EP1884492A1

EP1884492A1 - Rope socketing device for elevator

Info

Publication number: EP1884492A1
Application number: EP05743268A
Authority: EP
Inventors: Atsushi; c/o Mitsubishi Denki Kabushiki Kaisha MITSUI
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-05-27
Filing date: 2005-05-27
Publication date: 2008-02-06
Also published as: WO2006126276A1; JPWO2006126276A1; CN101010251A; EP1884492A4; CN100564221C

Abstract

Provided is an elevator rope socketing device including a rope grasping member for grasping a rope and a grasping member displacing device for displacing the rope grasping member away from a socket. The grasping member displacing device has a screw rod threadedly engaged with the rope grasping member. The screw rod is displaced with respect to the rope grasping member by being turned. The screw rod displaced with respect to the rope grasping member is received by the socket, whereby the rope grasping member is displaced away from the socket. A terminal portion of the rope is drawn into a rope passing hole provided in the socket through the displacement of the rope grasping member away from the socket.

Description

TECHNICAL FIELD

The present invention relates to an elevator rope socketing device for drawing a terminal of a rope into a socket in order to connect the socket and the rope inserted into the socket with each other.

BACKGROUND ART

A socket must be attached beforehand to an elevator rope terminal for connection, for example, to a car or a counterweight. Usually, the operation of attaching the socket to the rope terminal is called socketing. In socketnig, the rope inserted into the socket is drawn in to introduce the rope terminal deep into the socket.
Up to now, there has been proposed a wire rope socketing jig device which draws a rope grasping jig grasping a rope with a drawing operation device in order to draw the rope terminal into the socket. Fixed in position on a machine stage on which the drawing operation device is placed are a socket fixing jig for fixing a socket in position and a rack gear to be engaged with a pinion gear in the drawing operation device. The drawing operation device moves on the machine stage along the rack gear by rotating the pinion gear. By moving the drawing operation device and drawing the rope grasping jig, the rope terminal is drawn into the socket (see Patent Document 1).
Patent Document: JP 2003-227084 A

DISCLOSURE OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

However, in the conventional wire rope socketing jig device, it is necessary to provide a drawing operation device or the like having a gear mechanism, resulting in a rather complicated construction. Further, the device itself becomes large.
The present invention has been made with a view toward solving the above-mentioned problems. It is an obj ect of the present invention to provide an elevator rope socketing device making it possible to achieve simplification in construction and a reduction in size.

MEANS FOR SOLVING THE PROBLEM

According to the present invention, an elevator rope socketing device for drawing a terminal portion of a rope into a rope passing hole in order to effect connection between a socket in which the rope passing hole is provided and the rope passed through the rope passing hole, includes: a rope grasping member for grasping the rope; and a grasping member displacing device which has a screw rod threadedly engaged with the rope grasping member and adapted to be displaced with respect to the rope grasping member by being turned, the screw rod displaced with respect to the rope grasping member being received by the socket to thereby displace the rope graspingmember away from the socket. The grasping member displacing device draws the terminal portion of the rope into the rope passing hole by displacing the rope grasping member away from the socket.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of an elevator rope socketing device according to Embodiment 1 of the present invention.
Fig. 2 is a front view of the elevator rope socketing device when the connection of the rope and the rope fastener of Fig. 1 is being effected.
Fig. 3 is a sectional view taken along the line III-III of Fig. 1.
Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1.
Fig. 5 is a side view of an elevator rope socketing device according to Embodiment 2 of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

In the following, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

Fig. 1 is a front view of an elevator rope socketing device according to Embodiment 1 of the present invention. Fig. 1 is a front view of an elevator rope socketing device when the connection of a rope and a rope fastener has been completed. Fig. 2 is a front view of the elevator rope socketing device when the connection of the rope 5 and the rope fastener 1 of Fig. 1 is being effected. In the drawings, the rope fastener 1 has a socket 3 and a bar-like rod 2 extending from the socket 3. Provided at the end of the extending rod 2 is a screw portion 4 for fixation, for example, to a car, a counterweight, etc.
The socket 3 is provided with a rope passing hole 6 through which the rope 5 is passed. The rope passing hole 6 has a rope side opening 6a provided at the forward end of the socket 3 (i.e., the end of the socket 3 on the opposite side of the rod 2) and a rod side opening 6b provided in the middle portion of the socket 3. The inner diameter of the rope passing hole 6 is minimum at the forward end of the socket 3, and increases continuously toward the rod 2. That is, the inner diameter of the rope side opening 6a is smaller than the rod side opening 6b.
A wedge 7 is inserted into the rope passing hole 6 at the rod side opening 6b. A groove 8 is provided in the outer periphery of the wedge 7. The rope 5 is reversed by being wound around the wedge 7 along the groove 8.
The rope 5 has a main body portion 5a, a terminal portion 5b continuous with the main body portion 5a and wound around the wedge 7, and a return portion 5c continuous with the terminal end portion 5b and returning in the opposite direction through reversal by the wedge 7.
The rope 5 is inserted into the rope passing hole 6 at the rope side opening 6a, reversed by the wedge 7, and then drawn to the exterior of the socket 3 from the rope side opening 6a. That is, the main body portion 5a and the return portion 5c are drawn out of the socket 3 from the common rope side opening 6a.
By drawing the main body portion 5a and the return portion 5c away from the socket 3, the terminal portion 5b of the rope 5 is drawn into the rope passing hole 6 while wound around the wedge 7. Further, when drawn into the rope passing hole 6, the terminal portion 5b of the rope 5 is engaged between the inner surface of the rope passing hole 6 and the wedge 7.
In order to draw the terminal portion 5b into the rope passing hole 6, an elevator rope socketing device (hereinafter referred to simply as "socketing device") 9 is attached to the rope 5. The socketing device 9 has a rope grasping member 10 for grasping the rope 5, and a grasping member displacing device 11 for displacing the rope grasping member 10 away from the socket 3.
The rope grasping member 10 collectively grasps the main body portion 5a and the return portion 5c of the rope 5 drawn out of the rope side opening 6a. The grasping member displacing device 11 has a plurality of (two, in this example) screw rods (i.e., jack-up bolts) 12 threadedly engaged with the rope grasping member 10, and a block member 13 arranged between the rope grasping member 10 and the socket 3 and abutted by the screw rods 12.
The screw rods 12 extend through the rope grasping member 10. Further, by being turned, the screw rods 12 are displaced with respect to the rope grasping member 10 toward and away from the socket 3. The screw rods 12 extend in the direction in which they are displaced with respect to the rope grasping member 10. The screw rods 12 are arranged parallel to each other.
The block member 13 is held between the screw rods 12 and the socket 3. Further, the block member 13 is in contact with the forward end portion of the socket 3. The block member 13 is provided with a screw rod contact surface 13a to be held in contact with the screw rods 12 and a socket contact surface 13b to be held in contact with the socket 3. The screw rod contact surface 13a and the socket contact surface 13b are parallel to each other. The block member 13 is provided with a block member through-hole 14 extending through the block member 13 between the screw rod contact surface 13a and the socket contact surface 13b. The main body portion 5a and the return portion 5c of the rope 5 are loosely passed through the block member through-hole 14.
The screw rods 12, which are displaced with respect to the rope grasping member 10, are received by the socket 3 through the intermediation of the block member 13, whereby the grasping member displacing device 11 displaces the rope grasping member 10 away from the socket 3. That is, the grasping member displacing device 11 regulates the displacement of the screw rods 12 and the block member 13 toward the socket 3 with respect to the rope grasping member 10 by the socket 3, thereby displacing the rope grasping member 10 away from the socket 3.
Fig. 3 is a sectional view taken along the line III-III of Fig. 1. In the drawing, the rope grasping member 10 has a pair of holding members 15 and 16 collectively holding the main body portion 5a and the return portion 5c of the rope 5, and a plurality of fastening devices 17 fastening the holding members 15 and 16 to each other. The rope grasping member 10 grasps the main body portion 5a and the return portion 5c of the rope 5 by the fastening force of the fastening devices 17 exerted on the holding members 15 and 16.
In the portions of the holding members 15 and 16 in which they are opposed to each other, there are provided rope retaining grooves 18 and 19 parallel to the threadedly engaged screw rods 12. The main body portion 5a and the return portion 5c of the rope 5 are held between the holding members 15 and 16 while being inserted in the rope retaining grooves 18 and 19. The main body portion 5a and the return portion 5c are in contact with each other while they are held between the holding members 15 and 16. The depths of the rope retaining grooves 18 and 19 are smaller than the diameter of the main body portion 5a and the return portion 5c, respectively. The main body portion 5a and the return portion 5c are pressed against each other within the rope retaining grooves 18 and 19 by the fastening force exerted on the holding members 15 and 16 by the fastening devices 17. This helps to prevent slippage of the main body portion 5a and the return portion 5c with respect to the rope grasping member 10.
The fastening devices 17 have passing bolts 20 passed through the holding members 15 and 16 and nuts 21 threadedly engaged with the passing bolts 20. The passing bolts 20 are passed through the portions of the holding members 15 and 16 other than the rope retaining grooves 18 and 19. Regarding the nuts 21, a double-nut structure is adopted for each passing bolt 20 in order to prevent looseness with respect to the passing bolts 20. By fastening the nuts 21 threadedly engaged with the passing bolts 20, the fastening devices 17 displace the holding members 15 and 16 toward each other, and fasten the holding members 15 and 16 to each other.
Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1. In the drawing, the block member 13 has a plurality of (two, in this example) division members 22 and 23, and a plurality of fastening devices 24 fastening the division members 22 and 23 to each other.
The division members 22 and 23 are provided with through- hole grooves 25 and 26. The block member through-hole 14 is formed by combining the division members 22 and 23 with each other and opposing the through- hole grooves 25 and 26 to each other.
The fastening devices 24 have passing bolts 27 passed through the division members 22 and 23, and nuts 28 threadedly engaged with the passing bolts 27. The passing bolts 27 are passed through the portions of the division members 22 and 23 other than the through- hole grooves 25 and 26. Regarding the nuts 28, a double-nut structure is adopted for each passing bolt 27 in order to prevent looseness with respect to the passing bolts 27. By fastening the nuts 28 threadedly engaged with the passing bolts 27, the fastening devices 24 fasten the division members 22 and 23.
Next, the procedures for drawing the rope 5 into the rope passing hole 6 will be described. First, the rope 5 is inserted into the rope passing hole 6 at the rope side opening 6a, and the inserted rope 5 is drawn out of the rod side opening 6b. Then, the rope 5 is wound around the wedge 7 along the groove 8, and the rope 5 is reversed. After that, the reversed rope 5 is inserted into the rope passing hole 6 at the rod side opening 6b, and the inserted rope 5 is drawn out of the rope side opening 6a.
After that, the portions of the rope 5 drawn out of the rope side opening 6a, that is, the main body portion 5a and the return portion 5c of the rope 5, are held collectively between the holding members 15 and 16, and the holding members 15 and 16 are fastened together by the passing bolts 20 and the nuts 21. That is, the main body portion 5a and the return portion 5c of the rope 5 are collectively grasped by the rope grasping member 10.
After that, the division members 22 and 23 are combined with each other such that the portions of the rope 5 between the rope grasping member 10 and the socket 3 are arranged in the through- hole grooves 25 and 26, and the division members 22 and 23 are fastened together by the passing bolts 27 and the nuts 28. That is, the block member 13 is assembled such that the portions of the rope 5 between the rope grasping member 10 and the socket 3 pass through the block member through-hole 14. Then, the socket contact surface 13b of the block member 13 is brought into contact with the forward end portion of the socket 3. After that, the screw rods 12 are turned to bring the screw rods 12 into contact with the screw rod contact surface 13a of the block member 13 (refer to Fig. 2).
After that, with the screw rods 12 held in contact with the block member 13, the screw rods 12 are further turned by a tool such as a spanner. This causes the rope grasping member 10 to be displaced away from the socket 3. As a result, the terminal portion 5b of the rope 5 is drawn into the rope passing hole 6 together with the wedge 7 through the rod side opening 6b, and is engaged between the inner surface of the rope passing hole 6 and the wedge 7 (refer to Fig. 1).
After that, by procedures reverse to the ones described above, the block member 13, the rope grasping member 10, and the screw rods 12 are detached from the rope 5, whereby the operation of drawing the terminal portion 5b of the rope 5 into the rope passing hole 6 is completed.
In this socketing device 9, the rope 5 is grasped by the rope grasping member 10, the screw rods 12 are threadedly engaged with the rope grasping member 10, and the screw rods 12 displaced with respect to the rope grasping member 10 are received by the socket 3, whereby the rope grasping member 10 is displaced away from the socket 3, so it is possible to avoid use of a complicated mechanism such as a gear mechanism, making it possible to simplify the structure of the socketing device 9. Further, it is possible to achieve a reduction in the size of the socketing device 9.
Further, the screw rods 12 displaced with respect to the rope grasping member 10 is received by the socket 3 through the intermediation of the block member 13, so even when, for example, sufficient space for causing the screw rods 12 to abut is not provided at the forward end of the socket 3, it is possible to cause the screw rods 12 to abut the block member 13, making it possible to regulate the displacement of the screw rods 12 with respect to the socket 3.
Further, the block member 13 has a plurality of division members 22 and 23 forming the block member through-hole 14 by being combined with each other, so even when the rope 5 is passed through the block member through-hole 14, it is possible to easily detach the block member 13 by dividing the block member 13.

Embodiment 2

While in the above-mentioned example the rope grasping member 10 only grasps a single rope 5, it is also possible to use, as the rope grasping member, a rope cleat for collectively grasping a plurality of ropes 5 separate from each other.
That is, Fig. 5 is a side view of an elevator rope socketing device according to Embodiment 2 of the present invention. In the drawing, an elevator rope socketing device 31 has a rope cleat 32, which is a rope grasping member for collectively grasping a plurality of ropes 5 separate from each other, and a grasping member displacing device 33 for displacing the rope cleat 32 away from the socket 3.
The rope cleat 32 has a pair of holding members 34 for holding the ropes 5, and a plurality of fastening devices 35 for fastening the holding members 34 to each other. The rope cleat 32 grasps the ropes 5 by the fastening force exerted on the holding members 34 by the fastening devices 35. The fastening devices 35 are of the same structure as the fastening devices 17 of Embodiment 1.
In the portions of the holding members 34 in which they are opposed to each other, there are provided a plurality of rope retaining grooves 36. The rope retaining grooves 36 are of the same structure as the rope retaining grooves 18 and 19 of Embodiment 1. The main body portions 5a and the return portions 5c of the ropes 5 are inserted into the rope retaining grooves 36 and, in this state, are held between the holding members 34 in the same manner as in Embodiment 1. Due to this arrangement, detachment of the main body portions 5a and the return portions 5c from the rope retaining grooves 36 is prevented.
The grasping member displacing device 33 is of the same construction as the grasping member displacing device 11 of Embodiment 1. That is, the grasping member displacing device 33 has a plurality of screw rods 12 threadedly engaged with the rope cleat 32, and a block member 13 which is arranged between the rope cleat 32 and the sockets 3 and with which each screw rod 12 is brought into contact. The grasping member displacing device 33 displaces the rope cleat 32 away from the sockets 3, whereby the terminal end portions 5b are drawn into the sockets 3.
The block member 13 is brought into contact with the forward end portion of each socket 3 into which the terminal end portion 5b of each rope 5 is to be drawn. Each screw rod 12 is threadedly engaged with the rope cleat 32 so as to abut the block member 13. By turning each screw rod 12 with each screw rod 12 being held in contact with the blockmember 13, the rope cleat 32 is displaced away from the socket 3. Other than the points described above, this embodiment is of the same construction as Embodiment 1.
Next, the procedures for drawing the ropes 5 into the sockets 3 will be described. First, as in Embodiment 1, each rope 5 is passed through each socket 3, and for each socket 3, the main body portion 5a and the return portion 5c of each rope 5 are drawn out of the rope side opening 6a. After that, the main body portions 5a and the return portions 5c of the ropes 5 are collectively grasped by the rope cleat 32. At this time, the rope cleat 32 is threadedly engaged with the screw rods 12.
After that, the block member 13 is assembled between the rope cleat 32 and the sockets 3 so that any one of the ropes 5 is passed through the block member through-hole 14, and then the block member 13 is brought into contact with the forward end portion of the socket 3. After that, each screw rod 12 threadedly engaged with the rope cleat 32 is turned to bring each screw rod 12 into contact with the block member 13.
After that, as in Embodiment 1, each screw rod 12 is further turned, and the terminal portion 5b of each rope 5 is drawn into each socket 3. After that, by procedures reverse to the above, the block member 13 is divided and detached from the rope 5, and each screw rod 12 is detached from the rope cleat 32.
After that, the position in the rope cleat 32 where each screw rod 12 is threadedly engaged is changed, and the terminal portion 5b of a rope 5 of which the terminal portion 5b has not been drawn in yet is drawn into a socket 3 by the same procedures as described above. In this way, the terminal portions 5b of the ropes 5 are drawn one by one into the sockets 3, thus drawing the terminal portions 5b of all the ropes 5 into the sockets 3.
After that, the screw rods 12 are detached from the rope cleat 32, and the block member 13 is detached from the ropes 5, whereby the operation of drawing the ropes 5 into the sockets 3 is completed.
In this elevator rope socketing device 31, the rope cleat 32, which collectively grasps a plurality of ropes 5 separate from each other, constitutes the rope grasping member, so there is no need to separately prepare a rope grasping member solely for the purpose of drawing the ropes 5 into the sockets 3, thereby achieving a further reduction in the number of components.
While in the above-mentioned embodiments the block member 13 has a plurality of division members 22 and 23, it is also possible to form the block member integrally without dividing it. This helps to reduce the number of components forming the block member 13, thereby achieving a reduction in cost. In this case, after the rope 5 is grasped by the rope grasping member, it is impossible to pass the rope 5 through the block member through-hole 14, so the rope 5 is passed through the block member through-hole 14 before being grasped by the rope grasping member.
Further, while in the above-mentioned embodiments the block member 13 is detached from the rope 5 after the rope 5 is drawn into the socket 3, it is possible for the block member 13 to be detached from the rope 5 or left in contact with the forward end portion of the socket 3 after the rope 5 is drawn into the socket 3.
Further, while in the above-mentioned embodiments the screw rods 12 are in contact with the block member 13, and the socket 3 receives the screw rods 12 displaced with respect to the rope grasping member through the intermediation of the block member 13, it is also possible for the screw rods 12 to be brought into direct contact with the forward end portion of the socket 3 if there is provided at the forward end of the socket 3 a space allowing the screw rods 12 to be brought into contact therewith. This makes it possible to eliminate the block member 13, thus achieving a further reduction in the number of components. Further, this helps to further facilitate the operation of drawing the rope 5 into the socket 3.
Further, while in the above-mentioned embodiments the socket 3 connected to the rope 5 is a wedge type socket in which the terminal portion 5b of the rope 5 is engaged between the inner surface of the rope passing hole 6 and the wedge 7, it is also possible to adopt a babbit type socket into which the terminal portion of a rope formed by turning up each strand is drawn. In this case, the rope is disentangled into a plurality of strands after being passed through the socket, and each strand is turned up to form the terminal portion. Further, in order that the terminal portion may be drawn into the socket, the rope grasping member is attached to the portion of the rope drawn out of the socket.

Claims

An elevator rope socketing device for drawing a terminal portion of a rope into a rope passing hole in order to effect connection between a socket in which the rope passing hole is provided and the rope passed through the rope passing hole, comprising:
a rope grasping member for grasping the rope; and

a grasping member displacing device which has a screw rod threadedly engaged with the rope grasping member and adapted to be displaced with respect to the rope grasping member by being turned, the screw rod displaced with respect to the rope grasping member being received by the socket to thereby displace the rope grasping member away from the socket,
characterized in that the grasping member displacing device draws the terminal portion of the rope into the rope passing hole by displacing the rope grasping member away from the socket.
The elevator rope socketing device according to Claim 1, characterized in that:
the grasping member displacing device further comprises a block member arranged between the socket and the rope grasping member and held in contact with the socket; and

the socket receives the screw rod displaced with respect to the rope grasping member through an intermediation of the block member.
The elevator rope socketing device according to Claim 1 or 2, characterized in that:
the block member is provided with a block member through-hole through which the rope is passed; and

the block member has a plurality of division members forming the block member through-hole by being combined with each other.
The elevator rope socketing device according to any one of Claims 1 through 3, characterized in that the rope grasping member is a rope cleat for collectively grasping a plurality of ropes separate from each other.