CN212141399U - A kind of protector - Google Patents

A kind of protector Download PDF

Info

Publication number
CN212141399U
CN212141399U CN202020507583.8U CN202020507583U CN212141399U CN 212141399 U CN212141399 U CN 212141399U CN 202020507583 U CN202020507583 U CN 202020507583U CN 212141399 U CN212141399 U CN 212141399U
Authority
CN
China
Prior art keywords
casing
lock shaft
lock
pressing block
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020507583.8U
Other languages
Chinese (zh)
Inventor
吴先厂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202020507583.8U priority Critical patent/CN212141399U/en
Application granted granted Critical
Publication of CN212141399U publication Critical patent/CN212141399U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

The utility model discloses a protector, be in including casing and pin joint briquetting in the installation cavity of casing, the briquetting is rotatory to be passed the rope extrusion of installation cavity is fixed or the release, the briquetting is rotatory extremely during the installation cavity, be located second elastic locking device on the briquetting with be located first lockhole lock on the casing is connected, is located first elastic locking device on the casing with be located second lockhole lock on the briquetting is connected. The utility model discloses convenient to use, safe and reliable.

Description

A kind of protector
Technical Field
The utility model relates to a protector.
Background
Rock climbing is a dangerous movement for people to challenge themselves, in order to ensure personal safety in the rock climbing process, a safety protection rope is usually arranged, and a challenger needs to connect a rope on a protection suit of the challenger with the protection rope through a protector; along with the development in city, high-rise building is more and more, and the accident also increases thereupon, when the fire fighter can not enter through normal passageway, can adopt the mode of falling fast from the roof to get into the resident family room fast usually and rescue, at the in-process that falls fast, also need be connected with the protection rope through rope that the protector will be located on fire fighter's protective clothing, consequently, it is very necessary to develop a rope that can avoid the protective clothing to use reliable protector and protective rope break away from.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a convenient to use, safe and reliable's protector.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a protector, includes the casing and the pin joint is in the briquetting in the installation cavity of casing, the briquetting is rotatory can be with passing the rope extrusion of installation cavity is fixed or is released, the briquetting is rotatory extremely when in the installation cavity, be located second elasticity locking device on the briquetting with be located first lockhole lock closure on the casing is connected, be located first elasticity locking device on the casing with be located second lockhole lock closure on the briquetting is connected.
Furthermore, the installation cavity is fixedly provided with two guide pins, the two guide pins are respectively positioned on two sides of the pressing block, and the rope is extruded and fixed to be positioned between the two guide pins and the pressing block.
Furthermore, the pressing block is triangular, and one corner of the pressing block is pivoted on the shell.
Further, first elasticity locking device includes and is in through bolt or welded fastening connection housing, fixed setting on the casing are in rectangle lock tube, the slip setting of housing intracavity is in lock axle and first reset spring on the housing, wearing out of lock axle one of housing is served and is equipped with the bulb, the lock epaxial be equipped with lock axle mutually perpendicular's gag lever post, the lower limb of rectangle lock tube is equipped with spacing breach, rotatory messenger after the lock axle pushes down the gag lever post gets into in the spacing breach, the compression first reset spring promotes the lock epaxial messenger the gag lever post moves into the door shape spacing inslot of spacing breach.
Furthermore, the first elastic locking device further comprises a circular baffle plate with a shifting hole, two symmetrical installation notches are formed in the edge of the circular baffle plate, the circular baffle plate is installed in the housing, and the circular baffle plate is limited in the housing by two stop blocks located on the edge of the opening of the housing.
Further, first elasticity locking device includes to be connected through bolt or welded fastening casing on the casing, fixed setting are in rectangle lock sleeve, the slip cap of casing intracavity are established gland, slip setting on the casing are in lock axle and first reset spring on the casing, wearing out of lock axle the one end of casing with the gland is connected, lock epaxial be equipped with lock axle mutually perpendicular's gag lever post, the epaxial back rotation that moves of lock makes the gag lever post support and press the top of rectangle lock sleeve, simultaneously, first reset spring is compression state.
Furthermore, the second elastic locking device comprises a convex lock column arranged in the sliding hole of the pressing block in a sliding mode and a second return spring arranged at the bottom of the convex lock column, and the convex lock column and the second return spring are limited in the sliding hole by a cover plate fixedly arranged on the pressing block.
Furthermore, a duckbilled guide plate protruding outwards is arranged on the edge of the shell, and the convex lock cylinder extrudes and retracts inwards when passing through the duckbilled guide plate.
Furthermore, a hanging hole is formed in the shell.
According to the above technical solution, the utility model has the advantages that: the double-locking mechanism has double locking, so that the safety and the reliability are realized; the locking is convenient because the elastic locking device is adopted.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a first elastic locking device according to a first embodiment of the present invention.
Fig. 3 is a schematic structural view of a first elastic locking device according to a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a circular baffle according to a second embodiment of the present invention.
Fig. 5 is a schematic structural view of a first elastic locking device according to a third embodiment of the present invention.
Fig. 6 is a schematic structural view of a second elastic locking device of the present invention.
Labeled as: the locking device comprises a shell 1, a mounting cavity 11, a guide pin 12, a hanging hole 13, a first elastic locking device 14, a cover 141, a stop 1411, a lock shaft 142, a circular baffle 143, a mounting notch 1431, a poking hole 1432, a limiting rod 144, a rectangular lock sleeve 145, a first limiting notch 1451, a second limiting notch 1452, a first return spring 146, a ball head 147, a gland 148, a duckbilled guide plate 15, a first lock hole 16, a press block 2, a second elastic locking device 22, a convex lock column 221, a second return spring 222, a cover plate 223 and a second lock hole 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1, 2 and 6, a protector includes a housing 1 and a press block 2, a hanging hole 13 is provided on the housing 1, the press block 2 is triangular, and one corner of the press block 2 is pivoted in an installation cavity 11 of the housing 1 having an opening on one side, the press block 2 rotates to squeeze and fix or release a rope crossing an opening of the installation cavity 11, when the press block 2 rotates into the installation cavity 11, a second elastic locking device 22 located on the press block 2 is in locking connection with a first locking hole 16 located on the housing 1, a first elastic locking device 14 located on the housing 1 is in locking connection with a second locking hole 23 located on the press block 2, double locking is performed, the using process is safe and reliable, wherein the first locking hole 16 is located in the middle of the housing 1, the second locking hole 23 is located in a second corner of the press block 2, the second elastic locking device 22 is close to the third corner of the pressing block 2, and a duckbill-shaped guide plate 15 protruding outwards is arranged on the edge of the shell 1.
The briquette 2 may also be other regular polygons.
A side face, close to the pivot shaft of the pressing block 2, of the shell 1 is provided with an arc-shaped notch, and when the pressing block 2 rotates to the outer side, the rope can be conveniently and quickly placed at the opening of the installation cavity 11.
The installation cavity 11 internal fixation is equipped with two uide pins 12, and two uide pins 12 are located respectively the both sides of briquetting 2, the rope extrusion is fixed the back be located two uide pins 12 with between the briquetting 2, the marginal contact of rope and casing 1 is avoided causing the extrusion damage to the rope to the setback of uide pin 12.
As shown in fig. 2, the first elastic locking device 14 includes a cover 141 fixedly connected to the housing 1 by welding, a rectangular lock sleeve 145 fixedly disposed in a cavity of the cover 141, a lock shaft 142 slidably disposed on the cover 141, and a first return spring 146, wherein a ball head 147 is disposed at an end of the lock shaft 142 that penetrates out of the cover 141, the ball head 147 facilitates operation of the lock shaft 142, a limit rod 144 perpendicular to the lock shaft 142 is disposed on the lock shaft 142, the limit rod 144 is disposed in the rectangular lock sleeve 145, two limit notches 1451 are disposed at a lower edge of the rectangular lock sleeve 145, the lock shaft 142 rotates after being pressed down to enable two ends of the limit rod 144 to enter the corresponding limit notches 1451, and the compressed first return spring 146 pushes the lock shaft 142 to move up to enable the limit rod 144 to move into a door-shaped limit groove of the limit notch 1451 to prevent the lock shaft 142 from rotating, and the lock shaft 142 keeps an outward extending state and is locked with the press block 2, when the locking state of the lock shaft 142 needs to be changed, the ball head 147 is pressed to enable the limiting rod 144 to be separated from the door-shaped limiting groove, then the lock shaft 142 is rotated to enable the limiting rod 144 to be moved out of the limiting notch 1451, and after the hand is released, the lock shaft 142 moves up and retracts under the action of the compressed first return spring 146 to unlock the press block 2.
As shown in fig. 6, the second elastic locking device 22 includes a male locking cylinder 221 slidably disposed in the sliding hole of the pressing block 2 and a second return spring 222 disposed at the bottom of the male locking cylinder 221, a cover plate 223 fixedly disposed on the pressing block 2 defines the male locking cylinder 221 and the second return spring 222 in the sliding hole, the male locking cylinder 221 compresses and retracts when passing through the duckbill-shaped guide plate 15, and the male locking cylinder 221 resets and protrudes when traveling to the first locking hole 16.
When the rope locking device is used, the first elastic locking device 14 is unlocked, the pressing block 2 is shifted to rotate outwards while the convex locking column 221 is pressed, the rope is placed between the shell 1 and the pressing block 2, the pressing block 2 is shifted to rotate inwards, the convex locking column 221 is extruded and retracted when passing through the duckbilled guide plate 15, and when the convex locking column 221 runs to the first locking hole 16, the convex locking column is reset to protrude, and then the first elastic locking device 14 is locked.
Example two
Referring to fig. 1, 3, 4 and 6, the protector includes a housing 1 and a pressing block 2, the housing 1 is provided with a hanging hole 13, the pressing block 2 is triangular, and one corner of the pressing block 2 is pivoted in an installation cavity 11 of the housing 1 with an opening on one side, the pressing block 2 rotates to squeeze and fix or release a rope crossing the opening of the installation cavity 11, when the pressing block 2 rotates into the installation cavity 11, a second elastic locking device 22 located on the pressing block 2 is in locking connection with a first locking hole 16 located on the housing 1, a first elastic locking device 14 located on the housing 1 is in locking connection with a second locking hole 23 located on the pressing block 2, double locking is achieved, the using process is safe and reliable, wherein the first locking hole 16 is located in the middle of the housing 1, the second locking hole 23 is located in a second corner of the pressing block 2, the second elastic locking device 22 is close to the third corner of the pressing block 2, and a duckbill-shaped guide plate 15 protruding outwards is arranged on the edge of the shell 1.
The briquette 2 may also be other regular polygons.
A side face, close to the pivot shaft of the pressing block 2, of the shell 1 is provided with an arc-shaped notch, and when the pressing block 2 rotates to the outer side, the rope can be conveniently and quickly placed at the opening of the installation cavity 11.
The installation cavity 11 internal fixation is equipped with two uide pins 12, and two uide pins 12 are located respectively the both sides of briquetting 2, the rope extrusion is fixed the back be located two uide pins 12 with between the briquetting 2, the marginal contact of rope and casing 1 is avoided causing the extrusion damage to the rope to the setback of uide pin 12.
As shown in fig. 3, the first elastic locking device 14 includes a casing 141 fixedly connected to the housing 1 by bolts, a rectangular lock sleeve 145 fixedly disposed in a cavity of the casing 141, a lock shaft 142 slidably disposed on the casing 141, and a first return spring 146, wherein a ball head 147 is disposed at an end of the lock shaft 142 that penetrates out of the casing 141, the ball head 147 facilitates operation of the lock shaft 142, a limit rod 144 perpendicular to the lock shaft 142 is disposed on the lock shaft 142, the limit rod 144 is disposed in the rectangular lock sleeve 145, two limit notches 1451 are disposed at a lower edge of the rectangular lock sleeve 145, the lock shaft 142 rotates after being pressed down to enable two ends of the limit rod 144 to enter the corresponding limit notches 1451, and the compressed first return spring 146 pushes the lock shaft 142 to move up to enable the limit rod 144 to move into a door-shaped limit groove of the limit notch 1451 to prevent the lock shaft 142 from rotating, and the lock shaft 142 keeps an outward extending state and is locked with the press block 2, when the locking state of the lock shaft 142 needs to be changed, the ball head 147 is pressed to enable the limiting rod 144 to be separated from the door-shaped limiting groove, then the lock shaft 142 is rotated to enable the limiting rod 144 to be moved out of the limiting notch 1451, and after the hand is released, the lock shaft 142 moves up and retracts under the action of the compressed first return spring 146 to unlock the press block 2.
As shown in fig. 3 and 4, the first elastic locking device 14 further includes a circular baffle 143 having a dial hole 1432, two symmetrical installation notches 1431 are provided on an edge of the circular baffle 143, the circular baffle 143 is installed in the housing 141, two stoppers 1411 located on an opening edge of the housing 141 limit the circular baffle 143 in the housing 141, two ends of the first return spring 146 respectively press against the limiting rod 144 and the circular baffle 143, and the circular baffle 143 can be removed when the installation notches 1431 are rotated to the corresponding stoppers 1411 through the dial hole 1432.
As shown in fig. 6, the second elastic locking device 22 includes a male locking cylinder 221 slidably disposed in the sliding hole of the pressing block 2 and a second return spring 222 disposed at the bottom of the male locking cylinder 221, a cover plate 223 fixedly disposed on the pressing block 2 defines the male locking cylinder 221 and the second return spring 222 in the sliding hole, the male locking cylinder 221 compresses and retracts when passing through the duckbill-shaped guide plate 15, and the male locking cylinder 221 resets and protrudes when traveling to the first locking hole 16.
When the rope locking device is used, the first elastic locking device 14 is unlocked, the pressing block 2 is shifted to rotate outwards while the convex locking column 221 is pressed, the rope is placed between the shell 1 and the pressing block 2, the pressing block 2 is shifted to rotate inwards, the convex locking column 221 is extruded and retracted when passing through the duckbilled guide plate 15, and when the convex locking column 221 runs to the first locking hole 16, the convex locking column is reset to protrude, and then the first elastic locking device 14 is locked.
EXAMPLE III
Referring to fig. 1, 5 and 6, a protector includes a housing 1 and a press block 2, a hanging hole 13 is provided on the housing 1, the press block 2 is triangular, and one corner of the press block 2 is pivoted in an installation cavity 11 of the housing 1 having an opening on one side, the press block 2 rotates to squeeze and fix or release a rope crossing an opening of the installation cavity 11, when the press block 2 rotates into the installation cavity 11, a second elastic locking device 22 located on the press block 2 is in locking connection with a first locking hole 16 located on the housing 1, a first elastic locking device 14 located on the housing 1 is in locking connection with a second locking hole 23 located on the press block 2, double locking is performed, and the using process is safe and reliable, wherein the first locking hole 16 is located in the middle of the housing 1, the second locking hole 23 is located in a second corner of the press block 2, the second elastic locking device 22 is close to the third corner of the pressing block 2, and a duckbill-shaped guide plate 15 protruding outwards is arranged on the edge of the shell 1.
The briquette 2 may also be other regular polygons.
A side face, close to the pivot shaft of the pressing block 2, of the shell 1 is provided with an arc-shaped notch, and when the pressing block 2 rotates to the outer side, the rope can be conveniently and quickly placed at the opening of the installation cavity 11.
The installation cavity 11 internal fixation is equipped with two uide pins 12, and two uide pins 12 are located respectively the both sides of briquetting 2, the rope extrusion is fixed the back be located two uide pins 12 with between the briquetting 2, the marginal contact of rope and casing 1 is avoided causing the extrusion damage to the rope to the setback of uide pin 12.
As shown in fig. 5, the first elastic locking device 14 includes a casing 141 fixedly connected to the housing 1 by bolts or welding, a rectangular lock sleeve 145 fixedly disposed in a cavity of the casing 141, a gland 148 slidably covered on the casing 141, a lock shaft 142 slidably disposed on the casing 141, and a first return spring 146, wherein one end of the lock shaft 142 extending out of the casing 141 is connected to the gland 148, the lock shaft 142 is provided with a stopper rod 144 perpendicular to the lock shaft 142, the stopper rod 144 is disposed in the rectangular lock sleeve 145, the gland 148 is lifted to move the lock shaft 142 upward and retract, and then the stopper rod 144 is rotated to press against the top end of the rectangular lock sleeve 145, meanwhile, the first return spring 146 unlocks the pressing block 2 in a compressed state, and when the locked state of the lock shaft 142 needs to be changed, the gland 148 is rotated to separate the stopper rod 144 from the rectangular lock sleeve 145, the lock shaft 142 moves under the action of the first return spring 146 to keep the lock shaft 142 in an extended state and locked with the pressing block 2.
As shown in fig. 6, the second elastic locking device 22 includes a male locking cylinder 221 slidably disposed in the sliding hole of the pressing block 2 and a second return spring 222 disposed at the bottom of the male locking cylinder 221, a cover plate 223 fixedly disposed on the pressing block 2 defines the male locking cylinder 221 and the second return spring 222 in the sliding hole, the male locking cylinder 221 compresses and retracts when passing through the duckbill-shaped guide plate 15, and the male locking cylinder 221 resets and protrudes when traveling to the first locking hole 16.
When the rope locking device is used, the first elastic locking device 14 is unlocked, the pressing block 2 is shifted to rotate outwards while the convex locking column 221 is pressed, the rope is placed between the shell 1 and the pressing block 2, the pressing block 2 is shifted to rotate inwards, the convex locking column 221 is extruded and retracted when passing through the duckbilled guide plate 15, and when the convex locking column 221 runs to the first locking hole 16, the convex locking column is reset to protrude, and then the first elastic locking device 14 is locked.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The protector is characterized by comprising a shell (1) and a pressing block (2) which is pivoted in an installation cavity (11) of the shell (1), wherein the pressing block (2) rotates to extrude and fix or release a rope penetrating through the installation cavity (11), when the pressing block (2) rotates into the installation cavity (11), a second elastic locking device (22) located on the pressing block (2) is in locking connection with a first locking hole (16) located on the shell (1), and a first elastic locking device (14) located on the shell (1) is in locking connection with a second locking hole (23) located on the pressing block (2).
2. Protector according to claim 1, characterized in that two guide pins (12) are fixed in the mounting cavity (11), and the two guide pins (12) are respectively located on both sides of the press block (2), and the rope is pressed and fixed between the two guide pins (12) and the press block (2).
3. Protector according to claim 1, characterized in that the pressure piece (2) is triangular and that one corner of the pressure piece (2) is pivoted to the housing (1).
4. Protector according to claim 1, characterized in that the first elastic locking means (14) comprise a cover (141) fixed to the case (1) by means of bolts or welding, a rectangular lock sleeve (145) fixedly arranged in the cavity of the cover (141), a lock shaft (142) slidingly arranged on the cover (141) and a first return spring (146), a ball head (147) is arranged at one end of the lock shaft (142) which penetrates out of the housing (141), a limiting rod (144) which is vertical to the lock shaft (142) is arranged on the lock shaft (142), the lower edge of the rectangular lock sleeve (145) is provided with a limiting notch (1451), the lock shaft (142) rotates after being pressed down to enable the limiting rod (144) to enter the limiting notch (1451), and the compressed first return spring (146) pushes the lock shaft (142) to move upwards to enable the limiting rod (144) to move into a door-shaped limiting groove of the limiting notch (1451).
5. Protector according to claim 4, characterized in that the first elastic locking means (14) also comprise a circular flap (143) with a dial hole (1432), on the edge of which circular flap (143) two symmetrical mounting notches (1431) are provided, the circular flap (143) being mounted inside the casing (141), two stops (1411) on the edge of the opening of the casing (141) delimiting the circular flap (143) inside the casing (141).
6. The protector according to claim 1, wherein the first elastic locking device (14) comprises a casing (141) fixedly connected to the housing (1) through bolts or welding, a rectangular lock sleeve (145) fixedly arranged in a cavity of the casing (141), a gland (148) slidably covered on the casing (141), a lock shaft (142) slidably arranged on the casing (141), and a first return spring (146), wherein one end of the lock shaft (142) penetrating out of the casing (141) is connected with the gland (148), a limiting rod (144) perpendicular to the lock shaft (142) is arranged on the lock shaft (142), the lock shaft (142) rotates after moving upwards to enable the limiting rod (144) to be pressed against the top end of the rectangular lock sleeve (145), and meanwhile, the first return spring (146) is in a compressed state.
7. Protector according to claim 1, characterized in that the second elastic locking means (22) comprise a male locking cylinder (221) slidingly arranged in a sliding hole of the pressure piece (2) and a second return spring (222) arranged at the bottom of the male locking cylinder (221), the male locking cylinder (221) and the second return spring (222) being defined in the sliding hole by a cover plate (223) fixedly arranged on the pressure piece (2).
8. A protector according to claim 7, characterised in that the housing (1) is provided at its edge with an outwardly projecting duckbill guide plate (15), the male lock cylinder (221) being adapted to be squeezed inwardly as it passes over the duckbill guide plate (15).
9. Protector according to claim 1, characterized in that the housing (1) is provided with a hanging hole (13).
CN202020507583.8U 2020-04-08 2020-04-08 A kind of protector Active CN212141399U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020507583.8U CN212141399U (en) 2020-04-08 2020-04-08 A kind of protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020507583.8U CN212141399U (en) 2020-04-08 2020-04-08 A kind of protector

Publications (1)

Publication Number Publication Date
CN212141399U true CN212141399U (en) 2020-12-15

Family

ID=73726458

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020507583.8U Active CN212141399U (en) 2020-04-08 2020-04-08 A kind of protector

Country Status (1)

Country Link
CN (1) CN212141399U (en)

Similar Documents

Publication Publication Date Title
CN107461086A (en) A kind of locking system for fire window
CN212141399U (en) A kind of protector
CN105565119A (en) Lift car rescue device
CN216583677U (en) Car wall for fire elevator
CN213332010U (en) Self-locking universal rotary hook
CN211618032U (en) High-safety shipping escape capsule
CN201295475Y (en) Life belt hook with protecting device
CN209405539U (en) The safe rope Locking device of high altitude operation
CN216277414U (en) Protection door ring and door bolt with prying plate groove structure for material conveying platform of construction elevator
CN213418787U (en) Safe type austral window, sliding sash locking structure
CN213077256U (en) Novel anti-panic descender
CN209548683U (en) A kind of restraint device that specific purpose tool is opened
CN214330295U (en) Power-off descending device for car window glass
CN209780743U (en) Standard festival cat ladder with prevent weighing down function
CN203342233U (en) Double-belt double-buckle type safety belt lock catch
CN202380856U (en) Explosion-proof and fire-proof bidirectional escape door lock of fire fighting access of railway tunnel
CN112709508A (en) Door stop device
CN210313012U (en) Mounting structure of emergency treatment display terminal in ladder
CN206138604U (en) A anti -falling device for rigid guideway
CN205006102U (en) Unpowered barrier padlock of crossing
CN211573034U (en) Door stop device
CN111411853A (en) Power-off descending device for car window glass
CN217022846U (en) Quick sinking stopping device for marine rescue
CN113264434B (en) Material transfer device for house construction
CN113908456B (en) Multi-mode eccentric wheel panic-proof descender

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant