Slewing bearing with pin teeth

Abstract

The utility model discloses a slewing bearing with pin teeth, relates to the technical field of slewing bearings, and provides the following scheme aiming at the problems that the pin teeth are easy to fall off and the practicability is low due to the fact that the strength of the pin teeth provided by the background technology is limited by the strength of a clamping rod and a push rod. Comprising an inner ring and a supporting ring fixedly arranged on the outer wall of the middle of the inner ring, and an upper fixing mechanism is arranged at the top of the inner ring; the upper fixing mechanism comprises an upper fixing plate connected to the outer wall of the top of the outer ring through bolts, a plurality of upper bosses fixedly arranged on the outer wall of the upper fixing plate, and a plurality of upper limiting rods fixedly arranged on the outer wall of the bottom of the upper fixing plate. The pin teeth can be rapidly and conveniently installed and replaced, when one end of each pin tooth is damaged, the other end of each pin tooth can be used, meanwhile, the pin teeth are not prone to falling off, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing with column pin teeth. Background Art

[0002] The slewing bearing is a new type of mechanical component, which consists of inner and outer rings, rolling elements, etc. The slewing bearing is a large bearing that can withstand comprehensive loads and can simultaneously withstand large axial, radial loads and overturning moments.

[0003] After searching, a Chinese patent (application number is "202023294986.8") discloses "a slewing bearing with pin teeth". The slewing bearing includes a ring, an inner ring, balls and pin teeth. The inner ring is located inside the outer ring, and the balls are evenly distributed between the outer ring and the inner ring. A plurality of evenly distributed pin grooves are arranged around the inner wall of the inner ring. Pin tooth seats are inserted into the interiors of the plurality of pin grooves. The pin teeth are fixedly arranged on the side walls of the pin tooth seats. The pin tooth seats are hollow structures. Two fixing rings are symmetrically arranged inside the pin tooth seat, and the circumferential walls of the two fixing rings are fixedly connected to the inner wall of the pin tooth seat. A clamping rod is horizontally passed through the interior of the two fixing rings, and the rod walls of the two clamping rods are slidably arranged in the corresponding interiors of the fixing rings. Although the above-mentioned slewing bearing can be quickly installed during use, when the slewing bearing is driven to rotate by the pin teeth, the strength of the pin teeth is limited by the strength of the clamping rod and the push rod, which makes the pin teeth easy to fall off and has low practicality. Utility Model Content

[0004] The utility model provides a slewing bearing with column pin teeth, which solves the problem that the strength of the column pin teeth of the reference document is limited by the strength of the clamping rod and the push rod, causing the column pin teeth to fall off easily and having low practicality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The cam is secured to the upper and lower surfaces of the wheel hub and the wheel hub, and the cam is secured to the lower surface of the wheel hub by a spring, and the cam is secured to the lower surface of the wheel hub.

[0007] Preferably, retaining grooves are formed on the outer walls of the top and bottom of the outer ring at equal distances, and a plurality of rollers are rotatably mounted in the retaining grooves.

[0008] Preferably, the inner ring abuts against the outer walls of several rollers, and the top and bottom of the support ring abut against the outer walls of one end of several rollers respectively, and limiting grooves are provided on the outer walls of the bottom and top of the inner ring.

[0009] Preferably, an oil filling hole is opened on the top outer wall of the upper fixed plate, and a rubber plug is inserted in the oil filling hole, the bottom ends of several upper limit rods are respectively slidably sleeved in the limit grooves, an upper annular groove is opened on the bottom outer wall of the upper fixed plate, and the top ends of several rollers close to the top of the outer ring are sleeved in the upper annular groove.

[0010] Preferably, the top ends of several lower limit rods are respectively slidably sleeved in the limit grooves, a lower annular groove is opened on the top outer wall of the lower fixed plate, and the bottom ends of several rollers close to the bottom of the outer ring are sleeved in the lower annular groove.

[0011] Through the above scheme, the upper fixing plate and the lower fixing plate are respectively fixed to the top and bottom outer walls of the outer ring, and the inner ring is limited and fixed by multiple upper limit rods and lower limit rods to prevent the inner ring from shaking.

[0012] Preferably, one end of the column pin tooth is inserted into the slot, and a pin shaft is inserted into the fixing hole, the upper part of the pin shaft passes through and is inserted into the top outer wall of the upper boss, and the lower part of the pin shaft passes through and is inserted into the bottom outer wall of the lower boss.

[0013] Through the above scheme, the column pin tooth is clamped between the upper boss and the lower boss by the pin shaft, and the column pin tooth is clamped in the groove on the outer wall of the outer ring. When a column pin tooth is damaged, the corresponding pin shaft is removed, and then the damaged end is clamped in the groove and fixed with the pin shaft. When the column pin tooth needs to be replaced, the new column pin tooth is clamped in the groove and fixed with the pin shaft.

[0014] The beneficial effects of the utility model are:

[0015] The column pin tooth is clamped between the upper boss and the lower boss through the pin shaft, and the column pin tooth is clamped in the clamping groove on the outer wall of the outer ring. When one of the column pin teeth is damaged, the corresponding pin shaft is removed, and then the damaged end is clamped in the clamping groove and fixed with the pin shaft. When the column pin tooth needs to be replaced, the new column pin tooth is clamped in the clamping groove and fixed with the pin shaft. The column pin tooth can be installed and replaced quickly and conveniently. When one end of the column pin tooth is damaged, the other end of the column pin tooth can still be used. At the same time, the column pin tooth is not easy to fall off, which improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of a front three-dimensional structure of a slewing bearing with column pin teeth.

[0017] Figure 2 The utility model is a schematic diagram of the front cross-sectional structure of a slewing bearing with column pin teeth.

[0018] Figure 3 The utility model is a schematic diagram of the outer ring structure of a slewing bearing with column pin teeth.

[0019] Figure 4 The utility model is a schematic diagram of a roller structure of a slewing bearing with column pin teeth.

[0020] Figure 5 The utility model is a schematic diagram of the inner ring structure of a slewing bearing with column pin teeth.

[0021] Figure 6 The utility model is a schematic diagram of the upper fixing mechanism structure of a slewing bearing with column pin teeth.

[0022] Figure 7 The utility model is a bottom view structural schematic diagram of an upper fixing mechanism of a slewing support with column pin teeth.

[0023] Figure 8 The utility model is a schematic diagram of the structure of the lower fixing mechanism of the slewing bearing with column pin teeth.

[0024] Fig. 9The utility model is a schematic diagram of the structure of a meshing assembly of a slewing bearing with column pin teeth.

[0025] In the figure: 1. outer ring; 11. retaining groove; 2. roller; 3. inner ring; 301. inner ring; 302. support ring; 31. limit groove; 4. upper fixing mechanism; 401. upper fixing plate; 402. upper boss; 403. upper limit rod; 404. rubber plug; 41. upper annular groove; 5. lower fixing mechanism; 501. lower fixing plate; 502. lower boss; 503. lower limit rod; 51. lower annular groove; 6. meshing assembly; 601. column pin tooth; 602. pin shaft. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1, reference Figure 1-5 A slewing bearing with column pin teeth comprises an outer ring 1 with slots distributed at equal distances on the outer wall, a plurality of rollers 2 and an inner ring 3 sleeved in the outer ring 1, retaining grooves 11 distributed at equal distances are opened on the top and bottom outer walls of the outer ring 1, a plurality of rollers 2 are rotatably installed in the retaining grooves 11, the inner ring 3 comprises an inner ring 301, a support ring 302 fixed on the outer wall of the middle part of the inner ring 301, the inner ring 301 abuts against the outer walls of the plurality of rollers 2, the top and bottom of the support ring 302 abut against the outer walls of one end of the plurality of rollers 2 respectively, and limiting grooves 31 are opened on the outer walls of the bottom and top of the inner ring 301.

[0028] Example 2, reference Figure 6-8A slewing bearing with column pin teeth also includes an upper fixing mechanism 4, which includes an upper fixing plate 401 connected to the top outer wall of the outer ring 1 by bolts, a plurality of upper bosses 402 respectively fixed on the outer wall of the upper fixing plate 401, and a plurality of upper limit rods 403 respectively fixed on the bottom outer wall of the upper fixing plate 401, an oil filling hole is opened on the top outer wall of the upper fixing plate 401, a rubber plug 404 is inserted in the oil filling hole, the bottom ends of the plurality of upper limit rods 403 are respectively slidably sleeved in the limit groove 31, an upper annular groove 41 is opened on the bottom outer wall of the upper fixing plate 401, and a plurality of upper limit rods 403 are respectively slidably sleeved in the limit groove 31. The top end of the roller 2 at the top of the outer ring 1 is sleeved in the upper annular groove 41, and a lower fixing mechanism 5 is provided at the bottom of the inner ring 3. The lower fixing mechanism 5 includes a lower fixing plate 501 connected to the outer wall of the bottom of the outer ring 1 by bolts, a plurality of lower bosses 502 respectively fixed on the outer wall of the lower fixing plate 501, and a plurality of lower limit rods 503 respectively fixed on the outer wall of the top of the lower fixing plate 501. The top ends of the plurality of lower limit rods 503 are respectively slidably sleeved in the limit groove 31. A lower annular groove 51 is opened on the outer wall of the top of the lower fixing plate 501, and the bottom ends of the plurality of rollers 2 close to the bottom of the outer ring 1 are sleeved in the lower annular groove 51.

[0029] Example 3, reference Fig. 9 A slewing bearing with column pin teeth also includes a plurality of meshing components 6. The meshing components 6 include a column pin tooth 601 with a fixing hole on the top outer wall. The column pin tooth 601 is made of a high-hardness material such as tungsten steel. The column pin tooth 601 is two identical meshing teeth combined into a whole. One end of the column pin tooth 601 is inserted into the slot, and a pin shaft 602 is inserted into the fixing hole. The upper part of the pin shaft 602 passes through and is inserted into the top outer wall of the upper boss 402, and the lower part of the pin shaft 602 passes through and is inserted into the bottom outer wall of the lower boss 502.

[0030] Working principle: The pin tooth 601 is clamped between the upper boss 402 and the lower boss 502 through the pin shaft 602, and the pin tooth 601 is clamped in the groove on the outer wall of the outer ring 1. When a pin tooth 601 is damaged, remove the corresponding pin shaft 602, and then clamp the damaged end in the groove and fix it with the pin shaft 602. When the pin tooth 601 needs to be replaced, the new pin tooth 601 is clamped in the groove and fixed with the pin shaft 602.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slewing bearing with pin teeth, comprising an outer ring (1) with slots equidistantly distributed on the outer wall, a plurality of rollers (2) and an inner ring (3) sleeved inside the outer ring (1), characterized in that: The inner ring (3) comprises an inner ring (301) and a support ring (302) fixedly arranged on the outer wall of the middle part of the inner ring (301); An upper fixing mechanism (4) is provided at the top of the inner ring (3), and the upper fixing mechanism (4) comprises an upper fixing plate (401) connected to the outer wall of the top of the outer ring (1) by bolts, a plurality of upper bosses (402) respectively fixed on the outer wall of the upper fixing plate (401), and a plurality of upper limit rods (403) respectively fixed on the outer wall of the bottom of the upper fixing plate (401); A lower fixing mechanism (5) is provided at the bottom of the inner ring (3), and the lower fixing mechanism (5) comprises a lower fixing plate (501) connected to the outer wall of the bottom of the outer ring (1) by bolts, a plurality of lower bosses (502) respectively fixed on the outer wall of the lower fixing plate (501), and a plurality of lower limiting rods (503) respectively fixed on the outer wall of the top of the lower fixing plate (501); A plurality of engagement components (6) are provided on the outer wall of the outer ring (1), and the engagement components (6) include column pin teeth (601) with fixing holes opened on the top outer wall.

2. A slewing bearing with column pin teeth according to claim 1, characterized in that: The outer ring (1) has retaining grooves (11) on the top and bottom outer walls thereof which are equidistantly distributed, and a plurality of rollers (2) are rotatably mounted in the retaining grooves (11).

3. A slewing bearing with column pin teeth according to claim 1, characterized in that: The inner ring (301) abuts against the outer walls of the plurality of rollers (2), and the top and bottom of the support ring (302) respectively abut against the outer walls of one end of the plurality of rollers (2), and limiting grooves (31) are provided on the outer walls of the bottom and top of the inner ring (301).

4. A slewing bearing with column pin teeth according to claim 1, characterized in that: An oil filling hole is opened on the top outer wall of the upper fixed plate (401), and a rubber plug (404) is inserted into the oil filling hole. The bottom ends of the plurality of upper limit rods (403) are respectively slidably sleeved in the limit grooves (31). An upper annular groove (41) is opened on the bottom outer wall of the upper fixed plate (401), and the top ends of the plurality of rollers (2) close to the top of the outer ring (1) are sleeved in the upper annular groove (41).

5. The slewing bearing with column pin teeth according to claim 1, characterized in that: The top ends of the plurality of lower limit rods (503) are respectively slidably sleeved in the limit grooves (31), a lower annular groove (51) is opened on the top outer wall of the lower fixed plate (501), and the bottom ends of the plurality of rollers (2) close to the bottom of the outer ring (1) are sleeved in the lower annular groove (51).

6. A slewing bearing with column pin teeth according to claim 1, characterized in that: One end of the column pin tooth (601) is inserted into the slot, and a pin shaft (602) is inserted into the fixing hole. The upper part of the pin shaft (602) passes through and is inserted into the top outer wall of the upper boss (402), and the lower part of the pin shaft (602) passes through and is inserted into the bottom outer wall of the lower boss (502).

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