KR102304974B1 - Portable multi-tensioning device - Google Patents

Abstract

The present invention relates to a portable multiple tensioning device, comprising: a horizontal bar-shaped base frame; a standing frame that is reinforced on the base frame to stand-up coupled; It is installed in the lower part of the standing frame, the support portion having a ladder jack coupled to the bottom of the base frame; a supporter that is spaced apart from the support in the base frame and reinforced; And it is installed so as to be movable and fixed up and down in the standing frame, a tension wire for tensioning is wound, unwinding and pulling fixing of the tension wire can be selected, and it includes a tensioning means connected with a hook for hooking and fixing on the tension wire. In addition, it is convenient to use the work of taking out minor damage to the car body, and it is easy to fix, separate, use, move, install and fix on the fixed rail, and it can be firmly fixed in tension work, and it can easily perform restoration work through various deformations. It is possible to provide the advantages of being portable for moving work, easy to assemble and disassemble, and carry light weight due to its low weight, allowing prefabricated light work for sheet metal and dents.

Description

PORTABLE MULTI-TENSIONING DEVICE

The present invention relates to a portable multiple tensioning device used for sheet metal in a vehicle.

The exterior panel corresponding to the chassis of the vehicle is damaged by being crushed by an accident. Such damaged panels are sometimes replaced in a modular way, but are restored through repair work such as sheet metal or dents after tensile work through a tensioner.

For the tensioning work of the vehicle, the method uses stud welding and hooks to the tensioning device to pull and restore the recessed or dented parts, and to use a hammer and various sheet metal tools to finely straighten them.

The tensioning device, also called a puller, is configured to pull the wire connected to the hook. Existing pullers are mainly large and are used in a state of being installed in the damaged part of the vehicle.

Existing large pullers have been used for both light work and large work so far, and when moving the large puller during light work to proceed with the work, the worker's fatigue increased due to the movement of the puller during work and the work time was long.

As such, the large puller for tensioning the existing vehicle panel is for repairing the vehicle through body modification, such as restoring the body frame and various internal body skeleton deformations to their original state. It was inconvenient to use for light work (sheet metal, dent) included in the correction work.

For reference, as a device technology related to a conventional vehicle dent and sheet metal, there is a 'vehicle sheet metal correction device' disclosed in Patent Application No. 10-2016-0021136.

In order to solve the inconvenience (weight, volume) of the existing large tension puller as described above, it should be easy to move and install, and it should be convenient to use during a slight withdrawal operation. In other words, the rail bridge should be easy to use on the fixed rail and sufficiently useless.

In addition, if the fixed rail is not used fixedly, the puller should not move during the pulling out of the damaged part of the car body. When repairing the hardening phenomenon of the car body during work, it should be possible to simultaneously perform multiple deformations (plastic and elastic deformation). Moreover, it should be portable and easy to assemble and disassemble during business trip (dent) repair, and it should be strong and light in use.

Many inconveniences were experienced during the use of the existing large puller, and as a result of research to solve the inconvenient work process, a technology was developed in consideration of the above requirements.

According to the present invention, it is convenient to use a slight withdrawal operation of a damaged part of a vehicle body, and it is easy to fix, separate, use, move, install and fix on a fixed rail, and it can be firmly fixed in a tension operation, and restoration work through various deformations is easily performed. It is to provide a portable multi-tensioning device that can be carried for moving work, is easy to assemble and disassemble, and has a small weight, so that it can be carried lightly and can perform prefabricated light work on sheet metal and dents.

A portable multiple tensioning device according to the present invention includes: a horizontal bar-shaped base frame; a standing frame reinforced on the base frame to stand-up coupled; It is installed in the lower portion of the standing frame, the support portion having a ladder jack coupled to the bottom portion of the base frame; a supporter spaced apart from the support part in the base frame and reinforcedly coupled; and a tensioning means installed so as to be movable and fixed in the vertical direction in the standing frame, a tension wire for tensioning is wound, unwinding and pulling fixing of the tension wire can be selected, and a hook for hooking and fixing to the tension wire is connected. Including, wherein the supporter, a fixed pipe coupled in the vertical direction to the bottom of the base frame; a movable fixing unit separably coupled to the fixed pipe, male and female, movable and fixed on the work surface; and a fixing bolt coupled to the fixing pipe to fix the moving fixing unit.

The movable fixing unit is provided as a rail bridge installed on the fixed rail, and the rail bridge is a fixed bundle having a shape corresponding to the fixed rail in the shape of a straight groove formed on the work surface to cross the tension direction of the tension means. ; and a coupling bar provided on the upper part of the fixed bundle and coupled to the fixed pipe, the fixed bundle having a slider that is inserted into the fixed rail and moved, and is supported on the working surfaces of both sides of the fixed rail on the upper part of the slider. It is appropriate that the fixed contact support is provided, and the fixing bundle and the coupling bar are integrally manufactured.

The movable fixing unit may include a support pipe coupled to the support unit and the supporter, the length of which can be adjusted; and a fixing jack detachably coupled to the end of the support pipe and providing a fixing force corresponding to the tensioning direction of the tensioning means, wherein the support pipe is flat on the work ground from the lower part of the base frame toward the work vehicle. Doedoe installed, provided with a plurality of fastening bolts for installing the support portion, the fixing jack is provided as a ladder jack can be fixed position by being supported by a work vehicle.

The movable fixing unit may include: a pipe joint connected to an end of the support pipe and provided with joint passages in vertical and horizontal directions; a horizontal brace coupled to the joint passage in the horizontal direction of the pipe joint, the wheel of the work vehicle being placed in a right angle space; and a vertical brace coupled to the joint passage in the vertical direction of the pipe joint, wherein the plurality of first fixing bolts are provided on the horizontal brace and for installing the fixing jack; and a plurality of second fixing bolts provided on the vertical brace and for installing the fixing jack, wherein the fixing jack is installed on any one of the horizontal brace and the vertical brace to be supported by the work vehicle.

The moving fixing unit may further include a wheel shaft and a pair of wheels installed on the support pipe.

The portable multiple tensioning device further includes a movable holder movably installed on the standing frame, wherein the movable holder includes: a movable block movably and fixedly installed on the standing frame; a horizontal bar which is horizontally and rotatably coupled to the moving block and provided with female threaded holes formed in a line; and a plurality of fixing rings detachably coupled to the female threaded holes of the horizontal bar so as to be removably positioned.

The portable multiple tensioning device further includes an upper holder provided to pull and fix the upper end of the standing frame, the upper holder comprising: a fixing block coupled to and fixed to the upper end of the standing frame; and a holding wire connected to the fixing block and configured to provide a fixing force corresponding to the tension reaction force of the tensioning means.

The tension means, a hand winch on which the tension wire is wound; a lever provided with a latch for the selection of loosening and pulling of the tension wire in the hand winch; and a spring connected to the lever and resiliently supporting the lever in a position where the tension wire is released and pulled.

The present invention described as described above is convenient to use for taking out minor damage to the body, easy to fix, separate, use, move, install and fix on a fixed rail, can be firmly fixed in tensioning work, and through various deformations Restoration work can be performed easily.

It is possible to provide a portable multi-tensioning device that is portable for moving work, is easy to assemble and disassemble, and has a low weight, so that it can be carried lightly and can perform prefabricated light work on sheet metal and dents.

1 is a perspective view of a portable multiple tensioning device according to an embodiment of the present invention.
FIG. 2 is an enlarged view of the installation of the portable multiple tensioning device of FIG. 1 installed on a fixed rail; FIG.
3 is an installation view in which a support pipe and a fixed jack are applied to a portable multiple tensioning device according to another embodiment of the present invention.
4 is an installation view in which a support pipe, a pipe joint, and a fixed jack are applied to a portable multiple tensioning device according to another embodiment of the present invention.
5 is an installation view in which a fixing jack is installed on a vertical brace of a portable multi tensioning device according to another embodiment of the present invention and supported on a wheel of a work vehicle.
6 is an installation view in which a movable holder is applied to a standing pipe of a portable multiple tensioning device according to embodiments of the present invention.
7 is an installation view of an upper holder applied to a standing pipe of a portable multiple tensioning device according to embodiments of the present invention.
8 is a detailed view of a hand winch of a portable multiple tensioning device according to embodiments of the present invention.

Hereinafter, among various embodiments of the present invention, a portable multi-tensile device with high practical realization and industrial applicability will be described with reference to specific components shown in the accompanying drawings.

1 is a perspective view of a portable multiple tensioning device according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the installation in which the portable multiple tensioning device of FIG. 1 is installed on a fixed rail.

1 and 2, the portable multiple tensioning device according to an embodiment of the present invention includes a horizontal bar-shaped base frame 101, a standing frame 102 that is reinforced and erected on the base frame 101. , The support part 110 having a ladder jack 111 that is installed in the lower part of the standing frame 102 and coupled to the bottom surface of the base frame 101, and is spaced apart from the support part 110 in the base frame 101 It includes a supporter 120 that is reinforcingly coupled, and a tensioning means 180 that is installed so as to be movable and fixed up and down in the standing frame 102 and connected to a hook 182 for hooking and fixing the tension wire 181 .

The base frame 101 and the standing frame 102 are provided as a square iron bar to constitute the device body 100, and while other elements are installed in the working area, they are fixed in an appropriate working position, and act during the tensioning operation. It provides a frame structure that withstands the tensile force.

The base frame 101 and the standing frame 102 are coupled by welding, and the triangular-shaped upper reinforcing member 103 is coupled to the connecting edge portion to provide a reinforcing structure in right angle coupling. The base frame 101 and the standing frame 102 may be integrally manufactured, and may be made of a material such as an aluminum alloy that is lighter than iron and has sufficient rigidity.

The support unit 110 supports the lower portion of the device body 100 on the working ground, and is provided as a ladder jack 111 so that the height can be adjusted. The ladder jack 111 is welded to the base frame 101 to be firmly fixed, but is not limited thereto and may be detachably coupled and assembled.

Ladder jack 111 is a commercial product, and both sides of a plurality of pairs of link bars 112 of the upper and lower parts are coupled to each other by a rotating part that is axially coupled to each other, and a long bolt 114 so that both sides of the rotating part can adjust the distance. connected to, and a rotation handle 113 for rotation is provided on the long bolt 114 .

The supporter 120 is spaced apart from the ladder jack 111 used as the support 110 to support the base frame 101 on the work ground, and the position is on the work ground according to the work method for the damaged panel of the work vehicle. It can be directly fixed or indirectly fixed.

The supporter 120 is a fixed pipe 121 coupled in the vertical direction to the bottom of the base frame 101, a male and female separably coupled to the fixed pipe 121, and a movable fixing part ( 130 , and a fixing bolt 131 coupled to the fixing pipe 121 to fix the moving fixing unit 130 .

The fixed pipe 121 is coupled to the lower portion of the base frame 101 at right angles, and is reinforced by the lower reinforcing member 122 , and has a shape of a pipe into which the movable fixing unit 130 is inserted and installed, and a fixing bolt 131 . ) is fastened and a through screw part 123 connected to the inside is provided on the outer periphery.

The moving fixing unit 130 is provided as a rail bridge 133 installed on the fixed rail 135 of the work area.

The rail bridge 133 includes a fixed bundle 134 , a coupling bar 136 , and a slider 137 .

The fixing bundle 134 has a shape corresponding to the fixing rail 135 in the shape of a straight groove formed on the working surface to cross the tension direction of the tensioning means 180 , and has a shape to span the fixing rail 135 .

The coupling bar 136 is provided on the upper part of the fixing bundle 134 and coupled to the fixing pipe 121 male and female, and is manufactured integrally with the fixing bundle 134 , and is press-contacted with the fixing bolt 131 to make the fixing pipe 121 . ) is fixed at

The slider 137 is manufactured integrally with the fixed bundle 134 and inserted into the fixed rail 135 , has a smaller thickness than the fixed bundle 134 , and moves on the fixed rail 135 and crosses the fixed rail 135 . It has a thick straight shape to prevent movement in the direction of

The upper portion of the slider 137 is provided with a contact support portion 138 that is fixed by being supported on both sides of the work surface of the fixed rail (135). The contact support 138 is provided on both sides of the central portion to which the slider 137 is connected in the fixed bundle 134 .

The moving fixing unit 130 is different from the rail bridge 133 installed on the fixed rail 135 , and in a work area where it is difficult to use the fixed rail 135 , the position is fixed by indirectly using a work vehicle. can be used

3 is an installation view in which a support pipe and a fixed jack are applied to a portable multiple tensioning device according to another embodiment of the present invention.

Referring to FIG. 3 , the movable fixing part 130 is coupled to the support part 110 and the supporter 120 and is detachably coupled to the end of the support pipe 140 and the support pipe 140 with adjustable length. and a fixing jack 145 that provides a fixing force corresponding to the tensioning direction of the tensioning means 180 .

The support pipe 140 may use two-stage rectangular pipes connected to each other, and has a structure that extends from the device body 100 side to the work vehicle side and can be arranged.

The support pipe 140 is installed flat on the work ground from the lower part of the base frame 101 toward the work vehicle and includes a plurality of first fastening bolts 141 to be installed on the support unit 110 .

A part of the support pipe 140 is coupled to the bottom of the ladder jack 111 used as the support part 110 by a plurality of first fastening bolts 141 , and the other part is fixed like the rail bridge 133 . By being installed in the pipe 121, it is installed and fixed to the lower part of the device body 100 .

The fixed jack 145 is provided as the ladder jack 111 of the support unit 110 and is fixed in position by being supported by the work vehicle.

This fixed jack 145 is installed on the plurality of second fastening bolts 142 at the end of the support pipe 140 as the same as the ladder jack 111 used as the support unit 110 and fixed in position, The position is fixed by being supported on the bottom of the work vehicle.

The fixed jack 145 may be generally provided in a vehicle.

On the other hand, there is another installation method in which the fixing jack 145 is supported on the wheel side of the work vehicle and the device body 100 is fixed in position in response to the tensile force of the tensioning means 180 .

4 is an installation view in which a support pipe, a pipe joint, and a fixed jack are applied to a portable multiple tensioning device according to another embodiment of the present invention, and FIG. 5 is a vertical view of the portable multiple tensioning device according to another embodiment of the present invention. This is an installation diagram in which a fixed jack is installed on the brace and supported on the wheel of the work vehicle.

4 to 5 , the supporter 120 is connected to the end of the support pipe 140 and includes a pipe joint 150 having joint passages in vertical and horizontal directions, and a joint in the horizontal direction of the pipe joint 150 . It is coupled to the passage and further includes a horizontal brace 151 in which the wheels 162 of the work vehicle are seated in a right angle space, and a vertical brace 152 coupled to the joint passage in the vertical direction of the pipe joint 150 .

A plurality of first fixing bolts 156 provided on the horizontal brace 151 and for installing the fixing jack 145, and a plurality of second fixing bolts 156 provided on the vertical brace 152 and for installing the fixing jack 145 It further includes a bolt 157 .

The fixing jack 145 may be installed vertically on the first fixing bolt 156 of the horizontal brace 151 or horizontally on the second fixing bolt 157 of the vertical brace 152 . The vertical brace 152 may be installed in the pipe joint 150 by being rotated in a different direction so that the interference of the second fixing bolt 157 does not occur depending on the installation aspect of the fixing jack 145 .

In order to prevent the flow of the pipe joint 150 to which the support pipe 140 is inserted and coupled, and the fixing jack 145 installed horizontally to the second fixing bolt 157 to be firmly supported without being pushed, the pipe joint 150 ), it is preferable to further include a fixing bolt (131).

The fixing jack 145 may be fixed to the bottom of the work vehicle by being installed on the first fixing bolt 156 at the end of the horizontal brace 151 .

In contrast, the fixing jack 145 is installed on the second fixing bolt 157 of the vertical brace 152, and in a state where the horizontal brace 151 is extended toward the wheel 162 in the moving fixing unit 130, the wheel ( 162) by being supported on the side of the wheel can be fixed in position.

As such, the horizontal brace 151 and the fixing jack 145 prevent the device body 100 from being moved to the working vehicle side by the tensioning means 180, so the position of the device body 100 in the tensioning operation on the working vehicle. is firmly fixed

As such, the portable multiple tensioning device can be sufficiently used in a work area without a fixed rail by the horizontal brace 151 and the fixed jack 145 as described above, and can provide flexible work mobility.

The moving fixing unit 130 further includes a wheel shaft 161 and a pair of wheels 162 installed on the support pipe 140 to move forward, backward, and other areas with respect to the working vehicle of the device body 100 . to facilitate movement and deployment. Accordingly, it is convenient to adjust the working position, and it is easy to move.

6 is an installation view in which the movable holder 170 is applied to the standing pipe of the portable multiple tensioning device according to embodiments of the present invention.

Referring to FIG. 6 , the portable multiple tensioning device according to the present embodiments further includes a movable holder 170 movably installed in the standing frame 102 .

The movable holder 170 is horizontally and rotatably coupled to the movable block 171 and the movable block 171 that are movably and fixedly installed in the standing frame 102, and the female screw holes 173 are formed in a line to provide a horizontal It further includes a plurality of fixing rings 174 that are detachably and positionally coupled to the female threaded holes 173 of the bar 172 and the horizontal bar 172 .

The horizontal bar 172 may be moved and position-adjusted and fixed in the standing frame 102 by the moving block 171 , and a plurality of holding wires for fixing the position of the standing frame 102 are provided in the fixing ring 174 . can be connected

The retaining ring 174 can be used to connect safety strings to limit the movement of the device body 100, and can be connected to tension rods welded to the damaged area of the vehicle panel in a spot welder, and the position adjustment is not possible. Because it is possible, it can be connected corresponding to the position of the tension bar.

The fixing ring 174 is used to pull the tension bar by small movement of the standing frame 102 by coupling a small winch, etc., and plays a role in micro sheet metal and dent work.

7 is an installation view of an upper holder applied to a standing pipe of a portable multiple tensioning device according to embodiments of the present invention.

Referring to FIG. 7 , the portable multiple tensioning device according to the present embodiment further includes an upper holder 175 provided to pull and fix the upper end of the standing frame 102 .

The upper holder 175 is connected to a fixing block 176 that is male and female and fixed to the upper end of the standing frame 102 , and is connected to the fixing block 176 to provide a fixing force corresponding to the tensile reaction force of the tensioning means 180 . It may include a holding wire 177 for.

The upper holder 175 is installed at the upper end of the standing frame 102, and the standing frame 102 is formed by a tensile force applied to the standing frame 102 by a holding wire 177 connected to the upper holder 175. It is possible to block the movement phenomenon.

The end of the holding wire 177 can be bound anywhere where it can be firmly fixed, and it can be hung on a weight having sufficient weight, and as shown in the figure, a bracket-type auxiliary rail installed on the fixing rail 135 as shown in the drawing. It may be connected to and supported by the bridge 133-1 to respond to the tensile force acting on the holding wire 177.

8 is a detailed view of a hand winch of a portable multiple tensioning device according to embodiments of the present invention.

Referring to FIG. 8 , the tensioning means 180 is provided with a hand winch 190 in which a tension wire 181 for tension is wound, and unwinding and pulling and fixing of the tension wire 181 are selectable.

The tension means 180 includes a hand winch 190 on which the tension wire 181 is wound, a lever 192 with a gear latch for selecting the loosening and pulling of the tension wire 181 from the hand winch 190, and a spring 193 connected to the lever 192 and resiliently supporting the lever 192 in the loosening and pulling positions of the tension wire 181 .

The lever 192 is rotated in the vertical direction and fixed to one side, thereby allowing loosening or pulling of the tension wire 181 in the hand winch 190 by the action on the gears 191 . The hand winch 190 is provided with a rotating handle for winding or unwinding the holding wire 177 . The lever 192 is elastically fixed in position by a spring 193 .

The hand winch 190 has a general latch structure for preventing reverse rotation while allowing rotation, and a lever 192 extending from a commercial product may be used.

The present invention as described above makes it possible to correct not only the pulling operation with one tensioning device but also the deformed or raised areas using a leveling hammer, so that the light work area can be divided into several areas and the vehicle exterior plate area without a fixed rail. In case of wide work, several clamps and hand winches can be hung at the same time, which reduces time and improves work efficiency. provides

Although the embodiments of the present invention have been described as described above, those of ordinary skill in the art based thereon can add or change components within the scope that does not depart from the essential technical spirit of the present invention described in the claims. , it will be possible to variously modify and change the present invention by deletion or addition, which is also included within the scope of the present invention.

100: device body 101: base frame
102: standing frame 103: upper reinforcement member
110: support 111: ladder jack
112: link bar 113: rotary knob
114: long bolt 120: supporter
121: fixed pipe 122: lower reinforcement member
123: through-thread 130: fixed moving part
131: fixing bolt 133: rail bridge
133-1: auxiliary rail bridge
134: fixed assembly 135: fixed rail
136: coupling bar 137: slider
138: contact support 140: support pipe
141: first fastening bolt 142: second fastening bolt
145: fixed jack 150: pipe joint
151: horizontal brace 152: vertical brace
156: first fixing bolt 157: second fixing bolt
161: wheel axle 162: wheel
170: moving holder 171: moving block
172: horizontal bar 173: female thread hole
174: retaining ring 175: upper holder
176: fixed block 177: holding wire
180: tension means 181: tension wire
182: hook 190: hand winch
191: gear 192: lever
193: spring

Claims (8)

a horizontal bar-shaped base frame 101;
a standing frame 102 that is reinforced and stand-up coupled on the base frame 101;
It is installed in the lower portion of the standing frame 102, the base portion 101 having a ladder jack 111 coupled to the bottom portion of the support portion (110);
a supporter 120 spaced apart from the support part 110 in the base frame 101 and reinforcingly coupled; and
It is installed so as to be movable and fixed up and down in the standing frame 102 , a tension wire 181 for tension is wound, and unwinding and pulling and fixing of the tension wire 181 are selectable, and the tension wire 181 . It includes a tensioning means 180 to which a hook 182 for hanging and fixing is connected,
The supporter 120,
a fixed pipe 121 coupled to the bottom of the base frame 101 in the vertical direction;
a movable fixing unit 130 detachably coupled to the male and female parts of the fixed pipe 121 and capable of moving and fixing on the work surface; and
and a fixing bolt (131) coupled to the fixing pipe (121) to fix the movable fixing part (130).
According to claim 1,
The movable fixing unit 130 is provided as a rail bridge 133 installed on a fixed rail 135 fixedly installed on the ground of the work area,
The rail bridge 133,
a fixing bundle 134 having a shape corresponding to the fixing rail 135 in the shape of a straight groove formed on the working surface to cross the tension direction of the tension means 180; and
A portable mini multi tensioning device, characterized in that it is provided on the upper portion of the fixing bundle (134) and includes a coupling bar (136) that is male and female coupled to the fixing pipe (121).
According to claim 1,
The moving fixing unit 130,
It is coupled to the support unit 110 and the supporter 120, and the length is fixed or the length is adjustable so that the working vehicle and the standing frame 102 to which the tension means 180 are fixed are supported so as to be spaced apart. support pipe 140; and
A fixing jack ( 145), a portable mini-multiple tensioning device comprising a.
4. The method of claim 3,
The moving fixing unit 130,
a pipe joint 150 connected to an end of the support pipe 140 and provided with joint passages in vertical and horizontal directions;
a cross-shaped horizontal brace 151 coupled to the joint passage in the horizontal direction of the pipe joint 150, the wheel 162 of the work vehicle is placed in a right-angled space; and
Further comprising a vertical brace 152 coupled to the joint passage in the vertical direction of the pipe joint 150,
A plurality of first fixing bolts 156 provided on the horizontal brace 151 and for installing the fixing jack 145; and
It is provided on the vertical brace 152 and further includes a plurality of second fixing bolts 157 for installing the fixing jack 145,
The fixed jack 145 is installed on any one of the horizontal brace 151 and the vertical brace 152 and is supported by a work vehicle.
4. The method of claim 3,
The movable fixing unit 130 further includes a wheel shaft 161 and a pair of wheels 162 installed on the support pipe 140 .
According to claim 1,
Further comprising a movable holder 170 that is movably installed in the standing frame 102,
The movable holder 170,
a moving block 171 that is movable and fixedly installed on the standing frame 102;
a horizontal bar 172 that is horizontally and rotatably coupled to the moving block 171 and has several female screw holes 173 formed therein; and
The portable mini multi tensioning device, characterized in that it further comprises a plurality of fixing rings (174) coupled to the female threaded holes (173) of the horizontal bar (172) to be detachably and positionally adjustable.
According to claim 1,
Further comprising an upper holder 175 provided to pull and fix the upper end of the standing frame 102,
The upper holder 175,
a fixing block 176 that is coupled to and fixed to the upper end of the standing frame 102; and
and a holding wire (177) connected to the fixing block (176) and providing a fixing force corresponding to the tensile reaction force of the tensioning means (180).
According to claim 1,
The tension means 180,
a hand winch 190 on which a tension wire 181 is wound;
a lever 192 with a latch for selecting the release and pull of the tension wire 181 in the hand winch 190; and
and a spring (193) connected to the lever (192) and resiliently supporting the lever (192) in a position where the tension wire (181) is released and pulled.

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