Axial positioning structure of needle bearing

Abstract

The utility model discloses a needle bearing axial positioning structure which comprises a fixing disc, a positioning cylinder is integrally formed on the front surface of the fixing disc, a clamping ring is arranged on the rear portion of the fixing disc, a plurality of containing grooves are formed in the rear surface of the clamping ring, a plurality of fixing holes are formed in the front surface of the clamping ring and the front surface of the fixing disc, and the positioning cylinder is arranged on the front surface of the fixing disc. A plurality of threaded holes are formed in the rear surface of the fixing disc, bolts are arranged in the containing grooves, the bolts penetrate through the fixing holes in the inner sides to be in threaded connection with the threaded holes, anti-loosening mechanisms are arranged in the containing grooves, needle bearing shafts are arranged in the positioning cylinders, needle bearings are placed in the positioning cylinders, and the needle bearings are fixed through the needle bearing shafts. Then the bolt is inserted into the inner side fixing hole, the bolt and the threaded hole are in threaded connection through a wrench, the needle bearing is clamped by the clamping ring and positioned, then the connecting block is held, the limiting strip is inserted into the limiting groove, the baffle abuts against the bolt, and therefore the situation that due to vibration, the bolt rotates reversely and is loosened, and positioning fails is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning structures, in particular to an axial positioning structure for a needle roller bearing. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. These rollers are called needle rollers. Despite their small cross-section, the bearings have a high load-carrying capacity.

[0003] However, the needle roller bearing will have axial shaking during use, so an axial positioning mechanism is needed to fix it. The existing axial positioning mechanisms are fixed by screws or bolts. The needle roller bearing will vibrate during rotation, which may loosen the screws or bolts and cause positioning failure. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an axial positioning structure for a needle roller bearing, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a needle roller bearing axial positioning structure, including a fixed plate, a positioning cylinder is integrally formed on the front surface of the fixed plate, a clamping ring is provided at the rear of the fixed plate, a plurality of placement grooves are provided on the rear surface of the clamping ring, a plurality of fixing holes are provided on the front surface of the clamping ring and the front surface of the fixed plate, a plurality of threaded holes are provided on the rear surface of the fixed plate, a bolt is provided inside the placement groove, the bolt passes through the inner fixing hole and the threaded hole for threaded connection, an anti-loosening mechanism is provided inside the placement groove, and a needle roller bearing shaft is provided inside the positioning cylinder.

[0006] Preferably, the anti-loosening mechanism comprises a baffle, two limiting strips and a connecting block, the baffle and the connecting block are integrally formed, and a limiting groove is provided on the inner side wall of the placement groove.

[0007] Preferably, the limiting strip is located inside the limiting groove, a side of the limiting strip away from the limiting groove is fixedly connected to the connecting block, and a front surface of the baffle is in contact with a rear end of the bolt.

[0008] Preferably, a clamping mechanism is provided inside the connecting block, and the clamping mechanism includes two clamping blocks, two springs, two pull ropes and a dial plate. The connecting block is close to one side of the limit bar and a storage hole is opened in front of the limit bar.

[0009] Preferably, the spring is located inside the storage hole, and one end of the spring away from the limit strip is fixedly connected to the storage hole, the other end of the spring is fixedly connected to the clamping block, two clamping holes are opened inside the placement groove, and the rear surface of the shift plate is fixed with anti-slip grooves.

[0010] Preferably, a sliding groove is provided inside the baffle, and a side of the shift plate close to the limit bar and a side of the slide groove close to the limit bar are slidably connected, and two grooves are provided on the front surface of the shift plate, and an end of the clamping block close to the spring is fixedly connected to the front end of the pull rope, and the rear end of the pull rope passes through the connecting block and is fixedly connected to the inner rear surface of the groove.

[0011] Beneficial Effects

[0012] The utility model provides an axial positioning structure for a needle roller bearing. Compared with the prior art, it has the following beneficial effects:

[0013] 1. The axial positioning structure of the needle roller bearing is provided with an anti-loosening mechanism, the needle roller bearing is placed inside the positioning cylinder, and then the bolt is inserted into the inner fixing hole, and the bolt and the threaded hole are screwed together using a wrench, so that the clamping ring clamps the needle roller bearing to position the needle roller bearing, and then the connecting block is held, the limit bar is inserted into the limit groove, and the baffle plate holds the bolt to prevent vibration from causing the bolt to reverse and loosen, resulting in positioning failure.

[0014] 2. The axial positioning structure of the needle roller bearing is provided with a clamping mechanism. After the connecting block is inserted into the interior of the placement groove, the clamping block is clamped into the clamping hole, so that the connecting block and the baffle can be fixed inside the placement groove. If the needle roller bearing is replaced and inspected, the dial plate is moved, the dial plate pulls the pull rope, the pull rope pulls the clamping block, the clamping block moves out of the clamping hole, and the dial plate is continued to be moved to move the connecting block and the baffle out of the placement groove, so that the bolt can be loosened and then the clamp ring can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model from the side;

[0017] Figure 3 It is a side view structural schematic diagram of the clamping ring in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the anti-loosening mechanism in the utility model;

[0019] Figure 5 It is a cross-sectional structural schematic diagram of the anti-loosening mechanism in the utility model;

[0020] Figure 6Schematic side view structure of the connecting block and the baffle in the present utility model;

[0021] Figure 7 Schematic side view structure of the fixed disk and the clamping ring in the present utility model;

[0022] Figure 8 Schematic side view structure of the fixed disk in the present utility model.

[0023] In the figure: 1, fixed disk; 2, needle roller bearing; 3, clamping mechanism; 4, anti-loosening mechanism; 5, clamping ring; 6, placement groove; 7, anti-slip pattern; 8, limiting groove; 9, clamping hole; 10, limiting strip; 11, baffle; 12, dial; 13, connecting block; 14, groove; 15, clamping block; 16, pull rope; 17, storage hole; 18, spring; 19, positioning cylinder; 20, fixing hole; 21, sliding groove; 22, bolt; 23, threaded hole. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1-8 , the present utility model provides a technical solution: a needle roller bearing axial positioning structure, including a fixed disk 1, a positioning cylinder 19 is integrally formed on the front surface of the fixed disk 1, a clamping ring 5 is provided behind the fixed disk 1, a plurality of placement grooves 6 are opened on the rear surface of the clamping ring 5, a plurality of fixing holes 20 are opened on the front surface of the clamping ring 5 and the front surface of the fixed disk 1, a plurality of threaded holes 23 are opened on the rear surface of the fixed disk 1, a bolt 22 is provided inside the placement groove 6, the bolt 22 passes through the inner fixing hole 20 and is screwed with the threaded hole 23, an anti-loosening mechanism 4 is provided inside the placement groove 6, a needle roller bearing shaft 2 is provided inside the positioning cylinder 19, the anti-loosening mechanism 4 includes a baffle 11, two limiting strips 10 and a connecting block 13, the baffle 11 and the connecting block 13 are integrally formed, a limiting groove 8 is opened on the inner side wall of the placement groove 6, the limiting strip 10 is located inside the limiting groove 8, one side of the limiting strip 10 away from the limiting groove 8 is fixedly connected to the connecting block 13, the front surface of the baffle 11 is in contact with the rear end of the bolt 22, place the needle roller bearing 2 inside the positioning cylinder 19, then insert the bolt 22 into the inner fixing hole 20, and use a wrench to screw the bolt 22 with the threaded hole 23, so that the clamping ring 5 clamps the needle roller bearing 2 to position the needle roller bearing 2. After that, hold the connecting block 13 and insert the limiting strip 10 into the limiting groove 8, and the baffle 11 presses against the bolt 22, so as to prevent the bolt 22 from reversing and loosening due to vibration, resulting in positioning failure.

[0026] Preferably, a clamping mechanism 3 is provided inside the connecting block 13. The clamping mechanism 3 includes two clamping blocks 15, two springs 18, two pull ropes 16 and a dial plate 12. On one side of the connecting block 13 close to the limiting strip 10 and in front of the limiting strip 10, a receiving hole 17 is opened. The spring 18 is located inside the receiving hole 17, and one end of the spring 18 away from the limiting strip 10 is fixedly connected to the receiving hole 17. The other end of the spring 18 is fixedly connected to the clamping block 15. Two clamping holes 9 are opened inside the placing groove 6. Anti-slip lines 7 are fixed on the rear surface of the dial plate 12. A sliding groove 21 is opened inside the baffle 11. One side of the dial plate 12 close to the limiting strip 10 is slidably connected to one side of the inside of the sliding groove 21 close to the limiting strip 10. Two grooves 14 are opened on the front surface of the dial plate 12. One end of the clamping block 15 close to the spring 18 is fixedly connected to the front end of the pull rope 16. The rear end of the pull rope 16 passes through the connecting block 13 and is fixedly connected to the inner rear surface of the groove 14. After the connecting block 13 is inserted into the placing groove 6, the clamping block 15 is clamped into the clamping hole 9, so that the connecting block 13 and the baffle 11 can be fixed inside the placing groove 6. If the needle roller bearing 2 needs to be replaced or inspected, the dial plate 12 is toggled. The dial plate 12 pulls the pull rope 16, the pull rope 16 pulls the clamping block 15, and the clamping block 15 moves out of the clamping hole 9. Continuing to toggle the dial plate 12 to take out the connecting block 13 and the baffle 11 from the placing groove 6, the bolt 22 can be loosened, and then the clamping ring 5 can be removed.

[0027] During operation, the needle roller bearing 2 is placed inside the positioning cylinder 19. Then, the bolt 22 is inserted into the inner fixing hole 20, and a wrench is used to screw the bolt 22 and the threaded hole 23. In this way, the clamping ring 5 clamps the needle roller bearing 2 to position the needle roller bearing 2. After that, hold the connecting block 13 and insert the limiting strip 10 into the limiting groove 8. The baffle 11 abuts against the bolt 22, which prevents the bolt 22 from reversing and loosening due to vibration, resulting in positioning failure.

[0028] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0030] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Axial positioning structure of a needle roller bearing, including a fixed disk (1), characterized in that: A positioning cylinder (19) is integrally formed on the front surface of the fixed disk (1). A clamping ring (5) is provided behind the fixed disk (1). A plurality of placement grooves (6) are formed on the rear surface of the clamping ring (5). A plurality of fixing holes (20) are formed on the front surfaces of both the clamping ring (5) and the fixed disk (1). A plurality of threaded holes (23) are formed on the rear surface of the fixed disk (1). A bolt (22) is provided inside the placement groove (6). The bolt (22) passes through the inner fixing hole (20) and is screwed into the threaded hole (23). An anti-loosening mechanism (4) is provided inside the placement groove (6). A needle roller bearing shaft (2) is provided inside the positioning cylinder (19).

2. The axial positioning structure of the needle roller bearing according to claim 1, characterized in that: The anti-loosening mechanism (4) includes a baffle plate (11), two limiting strips (10) and a connecting block (13). The baffle plate (11) and the connecting block (13) are integrally formed. A limiting groove (8) is formed on the inner side wall of the placement groove (6).

3. The axial positioning structure of the needle roller bearing according to claim 2, characterized in that: The limiting strip (10) is located inside the limiting groove (8). One side of the limiting strip (10) away from the limiting groove (8) is fixedly connected to the connecting block (13). The front surface of the baffle plate (11) is in contact with the rear end of the bolt (22).

4. The axial positioning structure of the needle roller bearing according to claim 3, characterized in that: A clamping mechanism (3) is provided inside the connecting block (13). The clamping mechanism (3) includes two clamping blocks (15), two springs (18), two pulling ropes (16) and a dial plate (12). On one side of the connecting block (13) close to the limiting strip (10) and in front of the limiting strip (10), a storage hole (17) is formed.

5. The axial positioning structure of the needle roller bearing according to claim 4, wherein: The spring (18) is located inside the storage hole (17). One end of the spring (18) away from the limiting strip (10) is fixedly connected to the storage hole (17). The other end of the spring (18) is fixedly connected to the clamping block (15). Two clamping holes (9) are formed inside the placement groove (6). An anti-slip pattern (7) is fixed on the rear surface of the dial plate (12).

6. The axial positioning structure of the needle roller bearing according to claim 5, characterized in that: A sliding groove (21) is formed inside the baffle plate (11). One side of the dial plate (12) close to the limiting strip (10) is slidably connected to one side of the sliding groove (21) close to the limiting strip (10). Two grooves (14) are formed on the front surface of the dial plate (12). One end of the clamping block (15) close to the spring (18) is fixedly connected to the front end of the pulling rope (16). The rear end of the pulling rope (16) passes through the connecting block (13) and is fixedly connected to the inner rear surface of the groove (14).

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