CN217498372U - Novel emergency door curtain for coal mine vertical shaft cage - Google Patents

Abstract

The utility model relates to a colliery borehole operation technical field, concretely relates to novel colliery is emergent door curtain for vertical shaft cage, a novel colliery is emergent door curtain for vertical shaft cage, including door curtain sliding frame one, door curtain sliding frame two, door curtain sliding frame three that are located the cage entrance to a cave, the inboard activity of door curtain sliding frame is equipped with sliding bottom plate one, and the inboard top fixed mounting of door curtain sliding frame has roof one, and sliding bottom plate one and roof rotate between one and install door curtain body one, sliding bottom plate both ends surface has all seted up the screw, is equipped with reciprocating screw rod No. one in the screw of sliding bottom plate one. The utility model discloses, door curtain sliding frame one, door curtain sliding frame two, door curtain sliding frame three are opened, reach the manual effect of opening, and then make things convenient for personnel to carry out the manual opening to door curtain body one, door curtain body two, door curtain body three to reciprocal lead screw, No. two reciprocal lead screws, No. three reciprocal lead screws ensure door curtain body one, door curtain body two, door curtain body three more stable when opening.

Description

Novel emergency door curtain for coal mine vertical shaft cage

Technical Field

The utility model relates to a colliery borehole operation technical field, concretely relates to novel colliery is emergent door curtain for vertical shaft cage.

Background

The Dongfeng shaft is used as a main channel for people in a certain Oriental well area to go out of and enter the shaft, and is used for bearing the lifting task of people going up and down the shaft, the task amount is huge, and the hook lifting amount is 450-500 hooks every day at present. The chinese patent discloses a colliery is emergency door curtain for vertical shaft cage (grant notice No. CN 216638595U), the cage emergency exit has been solved to this patent technique, after automatic transformation, in the operation maintenance, it has very big potential safety hazard to the safe operation to discover to have current automatic door curtain, the wireless function of charging of automatically-controlled door can't realize, change the battery, electrical system, hydraulic system breaks down, when personnel can't meet an urgent need go out the jar, dismantle the emergency exit door body, dismouting intensity of labour is big, the problem that operating efficiency is low. However, in the prior art, the manual door curtain sags under the action of self weight, so that the coal mine vertical shaft cage is easy to shake when people get in and out, the door curtain is unstable, and accidents are easy to happen.

Accordingly, a person skilled in the art provides a novel emergency door curtain for a coal mine vertical cage to solve the problems set forth in the background art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a:

the utility model provides a novel colliery is emergent door curtain for vertical shaft cage, is including the door curtain sliding frame one, door curtain sliding frame two, door curtain sliding frame three that are located the cage entrance to a cave, the inboard activity of door curtain sliding frame is equipped with sliding bottom plate one, and door curtain sliding frame inboard top fixed mounting has roof one, rotates between sliding bottom plate one and the roof one and installs door curtain body one, sliding bottom plate both ends surface has all been seted up the screw, is equipped with reciprocating lead screw in the screw of sliding bottom plate one, and one-way pivot one and one-way pivot two are installed respectively at both ends about one reciprocating lead screw, the installation opposite direction of one-way pivot one and one-way pivot two is opposite, manual mechanism is installed to door curtain sliding frame one.

Preferably: a bull stick is installed on one-way pivot top, bull stick outer wall fixed mounting has a worm wheel one, a worm wheel one side meshing has a worm one, a worm middle part fixed mounting has the transfer line, the transfer line is connected with the motor, a bull stick two is installed to two bottoms of one-way pivot, a bull stick two outer walls are fixed with a worm wheel two, a worm wheel two one side meshing has a worm two, a worm two centre of a circle department fixed mounting has a sill bar.

Preferably: the second door curtain sliding frame and the third door curtain sliding frame are respectively positioned on two sides of the first door curtain sliding frame.

Preferably: a sliding bottom plate II is movably arranged on the inner side of the door curtain sliding frame II, a top plate II is fixedly arranged on the top of the inner side of the door curtain sliding frame II, a door curtain body II is rotatably arranged between the sliding bottom plate II and the top plate II, screw holes are formed in the surfaces of the two ends of the sliding bottom plate II, a reciprocating screw rod II is arranged in the screw hole of the sliding bottom plate II, a first unidirectional rotating shaft II and a second unidirectional rotating shaft II are respectively arranged at the upper end and the lower end of the reciprocating screw rod II, the mounting directions of the first unidirectional rotating shaft II and the second unidirectional rotating shaft II are opposite, a second rotating rod is arranged at the top end of the first unidirectional rotating shaft II, a first worm wheel I is fixedly arranged on the outer wall of the second rotating rod II, a first worm wheel I is meshed with one side of the first worm gear II, a second worm I is arranged on the outer wall of the transmission rod II, a second worm wheel II is fixed on the outer wall of the second rotating rod II, and a second worm wheel II is meshed with one side of the worm II, a second bottom rod is fixedly arranged at the center of a second circle of the second worm.

Preferably: the three inner sides of the door curtain sliding frames are movably provided with a third sliding bottom plate, the tops of the three inner sides of the door curtain sliding frames are fixedly provided with a third top plate, a third door curtain body is rotatably arranged between the third sliding bottom plate and the third top plate, screw holes are formed in the surfaces of the two ends of the third sliding bottom plate, a third reciprocating screw rod is arranged in the screw hole of the third sliding bottom plate, a first three-way rotating shaft and a second three-way rotating shaft are respectively arranged at the upper end and the lower end of the third reciprocating screw rod, the first three-way rotating shaft and the second three-way rotating shaft are arranged in opposite directions, a third rotating rod is arranged at the top end of the first three-way rotating shaft, a first three-way worm wheel is fixedly arranged on the outer wall of the third rotating rod, a first three-way worm wheel is meshed with a first three-way worm, a first three-way worm is arranged on the outer wall of a transmission rod, a second three-way rotating rod is arranged at the bottom end of the second three-way rotating shaft, a second three-way worm wheel is fixedly arranged on the outer wall, a second three-way worm wheel is meshed with a second worm wheel, a third bottom rod is fixedly arranged at the center of the second circle of the third worm.

Preferably, the following components: a sill bar middle part is fixed with the worm wheel No. four, and No. four worm wheel meshing has the worm No. four, and No. four worm both ends all rotate and run through electric door curtain sliding frame and the outer wall is fixed with gear one in the lump, and gear one meshing has gear two, and two fixedly connected with square barrels of gear, square barrel inside callipers are equipped with the square pole, and ratchet spanner is installed to the square pole, and ratchet spanner one end surface rotation installs the handle bar.

Preferably: a movable shaft is rotatably installed between two ends of the first bottom rod and the second bottom rod and between the two ends of the first bottom rod and the third bottom rod, and manual mechanisms are installed on the second bottom rod and the third bottom rod.

The utility model discloses a technological effect and advantage:

the utility model discloses, reciprocal lead screw, No. two reciprocal lead screws, No. three reciprocal lead screws are rotatory, make sliding bottom plate one, sliding bottom plate two, sliding bottom plate three respectively through the screw along door curtain sliding frame one, door curtain sliding frame two, door curtain sliding frame three rises, ascending sliding bottom plate one, sliding bottom plate two, sliding bottom plate three drives door curtain body one respectively, door curtain body two, door curtain body three rises, open door curtain sliding frame one, door curtain sliding frame two, door curtain sliding frame three, reach the effect of manual opening, and then make things convenient for personnel to manually open door curtain body one, door curtain body two, door curtain body three to reciprocal lead screw, No. two reciprocal lead screws, No. three reciprocal lead screws ensure door curtain body one, door curtain body two, door curtain body three more stable when opening.

Drawings

Fig. 1 is a schematic structural diagram of a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application;

fig. 2 is a schematic structural diagram of a motor in a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application;

FIG. 3 is a schematic structural diagram of a first sliding bottom plate of a novel emergency door curtain for a coal mine vertical shaft cage, which is provided by the embodiment of the application;

fig. 4 is a schematic structural diagram of a position a of a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application;

fig. 5 is a schematic structural diagram of a position C in a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application;

fig. 6 is a schematic structural diagram of a position B of a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application;

fig. 7 is a schematic structural diagram of a position D of a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a position E in a novel emergency door curtain for a coal mine vertical cage according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a position F in a novel emergency door curtain for a coal mine vertical cage according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a manual mechanism in a novel emergency door curtain for a coal mine vertical shaft cage according to an embodiment of the application.

Fig. 11 is a schematic structural diagram of a position G in a novel emergency door curtain for a coal mine vertical cage according to an embodiment of the present application.

In the figure:

1. a first door curtain sliding frame; 101. a first sliding bottom plate; 102. a first door curtain body; 103. a first top plate; 104. a first rotating rod I; 105. a first reciprocating screw rod; 106. a first worm wheel I; 107. a first unidirectional rotating shaft I; 108. a first worm; 109. a first unidirectional rotating shaft II; 110. a first worm gear II; 111. a first worm screw; 112. a first rotating rod II; 113. a first bottom rod;

2. a door curtain sliding frame II; 201. a second sliding bottom plate; 202. a second door curtain body; 203. a second top plate; 204. a second rotating rod I; 205. a second reciprocating screw rod; 206. a first worm wheel; 207. a first unidirectional rotating shaft; 208. a first worm; 209. a second unidirectional rotating shaft II; 210. a second worm gear II; 211. a second worm; 212. a second rotating rod II; 213. a second bottom rod;

3. a door curtain sliding frame III; 301. a third sliding bottom plate; 302. a door curtain body III; 303. a top plate III; 304. a third rotating rod I; 305. a third reciprocating screw rod; 306. a first third worm wheel; 307. a third unidirectional rotating shaft I; 308. a first worm; 309. a third unidirectional rotating shaft II; 310. a third worm gear II; 311. a third worm and a second worm; 312. a third rotating rod II; 313. a third bottom rod;

4. a manual mechanism; 401. a fourth worm gear; 402. a fourth worm; 403. a first gear; 404. a second gear; 405. a square cylinder; 406. a square bar; 407. a ratchet wrench; 408. a handle;

5. a transmission rod; 11. a motor;

6. a movable shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

Referring to fig. 1 to 9, in this embodiment, a novel emergency door curtain for a coal mine shaft cage is provided, which includes a first door curtain sliding frame 1, a second door curtain sliding frame 2, and a third door curtain sliding frame 3, wherein the first door curtain sliding frame 1 is movably provided with a first sliding bottom plate 101 at an inner side, the top of the inner side of the first door curtain sliding frame 1 is fixedly provided with a first top plate 103, a first door curtain body 102 is rotatably installed between the first sliding bottom plate 101 and the first top plate 103, both end surfaces of the first sliding bottom plate 101 are provided with screw holes, a first reciprocating screw rod 105 is arranged in the screw hole of the first sliding bottom plate 101, both upper and lower ends of the first reciprocating screw rod 105 are respectively provided with a first unidirectional rotating shaft 107 and a second unidirectional rotating shaft 109, the installation directions of the first unidirectional rotating shaft 107 and the second unidirectional rotating shaft 109 are opposite, the first door curtain sliding frame 1 is provided with a manual mechanism 4, the top end of the first unidirectional rotating shaft 107 is provided with a first rotating rod 104, the outer wall of the first rotating rod 104 is fixedly provided with a first worm gear 106, a first worm gear 108 is meshed on one side of a first worm wheel 106, a transmission rod 5 is fixedly arranged in the middle of the first worm gear 108, the transmission rod 5 is connected with a motor 11, a second first rotating rod 112 is arranged at the bottom end of a second one-way rotating shaft 109, a second worm gear 110 is fixed on the outer wall of the second first rotating rod 112, a second worm gear 111 is meshed on one side of the second worm gear 110, a first bottom rod 113 is fixedly arranged at the center of the second first worm gear 111, a second door curtain sliding frame 2 and a third door curtain sliding frame 3 are respectively positioned on two sides of the first door curtain sliding frame 1, a second sliding bottom plate 201 is movably arranged on the inner side of the second door curtain sliding frame 2, a second top plate 203 is fixedly arranged on the top of the inner side of the second door curtain sliding frame 2, a second door curtain body 202 is rotatably arranged between the second sliding bottom plate 201 and the second top plate 203, screw holes are respectively formed in the surfaces of two ends of the second sliding bottom plate 201, a second reciprocating screw rod 205 is arranged in the screw holes, a first one-way rotating shaft 207 and a second one-way rotating shaft 209 are respectively arranged at the upper end and the lower end of the second reciprocating screw rod 205, the mounting directions of a first unidirectional rotating shaft 207 II and a second unidirectional rotating shaft 209 are opposite, a second rotating rod 204 is mounted at the top end of the first unidirectional rotating shaft 207 II, a second worm wheel 206 is fixedly mounted on the outer wall of the second rotating rod 204, one side of the second worm wheel 206 is meshed with a first worm 208 II, the first worm 208 II is mounted on the outer wall of the transmission rod 5, a second rotating rod 212 is mounted at the bottom end of the second unidirectional rotating shaft 209 II, a second worm wheel 210 is fixed on the outer wall of the second rotating rod 212 II, one side of the second worm wheel 210 is meshed with a second worm 211, a second bottom rod 213 is fixedly mounted at the center of the second worm 211, a third sliding bottom plate 301 is movably mounted on the inner side of the third sliding door curtain frame 3, a third top plate 303 is fixedly mounted at the top of the inner side of the third door curtain sliding frame 3, a third door curtain body 302 is rotatably mounted between the third sliding bottom plate 301 and the third top plate 303, screw holes are formed in the surfaces of the two ends of the third sliding bottom plate 301, a third sliding screw hole is provided with a third reciprocating screw 305, the upper end and the lower end of a third reciprocating screw rod 305 are respectively provided with a first third unidirectional rotating shaft 307 and a second third unidirectional rotating shaft 309, the mounting directions of the first third unidirectional rotating shaft 307 and the second third unidirectional rotating shaft 309 are opposite, the top end of the first third unidirectional rotating shaft 307 is provided with a third rotating rod 304, the outer wall of the first third rotating rod 304 is fixedly provided with a first third worm wheel 306, one side of the first third worm wheel 306 is engaged with a first third worm 308, the first third worm 308 is mounted on the outer wall of a transmission rod 5, the bottom end of the second third unidirectional rotating shaft 309 is provided with a second third rotating rod 312, the outer wall of the second third rotating rod 312 is fixedly provided with a second third worm wheel 310, one side of the second third worm wheel 310 is engaged with a second third worm 311, the circle center of the second third worm 311 is fixedly provided with a third bottom rod 313, the middle part of the first bottom rod 113 is fixedly provided with a fourth worm 401, the fourth worm 401 is engaged with a fourth worm 402, two ends of the fourth worm 402 rotatably penetrate through a first electric door sliding frame 1 and are fixedly provided with a first gear 403, the first gear 403 is engaged with the second gear 404, the second gear 404 is fixedly connected with a square barrel 405, a square rod 406 is clamped in the square barrel 405, a ratchet wrench 407 is installed on the square rod 406, and a hand lever 408 is rotatably installed on one end surface of the ratchet wrench 407.

The motor 11 is connected and controlled by the existing control device;

after the motor 11 is started, the driving rod 5 is driven to rotate, the rotating driving rod 5 drives a plurality of first worms 108I, second worms 208 and third worms 308 to rotate, so that the first worms 108I are meshed with the first worm wheels 106 to rotate, the first second worm 208 is meshed with the first second worm 206, the first third worm 308 is meshed with the first third worm 306 to rotate, the first reciprocating screw 105, the second reciprocating screw 205 and the third reciprocating screw 305 are made to rotate, the first sliding base plate 101, the second sliding base plate 201 and the third sliding base plate 301 are made to ascend along the first door curtain sliding frame 1, the second door curtain sliding frame 2 and the third door curtain sliding frame 3 through screw holes respectively, the ascending first sliding base plate 101, the second sliding base plate 201 and the third sliding base plate 301 drive the first door curtain body 102, the second door curtain body 202 and the third door curtain body 302 to ascend respectively, the first door curtain sliding frame 1, the second door curtain sliding frame 2 and the third door curtain sliding frame 3 are opened, and the effect of electric opening is achieved;

when the motor 11 fails, a person manually rotates the ratchet wrench 407 through the hand lever 408, the ratchet wrench 407 drives the square lever 406 to rotate, the square lever 406 drives the square cylinder 405 to rotate, the square cylinder 405 drives the gear two 404 to rotate, the gear two 404 is meshed with the gear one 403 to rotate, the gear one 403 drives the worm 402 to rotate, the worm 402 is meshed with the worm wheel 401 to rotate, the worm wheel 401 drives the bottom rod 113, the bottom rod 113 drives the bottom rods 213 and 313 at the two ends to rotate simultaneously, so that the first worm two 111, the second worm two 211 and the third worm two 311 rotate to be respectively meshed with the worm wheel two 110, the worm wheel two 210 and the worm wheel two 310, the worm wheel two 110, the worm wheel two 210 and the worm wheel two 310 to rotate, the reciprocating screw rod 105, the reciprocating screw rod 205 and the reciprocating screw rod 305 to rotate, so that the sliding bottom plate one 101, the sliding bottom plate two 201 and the sliding bottom plate 201 rotate, The third sliding bottom plate 301 ascends along the first door curtain sliding frame 1, the second door curtain sliding frame 2 and the third door curtain sliding frame 3 through screw holes respectively, the ascending first sliding bottom plate 101, the second sliding bottom plate 201 and the third sliding bottom plate 301 drive the first door curtain body 102, the second door curtain body 202 and the third door curtain body 302 to ascend, the first door curtain sliding frame 1, the second door curtain sliding frame 2 and the third door curtain sliding frame 3 are opened, and the manual opening effect is achieved;

the first unidirectional rotating shaft 107 and the second unidirectional rotating shaft 109 are installed in opposite directions, so that when the first rotating rod 104 rotates, the first unidirectional rotating shaft 107 is clamped, the first rotating rod 104 can drive the first reciprocating screw rod 105 to rotate through the clamped first unidirectional rotating shaft 107, and the second unidirectional rotating shaft 109 is a movable end, so that the first reciprocating screw rod 105 movably rotates along the second unidirectional rotating shaft 109;

the mounting directions of the first unidirectional rotating shaft 207 and the second unidirectional rotating shaft 209 are opposite, so that when the first rotary rod 204 rotates, the first unidirectional rotating shaft 207 is blocked, the first rotary rod 204 can drive the second reciprocating screw rod 205 to rotate through the blocked first unidirectional rotating shaft 207, and the opposite second unidirectional rotating shaft 209 is a movable end, so that the second reciprocating screw rod 205 movably rotates along the second unidirectional rotating shaft 209;

the mounting directions of the first third unidirectional rotating shaft 307 and the second third unidirectional rotating shaft 309 are opposite, so that when the first third rotating rod 304 rotates, the first third unidirectional rotating shaft 307 is clamped, the first third rotating rod 304 can drive the third reciprocating screw rod 305 to rotate through the clamped first third unidirectional rotating shaft 307, and the second third opposite unidirectional rotating shaft 309 is a movable end, so that the third reciprocating screw rod 305 movably rotates along the second third unidirectional rotating shaft 309;

example 2

Referring to fig. 10 to 11, in the present embodiment, as a further improvement of the previous embodiment, the specific difference is that a movable shaft 6 is rotatably installed between two ends of the first bottom rod 113 and the second bottom rod 213 and the third bottom rod 313, and the manual mechanism 4 is installed on both the second bottom rod 213 and the third bottom rod 313.

The two ends of the first bottom rod 113 are separated from the second bottom rod 213 and the third bottom rod 313 through the movable shaft 6, so that the manual mechanism 4 can independently open the first door curtain sliding frame 1, the second door curtain sliding frame 2 or the third door curtain sliding frame 3 after rotating, and the independent opening effect is achieved.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims (7)

1. A novel emergency door curtain for a coal mine vertical shaft cage is characterized by comprising a door curtain sliding frame I (1), a door curtain sliding frame II (2) and a door curtain sliding frame III (3) which are positioned at a cage opening, a first sliding bottom plate (101) is movably arranged on the inner side of the first door curtain sliding frame (1), a first top plate (103) is fixedly arranged at the top of the inner side of the first door curtain sliding frame (1), a first door curtain body (102) is rotatably arranged between the first sliding bottom plate (101) and the first top plate (103), screw holes are formed in the surfaces of the two ends of the first sliding base plate (101), a first reciprocating screw rod (105) is arranged in the screw hole of the first sliding base plate (101), a first unidirectional rotating shaft I (107) and a first unidirectional rotating shaft II (109) are respectively installed at the upper end and the lower end of the first reciprocating screw rod (105), the first unidirectional rotating shaft I (107) and the first unidirectional rotating shaft II (109) are opposite in installation direction, and the manual mechanism (4) is installed on the electric door curtain sliding frame I (1).

2. The novel emergency door curtain for the coal mine vertical shaft cage according to claim 1, wherein a first rotating rod (104) is installed at the top end of a first unidirectional rotating shaft I (107), a first worm wheel I (106) is fixedly installed on the outer wall of the first rotating rod I (104), a first worm I (108) is meshed on one side of the first worm wheel I (106), a transmission rod (5) is fixedly installed in the middle of the first worm I (108), the transmission rod (5) is connected with a motor (11), a second rotating rod (112) is installed at the bottom end of a second unidirectional rotating shaft I (109), a second worm wheel (110) is fixed on the outer wall of the second rotating rod I (112), a second worm (111) is meshed on one side of the second worm wheel I (110), and a first bottom rod (113) is fixedly installed at the circle center of the second worm (111).

3. The novel emergency door curtain for the coal mine vertical shaft cage according to claim 1, wherein the second door curtain sliding frame (2) and the third door curtain sliding frame (3) are respectively positioned on two sides of the first door curtain sliding frame (1).

4. The novel emergency door curtain for the coal mine vertical shaft cage according to claim 3, wherein a second sliding bottom plate (201) is movably arranged on the inner side of the second door curtain sliding frame (2), a second top plate (203) is fixedly arranged at the top of the inner side of the second door curtain sliding frame (2), a second door curtain body (202) is rotatably arranged between the second sliding bottom plate (201) and the second top plate (203), screw holes are formed in the surfaces of two ends of the second sliding bottom plate (201), a second reciprocating screw rod (205) is arranged in each screw hole of the second sliding bottom plate (201), a first second unidirectional rotating shaft (207) and a second unidirectional rotating shaft (209) are respectively arranged at the upper end and the lower end of the second reciprocating screw rod (205), the first second unidirectional rotating shaft (207) and the second unidirectional rotating shaft (209) are arranged in opposite directions, a first second rotating rod (204) is arranged at the top end of the first unidirectional rotating shaft (207), a first worm wheel (206) is fixedly arranged on the outer wall of the second rotating rod (204), no. two worm wheel one (206) one side meshing has No. two worm one (208), and No. two worm one (208) are installed in transfer line (5) outer wall, and No. two bull stick two (212) are installed to No. two one-way pivot two (209) bottom ends, and No. two bull stick two (212) outer wall is fixed with No. two worm wheel two (210), and No. two worm wheel two (210) one side meshing has No. two worm two (211), and No. two worm two (211) centre of a circle department fixed mounting has No. two sill bars (213).

5. The novel emergency door curtain for the coal mine vertical shaft cage according to claim 1, wherein a third sliding bottom plate (301) is movably arranged on the inner side of a third door curtain sliding frame (3), a third top plate (303) is fixedly arranged at the top of the inner side of the third door curtain sliding frame (3), a third door curtain body (302) is rotatably arranged between the third sliding bottom plate (301) and the third top plate (303), screw holes are formed in the surfaces of two ends of the third sliding bottom plate (301), a third reciprocating screw rod (305) is arranged in the screw hole of the third sliding bottom plate (301), a first three-way rotating shaft (307) and a second three-way rotating shaft (309) are respectively arranged at the upper end and the lower end of the third reciprocating screw rod (305), the first three-way rotating shaft (307) and the second three-way rotating shaft (309) are opposite in installation directions, a third rotating rod (304) is arranged at the top end of the first three-way rotating shaft (307), a first three worm wheel (306) is fixedly arranged on the outer wall of the third rotating rod (304), a first third worm (308) is meshed on one side of a first third worm wheel (306), the first third worm (308) is installed on the outer wall of the transmission rod (5), a second third rotating rod (312) is installed at the bottom end of a second third unidirectional rotating shaft (309), a second third worm wheel (310) is fixed on the outer wall of the second third rotating rod (312), a second third worm (311) is meshed on one side of the second third worm wheel (310), and a third bottom rod (313) is fixedly installed at the circle center of the second third worm (311).

6. The novel emergency door curtain for the coal mine vertical shaft cage according to claim 2 is characterized in that a fourth worm wheel (401) is fixed in the middle of the first bottom rod (113), the fourth worm wheel (401) is meshed with a fourth worm (402), two ends of the fourth worm (402) penetrate through a first electric door curtain sliding frame (1) in a rotating mode, a first gear (403) is fixed on the outer wall of the first electric door curtain sliding frame (1), a second gear (404) is meshed with the first gear (403), the second gear (404) is fixedly connected with a square barrel (405), a square rod (406) is arranged in the square barrel (405) in a clamping mode, a ratchet wrench (407) is installed on the square rod (406), and a hand lever (408) is installed on one end surface of the ratchet wrench (407) in a rotating mode.

7. A novel emergency door curtain for a coal mine vertical shaft cage according to claim 6, wherein a movable shaft (6) is rotatably arranged between two ends of the first bottom rod (113) and the second bottom rod (213) and the third bottom rod (313), and manual mechanisms (4) are arranged on the second bottom rod (213) and the third bottom rod (313).

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