CN110552544A

CN110552544A - steel wire rope braking device and vertical rod lifting system comprising same

Info

Publication number: CN110552544A
Application number: CN201811431905.9A
Authority: CN
Inventors: 金应旭; 金仁教
Original assignee: Ethan Corp
Current assignee: Ethan Corp
Priority date: 2018-06-04
Filing date: 2018-11-28
Publication date: 2019-12-10
Anticipated expiration: 2038-11-28
Also published as: KR101944453B1; CN110552544B

Abstract

The wire rope brake device to which the present invention is applied includes: a fixed pulley part which supports the wire rope in a manner of moving relative to the base; a brake unit for selectively braking the wire; a tension detecting part including a rotating bracket rotatably mounted to the base, a rotating pulley movably mounted to the rotating bracket and supporting the wire, and an elastic part rotating the rotating bracket in one direction; and a link portion that converts the rotational motion of the tension detecting portion into a parallel motion and transmits the parallel motion to the braking portion.

Description

steel wire rope braking device and vertical rod lifting system comprising same

Technical Field

the invention relates to a steel wire rope braking device and a vertical rod lifting system comprising the same.

Background

in general, a device such as a CCTV or a lighting tower is installed in a major industrial facility such as an estuary, an airport, or an arena, or a place where many users use it, and is used for securing national security.

in general, a lighting tower is a large-sized lighting apparatus for ensuring smooth night activities and safety of persons by being installed in a wide-area facility such as a stadium or a performance hall, and is installed at a tower top at a higher position to be able to illuminate the inside of the stadium or the performance hall and constitutes independent apparatuses, respectively.

However, when the installation, maintenance, bulb replacement, and other operations are performed on the lighting mechanism of the tower top lighting device, the operations must be smoothly performed using a mechanism or device such as an overhead ladder, a crane, or a special vehicle equipped with a short-range elevator device, and in this case, not only is a long operation time required due to the troublesome and inconvenient operations of installing the lighting lamp, disassembling the base and the connection mechanism, maintaining the lighting lamp, and replacing the lighting lamp, but also a fall accident may occur due to carelessness of an operator, and the safety and commercial value of the product may be reduced.

As a technique developed to solve the above problem, there is a lifting type lighting tower equipped with a lifting structure as described in patent documents 1 to 3.

Patent document 1 includes: a front pillar having a plurality of connection pipes penetrating therethrough and having guide rails formed on one outer side surface thereof in a longitudinal direction, and having upper and lower ends coupled to and separated from each other; a lifting bracket which is connected with each other in a way of vertically moving up/down along a guide rail of the front column and can be used for installing a plurality of illuminating lamps at specific positions set at certain intervals; and a driving part which connects one end of the wire rope at the upper end of the central point of the lifting bracket and makes the other end move downwards along the tubular channel at the upper end of the front column and is connected to the winding roller, and the winding roller can rotate forwards or backwards through selective operation, thereby winding or releasing the wire rope and making the lifting bracket move upwards/downwards.

In patent document 2, a fixing device for fixing a bracket includes: a pair of fixing parts, which are provided with elastic pieces upwards at two sides of the central part of the bracket which is lifted along the guide rail formed at one side of the front column and form fixing pins inwards at the upper end parts of the elastic pieces; a pair of blocking parts, which are formed with an inclined surface in front of the lower side and contacted with the fixed pin of the fixed part when the bracket is lifted, thereby bending the elastic sheet forwards, forming a fixed groove on the upper side of the inclined surface and a blocking sheet on one side of the rear of the fixed groove, forming a guide surface inclined backwards on the lower side of the rear of the blocking sheet and fixing the guide surface on two sides of the upper part of the socket bracket; and a pair of stoppers which are connected to each other on the upper side of the stopper and have an outer side surface opened, and which are formed with protrusions inclined downward and forward and backward so as to prevent the stoppers from falling off backward when the fixing pins are raised.

Patent document 3 includes: a drive motor part for forming a specific 1 st rotation speed; a speed reducer part which is combined with the upper end of the driving motor part and is used for transmitting the 2 nd rotating speed for adjusting and reducing the 1 st rotating speed to the 1 st gear arranged on one side; and a drum part coupled to an upper end of the reducer part, provided with a 2 nd gear rotated in mesh with the 1 st gear on one side, and winding or releasing the wire rope by power generated by a 2 nd rotation speed transmitted to the 2 nd gear; wherein, the driving motor part, the speed reducer part and the winding drum part are vertically and integrally installed in the lower end of the front column.

The conventional elevating type lighting tower as described above can lower the elevating bracket and raise it again after performing maintenance work when abnormality occurs in the lighting device by providing the elevating bracket and installing the lighting device in the elevating bracket, thereby facilitating the performance of maintenance work.

However, the conventional elevating type lighting tower is not only required to be equipped with a guide rail alone, but also may cause a problem that the elevating bracket shakes during the elevating process because of insufficient binding force between the guide rail for supporting the elevating of the elevating bracket and the elevating bracket, and may be more likely to cause the lowering of the elevating bracket when the wire of the elevating device is broken, thereby causing damage to the lighting device itself and even the surrounding structure.

prior art documents

patent document

(patent document 001) Korean registered patent No. 10-0251422

(patent document 002) Korean registered patent No. 10-0226229

(patent document 003) Korean registered patent No. 10-1070196

Disclosure of Invention

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a wire brake device which can stop a wire connected to a lifting bracket (moving part) even when the wire connected from a driving device to the lifting bracket (moving part) is broken, thereby preventing the lifting bracket (moving part) from falling, and a vertical rod lifting system including the wire brake device.

In order to achieve the above object, a wire brake device according to the present invention includes: a fixed pulley part which supports the wire rope in a manner of moving relative to the base; a brake unit for selectively braking the wire; a tension detecting part including a rotating bracket rotatably mounted to the base, a rotating pulley movably mounted to the rotating bracket and supporting the wire, and an elastic part rotating the rotating bracket in one direction; and a link portion that converts the rotational motion of the tension detecting portion into a parallel motion and transmits the parallel motion to the braking portion.

the brake unit includes: a connecting bracket connected with the connecting rod part; a pair of wedge members horizontally movably connected to the connecting bracket; and a guide bracket for selectively braking the wire by guiding the pair of wedge members; it is preferable.

Above-mentioned linking bridge includes: the vertical long hole is used for the steel wire rope to pass through; and a pair of lateral long holes for one end of the pair of wedge members to pass through; it is preferable.

The elastic part includes: a spring mounted on the base; and a lateral protrusion which is coupled to an end of the spring to rotate the rotation bracket; it is preferable.

The elastic part further comprises: a lifting block coupled to an end of the spring; preferably, the protrusion is coupled to both sides of the elevating block and installed through a long hole formed in the rotating bracket.

Preferably, the pair of wedge members have serrations formed on inner side surfaces thereof.

The pair of wedge members may have guide grooves formed on upper and lower surfaces thereof, and the guide holder may have guide ribs formed on upper and lower surfaces thereof to be engaged with the guide grooves.

the above-mentioned connecting rod portion includes: a pair of links, both ends of which are rotatably connected to the rotating bracket and the connecting bracket; it is preferable.

The invention is applicable to a vertical rod lifting system, comprising: a vertical bar (Pole) standing on the ground; a fixing part which is mounted on the upper end part of the vertical rod and is provided with a 1 st pulley and a 2 nd pulley for guiding the movement of the steel wire and changing the extending direction of the steel wire; a moving part which is provided with a main body having a center part penetrated by the vertical rod, moves up and down along an outer surface of the vertical rod by being connected to one end of the wire, and contacts the fixed part when positioned near an upper end part of the vertical rod; a winding unit which is attached to a lower end portion of the vertical rod, fixes the other end of the wire rope, and is provided with a winding drum for winding the wire rope; and a braking device installed between the 1 st pulley and the 2 nd pulley and braking the wire when the tension applied to the wire is lost.

The braking device includes: a brake unit for selectively braking the wire; a tension detecting part which rotates in a single direction when the wire connected to the winding part is broken; and a link part converting the rotational motion of the tension detecting part into a parallel motion and transmitting the parallel motion to the braking part; it is preferable.

The tension detection unit includes: a rotary bracket rotatably mounted to the base; the 2 nd pulley mounted to the rotating bracket and movably supporting the wire; and an elastic part which makes the rotating bracket rotate in a single direction; it is preferable.

The vertical rod lifting system applicable to the invention further comprises: a pair of locking units respectively installed on the fixed part and the moving part, and fixing the moving part to the fixed part when the fixed part is connected with the moving part; it is preferable.

The elastic part includes: a spring mounted on the base; a lifting block coupled to an end of the spring; and a lateral protrusion which is coupled to both sides of the lifting block to rotate the rotating bracket; preferably, the lateral protrusions are attached to the rotary bracket through long holes formed in the rotary bracket.

By applying the wire rope braking device and the vertical rod lifting system comprising the wire rope braking device, the wire rope connected to the lifting bracket can be immediately stopped when the wire rope on one side of the winding part is broken, so that the lifting bracket is prevented from falling.

Drawings

Fig. 1 is a schematic configuration diagram of a vertical rod elevating system to which an embodiment of the present invention is applied.

Fig. 2 and 3 are schematic configuration diagrams for explaining the operation principle of the vertical rod elevating system of fig. 1.

Fig. 4 is a schematic system diagram for explaining an electrical control system applicable to the vertical rod raising and lowering system of fig. 1.

Fig. 5 is an oblique view illustrating a wire brake device to which an embodiment of the present invention is applied.

Fig. 6 is an oblique view showing the lateral bracket and the upper guide bracket in fig. 5 separated from each other.

Fig. 7 is an oblique view of the brake apparatus as viewed from above from the right side after the upper guide bracket in fig. 5 is removed.

Fig. 8 is an oblique view of the brake device as viewed from the right side of fig. 5.

FIG. 9 is an oblique view illustrating various embodiments of the cleat component.

Fig. 10 is a perspective view illustrating an unbraked state of the brake device when the wire is under tension.

Fig. 11 is a perspective view illustrating a braking state of the brake device when the wire rope is not under tension.

Description of the symbols

10: vertical bar (Pole)

11: wire spool

12: no. 1 steel wire rope

13: 2 nd steel cable

20: fixing part

30: exercise part

32: CCTV camera

33: road lamp

50: hoisting part

100: brake device

110: base seat

120: fixed pulley

121: vertical support

123: transverse support

125: no. 1 pulley

130: brake part

135: bottom bracket

140: lower guide bracket

142: inner inclined plane

145: guide fin

150: upper guide bracket

152: inner inclined plane

155: guide fin

160: wedge component

162: clamping groove

163: horizontal groove

165: guide groove

166: projection

167: connecting support

168: transverse slot

169: vertical slot hole

170: connecting rod part

172: connecting rod

180: tension detecting part

182: rotating support

183: combination bar

184: pulley shaft

185: 2 nd pulley

186: rotary supporting block

187: rotating shaft

190: spring

192: fixed shaft

194: lifting block

196: side projection

Detailed Description

next, preferred embodiments to which the present invention is applied will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the vertical rod elevating system 100 includes: a rod 10, a fixed part 20, a moving part 30, a winding part 50, and a pair of locking units. Furthermore, the vertical rod elevating system 100 can further include a CCTV camera module mounted on the moving part 30. The fixed portion 20 can be referred to as a lifter fixed portion and the moving portion 30 can be referred to as a lifter moving portion.

Next, each constituent element will be specifically described. First, the Pole (Pole)10 is erected on a structure installed on the ground. The ground mounted structure includes a concrete base 70. The vertical rod 10 can be installed in a perpendicular manner to the ground by inserting a plurality of anchor bolts 71 installed to the concrete base 70. The stem base 10a at the lower end of the stem 10 is provided with a plurality of small holes for inserting the anchor bolts 71, and is coupled and fixed to the ground by the anchor bolts 71, bolts, and the like.

A moving part support base 16 for forming one side or a lower side boundary of a moving part 30 that moves along an outer surface of the vertical rod 10 can be attached to a lower end portion of the vertical rod 10. The moving part support base 16 can be attached to the outer surface of the stem 10 in a wing-like form or a ring-like form projecting in a direction substantially perpendicular to the outer surface. A lowering limit switch 17 is mounted on the moving part support base 16. The lowering limit switch 17 may be referred to as a 2 nd switch, and determines a lower limit of movement of the moving portion 30 by stopping the operation of the winding portion 50 by contact with or pressing the moving portion 30 when the moving portion 30 is lowered.

A fixing portion 20 is attached to the uppermost end of the upper end of the stem 10 facing the stem base 10 a. The lightning rod 26 can be attached to the fixing portion 20. The fixed portion 20 forms one side or an upper side boundary of the moving portion 30 that reciprocates along the surface of the vertical rod 10. In one embodiment, the securing portion 20 has a cross-sectional area greater than the cross-sectional area of the stem 10 and is mounted around the other end of the stem 10.

At least one pulley 125, 185 for guiding the movement of the wire attached inside the vertical rod 10 and changing the extending direction of the wire is attached to the fixing portion 20. The pulleys 125, 185 can include: a support portion fixed to the fixing portion 20; and a rotating part rotatably coupled to the supporting part. With the above-described configuration, the pulleys 125 and 185 can change the extending direction of the wire extending from the lower end portion side to the upper end portion side of the vertical rod 10 by about 180 °.

The moving portion 30 is provided with a guide frame 31 having a substantially central portion penetrated by the vertical rod 10. The guide frame 31 forms the body of the moving part 30 and can be provided with holes or grooves through which the vertical bars 10 can pass. With the above-described configuration, the moving portion 30 can be arranged substantially symmetrically about the vertical rod 10 around the outer peripheral surface of the vertical rod 10 in a ring-like manner, and therefore, even when a CCTV camera or an illumination device is attached to one side of the moving portion 30, the moving portion can be stably moved up and down along the outer surface of the vertical rod 10.

In particular, the guide roller 35 can be installed in the moving part 30, whereby the moving part 30 can be more stably reciprocated on the outer surface of the vertical rod 10. The guide roller 35 is mounted on the moving portion 30, and can be elastically contacted and completely attached to the outer surface of the vertical bar 10 by a roller spring 36 mounted on the moving portion 30. By using the roller spring 36, smooth movement of the moving portion 30 can be ensured even in the case where it is not smooth enough because of adhesion of, for example, dust, contaminants, etc. on the outer surface of the vertical rod 10.

the moving part 30 as described above can be stably reciprocated along the outer surface of the vertical rod 10 by the wires 12, 13 and the like connected to the winding part 50.

In the moving part 30, for example, a CCTV camera module, an illumination device, and the like can be installed. The CCTV camera module includes a camera 32 and a camera receptacle 32B. The lighting device can include a street light 33 mounted on the underside of the camera 32.

a damper 37 arranged in the direction of the lower end of the vertical rod 10 can be attached to the moving part 30. A buffer 37 is mounted on a lower surface of the guide frame 31 to prevent damage caused by contact between the moving part 30 and the moving part support base 16 when the two are brought into contact.

The winding part 50 can be installed inside or outside the vertical bar 10. In the present embodiment, the winding part 50 is installed inside the vertical bar 10. The winding unit 50 is a device for winding or releasing a wire, and is installed inside the vertical rod 10 at a position adjacent to the lower end of the vertical rod. The hoisting unit 50 may be constituted by a Winch (Winch). A drum for winding the wire is provided in the winding part 50, and a rotation shaft of the drum can be combined with a reduction gear 51, and the reduction gear 51 can be connected to a driving motor 60 through a belt 52 and rotated thereby. The winding unit 50 can be manually operated by coupling a rotating handle 53 to the rotation shaft of the drum. The turning handle 53 refers to a tool capable of turning the drum by the force of the operator and thereby winding or releasing the wire rope to or from the drum, and can also be referred to as a winding handle.

both ends are connected to the moving part 30 and the wire rope in the winding part 50, respectively, for transmitting the force generated in the winding part 50 to the moving part 30. In the present embodiment, the wire includes a plurality of upper wires or 1 st wires 12 connected to the moving part 30 and a lower wire or 2 nd wire 13 connected to the winding part 50. In one embodiment, the 1 st wire 12 includes at least 2 or more wires in order to effectively transmit the force of the winding part 50 to the moving part 30 reciprocating up and down around the vertical rod 10 along the outer surface of the vertical rod 10. The 1 st wire 12 preferably comprises 4 wires.

In this embodiment, the winding part 50 is connected to one end of one 2 nd wire 13, the other end of the 2 nd wire 13 is connected to one side surface of the wire spool 11, one ends of at least two 1 st wires 12 are connected to the other side surface opposite to one side surface of the wire spool 11, the extending directions of the middle portions of the at least two 1 st wires 12 are converted into opposite directions by pulleys 125 and 185, respectively, and the other ends of the at least two 1 st wires 12 are connected to different portions of the moving part 30, respectively. With the above-described configuration, it is possible to effectively and uniformly transmit the force of the winding part 50 to the moving part 30 and thereby ensure smooth movement of the moving part 30.

The pair of locking units includes: a fixing pin 34 attached to the moving part 30; and a fixing pin locking device 24 attached to the fixing portion 20 so as to face the fixing pin 34. The anchor pin 34 may have a rod-like shape protruding from the guide frame 31 toward the fixing portion 20, and a concave-convex portion that engages with the anchor pin locking device 24 may be provided at a distal end portion of the anchor pin 34. The anchor pin locking device 24 may be referred to as an anchor pin locking portion, and may be attached so as to protrude inward of the anchor pin socket 21 for inserting the anchor pin 34. In the case described above, the fixing pin locking means 24 will engage with the fixing pin 34 inserted into the fixing pin receptacle 21, thereby firmly fixing the moving part 30 into the fixing part 20.

At this time, the locking switch 25 can be attached to the anchor pin socket 21. The lock switch 25 can be referred to as a 1 st switch 25. The lock switch 25 can stop the operation of the driving part, that is, the winding part 50 coupled to the driving motor 60 and the reduction gear 51 by contacting or pressing the tumbler pin 34 when the lock pin 34 is inserted into the tumbler socket 21 or when the tumbler pin 34 is coupled to the tumbler pin locking device 24. With the above-described configuration, the lock switch 25 can stop the operation of the winding part 50 when the lock pin 34 engages with the lock pin locking device 24 and thereby determine the upper limit of the movement part 30.

On the other hand, the fixing pin locking device 24 can engage with the locking pin 34 by the switching operation of the locking switch 25 to stably fix the moving part 30, or can release the engagement with the fixing pin 34 by a control signal from an electric control device built in the control box 14.

In the present embodiment, the moving part 30 for mounting the CCTV camera and ascending and descending around the vertical rod 10 as a central axis can smoothly move toward the fixed part 20 on the outer surface of the vertical rod 10 along with the wire wound into the winding drum of the winding part 50 by the driving motor 60 and the reduction gear 51, and is fixed by the pair of locking units at a position adjacent to the fixed part 20. Further, the moving part 30 can be naturally lowered from the fixed part 20 to the lower end of the vertical rod 10 by the gravity of the moving part 30 along with the wire released from the drum of the winding part 50. When the moving part 30 is mounted on the moving part support base 16, the operator can stand on the ground to conveniently and efficiently inspect or repair the camera 32 and the camera socket 32B, the street lamp 33, and the like.

as shown in fig. 2 and 3, a concrete base is cast on the ground to which the vertical rod 10 is to be installed, an anchor bolt 71 is embedded in the concrete base, and then the vertical rod base 10a is fixed by the anchor bolt, so that the vertical rod 10 is vertically installed on the ground.

inside the circular or polygonal vertical rod 10, a winding part 50 for winding or releasing the wire 13 is installed. The lower wire 13 wound around the winding unit can be connected to one or more upper wires 12 via the wire spool 11 that connects the upper wire and the lower wire. The upper wire 12 is connected to the lifter moving part 30 via pulleys 125, 185 fitted into the lifter fixing part 20. In the present embodiment, the lifter moving part 30 to which the camera 32 is mounted is also lowered or raised according to the length of the lower wire 13 wound or unwound in the winding part 50.

the winding unit 50 for winding or unwinding the wire is connected to a reduction gear 51 attached to a rotation shaft of a winding drum of the winding unit and a driving motor 60 via a belt 52, a gear, a chain, or the like, and rotates together with the driving motor 60 when the driving motor 60 rotates. At this time, the driving motor 60 can be started by the switch operation installed in the control box 14, and can also be started by the operation of the remote controller 41 that is connected to the electrical control device inside the control box other than the operation switch 42 installed in the control box 14 and can be remotely operated. Further, the driving motor can also be stopped from moving upward by a lock switch 25 installed in the lifter fixing portion 20, other than the switch installed in the control box 14, and stopped from moving downward by a descent limit switch 17 installed in the moving portion support stand 16 on the vertical rod. With the above-described configuration, it is possible to restrict the movement of the moving part, which is installed so as to surround the outer surface of the upper portion side of the vertical rod 10 and reciprocates on the outer surface of the upper portion side of the vertical rod, by the lock switch 25 and the descent limit switch 17, thereby improving the stability of the vertical rod system.

Further, when the driving motor 60 is not used or the driving motor fails to normally operate due to a failure, the movement portion 30 can be manually lifted and lowered by rotating the winch 50 shaft using the rotation handle 53.

The lifter fixing portion 20 is provided with 1 or more pulleys 125 and 185 for smoothly moving the upper wire 12, and a pin socket 21 for fixing the pin 34 attached to the lifter moving portion 30 is attached to a part of the lifter fixing portion 20. Further, a lock switch 25, which operates when the tumbler pin 34 completes locking with the tumbler pin locking means 24, is installed inside or outside the tumbler pin receptacle. Furthermore, a lightning rod 26 for protecting the vertical rod system from lightning strikes can be mounted on the upper end of the vertical rod, i.e. the upper end of the fixing portion.

further, the lifter moving portion 30 is configured such that a camera holder 32B for mounting the camera 32 and a locking pin 34 engageable with the locking pin socket 21 of the lifter fixing portion 20 are attached to a guide frame 31 surrounding the vertical bar 10 in a manner allowing smooth lifting. A damper 37 is attached to a lower side of the moving portion support base 16 to absorb an impact with the moving portion support base 16 when the guide bracket 31 is lowered to the ground. In order to ensure that the guide frame 31 can smoothly move along the inclined surface of the vertical rod 10 formed in a tapered shape, the plurality of guide rollers 35 can be moved in close proximity to the vertical rod 10 by attaching 1 or more rod springs 36.

The electric control device 40 can be installed inside or outside the stem 10, can include an operation switch 42 and a light bulb 43, and can further include a remote controller 41 that can be remotely operated. At this time, in order to facilitate connection and disconnection of the electric wires connected to the camera 32, a plug or male connector 15a and a receptacle or female connector 15b can be provided at intermediate portions thereof. The communication control box 80 for controlling the video signal of the camera and the like can be used by being mounted on the vertical rod 10, and the function of the electric control device 40 can be provided inside the communication control box.

As shown in fig. 4, the electric control device 40 is a device for controlling the drive motor 60. The operator can drive the stem raising/lowering system by operating the operation button 42 of the electric control device 40 or the operation button of the remote controller 41. When the vertical rod elevating system is operated, when the moving part 30 reaches the position of the fixed part 20 along with the wire wound in the winding part 50, the operation of the driving motor 60 can be stopped by the opening and closing operation of the upper limit lock switch 25. Similarly, when the moving part 30 reaches the position of the moving part supporting base 16 along with the wire released from the winding part 50, the operation of the driving motor 60 can be stopped by the opening and closing operation of the descent limit switch 17 contacting with the moving part 30.

The power and image signals of the camera 32, the camera socket 32B, and the operation control signals of the street lamp 33 are connected to the side of the control box 14 through a connector structure 15c for easy connection and disconnection. The control box 14 can house therein the electric control device 40 and other mechanical devices.

Next, a specific configuration of a wire brake device to which a preferred embodiment of the present invention is applied will be described in detail with reference to fig. 5 to 9.

As shown in fig. 5, a wire brake device 100 to which the present invention is applied includes: a fixed pulley part 120, a brake part 130, a link part 170, and a tension detection part 180. The above components can be mounted to the base 110 provided on the fixing portion 20.

The fixed pulley unit 120 supports the wire 12 so as to be movable relative to the base 110. For this purpose, the fixed sheave portion 120 may include: a pair of vertical brackets 121 fixed to the upper side of the base 110; a lateral bracket 123 coupled to upper sides of the pair of vertical brackets 121 by a plurality of bolts; and a 1 st pulley 125 rotatably attached about a horizontal axis between the pair of vertical brackets 121.

The pair of vertical brackets 121 are formed in a rectangular plate shape having a certain thickness and can have a plurality of bolt coupling holes formed in the upper side thereof. A shaft hole, in which the 1 st pulley is rotatably installed, is formed at the center of the pair of vertical brackets 121.

The horizontal bracket 123 is formed in a rectangular plate shape having a smaller thickness than the vertical bracket 121, and a plurality of bolt through holes can be formed.

The pair of vertical brackets 121 and the lateral brackets 123 are formed of 3 independent members for easy assembly, but may be integrally formed.

The vertical bracket 121 and the horizontal bracket 123 can be made of a metal material, and the 1 st pulley 125 can be made of a plastic material.

in addition, a cutting groove 112 for preventing interference with the wire 12 downwardly after passing through the 1 st pulley 125 can be formed at one side of the base 110. The cutting groove 112 may be formed in a U-shape as a whole.

The braking unit 130 can selectively brake the wire 12 according to the tension detecting unit 180.

The stopper 130 may include: a connecting bracket 167 connected to the link portion 170; a pair of wedge members 160 connected to the connection bracket 167 in a horizontally movable manner; and guide brackets 140 and 150 for selectively braking the wire 12 by guiding the pair of wedge members 160.

First, the guide brackets 140 and 150 guide the movement of the pair of wedge members 160, and guide grooves for guiding a portion of the pair of wedge members 160 are formed therein.

To align the height at which the wire 12 passes between the pair of cleat members 160, the base bracket 135 can be first mounted to the base 110, and then the guide brackets 140, 150 can be mounted to the base bracket 135.

The base bracket 135 is formed in an overall "Contraband" shape, and can be fixed to the base 110 by coupling a plurality of bolts into extensions formed by extending the lower end portion thereof in both side directions.

Although the guide brackets 140 and 150 may be formed of a single member, it is preferable to assemble the lower guide bracket 140 and the upper guide bracket 150 by dividing them into two parts because the inner structure thereof is complicated and it is difficult to manufacture and assemble the guide brackets.

A guide groove into which the lower half of the pair of wedge members 160 is introduced is formed at the inner center of the lower guide bracket 140, and a plurality of through holes can be formed at both side ends and mounted into the bottom bracket 135 by a plurality of bolts.

a plurality of bolt coupling holes for fixing the upper guide bracket 150 to the inside of the plurality of through holes may be formed in the lower guide bracket 140.

A plurality of through holes corresponding to the plurality of through holes of the lower guide bracket 140 are formed in the upper guide bracket 150, thereby being capable of being fixed to the lower guide bracket 140 by a plurality of bolt couplings.

The through hole of the lower guide bracket 140 and the through hole of the upper guide bracket 150 may be formed in a shape that the bolt head can be completely inserted.

The guide groove formed between the lower guide bracket 140 and the upper guide bracket 150 may have a width gradually increasing with respect to the longitudinal direction of the wire 12. In other words, the inner inclined surface 142 of the lower guide bracket 140 and the inner inclined surface 152 of the upper guide bracket 150 are inclined to be gradually wider toward the connection bracket 167.

Correspondingly, the outer side surfaces of the pair of wedge members 160 are also formed in inclined surfaces that are slidable between the inner inclined surfaces 142 and the inner inclined surfaces 145.

on the other hand, the facing inner side surfaces of the pair of wedge members 160 have a surface form parallel to each other. The wire 12 passes through the pair of wedge members 160 at an intermediate height between the inner surfaces thereof, and the pair of wedge members 160 can selectively press and brake the wire 12 to be immovable.

As shown in fig. 7, the pair of wedge members 160 are respectively provided with projections 166 formed to extend toward the side of the connecting bracket 167, and the pair of wedge members 160 are coupled to the connecting bracket 167 to be movable in the width direction by passing the projections 166 through a pair of lateral long holes 168 formed in the connecting bracket 167.

The size of the head of the protrusion 166 is larger than the height of the transverse long hole 168, so that the pair of wedge members 160 can be pulled when the connection bracket 167 is moved in the length direction. The protrusion 166 may be a bolt passing through the transverse long hole 168 and coupled to coupling holes respectively formed at the pair of wedge members 160.

Further, a vertically long hole 169 through which the wire 12 can pass can be provided in the center portion of the link bracket 167. The vertically long hole 169 serves to guide the movement of the wire 12, and allows the passage height of the wire 12 to be changed within a certain range.

The tension detecting unit 180 may include: a rotating bracket 182 rotatably mounted to the base 110; a rotating pulley 185 mounted on the rotating bracket to movably support the wire 12; and an elastic part for rotating the rotating bracket in a single direction.

The rotation bracket 182 can be rotatably coupled by a pair of bolts to an outer side surface of a rotation support block 186 that is coupled and fixed to the base 110 by a plurality of bolts. As shown in fig. 6 and 7, the entire rotation support block 186 may be formed in a rectangular parallelepiped shape. A plurality of through holes for bolt fastening can be formed in the rotation support block 186 so as to penetrate in the vertical direction. Further, coupling holes for bolt coupling are formed at both side surfaces of the rotation support block 186, so that the rotation bracket 182 can be rotatably mounted in the rotation support block 186 by a pair of bolts 187. The pair of bolts 187 are laterally coupled to constitute a rotating shaft 187 of the rotating bracket 182.

The swivel bracket 182 is formed of a pair of plate-like shapes having a substantially rectangular shape, and the coupling rod 183 can be coupled to the pair of plate bodies by inserting the coupling rod 183 between the pair of plate bodies and coupling the plate bodies at both sides with bolts through-holes formed in the swivel bracket 182.

Inside the rotating bracket 182, a pulley shaft 184 is installed below the coupling rod 183 by a pair of bolts and a 2 nd pulley 185 is rotatably installed in the pulley shaft 184. The 2 nd pulley 185 can rotate together with the rotating bracket 182 by means of the wire 12 and the elastic portion. The 2 nd pulley 185 can be made of plastic material, as with the 1 st pulley 125.

The elastic portion provides an elastic force for rotating the rotating bracket 182 in the lifting direction. For this, the elastic part can include: a spring 190 mounted on the base; and a side projection 196 coupled to an end of the spring to rotate the rotation bracket 183.

The spring 190 can be a wire spring that provides an elastic force upward as shown in fig. 8. The lower end of the spring 190 can be directly fixed to the base 110, but it is preferable to fix the fixed shaft 192 to the base 110 and to install the spring into the fixed shaft 192 to prevent the spring from moving in a horizontal direction. The fixing shaft 192 can be constituted by a bolt coupled into a coupling hole formed on the base 110.

The elastic part further includes: a lifting block 194 coupled to an end of the spring 190; it is preferable. The elevating block 194 is formed in a rectangular parallelepiped shape having a predetermined thickness, and a through hole through which a bolt constituting the fixed shaft 192 passes can be formed at the center thereof.

The side protrusions 196 may be directly coupled to the spring 190, and when the lifting block 194 is provided, the side protrusions 196 may be protrusions coupled to both side surfaces of the lifting block 194 or bolts coupled to both side surfaces of the lifting block 194. When belonging to the latter, the upper end 190 of the spring does not need to be coupled to the elevator block 194 but only needs to be brought into contact therewith, and the elevator block 194 is installed in the fixed shaft 192 in such a manner as to be movable up and down.

The side projections 196 are installed to pass through the long holes 188 formed in the rotating bracket 182, and as described above, the side projections 196 can be configured by inserting a head-equipped bolt through the long holes 188 and coupling it to both side surfaces of the elevating block 194, the long holes 188 being formed in the horizontal direction. Since the rotation bracket 182 rotates about the rotation shaft 187 and the side projection 196 moves in the vertical direction, the side projection 196 can move relatively inside the long hole 188.

the link portion 170 may convert the rotational movement of the tension detecting portion 180 into a parallel movement and transmit the parallel movement to the braking portion 130. For this, the link portion 170 may include: a pair of links 172 whose both side ends are rotatably connected to the rotating bracket 182 and the connecting bracket 167.

One end portion of the link 172 can be rotatably coupled into the rotating bracket 182 by means of a bolt and a nut, and the other end portion of the link 172 can be rotatably coupled into the connecting bracket 167 by means of a bolt coupled to an outer side surface of the connecting bracket 167.

It is preferable that guide grooves 165 are formed on the upper and lower surfaces of the pair of wedge members 160, and guide ribs 145 and 155 that engage with the guide grooves are formed on the upper and lower surfaces inside the guide brackets 140 and 150.

The upper and lower surfaces of the shoe member 160 may be formed with guide grooves 165 having a rectangular cross section whose outer surface is parallel to each other. Further, a guide rib 145 corresponding to a guide groove 165 formed in the lower side of the pair of wedge members 160 may be formed to protrude from the upper side of the lower guide holder 140, and a guide rib 155 corresponding to a guide groove 165 formed in the upper side of the pair of wedge members 160 may protrude from the lower side of the upper guide holder 150.

By the combination structure of the guide groove 165 and the guide ribs 145 and 155 as described above, the pair of wedge members 160 can be moved away from each other when the pair of wedge members 160 is withdrawn from the guide brackets 140 and 150.

Further, the pair of wedge members 160 may be formed with serrations on the inner side. The serrations may be formed in the form of a plurality of grip grooves 162 formed long in the vertical direction on the inner surface of the wedge member 160. When the serrations are formed on the inner side surfaces of the pair of wedge members 160, a sufficient braking effect can be achieved even if the wire 12 is pressed with a relatively small force, as compared to the case where the serrations are not formed on the inner side surfaces of the pair of wedge members 160. This is because the frictional force between the wire 12 and the pair of wedge members 160 becomes large.

The clamping groove 162 may be formed in a groove shape having a semicircular cross section as shown in fig. 9 a. The clamping groove 162 may be formed in a trapezoidal cross section as shown in fig. 9 b. With the clamping grooves 162 as described above, when the pair of wedge members 160 compressively brakes the wire 12, the wire 12 can be more easily fixed by bending the inner side surfaces of the pair of wedge members 160.

In addition, the clamping groove 162 may be formed in a triangular sectional shape having different lengths of both sides as shown in fig. 9 c. In this case, the clamping groove 162 preferably has a longer side on the fixed pulley portion 120 side than on the tension detecting portion 180 side. This is because the pair of wedge members 160 are for press-braking the wire 12 moving from the tension detecting unit 180 side to the fixed sheave unit 120 side.

As shown in fig. 9d, a horizontal groove 163 having a substantially triangular cross section and being formed to be long in the horizontal direction may be additionally formed on the inner side surfaces of the pair of wedge members 160. The horizontal groove 163 may be formed at the same time as the clamp groove 162, or may be formed on the inner side surface of the flat state where the clamp groove 162 is not formed. The horizontal groove 163 not only enables the wire 12 to be inserted into the horizontal groove 163 to increase braking force at the time of braking, but also enables the wire 12 to be guided and fixed to an intermediate height when it is braked between the pair of wedge members 160.

Next, the operation of the wire brake device will be described with reference to fig. 10 and 11.

One end portion of the 1 st wire 12 passing through the 1 st pulley 125 and extending downward will be connected to the moving part 30, and the other end portion passing through the 2 nd pulley 185 and extending downward will be connected to the 2 nd wire 13 connected to the winding part 50.

In a normal state, as shown in fig. 10, the 1 st wire 12 connected between the moving part 30 and the winding part 50 is under tension, and thus the 1 st wire 12 pushes the 2 nd pulley 185 and the rotating bracket 182 downward. At this time, the rotation bracket 182 presses the side protrusion 196 and maintains the state in which the spring 190 is compressed, and at the same time, the pair of links 172 pulls the connection bracket 167, so that the pair of wedge members 160 are maintained in the state in which they are drawn out from the guide brackets 140 and 150 and separated from each other.

The 1 st wire 12 is divided into a plurality of links for supporting the moving part 30, and the 2 nd wire 13 is connected to the winding part 50 by one wire. Therefore, the 2 nd wire 13 is generally broken when the wire is broken during use. Even if one of the 41 st wires 12 is broken, the remaining 31 st wires 12 can support the moving part 30.

However, all the 1 st wires 12 are loosened when the 2 nd wire 13 is broken and cause the falling of the moving part 30, and thus must be prevented.

when the 2 nd wire 13 is broken or the 1 st wire 12 is broken between the spool 11 and the 2 nd pulley 185, the tension applied to the 1 st wire 12 is reduced. At this time, as shown in fig. 11, the spring 190 pushes the rotating bracket 182 upward and rotates, whereby the pair of wedge members 160 can be introduced into the guide brackets 140 and 150 through the pair of links 172, thereby approaching the pair of wedge members 160 and compressively braking the 1 st wire 12. Thereby, the 1 st wire 12 can continue to support the moving part 30 connected to the other side to prevent it from falling.

In the case where the 41 st wires 12 are included, the wire brake device can be attached to each of the 1 st wires 12. And 2 cable brake devices can be installed when 21 st cables 12 are included.

by applying the wire brake device of the present invention, the wire can be immediately braked and fixed when the tension applied to the wire is lost due to the breakage of one side of the wire, thereby preventing the wire from moving to one side.

By including the vertical rod elevating system to which the wire rope braking device of the present invention is applied, the wire rope can be immediately braked and fixed even if the wire rope connected to the winding part is broken, thereby preventing the moving part from falling.

Although the preferred embodiments to which the present invention is applied have been described above, the scope of the present invention is not limited to the specific embodiments described above, and those having ordinary knowledge in the art to which the present invention pertains can be appropriately modified within the scope described in the claims of the present invention.

Claims

1. a cable brake assembly, comprising:

a fixed pulley part which supports the wire rope in a manner of moving relative to the base;

a brake unit for selectively braking the wire;

A tension detecting part including a rotating bracket rotatably mounted to the base, a rotating pulley movably mounted to the rotating bracket and supporting the wire, and an elastic part rotating the rotating bracket in one direction; and the number of the first and second groups,

And a link part which converts the rotation of the tension detecting part into parallel movement and transmits the parallel movement to the braking part.

2. A wire rope brake apparatus as claimed in claim 1, wherein:

The brake unit includes:

A connecting bracket connected with the connecting rod part;

A pair of wedge members horizontally movably connected to the connecting bracket; and the number of the first and second groups,

And a guide bracket for selectively braking the wire by guiding the pair of wedge members.

3. A wire rope brake assembly as claimed in claim 2, wherein:

Above-mentioned linking bridge includes: the vertical long hole is used for the steel wire rope to pass through; and a pair of lateral long holes for allowing one end portions of the pair of wedge members to pass through.

4. A wire rope brake apparatus as claimed in claim 1, wherein:

The elastic part includes:

A spring mounted on the base; and the number of the first and second groups,

And a lateral protrusion coupled to an end of the spring to rotate the rotation bracket.

5. A wire rope brake apparatus according to claim 4, wherein:

the elastic part further comprises:

A lifting block coupled to an end of the spring;

Wherein the protrusions are coupled to both sides of the lifting block and installed through long holes formed in the rotating bracket.

6. A wire rope brake apparatus according to any one of claims 2 to 5, wherein:

the pair of wedge members are formed with serrations on an inner side surface.

7. A wire rope brake apparatus according to claim 6, wherein:

The pair of wedge members have guide grooves formed on upper and lower sides thereof,

the guide support has guide ribs formed on its inner upper and lower surfaces to engage with the guide grooves.

8. a wire rope brake assembly as claimed in claim 2, wherein:

The above-mentioned connecting rod portion includes: and a pair of links, both side ends of which are rotatably connected to the rotating bracket and the connecting bracket.

9. A vertical rod lifting system, comprising:

A vertical bar (Pole) standing on the ground;

A fixing part which is mounted on the upper end part of the vertical rod and is provided with a 1 st pulley and a 2 nd pulley for guiding the movement of the steel wire and changing the extending direction of the steel wire;

A moving part which is provided with a main body having a center part penetrated by the vertical rod, moves up and down along an outer surface of the vertical rod by being connected to one end of the wire, and contacts the fixed part when positioned near an upper end part of the vertical rod;

A winding unit which is attached to a lower end portion of the vertical rod, fixes the other end of the wire rope, and is provided with a winding drum for winding the wire rope; and the number of the first and second groups,

And a braking device installed between the 1 st pulley and the 2 nd pulley and braking the wire when the tension applied to the wire is lost.

10. The vertical rod lifting system according to claim 9, wherein:

The braking device includes:

A brake unit for selectively braking the wire;

A tension detecting part which rotates in a single direction when the wire connected to the winding part is broken; and the number of the first and second groups,

And a link part which converts the rotation motion of the tension detection part into a parallel motion and transmits the parallel motion to the brake part.

11. The vertical rod elevating system according to claim 10, wherein:

The tension detection unit includes:

a rotary bracket rotatably mounted to the base;

the 2 nd pulley mounted to the rotating bracket and movably supporting the wire; and the number of the first and second groups,

And an elastic part which makes the rotating bracket rotate in a single direction.

12. The vertical rod elevating system according to claim 11, further comprising:

And a pair of locking units respectively mounted on the fixed part and the moving part, for fixing the moving part to the fixed part when the fixed part is connected with the moving part.

13. The vertical rod lifting system according to claim 11, wherein:

The brake unit includes:

a connecting bracket connected with the connecting rod part;

14. The vertical rod lifting system according to claim 11, wherein:

The elastic part includes:

a spring mounted on the base;

A lifting block coupled to an end of the spring; and the number of the first and second groups,

A lateral protrusion which is combined to two sides of the lifting block to rotate the rotating bracket;

wherein the lateral protrusions are installed through long holes formed in the rotating bracket.

15. The vertical rod lifting system according to claim 13, wherein:

The pair of wedge members are formed with serrations on an inner side surface.

16. The vertical rod lifting system of claim 15, wherein:

17. The vertical rod lifting system according to claim 13, wherein: