CN111173858A

CN111173858A - Heavy centrifugal triggering type safety lock

Info

Publication number: CN111173858A
Application number: CN202010145609.3A
Authority: CN
Inventors: 付永生; 金惠昌; 陈雪松; 钱海军; 钱怀印; 赵磊磊
Original assignee: Wuxi Rigid Machinery Co ltd
Current assignee: Wuxi Rigid Machinery Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-05-19
Also published as: WO2021175070A1

Abstract

The invention belongs to the technical field of construction machinery high-altitude operation safety devices, and particularly relates to a heavy centrifugal trigger type safety lock which comprises a panel, wherein the panel is provided with a rope inlet, a rope outlet and a steel wire rope channel, one side of the steel wire rope channel is provided with a rope pressing mechanism positioned in the panel, the other side of the steel wire rope channel is provided with a centrifugal trigger mechanism rotatably connected to the panel, the panel is also provided with an opening and closing lock mechanism, the centrifugal trigger mechanism is in transmission connection with the opening and closing lock mechanism in a trigger state, a guide shaft and a base which are positioned below the rope pressing mechanism are arranged in the panel, the base is provided with a wedge-shaped groove surrounding the steel wire, and the guide shaft is fixedly arranged at the top of the base, a rope locking mechanism in sliding connection with the base is arranged on the guide shaft in a penetrating manner, and the rope locking mechanism is used for clamping or releasing the steel wire rope and is abutted to the locking and unlocking mechanism. The invention solves the technical problem of reducing the impact force borne by the safety lock when the safety lock is triggered and enabling the safety lock to be stressed uniformly.

Description

Heavy centrifugal triggering type safety lock

Technical Field

The invention belongs to the technical field of safety devices for high-altitude operation of construction machinery, and particularly relates to a heavy centrifugal trigger type safety lock.

Background

With the development of building mechanization, more and more high-altitude operation equipment is produced, wherein a centrifugal safety lock is one of core components for ensuring the safety of the high-altitude operation equipment. The locking rope mechanism of the existing centrifugal safety lock is designed by a force-adding quadrilateral principle, and adopts a rope clamp, a sleeve plate, a connecting piece and a spring linkage mode, so that the centrifugal safety lock has the following defects: firstly, the semicircular lug bosses of the rope clamps are small, so that the centrifugal safety lock is uneven in stress, and the centrifugal safety lock can only be applied to the field of medium load to the maximum extent; secondly, because centrifugal safety lock lacks the buffer unit, so make the impact force that receives when triggering great, cause centrifugal safety lock to damage easily.

Disclosure of Invention

In view of the defects in the prior art, the invention provides a centrifugal touch safety lock, which aims to solve the technical problem of how to effectively reduce the impact force borne by the heavy centrifugal touch safety lock during the triggering and enable the heavy centrifugal touch safety lock to be uniformly stressed.

In order to achieve the purpose of the invention, the technical scheme is as follows: the utility model provides a heavy centrifugal trigger formula safety lock, includes the panel, be equipped with into rope mouthful on the panel, go out the rope mouthful and with advance the rope mouthful with the wire rope passageway that the rope mouth is linked together, one side of wire rope passageway is equipped with and is located the rope pressing mechanism in the panel, the opposite side be equipped with the corresponding centrifugal trigger mechanism of rope pressing mechanism, centrifugal trigger mechanism rotates to be connected on the panel, still be equipped with switching lock mechanism on the panel, centrifugal trigger mechanism when the state of triggering with switching lock mechanism transmission is connected, be equipped with guiding axle and the base that is located in the rope pressing mechanism below in the panel, set up on the base around in the outer wedge groove of wire rope passageway, the guiding axle with the wire rope passageway parallels, and fixed mounting is in the top of base, slide on the guiding axle pass be equipped with base sliding connection's lock rope mechanism, the rope locking mechanism is used for clamping or releasing the steel wire rope and is abutted to the locking and unlocking mechanism.

Further, the air conditioner is provided with a fan,

the rope locking mechanism comprises a sliding plate, the sliding plate is arranged on a guide shaft in a sliding mode and is connected with a base in a sliding mode, a pair of symmetrical wedges are arranged on the sliding plate and are located on two sides of a steel wire rope channel, the two sides, away from the wedge, of the wedges are respectively attached to the inclined planes of the wedge grooves and are connected to the wedge grooves in a sliding mode, a support seat located below the base is connected to the bottom of the sliding plate, the top end of the support seat extends out of the panel, a plurality of rectangular holes are formed in the support seat, square pins and buffer blocks adhered to the square pins are sequentially arranged in the rectangular holes, the base is far away from the square pins, the movable connection is connected to the panel, and the bottom end of the. Compared with the conventional locking rope, the rope locking mechanism is stable and balanced in stress, and stress concentration is obviously reduced, so that the rope locking mechanism is more suitable for being used on heavy equipment. The centrifugal trigger safety lock is expected to be able to carry a weight in the range of 1000-2000kg, whereas the centrifugal trigger safety locks of the prior art are only able to reach a weight of at most 1000 kg.

And arc-shaped grooves are respectively formed on the opposite surfaces of the two wedge blocks.

The unlocking and locking mechanism comprises an unlocking shaft, a top block, a sliding sleeve, a shifting rod and a locking rope spring, the locking rope spring is sleeved on the guide shaft, two ends of the locking rope spring are respectively abutted to the sliding plate and the base, the unlocking shaft vertically extends into the panel through the sliding sleeve, the unlocking shaft is located at one end outside the panel and is provided with the shifting rod, the other end of the unlocking shaft is sleeved with the top block, and the top block is abutted to the sliding plate.

The panel is in be equipped with stop screw on the face that the driving lever was located, and the top cover is equipped with assorted housing, be equipped with the window on the housing and be located the handle of unblanking of window one side, the handle of unblanking with the axle of unblanking links to each other.

The top block is a cam with a big top and a small bottom.

Centrifugal trigger mechanism includes the runing rest, the runing rest rotates and stretches into in the panel, the runing rest is located one of in the panel is served and is equipped with the tachometer wheel, and articulated on the other end have a pair of symmetry to set up get rid of the piece, two be connected with the adjustment spring between the free end of getting rid of the piece.

And the peripheral surface of the speed measuring wheel is provided with a V-shaped groove.

The rope pressing mechanism comprises a clamping plate, one end of the clamping plate is hinged to the panel, a rope pressing wheel is rotatably arranged at the other end of the clamping plate, and a compression spring is abutted between the middle of the clamping plate and the side wall of the panel.

An arc-shaped groove is formed in the outer peripheral surface of the rope pressing wheel.

The invention has the beneficial effects that: the part of the rope locking mechanism for clamping the steel wire rope is arranged into a pair of wedge blocks symmetrically arranged on two sides of the steel wire rope channel, so that the technical effect of enabling the heavy centrifugal triggering type safety lock to be stressed uniformly is achieved; and the cushion pad is additionally arranged in the rope locking mechanism, and the acting force generated by the cushion pad is opposite to the impact force borne by the heavy centrifugal trigger type safety lock when the heavy centrifugal trigger type safety lock is triggered, so that the technical effect of effectively reducing the impact force borne by the heavy centrifugal trigger type safety lock when the heavy centrifugal trigger type safety lock is triggered is realized, and the safety lock, the equipment and the steel wire rope are protected. Compared with the prior art, the structure is simple, the stress concentration is small, the service life is long, and the device is more suitable for the heavy-load field.

Drawings

FIG. 1 is a cross-sectional view of a housing of the present invention in one embodiment;

3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 the 3 present 3 invention 3 in 3 one 3 embodiment 3; 3

FIG. 3 is a front view of the present invention in one embodiment;

FIG. 4 is a schematic view of an unlocked state of the present invention in one embodiment;

FIG. 5 is a schematic view of a locked state according to the present invention;

description of reference numerals: 1-rope inlet, 2-swinging block, 3-speed regulating spring, 4-adjusting cap, 5-mounting pin, 6-deflector rod, 7-limit screw, 8-bracket, 9-rotating bracket, 10-bearing, 11-housing, 12-front panel, 13-rear panel, 14-tachometer wheel, 15-guide shaft, 16-rope locking spring, 17-base, 18-window, 19-unlocking handle, 20-square pin, 21-buffer block, 22-guide pin, 23-wedge block, 24-sliding plate, 25-clamping plate, 26-rope pressing spring, 27-rope pressing wheel, 28-top block, 29-round pin, 30-unlocking shaft and 31-sliding sleeve.

Detailed description of the preferred embodiments

The invention is further described with reference to the drawings and the detailed description.

As shown in fig. 1 to 5: a heavy centrifugal trigger type safety lock comprises a panel formed by connecting a front panel 12 and a rear panel 13, wherein the top of the panel is provided with a rope inlet 1, the bottom of the panel is provided with a rope outlet opposite to the rope inlet 1 and a steel wire rope channel communicated with the rope inlet 1 and the rope outlet, and the panel is internally provided with a speed measuring roller 14, a rope pressing wheel 27, a clamping plate 25, a rope pressing spring 26, a top block 28, a guide shaft 15, a base 17, a sliding plate 24, two wedge blocks 23 and a bracket 8; the middle part of the clamping plate 25 is connected to the inner side wall of the panel through a rope pressing spring 26, one end of the clamping plate is rotatably connected to the inner wall of the panel through a pin, the other end of the clamping plate is a free end and is rotatably connected with a rope pressing wheel 27, the rope pressing wheel 27 can rotate around a pin hole of the clamping plate 25, an arc-shaped groove is formed in the outer peripheral surface of the rope pressing wheel 27, the rope pressing wheel 27 and the speed measuring wheel 14 are correspondingly positioned on two sides of a steel wire rope channel, and the rope pressing wheel 27 is pressed towards the speed measuring wheel 14 under the action of; the outer peripheral surface of the tachometer wheel 14 is provided with a V-shaped groove and is fixed at one end of a rotary bracket 9 extending into a panel, the rotary bracket 9 is fixed with a front panel 12 and a rear panel 13 through a bearing 10, the part of the rotary bracket 9 positioned outside the front panel is hinged with a pair of symmetrically arranged throwing blocks 2 through a fixing pin 5, the outer sides of the two throwing blocks 2 are provided with a plurality of convex outer teeth, and the free ends are connected through a speed regulating spring 3; the front panel 12 is covered with a cover 11, the cover 11 is provided with a window 18, and the window 18 is opposite to the throwing block 2, so that the rotation condition of the throwing block 2 can be observed. The front panel 12 is still equipped with driving lever 6 on the same height with the external tooth place of throwing block 2, and driving lever 6 is connected on unlocking shaft 30, and unlocking shaft 30 passes through sliding sleeve 31 to be installed on two panels, and installs kicking block 28 in stretching into the panel, and the other end stretches out housing 11 and installs the handle 19 of unblanking. The front panel 12 is also provided with a limit screw 7 which is positioned in the area between the unlocking shaft 30 and the throwing block 2 and limits the rotation range of the deflector rod 6 under the action of a torsion spring. The top block 28 is a cam with a big top and a small bottom, and the top block 28 is abutted against the upper part of the sliding plate 24; the base 17 is positioned below the tachometer wheel 14 and fixed between the inner side walls of the panels through 4 round pins 29, a wedge-shaped groove surrounding the steel wire rope channel is formed in the base 17, a bilaterally symmetrical inclined long hole and a transverse long hole are formed in the bottom of the wedge-shaped groove, two wedge blocks 23 correspondingly attached to two inclined surfaces of the wedge-shaped groove are arranged in the wedge-shaped groove, arc-shaped grooves which are narrow in top and wide in bottom and bilaterally symmetrical are formed in the opposite surfaces of the two wedge blocks 23, and the arc-shaped grooves are connected with the sliding plate; the sliding plate 24 is connected with the base in a sliding mode through the guide pin 22, the top of the sliding plate is provided with a through hole, the sliding plate penetrates through the guide shaft 15 connected to the top of the base 17 through the through hole, the guide shaft 15 is located below the speed measuring wheel 14, a rope locking spring 16 with two ends respectively abutted to the sliding plate 24 and the base 17 is sleeved on the guide shaft 15, the bottom of the sliding plate 24 is connected with a support seat 8 with one end extending out of the panel, a steel wire rope channel penetrates through the support seat 8, a rectangular hole is formed in the support seat 8, a square pin 20 and a buffer block 21 are installed in the support seat 8, the buffer block 21 is installed on the upper portion of the square pin.

The working principle is as follows: during normal work, heavy centrifugal trigger formula safety lock is the open mode, and the small circular arc of kicking block 28 bottom is down with the upper surface laminating of sliding plate 24, makes sliding plate 24 be in its home range's below, and the opposite face of two voussoirs 23 is apart from furthest, but is less than the wire rope diameter for wire rope can only penetrate from its inside arc wall department. After entering the safety lock, the steel wire rope firstly passes through the speed measuring wheel 14 and the rope pressing wheel 27, and generates friction force under the action of the rope pressing spring 26 to drive the rotating bracket 9 and the throwing blocks 2 to rotate, and the two throwing blocks 2 are connected through the speed regulating spring 3. When the sliding speed of the safety lock reaches a set speed, centrifugal force enables the throwing block 2 to overcome the speed regulating spring 3 and be opened, the tooth edge on the throwing block 2 touches the shift lever 6 to enable the shifting lever to rotate, the contact line of the top block 28 and the sliding plate 23 deviates from the vertical direction, and due to the upward acting force of the rope locking spring 16 on the top block 28, the top block 28 cannot provide enough downward force, so that the sliding plate 23 moves upwards under the pressure generated by the rope locking spring 16, meanwhile, the wedge block 23 is driven to move upwards along the inclined plane of the wedge groove of the base 17, the two wedge blocks 23 approach each other in the opposite direction until the steel wire rope is tightly locked in the arc groove of the wedge block 23, in the process, the sliding plate 24 moves upwards to drive the bracket 8 to move upwards, the buffer block 21 in the rectangular hole of the bracket 8 is extruded. When the lock needs to be unlocked, the unlocking handle 19 is rotated, the top block 28 pushes the sliding plate 24 downwards, the downward movement is realized by overcoming the pressure of the locking rope spring 16 until the center of the small circular arc at the head of the top block 28 and the center of the unlocking shaft 30 are in the vertical direction, in the process, the wedge block 23 descends along the inclined plane of the wedge-shaped groove of the base 17, the opposite surface of the wedge block 23 is gradually far away, and the steel wire rope is released; meanwhile, the head of the shifting lever 6 is close to the throwing block 2 until the shifting lever contacts the positioning screw 7 and cannot rotate continuously, and the shifting lever 7 is in a state of waiting to be triggered.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a heavy centrifugal trigger formula safety lock, a serial communication port, includes the panel, be equipped with into rope mouthful on the panel, go out the rope mouthful and with advance the rope mouthful with go out the wire rope passageway that the rope mouthful is linked together, one side of wire rope passageway is equipped with and is located the rope pressing mechanism in the panel, the opposite side be equipped with the corresponding centrifugal trigger mechanism of rope pressing mechanism, centrifugal trigger mechanism rotates to be connected on the panel, still be equipped with switching lock mechanism on the panel, centrifugal trigger mechanism when the trigger state with switching lock mechanism transmission is connected, be equipped with guiding axle and base that is located in the rope pressing mechanism below in the panel, set up on the base around in the outer wedge groove of wire rope passageway, the guiding axle with the wire rope passageway parallels, and fixed mounting be in the top of base, the sliding pass on the guiding axle be equipped with base sliding connection's rope locking mechanism, the rope locking mechanism is used for clamping or releasing the steel wire rope and is abutted to the locking and unlocking mechanism.

2. The heavy centrifugal trigger type safety lock according to claim 1, wherein the rope locking mechanism comprises a sliding plate, the sliding plate is slidably sleeved on the guide shaft and is slidably connected with the base, the sliding plate is provided with a pair of wedge blocks symmetrically positioned at two sides of the steel wire rope channel, the two far sides of the wedge blocks are respectively attached to the corresponding inclined surfaces of the wedge grooves and are slidably connected with the wedge grooves, the bottom of the sliding plate is connected with a bracket positioned below the base, the top end of the bracket extends out of the panel, the bracket is provided with a plurality of rectangular holes, the rectangular holes are sequentially provided with square pins and buffer blocks adhered to the square pins, the square pins are far away from the base and are movably connected on the panel, and the bottom end of the bracket extends out of the panel.

3. A heavy centrifugal trigger type safety lock according to claim 2, wherein the opposite faces of the two wedges are respectively provided with an arc-shaped groove.

4. The heavy centrifugal trigger type safety lock according to claim 2, wherein the heavy centrifugal trigger type safety lock comprises an unlocking shaft, a top block, a sliding sleeve, a shifting rod and a locking rope spring, the locking rope spring is sleeved on the guide shaft, two ends of the locking rope spring are respectively abutted against the sliding plate and the base, the unlocking shaft vertically extends into the panel through the sliding sleeve, one end of the unlocking shaft, which is located outside the panel, is provided with the shifting rod, the other end of the unlocking shaft is sleeved with the top block, and the top block is abutted against the sliding plate.

5. A heavy centrifugal trigger type safety lock according to claim 4, wherein the face plate is provided with a limit screw on the surface where the shift lever is located, a matched cover shell is covered above the limit screw, the cover shell is provided with a window and an unlocking handle located on one side of the window, and the unlocking handle is connected with the unlocking shaft.

6. A heavy duty centrifugally triggered safety lock according to claim 3 wherein said top block is a cam with large top and small bottom.

7. A heavy centrifugal trigger type safety lock according to claim 1, wherein the centrifugal trigger mechanism comprises a rotary support, the rotary support rotates to extend into the panel, one end of the rotary support located in the panel is sleeved with a speed measuring wheel, the other end of the rotary support is hinged with a pair of symmetrically arranged throwing blocks, and an adjusting spring is connected between free ends of the two throwing blocks.

8. A heavy centrifugal trigger type safety lock according to claim 7, wherein a V-shaped groove is formed in the outer peripheral surface of the tachometer wheel.

9. A heavy centrifugal trigger type safety lock according to claim 1, wherein the rope pressing mechanism comprises a clamping plate, one end of the clamping plate is hinged on the panel, the other end of the clamping plate is rotatably provided with a rope pressing wheel, and a compression spring is abutted between the middle part of the clamping plate and the side wall of the panel.

10. The heavy centrifugal trigger type safety lock according to claim 9, wherein an arc-shaped groove is formed in the outer peripheral surface of the rope pressing wheel.