CN212282603U

CN212282603U - Rotary positioning type deep well rescue device

Info

Publication number: CN212282603U
Application number: CN202020794596.8U
Authority: CN
Inventors: 周旭冉; 王翔; 崔佳惠; 庞立
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-01-05
Anticipated expiration: 2030-05-12

Abstract

The utility model relates to the field of deep well rescue, in particular to a rotary positioning type deep well rescue device, which comprises a lifting unit, a rotary positioning unit and a rescue unit; the lifting unit is used for controlling the lifting of the whole device in the well, the rotary positioning unit is used for accurately positioning the trapped person, and the rescue unit is used for lifting the trapped person and rescuing the trapped person; the utility model discloses a design of the pole is stretched outward to circular arc supporter and a tooth in the lift unit makes the deep well rescue of the adaptable different bores of the device, through the rotation of revolving stage, the removal of the outer extension of circular arc and stock, makes the device can lift a seat accurate positioning to quilt trapping person crotch portion with machinery, simultaneously through electric putter's flexible, mechanical finger open and shut can effectively reduce the shared volume of rescue unit, the device of being convenient for implements the rescue.

Description

Rotary positioning type deep well rescue device

Technical Field

The utility model relates to a deep well rescue field, in particular to rotational positioning formula deep well rescue device.

Background

The agricultural motor-pumped well is an important farmland irrigation and human and animal drinking water facility in China, and is an important material basis for developing agricultural production. The agricultural motor-pumped well is a vertical deep well formed by drilling, generally ranges from tens of meters to tens of meters, and the diameter of the agricultural motor-pumped well is more than 300-600 millimeters. Due to lack of management, many people fall into the well every year, and many people are lost, and the life safety of the masses is seriously harmed by the falling event. Deep well rescue is a complex and dangerous one in rescue work, and particularly for a small-bore deep well, the diameter of a well mouth is small, the underground condition is complex, oxygen is thin, harmful gas possibly exists, and manual rescue is dangerous. And the underground space is narrow and dark, and the traditional rescue device is not easy to position and implement rescue. The rescue mode adopting large-scale excavating equipment is low in efficiency, and collapse accidents are easily caused, so that serious consequences are caused.

SUMMERY OF THE UTILITY MODEL

In order to compensate prior art's not enough, the utility model provides a rotational positioning formula deep well rescue device, its mainly adapted small-bore deep well rescue in the pit, through the design of circular arc supporter and a take the tooth to stretch out the pole outward in the lift unit, make the deep well rescue of the adaptable different bore of the device, through the rotation of revolving stage, the removal of circular arc protrusion and stock, make the device can lift a seat accurate positioning to quilt sleeper crotch portion with machinery, simultaneously through electric putter's flexible, the shared volume of rescue unit can effectively be reduced in opening and shutting of mechanical finger, the device of being convenient for implements the rescue.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model relates to a rotary positioning type deep well rescue device, which comprises a lifting unit, a rotary positioning unit and a rescue unit; the lifting unit is used for controlling the lifting of the whole device in the well, the rotary positioning unit is used for accurately positioning the trapped person, and the rescue unit is used for lifting the trapped person and rescuing the trapped person; wherein:

the lifting unit comprises a lifting unit shell, a pulley, a first motor, a first gear, a first toothed extension rod, a first sliding groove, an arc supporting body, a shock absorber and a universal wheel; the pulley is fixedly connected to the upper part of the lifting unit shell and used for mounting a steel cable, and the steel cable is connected with a ground winch; the first motor is fixedly connected to the upper part of the inner wall of the lifting unit shell, a first gear is rotatably arranged on a rotating shaft of the first motor, and the first motor is used for driving the first gear to rotate so as to drive the first toothed extension rod to move; the first toothed overhanging rod is arranged in the first sliding groove; the arc supporting body is fixedly connected to the tail end of the first toothed extending rod and moves along with the movement of the first toothed extending rod; the shock absorber is fixedly connected to the outer part of the arc support body and used for improving the passing capacity of the universal wheel; the universal wheel link firmly in the bumper shock absorber, the universal wheel is used for just being used for supporting the lift unit and guaranteeing the device's stability through the unevenness wall of a well.

As a preferred scheme of the utility model, the rotary positioning unit of the deep well rescue device of the utility model comprises a rotary positioning unit shell, a rotary table, a second motor, a first coupler, a third motor, a second gear, a second toothed external extension rod, a second chute, an arc external extension body, a lead screw fixing support, a first slide block, a fourth motor, a second coupler, a slide bar and a slide bar fixing support; the rotary positioning unit shell is rotatably arranged at the lower part of the lifting unit shell through a rotary table; the rotary table is provided with a flange plate, the flange plate is used for stably connecting the rotary positioning unit shell and the lifting unit shell, the rotary table is used for rotating the rotary positioning unit, and balls are arranged in the rotary table to reduce friction force during rotation; the second motor is fixedly connected to the lower part of the inner wall of the shell of the lifting unit and used for driving the rotary table to rotate so as to realize the rotation of the rotary positioning unit; the first coupler is fixedly connected to a rotating shaft of the second motor and is used for connecting the second motor and the rotary table; the third motor is fixedly connected to the upper part of the inner wall of the shell of the rotary positioning unit and is used for driving the second gear to rotate; the second gear is rotatably arranged on a third motor rotating shaft; the second toothed external extension rod is arranged in the second sliding groove, the second toothed external extension rod is similar to the first toothed external extension rod in structure, the second toothed external extension rod is meshed with the second gear, and the second gear rotates to drive the second toothed external extension rod to move so as to drive the arc external extension body to move; the arc extending body is fixedly connected to the tail end of the second toothed extending rod; the screw rod is rotatably arranged in the screw rod fixing support, and the screw rod rotates to drive the first sliding block to move and simultaneously drive the rescue unit to move; the screw rod fixing support is fixedly connected to the lower parts of the rotary positioning unit shell and the arc outer extending body; the first sliding block is rotatably arranged on the screw rod, and a lug is arranged at the lower part of the first sliding block and used for installing the long rod; the fourth motor is fixedly connected to the lower part of the shell of the rotary positioning unit; the second coupler is fixedly connected with a rotating shaft of the fourth motor and the screw rod and is used for connecting the fourth motor and the screw rod; the sliding rod is fixedly connected to the No. four motor support and is slidably arranged in the sliding rod fixing support; the slide bar fixing support is fixedly connected to the lower portion of the rotary positioning unit shell, and balls are arranged inside the slide bar fixing support to reduce friction when the slide bar slides.

As a preferred scheme of the utility model, the rotary positioning type deep well rescue device of the utility model comprises a long rod, a connecting bolt, a mechanical lifting seat and an electric push rod; the long rod is in a two-section design, the upper section and the lower section are connected by connecting bolts, the two-section design is convenient for transporting the device, the top of the long rod is provided with a lug, and the long rod is arranged at the bottom of the first sliding block; the mechanical lifting seat is rotatably arranged on the long rod and is used for lifting the crotch of the trapped person; the electric push rod is rotatably connected to the long rod and the mechanical lifting seat, and the electric push rod stretches and retracts to drive the mechanical lifting seat to lift and fall.

As an optimal scheme of the utility model, a rotational positioning formula deep well rescue device, a take tooth overhanging bar lower part be equipped with the arch, and inside the arch was located a spout, the arch played keep taking tooth overhanging bar slip stable and spacing effect outward.

As an optimal selection scheme, a rotational positioning formula deep well rescue device, a gear and a tooth outrigger meshing, the function through a motor drives a gear revolve and drives a tooth outrigger removal simultaneously to this realization changes this device diameter in order to adapt to different well heads.

As an optimal scheme of the utility model, a rotational positioning formula deep well rescue device, the removal of the outer protrusion of circular arc drive whole lead screw and remove, drive the rescue unit simultaneously and remove.

As an optimal scheme, a rotational positioning formula deep well rescue device, rotational positioning unit casing lower part be equipped with camera, light filling lamp and oxygen conveyer pipe, the camera is used for the person of suing and labouring to observe the condition in the pit, the oxygen conveyer pipe is used for providing oxygen for being stranded.

As a preferred scheme of the utility model, the mechanical lifting seat of the rotary positioning type deep well rescue device of the utility model comprises a middle support body, a mechanical finger, a connecting rib, a screw rod and a second slider; the middle supporting body is rotatably connected with the long rod and the electric push rod, lugs are arranged on two sides of the middle supporting body, the middle supporting body is used for connecting other parts, and a motor is arranged in the middle supporting body to drive the screw rod to rotate; the mechanical fingers are rotatably arranged on two sides of the middle support body and are symmetrically distributed; the connecting rib is rotatably connected with the mechanical finger and the second sliding block; the screw is rotatably arranged in the middle support body; the second sliding block is rotatably arranged on the screw rod, and the second sliding block moves to drive the connecting rib to move so as to realize the opening and closing of the mechanical fingers.

The utility model has the advantages that:

1. a rotational positioning formula deep well rescue device, its design through circular arc supporter and a tooth stretch out the pole outside in the lifting unit, make the device realize changing the deep well rescue of diameter in order to adapt to different bores.

2. A rotational positioning formula deep well rescue device, through the removal of the rotation of revolving stage, the outer extension of circular arc and stock, make the device can lift the seat accurate positioning to stranded person's crotch portion with machinery.

3. A rotational positioning formula deep well rescue device, through the flexible of electric putter, the shared volume of rescue unit can effectively be reduced in opening and shutting of mechanical finger, the device implementation rescue of being convenient for.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic structural view of the mechanical lifting seat of the present invention;

fig. 5 is a schematic structural view of the mechanical lifting seat of the present invention;

fig. 6 is a schematic structural view of a first toothed outrigger of the present invention;

in the figure: lifting unit 1, rotary positioning unit 2, rescue unit 3, lifting unit shell 11, pulley 12, motor 13, gear 14, toothed extension rod 15, chute 16, arc support 17, shock absorber 18, universal wheel 19, rotary positioning unit shell 201, turntable 202, motor 203, coupling 204, motor 205, gear 206, toothed extension rod 207, chute 208, arc extension body 209, screw 210, screw fixing support 211, slider 212, motor 213, coupling 214, slide rod 215, slide rod fixing support 216, long rod 31, connecting bolt 32, mechanical lifting seat 33, electric push rod 34, middle support 331, mechanical finger 332, connecting rib 333, screw 334 and slider 335.

Detailed Description

The following further explains the present invention by way of specific examples.

As shown in fig. 1 to 6, the rotary positioning type deep well rescue device of the present invention comprises a lifting unit 1, a rotary positioning unit 2 and a rescue unit 3; the lifting unit 1 is used for controlling the lifting of the whole device in a well, the rotary positioning unit 2 is used for accurately positioning a trapped person, and the rescue unit 3 is used for lifting the trapped person and rescuing the trapped person; wherein:

the lifting unit 1 comprises a lifting unit shell 11, a pulley 12, a first motor 13, a first gear 14, a first toothed extension rod 15, a first sliding groove 16, an arc support body 17, a shock absorber 18 and a universal wheel 19; the pulley 12 is fixedly connected to the upper part of the lifting unit shell 11, the pulley 12 is used for installing a steel cable, and the steel cable is connected with a ground winch; the first motor 13 is fixedly connected to the upper part of the inner wall of the lifting unit shell 11, the first gear 14 is rotatably mounted on a rotating shaft of the first motor 13, and the first motor 13 is used for driving the first gear 14 to rotate so as to drive the first toothed extending rod 15 to move; the first toothed external extension rod 15 is arranged in the first sliding groove 16; the arc supporting body 17 is fixedly connected to the tail end of the first toothed externally extending rod 15, and the arc supporting body 17 moves along with the movement of the first toothed externally extending rod 15; the shock absorber 18 is fixedly connected to the outside of the arc support body 17, and the shock absorber 18 is used for improving the passing capacity of the universal wheel 19; the universal wheel 19 is fixedly connected with the shock absorber 18, and the universal wheel 19 is used for passing through an uneven well wall and supporting the lifting unit 1 and ensuring the stability of the device.

As shown in fig. 1 to 6, the rotary positioning unit 2 of the deep well rescue device of the present invention includes a rotary positioning unit casing 201, a turntable 202, a second motor 203, a first coupler 204, a third motor 205, a second gear 206, a second toothed external extension rod 207, a second sliding chute 208, an arc external extension body 209, a lead screw 210, a lead screw fixing support 211, a first sliding block 212, a fourth motor 213, a second coupler 214, a sliding rod 215, and a sliding rod fixing support 216; the rotary positioning unit shell 201 is rotatably arranged at the lower part of the lifting unit shell 11 through a turntable 202; the turntable 202 is provided with a flange plate, the flange plate is used for stably connecting the rotating and positioning unit shell 201 and the lifting unit shell 11, the turntable 202 is used for rotating the rotating and positioning unit 2, and balls are arranged in the turntable 202 to reduce friction force during rotation; the second motor 203 is fixedly connected to the lower part of the inner wall of the lifting unit shell 11, and the second motor 209 is used for driving the rotary table 202 to rotate so as to realize the rotation of the rotary positioning unit 2; the first coupler 204 is fixedly connected to a rotating shaft of the second motor 203, and the first coupler 204 is used for connecting the second motor 203 and the turntable 202; the third motor 205 is fixedly connected to the upper part of the inner wall of the rotating and positioning unit shell 201, and the third motor 205 is used for driving the second gear 206 to rotate; the second gear 206 is rotatably arranged on a rotating shaft of the third motor 205; the second toothed external extension rod 207 is installed in the second sliding groove 208, the second toothed external extension rod 207 has a structure similar to that of the first toothed external extension rod 15, the second toothed external extension rod 207 is meshed with the second gear 206, and the rotation of the second gear 206 drives the second toothed external extension rod 207 to move so as to drive the arc external extension body 209 to move; the arc outer extension 209 is fixedly connected with the tail end of the second toothed outer extension rod 207; the screw rod 210 is rotatably arranged in the screw rod fixing support 211, and the screw rod 210 rotates to drive the first sliding block 212 to move and simultaneously drive the rescue unit 3 to move; the screw rod fixing support 211 is fixedly connected to the lower parts of the rotary positioning unit shell 201 and the arc outer extension 209; the first sliding block 212 is rotatably arranged on the screw rod 210, and the lower part of the first sliding block 212 is provided with a lug which is used for installing the long rod 31; the fourth motor 213 is fixedly connected to the lower part of the rotary positioning unit shell 201; the second coupler 214 is fixedly connected to a rotating shaft of the fourth motor 213 and the screw rod 210, and the second coupler 214 is used for connecting the fourth motor 213 and the screw rod 210; the sliding rod 215 is fixedly connected to a fourth motor 213 support and is slidably mounted in a sliding rod fixing support 216; the slide rod fixing support 216 is fixedly connected to the lower portion of the rotary positioning unit casing 201, and balls are arranged inside the slide rod fixing support 216 to reduce friction during sliding.

As shown in fig. 1 to 6, in the deep well rescue device of the present invention, the rescue unit 3 includes a long rod 31, a connecting bolt 32, a mechanical lifting seat 33 and an electric push rod 34; the long rod 31 is designed in a two-section mode, the upper section and the lower section are connected through the connecting bolt 32, the device is convenient to transport due to the two-section mode, the top of the long rod 31 is provided with a lug, and the long rod 31 is installed at the bottom of the first sliding block 212; the mechanical lifting seat 33 is rotatably arranged on the long rod 31, and the mechanical lifting seat 33 is used for lifting the crotch of the trapped person; the electric push rod 34 is rotatably connected to the long rod 31 and the mechanical lifting seat 33, and the electric push rod 34 extends and retracts to drive the mechanical lifting seat 33 to lift up and down.

As shown in fig. 1 to 6, the utility model relates to a rotary positioning formula deep well rescue device, take tooth stretch out pole 15 lower part be equipped with the arch No. one, and the arch is located 16 insides of spout, the arch plays to keep taking tooth stretch out pole 15 to slide stably and spacing effect.

As shown in fig. 1 to 6, a rotational positioning formula deep well rescue device, a gear 14 and a take tooth to stretch out pole 15 meshing outward, drive a gear 14 through a motor 13's function and rotate and drive a take tooth to stretch out pole 15 simultaneously and remove to this realization changes this device diameter in order to adapt to different well heads.

As shown in fig. 1 to 6, the utility model discloses a rotational positioning formula deep well rescue device, the removal of circular arc outer extension 209 drive whole lead screw 210 and remove, drive rescue unit 3 simultaneously and remove.

As shown in fig. 1 to 6, a rotational positioning formula deep well rescue device, the rotational positioning unit casing 201 lower part be equipped with camera, light filling lamp and oxygen conveyer pipe, the camera is used for the person of suing and labouring to observe the condition in the pit, the oxygen conveyer pipe is used for providing oxygen for the person of being trapped.

As shown in fig. 1 to 6, in the deep well rescue device of the present invention, the mechanical lifting seat 33 includes a middle support body 331, a mechanical finger 332, a connecting rib 333, a screw 334, and a second slider 335; the middle support body 331 is rotatably connected with the long rod 31 and the electric push rod 34, two sides of the middle support body 331 are provided with lugs, the middle support body 31 is used for connecting other parts, and a motor is arranged in the middle support body 31 to drive the screw rod 334 to rotate; the mechanical fingers 332 are rotatably mounted at two sides of the middle support body 331 and the mechanical fingers 332 are symmetrically distributed; the connecting rib 333 is rotatably connected with the mechanical finger 332 and the second sliding block 335; the screw 334 is rotatably installed inside the middle support body 331; the second sliding block 335 is rotatably mounted on the screw 334, and the movement of the second sliding block 335 drives the connecting rib 333 to open and close the mechanical finger 332.

When the device works, a rescuer firstly connects the steel cable to a ground winch through the pulley 12, places the device at a wellhead, controls the first motor 13 to operate according to the diameter of the wellhead to drive the arc support body 17 to extend out, and leads the universal wheel 19 to be tightly attached to a well wall; at the moment, the ground winch starts to operate, the device is put down, the universal wheels 19 move along the well wall, meanwhile, the camera, the light supplement lamp and the oxygen conveying pipe are turned on, and a rescuer observes the conditions in the well and the position of a trapped person on a ground monitor; when the device is close to a trapped person, the winch stops operating, the position of the long rod 31 is adjusted through the operation of the second motor 203, the third motor 205 and the fourth motor 213 at the moment, a rescuer adjusts the long rod 34 to a gap between the trapped person and a well wall, meanwhile, the electric push rod 34 contracts and the screw 334 rotates to lower the mechanical lifting seat 33 and draw the mechanical fingers 332 together to reduce the volume of the rescue unit 3; after the position of the long rod 31 is adjusted, the winch is started to enable the device to move continuously along the well wall, the mechanical supporting seat 33 is placed below the crotch of the trapped person, and the position of the mechanical supporting seat 33 is finely adjusted through the operation of the fourth motor 213; after the mechanical supporting seat 33 is placed on the crotch of the trapped person, the electric push rod 34 extends out, the screw 334 rotates to drive the mechanical supporting seat 33 to lift and the mechanical finger 332 opens, at the moment, the winch operates to lift the device, and the trapped person is rescued.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the invention without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rotational positioning formula deep well rescue device which characterized in that: comprises a lifting unit (1), a rotary positioning unit (2) and a rescue unit (3); wherein:

the lifting unit (1) comprises a lifting unit shell (11), a pulley (12), a first motor (13), a first gear (14), a first toothed extension rod (15), a first sliding groove (16), an arc support body (17), a shock absorber (18) and a universal wheel (19); the pulley (12) is fixedly connected to the upper part of the lifting unit shell (11); the first motor (13) is fixedly connected to the upper part of the inner wall of the lifting unit shell (11), and the first gear (14) is rotatably arranged on a rotating shaft of the first motor (13); the first toothed external extension rod (15) is arranged in the first sliding groove (16); the arc support body (17) is fixedly connected with the tail end of the first toothed extending rod (15); the shock absorber (18) is fixedly connected to the outer part of the arc support body (17); the universal wheel (19) is fixedly connected with the shock absorber (18).

2. The rotary positioning type deep well rescue device according to claim 1, characterized in that the rotary positioning unit (2) comprises a rotary positioning unit housing (201), a turntable (202), a second motor (203), a first coupler (204), a third motor (205), a second gear (206), a second toothed extension rod (207), a second sliding groove (208), an arc extension body (209), a screw rod (210), a screw rod fixing support (211), a first sliding block (212), a fourth motor (213), a second coupler (214), a sliding rod (215) and a sliding rod fixing support (216); the rotary positioning unit shell (201) is rotatably arranged at the lower part of the lifting unit shell (11) through a turntable (202); the rotary table (202) is provided with a flange plate, the flange plate is used for stably connecting the rotary positioning unit shell (201) and the lifting unit shell (11), and the rotary table (202) is used for rotating the rotary positioning unit (2); the second motor (203) is fixedly connected to the lower part of the inner wall of the lifting unit shell (11); the first coupler (204) is fixedly connected to a rotating shaft of the second motor (203), and the first coupler (204) is used for connecting the second motor (203) and the turntable (202); the third motor (205) is fixedly connected to the upper part of the inner wall of the shell (201) of the rotary positioning unit; the second gear (206) is rotatably arranged on a rotating shaft of the third motor (205); the second toothed external extension rod (207) is arranged in the second sliding groove (208); the arc outer extension body (209) is fixedly connected with the tail end of the second toothed outer extension rod (207); the screw rod (210) is rotatably arranged in the screw rod fixing support (211); the screw rod fixing support (211) is fixedly connected to the lower parts of the rotary positioning unit shell (201) and the arc outer extending body (209); the first sliding block (212) is rotatably arranged on the screw rod (210), and a lug is arranged at the lower part of the first sliding block (212); the fourth motor (213) is fixedly connected with the lower part of the rotary positioning unit shell (201); the second coupler (214) is fixedly connected with a rotating shaft of the fourth motor (213) and the screw rod (210), and the second coupler (214) is used for connecting the fourth motor (213) and the screw rod (210); the sliding rod (215) is fixedly connected to the fourth motor (213) support and is slidably mounted in the sliding rod fixing support (216); the sliding rod fixing support (216) is fixedly connected to the lower portion of the rotary positioning unit shell (201).

3. The rotary positioning type deep well rescue device according to claim 1, characterized in that: the rescue unit (3) comprises a long rod (31), a connecting bolt (32), a mechanical lifting seat (33) and an electric push rod (34); the long rod (31) is designed in a two-section mode, and the upper section and the lower section are connected by a connecting bolt (32); the top of the long rod (31) is provided with a lug, and the long rod (31) is arranged at the bottom of the first sliding block (212); the mechanical lifting seat (33) is rotatably arranged on the long rod (31); the electric push rod (34) is rotatably connected with the long rod (31) and the mechanical lifting seat (33).

4. The rotary positioning type deep well rescue device according to claim 1, characterized in that: the lower part of the first toothed externally extending rod (15) is provided with a protrusion, the protrusion is positioned in the first sliding groove (16), and the protrusion plays a role in keeping the toothed externally extending rod (15) stable in sliding and limited.

5. The rotary positioning type deep well rescue device according to claim 1, characterized in that: the first gear (14) is meshed with the first toothed externally extending rod (15), and the first gear (14) is driven to rotate and the first toothed externally extending rod (15) is driven to move by the operation of the first motor (13), so that the diameter of the device can be changed to adapt to different well mouths.

6. The rotary positioning type deep well rescue device according to claim 2, characterized in that: the movement of the arc outer extension body (209) drives the whole screw rod (210) to move.

7. The rotary positioning type deep well rescue device according to claim 2, characterized in that: rotatory positioning unit casing (201) lower part be equipped with camera, light filling lamp and oxygen conveyer pipe, the camera is used for the person of suing and labouring to observe the condition in the pit, the oxygen conveyer pipe is used for providing oxygen for the stranded person.

8. The rotary positioning type deep well rescue device according to claim 3, characterized in that: the mechanical lifting seat (33) comprises a middle support body (331), a mechanical finger (332), a connecting rib (333), a screw rod (334) and a second sliding block (335); the middle supporting body (331) is rotatably connected with the long rod (31) and the electric push rod (34), and lugs are arranged on two sides of the middle supporting body (331); the mechanical fingers (332) are rotatably arranged on two sides of the middle support body (331) and are symmetrically distributed; the connecting rib (333) is rotatably connected with a mechanical finger (332) and a second sliding block (335); the screw (334) is rotatably arranged in the middle support body (331); the second sliding block (335) is rotatably arranged on the screw rod (334).