CN213064320U

CN213064320U - Slewing bearing for wood grabbing device

Info

Publication number: CN213064320U
Application number: CN202021269601.XU
Authority: CN
Inventors: 陈黎; 叶书琴
Original assignee: Kyoei Seiki Co ltd
Current assignee: Kyoei Seiki Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-04-27
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a rotary support for log grab, which comprises an outer ring, the inner circle, the rolling element, first sealing washer and second sealing washer, the outer lane inboard is provided with first recess, the inner circle outside is provided with the second recess, first recess and second recess are around forming the rolling element passageway, the upper end that the outer lane is located first recess is equipped with first seal groove, the lower extreme that the inner circle is located the second recess is equipped with the second seal groove, first sealing washer is installed in first seal groove, the second sealing washer is installed in the second seal groove, the outer lane radially is equipped with first through-hole, first through-hole is equipped with the abaculus, the clearance between outer lane and the inner circle is 0.08 ~ 0.25mm, the material of outer lane and inner circle is 42CrMo steel after the quenching and tempering, the hardness of outer lane and inner circle is HB207 ~ 269. The utility model can improve the bearing capacity and the sealing performance of the slewing bearing and prolong the service life; make things convenient for operating personnel high frequency, nimble rotatory operation, improve the efficiency of loading and unloading wood.

Description

Slewing bearing for wood grabbing device

Technical Field

The utility model relates to an engineering machine tool technical field, in particular to grab wooden utensils slewing bearing.

Background

The slewing bearing is an important transmission part which is necessary for machinery which needs to do relative slewing motion between two objects and simultaneously bears axial force, radial force and tilting moment. The transmission component is also applied to the wood grabber.

At present, because the slewing bearing used in the wood grabber is made of common alloy steel, the mechanical strength and the durability of the manufactured slewing bearing are relatively poor, so that the bearing capacity and the external environment resistance of the slewing bearing are poor, and the service life of the slewing bearing is shortened; the traditional slewing bearing has poor sealing property, so that the traditional slewing bearing is easy to be polluted by the outside and enter the product to cause blockage, and the service life cycle of the product is shortened; because the slewing bearing's of grapple preparation precision is not high, lead to the grapple to be difficult to bear the operation of high frequency, nimble rotation like this to reduce the efficiency of loading and unloading wood.

Disclosure of Invention

The utility model aims to solve the technical problem that in order to overcome the defects in the prior art, the slewing bearing for the log grabber is provided, which effectively improves the bearing capacity and the sealing performance of the slewing bearing, thereby prolonging the service life of a product; more make things convenient for operating personnel high frequency, nimble rotatory operation, effectively improve the efficiency of loading and unloading wood.

In order to solve the technical problem, the technical scheme of the utility model is that:

a slewing bearing for a log grabber comprises an outer ring, an inner ring, a rolling body and two sealing rings, wherein a first groove matched with the rolling body is formed in the inner side of the outer ring, a second groove matched with the rolling body is formed in the outer side of the inner ring, a rolling body channel matched with the rolling body is formed by the first groove and the second groove in a surrounding mode, a first sealing groove is formed in the upper end, located at the first groove, of the outer ring, a second sealing groove is formed in the lower end, located at the second groove, of the inner ring, the two sealing rings are divided into a first sealing ring and a second sealing ring, the first sealing ring is arranged in the first sealing groove, the second sealing ring is arranged in the second sealing groove, the lower end face of the first sealing ring abuts against the upper end face of the inner ring, the upper end face of the second sealing ring abuts against the lower end face of the outer ring, and a, an insert block matched with the first through hole in shape is arranged in the first through hole, the gap between the outer ring and the inner ring is 0.08-0.25 mm, the outer ring and the inner ring are both made of quenched and tempered 42CrMo steel, and the hardness of the outer ring and the hardness of the inner ring are HB 207-269.

Preferably, an oil hole is formed in the outer ring in the radial direction, and the oil hole communicates with the rolling element passage.

As a preferable scheme, the outer diameter of the outer ring is 807.72-808.28 mm, the inner diameter of the outer ring is 693mm, the outer diameter of the inner ring is 696.5-697.5 mm, the inner diameter of the inner ring is 544-545 mm, the heights of the outer ring and the inner ring are both 71.5-72.5 mm, the upper end face of the outer ring is higher than the upper end face of the inner ring, and the height difference between the outer ring and the inner ring is 11 mm.

As a preferred scheme, outer lane and inner circle circumference are provided with a plurality of mounting holes, the mounting hole divide into first mounting hole and second mounting hole, the outer lane is evenly located to first mounting hole, the second mounting hole is evenly located on the inner circle, and the contained angle between the two adjacent first mounting holes and the contained angle between the two adjacent second mounting holes are 9.

As a preferred scheme, a plurality of rodents that are used for meeting with the grapple are provided with to the inboard circumference of inner circle.

Preferably, the upper end and the lower end of the rodent are provided with inclined planes, and an angle formed between each inclined plane and the horizontal plane is 45 degrees.

Preferably, the rolling bodies are balls, the diameter of each ball is 38.1mm, and the diameter of each first through hole is 45 mm.

As a preferred scheme, the slewing bearing for the log grabber further comprises a positioning pin, a second through hole is formed in the outer ring, an insertion block is provided with an insertion groove matched with the positioning pin, and the insertion block penetrates through the second through hole through the positioning pin and is inserted into the insertion groove to be fixedly embedded in the first through hole.

The utility model has the advantages that: the outer ring and the inner ring are made of hardened and tempered 42CrMo steel, and the hardness of the outer ring and the hardness of the inner ring are HB 207-269, so that the mechanical strength of the slewing bearing can be effectively improved, the bearing capacity of the slewing bearing is effectively improved, and the service life of the slewing bearing is prolonged; the inner ring is positioned at the upper end of the second groove and is provided with a first sealing groove, the outer ring is positioned at the lower end of the first groove and is provided with a second sealing groove, the number of the sealing rings is two, the two sealing rings are divided into a first sealing ring and a second sealing ring, the first sealing ring is arranged in the first sealing groove, the second sealing ring is arranged in the second sealing groove, the lower end face of the first sealing ring is abutted against the upper end face of the outer ring, and the upper end face of the second sealing ring is abutted against the lower end face of the inner ring, so that the sealing performance of the slewing bearing is improved, the phenomenon that the slewing bearing is damaged due to blockage caused by the fact that external dirt enters the interior of the slewing bearing due to the fact that the external working environment is severe is effectively; because this slewing bearing's mechanical strength increases, and the clearance between outer lane and the inner circle is 0.08 ~ 0.25mm in addition, and the machining precision is high promptly, just so enables the log grab ware that uses this slewing bearing and can bear high frequency, nimble rotatory operation, more can make things convenient for operating personnel high frequency, nimble rotatory operation, effectively improves the efficiency of loading and unloading wood.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of the present invention.

In the figure: 1-outer ring, 11-first through hole, 12-oil hole, 13-first mounting hole, 14-second through hole, 2-inner ring, 21-second mounting hole, 22-rodent, 23-inclined plane, 3-rolling body, 4-first sealing ring, 5-second sealing ring and 6-embedded block.

Detailed Description

The structure and operation of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 2, a slewing bearing for a log grabber comprises an outer ring 1, an inner ring 2, a rolling body 3 and sealing rings, wherein a first groove matched with the rolling body 3 is formed in the inner side of the outer ring 1, a second groove matched with the rolling body 3 is formed in the outer side of the inner ring 2, the first groove and the second groove surround to form a rolling body channel matched with the rolling body 3, a first sealing groove is formed in the upper end of the outer ring 1, a second sealing groove is formed in the lower end of the inner ring 2, the number of the sealing rings is two, the two sealing rings are divided into a first sealing ring 4 and a second sealing ring 5, the first sealing ring 4 is arranged in the first sealing groove, the second sealing ring 5 is arranged in the second sealing groove, the lower end face of the first sealing ring 4 abuts against the upper end face of the inner ring 2, and the upper end face of the second sealing ring 5 abuts against the lower end face of the outer, the outer ring 1 is radially provided with a first through hole 11 for the rolling body 3 to enter a rolling body channel, an insert block 6 matched with the first through hole in shape is arranged in the first through hole 11, the gap between the outer ring 1 and the inner ring 2 is 0.08-0.25 mm, the outer ring 1 and the inner ring 2 are both made of 42CrMo steel after quenching and tempering, and the hardness of the outer ring 1 and the hardness of the inner ring 2 are HB 207-269.

Preferably, the outer ring 1 is provided with oil holes 12 in a radial direction, and the oil holes 12 communicate with the rolling element passages.

Preferably, the outer diameter of the outer ring 1 is 807.72-808.28 mm, the inner diameter of the outer ring 1 is 693mm, the outer diameter of the inner ring 2 is 696.5-697.5 mm, the inner diameter of the inner ring 2 is 544-545 mm, the heights of the outer ring 1 and the inner ring 2 are both 71.5-72.5 mm, the upper end face of the outer ring 1 is higher than the upper end face of the inner ring 2, and the height difference between the outer ring 1 and the inner ring 2 is 11 mm.

As a preferred scheme, outer lane 1 and 2 circumference of inner circle are provided with a plurality of mounting holes, the mounting hole divide into first mounting hole 13 and second mounting hole 21, outer lane 1 is evenly located to first mounting hole 13, second mounting hole 21 is evenly located on inner circle 2, and the contained angle between two adjacent first mounting holes 13 and the contained angle between two adjacent second mounting holes 21 are 9.

Preferably, a plurality of rodent teeth 22 for connecting with a grapple are circumferentially arranged on the inner side of the inner ring 2.

Preferably, the upper end and the lower end of the rodent 22 are provided with inclined surfaces 23, and an angle formed between each inclined surface 23 and a horizontal plane is 45 degrees.

Preferably, the rolling elements 3 are balls, the diameter of each ball is 38.1mm, and the diameter of each first through hole 11 is 45 mm.

As a preferred scheme, the slewing bearing for the log grabber further comprises a positioning pin, the outer ring 1 is provided with a second through hole 14, the insert 6 is provided with a slot matched with the positioning pin, and the insert 6 penetrates through the second through hole 14 through the positioning pin and is inserted into the slot to be fixedly embedded in the first through hole 11.

The utility model has the advantages that: the outer ring 1 and the inner ring 2 are both made of hardened and tempered 42CrMo steel, and the hardness of the outer ring 1 and the hardness of the inner ring 2 are HB 207-269, so that the mechanical strength of the slewing bearing can be effectively improved, the bearing capacity of the slewing bearing is effectively improved, and the service life of the slewing bearing is prolonged; the inner ring 2 is provided with a first sealing groove at the upper end of the second groove, the outer ring 1 is provided with a second sealing groove at the lower end of the first groove, the number of the sealing rings is two, the two sealing rings are divided into a first sealing ring 4 and a second sealing ring 5, the first sealing ring 4 is arranged in the first sealing groove, the second sealing ring 5 is arranged in the second sealing groove, the lower end face of the first sealing ring 4 is abutted against the upper end face of the outer ring 1, and the upper end face of the second sealing ring 5 is abutted against the lower end face of the inner ring 2, so that the sealing performance of the slewing bearing is improved, the phenomenon that the slewing bearing is damaged due to blockage caused by the fact that external dirt enters the interior of the slewing bearing due to bad external working environment is effectively avoided, and the service life of the slewing bearing is; because this slewing bearing's mechanical strength increases, and the clearance between outer lane 1 and the inner circle 2 in addition is 0.08 ~ 0.25mm, and the machining precision is high promptly, just so enables the log grab ware that uses this slewing bearing and can bear high frequency, nimble rotatory operation, more can make things convenient for operating personnel high frequency, nimble rotatory operation, effectively improves the efficiency of loading and unloading wood.

The above, only the utility model discloses preferred embodiment, all be according to the utility model discloses a technical scheme does any slight modification, the equivalent change and the modification to above embodiment, all belong to the utility model discloses technical scheme's within range.

Claims

1. The utility model provides a slewing bearing for log grab which characterized in that: the rolling element sealing device comprises an outer ring, an inner ring, a rolling body and sealing rings, wherein a first groove matched with the rolling body is arranged on the inner side of the outer ring, a second groove matched with the rolling body is arranged on the outer side of the inner ring, the first groove and the second groove surround to form a rolling body channel matched with the rolling body, a first sealing groove is formed in the upper end, located at the first groove, of the outer ring, a second sealing groove is formed in the lower end, located at the second groove, of the inner ring, two sealing rings are arranged and divided into a first sealing ring and a second sealing ring, the first sealing ring is arranged in the first sealing groove, the second sealing ring is arranged in the second sealing groove, the lower end face of the first sealing ring abuts against the upper end face of the inner ring, the upper end face of the second sealing ring abuts against the lower end face of the outer ring, a first through hole for the rolling body to enter the rolling body channel is radially, the clearance between the outer ring and the inner ring is 0.08-0.25 mm, the outer ring and the inner ring are made of 42CrMo steel after quenching and tempering, and the hardness of the outer ring and the hardness of the inner ring are HB 207-269.

2. A slewing bearing for a log grabber as defined in claim 1, wherein: and the outer ring is radially provided with an oil hole which is communicated with the rolling body channel.

3. A slewing bearing for a log grabber as defined in claim 1, wherein: the outer diameter of the outer ring is 807.72-808.28 mm, the inner diameter of the outer ring is 693mm, the outer diameter of the inner ring is 696.5-697.5 mm, the inner diameter of the inner ring is 544-545 mm, the heights of the outer ring and the inner ring are both 71.5-72.5 mm, the upper end face of the outer ring is higher than the upper end face of the inner ring, and the height difference between the outer ring and the inner ring is 11 mm.

4. A slewing bearing for a log grabber as defined in claim 1, wherein: the outer lane and inner circle circumference are provided with a plurality of mounting holes, the mounting hole divide into first mounting hole and second mounting hole, the outer lane is evenly located to first mounting hole, the second mounting hole is evenly located and is circled in the circle, and the contained angle between the adjacent two first mounting holes and the contained angle between the adjacent two second mounting holes are 9.

5. A slewing bearing for a log grabber as defined in claim 1, wherein: the inboard circumference of inner circle is provided with a plurality of rodents that are used for meeting with the log grapple.

6. A slewing bearing for a log grabber as defined in claim 5, wherein: inclined planes are arranged at the upper end and the lower end of the rodent, and an angle between each inclined plane and the horizontal plane is 45 degrees.

7. A slewing bearing for a log grabber as defined in claim 1, wherein: the rolling element is the ball, the ball diameter is 38.1mm, the diameter of first through-hole is 45 mm.

8. A slewing bearing for a log grabber as defined in claim 1, wherein: still include the locating pin, the outer lane is equipped with the second through-hole, the abaculus be equipped with the slot of locating pin adaptation, the abaculus passes through the second through-hole through the locating pin and inserts in the slot fixed the inlaying and locate in the first through-hole.