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CN-120077001-B - Compensating sleeve inserting and extracting auxiliary tool and compensating sleeve extracting method

CN120077001BCN 120077001 BCN120077001 BCN 120077001BCN-120077001-B

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.

Inventors

  • YOSHINO NOBUYUKI

Assignees

  • 三菱电机楼宇解决方案株式会社

Dates

Publication Date
20260512
Application Date
20221101

Claims (9)

  1. 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 An operation member having a distal end portion as an action point and contacting the action 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 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.
  2. 2. The compensating sleeve insertion and extraction aid of claim 1 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.
  3. 3. The compensating sleeve insertion and extraction aid according to claim 1 or 2, 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.
  4. 4. The compensating sleeve insertion/extraction aid of claim 3 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.
  5. 5. The compensating sleeve insertion and extraction aid of claim 1 wherein, The operating member is configured to be detachable.
  6. 6. The compensating sleeve insertion and extraction aid of claim 1 wherein, The fulcrum member includes a fulcrum bolt screwed into a screw hole provided in the mating surface of the housing.
  7. 7. The compensating sleeve insertion and extraction aid of claim 1 wherein, The operating member is a wrench.
  8. 8. The compensating sleeve insertion and extraction aid of claim 1 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.
  9. 9. 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 A fourth step of bringing a distal end portion into contact with the action surface portion of the plate member with the distal end portion as an action point, bringing an intermediate portion into contact with the fulcrum bolt with an intermediate portion as a fulcrum, and applying a force to the base end portion toward the housing engagement surface with a base end portion as a force point, 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.

Description

Compensating sleeve inserting and extracting auxiliary tool and compensating sleeve extracting method 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 val