment.

In this embodiment, the rod end body and the outer ring body are of an integrated structure, and the rod end body and the inner ring body disclosed by the present invention are made of the following materials: bearing steel, stainless iron, 40-wire steel, aluminum alloys, copper, and carbon steel. The bearing steel has good hardness and wear resistance, and is commonly used in bearing manufacturing; the stainless steel and the stainless iron have better corrosion resistance, and are suitable for manufacturing rod end joint bearings which are possibly corroded in working environments such as underwater equipment or food industry; the 40-strand steel is widely used as a steel material in the machinery manufacturing industry, has good comprehensive mechanical properties and low notch sensitivity, and can effectively improve the working performance stability and the service life of the rod end knuckle bearing; the aluminum alloy has the characteristics of high strength and good plasticity, is convenient to machine and form and meets the requirement of light weight; the copper rod end joint bearing has the characteristics of good ductility, good fitting degree after assembly and capability of ensuring the operation stability of the bearing; the carbon steel has low cost, and the carbon steel can be used for processing the rod end joint bearing in the application field without special requirements, so that the economic benefit is good. Under the condition of meeting the requirements of basic mechanical property and surface treatment, other materials can be used for processing and manufacturing the rod end joint bearing according to the requirements. In this embodiment, thread bush and adapter sleeve are the copper spare, and the copper spare hardness is high, and the wearability is fabulous, is difficult for producing the seizure phenomenon, has better casting performance and cutting process performance.

The assembly process of the rod end oscillating bearing in the embodiment is as follows: firstly, arranging a reinforced nylon lubricating layer on the inner wall of the connecting sleeve, so that the lubricating layer has uniform density and complete structure, and the inner surface 6 is smooth and has no defects; then the connecting sleeve 6 is arranged in an assembling groove 41 in the threaded sleeve, the inner ring body 3 is arranged in the connecting sleeve 41, and finally the front side and the rear side of the inner ring body are punched through a wrapping and pressing process to ensure that the inner cambered surface of the connecting sleeve 6 is attached to the inner ring body 3 and the outer cambered surface of the connecting sleeve 3 is embedded in the assembling groove 41. After the inner ring body, the connecting sleeve and the threaded sleeve are combined to obtain an assembly, the outer edge of the assembly is threaded, so that a threaded structure matched with the inner wall of the outer ring body is formed on the outer side of the threaded sleeve 4; then coating anaerobic glue on the outer edge of the thread bush 4 and screwing the thread bush in the outer ring body. At the moment, the inner ring body and the outer ring body are kept in a concentric state, and the inner ring body cannot be separated from the first ring opening under the limit of the threaded sleeve of the inner ring body. Finally, a fixing hole 9 is drilled at the joint position of the first ring opening and the threaded sleeve, and the threaded sleeve 91 is locked by using a screw as a locking piece, so that relative rotation between the threaded sleeve and the outer ring body cannot occur, and the operation stability of the joint bearing is remarkably improved.

The pole end body that possesses the external screw thread is public class pole end body, possesses the internal screw thread pole end body and is female class pole end body, and the demand of the adaptable all kinds of mechanical equipment of rod end joint bearing can be guaranteed to the variety ability of different structure pole end bodies, effectively promotes rod end joint bearing's adaptability and general usefulness.

In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.

Claims

1. A threaded rod end knuckle bearing, comprising:

the rod end body is provided with an outer ring body, an inner ring body is arranged in the outer ring body, and a threaded sleeve is arranged between the inner ring body and the outer ring body;

the outer edge of the threaded sleeve is in threaded connection with an outer ring body, and the inner ring body is arranged inside the threaded sleeve;

wherein, the outer ring body and the inner ring body are concentrically arranged.

2. The threaded rod end knuckle bearing of claim 1, wherein the outer race body includes a first race opening and a second race opening in an axial direction, the first race opening having a mounting opening disposed therein.

3. The threaded rod end joint bearing according to claim 2, wherein a limiting portion is disposed inside the second ring opening, and the limiting portion extends toward a middle portion of the second ring opening along an inner diameter direction of the outer ring body.

4. A threaded rod end joint bearing according to any one of claims 1-3, wherein an assembly groove is formed in an inner wall of the threaded sleeve, a connecting sleeve is arranged in the assembly groove in a clamping manner, and the connecting sleeve is sleeved with the inner ring body.

5. The threaded rod end joint bearing according to claim 4, wherein the inner wall of the connecting sleeve is provided with a lubricating layer.

6. The threaded rod end joint bearing of claim 5, wherein the lubrication layer is a plastic layer.

7. The threaded rod end joint bearing according to claim 2, wherein a fixing hole is formed in the first collar, the fixing hole is formed at the intersection of the first collar and the threaded sleeve, and a locking piece is arranged in the fixing hole.

8. The threaded rod end joint bearing of claim 1, wherein an outer surface of the rod end body distal from the outer ring body is provided with an external thread structure.

9. The threaded rod end joint bearing according to claim 1, wherein the rod end body is hollow, and an internal thread structure is provided on a hollow inner wall of the rod end body.