WO2008068928A1 - 牽引装置、および牽引装置のロープ巻き取り機構 - Google Patents
牽引装置、および牽引装置のロープ巻き取り機構 Download PDFInfo
- Publication number
- WO2008068928A1 WO2008068928A1 PCT/JP2007/065363 JP2007065363W WO2008068928A1 WO 2008068928 A1 WO2008068928 A1 WO 2008068928A1 JP 2007065363 W JP2007065363 W JP 2007065363W WO 2008068928 A1 WO2008068928 A1 WO 2008068928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rope
- pulley
- load
- load sensor
- traction device
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
- B66D1/38—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of guides movable relative to drum or barrel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
- A61F5/042—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for extension or stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
Definitions
- the present invention relates to a traction device used as a treatment device that pulls the neck or waist of a human body, and a rope winding mechanism of the traction device.
- FIGS. 5A and 5B shows a conventional mechanism used as a treatment device for traction of the neck or waist of a human body.
- FIG. 5A shows a schematic configuration of the traction device.
- FIG. 5B shows the traction device shown in FIG. 5A as viewed from the direction of arrow a.
- a traction rope (also simply referred to as “rope”) 110 that pulls the neck or waist of the human body in the direction of arrow c includes pulley C143 and pulley B142. Then, it is guided to the winding drum 111 through the path of the pulley D144 and the pulley A141.
- the rotation surface of the pulley D144 is arranged perpendicular to the rotation surfaces of the other pulleys A, B, and C.
- the conventional traction device transmits the load applied to the traction rope 110 to the rope winding mechanism in which the load is complicatedly combined.
- the load in the direction of arrow b applied to the pulley D144 acts on the coil spring 145 that is linearly displaced.
- the coil spring 145 contracts in proportion to the load, and the displacement is detected as a voltage change of the potentiometer 146. Thereby, the load applied to the rope 110 is detected.
- the winding drum 111 has a central shaft joined to a mainspring (spring) (not shown). Therefore, a constant tension is always applied to the rope 110, and the rope 110 is maintained in a horizontal position as shown in FIGS. 5A and 5B without dripping.
- the rope 110 is bent several times by the plurality of pulleys.
- the rope winding drum 111 is provided with a semicircular winding groove 11 la having a cross section of the rope on the winding surface.
- the rope 110 is wound around the winding drum 111 along the winding groove 111a.
- a traction device that has a load cell that detects traction force, and that is configured to detect traction force and use the detection signal for driving control of the motor that is the drive source of traction force (For example, see Patent Document 2).
- Patent Document 1 Japanese Patent Laid-Open No. 2003-88540
- Patent Document 2 Japanese Patent Application Laid-Open No. 59-118156
- the rope 110 is bent several times by a plurality of pulleys.
- this traction device detects a load applied to the rope 110 by using a coil spring 145 attached to the pulley 144.
- the rope 110 had a structure in which the load was strong.
- the winding surface of the winding drum 111 of the rope 110 is provided with a semicircular winding groove 11 la having a cross section of the rope.
- the rope 110 rubbed at the edge of the winding groove 11 la, shortening the rope life. As the rope 110 rubs, the surface of the rope is scraped off and rope scraps are generated. There was a problem that this debris invaded the moving parts of the mechanism, causing failure.
- the present invention has been made to solve such a problem.
- the purpose is to simplify the rope winding mechanism that pulls the rope.
- a traction device and a rope winding mechanism of the traction device in which the rope is not rubbed at the edge of the winding groove on the surface of the rope winding drum as in the conventional drum.
- the traction device of the present invention for applying a desired traction force to a to-be-towed body includes a brace connected to the to-be-triggered body, a rope to which the brace is attached at one end, and the other end of the rope to which the other end is attached.
- a traction mechanism including a winding drum that applies the traction force to the to-be-towed body by winding the rope, and a rope having a predetermined wrapping angle with respect to the rope to which the traction force is applied by being wound by the winding drum.
- a first pulley to which a rope load is applied from the rope and a connecting plate to hold the first pulley rotatably and to which the rope load is applied from the first pulley.
- a load sensor plate that holds the connecting plate at one end and is applied with the rope load from the connecting plate, an outer frame that fixes the other end of the load sensor plate, and the load sensor. And a load cell attached to the surface of the plate.
- the first pulley to which the rope load is applied from the rope to which the traction force is applied is not directly attached to the outer frame, but is attached to the outer frame via the connecting plate and the load sensor plate.
- a load cell is attached to the load sensor plate, and the load cell detects the strain of the load sensor plate due to the rope load.
- the rope load applied to the pulley can be detected with a simple configuration.
- the load applied to the towed body can be calculated from the detected value of the rope load.
- the traction device described above may include a second pulley that engages with the rope closer to the brace than the first pulley.
- the traction device can be configured using two pulleys.
- the longitudinal direction of the sensor plate is such that the rope moves from the second pulley to the first pulley, and the rope moves from the first pulley.
- the ropes may have directions equal to the second movement path of the rope to the take-up drum.
- the rope may be engaged with the first pulley so that the first movement path and the second movement path are orthogonal to each other.
- the load sensor plate is connected to the first movement path of the rope from the second pulley to the first pulley and the second movement path of the rope from the first pulley to the winding drum.
- a rope load twice the traction force is applied from the direction that makes an angle of 45 degrees. For this reason, in the load sensor plate, the rope load can be detected more effectively.
- the rope load may be a tensile load. With such a configuration, the tensile load is applied to the load sensor plate.
- the traction device includes a load sensor mechanism including the first pulley, the connection plate, and the load sensor plate, and the load sensor mechanism is configured to wind the rope of the winding drum. You may comprise so that rotation is possible following a position.
- the direction of the first pulley changes as the load sensor mechanism rotates following the rope winding position of the winding drum.
- the traction device includes a second pulley that engages with the rope closer to the brace than the first pulley, and the second pulley is used to rotate the load sensor. Along with the movement of the first movement path of the rope from the first pulley to the second pulley, it may be configured to be rotatable.
- the second pulley rotates following the movement of the first movement path accompanying the movement of the second movement path of the rope according to the winding position of the winding drum.
- the second pulley can be used to slide the first movement path to the third movement path.
- the rope winding mechanism of the traction device in which a desired traction force is applied to the to-be-towed object by the equipment connected to the to-be-to-be-drawn body and the rope to which the equipment is attached to one end.
- the other end of the rope is attached, and the winding drum applies the traction force to the to-be-towed body by winding the rope, and the winding drum
- the first pulley to which the rope load is applied from the rope and the rope to which the traction force is applied is engaged with the rope to which the traction force is applied and the rope load is applied from the rope.
- a second pulley that engages with the rope near a brace; a connection plate that rotatably holds the first pulley and is applied with the rope load from the first pulley; A load sensor plate that is held at the end and to which the rope load is applied from the connecting plate, an outer frame that fixes the other end of the load sensor plate, and a load cell that is attached to the surface of the load sensor plate A load sensor mechanism.
- the first pulley to which the rope load generated from the rope is applied is not directly attached to the outer frame, but is attached to the outer frame via the connecting plate and the load sensor plate.
- a load cell is attached to the load sensor plate, and the load cell detects the strain of the load sensor plate due to the rope load (strain due to the rope load).
- the rope winding mechanism of the traction device is configured using two pulleys.
- the rope load applied to the pulley can be detected with a simple configuration.
- the load applied to the towed body can be calculated from the detected value of the rope load.
- the longitudinal direction of the load sensor plate is the first movement path of the rope from the second pulley to the first pulley, and the first The second movement path of the rope from the pulley to the take-up drum may be in the same direction or at an angle.
- the rope is engaged with the first pulley so that the first movement path and the second movement path are orthogonal to each other. Also good.
- the load sensor plate can detect the rope load more effectively.
- the rope load may be a tensile load.
- the load sensor plate can detect the rope load more effectively.
- the load sensor mechanism is configured to be able to rotate following the rope winding position of the winding drum
- the second pulley includes You may comprise so that rotation is possible following the movement of the 1st movement path
- the direction of the first pulley changes as the load sensor mechanism rotates following the rope winding position on the winding surface of the winding drum.
- the second pulley rotates following the rotation of the first pulley according to the winding position of the winding drum, thereby providing a winding groove on the rope winding surface of the winding drum.
- the movement of the rope from the first movement path to the third movement path of the rope which changes according to the winding position of the winding drum in the second pulley, can be controlled. I can do it.
- the pulling device of the present invention can simplify the rope winding mechanism for pulling the rope.
- FIG. 1 is a diagram showing a configuration example of a traction device according to an embodiment of the present invention.
- 2 is a view of the load sensor mechanism of the traction device shown in FIG. 1 as viewed from the X direction in FIG.
- FIG. 3 is a view showing a rope winding mechanism according to the embodiment of the present invention shown in FIG. 1.
- FIG. 3 is a view showing a rope winding mechanism according to the embodiment of the present invention shown in FIG. 1.
- FIG. 4 is a diagram showing a load detection circuit using a load cell according to the embodiment of the present invention shown in FIG. 1.
- FIG. 4 is a diagram showing a load detection circuit using a load cell according to the embodiment of the present invention shown in FIG. 1.
- FIG. 5A is a diagram showing an example of a conventional traction device.
- FIG. 5B is a view of the conventional traction device shown in FIG. 5A as viewed from the direction a in FIG. 5A.
- FIG. 1 shows an example of a traction device according to an embodiment of the present invention.
- FIG. 1 is a diagram showing a schematic configuration of the traction device 1
- FIG. 2 is a diagram of the load sensor mechanism of the traction device 1 shown in FIG.
- the rope 10 is connected to the pulled body 2 connected to the fixture 3 of the fixing portion 4 via the appliance 5.
- the towed body 2 is a force patient's neck or waist shown schematically in FIG.
- a to-be-to-be-towed object 2 (towed body such as a patient's neck or waist) is attached to one end of a tow rope 10 (also simply referred to as “rope”) via a brace 5.
- the rope 10 is connected via a second pulley 13 and a first pulley 12 to a rope take-up drum 11 that holds the other end of the traction rope 10.
- the rope 10 is pulled by the pulling force generated by rotating the winding drum 11 in the direction of arrow B in FIG. 1 by a motor (not shown).
- the movement path of the rope from one end of the rope 10 attached to the brace 5 connected to the to-be-towed body 2 to the other end of the rope 10 attached to the winding drum 11 is called the whole movement path.
- This total travel route consists of a first travel route, a second travel route, and a third travel route.
- the first movement path refers to the movement path of the rope from the second pulley 13 to the first pulley 12.
- the second movement path refers to the movement path of the rope from the first pulley 12 to the winding drum 11.
- the third movement path refers to the movement path of the rope from one end where the brace 5 of the rope 10 is attached to the second pulley 13.
- the first pulley 12 is fixed to the pair of connecting plates 21 by bolts 7A.
- the connecting plate 21 is attached to the load sensor plate 22 with bolts 7B.
- the load sensor plate 22 is fixed to the outer frame 15 with bolts 7C. That is, the pulley 12 is not directly attached to the outer frame 15, but is attached to the outer frame 15 via the connecting plate 21 and the load sensor plate 22.
- the load applied to the rope 10 is applied to the pulley 12 attached to the outer frame 15.
- Pulley 12 is loaded horizontally leftward (in the direction of arrow H) and vertically upward (in the direction of arrow V). Therefore, the pulley 12 is connected to the load Because it is connected to the sensor plate 22, a load is applied to the pulley 12 on the load sensor plate 22 to which the load cell 23 is attached.
- the longitudinal direction of the load sensor plate 22 is set in the direction of 45 degrees (the angle of arrow D) with the horizontal direction H (second movement path) and the vertical direction V (first movement path).
- the horizontal force and the vertical force are equal in magnitude. Therefore, the resultant force of the horizontal force and the vertical force becomes a load in the direction A in FIG.
- the resultant rope load on the load sensor plate 22 is twice the load applied to the rope 10.
- the rope load refers to a load applied from the rope 10 to the first pulley 12.
- the rope load is proportional to the traction force applied to the to-be-drawn body. This proportionality constant is calculated from the relationship between the direction of the first movement path and the direction of the second movement path applied from the rope 10 via the first pulley 12 and the longitudinal direction of the load sensor plate 22 as described above.
- the lower end portion of the load sensor plate 22 is connected to the outer frame 15 with bolts 7C.
- the outer frame 15 is rotatably installed on the case base 17 through a rotating bearing 16.
- the outer frame 15 is configured to be rotatable in the direction indicated by the arrow by a rotation mechanism using a rotary bearing 16. Therefore, the outer frame 15 can be rotated in accordance with the winding position of the rope 10 on the winding surface of the winding drum 11. As the second movement path of the rope 10 moves following the winding position of the winding drum 11, the outer frame 15 rotates. By rotating the outer frame 15 in this way, the rope 10 can be wound in an orderly manner from the end of the rope winding drum 11 having a cylindrical winding surface without a winding groove. As described above, in this embodiment, a winding drum having a linear winding cross section without a winding groove can be used. For this reason, unlike the conventional drum, the rope 10 is not rubbed at the edge of the winding groove for winding the rope.
- the first pulley 12 As a component of the load sensor mechanism 6 rotates. This rotation also moves the first movement path of the rope 10. By this movement of the first movement route, the third movement route of the rope 10 also moves.
- the second pulley 13 moves the rope 10 from the third movement path force to the first movement path.
- This pulley 13 is connected to the rotating bearing 14 It can be rotated in the direction of arrow E. Therefore, the pulley 13 can rotate according to the movement of the first movement path and the third movement path. By this rotation, the rope 10 can be smoothly moved from the third movement path to the first movement path in the pulley 13.
- a load in a 45 degree direction (direction A in FIG. 1) applied from the traction rope 10 is first applied to the pulley 12.
- the rope load applied from this rope is applied to the connecting plate 21 via the bolt 7A.
- the connecting plate 21 is connected to the load sensor plate 22 by bolts 7B.
- the load generated on the traction rope 10 is applied to the load sensor plate 22.
- the load cell 23 is stuck on the surface of the load sensor plate 22, a strain corresponding to the rope load is generated in the load cell 23. This strain is converted into a resistance change in the load cell 23.
- This change in resistance (change in load) of the load cell 23 is detected as a change in voltage by the power source and the amplifier connected to the load cell 23.
- the bolt 7C is connected to the outer frame 15. Accordingly, the bore load applied to the load sensor plate 22 pulls the load sensor plate 22 in the opposite directions to the Bonole 7B, Bonore 7C, and force S. As a result, the load sensor plate 22 is distorted by tensile stress.
- FIG. 3 is a view showing a rope winding mechanism according to the embodiment of the present invention.
- FIG. 3 is a view of the traction device 1 shown in FIG.
- the load sensor mechanism 6 includes a first pulley 12 and a mechanism for detecting a load applied to the pulley 12 by a load cell 23.
- Load sensor mechanism 6 is a rotary bearing 1 Rotate by 6.
- the load sensor mechanism 6 is indicated by the arrow R according to the position where the rope 10 on the winding surface of the take-up drum 11 is wound around the drum (for example, the position indicated by the arrow P and the position indicated by the arrow Q). Rotate in the direction. In this way, it is possible to wind the rope 10 on the winding drum 11 in an orderly manner without climbing onto the adjacent rope.
- the winding start of the rope 10 on the winding drum 11 is at the right end of the winding drum surface.
- FIG. 4 shows a configuration example of a load detection circuit using a load cell according to the present embodiment.
- a rope load proportional to the load applied to the traction rope 10 is applied to the load sensor plate 22 as a pulling direction force.
- the load sensor 23 bonded to the load sensor plate 22 constitutes a bridge circuit 34 as shown in FIG.
- the strain generated by pulling the load sensor plate 22 is transmitted to the load cell 23.
- a power supply circuit 31 for supplying a stable and constant voltage to the bridge circuit 34 is provided.
- the power supply circuit 31 normally supplies a voltage of about 10 V to the bridge circuit 34.
- a power supply having a current capacity sufficient to cover the current flowing through the circuit is used.
- the present invention relates to a traction device used as a treatment device that pulls the neck or waist of a human body. You can power to apply. According to this towing device, the rope winding mechanism for towing the rope can be simplified.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Nursing (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Rehabilitation Tools (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800437789A CN101595055B (zh) | 2006-12-01 | 2007-08-06 | 牵引装置及牵引装置的绳索卷绕机构 |
US12/516,702 US8821428B2 (en) | 2006-12-01 | 2007-08-06 | Traction apparatus and rope take-up mechanism of traction apparatus |
KR1020097010894A KR101440082B1 (ko) | 2006-12-01 | 2007-08-06 | 견인장치 및 견인장치의 와이어 권취 기구 |
HK10105199.6A HK1138561A1 (en) | 2006-12-01 | 2010-05-27 | Traction apparatus and rope take-up mechanism of traction apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006325810A JP4473254B2 (ja) | 2006-12-01 | 2006-12-01 | 牽引装置、および牽引装置のロープ巻き取り機構 |
JP2006-325810 | 2006-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008068928A1 true WO2008068928A1 (ja) | 2008-06-12 |
Family
ID=39491840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/065363 WO2008068928A1 (ja) | 2006-12-01 | 2007-08-06 | 牽引装置、および牽引装置のロープ巻き取り機構 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8821428B2 (ja) |
JP (1) | JP4473254B2 (ja) |
KR (1) | KR101440082B1 (ja) |
CN (1) | CN101595055B (ja) |
HK (1) | HK1138561A1 (ja) |
WO (1) | WO2008068928A1 (ja) |
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US10968085B2 (en) | 2009-11-18 | 2021-04-06 | Electronic Theatre Controls, Inc. | Lift assembly systems and methods |
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CN109528452B (zh) * | 2017-09-21 | 2021-07-16 | 丰田自动车株式会社 | 负荷减轻装置 |
CN117228571A (zh) * | 2023-08-30 | 2023-12-15 | 无锡市安曼工程机械有限公司 | 一种卷扬自动张紧机构 |
CN117228571B (zh) * | 2023-08-30 | 2024-03-08 | 无锡市安曼工程机械有限公司 | 一种卷扬自动张紧机构 |
Also Published As
Publication number | Publication date |
---|---|
KR20090108002A (ko) | 2009-10-14 |
US20100137772A1 (en) | 2010-06-03 |
JP2008136653A (ja) | 2008-06-19 |
US8821428B2 (en) | 2014-09-02 |
CN101595055A (zh) | 2009-12-02 |
CN101595055B (zh) | 2012-12-05 |
KR101440082B1 (ko) | 2014-09-12 |
JP4473254B2 (ja) | 2010-06-02 |
HK1138561A1 (en) | 2010-08-27 |
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