All-metal linear bearing

Abstract

The utility model relates to an all-metal linear bearing which comprises a bearing sleeve, the bearing sleeve is divided into a first bearing outer ring and a second bearing outer ring, the first bearing outer ring and the second bearing outer ring are detachably connected, the left end and the right end of the first bearing outer ring and the left end and the right end of the second bearing outer ring are respectively provided with an annular groove, and the inner sides of the annular grooves are connected with retainers in a sliding mode. Balls are installed on the inner sides of the retainers, limiting grooves formed in the bearing sleeve are formed in the outer sides of the annular grooves, clamping springs are installed on the inner sides of the limiting grooves and can limit sliding of the retainers and position the retainers, and the four retainers are arranged, so that cost is saved, deformation of the retainers can be effectively prevented, and the use effect is good; the overall length of the retainer can be far smaller than that of the bearing sleeve, cost is saved, the balls are distributed in a three-point mode at the two ends and the middle relative to the bearing sleeve, the structure is reasonable, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of linear bearings, in particular to a full-metal linear bearing. Background Art

[0002] The utility model patent with application number: CN202121291298.8 discloses a self-lubricating extended linear bearing, including a bearing sleeve, a retainer is arranged inside the bearing sleeve, a placement frame is arranged on the outer surface of the retainer, a ball is arranged inside the placement frame, a sealing ring is arranged on the inner wall of the left end of the bearing sleeve, an oil filling port is symmetrically arranged at the end of the bearing sleeve opposite to the sealing ring, a first spring is arranged inside the oil filling port, a stopper is arranged on the top of the first spring, a second spring is arranged on the outer surface of the sealing ring, an oil guide pipe is arranged on the inner side of the placement frame, a connecting port is arranged on the inner side of the placement frame and at both ends of the oil guide pipe, a third spring is arranged at the top and bottom of the inner side of the connecting port, and a stopper is arranged on the outer side of the third spring near the oil guide pipe. The above technical solution is provided with a sealing ring, a first spring, a second spring, a stopper, an oil guide pipe, a connecting port, a third spring and a stopper. The first spring can clamp the sealing ring in the gap between the left end of the bearing sleeve and the retainer to keep the sealing ring from deforming. The stopper and the second spring can block the oil filling port to facilitate oil filling. The connecting port can connect the oil guide pipe with the placement frame through the third spring and the stopper to reflux the lubricating oil inside the placement frame. However, the axial direction of the extended linear bearing is longer, and only one cage is provided. When the load increases, the load at the center point of the cage will be greatly increased, which will cause the cage to deform, thereby causing the ball to fall off from the ball groove in the cage, affecting the bearing operation. Utility Model Content

[0003] The utility model aims to solve the problems existing in the prior art and provides a full metal linear bearing with multiple sets of retaining frames, which not only saves costs but also can prevent the retaining frames from deforming and has good use effect.

[0004] The utility model adopts a technical solution to solve its technical problems: this all-metal linear bearing comprises a bearing sleeve, the bearing sleeve is divided into a first bearing outer ring and a second bearing outer ring, the first bearing outer ring and the second bearing outer ring are detachably connected, both left and right ends of the first bearing outer ring and the left and right ends of the second bearing outer ring are provided with annular grooves, the inner sides of the annular grooves are slidably connected with retaining frames, the inner sides of the retaining frames are installed with balls, the outer sides of the annular grooves are provided with limiting grooves opened on the bearing sleeve, the inner sides of the limiting grooves are installed with retaining springs, the retaining springs can limit the sliding of the retaining frames and position the retaining frames, four groups of retaining frames are provided, which not only saves costs, but also can effectively prevent the retaining frames from being deformed, and has good use effect, the overall length of the retaining frames can be much smaller than the length of the bearing sleeve, saving costs, the balls are distributed in a three-point manner at both ends and the middle part relative to the bearing sleeve, the structure is reasonable, and the use effect is good.

[0005] For further improvement, the first bearing outer ring and the second bearing outer ring are provided with an installation groove at one end close to each other, a positioning strip is slidably connected to the inner side of the installation groove, and locking screws are slidably connected to the left and right ends of the positioning strip, and the locking screws are threadedly connected to the bearing sleeve, so that the first bearing outer ring and the second bearing outer ring are easy to disassemble and assemble.

[0006] For further improvement, the left end of the first bearing outer ring is fixedly connected with a connecting block, the left end of the connecting block is fixedly connected with a clamping block, and the right end of the second bearing outer ring is provided with a slide groove, the clamping block and the connecting block can be slidably connected to the inner side of the slide groove, the outer side of the slide groove is provided with a connecting groove opened on the second bearing outer ring, the connecting block can be slidably connected to the inner side of the connecting groove, the left end of the connecting groove is provided with a clamping groove opened on the second bearing outer ring, and the clamping block can be slidably connected to the inner side of the clamping groove, the clamping block and the connecting block are slid into the inner side of the slide groove, the first bearing outer ring is rotated, so that the connecting block slides into the inner side of the connecting groove, and the clamping block slides into the inner side of the clamping groove. At this time, the first bearing outer ring and the second bearing outer ring cannot move left and right, the positioning strip is placed into the inner side of the installation slot, and the locking screw is screwed into the bearing sleeve, so that the installation of the locking screw and the positioning strip is more convenient, and there is no need to control the left and right movement between the first bearing outer ring and the second bearing outer ring by hand.

[0007] As a further improvement, there are a plurality of connecting blocks which are evenly distributed along the circumference of the outer ring of the first bearing, so that the structure is more stable.

[0008] For further improvement, both left and right ends of the bearing sleeve are provided with dust covers, which can protect the bearing from dust, so that the bearing has a better use effect and a longer service life.

[0009] For further improvement, both left and right ends of the bearing sleeve are fixedly connected with threaded rings, and the dust cover is threadedly connected to the outside of the threaded ring, which is convenient for installation and replacement of the dust cover, thereby extending the service life of the bearing.

[0010] As a further improvement, the outer ring of the second bearing is fixedly connected with a flange, making the bearing installation more convenient.

[0011] The beneficial effects of the utility model are: four sets of retaining frames are provided, which not only saves costs, but also can effectively prevent the retaining frames from deformation and has good use effect. The overall length of the retaining frames can be much smaller than the length of the bearing sleeve, which saves costs. The balls are distributed in a three-point manner at the two ends and the middle part relative to the bearing sleeve, with a reasonable structure and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3This is a schematic diagram of the structure of the outer ring of the first bearing of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the outer ring of the first bearing of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the outer ring of the second bearing of the utility model;

[0017] Figure 6 It is a schematic structural diagram of the second bearing outer ring of the utility model.

[0018] Explanation of the accompanying drawings: 1. bearing sleeve; 11. first bearing outer ring; 111. connecting block; 112. clamping block; 12. second bearing outer ring; 121. slide groove; 122. connecting groove; 123. clamping groove; 124. flange; 13. ring groove; 131. limit groove; 14. retaining spring; 15. threaded ring; 151. dust cover; 16. mounting groove; 17. positioning strip; 171. locking screw; 2. retaining frame; 21. ball. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-6 The utility model is further described as follows:

[0020] like Figure 1-Figure 6 As shown: In this embodiment, an all-metal linear bearing includes a bearing sleeve 1, which is divided into a first bearing outer ring 11 and a second bearing outer ring 12. The first bearing outer ring 11 and the second bearing outer ring 12 are detachably connected. The first bearing outer ring 11 and the second bearing outer ring 12 are both provided with a mounting groove 16 at one end close to each other. A positioning strip 17 is slidably connected to the inner side of the mounting groove 16. The left and right ends of the positioning strip 17 are slidably connected with locking screws 171. The locking screws 171 are threadedly connected to the bearing sleeve 1. The left end of the first bearing outer ring 11 is fixedly connected with a connecting block 111, and the left end of the connecting block 111 is fixedly connected with a clamping block 112. The right end of the second bearing outer ring 12 is provided with a slide groove 121, and the clamping block 112 and the connecting block 111 can be slidably connected in the slide groove 121 On the other hand, a connecting groove 122 opened on the second bearing outer ring 12 is provided on the outer side of the slide groove 121, and the connecting block 111 can be slidably connected to the inner side of the connecting groove 122. A clamping groove 123 opened on the second bearing outer ring 12 is provided on the left end of the connecting groove 122, and the clamping block 112 can be slidably connected to the inner side of the clamping groove 123. An annular groove 13 is opened on the left and right ends of the first bearing outer ring 11 and the left and right ends of the second bearing outer ring 12. A retaining frame 2 is slidably connected to the inner side of the annular groove 13, and a ball 21 is installed on the inner side of the retaining frame 2. A limiting groove 131 opened on the bearing sleeve 1 is provided on the outer side of the annular groove 13, and a retaining spring 14 for positioning the retaining frame 2 is installed on the inner side of the limiting groove 131. A threaded ring 15 is fixedly connected to the left and right ends of the bearing sleeve 1, and the dust cover 151 is threadedly connected to the outer side of the threaded ring 15.

[0021] When the utility model is in use: the retaining frame 2 and the ball 21 are installed to the inner side of the annular groove 13, the retaining spring 14 is installed to the inner side of the limiting groove 131, the retaining frame 2 is positioned by the retaining spring 14, the clamping block 112 and the connecting block 111 are slid into the inner side of the sliding groove 121, the first bearing outer ring 11 is rotated so that the connecting block 111 slides into the inner side of the connecting groove 122, and the clamping block 112 slides into the inner side of the clamping groove 123. At this time, the first bearing outer ring 11 and the second bearing outer ring 12 cannot move left and right, the positioning strip 17 is placed into the inner side of the installation groove 16, the locking screw 171 is screwed into the bearing sleeve 1, and the dust cover 151 is threadedly connected to the outer side of the threaded ring 15, and the installation is completed.

[0022] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An all-metal linear bearing, comprising a bearing sleeve (1), characterized in that: The bearing sleeve (1) is divided into a first bearing outer ring (11) and a second bearing outer ring (12). The first bearing outer ring (11) and the second bearing outer ring (12) are detachably connected. Both left and right ends of the first bearing outer ring (11) and left and right ends of the second bearing outer ring (12) are provided with annular grooves (13). A retaining frame (2) is slidably connected to the inner side of the annular groove (13). A ball (21) is installed on the inner side of the retaining frame (2). A limiting groove (131) opened on the bearing sleeve (1) is provided on the outer side of the annular groove (13). A retaining ring (14) is installed on the inner side of the limiting groove (131).

2. The all-metal linear bearing according to claim 1, characterized in that: The first bearing outer ring (11) and the second bearing outer ring (12) are provided with a mounting groove (16) at one end close to each other, a positioning strip (17) is slidably connected to the inside of the mounting groove (16), and locking screws (171) are slidably connected to the left and right ends of the positioning strip (17), and the locking screws (171) are threadedly connected to the bearing sleeve (1).

3. The all-metal linear bearing according to claim 2, characterized in that: The left end of the first bearing outer ring (11) is fixedly connected with a connecting block (111), the left end of the connecting block (111) is fixedly connected with a clamping block (112), the right end of the second bearing outer ring (12) is provided with a slide groove (121), the clamping block (112) and the connecting block (111) are slidably connected to the inner side of the slide groove (121), the outer side of the slide groove (121) is provided with a connecting groove (122) opened on the second bearing outer ring (12), the connecting block (111) is slidably connected to the inner side of the connecting groove (122), the left end of the connecting groove (122) is provided with a clamping groove (123) opened on the second bearing outer ring (12), and the clamping block (112) is slidably connected to the inner side of the clamping groove (123).

4. The all-metal linear bearing according to claim 3, characterized in that: There are a plurality of connection blocks (111).

5. The all-metal linear bearing according to claim 1, characterized in that: Dust covers (151) are provided at both left and right ends of the bearing sleeve (1).

6. The all-metal linear bearing according to claim 5, characterized in that: The left and right ends of the bearing sleeve (1) are fixedly connected with threaded rings (15), and the dust cover (151) is threadedly connected to the outside of the threaded ring (15).

7. The all-metal linear bearing according to claim 1, characterized in that: The second bearing outer ring (12) is fixedly connected to a flange (124).

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