CN120077001A - Compensating sleeve inserting and extracting auxiliary tool and compensating sleeve extracting method - Google Patents
Compensating sleeve inserting and extracting auxiliary tool and compensating sleeve extracting method Download PDFInfo
- Publication number
- CN120077001A CN120077001A CN202280101197.0A CN202280101197A CN120077001A CN 120077001 A CN120077001 A CN 120077001A CN 202280101197 A CN202280101197 A CN 202280101197A CN 120077001 A CN120077001 A CN 120077001A
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- CN
- China
- Prior art keywords
- compensating sleeve
- sleeve
- fulcrum
- bolt
- compensating
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The compensating sleeve insertion/extraction aid is used when inserting or extracting a compensating sleeve of a valve of a hydraulic elevator. The compensating sleeve insertion/extraction auxiliary tool includes a connection member having one end connected to a top surface of the compensating sleeve and the other end extending in an extraction direction of the compensating sleeve, a plate member connected to the other end of the connection member and having an action surface portion extending in a direction intersecting the extraction direction, a fulcrum member provided so as to protrude from a housing engagement surface in the extraction direction, and an operation member having a distal end portion thereof as an action point and in contact with the action surface portion of the plate member, an intermediate portion thereof as a fulcrum and in contact with the fulcrum member, and a base end portion thereof as a force point and operated by an operator.
Description
Technical Field
The present disclosure relates to a technique for extracting or inserting a compensating sleeve of a valve of a hydraulic elevator.
Background
Patent document 1 discloses a sleeve extracting device. The sleeve extracting device is provided with a rod-shaped member. The rod-shaped member is provided with a tap portion which is engaged with the inner wall of the sleeve and rotated to form an internal thread in the inner wall of the sleeve. Therefore, the tap portion provided on the rod-shaped member is screwed into the sleeve by rotating the rod-shaped member while entering the inside of the sleeve. By pulling out the rod-shaped member coupled to the sleeve from the object, the sleeve pushed into the object is also pulled out from the object.
Prior art literature
Patent literature
Patent document 1 Japanese patent application laid-open No. 2018-20387
Disclosure of Invention
Problems to be solved by the invention
Hydraulic elevator valves are sometimes serviced. In the maintenance of the valve, there is a work of extracting the compensation sleeve from the valve. In this operation, as in the technique of patent document 1, after a member such as a screw is screwed into the compensation sleeve, the screw is pulled out together with the compensation sleeve. However, it may be difficult to pull out the compensation sleeve that is firmly pushed in, and the work may be heavy for the operator. The same is true for the operation of inserting the compensating sleeve into the valve.
The present disclosure has been made to solve the above-described problems, and an object thereof is to provide a compensating sleeve insertion/extraction auxiliary tool and a compensating sleeve extraction method capable of reducing the load on an operator in an operation of extracting or inserting a compensating sleeve of a valve of a hydraulic elevator.
Means for solving the problems
A compensating sleeve insertion/extraction aid for extracting a compensating sleeve from a sleeve hole provided in a housing mating surface of a valve of a hydraulic elevator, the compensating sleeve insertion/extraction aid comprising a connecting member having one end connected to a top surface of the compensating sleeve and the other end extending in an extraction direction of the compensating sleeve, a plate member connected to the other end of the connecting member and having an operating surface portion extending in a direction intersecting the extraction direction, a fulcrum member provided so as to protrude from the housing mating surface in the extraction direction, and an operating member having an end portion as an operating point and contacting the operating surface portion of the plate member, an intermediate portion as a fulcrum and contacting the fulcrum member, and a base end portion as a force point and operated by an operator.
The present disclosure also provides a compensating sleeve extracting method for extracting a compensating sleeve from a sleeve hole provided in a housing mating surface of a valve of a hydraulic elevator using a compensating sleeve inserting auxiliary tool, the compensating sleeve inserting auxiliary tool including a fulcrum bolt, a connecting bolt having a threaded portion formed on one end side and a head portion having a larger diameter than the threaded portion formed on the other end side, a plate member having an acting surface portion formed with a through hole having a larger diameter than the threaded portion and smaller than the head portion, and an operating member operated by an operator, wherein the compensating sleeve extracting method includes a first step of screwing the fulcrum bolt into a threaded hole provided in the housing mating surface, a second step of screwing the connecting bolt into the threaded hole provided in a top surface of the compensating sleeve in a state of being inserted into the through hole so that a gap is formed between the acting surface portion and the top surface, a third step of adjusting the screwing amounts of the fulcrum bolt and the connecting bolt, and a fourth step of bringing a distal end portion into contact with the acting surface portion of the plate member as an acting point, and bringing a middle portion into contact with the base portion as a fulcrum to bring the middle portion into contact with the base portion as a force to the base portion.
Effects of the invention
According to the compensating sleeve insertion/extraction aid of the present disclosure, the lever that pulls up the compensating sleeve in the extraction direction can be formed by the connecting member, the plate member, the fulcrum member, and the operating member. Thus, even the compensation sleeve that is firmly pressed in can be pulled out with a small force. As a result, the burden on the operator is reduced.
Drawings
Fig. 1 is a view showing an external appearance of a valve to which the insertion/removal aid according to the embodiment is applied.
Fig. 2 is a diagram for explaining the component structure of the compensating sleeve insertion/extraction auxiliary tool.
Fig. 3 is a view showing an example of mounting the compensating sleeve insertion/extraction auxiliary tool according to the embodiment.
Fig. 4 is an enlarged view showing an example of mounting the compensating sleeve insertion/extraction auxiliary tool according to the embodiment.
Fig. 5 is a diagram showing an example of the operation of the compensating sleeve insertion/extraction auxiliary tool according to the embodiment.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals, and repetitive description thereof will be omitted.
Embodiments are described.
1. Valve appearance structure of compensating sleeve plug auxiliary tool of application embodiment
Fig. 1 is a view showing an external appearance of a valve to which the insertion/removal aid according to the embodiment is applied. The valve 10 shown in the figure is a device for controlling the hydraulic pressure of a hydraulic elevator. A side of the valve 10 is mounted with a housing 12 by six mounting bolts 14. The compensating sleeve 16 is an internal structural component of the valve 10. If the housing 12 is removed, the top surface of the compensating sleeve 16 inserted into the sleeve bore is exposed. In the following description, the direction in which the compensation sleeve 16 is pulled out of the sleeve hole is referred to as "pulling-out direction".
2. Structure of compensating sleeve insertion/extraction auxiliary tool of embodiment
The valve 10 of the hydraulic elevator is regularly inspected by an operator. The replacement parts for service include O-rings for the compensating sleeve 16. To perform this O-ring replacement operation, the compensating sleeve 16 needs to be temporarily pulled out of the valve 10. A threaded hole is provided in the top surface of the compensation sleeve 16. The operator pulls the bolt in the pulling-out direction by screwing the bolt into the screw hole, and pulls the compensation sleeve 16 out of the sleeve hole. However, it may be difficult to pull out the compensation sleeve 16 that is firmly pushed in, and the work may be heavy for the operator.
The compensating sleeve insertion/removal aid according to the present embodiment is a tool for assisting the removal of the compensating sleeve 16 during such maintenance work. Fig. 2 is a diagram for explaining the component structure of the compensating sleeve insertion/extraction auxiliary tool. Fig. 3 is a view showing an example of mounting the compensating sleeve insertion/extraction auxiliary tool according to the embodiment. Fig. 4 is an enlarged view showing an example of mounting the compensating sleeve insertion/extraction auxiliary tool according to the embodiment. Fig. 5 is a diagram showing an example of the operation of the compensating sleeve insertion/extraction auxiliary tool according to the embodiment. The structure of the compensating sleeve insertion/extraction aid will be described below with reference to fig. 2 to 5 as appropriate.
The compensating sleeve insertion/extraction aid is configured to include a connecting member 18, a plate member 20, a fulcrum member 22, and an operating member 30.
The connection member 18 is a member for attaching the plate member 20 to the top surface 161 of the compensation sleeve 16 with a gap therebetween in the pulling-out direction. Typically, the connection member 18 is a connection bolt having a threaded portion 181 formed on one end side and a head portion 182 formed on the other end side. The screw portion 181 is a portion screwed into a screw hole 162 provided in the top surface 161 of the compensation sleeve 16. That is, the screw portion 181 has a screw diameter and a screw pitch that can be screwed into the screw hole 162. The head 182 is configured to have a larger diameter than the threaded portion 181. Examples of the connection bolt of the connection member 18 include a bolt of M6. The compensating sleeve insertion/extraction aid of the present embodiment includes two connecting bolts as the connecting members 18, but the number of connecting bolts may be one.
The plate member 20 is an L-shaped angle member having an active surface 202 and a grip surface 204 perpendicular to the active surface 202. The plate thickness of the plate member 20 is, for example, 3mm. Two through holes 206 are formed in the working surface 202. The two through holes 206 have a diameter larger than the diameter of the threaded portion 181 of the connection member 18 and smaller than the diameter of the head portion 182. In the case where the connection member 18 is a connection bolt of M6, the diameter of the through hole 206 is, for example, 7mm. The spacing between the two through holes 206 is the same as the spacing between the two threaded holes 162 provided in the top surface 161 of the compensation sleeve 16. The grip surface 204 is a portion for enabling a worker to grip the plate member 20 with his or her hand during work. The shape and size of the holding surface 204 are not limited. In addition, the holding surface 204 is not necessarily structured.
The two connection bolts serving as the connection members 18 are respectively screwed into the two screw holes 162 while being inserted into the two through holes 206 of the plate member 20. Thereby, the screw portion 181, which is one end side of the connecting member 18, is connected to the top surface 161 of the compensating sleeve 16, and the head portion 182, which is the other end side thereof, is connected to the plate member 20.
The plate member 20 is connected to the connection member 18 in an orientation where the action face 202 intersects the pull-out direction. A gap is formed between the active face 202 and the top surface 161 of the compensating sleeve 16. The connecting member 18 has a function of adjusting the width of the gap by adjusting the amount of screwing with the screw hole 162. Here, the gap is adjusted to a width that enables insertion of a distal end portion 304 of the operating member 30 described later.
The fulcrum member 22 is a member disposed so as to protrude in the extraction direction by screwing with a screw hole 104 provided in the housing mating surface 102. The threaded holes 104 can utilize threaded holes for mounting the housing 12. In this case, the fulcrum member 22 can use the mounting bolt 14 as a fulcrum bolt. The amount of engagement of the fulcrum member 22 is adjusted so that the amount of protrusion from the housing engagement surface 102 is equal to or greater than the height of the action surface 202 of the plate member 20 from the housing engagement surface 102. That is, the fulcrum member 22 has a function of adjusting the protruding amount from the housing mating surface 102.
The operating member 30 is a member that is directly operated by an operator at the time of the pulling-out operation of the compensation sleeve 16. The operating member 30 has a base end portion 302, a tip end portion 304, and an intermediate portion 306. The distal end portion 304 is a portion inserted into a gap between the active face portion 202 and the top surface 161 of the compensating sleeve 16. The intermediate portion 306 is a portion that contacts an end portion of the fulcrum member 22 protruding from the housing mating surface 102. The base end portion 302 is a portion directly operated by an operator. Such an operation member 30 can be, for example, a wrench. The length dimension of the operating member 30 is not limited. For example, the operating member 30 has a length such that the base end portion 302 extends to a position outside the outer edge portion of the housing mating surface 102.
3. Extraction procedure using compensating sleeve insertion and extraction aid
Next, the steps of the method for extracting the compensating sleeve 16 using the compensating sleeve insertion/extraction aid according to the embodiment will be described in detail.
Preparation step, cover removal step
As a preparation in advance, the operator removes the mounting bolts 14 and removes the housing 12 from the valve 10. Thereby, the housing mating surface 102 of the valve 10 and the top surface 161 of the compensating sleeve 16 are exposed.
First step, mounting step of the fulcrum member 22
In the first step of the operation, the operator screws the fulcrum member 22 into the screw hole 104 of the housing mating surface 102. The threaded holes 104 utilize threaded holes 104 near the center of the housing mating surface 102 of a plurality of threaded holes 104 disposed about the sleeve bore of the compensation sleeve 16.
Second step of mounting the plate member 20
In the second step of the operation, the operator uses the connection member 18 to attach the plate member 20 to the compensation sleeve 16. Here, the worker screws the connection member 18 into the screw hole 162 in a state where the connection member 18 is inserted into the through hole 206 of the plate member 20. At this time, the plate member 20 is connected to the connecting member 18 in an orientation in which the grip surface 204 is located on the opposite side of the fulcrum member 22 side with respect to the connecting member 18. The plate member 20 is connected to the connecting member 18 in a direction in which the grip surface 204 extends to the opposite side of the housing mating surface 102. The order of the first step and the second step is not limited.
Third step, adjustment step
In the third step of the operation, the operator adjusts the clearance between the action surface 202 of the plate member 20 and the top surface 161 of the compensation sleeve 16, and the protruding amount of the fulcrum member 22. Here, the worker adjusts the amount of engagement of the connecting member 18 so that the width of the gap between the action surface 202 of the plate member 20 and the top surface 161 of the compensation sleeve 16 is wider than the thickness of the distal end portion 304 of the operating member 30. The operator adjusts the amount of engagement of the fulcrum member 22 so that the amount of protrusion of the fulcrum member 22 is equal to or greater than the height of the action surface 202 of the plate member 20 from the housing engagement surface 102.
Fourth step, pulling-out step
In a fourth step of the operation, the operator pulls the compensating sleeve 16 out of the sleeve bore of the valve 10 using the operating member 30. Here, the operator holds the base end portion 302 of the operating member 30 with one hand, inserts the distal end portion 304 of the operating member 30 into the gap between the action surface portion 202 and the top surface 161 of the compensating sleeve 16, and brings the intermediate portion 306 into contact with the distal end portion of the fulcrum member 22. Then, the operator applies force to the base end 302 of the operating member 30 toward the housing engagement surface 102 of the valve 10 while holding the holding surface portion 204 of the plate member 20 with the other hand. Thus, the base end portion 302 of the operating member 30 functions as a force point of the lever, the intermediate portion 306 functions as a fulcrum of the lever, and the distal end portion functions as an action point of the lever. As a result, the action surface 202 of the plate member 20 is pulled up in the pulling-out direction, and the compensation sleeve 16 is pulled up in the pulling-out direction from the sleeve hole.
The amount of movement of the point of action of the lever is smaller than the amount of movement of the point of force. Therefore, even if the base end portion 302 is moved to the greatest extent possible, the compensation sleeve 16 is sometimes not completely pulled out of the sleeve hole. In this case, the operator again performs the adjustment step, and again adjusts the amount of engagement of the fulcrum member 22 so that the amount of protrusion of the fulcrum member 22 becomes equal to or greater than the height of the action surface 202 of the plate member 20 from the housing engaging surface 102. In this way, the compensation sleeve 16 is pulled out from the sleeve hole by alternately repeating the adjustment process and the pulling-out process as necessary. The operator replaces the various replacement components of the pulled-out compensation sleeve 16.
Fifth step, insertion step
In the fifth step of the operation, the operator inserts the compensation sleeve 16 into the sleeve hole of the valve 10 using the operation member 30. Here, the operator inserts the compensation sleeve 16 into the sleeve hole of the valve 10 while holding the holding surface portion 204 of the plate member 20 by hand.
4. Action and effect of compensating sleeve plug auxiliary tool
The sleeve insertion/removal aid described above can provide the following actions and effects.
The sleeve insertion/extraction aid can form a lever for pulling up the compensation sleeve 16 in the extraction direction by the connection member 18, the plate member 20, the fulcrum member 22, and the operation member 30. Thus, even the compensating sleeve 16 that is firmly pressed in can be pulled out with a small force. As a result, the burden on the operator is reduced.
The connecting member 18 includes a screw portion 181 and a head portion 182, and the screw portion 181 is screwed into a screw hole 162 provided in the compensation sleeve 16. According to such a configuration, by adjusting the amount of screwing of the screw portion 181, the size of the gap between the acting surface portion 202 of the plate member 20 and the top surface 161 of the compensation sleeve 16 can be adjusted according to the thickness of the distal end portion 304 of the operation member 30.
The sleeve insertion/extraction aid uses two connecting bolts as the connecting members 18 to connect the plate member 20 to the top surface of the compensation sleeve 16. This enables the plate member 20 to be reliably and stably connected.
The socket insertion/removal aid is connected to the connection member 18 in such a direction that the grip surface 204 of the plate member 20 extends to the opposite side of the housing mating surface 102. With this configuration, the operator in the work can easily grip the grip surface 204.
The socket insertion/extraction aid is connected to the connecting member 18 in such a direction that the grip surface 204 of the plate member 20 is located on the opposite side of the fulcrum member 22 with respect to the connecting member 18. With this configuration, even when the holding surface 204 is held, the action surface 202 serving as the action point is easily visible.
The socket insertion/removal aid is configured such that the operating member 30 is detachable. With this configuration, the operating member 30 can be prevented from being an obstacle when the plate member 20 and the fulcrum member 22 are connected.
The socket attachment/detachment assisting tool uses a fulcrum bolt screwed into a screw hole provided in the mating surface of the housing as the fulcrum member 22. According to this configuration, the amount of protrusion of the fulcrum member 22 can be adjusted by adjusting the amount of screwing.
The socket insertion/extraction aid uses a wrench as the operation member 30. According to this structure, the pulling-out operation of the compensating sleeve 16 can be performed without having a special tool.
The operating member 30 has a length such that the base end portion 302 is located outside the outer edge portion of the housing engagement surface 102. With this configuration, when the operator performs an operation of biasing the base end portion 302 toward the housing engagement surface 102, the operator can prevent the hand holding the base end portion 302 from coming into contact with the housing engagement surface 102.
Description of the reference numerals
10 Valve, 12 housing, 14 mounting bolt, 16 compensating sleeve, 18 connecting part, 20 plate part, 22 fulcrum part, 30 operating part, 102 housing mating surface, 104 threaded hole, 161 top surface, 162 threaded hole, 181 threaded part, 182 head, 202 acting face, 204 holding face, 206 through hole, 302 base end, 304 terminal end, 306 middle part.
Claims (11)
1. A compensating sleeve insertion and extraction aid for extracting a compensating sleeve from a sleeve hole provided in a housing mating surface of a valve of a hydraulic elevator, the compensating sleeve insertion and extraction aid comprising:
A connecting member having one end connected to the top surface of the compensation sleeve and the other end extending in the direction of pulling out the compensation sleeve;
A plate member connected to the other end side of the connecting member and having an action surface portion extending in a direction intersecting the pulling-out direction;
A fulcrum member provided to protrude from the housing engagement surface in the pull-out direction, and
And an operating member having a distal end portion as an action point and being in contact with the action surface portion of the plate member, an intermediate portion as a fulcrum and being in contact with the fulcrum member, and a base end portion as a force point and being operated by an operator.
2. The compensating sleeve insertion and extraction aid of claim 1 wherein,
The connecting member includes a connecting bolt having a threaded portion formed on one end side and a head portion having a larger diameter than the threaded portion formed on the other end side,
The connecting bolt is configured to enable the threaded portion to be screwed with a threaded hole provided in the top surface,
The plate member has a through hole having a larger diameter than the screw portion and smaller than the head portion in the working surface portion,
The connecting bolt is screwed with the threaded hole in a state of being inserted into the through hole, so that a gap is formed between the action face portion and the top face portion,
The gap is a width that enables insertion of the distal end portion of the operating member.
3. The compensating sleeve insertion and extraction aid of claim 2 wherein,
The connecting part comprises two connecting bolts,
The plate member has two through holes at the action surface portion at the same pitch as the two screw holes provided on the top surface.
4. A compensating sleeve insertion/extraction aid as claimed in any one of claims 1 to 3, wherein,
The plate member is an L-shaped member having a cross section of a holding surface portion perpendicular to the action surface portion,
The plate member is connected to the connecting member in a direction in which the holding surface portion extends to a side opposite to the housing mating surface side.
5. The compensating sleeve insertion and extraction aid of claim 4 wherein,
The plate member is connected to the connecting member in an orientation in which the grip surface portion is located on a side opposite to the fulcrum member side with respect to the connecting member.
6. The compensating sleeve insertion/extraction aid of any one of claims 1 to 5, wherein,
The operating member is configured to be detachable.
7. The compensating sleeve insertion/extraction aid as claimed in any one of claims 1 to 6, wherein,
The fulcrum member includes a fulcrum bolt screwed into a screw hole provided in the mating surface of the housing.
8. The compensating sleeve insertion/extraction aid according to any one of claims 1 to 7, wherein,
The operating member is a wrench.
9. The compensating sleeve insertion and extraction aid of any one of claims 1 to 8, wherein,
The operating member has a length such that the base end portion is located outside an outer edge portion of the housing mating surface.
10. A compensating sleeve pulling-out method for pulling out a compensating sleeve from a sleeve hole provided in a housing mating surface of a valve of a hydraulic elevator using a compensating sleeve pulling-out auxiliary tool including a bolt for a fulcrum, a bolt for connection having a threaded portion formed on one end side and a head portion having a larger diameter than the threaded portion formed on the other end side, a plate member having an action surface portion formed with a through hole having a larger diameter than the threaded portion and smaller than the head portion, and an operating member operated by an operator, wherein the compensating sleeve pulling-out method includes:
A first step of screwing the fulcrum bolt into a screw hole provided in the mating surface of the housing;
a second step of screwing the connecting bolt into a screw hole provided in the top surface of the compensation sleeve in a state of being inserted into the through hole, so that a gap is formed between the acting surface portion and the top surface;
a third step of adjusting the amount of the bolt for supporting the point and the bolt for connecting, and
And a fourth step of bringing the distal end portion into contact with the action surface portion of the plate member with the distal end portion as an action point, bringing the intermediate portion into contact with the fulcrum bolt with the intermediate portion as a fulcrum, and applying a force to the base end portion toward the housing engagement surface with the base end portion as a force point.
11. The method of extracting a compensating sleeve of claim 10, wherein,
The third process includes the following steps:
Adjusting the amount of the connecting bolt so that the gap becomes a width that enables the distal end portion of the operating member to be inserted, and
The amount of the connection bolt is adjusted so that the amount of the protrusion of the fulcrum bolt is equal to or greater than the height of the action surface portion of the plate member from the housing mating surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/040911 WO2024095370A1 (en) | 2022-11-01 | 2022-11-01 | Compensation sleeve insertion/extraction assisting tool and method for extracting compensation sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120077001A true CN120077001A (en) | 2025-05-30 |
Family
ID=90930063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280101197.0A Pending CN120077001A (en) | 2022-11-01 | 2022-11-01 | Compensating sleeve inserting and extracting auxiliary tool and compensating sleeve extracting method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7677550B2 (en) |
| CN (1) | CN120077001A (en) |
| WO (1) | WO2024095370A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0588876U (en) * | 1992-05-26 | 1993-12-03 | 富士重工業株式会社 | Bearing pulling device |
| CN1175493A (en) * | 1996-04-24 | 1998-03-11 | 科兰工具有限公司 | Extruding device for shaft bearing hinge and/or cross brace head |
| CN205271923U (en) * | 2015-12-26 | 2016-06-01 | 孙志远 | Multi -functional nail pulling instrument |
| CN114243410A (en) * | 2021-12-16 | 2022-03-25 | 广西电网有限责任公司梧州供电局 | Novel connect ground connection stake to pull out device |
| TWI780001B (en) * | 2022-02-09 | 2022-10-01 | 鈴木計芳 | Tooth extraction aids and tooth extraction kits |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6397447B1 (en) * | 1999-10-02 | 2002-06-04 | Scott Christopherson | Shaft seal puller tool |
| JP2003240147A (en) * | 2002-02-15 | 2003-08-27 | Hitachi Building Systems Co Ltd | Extraction method and extraction device for relief valve for hydraulic elevator control valve |
| US8490263B2 (en) * | 2008-08-28 | 2013-07-23 | Whitaker Tools, Inc. | Injector sleeve removal tool |
| JP5918688B2 (en) * | 2012-12-11 | 2016-05-18 | 川崎重工業株式会社 | Variable displacement pump regulator |
| JP2017177235A (en) * | 2016-03-28 | 2017-10-05 | 株式会社日立ビルシステム | Oil seal detachment tool |
| JP2021130526A (en) * | 2020-02-18 | 2021-09-09 | 三菱電機ビルテクノサービス株式会社 | Insertion/extraction implement for support pin of brake |
-
2022
- 2022-11-01 CN CN202280101197.0A patent/CN120077001A/en active Pending
- 2022-11-01 WO PCT/JP2022/040911 patent/WO2024095370A1/en not_active Ceased
- 2022-11-01 JP JP2024553987A patent/JP7677550B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0588876U (en) * | 1992-05-26 | 1993-12-03 | 富士重工業株式会社 | Bearing pulling device |
| CN1175493A (en) * | 1996-04-24 | 1998-03-11 | 科兰工具有限公司 | Extruding device for shaft bearing hinge and/or cross brace head |
| CN205271923U (en) * | 2015-12-26 | 2016-06-01 | 孙志远 | Multi -functional nail pulling instrument |
| CN114243410A (en) * | 2021-12-16 | 2022-03-25 | 广西电网有限责任公司梧州供电局 | Novel connect ground connection stake to pull out device |
| TWI780001B (en) * | 2022-02-09 | 2022-10-01 | 鈴木計芳 | Tooth extraction aids and tooth extraction kits |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7677550B2 (en) | 2025-05-15 |
| JPWO2024095370A1 (en) | 2024-05-10 |
| WO2024095370A1 (en) | 2024-05-10 |
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