Crossed roller bearing

Abstract

The utility model provides a crossed roller bearing, which relates to the technical field of roller bearings, and comprises a main body mechanism, a protection mechanism is arranged on the outer surface wall of the main body mechanism, the protection mechanism comprises two protection plates, one side of the outer wall of each protection plate is fixedly connected with an embedded block, one side of the outer wall of each protection plate is fixedly connected with a rotating plate, and the rotating plates are fixedly connected with the embedded blocks. The bottoms of the two rotating plates are each fixedly connected with a set of movable rods. According to the utility model, under the mutual matching of the main body mechanism and the protection mechanism, the efficient dynamic protection of the bearing is realized, the sealing performance of the plurality of sealing rings can be continuously maintained even in a severe environment or under the condition of long-time use, dust, moisture, impurities and the like are effectively prevented from entering the bearing, and the service life of the bearing is prolonged. And the cleaning and lubrication between the roller and the raceway in the bearing are ensured, so that the service life of the bearing is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of roller bearings, in particular to a cross roller bearing. Background Art

[0002] A bearing is a component used to support a shaft. Its main function is to reduce friction between the shaft and the supporting structure and to bear radial and axial loads on the shaft. Its basic structure includes an inner ring, an outer ring, rolling elements and a cage.

[0003] In some application scenarios, ordinary bearings cannot meet the requirements of high precision, high rigidity and high load capacity. The rollers of the crossed roller bearing are arranged crosswise in the raceways of the inner and outer rings, which enables it to withstand large loads in both radial and axial directions. In addition, it has high rotational accuracy and can provide stable support in a compact structure.

[0004] However, existing cross roller bearings have the following shortcomings:

[0005] In the prior art, a sealing ring is often provided between the inner and outer rings of a crossed roller bearing for sealing protection. However, in some harsh operating environments or after long-term use, the sealing ring will age, wear or deform, allowing dust, moisture, impurities, etc. to enter the interior of the bearing, causing wear and corrosion between the rollers and the raceway, resulting in reduced bearing accuracy, increased friction, and severe heat generation.

[0006] Therefore, we propose a cross roller bearing to solve the above problems. Utility Model Content

[0007] The purpose of the present utility model is to provide a cross roller bearing, in which two protective plates, two embedded blocks and side protective plates together provide a solid physical barrier for the bearing, effectively isolating it from the external environment. Through the sliding cooperation mechanism of the guide rail and a set of rollers, the two protective plates and the side protective rings can move flexibly with the rotation of the bearing to solve the problems raised by the above-mentioned background technology.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a cross roller bearing, comprising a main body, wherein the outer wall of the main body is provided with a protective mechanism;

[0009] The protective mechanism includes two protective plates, one side of the outer wall of the two protective plates is fixedly connected with an embedded block, one side of the outer wall of the two protective plates is fixedly connected with a rotating plate, the bottom of the two rotating plates is fixedly connected with a group of movable rods, the outer walls of the two groups of movable rods are movably sleeved with rollers, and the outer walls of the two groups of rollers are movably contacted with annular guide rails, and the outer walls of the two annular guide rails are fixedly connected with side protective rings, the outer walls of the side protective rings are opened with two groups of mounting holes, and the inner walls of the two groups of mounting holes are movably inserted with mounting bolts.

[0010] Preferably, the main body mechanism includes an inner ring, the outer wall of the inner ring is provided with a group of partitions, and a cross rotor is movably contacted between the outer walls of the group of partitions.

[0011] Preferably, a group of the cross rotors has two outer rings in movable contact with each other between the outer walls, two first sealing rings are movably inserted between the inner ring and the outer walls of the two outer rings, and four second sealing rings are movably inserted between the outer walls of the two outer rings.

[0012] Preferably, the outer surfaces of the two outer rings are each provided with a group of slots, and a card block is movably inserted between the inner surfaces of the two groups of slots, and a limiting groove is provided on the top of one group of card blocks.

[0013] Preferably, a group of limiting grooves are provided with limiting rods movably inserted into the inner surface walls thereof, and a pull ring is fixedly connected between the tops of the group of limiting rods.

[0014] Preferably, three reset springs are fixedly connected to the bottom of the pull ring, two slots are provided on the outer wall of the inner ring, and a group of threaded grooves are provided on one side of the outer walls of the two outer rings.

[0015] Preferably, the outer surfaces of the two protective plates are fixedly inserted into the interiors of the two slots, and the inner surfaces of the two groups of threaded grooves are threadedly connected to the outer surfaces of the two groups of mounting bolts.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. In the present invention, through the mutual cooperation of the main body mechanism and the protective mechanism, the two protective plates, the two embedded blocks and the side protective plates jointly provide a solid physical barrier for the bearing, effectively isolating it from the external environment. Through the sliding cooperation mechanism of the guide rail and a set of rollers, the two protective plates and the side protective rings can flexibly move with the rotation of the bearing. In this way, efficient dynamic protection of the bearing is achieved, ensuring that even in harsh environments or long-term use conditions, multiple sealing rings can continue to maintain their sealing performance, effectively preventing dust, moisture, impurities, etc. from entering the interior of the bearing, ensuring the cleanliness and lubrication between the rollers and raceways inside the bearing, thereby significantly improving the service life of the bearing.

[0018] 2. In the present invention, the interaction of the components of the protection mechanism enables quick disassembly and assembly of the two outer rings, making the maintenance and replacement of the bearings simpler and more efficient, thereby effectively reducing downtime and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model provides a main structural stereogram of a cross roller bearing;

[0020] Figure 2 The utility model proposes a three-dimensional exploded diagram of the main mechanism of a cross roller bearing;

[0021] Figure 3 The utility model proposes a three-dimensional exploded diagram of the main structure of a cross roller bearing;

[0022] Figure 4 The utility model proposes a three-dimensional exploded view of the protective structure of the cleaning mechanism in the cross roller bearing;

[0023] Figure 5 This is an enlarged view of the structure of a protective mechanism A in a cross roller bearing proposed in the utility model;

[0024] Figure 6 The present invention provides a three-dimensional exploded view of the partial structure of a protective mechanism in a cross roller bearing.

[0025] Legend: 1. Main body; 101. Inner ring; 102. Separator; 103. Cross rotor; 104. Outer ring; 105. First sealing ring; 106. Second sealing ring; 107. Slot; 108. Block; 109. Limiting slot; 110. Limiting rod; 111. Pull ring; 112. Return spring; 113. Slot; 114. Threaded groove; 2. Protective mechanism; 201. Protective plate; 202. Embedded block; 203. Rotating plate; 204. Movable rod; 205. Roller; 206. Annular guide rail; 207. Side protective ring; 208. Mounting hole; 209. Mounting bolt. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] See also Figures 1-6 The utility model provides a cross roller bearing, comprising a main body 1, and a protective mechanism 2 is provided on the outer wall of the main body 1;

[0029] The protective mechanism 2 includes two protective plates 201, and one side of the outer wall of the two protective plates 201 is fixedly connected to an embedded block 202, and one side of the outer wall of the two protective plates 201 is fixedly connected to a rotating plate 203, and the bottom of the two rotating plates 203 is fixedly connected to a group of movable rods 204, and the outer walls of the two groups of movable rods 204 are movably provided with rollers 205, and the outer walls of the two groups of rollers 205 are movably contacted with an annular guide rail 206, and one side of the outer wall of the two annular guide rails 206 is fixedly connected to a side protective ring 207, and the outer wall of the side protective ring 207 is provided with two groups of mounting holes 208, and the inner wall of the two groups of mounting holes 208 is movably inserted with mounting bolts 209.

[0030] like Figure 4 、 Figure 5 ,and Figure 6 As shown, the main mechanism 1 includes an inner ring 101, a group of partitions 102 are provided on the outer wall of the inner ring 101, and a cross rotor 103 is movably contacted between the outer walls of the group of partitions 102. By presetting the above components, the cross rotor 103 can provide stable transmission and support between the inner ring 101 and the two outer rings 104, and the group of partitions 102 can effectively separate and position the relative positions of the inner ring 101 and the outer ring 104, thereby ensuring the stability of the overall structure and the operation accuracy.

[0031] like Figure 4 、 Figure 5 ,and Figure 6As shown, there are two outer rings 104 in movable contact between the outer walls of a set of cross rotors 103, two first sealing rings 105 are movably inserted between the inner ring 101 and the outer walls of the two outer rings 104, and four second sealing rings 106 are movably inserted between the outer walls of the two outer rings 104. By presetting the above components, the two first sealing rings 105 and the four second sealing rings 106 can effectively prevent contaminants from entering the interior of the bearing, thereby ensuring the normal operation of the bearing and extending its service life.

[0032] like Figure 4 、 Figure 5 ,and Figure 6 As shown, the outer walls of the two outer rings 104 are each provided with a group of slots 107, and between the inner walls of the two groups of slots 107 a card block 108 is movably inserted, and the top of a group of card blocks 108 is provided with a limiting groove 109. By presetting the above components, after the two groups of card blocks 108 are accurately inserted into the corresponding slots 107, the positions of the two outer rings 104 can be initially stabilized, which provides convenience for subsequent reinforcement operations.

[0033] like Figure 4 、 Figure 5 ,and Figure 6 As shown, a set of limit rods 110 are movably inserted into the inner surface walls of the limit grooves 109, and a pull ring 111 is fixedly connected between the tops of the limit rods 110. By presetting the above components, a set of limit rods 110 are accurately inserted into the corresponding limit grooves 109, so that the two sets of blocks 108 are firmly embedded in the two outer rings 104, realizing a stable connection between the two outer rings 104, thereby ensuring the integrity and operational stability of the entire structure.

[0034] like Figure 4 、 Figure 5 ,and Figure 6 As shown, three return springs 112 are fixedly connected to the bottom of the pull ring 111, two slots 113 are provided on the outer wall of the inner ring 101, and a group of threaded grooves 114 are provided on one side of the outer wall of the two outer rings 104. By presetting the above components, pulling the pull ring 111 can quickly disengage a group of limit rods 110 from the corresponding limit grooves 109. At the same time, a group of return springs 112 provides the necessary elastic return force for the pull ring 111, effectively preventing accidental movement of the pull ring 111 when no disassembly operation is performed.

[0035] like Figure 1 As shown, the outer walls of the two protective plates 201 are fixedly inserted into the two slots 113, and the inner walls of the two sets of threaded grooves 114 are threadedly connected to the outer walls of the two sets of mounting bolts 209. By presetting the above components, the two protective plates 201 can provide excellent physical protection for the top and bottom of the outer bearing, thereby effectively resisting external impact and damage and ensuring the stable operation of the bearing.

[0036] The method of use and working principle of this device: When in use, first, the two protective plates 201 provide excellent physical protection for the top and bottom of the outer bearing, effectively preventing external impurities from wearing the two first sealing rings 105, ensuring the stable operation of the bearing. Then, insert the two sets of mounting bolts 209 into the corresponding threaded grooves 114, and firmly fix the side protective plates 207 between the outer walls of the two outer rings 104, providing good side protection for the bearing, preventing external moisture from penetrating and invading the four second sealing rings 106, thereby protecting the inside of the bearing from corrosion. When the inner ring 101 of the bearing and the two outer rings 104 need to rotate, the annular guide rail 206 is used to slide with the two sets of rollers 205. , so that the two protective plates 201 and the side protective rings 207 can rotate smoothly relative to each other, ensuring the normal operation of the bearing. At this time, the two protective plates 201 and the side protective rings 207 can move flexibly with the rotation of the bearing without affecting the performance of the bearing. When the two outer rings 104 need to be disassembled for bearing maintenance, first pull the pull ring 111. The pull ring 111 drives a group of limit rods 110 to move upward, so that the limit rods 110 can smoothly disengage from the corresponding limit grooves 109, thereby releasing the fixed state of the block 108. Subsequently, a group of blocks 108 are removed from the inside of the two outer rings 104 to release the fixed connection between the two outer rings 104, which facilitates the subsequent disassembly and maintenance of the bearing.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A crossed roller bearing, characterized in that: It comprises a main body mechanism (1), wherein an outer wall of the main body mechanism (1) is provided with a protective mechanism (2); The protection mechanism (2) comprises two protection plates (201), one side of the outer wall of each of the two protection plates (201) is fixedly connected with an embedded block (202), one side of the outer wall of each of the two protection plates (201) is fixedly connected with a rotating plate (203), the bottom of each of the two rotating plates (203) is fixedly connected with a group of movable rods (204), the outer walls of each of the two groups of movable rods (204) are movably sleeved with rollers (205), an annular guide rail (206) is movably contacted between the outer walls of each of the two groups of rollers (205), a side protection ring (207) is fixedly connected between the outer walls of each of the two annular guide rails (206), the outer wall of each of the side protection rings (207) is provided with two groups of mounting holes (208), and the inner walls of each of the two groups of mounting holes (208) are movably inserted with mounting bolts (209).

2. A cross roller bearing according to claim 1, characterized in that: The main body mechanism (1) includes an inner ring (101), an outer wall of the inner ring (101) is provided with a group of partitions (102), and a cross rotor (103) is movably contacted between the outer walls of the group of partitions (102).

3. A crossed roller bearing according to claim 2, characterized in that: Two outer rings (104) are movably connected between the outer walls of a group of cross rotors (103), two first sealing rings (105) are movably inserted between the inner ring (101) and the outer walls of the two outer rings (104), and four second sealing rings (106) are movably inserted between the outer walls of the two outer rings (104).

4. A cross roller bearing according to claim 3, characterized in that: The outer surfaces of the two outer rings (104) are each provided with a group of slots (107), and a clamping block (108) is movably inserted between the inner surfaces of the two groups of slots (107), and a limiting groove (109) is provided on the top of one group of the clamping blocks (108).

5. The cross roller bearing according to claim 4, characterized in that: A group of inner surface walls of the limiting grooves (109) are movably inserted with limiting rods (110), and a pull ring (111) is fixedly connected between the tops of the group of limiting rods (110).

6. The cross roller bearing according to claim 5, characterized in that: Three return springs (112) are fixedly connected to the bottom of the pull ring (111), two slots (113) are provided on the outer wall of the inner ring (101), and a set of threaded grooves (114) are provided on one side of the outer wall of the two outer rings (104).

7. The cross roller bearing according to claim 6, characterized in that: The outer walls of the two protective plates (201) are fixedly inserted into the two slots (113), and the inner walls of the two groups of threaded grooves (114) are threadedly connected to the outer walls of the two groups of mounting bolts (209).

Images