WO2022247361A1

WO2022247361A1 - New-type pulley bearing and mounting method therefor, pulley component, and pulley assembly

Info

Publication number: WO2022247361A1
Application number: PCT/CN2022/077051
Authority: WO
Inventors: 李丹; 武进步
Original assignee: 李丹
Priority date: 2021-05-27
Filing date: 2022-02-21
Publication date: 2022-12-01

Abstract

A new-type pulley bearing and a mounting method therefor, a pulley component, and a pulley assembly. The new-type pulley bearing comprises an inner ring (110), an outer ring (120) and rolling elements (130). The inner ring (110) comprises an inner ring main body (111), a first flange (112) and a second flange (113), wherein the first flange (112) and the second flange (113) are respectively located at two ends of the inner ring main body (111); several fixed middle flanges (120) are provided on an inner side of the outer ring (120) to space apart the adjacent rolling elements (130); and the first flange (112) and/or the second flange (113) is/are detachably connected to the inner ring main body (111). The inner ring main body is of an integral non-split structure without a middle flange, which reduces grooving, punching, hoop clamping, etc., involved in a splitting process and reduces machining faces of the middle flanges. In addition, the inner ring has no middle flange, the outer ring has a large middle flange width adjustment space, and thus on the condition that the pulley bearing has the same outline dimension as an existing bearing, the length of the rolling element can be appropriately increased, such that the load carrying capacity of the bearing is improved, and the pulley bearing has a simple process and high load carrying capacity.

Description

A new type of pulley bearing and its installation method, pulley assembly and pulley assembly

technical field

The invention relates to the technical field of pulley bearings, in particular to a novel pulley bearing and its installation method, a pulley assembly and a pulley assembly.

Background technique

In the prior art, pulleys are widely used in various hoisting machinery, and are usually arranged in the form of a single pulley or a block of pulleys. The arrangement of a single pulley is shown in FIG. 1 , and the arrangement of a block of pulleys is shown in FIG. 2 .

The pulley bearing is a self-lubricating double row full complement cylindrical roller bearing with a stop groove on the outer ring, and it is also a positioning bearing. These bearings are very rigid and can withstand high radial forces and moderate bidirectional axial forces. The outer ring of the pulley bearing has a middle rib and no ribs on both sides. Both sides of the mounting surface of the outer ring are grooved to facilitate the installation of snap rings, making the tightly fitted pulley and bearing a reliable whole after installation. The inner ring of the pulley bearing has a middle rib and ribs on both sides. In order to ensure the coaxiality of the two rows of raceways and the mounting surface, the inner ring is processed as a whole. In order to facilitate the installation of rolling elements, the inner ring must be split axially during the assembly stage, and after the rolling elements are installed in place, they are connected together by clamps. The inner ring of the pulley bearing is slightly wider than the outer ring. When the pulley bearing is used in the arrangement of pulley blocks, the outer rings of adjacent bearings can avoid running interference. As a self-lubricating sealed bearing, sealing rings are installed on the ribs on both sides of the inner ring.

In the arrangement of a single pulley, as shown in Figure 3, the pulley is rotatably fixed on the pulley shaft through a bearing, and the inner ring of the bearing is supported by a retaining ring and a shaft shoulder to provide axial support.

In the arrangement of multiple pulleys, as shown in Figure 4, the inner rings of adjacent pulley bearings are axially supported by each other, and the two sides of the pulley bearing group are respectively supported by retaining rings and/or shaft shoulders to form Axial support positioning.

As shown in Figure 5, it is a schematic diagram of the installation process of the existing pulley bearing, including steps: a. The inner ring is processed and formed, including the turning/grinding of multiple surfaces of the mid-range edge, and the groove processing on the inner and outer sides of the mid-range edge; b. Use special tools and tooling to punch the inner ring into two symmetrical parts; c. Install the rolling elements into the left and right inner ring raceways respectively, and install them in place from both sides, and install the sealing ring; d. After the row inner ring and the rolling element assembly are installed in place, the two row inner rings are tightened by the clamp.

To sum up, the pulley bearing is a double-row full complement locating bearing. In order to facilitate the installation of rolling elements, the inner ring adopts a split structure, and the process is complicated. First of all, groove and break the inner ring, and after the two rows are loaded into the rolling elements, they are locked with clamps. The process involves many processing surfaces, the process flow is complicated, and the cost is high. At the same time, due to the existence of the clamp groove and the rib in the inner ring, the length of the rolling elements is limited, thereby limiting the radial bearing capacity of the bearing.

Therefore, whether it is possible to design a pulley bearing with simple processing technology and strong radial bearing capacity is the problem that this patent intends to solve.

Contents of the invention

Aiming at the above defects in the prior art, the present invention provides a new type of pulley bearing and its installation method, a pulley assembly and a pulley assembly, which realize the purpose of simple processing technology and strong bearing capacity of the pulley bearing.

The technical solution provided by the present invention is as follows: a new type of pulley bearing, including an inner ring and an outer ring located on the same center line, the inner ring and the outer ring are provided with a gap, and a number of rolling bodies are installed between them, and the inner ring includes The main body of the inner ring, the first rib and the second rib, the first rib and the second rib are respectively located at both ends of the main body of the inner ring; a number of fixed middle ribs are arranged on the inner side of the outer ring, to isolate the adjacent rolling elements; wherein, the first rib and/or the second rib are detachably connected to the main body of the inner ring. The presence of the detachable connecting rib makes it possible to have a one-piece inner ring with a non-split structure.

Further, the inner ring main body is a one-piece non-split structure.

The technical proposal discloses a new pulley bearing with non-split inner ring, which reduces the processes of slotting, punching, and clamp clamping involved in the splitting process, and reduces the processing difficulty and cost of the pulley bearing. In addition, the inner ring clamp and the clamp groove are canceled, and the existence of the inner ring clamp and the clamp groove occupies a large axial dimension, so that the length of the rolling element is limited, and the non-split design of the inner ring is cancelled. this limiting factor.

Further, the inner ring has no center rib structure, the inner ring main body and the first rib are integrally structured, and are detachably connected to the second rib, and the second rib is circular structure.

The technical solution discloses a specific structure of the inner ring. On the one hand, the inner ring has no center rib structure, and the through-type design of the raceway reduces multiple processing surfaces of the center rib. On the other hand, in the case of canceling the ribs in the inner ring, only the ribs in the outer ring are used to separate the rolling elements, and the rib width adjustment space in the outer ring is large, so that the pulley bearing has the same external dimensions as the existing bearings. Under certain conditions, the length of the rolling elements can be appropriately increased, thereby increasing the radial load capacity of the bearing. Through the structural features of the above two aspects, the purpose of simple processing technology and strong bearing capacity of the pulley bearing is realized.

This technical solution further discloses the specific structure of the inner ring. By designing the main body of the inner ring and the first rib into an integrated structure, and the structural form of the detachable connection between the second rib and the main body of the inner ring, the product is realized. Technical effect for ease of assembly. Specifically, in the actual assembly process, the rolling elements can be installed on the outer ring first, and then the inner ring can be installed in the outer ring toward the direction of the second rib, and then the second rib and the sealing ring can be installed. Compared with the assembling process of the existing bearing, the present invention is easier to install the inner ring, and reduces the process of fixing the inner ring by clamps in the assembling process of the existing bearing.

Further, one end of the main body of the inner ring is stepped on the side close to the outer ring, forming a rib installation spigot, and the diameter of the inner hole of the second rib is equal to the diameter of the stepped surface of the inner ring, so The inner hole of the second rib is mated with the stepped surface of the inner ring body, and the second rib axially abuts against the end face of the rib installation spigot; wherein, the second rib and the The above-mentioned edge installation spigot step surface interference fit connection, or screw connection, or thread connection, or lock connection, or glue connection, or any two connection methods above.

Further, the side of the second rib close to the main body of the inner ring and the axis of rotation of the bearing is an installation gap, the diameter of the inner hole of the second rib is equal to the diameter of the inner hole of the inner ring, and the inner hole The diameter of the step surface of the ring main body is consistent with the diameter of the inner hole of the installation notch of the second rib; the end face of the inner ring; the notch inner hole of the second rib and the stepped surface of the inner ring can be connected through interference fit, or screw connection, or thread connection, or lock connection, or glue connection, or Any two of the above connection methods are connected together.

Further, the side of the second rib close to the main body of the inner ring and the axis of rotation of the bearing is an installation gap, the diameter of the inner hole of the second rib is equal to the diameter of the inner hole of the inner ring, and the installation The diameter of the inner hole of the notch is equal to the diameter of the raceway surface of the inner ring; the inner hole of the installation notch is mated with the raceway surface of the inner ring, and the end face of the installation notch is axially against the end face of the inner ring; The second rib is connected to the raceway surface of the inner ring through an interference fit through the inner hole of the notch, or a screw connection, or a screw connection, or a lock connection, or a glue connection, or any two connection methods above.

The technical solution further discloses the structural form of the detachable rib and the corresponding inner ring main body. Specifically, the first structural form is provided with a step structure on the inner ring main body, so that the second rib can be detached. It is connected tightly with the stepped surface of the inner ring, and forms an axial support for the second rib through the installation notch of the inner ring. The second structural form, the main body of the inner ring is provided with a stepped structure, the second rib is provided with a mounting gap, the inner hole of the second rib notch can match the stepped surface of the inner ring, and the end of the inner ring faces the second rib notch The end face forms an axial support. In the third structural form, the main body of the inner ring is not provided with a stepped structure, and the second rib is provided with a mounting notch. The end face of the edge notch forms an axial support.

For the above three kinds of pulley bearings, in practical applications, whether it is used for the arrangement of a single pulley or for the arrangement of multiple pulleys, the second rib, that is, the split rib, can reliably bear the axial load. Specifically, when the present pulley bearing is used in a single roller skating arrangement, due to the axial support function of the shaft shoulder and the washer, the detachable ribs of the three kinds of pulley bearings can all be reliably axially supported. When the pulley bearing is used for multiple roller skating arrangements, and the second rib is arranged in the same direction as the split rib, when the axial force of the bearing points to the split rib, the split rib is formed by the adjacent The fixed rib of the bearing is supported axially, and ultimately this axial force is transmitted by the inner ring of the adjacent bearing to the shoulder or washer. When the pulley bearing is used in multiple roller skating arrangements, and the second rib is arranged opposite to the detachable rib, when the axial force of the bearing points to the detachable rib, the detachable rib is supported by the adjacent bearing The detachable rib of the adjacent bearing is axially supported by the detachable rib, and the detachable rib of the adjacent bearing is axially supported by the rib installation spigot or the inner ring end face of the inner ring of the bearing, and finally the axial force is provided by the adjacent bearing. The inner ring is transferred to the shaft shoulder or washer.

Further, a sealing groove is formed on a side of the first rib and/or the second rib facing the outer ring, and the sealing groove is used for installing a sealing ring.

An installation method of a new pulley bearing, which is used to install any of the above new pulley bearings, includes the following steps: Step 1: Put a number of rolling bodies into the outer ring, and put a number of rolling bodies in the middle The ribs are arranged in multiple rows; Step 2: Put the inner ring main body into the outer ring, when the inner ring main body and the first rib are integrated, the inner ring main body is composed of The first rib is loaded into the outer ring towards the direction of the second rib; Step 3: install the second rib on the side of the inner ring body away from the first rib ; Step 4: Install the sealing rings at the first rib and the second rib respectively.

This technical solution further discloses the installation method of the above-mentioned new type pulley bearing. Compared with the installation method of the existing bearings, the inner ring body is designed as an integral structure, and the inner ring is no longer split. The process of splitting the middle inner ring and fixing two rows of inner rings with clamps. The installation method is easier to implement than the existing bearing installation method, has fast production cycle and low production cost.

The technical solution further discloses a pulley assembly, which includes a wheel body and a snap ring installed in the groove of the outer ring of the pulley bearing, and also includes the above-mentioned new pulley bearing.

The technical solution further discloses a pulley assembly. Including said several pulley assemblies, pulley shafts and axial washers. The several pulley assemblies, the pulley shafts and the axial retaining ring are located on the same center line, the several pulley assemblies are rotatably fixed on the pulley shafts through the new pulley bearings, the pulley shafts can be provided with shoulders, and the Several new pulley bearings are installed between the axial washers or between the axial washers and the shaft shoulder. The second ribs of different new type pulley bearings are all arranged towards the same direction, or the second ribs of two adjacent new type pulley bearings are arranged facing each other.

The pulley assembly involved in the present invention can reliably withstand bidirectional axial load no matter whether it is equipped with a single pulley assembly or a plurality of pulley assemblies in any direction.

Technical effect of the present invention is:

1. The integral non-split design of the main structure of the inner ring reduces the processes involved in the split process, such as slotting, punching, clamp groove processing and clamp clamping, simplifies the processing process, and optimizes the cost.

2. The through-type design of the inner ring raceway reduces the multiple processing surfaces of the middle rib, simplifies the processing technology and optimizes the cost.

3. The ribs and clamp grooves in the inner ring are canceled, the structure of the inner ring does not limit the length of the rolling elements, and the width of the ribs in the outer ring has a large adjustment space, so that the pulley bearing has the same external dimensions as the existing bearings , the length of the rolling elements can be appropriately increased, thereby increasing the radial load capacity of the bearing.

4. The main structure of the inner ring is integral, with no rib design, which simplifies the installation process of the bearing.

5. The new pulley bearing with any of the above-mentioned detachable ribs can reliably withstand bidirectional axial force when used in the arrangement of a single pulley or a block of pulleys.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is a schematic diagram of a single pulley layout of the background technology of the present invention;

Fig. 2 is a schematic diagram of the layout of the pulley block in the background technology of the present invention;

Fig. 3 is the internal structure and peripheral structure of a single pulley bearing of the background technology of the present invention;

Fig. 4 is the pulley block and its peripheral structure of the background technology of the present invention;

Fig. 5 is a schematic diagram of the installation method of the pulley bearing in the background technology of the present invention;

Fig. 6 is a novel pulley bearing (type A) and a schematic diagram of its surrounding structure in an embodiment of the present invention;

Fig. 7 is a schematic diagram of an installation method of a new pulley bearing according to an embodiment of the present invention;

Fig. 8 is a structural schematic diagram of two new type pulley bearings (type A) arranged in the same direction according to an embodiment of the present invention;

Fig. 9 is a structural schematic diagram of two new type pulley bearings (type A) facing each other according to an embodiment of the present invention;

Fig. 10 is a schematic diagram of a novel pulley bearing (Type B) and its surrounding structures in an embodiment of the present invention;

Fig. 11 is a schematic diagram of a new pulley bearing (Type C) and its surrounding structures in an embodiment of the present invention.

Explanation of reference numbers:

100. New pulley bearing, 110. Inner ring, 111. Inner ring main body, 111-a. Rib installation notch, 112. First rib, 113. Second rib, 113-a. Installation gap, 114. Seal groove, 120. Outer ring, 121. Middle rib, 130. Rolling body;

200. pulley assembly, 210. wheel body;

300. pulley assembly, 310. pulley shaft.

Detailed ways

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

In order to keep the drawings concise, each drawing only schematically shows the parts related to the invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

It should also be further understood that the term "and/or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

In this article, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

As a specific embodiment, as shown in FIGS. 6 to 11 , this embodiment is a new pulley bearing 100 . For the structure and installation method of the existing pulley bearing, refer to the background art and FIGS. 1 to 5 . In this technical solution, the new pulley bearing 100 includes an inner ring 110 and an outer ring 120 located on the same center line. The inner ring 110 and the outer ring 120 are provided with a gap, and a number of rolling elements 130 are installed between them. The inner ring 110 It includes an inner ring main body 111 , a first rib 112 and a second rib 113 , and the first rib 112 and the second rib 113 are respectively located at two ends of the inner ring main body 111 . A plurality of fixed ribs 121 are arranged inside the outer ring 120 to isolate the adjacent rolling elements 130 . The first rib 112 and/or the second rib 113 are detachably connected to the inner ring main body 111 . In other words, the first rib 112 is detachably connected to the inner ring main body 111 , and the second rib 113 is integrated with the inner ring main body 111 ; or, the second rib 113 is detachably connected to the inner ring main body 111 1. The first rib 112 and the inner ring main body 111 are of an integrated structure; or, the first rib 112 and the inner ring main body 111 are detachably connected, and the second rib 113 and the inner ring main body 111 are also detachable connect.

Further preferably, the inner ring main body 111 is a one-piece non-split structure. In a preferred embodiment, the first rib 112 and/or the second rib 113 is provided with a sealing groove 114 on the side facing the outer ring 120, and the sealing groove 114 is used for installing a sealing lock up. In other words, the sealing groove 114 can be defined on the first rib 112 or the second rib 113 , or on both the first rib 112 and the second rib 113 .

Further preferably, as shown in FIG. 6 to FIG. 11 , the inner ring main body 111 has no middle rib structure, the inner ring main body 111 and the first rib 112 are integrally structured, and the second rib is integrated with the second rib. The side 113 can be detachably connected, and the second rib 113 is an annular structure. It should be noted that in this embodiment, the second rib 113 is only schematically used as a detachable rib. As a detachable sidewall.

The detachable ribs include at least the following three specific technical solutions:

Solution 1: As shown in FIG. 6 to FIG. 9 , one end of the inner ring main body 111 close to the outer ring 120 is in the shape of a step, forming a rib installation notch 111 -a. The diameter of the inner hole of the second rib 113 is equal to the diameter of the stepped surface of the inner ring 110 . The inner hole of the second rib 113 is matched with the stepped surface of the inner ring 110 , and the second rib 113 axially abuts against the end surface of the rib installation notch 111 - a . It should be noted that, as shown in FIG. 6 , the stepped surface of the inner ring 110 refers to the cylindrical surface of the flange mounting notch 111 - a , which is coaxial with the raceway surface of the inner ring 110 . That is, the rib installation notch 111 - a is radially connected to the inner hole surface of the second rib 113 . The end face of the rib installation notch 111-a refers to the side of the rib installation notch 111-a, the surface whose normal direction is consistent with the axial direction of the inner ring 110, that is, the rib installation notch 111-a is axially close to the second rib 113 end faces. Wherein, the second rib 113 is connected with the rib stepped surface of the inner ring main body 111 by interference fit, or screw connection, or screw connection, or snap connection, or glue connection, or any two connection methods above. common connection. For the convenience of subsequent analysis, the novel pulley bearing 100 described in Scheme 1 is defined as the novel pulley bearing 100 with an A-type detachable rib.

Solution 2: As shown in Figure 10, the side of the second rib 113 close to the inner ring main body 111 and the bearing rotation axis is an installation gap 113-a, and the diameter of the inner hole of the second rib 113 is the same as that of the The bore diameters of the inner ring 110 are equal. Preferably, the diameter of the stepped surface of the inner ring main body 111 is consistent with the diameter of the inner hole of the installation notch 113 - a of the second rib 113 . The inner hole of the installation notch 113 - a fits and connects with the stepped surface of the inner ring 110 , and the end surface of the installation notch 113 - a axially abuts against the end surface of the inner ring 110 . The notched inner hole of the second rib 113 and the stepped surface of the inner ring 110 can be connected by interference fit, screw connection, thread connection, snap connection, glue connection, or any two of the above. Connections are common connections. For the convenience of subsequent analysis, the novel pulley bearing 100 described in Scheme 2 is defined as a novel pulley bearing 100 with a B-type detachable rib.

Solution 3: As shown in Figure 11, the side of the second rib 113 close to the inner ring main body 111 and the bearing rotation axis is an installation gap 113-a, and the diameter of the inner hole of the second rib 113 is the same as that of the The diameter of the inner hole of the inner ring 110 is equal, and the diameter of the inner hole of the installation notch 113 - a is equal to the diameter of the raceway surface of the inner ring 110 . The inner hole of the installation notch 113 - a is matched with the raceway surface of the inner ring 110 , and the end surface of the installation notch 113 - a is axially against the end surface of the inner ring 110 . The second rib 113 is connected to the raceway surface of the inner ring 110 through an interference fit through the inner hole of the notch, or screw connection, or screw connection, or lock connection, or glue connection, or any two connection methods above. . For the convenience of subsequent analysis, the novel pulley bearing 100 described in Scheme 3 is defined as the novel pulley bearing 100 with C-shaped detachable ribs.

In summary, the technical solution further discloses three specific structures and connection methods of the detachable ribs. The second rib 113 of the above-mentioned novel pulley bearing 100 can be disassembled. When the rib receives the axial force from the bearing rolling element 130, the disassembled rib has no ability to bear the axial force. , retaining ring or adjacent bearing inner ring 110 supports the detachable rib to support the axial force. The connection method ensures that when the new pulley bearing 100 involved in the technical solution is supplied as a component, it becomes an integral bearing during packaging, transportation, and installation of the bearing and surrounding structures. The novel pulley bearing 100 involved in this technical solution, as an integral two-way positioning bearing, can be used for the support of a single pulley, and can also be used for the support of a block of pulleys.

Specifically, when the new pulley bearing 100 involved in this technical solution is used to support a single pulley, when the pulley bears an axial force, the axial force is transmitted to the bearing outer ring 120 through the pulley, and then the center of the outer ring 120 The rib 121 is transmitted to one of the rolling elements 130, and then the rolling element 130 transmits the axial force to the fixed rib or the detachable rib, and the outer end faces of the fixed rib and the detachable rib are formed by The shaft shoulder or retaining ring is axially supported, and the axial force is directly transmitted to the shoulders or retaining rings on both sides through the rib.

Further, when the new pulley bearing 100 involved in the technical solution is used to support the arrangement of the pulley block, the above-mentioned second rib 113 can reliably support bidirectional axial loads.

Specifically, when the new type of pulley bearing 100 involved in this technical solution is used to support the arrangement of pulley blocks, take the A-type detachable rib described in Solution 1 as an example, when the detachable ribs are arranged in the same direction , that is, the fixed rib and the detachable rib of the adjacent bearing are mutually axially supported. The axial force received by the pulley is transmitted to the outer ring 120 of the bearing through the pulley, and then transmitted to one row of rolling elements 130 by the middle rib 121 of the outer ring 120, and then the axial force is transmitted to the fixed rib by the rolling elements 130 Or detachable ribs. The axial force on the fixed rib is supported by the shaft shoulder or the washer, or supported by the inner ring 110 of the adjacent pulley bearing, and finally transmitted to the shaft shoulder or the washer. The axial force on the detachable rib is supported by the shaft shoulder or the washer, or supported by the fixed rib of the adjacent pulley bearing, and finally transmitted to the shaft shoulder or the washer through the inner ring 110 of the adjacent bearing.

Further, when the new pulley bearing 100 involved in this technical solution is used to support the arrangement of pulley blocks, take the A-type detachable rib as an example, when the detachable ribs are arranged in the same direction, that is, adjacent pulleys The fixed ribs of the bearings are mutually axially supported, or the detachable ribs of adjacent pulley bearings are mutually axially supported. The axial force received by the pulley is transmitted to the bearing outer ring 120 through the pulley, and then transmitted to one row of rolling elements 130 by the middle rib 121 of the outer ring 120, and then the rolling elements 130 transmit the axial force to the fixed rib or detachable Divide the sidewall. The axial force on the fixed rib is supported by the shaft shoulder or the washer, or the fixed rib of the adjacent pulley bearing, and finally transmitted to the shaft shoulder or the washer through the inner ring 110 of the adjacent pulley bearing. The axial force received by the detachable rib is transmitted to the detachable rib of the adjacent pulley bearing, and then supported by the end face of the installation notch 111-a of the inner ring rib of the adjacent pulley bearing, and transmitted to the adjacent bearing The inner ring body 111 is structurally, ultimately passed through the inner ring 110 of the adjacent sheave bearing to the shoulder or washer.

And then when the novel pulley bearing 100 involved in the present technical solution is used for the support of the pulley block arrangement, the novel pulley bearing 100 with the B and C-type detachable ribs and the novel pulley bearing with the A-type detachable ribs 100 is similar and will not be repeated here. The new type pulley bearing 100 with A, B and C detachable ribs can reliably support bidirectional axial loads when the detachable ribs are arranged in the same direction or facing each other. When the detachable rib receives the axial force transmitted from the pulley, the middle rib 121 of the outer ring 120, and the rolling element 130, it can be axially supported by the shaft shoulder, the retaining ring or the inner ring of the adjacent pulley bearing.

As another embodiment of the present invention, it is an installation method of a new pulley bearing 100, which is used to install the new pulley bearing 100 described in any of the above embodiments, including the following steps:

Step 1: Install several rolling elements 130 into the outer ring 120, and several rolling elements 130 are arranged in multiple rows separated by the middle rib 121;

Step 2: Install the inner ring main body 111 into the outer ring 120. When the inner ring main body 111 and the first rib 112 are integrated, the inner ring main body 111 is formed by the first The rib 112 is loaded into the outer ring 120 towards the direction of the second rib 113;

Step 3: install the second rib 113 on the side of the inner ring main body 111 away from the first rib 112;

Step 4: install the sealing rings on the first rib 112 and the second rib 113 respectively.

As another embodiment of the present invention, it is a pulley assembly 200, which includes a wheel body 210 and a snap ring installed in the groove of the pulley bearing outer ring 120, and also includes the new pulley bearing 100 described in any of the above-mentioned embodiments. The structure of the novel pulley bearing 100 is similar to that of the above embodiments, and will not be repeated here.

As another embodiment of the present invention, it is a pulley assembly 300, including a pulley shaft 310, an axial retaining ring, and the pulley assembly 200 described in the previous embodiment.

Specifically, the pulley assembly 200, the pulley shaft 310 and the retaining ring are located on the same centerline, and the plurality of pulley assemblies 200 are rotatably fixed on the pulley shaft 310 through the new pulley bearing 100, and the new pulley bearing 100 Installed between the retaining rings or between the retaining ring and the shaft shoulder. The second ribs 113 of different novel pulley bearings 100 are all arranged in the same direction, or the second ribs 113 of two adjacent novel pulley bearings 100 are arranged facing each other. The force situation of the new type pulley bearing 100 with A, B and C detachable ribs in the pulley assembly 300 arranged in the same direction or opposite to the detachable ribs is similar to that of the above embodiment, and is not described here. Let me repeat.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims

A new type of pulley bearing, including an inner ring and an outer ring located on the same center line, the inner ring and the outer ring are provided with a gap, and a number of rolling elements are installed between them, the inner ring includes an inner ring main body, a first rib and the second rib, the first rib and the second rib are respectively located at both ends of the inner ring main body; a number of fixed middle ribs are arranged on the inner side of the outer ring to isolate the adjacent rolling elements , characterized in that,

The first rib and/or the second rib are detachably connected to the inner ring main body.
A kind of novel pulley bearing according to claim 1, is characterized in that,

The main body of the inner ring is a one-piece non-split structure.
A kind of novel pulley bearing according to claim 2, is characterized in that,

The inner ring has no rib structure, the main body of the inner ring is integrated with the first rib, and can be detachably connected with the second rib, and the second rib is circular structure.
A kind of novel pulley bearing according to claim 3, is characterized in that,

One end of the main body of the inner ring is stepped on the side close to the outer ring, forming a rib installation spigot, and the diameter of the inner hole of the second rib is equal to the diameter of the stepped surface of the inner ring;

The inner hole of the second rib is mated with the stepped surface of the inner ring, and the second rib axially abuts against the end face of the rib installation spigot;

The second rib and the stepped surface of the inner ring body are connected by interference fit, or screw connection, or thread connection, or lock connection, or glue connection, or any two connection methods above.
A kind of novel pulley bearing according to claim 3, is characterized in that,

The side of the second rib near the main body of the inner ring and the axis of rotation of the bearing is a mounting gap, the diameter of the inner hole of the second rib is equal to the diameter of the inner hole of the inner ring, and the diameter of the inner hole of the main body of the inner ring is The diameter of the step surface is consistent with the diameter of the inner hole of the installation notch of the second rib;

The inner hole of the installation notch is mated with the stepped surface of the inner ring, and the end face of the installation notch axially abuts against the end face of the inner ring;

The notched inner hole of the second rib and the stepped surface of the inner ring can be connected by interference fit, screw connection, thread connection, snap connection, glue connection, or any two connection methods above common connection.
A kind of novel pulley bearing according to claim 3, is characterized in that,

The side of the second rib close to the main body of the inner ring and the axis of rotation of the bearing is an installation notch, the diameter of the inner hole of the second rib is equal to the diameter of the inner hole of the inner ring, and the inner diameter of the installation notch The diameter of the hole is equal to the diameter of the raceway surface of the inner ring;

The inner hole of the installation notch is mated with the raceway surface of the inner ring, and the end face of the installation notch axially abuts against the end face of the inner ring;

The second rib is connected with the raceway surface of the inner ring through an interference fit through the inner hole of the notch, or screw connection, or thread connection, or lock connection, or glue connection, or any two connection methods above.
A novel pulley bearing according to any one of claims 1-6, characterized in that,

The side of the first rib and/or the second rib facing the outer ring is provided with a sealing groove, and the sealing groove is used for installing a sealing ring.
An installation method of a novel pulley bearing is characterized in that it is used to install the novel pulley bearing described in claim 7, comprising the following steps:

Step 1: Installing a plurality of rolling elements into the outer ring, and a plurality of rolling elements are arranged in multiple rows separated by middle ribs;

Step 2: Install the inner ring main body into the outer ring. When the inner ring main body and the first rib are integrated, the inner ring main body faces from the first rib to the The direction of the second rib is fitted into the outer ring;

Step 3: installing the second rib on the side of the inner ring body away from the first rib;

Step 4: install the sealing rings on the first rib and the second rib respectively.
A pulley assembly, including a wheel body and a snap ring installed in the groove of the outer ring of the pulley bearing, characterized in that it also includes the new pulley bearing described in any one of claims 1-6.
A pulley assembly, including a pulley shaft and an axial retaining ring, is characterized in that,

Also comprising the pulley assembly of claim 9,

The pulley assembly, the pulley shaft and the retaining ring are located on the same center line, and the plurality of pulley assemblies are rotatably fixed on the pulley shaft through the new pulley bearings, and the new pulley bearings are installed between the retaining rings or Between the retaining ring and the shaft shoulder;

The second ribs of different new type pulley bearings are all arranged towards the same direction, or the second ribs of two adjacent new type pulley bearings are arranged facing each other.