CN218391582U - Steel wire rope expansion pre-tightening structure - Google Patents
Steel wire rope expansion pre-tightening structure Download PDFInfo
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- CN218391582U CN218391582U CN202221285407.XU CN202221285407U CN218391582U CN 218391582 U CN218391582 U CN 218391582U CN 202221285407 U CN202221285407 U CN 202221285407U CN 218391582 U CN218391582 U CN 218391582U
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Abstract
The utility model discloses a wire rope breathing pretension structure, it belongs to limbs training equipment technical field, include: the rotating shaft is provided with a first end and a second end, the first end is arranged in a hollow mode, and gaps are formed in the circumferential surface of the first end; the first steel wire wheel is sleeved on the first end and is provided with a first steel wire rope groove; the second steel wire wheel is sleeved on the first end and provided with a second steel wire rope groove; the expansion and shrinkage block is arranged in the first end and is in threaded connection with the inner wall of the first end, and the diameter of the expansion and shrinkage block is gradually reduced along the direction close to the second end; the utility model discloses a first wire rope groove on the first steel wire wheel and second wire rope groove on the second steel wire wheel can be used for fixed wire rope's tip, can adjust wire rope's pretension degree through rotating first steel wire wheel and second steel wire wheel to the location that can be quick through rotating the bloated piece rotates the position of first steel wire wheel and second steel wire wheel, thereby the stability of effectual assurance wire rope pretension degree, simple structure, it is convenient to adjust.
Description
Technical Field
The utility model relates to a limbs training equipment technical field, concretely relates to wire rope breathing pretension structure.
Background
For patients with limb impairment, rehabilitation training is an important link for eliminating or relieving limb impairment, and the main purpose of rehabilitation training is to enable limb joints of the patients to move and gradually recover the functions of muscles and nerves related to limb movement. The limb training device usually adopts a motor-driven mode to drive the limbs of the patient to perform active training or passive training, so that the limbs and joints of the patient can move.
In order to enable the limbs of a patient to effectively move, the existing limb rehabilitation training device usually adopts a mode that a motor drives a training arm to move, so that the limb of the patient can move, transmission can be realized between the motor and the training arm through a transmission belt, a chain, a gear or a steel wire rope, when the limb rehabilitation training device is used for a long time or the motion amplitude of the motion of the training arm is adjusted for different patients, the transmission preload between the motor and the training arm needs to be adjusted usually to ensure that the training arm can stably and effectively move, the existing transmission structure of the transmission belt, the chain or the gear is difficult to adjust the transmission preload, the transmission of the steel wire rope is usually realized by using a tension pulley when the transmission preload is adjusted, and the structure is also complicated.
Therefore, designing a steel wire rope expansion and contraction pre-tightening structure with simple structure and convenient adjustment is a problem to be solved urgently by manufacturers of limb rehabilitation training devices at the present stage.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a pair of wire rope breathing pretension structure, first wire rope groove on the first steel wire wheel and second wire rope groove on the second steel wire wheel can be used for fixed wire rope's tip, can adjust wire rope's pretension degree through rotating first steel wire wheel and second steel wire wheel to the location that can be quick through rotating the breathing piece rotates the position of first steel wire wheel and second steel wire wheel, thereby the stability of effectual assurance wire rope pretension degree, moreover, the steam generator is simple in structure, and it is convenient to adjust.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a steel wire rope expansion and contraction pre-tightening structure comprises:
the rotating shaft is provided with a first end and a second end, the first end is arranged in a hollow mode, and at least one gap arranged along the axial direction of the rotating shaft is formed in the circumferential surface of the first end;
the first steel wire wheel is sleeved on the first end, and a first steel wire rope groove is formed in the first steel wire wheel;
the second steel wire wheel is sleeved on the first end, and a second steel wire rope groove is formed in the second steel wire wheel;
the expansion and contraction block is arranged in the first end and is in threaded connection with the inner wall of the first end, and the diameter of the expansion and contraction block is gradually reduced along the direction close to the second end; the expansion block is movable between a first position and a second position, the second position being closer to the second end than the first position; in the first position, both the first wire wheel and the second wire wheel are rotatable about the rotational axis; when the first end is located at the first position, the expansion block expands the first end, the first steel wire wheel and the second steel wire wheel are both abutted to the outer peripheral surface of the first end, and the first steel wire wheel and the second steel wire wheel are both fixed on the rotating shaft.
As a preferred technical scheme, a position of the rotating shaft, which is close to the first end, is provided with a limiting block, and the first wire wheel is arranged between the second wire wheel and the limiting block.
As a preferable technical solution, the stopper is a protrusion disposed around the circumferential direction of the rotation shaft.
As a preferable technical solution, four slits are provided; and/or one end of the slit extends to the end face of the first end.
As a preferable technical solution, the first wire rope groove is arranged on a side surface of the first wire wheel far away from the second wire wheel; and/or the second steel wire rope groove is arranged on the side face, far away from the first steel wire wheel, of the second steel wire wheel.
As a preferable technical scheme, a side surface of the expansion and contraction block, which is far away from the second end, is provided with a rotary connecting groove.
As a preferable technical solution, the rotation connecting groove is a straight groove, a cross groove or a hexagon groove.
The beneficial effects of the utility model are shown in:
the utility model discloses a first wire rope groove on the first steel wire wheel and second wire rope groove on the second steel wire wheel can be used for fixed wire rope's tip, can adjust wire rope's pretension degree through rotating first steel wire wheel and second steel wire wheel to the location that can be quick through rotating the bloated piece rotates the position of first steel wire wheel and second steel wire wheel, thereby the stability of effectual assurance wire rope pretension degree, simple structure, it is convenient to adjust.
Drawings
Fig. 1 is an overall structural view of an embodiment of a steel wire rope expansion and contraction pre-tightening structure of the present invention;
fig. 2 is a side view of fig. 1.
In the figure: 1-rotating shaft, 11-first end, 111-gap, 12-second end, 13-limiting block, 2-first steel wire wheel, 21-first steel wire rope groove, 3-second steel wire wheel, 31-second steel wire rope groove and 4-expansion block.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, an embodiment of a steel wire rope expansion and contraction pre-tightening structure of the present invention includes:
the rotating shaft comprises a rotating shaft 1, wherein the rotating shaft 1 is provided with a first end 11 and a second end 12, the first end 11 is arranged in a hollow mode, at least one gap 111 arranged along the axial direction of the rotating shaft 1 is formed in the peripheral surface of the first end 11, and the peripheral surface of the first end 11 can expand outwards along the gap 111;
the first steel wire wheel 2 is sleeved on the first end 11, a first steel wire rope groove 21 is formed in the first steel wire wheel 2, and the end part of the steel wire rope can be fixed in the first steel wire rope groove 21;
the second steel wire wheel 3 is sleeved on the first end 11, a second steel wire rope groove 31 is formed in the second steel wire wheel 3, and the end part of the other steel wire rope can be fixed in the second steel wire rope groove 31;
the expansion and contraction block 4 is arranged in the first end 11, the expansion and contraction block 4 is in threaded connection with the inner wall of the first end 11, the diameter of the expansion and contraction block 4 is gradually reduced along the direction close to the second end 12, the shape of the inner wall of the first end 11 is matched with that of the expansion and contraction block 4, and the expansion and contraction block 4 can move along the axial direction of the rotating shaft 1 by rotating the expansion and contraction block 4; i.e. the expansion and contraction block 4 is movable between a first position and a second position, the second position being closer to the second end 12 than the first position; when the steel wire rope is in the first position, a gap is reserved between the first steel wire wheel 2 and the second steel wire wheel 3 and the outer peripheral surface of the first end 11, and the first steel wire wheel 2 and the second steel wire wheel 3 can rotate around the rotating shaft 1, so that the pre-tightening degree of the steel wire ropes on the first steel wire wheel 2 and the second steel wire wheel 3 can be adjusted; when the wire rope tensioning device is at the second position, the first end 11 is expanded by the expansion block 4, the first wire wheel 2 and the second wire wheel 3 are both abutted to the outer peripheral surface of the first end 11, and the first wire wheel 2 and the second wire wheel 3 are both fixed on the rotating shaft 1, so that the pre-tightening degree of the wire ropes on the first wire wheel 2 and the second wire wheel 3 is kept stable.
In this embodiment, referring to fig. 1 and fig. 2, a position of the rotating shaft 1 near the first end 11 is provided with a limiting block 13, the first wire wheel 2 is disposed between the second wire wheel 3 and the limiting block 13, and the limiting block 13 can limit the positions of the first wire wheel 2 and the second wire wheel 3; specifically, the limiting block 13 is preferably a protrusion arranged around the circumference of the rotating shaft 1; further, first steel wire wheel 2 and stopper 13 butt, second steel wire wheel 3 and 2 butts of first steel wire wheel can guarantee the steadiness after first steel wire wheel 2 and the fixed of second steel wire wheel 3 more.
In the present embodiment, referring to fig. 1, the number of the slits 111 is preferably four, so that the first end 11 can be expanded outward uniformly; preferably, one end of the slit 111 should extend to the end face of the first end 11, so as to ensure better expansion of the first end 11.
In this embodiment, referring to fig. 1, the first wire rope groove 21 is preferably disposed on a side surface of the first wire wheel 2 away from the second wire wheel 3, so as to conveniently fix the wire rope in the first wire rope groove 21; similarly, the second wire rope groove 31 is formed on the side surface of the second wire wheel 3 far away from the first wire wheel 2, so that the wire rope can be conveniently fixed in the second wire rope groove 31.
In this embodiment, referring to fig. 1, a side surface of the expansion and contraction block 4 away from the second end 12 is provided with a rotating connection groove, and when the expansion and contraction block 4 needs to be rotated, the expansion and contraction block 4 can be rotated by rotating the connection groove by using a screwdriver or a polygonal wrench; specifically, the rotary connecting groove can be a straight groove, a cross groove or a hexagonal groove.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A wire rope breathing pretension structure, characterized by includes:
the rotating shaft is provided with a first end and a second end, the first end is arranged in a hollow mode, and at least one gap arranged along the axial direction of the rotating shaft is formed in the circumferential surface of the first end;
the first steel wire wheel is sleeved on the first end, and a first steel wire rope groove is formed in the first steel wire wheel;
the second steel wire wheel is sleeved on the first end, and a second steel wire rope groove is formed in the second steel wire wheel;
the expansion and contraction block is arranged in the first end and is in threaded connection with the inner wall of the first end, and the diameter of the expansion and contraction block is gradually reduced along the direction close to the second end; the expansion block is movable between a first position and a second position, the second position being closer to the second end than the first position; in the first position, both the first wire wheel and the second wire wheel are rotatable about the rotational axis; when the first end is located at the first position, the expansion block expands the first end, the first steel wire wheel and the second steel wire wheel are both abutted to the outer peripheral surface of the first end, and the first steel wire wheel and the second steel wire wheel are both fixed on the rotating shaft.
2. The expansion and contraction pre-tightening structure for the steel wire rope according to claim 1, wherein a stopper is disposed on the rotating shaft at a position close to the first end, and the first wire wheel is disposed between the second wire wheel and the stopper.
3. The wire rope expansion and contraction pretensioning structure according to claim 2, wherein said stopper is provided as a protrusion disposed around the circumference of said rotation shaft.
4. The steel wire rope expansion and contraction pre-tightening structure according to claim 1, wherein the number of the slits is four; and/or one end of the slit extends to the end face of the first end.
5. The steel wire rope expansion and contraction pre-tightening structure according to claim 1, wherein the first steel wire rope groove is formed in the side face, away from the second steel wire wheel, of the first steel wire wheel; and/or the second steel wire rope groove is arranged on the side surface of the second steel wire wheel far away from the first steel wire wheel.
6. The steel wire rope expansion and contraction pretensioning structure according to claim 1, wherein the side of the expansion and contraction block remote from the second end is provided with a rotating connection groove.
7. The steel wire rope expansion and contraction pre-tightening structure according to claim 6, wherein the rotary connecting groove is a straight groove, a cross groove or a hexagonal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221285407.XU CN218391582U (en) | 2022-05-25 | 2022-05-25 | Steel wire rope expansion pre-tightening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221285407.XU CN218391582U (en) | 2022-05-25 | 2022-05-25 | Steel wire rope expansion pre-tightening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218391582U true CN218391582U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221285407.XU Active CN218391582U (en) | 2022-05-25 | 2022-05-25 | Steel wire rope expansion pre-tightening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218391582U (en) |
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2022
- 2022-05-25 CN CN202221285407.XU patent/CN218391582U/en active Active
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