CN216811342U - Invisible heavy ground shaft - Google Patents
Invisible heavy ground shaft Download PDFInfo
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- CN216811342U CN216811342U CN202220088585.7U CN202220088585U CN216811342U CN 216811342 U CN216811342 U CN 216811342U CN 202220088585 U CN202220088585 U CN 202220088585U CN 216811342 U CN216811342 U CN 216811342U
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Abstract
The utility model belongs to the field of ground shafts, and discloses an invisible heavy ground shaft which comprises a ground shaft shell, a bearing group, a ground shaft axis and steel balls, wherein a mounting hole is formed in the ground shaft shell; the bearing set comprises a ball bearing and two needle roller bearings, and the ball bearing and the two needle roller bearings are sequentially arranged in the mounting hole along the height direction of the ground shaft shell; one end of the axis of the ground shaft is a stepped shaft, the stepped shaft is inserted into the central holes of the ball bearing and the two needle roller bearings, and the other end of the axis of the ground shaft is connected with a main arm on the door leaf; the steel ball sets up in the mounting hole, the top of steel ball and the bottom butt of step shaft, the bottom of steel ball and the bottom butt of mounting hole. According to the utility model, one end of the axis of the ground shaft is set as the stepped shaft, the ball bearing and the two needle roller bearings are selected as the bearings of the whole ground shaft, and the steel balls are used for assisting bearing, so that the bearing of the whole ground shaft is larger, the bearing requirement of the heavy ground shaft is met, and the application range of the ground shaft is widened.
Description
Technical Field
The utility model relates to the field of earth's axes, in particular to an invisible heavy earth's axis.
Background
The door is indispensable in home life, in order to save space in modern house decoration, a vertical hinged door and a revolving door which rotate by a ground shaft are often used, wherein the vertical hinged door is a door leaf which is arranged on the side surface of the door and can be opened inwards (left inward opening and right inward opening) or outwards (left outward opening and right outward opening); the revolving door is characterized in that a ground shaft is arranged at the center of a door leaf, and double-sided rotation is realized through the ground shaft.
At present, the ground shaft on the market can only bear the door leaf with lighter weight, the door weight of the heavy door leaf is too large, and the existing ground shaft cannot bear the door weight of the heavy door leaf, so that the application range of the ground shaft is smaller, and the use of the ground shaft is severely limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an invisible heavy earth axle, which can increase the bearing capacity of the earth axle so as to enlarge the application range of the earth axle.
The technical scheme provided by the utility model is as follows:
in one aspect, there is provided a stealth heavy earth's axis, comprising:
the ground shaft shell is internally provided with a mounting hole;
the bearing set comprises a ball bearing and two needle roller bearings, and the ball bearing and the two needle roller bearings are sequentially arranged in the mounting hole along the height direction of the earth shaft shell;
one end of the ground shaft axis is a stepped shaft, the stepped shaft is inserted into the central holes of the ball bearing and the two needle roller bearings, and the other end of the ground shaft axis is used for being connected with a main arm on a door leaf;
the steel ball is arranged in the mounting hole, the top of the steel ball is abutted to the bottom of the stepped shaft, and the bottom of the steel ball is abutted to the bottom of the mounting hole.
In some embodiments, the stepped shaft includes a first stepped shaft, a second stepped shaft, and a third stepped shaft arranged sequentially from top to bottom in an axial direction, outer diameters of the first stepped shaft, the second stepped shaft, and the third stepped shaft are sequentially reduced, two needle bearings are respectively connected to the second stepped shaft, and a ball bearing is connected to the third stepped shaft.
In some embodiments, the mounting hole is a stepped hole, the stepped hole includes a first stepped hole, a second stepped hole, and a third stepped hole, the first stepped shaft is fitted with the first stepped hole, the second stepped shaft is located in the second stepped hole, and the third stepped shaft is located in the third stepped hole.
In some embodiments, the needle bearings are each of NA 4909;
the ball bearing is model number 51306.
In some embodiments, the top surface of the ground shaft housing and the top surface of the first step shaft are located on the same mounting surface, the mounting surface is a slope, and the height of the slope along the radial direction decreases from the middle to the edge.
In some embodiments, a first arc-shaped hole matched with the top of the steel ball is formed in the bottom of the stepped shaft, a second arc-shaped hole matched with the bottom of the steel ball is formed in the bottom of the mounting hole, the top of the steel ball is located in the first arc-shaped hole, and the bottom of the steel ball is located in the second arc-shaped hole.
In some embodiments, a conical shaft is arranged on the top of the axis of the ground shaft, and the conical shaft is used for connecting with a main arm on a door leaf.
In some embodiments, the ground shaft housing includes a first housing and a second housing disposed along an axial direction, the first housing having an outer diameter greater than an outer diameter of the second housing, the first housing disposed proximate to the tapered shaft.
The utility model has the technical effects that:
(1) one end of the ground shaft axis is set to be a stepped shaft, the ball bearing and the two needle roller bearings are selected as bearings of the whole ground shaft and play a role in assisting bearing through steel balls, so that the bearing of the whole ground shaft is large, the bearing requirement of a heavy ground shaft is met, and the application range of the ground shaft is widened.
(2) The steel balls are arranged between the stepped shaft and the ground shaft shell, so that friction force between the axis of the ground shaft and the ground shaft shell when the door leaf rotates can be relieved, the door leaf rotates more smoothly, and the steel balls can play a role in assisting bearing so as to further increase the bearing capacity of the ground shaft.
Drawings
The utility model is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is an exploded view of a stealth heavy earth's axis provided by an embodiment of the present application;
FIG. 2 is a schematic structural view of a stealth heavy earth's axis according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a stealth heavy earth's axis according to an embodiment of the present application.
The reference numbers illustrate:
10. a ground shaft housing; 11. mounting holes; 12. a mounting surface; 101. a first housing; 102. a second housing; 21. a ball bearing; 22. a needle bearing; 30. the axis of the ground shaft; 31. a stepped shaft; 311. a first step shaft; 312. a second step axis; 313. a third step shaft; 32. a tapered shaft; 40. and (5) steel balls.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
In one embodiment of the present application, as shown in fig. 1 and 2, a stealth heavy earth shaft comprises an earth shaft housing 10, a bearing set, an earth shaft axle center 30 and steel balls 40. A mounting hole 11 is formed in the ground shaft shell 10; the ground shaft housing 10 is used to be fixedly connected with the ground to fix the invisible heavy ground shaft on the ground, for example, an installation groove may be provided on the ground, the ground shaft housing 10 is partially inserted into the installation groove and the ground shaft housing 10 is fixed in the installation groove on the ground by concrete.
The bearing set comprises a ball bearing 21 and two needle roller bearings 22, and the ball bearing 21 and the two needle roller bearings 22 are sequentially arranged in the mounting hole 11 along the height direction of the earth shaft housing 10.
One end of the ground shaft axis 30 is a stepped shaft 31, the stepped shaft 31 is inserted into the central holes of the ball bearing 21 and the two needle roller bearings 22, and the other end of the ground shaft axis 30 is used for being connected with a main arm on a door leaf; the ball bearing 21 and the two needle roller bearings 22 are respectively matched with the stepped shaft 31 of the ground shaft axis 30, and the ground shaft axis 30 can rotate relative to the ground shaft shell 10 through the ball bearing 21 and the two needle roller bearings 22 so as to realize the rotation of the door leaf.
The steel ball 40 is arranged in the mounting hole 11, the top of the steel ball 40 is abutted against the bottom of the stepped shaft 31, and the bottom of the steel ball 40 is abutted against the bottom of the mounting hole 11. The steel ball 40 is arranged between the bottom of the ground shaft axis 30 and the inside of the ground shaft shell 10, the steel ball 40 can relieve the friction force generated by the ground shaft axis 30 when the door leaf rotates, so that the ground shaft axis 30 can rotate more smoothly, and the steel ball 40 can play a role in assisting bearing. The diameter of the steel ball 40 can be adaptively adjusted according to the outer diameter of the stepped shaft 31, that is, when the outer diameter of the bottom of the stepped shaft 31 is larger, the diameter of the steel ball 40 can be appropriately increased, and when the outer diameter of the bottom of the stepped shaft 31 is smaller, the diameter of the steel ball 40 can be appropriately decreased.
When the ground shaft is designed, firstly, the type of the bearing is selected according to the door leaf weight required to be borne by the ground shaft, and the combination of the bearings is designed, so that the total bearing weight of the bearings can reach the door leaf weight required to be borne by the ground shaft, then, the outer diameter of the stepped shaft 31 and the inner diameter of the mounting hole 11 are designed according to the inner diameter and the outer diameter of the bearings, so that the ground shaft axis 30, the bearings and the ground shaft shell 10 are matched, and after the ground shaft axis 30, the bearings and the ground shaft shell 10 are assembled together, the whole ground shaft can normally work.
Illustratively, in the present embodiment, the ball bearing 21 is 51306, the inner diameter of the ball bearing 21 is 30mm, the outer diameter of the ball bearing 21 is 60mm, the two needle bearings 22 are both NA4909, the inner diameter of the needle bearing 22 is 45mm, the outer diameter of the needle bearing 22 is 68mm, the width of the needle bearing 22 is 22mm, and the outer diameter of the steel ball 40 is 20 mm. The bearing capacity of the ground shaft can reach 1000kg by setting the axis 30 of the ground shaft as a stepped shaft 31 and selecting the ball bearing 21 with the model of 51306 and the two needle roller bearings 22 with the model of NA4909, so that the application range of the ground shaft is expanded. It can be understood that when the weight of the door leaf is greater than 1000kg, other types of bearings can be selected, and the outer diameter of the stepped shaft 31 of the ground shaft axis 30 is designed according to the type of the bearing, so that the load bearing of the ground shaft meets the requirement.
In this embodiment, one end through with earth's axis axle center 30 sets up to step shaft 31, and chooses for use ball bearing 21 and two bearing 22 as the bearing of whole earth's axis and play the effect of supplementary bearing through steel ball 40, can make the bearing of whole earth's axis great, reaches the bearing requirement of heavy earth's axis, and in addition, the whole appearance volume of earth's axis structure of this embodiment is less, installs the door leaf back on the earth's axis, and the earth's axis can be sheltered from by the door leaf, realizes the stealthy of earth's axis.
In some embodiments, as shown in fig. 1, the stepped shaft 31 includes a first stepped shaft 311, a second stepped shaft 312, and a third stepped shaft 313 sequentially arranged from top to bottom in the axial direction, the outer diameters of the first stepped shaft 311, the second stepped shaft 312, and the third stepped shaft 313 are sequentially reduced, two needle bearings 22 are respectively connected to the second stepped shaft 312, and a ball bearing 21 is connected to the third stepped shaft 313.
As shown in fig. 3, the mounting hole 11 is a stepped hole, the stepped hole includes a first stepped hole, a second stepped hole and a third stepped hole, the first stepped shaft 311 is matched with the first stepped hole, the second stepped shaft 312 is located in the second stepped hole, and the third stepped shaft 313 is located in the third stepped hole.
The outer diameters of the first stepped shaft 311, the second stepped shaft 312 and the third stepped shaft 313 are sequentially reduced, so that the ground axle center 30 can be conveniently installed in the installation hole 11 of the ground axle housing 10. In this embodiment, the ball bearing 21 is installed in the third stepped hole and is adapted to the third stepped shaft 313, and the two needle bearings 22 are respectively stacked in the second stepped hole and sleeved outside the second stepped shaft 312. It can be understood that, when the two needle roller bearings 22 are different in model, the two needle roller bearings 22 can be respectively sleeved outside different stepped shafts, that is, the number of steps of the stepped shafts can be adjusted according to actual needs, and the number of steps of the stepped shafts is not necessarily three, but may be two, four, and the like.
The first stepped shaft 311 is installed in the first stepped hole. The tapered shaft 32 is disposed on a surface of the first stepped shaft 311 away from the second stepped shaft 312, and the tapered shaft 32 is used for connecting with a main arm on the door leaf to mount the door leaf on an invisible heavy ground shaft.
In some embodiments, the top surface of the ground shaft housing 10 and the top surface of the first step shaft 311 are located on the same mounting surface 12, and the mounting surface 12 is a slope surface, and the height along the radial mounting surface 12 decreases from the middle to the edge.
The earth-axle housing 10 includes a first housing 101 and a second housing 102 arranged in an axial direction, the first housing 101 having an outer diameter larger than that of the second housing 102, the first housing 101 being arranged adjacent to the tapered axle 32. As shown in fig. 3, the outer shape of the ground shaft housing 10 is also stepped, the outer diameter of the top of the ground shaft housing 10 (i.e., the outer diameter of the first housing 101) is larger than the outer diameter of the bottom of the ground shaft housing 10 (i.e., the outer diameter of the second housing 102), the top of the ground shaft housing 10 is used for installing a door leaf, the outer diameter of the top of the ground shaft housing 10 is larger, the area of the installation surface 12 can be increased, so as to facilitate the installation of the door leaf, the outer diameter of the bottom of the ground shaft housing 10 is smaller, and the volume and weight of the whole ground shaft can be reduced.
In some embodiments, the bottom of the stepped shaft 31 is provided with a first arc hole matching with the top of the steel ball 40, the bottom of the mounting hole 11 is provided with a second arc hole matching with the bottom of the steel ball 40, the top of the steel ball 40 is located in the first arc hole, and the bottom of the steel ball 40 is located in the second arc hole. The first arc-shaped hole is formed in the bottom of the stepped shaft 31, the second arc-shaped hole is formed in the bottom of the mounting hole 11, and therefore the steel ball 40 can be conveniently connected with the ground shaft axis 30 and the ground shaft shell 10.
The invisible heavy ground shaft of the embodiment can be applied to a vertical hinged door or a revolving door, and the door leaf of the vertical hinged door or the revolving door is connected with one end, far away from the stepped shaft 31, of the ground shaft axis 30. After the door leaf is installed on the ground shaft axis 30 of the invisible heavy ground shaft, the rotation of the door leaf relative to the ground shaft shell 10 can be realized. One end of the ground shaft axis 30 is set to be the stepped shaft 31, and the ball bearing 21 and the two needle roller bearings 22 are selected, so that the ground shaft can bear the weight of a heavy door leaf, and the application range of the ground shaft is widened.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An invisible heavy earth's shaft, comprising:
the ground shaft shell is internally provided with a mounting hole;
the bearing set comprises a ball bearing and two needle roller bearings, and the ball bearing and the two needle roller bearings are sequentially arranged in the mounting hole along the height direction of the earth shaft shell;
one end of the ground shaft axis is a stepped shaft, the stepped shaft is inserted into the central holes of the ball bearing and the two needle roller bearings, and the other end of the ground shaft axis is used for being connected with a main arm on a door leaf;
the steel ball is arranged in the mounting hole, the top of the steel ball is abutted to the bottom of the stepped shaft, and the bottom of the steel ball is abutted to the bottom of the mounting hole.
2. The invisible heavy earth's shaft of claim 1,
the step shafts comprise a first step shaft, a second step shaft and a third step shaft which are sequentially arranged from top to bottom along the axial direction, the outer diameters of the first step shaft, the second step shaft and the third step shaft are sequentially reduced, the two needle roller bearings are respectively connected with the second step shaft, and the ball bearings are connected with the third step shaft.
3. The invisible heavy earth's shaft of claim 2,
the mounting hole is a stepped hole, the stepped hole comprises a first stepped hole, a second stepped hole and a third stepped hole, a first stepped shaft is matched with the first stepped hole, the second stepped shaft is located in the second stepped hole, and the third stepped shaft is located in the third stepped hole.
4. The invisible heavy earth's shaft of claim 2,
the models of the two needle roller bearings are respectively NA 4909;
the ball bearing is model number 51306.
5. The invisible heavy earth's shaft of claim 2,
the top surface of the ground shaft shell and the top surface of the first step shaft are positioned on the same mounting surface, the mounting surface is an inclined surface, and the height of the inclined surface along the radial direction is sequentially reduced from the middle to the edge.
6. The invisible heavy earth's shaft of any one of claims 1 to 5,
the bottom of the stepped shaft is provided with a first arc-shaped hole matched with the top of the steel ball, the bottom of the mounting hole is provided with a second arc-shaped hole matched with the bottom of the steel ball, the top of the steel ball is positioned in the first arc-shaped hole, and the bottom of the steel ball is positioned in the second arc-shaped hole.
7. The invisible heavy earth's shaft of any one of claims 1 to 5,
the top of the axis of the ground shaft is provided with a conical shaft which is used for being connected with a main arm on the door leaf.
8. The invisible heavy earth's shaft of claim 7,
the earth's axis shell includes along the first shell and the second shell of axial setting, the external diameter of first shell is greater than the external diameter of second shell, first shell is close to the setting of conical shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088585.7U CN216811342U (en) | 2022-01-13 | 2022-01-13 | Invisible heavy ground shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220088585.7U CN216811342U (en) | 2022-01-13 | 2022-01-13 | Invisible heavy ground shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216811342U true CN216811342U (en) | 2022-06-24 |
Family
ID=82064746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220088585.7U Active CN216811342U (en) | 2022-01-13 | 2022-01-13 | Invisible heavy ground shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216811342U (en) |
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2022
- 2022-01-13 CN CN202220088585.7U patent/CN216811342U/en active Active
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