KR102020217B1 - slow-descending device with V-shaped brake - Google Patents

Abstract

The present invention relates to a V-groove brake type descending lifeline and, more specifically, to a V-groove brake type descending lifeline capable of increasing the number of stories for fire evacuation. To achieve the purpose, the present invention includes: a first pulley rotated around a first rotary shaft, and on which a first wire is wound; a second pulley rotated around a second rotary shaft, and on which a second wire is wound; a fixing member connected with the first and second wires and including a ring; a first brake wheel including a first groove formed on the circumferential edge; a second brake wheel including a second groove formed on the circumferential edge; and a brake plate placed between the first and second brake wheels, and generating braking force.

Description

V-groove brake stiffener {slow-descending device with V-shaped brake}

The present invention relates to a stiffener, and more particularly, to generate a braking force proportional to the weight of a person using the stiffener, including a braking structure using a brake wheel formed with a V-groove, regardless of the weight of the user and It relates to a V-groove brake damper made to enable a stable emergency escape.

In general, when the fire breaks down from a high-rise building such as a building or apartment, it is difficult to escape by using a stairway or emergency passage. Even if you do not have the equipment to guide you to slowly descend to the ground.

On the other hand, the conventional stiffener is composed mainly of the drive gear, driven gear, pulley, centrifugal brake mechanism.

The drive gear and the driven gear are made to rotate in engagement with each other, the drive gear is made to have a relatively larger diameter than the driven gear.

The pulley is installed to be coaxial with the drive gear and is configured to rotate with the drive gear.

The centrifugal brake mechanism is installed to be coaxial with the driven gear and configured to generate a braking force by using the centrifugal force generated by the rotation of the driven gear.

On the other hand, the rope is wound on the pulley, one end of the rope is provided with a reel wound around the rope, the other end of the rope is provided with a belt fixed to the user's body.

As described above, the conventional descender using the centrifugal brake mechanism has a descending speed in proportion to the weight of the user, and the heat generated by the centrifugal brake mechanism also increases.

In addition, the drive gear, the driven gear, the pulley, and the centrifugal brake are installed inside one case, and a reel for winding the rope is separately provided on the outside of the case, and at this time, a coarse ( 8 to 10 mm in diameter) as the fiber rope is configured, there is a problem that the bulk of the steel.

The use of such a thick rope is not only bulky, but when the height of the descending height is increased, the handling weight to be thrown in the downward direction becomes heavy and there is a problem in that the use height is restricted.

Registration Utility Model Publication No. 20-0476189 (August 05, 2015)

The present invention has been made in consideration of the above problems, and an object of the present invention is to induce a stable emergency escape regardless of the weight of the user through a mechanism that generates the braking force irrespective of the diameter of the rope and proportional to the weight of the user It is to provide a V-groove brake descending machine that can do it.

Another object of the present invention is to provide a V-groove brake type descending device configured to allow a user to adjust the lowering speed by adjusting the braking force.

Still another object of the present invention is to provide a V-groove brake stiffener configured to stably generate a braking force using four brake wheels having a V-groove.

Still another object of the present invention is to make the diameter of the rope as small as possible by using a rope such as steel, aramid, or carbon fiber, which is a high-strength material, by operating irrespective of the diameter of the application rope. It is to provide a V-groove brake stiffener that can reduce the weight, increase the number of evacuation floors, and increase the handling capacity.

The present invention to achieve the object as described above and to perform the problem for eliminating the conventional defects, the first pulley is rotated about a first axis of rotation having a horizontal attitude, the first wire is wound; A second pulley having a second wire wound around the second rotating shaft having a parallel posture while being spaced apart from the first rotating shaft; A fixing member disposed on the first pulley and the second pulley, connected to the first wire and the second wire, and having a ring coupled to the fixing structure; A first braking wheel installed on a first rotation shaft to rotate together with the first pulley beside the first pulley and having a first groove having a V-shaped cross section around a circumference; A second braking wheel installed on a second rotation shaft to rotate together with the second pulley beside the second pulley and having a second groove having a V-shaped cross section around a circumference thereof; And a structure that is movable between the first and second braking wheels in a vertical direction and is connected to a belt provided to be worn by a user to be in contact with the first and second braking wheels while descending by the user's weight. And a braking plate that generates a braking force while contacting the first and second braking wheels through the V-shaped contact surface, wherein the braking plate is narrower than an interval between the first and second braking wheels. It is provided with a width to move freely up and down between the first braking wheel and the second braking wheel, the connection portion is connected to the belt; And a one-piece structure formed at the upper end of the connection part, and is formed in a V-shaped structure with an inverted triangle so that both sides are inserted into the first and second grooves to generate a braking force when the braking plate descends. It provides a V-groove brake stiffener, characterized in that the V-shaped contact surface formed inclined corresponding to the inclined surface of the groove and the second groove formed on both sides.

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Meanwhile, in the V-groove brake damper, the first braking wheel, the second braking wheel, and the braking plate are each made of two braking plates formed on both sides of the first pulley and the second pulley. The may be configured to be connected to each other by a connecting member to behave together.

On the other hand, in the V-groove brake descending device, a speed adjusting mechanism for adjusting the falling speed by changing the braking force through the load control acting on the braking plate; may be further included.

On the other hand, in the V-groove brake descending device, the speed adjusting mechanism includes a shaft member rotatably installed in a horizontal position at the lower end of the frame constituting the lifting device; A cam member which is formed or installed on the shaft member to rotate together with the shaft member and includes an outer circumferential surface contacting the brake plate to adjust the position of the braking play up and down when the shaft member is rotated; And a lever installed at an outer end of the shaft member to allow the user to easily rotate the shaft member.

On the other hand, in the V-groove brake damper, the first elastic member is arranged to press the braking plate from the top to prevent the braking plate from being separated from the first and second braking wheels; may be further included.

On the other hand, in the V-groove brake damper, a second elastic member disposed between the braking plate and the cam member, installed to move with the braking plate to adjust the load applied to the braking plate through the cam member; May be included.

According to the present invention having the characteristics as described above, the braking plate is lowered by the weight of the user when the emergency escape using the waning device, thereby generating a braking force while the braking plate is in contact with the first and second braking wheels, Since the braking force increases in proportion to the weight of the user, there is an effect that can safely induce the emergency escape of the user regardless of the weight of the user.

In addition, by implementing a braking structure on both sides of the first pulley and the second pulley, there is an effect that can increase the safety of the steelwork.

In addition, by allowing the user to adjust the rate of falling in the non-egress process, there is an effect that can reduce the fear of falling and induce a safer escape.

In addition, the rope used has a small diameter of stainless steel wire rope (1 ~ 1.2mm wire diameter in steel, 0.6mm in diameter in case of aramid fiber with 6 times strength). It has the effect of being enlarged.

1 is a perspective view of a steel bar according to a preferred embodiment of the present invention,
Figure 2 is a perspective view showing the internal structure of the wanbyeonggi according to a preferred embodiment of the present invention,
3 is a plan view showing the installation structure of the first and second pulleys and the first and second braking wheels and the braking plate according to the present invention;
4 is a perspective view of a braking plate according to the present invention;
Figure 5 is a side cross-sectional view showing the installation structure of the braking plate according to the present invention,
6 is a front view showing the installation structure of the braking plate according to the present invention;
7 is a front view showing a state in which the position of the braking plate is adjusted by the speed adjusting mechanism according to the present invention;
Figure 8 is a side cross-sectional view showing a state where the position of the braking plate is adjusted by the speed adjusting mechanism according to the present invention,
9 is an exemplary view showing the magnitude of the braking force generated while the contact surface of the braking plate is rubbed against the inclined surface of the brake wheel;
10 is an exemplary view showing the magnitude of the braking force generated when the braking plate is rubbed on the two braking wheels.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 1 is a perspective view of the steel bar according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing the internal structure of the steel bar according to a preferred embodiment of the present invention, Figure 3 is a first and second pulley according to the present invention 6 is a plan view showing the installation structure of the first and second brake wheels and the braking plate, Figure 4 is a perspective view of the braking plate according to the present invention, Figure 5 is a side cross-sectional view showing an installation structure of the braking plate according to the present invention, Figure 6 Is a front view showing the installation structure of the braking plate according to the present invention, Figure 7 is a front view showing a state where the position of the braking plate is adjusted by the speed adjusting mechanism according to the present invention, Figure 8 is a speed adjusting mechanism according to the present invention By showing the side cross-sectional view showing a state where the position of the braking plate is adjusted by.

The steel sheet according to the present invention, the frame 100, the first pulley 110, the second pulley 120, the fixing member 130, the first brake wheel 140, the second brake wheel 150, the braking plate ( 160).

The frame 100 is to support the components constituting the waning machine while forming the appearance and skeleton of the waning device, such a frame 100 may be configured in a variety of structures and shapes.

On the other hand, Figure 1 is a frame 100 is formed in the form of a case comprising two support plates (101, 102) having a structure spaced apart facing each other, the components constituting the steel sheet is installed therein.

The first pulley 110 supports the first wire W1 to rotate about the first rotation shaft S1 having a horizontal posture between the two support plates 101 and 102 constituting the frame 100. It is disposed, the outer peripheral surface is formed in a concave recessed structure is configured so that the first wire (W1) is wound.

On the other hand, the first rotation shaft (S1) may be configured to rotate while being supported on the frame 100 is coupled to the two support plates (101,102) both ends rotatable structure.

The second pulley 120 supports the second wire W2, and the second rotation shaft S2 is installed to have a parallel posture while being spaced apart from the first rotation shaft S1 between the two support plates 101 and 102. It is disposed so as to rotate around, the outer peripheral surface is formed in a concave recessed structure is configured so that the second wire (W2) is wound.

On the other hand, the second rotating shaft (S2) may be configured to rotate while being supported on the frame 100 is coupled to the two support plates (101,102) both ends rotatable structure.

On the other hand, the first wire (W1) and the second wire (W2) is composed of a wire made of stainless steel or aramid fiber or carbon fiber having a diameter of 1mm ~ 1.5mm, and by using such a thin wire longer The wire having a length can be wound on the first pulley 110 and the second pulley 120, thereby increasing the height of the emergency escape using a stiffener than conventional.

 One end of the first wire W1 and the second wire W2 is fixed to the first pulley 110 and the second pulley 120, and the first wire W1 and the second wire W2 are mutually fixed. It is wound in the other direction. That is, based on FIG. 2, the first wire W1 is wound around the first pulley 110 so as to be released when the first pulley 110 rotates counterclockwise, and the second wire W2 is second. When the pulley 120 rotates clockwise, the pulley 120 is wound around the second pulley 120.

The fixing member 130 is a part that is fixed to the building when using the wan, disposed on the first pulley 110 and the second pulley 120, the first pulley 110 and the second pulley 120 It is connected to the first wire (W1) and the second wire (W2) extending from, and consists of a ring 131 is coupled to the fixed structure installed in the building.

The first brake wheel 140 is installed on the first rotation shaft S1 to rotate together with the first pulley 110 at the side of the first pulley 110 and includes two inclined surfaces 141a and 141b. The first groove 141 having a cross section of a magnetic shape is formed around the circumference.

The second brake wheel 150 is installed on the second rotation shaft S2 to rotate together with the second pulley 120 at the side of the second pulley 120, and includes two inclined surfaces 151a and 151b. The second groove 151 having a cross section of a magnetic shape is configured to be formed around the circumference.

Meanwhile, the first braking wheel 140 may be formed to have an integral structure on the first pulley 110, and the second braking wheel 150 may be formed to have an integral structure on the second pulley 120. have.

The braking plate 160 generates a braking force while contacting the first braking wheel 140 and the second braking wheel 150. The braking plate 160 may be disposed between the first and second braking wheels 140 and 150. It is arranged to have a structure that is movable in the direction, is connected to the belt 170 is provided to be worn by the user is installed to be pulled down by the weight of the user during emergency escape.

The braking plate 160 is composed of a connecting portion 161 and the braking portion 162.

The connecting portion 161 is made of a plate erected to have a vertical posture as a portion connected to the belt 170 worn by the user, but narrower than the interval between the first braking wheel 140 and the second braking wheel 150 It is made of a plate having a width, and is disposed between the first braking wheel 140 and the second braking wheel 150 to move freely up and down without interference with the first braking wheel 140 and the second braking wheel 150. It is configured to.

In connecting the connection portion 161 and the belt 170, by connecting the belt 170 to the connection portion 161 using a separate wire, the connection portion 161 and the belt 170 are sufficiently spaced apart to make an emergency escape. In the process, it is desirable to prevent the user from hitting the wan frame 100.

The braking part 162 is a part which generates a braking force while being inserted into and friction with the first groove 141 formed in the first brake wheel 140 and the second groove 151 formed in the second brake wheel 150. The upper end is made of a plate having a V-shaped structure of the inverse triangle relatively wider than the lower end, it is formed of an integral structure on the upper end of the connecting portion 161.

The inclined both sides 162a and 162b of the brake unit 162 are inserted into the first groove 141 and the second groove 151 when the brake plate 160 descends, so that the first brake wheel 140 and the second A part generating the braking force while contacting the brake wheel 150, and the V-shaped contact surface 1621 is formed on both sides 162a and 162b of the braking part 162 to be inclined for smooth generation of the braking force.

The contact surface 1621 is formed in an inclined structure corresponding to the inclined surfaces 141a, 141b, 151a, and 151b of the first groove 141 and the second groove 151, thereby providing a braking part 162 and a first brake wheel. 140 and the contact surface 1621 is in close contact with the inclined surfaces (141a, 141b, 151a, 151b) during the contact between the brake unit 162 and the second brake wheel 150, thereby stably generating a braking force. Will be.

On the other hand, in the case of a stiffener according to a preferred embodiment of the present invention, the braking structure consisting of the first braking wheel 140, the second braking wheel 150 and the braking plate 160 is the first pulley 110 and the second pulley It is comprised on both sides of the 120.

That is, the first braking wheel 140, the second braking wheel 150 and the braking plate 160 is composed of two, respectively, the first braking wheel 140 is configured on both sides of the first pulley 110, Second braking wheels 150 are formed on both sides of the second pulley 120, respectively, between the first and second braking wheels 140 and 150 disposed on one side of the first pulley 110 and the second pulley 120. One braking plate 160 is disposed, and one braking plate 160 is disposed between the first and second braking wheels 140 and 150 disposed on the other side of the first pulley 110 and the second pulley 120. do.

According to this structure, the first braking wheel 140, the first pulley 110 and the second braking wheel 150 are sequentially disposed on the first rotary shaft (S1), the second braking on the second rotary shaft (S2) The wheel 150, the second pulley 120, and the second braking wheel 150 are sequentially disposed.

On the other hand, the two braking plates 160 disposed on both sides of the first and second pulleys 110 and 120 are preferably configured to be connected to each other by the connecting member 180 to behave together, in this case extending from the belt 170. The wire is connected to the connection member 180.

In the stiffener configured as described above, the speed adjusting mechanism 190 may be further included so that the user can adjust the speed during the fall by changing the braking force through the load control acting on the braking plate 160.

The speed regulating mechanism 190 is composed of a shaft member 191, the cam member 192 and the lever 193.

The shaft member 191 is made of a shaft having a horizontal posture, it is installed on the frame 100 to have a structure rotatable under the braking plate 160.

On the other hand, the lower end of the frame 100 is additionally provided with an extension frame or a separate support bracket 103 for the configuration of the speed adjusting mechanism 190, the shaft member 191 is an extension frame or support bracket 103 It is installed to be supported.

On the other hand, the stiffener according to a preferred embodiment of the present invention, the support bracket 103 is additionally installed at the lower end of the frame 100, the shaft member 191 is installed in the support bracket 103 in a horizontal posture, the shaft The member 191 is installed to have a structure passing through the space between the braking plate 160 and the connecting member 180.

The cam member 192 includes an outer circumferential surface in contact with the lower end of the braking plate 160, and is integrally formed or fixedly installed on the shaft member 191 to rotate together with the shaft member 191.

The cam member 192 is configured in a shape capable of adjusting the working load by adjusting the vertical position of the braking plate 160 during rotation of the shaft member 191, such as oval or droplet shape.

On the other hand, the stiffener according to a preferred embodiment of the present invention, the lower end of the two braking plate 160 is connected to each other by the connecting member 180, two braking separately from the connecting member 180 at the top of the connecting member 180 A driven bar 181 is installed to connect the plate 160, and the cam member 192 acts on the braking plate 160 in contact with the lower end of the driven bar 181 to lift the driven bar 181. Configured to adjust the load.

The lever 193 is a handle which is installed at the outer end of the shaft member 191 exposed to the outside of the support bracket 103 to rotate together with the shaft member 191, the user is a shaft member using the lever 193 It is possible to adjust the speed of descent through the rotation of (191).

In the mild steel device configured as described above, the first elastic member 201 is disposed to press the braking plate 160 to prevent the braking plate 160 from being separated from the first and second braking wheels 140 and 150. A second elasticity disposed between the braking plate 160 and the cam member 192 and installed to move together with the braking plate 160 to adjust a load applied to the braking plate 160 through the cam member 192. Member 202 may be further included.

On the other hand, the first elastic member 201 according to a preferred embodiment of the present invention is composed of a leaf spring installed on the frame 100 so as to be located above the braking plate 160.

The first elastic member 201 provides a function of generating a basic braking force by pressing the upper portion of the first and second braking plates 160 to maintain contact with the first and second braking wheels 140 and 150 at all times.

On the other hand, the second elastic member 202 according to a preferred embodiment of the present invention is fixed to the lower end of the driven bar 181 connecting the two braking plates 160 and consists of a leaf spring made to contact the cam member 192 do.

The second elastic member 202 is deformed while in contact with the cam member 192 when the shaft member 191 and the cam member 192, the two braking plate 160 through the deformation of the second elastic member 202. It is possible to adjust the load acting on.

It describes the process of performing an emergency escape using the waning device according to the present invention configured as described above.

In order to carry out the emergency escape using the wan according to the present invention, first, a work is required to fix the wan on the fixed structure provided in the building, and this operation consists of fixing the fixed member 130 provided on the wan on the fixed structure You lose.

On the other hand, when the fixing of the waning machine is completed, the belt 170 provided on the waning device is fixed to wear on the body, thereby completing the preparation for emergency escape using the waning machine is completed.

When the preparation is completed, the user comes out of the building through a veranda or window and descends.

Meanwhile, as the first and second wires W1 and W2 are rotated while the first pulley 110 and the second pulley 120 provided in the waning machine are rotated in the descending process of the user, the waning machine falls down with the user. As the braking plate 160 is in contact with the first and second braking wheels 140 and 150 and generates a braking force in this process, the user can gradually descend.

That is, as the weight of the user descending is transmitted to the braking plate 160 as it is, the braking plate 160 is pulled downward, and the braking unit 162 of the braking plate 160 is the first braking wheel 140. It is inserted into the second groove 151 of the first groove 141 and the second brake wheel 150 of the to generate a braking force.

Since the braking force generated in this way increases in proportion to the weight of the user, the user can gradually lower the user regardless of the weight of the user.

Furthermore, the braking plate 160 generates a braking force while contacting all of the first and second braking wheels 140 and 150, and the braking structure including the braking plate 160 and the first and second braking wheels 140 and 150 may include the first and second braking wheels 140 and 150. As it is configured on both sides of the two pulleys (110, 120) it is possible to increase the stability.

On the other hand, in the emergency escape process, the user can adjust the descent speed through the operation of the lever (193).

That is, when the user rotates the shaft member 191 through the operation of the lever 193, the second elastic member 202 is pressed by the rotation of the cam member 192 installed on the shaft member 191, 2 The force transmitted to the brake plate 160 through the elastic member 202 acts in the direction in which the brake plate 160 is pushed up, and thus, between the brake plates 160 and the first and second brake wheels 140 and 150. The braking force that is formed is reduced and the user can adjust it to descend quickly.

9 shows an exemplary view showing the magnitude of the braking force generated when the contact surface of the brake plate is rubbed against the inclined surface of the brake wheel.

An exemplary view showing the magnitude of the braking force generated when the brake plate and the brake wheel are in contact with each other is shown.

In Figure 9, W is the force applied to the braking plate due to the user's weight, θ ₁ is the angle of inclination of the contact surface, and when the frictional load acting on the contact surface is F ₁ , 2F ₁ sinθ ₁ = W, F ₁ the lower the θ ₁ is small close to zero, the greater the force to be determined to infinity when converted to = W / 2sinθ _1.

FIG. 10 shows an exemplary view showing the magnitude of the braking force generated when the braking plate is rubbed against the two braking wheels.

In Figure 10 W is the force applied to the braking plate due to the user's weight, θ2 is the angle of inclination of the side of the brake, and the frictional load acting on the brake wheel due to the contact of the braking plate and the brake wheel is F ₂ , 2F ₂ sinθ ₂ = ｗ, F ₂ = W / 2sinθ ₂ When judging from the θ ₂ becomes smaller and closer to 0, the force increases infinity.

Thus, the friction loads F ₁ and F ₂ have a double V groove brake braking force by θ ₁ and θ₂, and the angles θ ₁ and θ ₂ of the V grooves are comparable to the gear speed increase ratio for doubling the braking force in the gear method. The smaller the angle, the greater the ability.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

<Explanation of symbols for main parts of the drawings>
100: frame 110: first pulley
120; Second pulley 130: fixing member
131: ring 140: first braking wheel
141: first groove 150: second braking wheel
151: second groove 160: braking plate
161: connecting portion 162: braking portion
1621: contact surface 170: belt
180: connecting member 190: speed control mechanism
191: shaft member 192: cam member
193: lever 201: first elastic member
202: second elastic member

Claims (7)

A first pulley 110 that rotates about a first rotational axis S1 having a horizontal posture and on which the first wire W1 is wound;
A second pulley 120 rotating around a second rotation shaft S2 having a parallel posture while being spaced apart from the first rotation shaft S1 and having a second wire W2 wound thereon;
It is disposed on the first pulley 110 and the second pulley 120, and is connected to the first wire (W1) and the second wire (W2), the fixed with a ring 131 is coupled to the fixed structure Member 130;
The first groove 141 is installed on the first rotation shaft (S1) to rotate together with the first pulley 110 at the side of the first pulley 110, the first groove 141 made of a V-shaped cross-section around the circumference Braking wheel 140;
The second groove is installed on the second rotation shaft (S2) to rotate together with the second pulley 120 at the side of the second pulley 120, the second groove 151 having a V-shaped cross section formed around the circumference Braking wheel 150; And
It is arranged to have a structure that can move in the vertical direction between the first braking wheel 140 and the second braking wheel 150, and is connected to the belt 170 is provided for the user to wear and lower by the user's weight The first and second brake wheels 140 and 150 are in contact with the first and second brake wheels 140 and 150 through the V-shaped contact surface 1621, and the braking plate 160 generates a braking force.
The braking plate 160,
It is made to move freely up and down between the first braking wheel 140 and the second braking wheel 150 having a width narrower than the interval between the first braking wheel 140 and the second braking wheel 150. A connection part 161 to which the belt 170 is connected; And
It is formed in an integrated structure on the upper end of the connecting portion 161, it is formed in a V-shaped structure of the inverted triangle, both sides (162a, 162b) is the first groove 141 and the second groove when the braking plate 160 is lowered Is inserted into the (151) is made to generate a braking force, the V-shaped contact surface (1621) formed to be inclined corresponding to the inclined surfaces (141a, 141b) of the first groove 141 and the second groove 151 both sides Braking part (162) formed in (162a, 162b); V-groove brake damping device consisting of. delete The method according to claim 1,
The first braking wheel 140, the second braking wheel 150, and the braking plate 160 are each formed in two to form a braking structure on both sides of the first pulley 110 and the second pulley 120. ,
The two brake plate 160 is connected to each other by a connecting member 180, V-groove brake gangbang characterized in that configured to behave together. The method according to claim 1,
V-brake brake type gangbang further comprising; a speed adjusting mechanism (190) for adjusting the lowering speed by changing the braking force through the load control acting on the braking plate (160). The method according to claim 4,
The speed control mechanism 190,
A shaft member 191 rotatably installed in a horizontal position at a lower end of the frame 100 constituting the stirrer;
Formed or installed on the shaft member 191 rotates with the shaft member 191, and comprises an outer circumferential surface in contact with the braking plate 160 of the braking plate 160 during the rotation of the shaft member 191 A cam member 192 for adjusting an action load; And
And a lever (193) installed at the outer end of the shaft member (191) to enable the user to easily rotate the shaft member (191). The method according to claim 1,
And a first elastic member 201 disposed to press the braking plate 160 to prevent the braking plate 160 from being separated from the first and second braking wheels 140 and 150. V-groove brake descending machine. The method according to claim 5,
A second disposed between the braking plate 160 and the cam member 192 and installed to move together with the braking plate 160 to adjust a load applied to the braking plate 160 through the cam member 192. An elastic member (202); V-groove brake gangbang characterized in that it further comprises.

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