CN211737907U - Structure for lengthening ball screw and ball screw - Google Patents
Structure for lengthening ball screw and ball screw Download PDFInfo
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- CN211737907U CN211737907U CN201921750279.XU CN201921750279U CN211737907U CN 211737907 U CN211737907 U CN 211737907U CN 201921750279 U CN201921750279 U CN 201921750279U CN 211737907 U CN211737907 U CN 211737907U
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- 229910000831 Steel Inorganic materials 0.000 claims description 70
- 239000010959 steel Substances 0.000 claims description 70
- 238000012423 maintenance Methods 0.000 description 16
- 210000001503 joint Anatomy 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
A structure for lengthening a ball screw and the ball screw comprise a section of hollow shaft (11) fixed at one end of a first screw (1) and a section of hollow pipe (21) fixed at one end of a second screw (2) and matched with the hollow shaft (11), wherein the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
Description
Technical Field
The utility model belongs to the technical field of ball screw connects the cooperation and uses, specifically is a lead screw length that relates to a ball screw exceeds in the device of normal throughput for add long ball screw's structure and ball screw.
Background
The ball screw pair is also called ball screw pair and ball screw pair, is formed by matching a screw and a nut, and is the most common transmission device with highest precision in transmission machinery.
As a lifting device, the lifting column is widely applied to various lifting platforms, such as lifting tables, lifting chairs, lifting tatami and the like. At present, a common lifting upright post generally comprises an inner tube, a middle tube and an outer tube which are mutually nested, and a driving mechanism arranged on the lifting upright post drives the inner tube and the outer tube to slide in a reciprocating manner relative to the middle tube, so that the lifting function is realized.
Patent No. 201810522845.5 discloses a lift stand, including the inner tube, well pipe, the outer tube, first lead screw, second lead screw and actuating mechanism, the inner tube cover is established at well intraductal and can be along the axial reciprocating motion of well pipe, the outer tube cover is established at well outside of tubes and can be along the axial reciprocating motion of well pipe, the bottom of well pipe is equipped with the medium plate, actuating mechanism locates on the medium plate, first lead screw and inner tube fixed connection, second lead screw and outer tube fixed connection, screw transmission is connected with first output nut on the first lead screw, screw transmission is connected with second output nut on the second lead screw, actuating mechanism drives first output nut, second output nut rotates so that first lead screw and second lead screw drive inner tube and outer tube respectively along the axial reciprocating motion of well pipe.
In practical application, the utility model discloses the people discovers, and is high higher when the height that elevating gear needs go up and down, and the length of required ball screw's lead screw also follows longer, and the length of the ball screw of conventional processing can not satisfy needs. In addition, when the length of the general screw rod reaches a certain length, the general screw rod is difficult to process. When the screw rod is long to the condition that the machine tool is difficult to machine, the cost of the equipment is greatly increased, and some screw rods cannot be machined at all, so that the market requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a structure for lengthening a ball screw by connecting two or more screws, so as to add the length of the long screw, and the extended screw can be used in a lifting device having special requirements for the length of the screw.
The utility model discloses technical scheme as follows:
the structure for lengthening the ball screw is characterized by comprising a section of hollow shaft (11) fixed at one end of a first screw (1) and a section of hollow pipe (21) fixed at one end of a second screw (2) and matched with the hollow shaft (11), wherein the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
Furthermore, an adjusting cushion block (111), a spring (112), a first steel ball (113) with the diameter of 16 and 3 second steel balls (114) with the diameter of 10 are sequentially mounted at the bottom of the hollow shaft (11); the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16; when the hollow shaft (11) is inserted into the hollow pipe (21) for butt joint, the bottom of the hollow pipe (21) presses a spring (112) in the hollow shaft, the spring (112) pushes the first steel ball (113) with the diameter of 16 forward under the pressing action, the first steel ball (113) with the diameter of 16 pushes the second steel ball (114) with the diameter of 3 phi 10 at the front end forward until the second steel ball (114) with the diameter of 3 phi 10 is pushed to the position of the hole (115) with the diameter of 3 phi 10, and then the second steel ball is pushed into the hole (115) with the diameter of 3 phi 10; the 3 steel balls with the diameter of 10 are embedded into the 3 holes with the diameter of 10 under the extrusion action; under the action of friction force and pressure, the hollow shaft firmly props against the hollow tube (21) of the second screw rod, and butt joint is completed.
And furthermore, the screw driver also comprises a maintenance hole (211) for maintenance, the maintenance hole is arranged on the hollow tube (21) of the second screw rod, the position of the maintenance hole is matched with the positions of the 3 phi 10 second steel balls (114), when the hole position (211) is rotated to the small hole (115) where any one of the three phi 10 second steel balls (114) is overlapped, a thimble is used for jacking the overlapped ball, so that the thimble is not jacked against the second ball screw rod any more, and the first screw rod and the second screw rod can be separated easily.
Furthermore, the screw driver further comprises an anti-rotation pin hole (212), and the anti-rotation pin hole (212) is arranged on the hollow tube (21) of the second screw rod.
The ball screw is characterized by comprising a first screw and a second screw, wherein one end of the first screw (1) is provided with a section of hollow shaft (11), one end of the second screw (2) is provided with a section of hollow pipe (21) matched with the hollow shaft (11), and the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
Furthermore, an adjusting cushion block (111), a spring (112), a first steel ball (113) with the diameter of 16 and 3 second steel balls (114) with the diameter of 10 are sequentially mounted at the bottom of the hollow shaft (11); the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16; when the hollow shaft (11) is inserted into the hollow pipe (21) for butt joint, the bottom of the hollow pipe (21) presses a spring (112) in the hollow shaft, the spring (112) pushes the first steel ball (113) with the diameter of 16 forward under the pressing action, the first steel ball (113) with the diameter of 16 pushes the second steel ball (114) with the diameter of 3 phi 10 at the front end forward until the second steel ball (114) with the diameter of 3 phi 10 is pushed to the position of the hole (115) with the diameter of 3 phi 10, and then the second steel ball is pushed into the hole (115) with the diameter of 3 phi 10; the 3 steel balls with the diameter of 10 are embedded into the 3 holes with the diameter of 10 under the extrusion action; under the action of friction force and pressure, the hollow shaft firmly props against the hollow tube (21) of the second screw rod, and butt joint is completed.
And furthermore, the screw driver also comprises a maintenance hole (211) for maintenance, the maintenance hole is arranged on the hollow tube (21) of the second screw rod, the position of the maintenance hole is matched with the positions of the 3 phi 10 second steel balls (114), when the hole position (211) is rotated to the small hole (115) where any one of the three phi 10 second steel balls (114) is overlapped, a thimble is used for jacking the overlapped ball, so that the thimble is not jacked against the second ball screw rod any more, and the first screw rod and the second screw rod can be separated easily.
Furthermore, the screw driver further comprises an anti-rotation pin hole (212), and the anti-rotation pin hole (212) is arranged on the hollow tube (21) of the second screw rod.
The beneficial effects of the utility model reside in that: the utility model aims at providing a but ball screw of butt joint has simple structure, and locking effectual can bear certain axial force, and it is convenient to dismantle, and can satisfy the butt joint of the ball screw of unlimited length.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a sectional view of the present invention.
Fig. 3 is a schematic view of the positions of the access hole and the anti-rotation pin hole of the utility model.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, 2 and 3, a structure for lengthening a ball screw is characterized by comprising a section of phi 25 hollow shaft (11) fixed at one end of a first screw (1) and a section of phi 25 hollow pipe (21) fixed at one end of a second screw (2) and matched with the hollow shaft (11), wherein the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
Furthermore, an adjusting cushion block (111), a spring (112), a first steel ball (113) with the diameter of 16 and 3 second steel balls (114) with the diameter of 10 are sequentially mounted at the bottom of the hollow shaft (11); the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16; when the hollow shaft (11) is inserted into the hollow pipe (21) for butt joint, the bottom of the hollow pipe (21) presses a spring (112) in the hollow shaft, the spring (112) pushes the first steel ball (113) with the diameter of 16 forward under the pressing action, the first steel ball (113) with the diameter of 16 pushes the second steel ball (114) with the diameter of 3 phi 10 at the front end forward until the second steel ball (114) with the diameter of 3 phi 10 is pushed to the position of the hole (115) with the diameter of 3 phi 10, and then the second steel ball is pushed into the hole (115) with the diameter of 3 phi 10; the 3 steel balls with the diameter of 10 are embedded into the 3 holes with the diameter of 10 under the extrusion action; under the action of friction force and pressure, the hollow shaft firmly props against the hollow tube (21) of the second screw rod, and butt joint is completed.
And furthermore, the screw driver also comprises a maintenance hole (211) for maintenance, the maintenance hole is arranged on the hollow tube (21) of the second screw rod, the position of the maintenance hole is matched with the positions of the 3 phi 10 second steel balls (114), when the hole position (211) is rotated to the small hole (115) where any one of the three phi 10 second steel balls (114) is overlapped, a thimble is used for jacking the overlapped ball, so that the thimble is not jacked against the second ball screw rod any more, and the first screw rod and the second screw rod can be separated easily.
Furthermore, the screw driver further comprises an anti-rotation pin hole (212), and the anti-rotation pin hole (212) is arranged on the hollow tube (21) of the second screw rod.
The ball screw is characterized by comprising a first screw and a second screw, wherein one end of the first screw (1) is provided with a section of hollow shaft (11), one end of the second screw (2) is provided with a section of hollow pipe (21) matched with the hollow shaft (11), and the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
Furthermore, an adjusting cushion block (111), a spring (112), a first steel ball (113) with the diameter of 16 and 3 second steel balls (114) with the diameter of 10 are sequentially mounted at the bottom of the hollow shaft (11); the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16; when the hollow shaft (11) is inserted into the hollow pipe (21) for butt joint, the bottom of the hollow pipe (21) presses a spring (112) in the hollow shaft, the spring (112) pushes the first steel ball (113) with the diameter of 16 forward under the pressing action, the first steel ball (113) with the diameter of 16 pushes the second steel ball (114) with the diameter of 3 phi 10 at the front end forward until the second steel ball (114) with the diameter of 3 phi 10 is pushed to the position of the hole (115) with the diameter of 3 phi 10, and then the second steel ball is pushed into the hole (115) with the diameter of 3 phi 10; the 3 steel balls with the diameter of 10 are embedded into the 3 holes with the diameter of 10 under the extrusion action; under the action of friction force and pressure, the hollow shaft firmly props against the hollow tube (21) of the second screw rod, and butt joint is completed.
And furthermore, the screw driver also comprises a maintenance hole (211) for maintenance, the maintenance hole is arranged on the hollow tube (21) of the second screw rod, the position of the maintenance hole is matched with the positions of the 3 phi 10 second steel balls (114), when the hole position (211) is rotated to the small hole (115) where any one of the three phi 10 second steel balls (114) is overlapped, a thimble is used for jacking the overlapped ball, so that the thimble is not jacked against the second ball screw rod any more, and the first screw rod and the second screw rod can be separated easily.
Furthermore, the screw driver further comprises an anti-rotation pin hole (212), and the anti-rotation pin hole (212) is arranged on the hollow tube (21) of the second screw rod.
The above description relates to only some embodiments of the present invention, and any replacement or modification made by those skilled in the art based on the spirit of the present invention should be covered by the protection scope of the present invention, which should be subject to the claims.
Claims (8)
1. The structure for lengthening the ball screw is characterized by comprising a section of hollow shaft (11) fixed at one end of a first screw (1) and a section of hollow pipe (21) fixed at one end of a second screw (2) and matched with the hollow shaft (11), wherein the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
2. The structure for lengthening a ball screw according to claim 1, wherein an adjusting pad (111), a spring (112), a first steel ball (113) with a diameter of 16, and 3 second steel balls (114) with a diameter of 10 are sequentially installed at the bottom of the hollow shaft (11); the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16.
3. The structure for lengthening a ball screw according to claim 2, further comprising a service hole (211) for service, said service hole being provided on the hollow tube (21) of said second screw at a position matching the position of said 3 phi 10 second steel balls (114).
4. The structure for lengthening a ball screw according to claim 1 or 2, further comprising an anti-rotation pin hole (212), the anti-rotation pin hole (212) being provided on the hollow tube (21) of the second screw.
5. The ball screw is characterized by comprising a first screw and a second screw, wherein one end of the first screw (1) is provided with a section of hollow shaft (11), one end of the second screw (2) is provided with a section of hollow pipe (21) matched with the hollow shaft (11), and the diameter of the hollow shaft (11) is matched with that of the hollow pipe (21), so that after the hollow shaft (11) is inserted into the hollow pipe (21), the hollow shaft and the hollow pipe are butted and combined into a whole.
6. The ball screw according to claim 5, characterized in that the bottom of the hollow shaft (11) is provided with an adjusting cushion block (111), a spring (112), a first steel ball (113) with a diameter of 16 and 3 second steel balls (114) with a diameter of 10 in sequence; the shaft wall of the front end part of the hollow shaft (11) is provided with 3 phi 10 holes (115); wherein the first steel ball (113) with the diameter of 16 is positioned at the front end of the spring (112) and is in close contact with the spring (112); the 3 second steel balls (114) with the diameter of 10 are positioned at the front ends of the first steel balls (113) with the diameter of 16 and are in close contact with the first steel balls (113) with the diameter of 16.
7. The ball screw according to claim 6, further comprising a service hole (211) for service, said service hole being provided in the hollow tube (21) of said second screw at a position matching the position of said 3 phi 10 second steel balls (114).
8. The ball screw according to claim 5 or 6, further comprising an anti-rotation pin hole (212), wherein the anti-rotation pin hole (212) is provided on the hollow tube (21) of the second screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750279.XU CN211737907U (en) | 2019-10-17 | 2019-10-17 | Structure for lengthening ball screw and ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750279.XU CN211737907U (en) | 2019-10-17 | 2019-10-17 | Structure for lengthening ball screw and ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211737907U true CN211737907U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921750279.XU Withdrawn - After Issue CN211737907U (en) | 2019-10-17 | 2019-10-17 | Structure for lengthening ball screw and ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211737907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657213A (en) * | 2019-10-17 | 2020-01-07 | 深圳市鸿栢科技实业有限公司 | Structure for lengthening ball screw and ball screw |
-
2019
- 2019-10-17 CN CN201921750279.XU patent/CN211737907U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657213A (en) * | 2019-10-17 | 2020-01-07 | 深圳市鸿栢科技实业有限公司 | Structure for lengthening ball screw and ball screw |
| CN110657213B (en) * | 2019-10-17 | 2024-07-23 | 深圳市鸿栢科技实业有限公司 | Structure for lengthening ball screw and ball screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201023 Effective date of abandoning: 20240723 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201023 Effective date of abandoning: 20240723 |