KR20210056640A - Bolt-assembled termination device - Google Patents

Abstract

The present invention relates to a bolt assembly type belt end fixing device. More specifically, the belt end fixing device has a pad disposed on the inner wall of a socket fixedly coupled by a bolt to form the thickness of a socket wall, so as to reduce the manufacturing costs compared to the conventional cast socket, form a sufficient thickness to increase the load carrying capacity of the socket, prevent residual deformation caused by conventional welding and weakening of strength due to the same, and provide adequate tolerances.

Description

Bolt-assembled termination device

The present invention relates to a bolt assembly type belt end fixing device, and more particularly, a pad disposed on an inner wall of a socket to form a thickness of the socket wall is fixedly coupled by a bolt, thereby reducing manufacturing cost compared to a conventional cast socket. The present invention relates to a belt end fixing device capable of forming a sufficient thickness to increase the load carrying capacity of the socket, preventing residual deformation due to conventional welding and weakening of the strength thereof, and providing an appropriate tolerance.

In general, the elevator system is provided with a car serving as a vehicle, a counterweight to compensate the weight of the car and passengers, a driving rope connecting the vehicle and the counterweight, and a traction sheave on which the driving rope is wound, and rotating the traction sheave to generate traction for the car. It includes a hoisting machine.

In addition, as a conventional driving rope, a driving rope formed of twisted or twisted steel wire is used. This driving rope must have a wide cross-sectional area in order to have sufficient strength and is manufactured with a thick diameter for this purpose. However, this leads to a decrease in the flexibility of the driving rope, and a traction sheave having a large diameter is required in order to wind the driving rope with reduced flexibility. As the diameter of the traction sheave increases, the efficiency of the traction machine decreases. The problem arises in terms of efficiency.

In order to solve this problem, in recent years, a planar drive belt consisting of a core arranged to form a transverse row and a cushioning member coating the arranged cores has been used in place of the conventional driving rope. Such a driving belt is sufficient. In order to have strength, even if the cross-sectional area is formed to be wide, it can have excellent flexibility compared to the conventional driving rope, and thus there is an advantage that it can be wound even on a sheave having a relatively small diameter.

On the other hand, as an end fixing means for connecting and fixing the ends of the drive belt described above, a wedge on which the drive belt is wound and a socket for receiving the wedge are provided on the circumferential surface, and when the drive belt is received in the socket while being wound on the wedge , A wedge-type end fixing device is used to fix the drive belt interposed between the inner surface of the socket and the circumferential surface of the wedge by pressure and friction, and as a conventional wedge-type end fixing device, a cast-type end fixing device and Sheet welding type end fixing devices are generally used.

Among them, the cast-type end fixing device includes a cast socket and a wedge arrangement, and the casting process is relatively expensive in a manner in which a part of the belt is fixed between the cast socket and the wedge. There is a disadvantage in that the integrated characteristic of the cast socket limits the access to the mating surface of the belt in the cast socket, and it is difficult to obtain an appropriate tolerance between the wedge and the socket surface for a uniform load distribution.

In addition, the end fixing device of the sheet welding method generally includes two sheet metals and wedges that are bent in a U-shape, and the sheet metal is welded together with a dovetail joint to form a socket. The end fixing device of the sheet welding method has the advantage of being relatively inexpensive compared to the casting socket, but the thickness of the sheet metal is limited for bending, so it cannot form a sufficient thickness to increase the load carrying capacity of the socket, and residual deformation during excessive welding. There is a concern that the strength may become weak due to this occurrence, and there is a disadvantage in that it is difficult to obtain an appropriate tolerance.

Korean Patent Registration No. 10-0826423 (2008.04.23)

The present invention is to solve the problems of the prior art mentioned above, and an object of the present invention is to fix the pad disposed on the inner wall of the socket by bolts to form the thickness of the socket wall. In comparison, a belt end fixing device capable of reducing manufacturing cost and forming a sufficient thickness to increase the load carrying capacity of the socket, preventing residual deformation due to conventional welding and weakening of strength due to it, and providing appropriate tolerances. Is to provide.

Another object of the present invention is that the socket is bisected and formed to be assembled/disassembled, and the divided socket is coupled to the pad by a bolt to fix the assembly state, so that the belt is released and assembled for maintenance after a load is applied. This is to provide a belt end fixing device that can be easily.

Another object of the present invention is to ensure that the lower end of the inclined pad is fixed to the socket while the lower end of the inclined pad is positioned above the lower end of the vertical pad, so that the tensile force concentration point at which the tension applied to the belt from the inside of the socket is concentrated moves upward. Thus, it is to provide a belt end fixing device that can be induced so that the compressive force applied to the belt by the wedge and the pad is distributed to the upper end.

Another object of the present invention is that the vertical pad and the inclined pad are formed so that the separation distance from the vertical wall or the inclined wall can be adjusted according to the degree of tightening of the bolt, and the vertical pad and the inclined pad are unit vertical pads and unit inclined pads. It is divided into pads, and each unit vertical pad and unit inclined pad are individually fixed by bolts, so that a plurality of tensile force concentration points can be formed, thereby providing a belt end fixing device capable of dispersing the compressive force applied to the belt by the wedge and pad. To provide.

In the bolt assembly type belt end fixing device according to an embodiment of the present invention, a receiving space is formed therein, and a belt through hole is formed at one end to allow a drive belt to pass therethrough, and vertical walls and vertical walls are formed on both sides of the belt through hole. A socket formed such that an inclined wall is formed, and an interval between the vertical wall and the inclined wall becomes smaller as the belt through hole approaches, a vertical pad disposed on the inner wall of the vertical wall, and an inclined pad disposed on the inner wall of the inclined wall, A wedge that is movably accommodated in the socket and has a circumferential surface so that the driving belt is wound, and the circumferential surface is formed to increase the close pressing force by the pad as it moves closer to the socket belt through hole, and a vertical pad and an inclined pad. Includes bolts that secure it to the socket.

In this case, the socket may be formed to be assembled/disassembled by dividing the vertical wall and the inclined wall to be bisected along the width direction of the drive belt.

In addition, the divided socket may be coupled to the vertical pad and the inclined pad by bolts so that the assembled state may be fixed.

In addition, the inclined pad may be fixed to the socket in a state in which the lower end is positioned above the lower end of the vertical pad.

In addition, the vertical pad and the inclined pad may be spaced apart from the vertical wall or the inclined wall according to the degree of tightening of the bolt.

In addition, the socket has a bolt through hole through which the bolt passes through the vertical wall and the inclined wall,

A bolt insertion groove into which a bolt is inserted may be formed in the vertical pad and the inclined pad.

In addition, a plurality of bolt through holes are formed to be spaced apart along the vertical direction, and a plurality of bolt insertion holes are formed to be spaced apart along the vertical direction corresponding to the bolt through holes, and a plurality of bolts inserted and fastened into the bolt through holes and the bolt insertion holes. By adjusting the degree of tightening of the bolt at a specific position among the vertical pads and the inclined pad, the close pressing force of the vertical pad and the inclined pad to the driving belt can be partially adjusted for each area.

In addition, the length of the bolt may be formed to be longer than the sum of the depth of the bolt through hole and the depth of the bolt insertion groove.

In addition, the vertical pad is divided into two or more unit vertical pads, the inclined pad is divided into two or more unit inclined pads, and each of the unit vertical pads and the unit inclined pads may be individually fixed by bolts.

In addition, the unit vertical pad and the unit inclined pad may have rounded corners of a contact surface contacting the driving belt.

According to the present invention, the pad disposed on the inner wall of the socket is fixedly coupled by bolts to form the thickness of the socket wall, thereby reducing manufacturing cost compared to the conventional cast socket and providing a sufficient thickness to increase the load carrying capacity of the socket. It is possible to form, and there is an effect of preventing residual deformation and weakening of strength due to conventional welding and providing an appropriate tolerance.

In addition, the socket is bisected so that it can be assembled/disassembled, and the divided socket is joined to the pad by bolts and the assembled state is fixed, so that it is easy to release and assemble for maintenance after a load is applied to the belt. have.

In addition, by fixing the lower end of the inclined pad to the socket in a state that is positioned above the lower end of the vertical pad, the tensile force concentration point at which the tension applied to the belt from the inside of the socket is concentrated moves upward, and the wedge and pad are applied to the belt. There is an effect that can be induced so that the applied compressive force is distributed to the top.

In addition, the vertical pad and the inclined pad are formed so that the separation distance from the vertical wall or the inclined wall can be adjusted according to the degree of tightening of the bolt, and the vertical pad and the inclined pad are divided into a unit vertical pad and a unit inclined pad. Since the vertical pads and the unit inclined pads are individually fixed by bolts, a plurality of tensile force concentration points may be formed, so that the compressive force applied to the belt by the wedges and pads may be dispersed.

1 is a view schematically showing a state in which a belt is fixed to a bolt assembly type belt end fixing device according to an embodiment of the present invention.
2 is a view showing a cross-sectional view of a state in which the belt is fixed to the bolt assembly type belt end fixing device according to an embodiment of the present invention.
3 is a view showing an exploded state of the bolt assembly type belt end fixing device according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a comparison of a height difference between a vertical pad and an inclined pad according to an exemplary embodiment of the present invention.
5 is a diagram illustrating a state in which a vertical pad is divided into unit vertical pads according to an embodiment of the present invention.
6 is a view showing a state in which divided unit vertical pads and unit inclined pads are applied to the bolt assembly type belt end fixing device according to an embodiment of the present invention.
7 is a view illustrating a comparison of a distance obtained by adding a length of a bolt and a depth of a bolt through hole and a bolt coupling groove according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a view schematically showing a state in which a belt (B) is fixed to a bolt assembly type belt end fixing device according to an embodiment of the present invention, and FIG. 2 is a bolt assembly type belt according to an embodiment of the present invention. It is a view showing a cross-section of a state in which the belt (B) is fixed to the end fixing device. And Figure 3 is a view showing an exploded state of the bolt assembly type belt end fixing device according to an embodiment of the present invention.

1 to 3, the bolt assembly type belt end fixing device (hereinafter, referred to as'fixing device') according to the present embodiment includes a socket 100, a vertical pad 200, an inclined pad 300, and a wedge. It is configured to include 400 and bolt 500.

The socket 100 has a receiving space formed therein, and a belt through hole 101 is formed at one end to allow the drive belt B to pass therethrough, and vertical walls 102 and vertical walls 102 at both sides around the belt through hole 101 The inclined wall 103 is formed, and the vertical wall 102 and the inclined wall 103 are formed so that the closer to the belt through hole 101, the smaller the interval between them. And the upper end of the socket 100 may be formed with a coupling hole so as to be coupled to the rod (R).

In addition, the vertical pad 200 is disposed on the inner wall of the vertical wall 102 and the inclined pad 300 is disposed on the inner wall of the inclined wall 103 so that the vertical wall 102 and the inclined wall 103 of the socket 100 By compensating for the thickness, it is possible to increase the load carrying capacity of the socket 100.

The wedge 400 is movably accommodated in the socket 100, the circumferential surface 410 is formed so that the driving belt B is wound, and the circumferential surface 410 moves close to the socket belt through hole 101 It is formed so as to increase the close pressing force by the pad as it increases.

Finally, the bolt 500 fixes the vertical pad 200 and the inclined pad 300 to the socket 100, thereby reducing manufacturing cost compared to the conventional cast socket, and residual deformation due to conventional welding It is possible to prevent the strength weakening due to, and there is an effect of providing an appropriate tolerance.

In this case, the socket 100 may be formed to be assembled/disassembled by being divided so that the vertical wall 102 and the inclined wall 103 are bisected, respectively. Specifically, the socket 100 is divided left and right so as to be assembled/disassembled into a first socket 110 and a second socket 120 along the width direction of the drive belt B to be inserted and fixed, and the divided first socket ( 110) and the second socket 120 may be coupled to the vertical pad 200 and the inclined pad 300 by a bolt 500 to fix the assembly state. That is, the socket is divided into a first socket 110 and a second socket 120, and the divided first socket 110 and the second socket 120 are inclined with the vertical pad 200 by the bolt 500. By being coupled to the pad 300, the assembled state is fixed, and when the bolt 500 is removed in the assembled state, it may be formed to be disassembled again. Therefore, the fixing device according to the present embodiment may be easily released and assembled for maintenance after a load is applied to the belt.

FIG. 4 is a diagram illustrating a comparison of a height difference between the vertical pads 200 and the inclined pads 300 according to an exemplary embodiment of the present invention.

Referring to FIG. 4, in the fixing device according to the present embodiment, the tensile force concentration point p1 at which the tensile force applied to the driving belt B is concentrated from the inside of the socket 100 moves upward and vertically and inclined with the wedge 400. It is desirable to induce the compressive force applied to the drive belt (B) by the pads 200 and 300 to be distributed to the upper end.To this end, the inclined pad 300 is in a state in which the lower end of the inclined pad is located above the lower end of the vertical pad. Can be fixed to the socket 100.

Specifically, the tensile force concentration point p1 at which the tensile force applied to the driving belt B from the inside of the socket 100 is concentrated is formed at the lower end of the area in which the inclined pad 300 contacts the driving belt B. Since the longer the lifespan of the drive belt (B) is shortened as a larger force is applied to the concentration point (p1), the force applied to the drive belt (B) is moved upward by moving the position of the tensile force concentration point (p1) upward. It is desirable to induce it to be distributed. To this end, the inclined pad 300 is arranged and fixed so that the arrangement position h1 of the lower end is higher than the arrangement position h2 of the lower end of the vertical pad. In addition, for the same reason, the inclined pad 300 is disposed so that the placement position (h1) of the lower end is formed higher than the placement position (h3) of the lower end of the wedge 400 while the wedge 400 is disposed inside the socket 100 Can be fixed.

5 is a view showing a state in which a vertical pad 200 is divided into a unit vertical pad 200 according to an embodiment of the present invention, and FIG. 6 is a unit divided into a fixing device according to an embodiment of the present invention. A diagram showing a state in which the vertical pad 200 and the unit inclined pad 300 are applied. And FIG. 7 is a view illustrating a comparison of a distance obtained by summing the length l1 of the bolt and the depths l2 and l3 of the bolt through hole and the bolt coupling groove according to an embodiment of the present invention.

5 to 7, the fixing device according to the present embodiment concentrates tensile force to distribute the compressive force applied to the drive belt B by the wedge 400, the vertical pad 200, and the inclined pad 300. A plurality of dots can be formed.

To this end, the vertical pad 200 and the inclined pad 300 according to the present embodiment may have a separation distance from the vertical wall 102 or the inclined wall 103 according to the degree of tightening of the bolt 500. The socket 100 has a bolt through hole 104 through which the bolt 500 passes through the vertical wall 102 and the inclined wall 103, and the bolt 500 is formed in the vertical pad 200 and the inclined pad 300. The bolt insertion grooves 204 and 304 to be inserted may be formed, and the length l1 of the bolt may be formed to be longer than the sum of the depth l2 of the bolt through hole and the depth l3 of the bolt insertion groove.

In this case, when a space is formed between the vertical pad 200 and the vertical wall 102 or the inclined pad 300 and the inclined wall 103, a washer W or a spacer may be inserted. Of course, even when a space is formed between the head of the bolt 500 and the vertical wall 102 or the inclined wall 103, a washer W or a spacer may be inserted.

Here, a plurality of bolt through holes 104 are formed in the vertical wall 102 and the inclined wall 103 so as to be spaced apart in the vertical direction, and the bolt insertion grooves 204 and 304 correspond to the bolt through holes 104 and the vertical pads ( 200) and the inclined pad 300 are formed to be spaced apart in the vertical direction, and fastening of a bolt at a specific position among a plurality of bolts 500 inserted and fastened into the bolt through holes 104 and the bolt insertion grooves 204 and 304 By adjusting the degree, the pressing force of the vertical pad 200 and the inclined pad 300 to the driving belt B may be partially adjusted for each region.

5 to 6, the vertical pad 200 is divided into two or more unit vertical pads 210, 220, 230, and 240, and the inclined pad 300 is divided into two or more unit inclined pads 310, 320, 330, and 340, respectively. The unit vertical pads 210, 220, 230, and 240 and the unit inclined pads 310, 320, 330, and 340 may be individually fixed by the bolt 500. In this case, the unit vertical pads 210, 220, 230, and 240 and the unit inclined pads 310, 320, 330, and 340 may have rounded edges of surfaces disposed to contact the belt B. In addition, each of the unit vertical pads 210, 220, 230, and 240 and the unit inclined pads 310, 320, 330, and 340 may have two bolt insertion grooves 204 and 304, respectively.

In particular, when the inclined pad 300 in which the tensile force is concentrated is formed by being divided into four unit inclined pads 310, 320, 330, and 340 as shown in FIG. By adjusting the separation distance so as to be further separated from the four tensile force concentration points (p1, p2, p3, p4) can be formed.

In addition, by adjusting the degree of tightening of the bolt at a specific position as described above, the effect of partially adjusting the contact pressing force of the vertical pad 200 and the inclined pad 300 against the drive belt B for each region is vertical. When the pad 200 and the inclined pad 300 are divided and formed, it may be further maximized.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: socket
101: belt through hole 102: vertical wall
103: inclined wall 104: bolt through hole
110: first socket 120: second socket
200: vertical pad
204: bolt insertion groove 210: first unit vertical pad
220: second unit vertical pad 230: third unit vertical pad
240: fourth unit vertical pad
300: slope pad
304: bolt insertion groove 310: first unit inclined pad
320: second unit inclined pad 330: third unit inclined pad
340: fourth unit inclined pad
400: wedge
410: circumferential surface
500: volts
B: drive belt

Claims (10)

An accommodation space is formed inside and a belt through hole is formed at one end to allow the drive belt to pass therethrough, vertical walls and inclined walls are formed on both sides around the belt through hole, and the vertical wall and the inclined wall are the belt A socket formed such that a gap between them becomes smaller as it approaches the through hole;
A vertical pad disposed on an inner wall of the vertical wall;
An inclined pad disposed on an inner wall of the inclined wall;
A wedge that is movably accommodated in the socket and has a circumferential surface so that the driving belt is wound, and the circumferential surface is formed to increase a close pressing force by the pad as it moves closer to the socket belt through hole; And
A bolt fixing the vertical pad and the inclined pad to the socket
Bolt assembly type belt end fixing device comprising a.
The method of claim 1,
The socket is a bolt assembly type belt end fixing device, characterized in that the vertical wall and the inclined wall are divided so as to be divided along the width direction of the drive belt to be assembled/disassembled.
The method of claim 2,
The divided socket is coupled to the vertical pad and the inclined pad by the bolt to fix the assembly state.
The method of claim 1,
The bolt assembly type belt end fixing device, wherein the inclined pad is fixed to the socket with a lower end positioned above the lower end of the vertical pad.
The method of claim 3,
The vertical pad and the inclined pad is a bolt assembly type belt end fixing device, characterized in that the separation distance from the vertical wall or the inclined wall is adjusted according to the tightening degree of the bolt.
The method of claim 5,
In the socket, a bolt through hole through which the bolt passes is formed in the vertical wall and the inclined wall,
Bolt assembly type belt end fixing device, characterized in that a bolt insertion groove into which the bolt is inserted is formed in the vertical pad and the inclined pad.
The method of claim 6,
A plurality of bolt through holes are formed to be spaced apart along the vertical direction,
The bolt insertion groove is formed in a plurality of spaced apart along the vertical direction corresponding to the bolt through hole,
By adjusting the degree of tightening of the bolt at a specific position among a plurality of bolts inserted and fastened into the bolt through hole and the bolt insertion groove, the vertical pad and the inclined pad can partially control the tight pressing force of the drive belt for each area. Belt end fixing device for belt assembly with
The method of claim 6,
Bolt assembly type belt end fixing device, characterized in that the length of the bolt is formed to be longer than the sum of the depth of the bolt through hole and the depth of the bolt insertion groove.
The method of claim 8,
The vertical pad is divided into two or more unit vertical pads, and the inclined pad is divided into two or more unit inclined pads,
Each of the unit vertical pad and the unit inclined pad are individually fixed by the bolt.
The method of claim 9,
The unit vertical pad and the unit inclined pad, the bolt assembly type belt end fixing device, characterized in that the edge of the contact surface in contact with the drive belt is rounded.

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