CN112031518A

CN112031518A - Safety device for water conservancy wellhead overhaul

Info

Publication number: CN112031518A
Application number: CN202010890273.3A
Authority: CN
Inventors: 刘世亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2020-12-04

Abstract

The invention discloses a safety protection device for water conservancy wellhead overhaul, and relates to the technical field of water conservancy projects. This safety device is used in water conservancy well head maintenance, back plate through setting up, support frame one, interconnect between support frame two and the connecting plate, can form a square fender that encloses, and through the removal wheel that sets up, can remove the device to the well head side that needs carry out the construction and enclose the fender, and then realize enclosing the fender protection to the well head, play the warning effect to passing pedestrian vehicle etc. improves the security when the workman carries out the construction in carrying out the water conservancy well.

Description

Safety device for water conservancy wellhead overhaul

Technical Field

The invention relates to the technical field of hydraulic engineering, in particular to a safety protection device for water conservancy wellhead overhaul.

Background

Hydraulic engineering is an engineering built for controlling and allocating surface water and underground water in the nature to achieve the purpose of removing harmful substances and benefiting, is also called water engineering, and water is a valuable resource essential for human production and life, but the naturally existing state of water does not completely meet the needs of human beings. Only when hydraulic engineering is built, water flow can be controlled, flood disasters are prevented, and water quantity is adjusted and distributed to meet the requirements of people on water resources in life and production. Hydraulic engineering needs to build various types of hydraulic buildings such as dams, dikes, spillways, water gates, water inlets, channels, transition troughs, rafts, fishways and the like so as to achieve the aims.

Can set up a lot of drainage wells on urban road and come to carry out the drainage to the road, with the normal current of assurance road, the workman need enclose the fender to the well head when overhauing the water conservancy well head, with the safety of guaranteeing the construction operation, and these enclose and keep off the function comparatively single, and inconvenient will enclose the fender and fix beside the well head, it is inconvenient and unsafe during the use, and the workman still need use ladder etc. to enter into the well when overhauing the water conservancy well head, need fix the ladder simultaneously and avoid taking place to empty, the security is lower.

Therefore, a safety protection device for water conservancy wellhead overhaul is needed to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a safety protection device for water conservancy wellhead overhaul, which solves the problems that the existing barrier has single function, is inconvenient to fix the barrier beside a wellhead and is inconvenient and unsafe to use, a worker needs to enter a well by using a ladder and the like when overhauling a water conservancy wellhead, the ladder needs to be fixed to avoid toppling, and the safety is low.

(II) technical scheme

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a safety protection device for water conservancy wellhead overhaul comprises a rear plate, wherein the left side and the right side of the front side wall of the rear plate are respectively fixedly connected with a first support frame and a second support frame, the lower sides of the front sides of the opposite surfaces of the first support frame and the second support frame are fixedly connected with a same connecting plate, the front ends and the rear ends of the bottom side walls of the first support frame and the second support frame are respectively fixedly connected with a moving wheel, a square frame is arranged on one side of the rear plate close to the upper part, the left side and the right side of the square frame are respectively fixedly connected with a first bearing and the left side and the right side of a support shaft, the support shaft is fixedly connected with two circular plates, the two ends of the front side wall of the rear plate close to the lower side are respectively fixedly connected with a first support block, the two support blocks are respectively fixedly connected with the left, the left side and the right side of the front end of the crank connecting rod are fixedly connected with limiting rods, the left end of the crank connecting rod extends to the left side wall of the left side supporting block I and is fixedly connected with a bevel gear I, the bevel gear I is meshed with a bevel gear II, the bevel gear II is fixedly connected to the rear end of the rotating shaft, the front side and the rear side of the rotating shaft are fixedly connected with a supporting block II through a bearing IV, the two supporting blocks II are respectively and fixedly connected to the front end and the rear end of the right side wall of the supporting frame I, the front end of the rotating shaft is fixedly connected with a bull gear, the middle part of the rear side wall of the connecting plate is fixedly connected with an L-shaped plate, the rear end of the L-shaped plate and the opposite surface of the connecting plate are fixedly connected with the front end and the rear end of a threaded, the left side wall fixedly connected with square sliding sleeve of screw thread section of thick bamboo, sliding connection has square joint board in the square sliding sleeve.

Preferably, the left side and the right side of the supporting shaft are positioned on two opposite surfaces of the circular plates and are fixedly connected with pull ropes, a plurality of pedal rods are fixedly connected between the pull ropes, and the length of each pedal rod is not less than 35 cm.

Preferably, the left side of the square frame is located on the rear plate and is provided with a notch, the left end of the supporting shaft extends into the notch and is fixedly connected with the rotating disc, and the left end of the supporting shaft is fixedly connected with the left side wall of the notch through a second bearing.

Preferably, the right side of square frame is located fixedly connected with sliding sleeve on the back plate, sliding connection has the inserted bar in the sliding sleeve, and the socket joint of seting up on the left end of inserted bar and the left side plectane, the right-hand member fixedly connected with pull ring of inserted bar, the cover is equipped with the spring on the inserted bar, and both ends respectively with sliding sleeve and pull ring fixed connection about the spring.

Preferably, the diameter of the large gear is 5 times the diameter of the small gear.

Preferably, the upper sides of the opposite surfaces of the first support frame and the second support frame are fixedly connected with hanging rings, and the diameters of the cross sections of the hanging rings are not as low as 1 cm.

Preferably, the right side wall of the threaded cylinder is fixedly connected with a T-shaped sliding block, the T-shaped sliding block is in sliding connection with a T-shaped sliding groove formed in the left side wall of the L-shaped plate, the front side wall of the square sliding sleeve is fixedly connected with a nut, and a screw is in threaded connection with the nut.

Preferably, the lower side of the square frame is located on the front side wall of the bottom plate and is fixedly connected with two clamping sleeves, and the clamping sleeves are matched with the crank connecting rod.

Preferably, the diameter of the first bevel gear is 3 times of the diameter of the second bevel gear.

(III) advantageous effects

The invention has the beneficial effects that:

1. this safety device is used in water conservancy well head maintenance, back plate through setting up, support frame one, interconnect between support frame two and the connecting plate, can form a square fender that encloses, and through the removal wheel that sets up, can remove the device to the well head side that needs carry out the construction and enclose the fender, and then realize enclosing the fender protection to the well head, play the warning effect to passing pedestrian vehicle etc. improves the security when the workman carries out the construction in carrying out the water conservancy well.

2. The safety protection device for water conservancy wellhead overhaul can directly place the rope ladder formed between the pull rope and the pedal rod into a wellhead through the mutual matching of the arranged rear plate, the square frame, the supporting shaft, the circular plate, the pull rope and the pedal rod, is convenient for workers to enter the wellhead for overhaul, and can roll the rope ladder formed between the pull rope and the pedal rod to the supporting shaft when not in use, so that the rope ladder is convenient to store, the crank connecting rod can be rotated to the front side to be right above the wellhead through the fixed connection of the supporting block I and the rear plate at the two ends of the crank connecting rod, the two bent connecting rods can be lapped with the side wall of the wellhead, so that the rope ladder formed between the pull rope and the pedal rod can be supported by the front end of the crank connecting rod, the pull rope can be prevented from directly rubbing with the side wall of the wellhead to break, and the rope ladder formed between the pull rope and the pedal rod can vertically go deep into the wellhead, the device is more convenient and safer when workers move up and down in a wellhead.

3. The safety protection device for water conservancy wellhead overhaul is characterized in that a first bevel gear, a second bevel gear, a rotating shaft, a gear wheel, an L-shaped plate, a threaded rod, a pinion, a chain, a threaded cylinder, a square sliding sleeve and a square clamping plate are arranged, when a crank connecting rod is rotated to the front side right above a wellhead, the left end of the crank connecting rod can drive the rotating shaft to rotate through the meshing of the first bevel gear and the second bevel gear, the front end of the rotating shaft drives the pinion to rotate through the gear wheel and the chain, further the threaded rod can rotate, the threaded rod is in threaded connection with the threaded cylinder, the square clamping plate can be driven to slide to the front side through the square sliding sleeve, the square clamping plate can be in lap joint with the inner wall of the front side of the wellhead at the moment, and three supporting points can be in lap joint with the side wall of the wellhead through the matching of two bent lap joint rods at the bottom side of the crank, because to the pressing of crank connecting rod, square joint board and two crooked overlap joint poles can carry out inseparable overlap joint with the lateral wall of well head, and then realize that the device is stable fixes on the well head, make the device can not take place to slide, more stable and safety during the use.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is a left side view of the threaded rod of the present invention;

FIG. 5 is a left side view of the L-shaped plate of the present invention;

FIG. 6 is a left side view of the crank connecting rod of the present invention;

fig. 7 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention.

In the figure: 1 rear plate, 2 support frames I, 3 support frames II, 4 connecting plates, 5 moving wheels, 6 square frames, 7 support shafts, 8 round plates, 9 pull ropes, 10 pedal rods, 11 notches, 12 rotating disks, 13 sliding sleeves, 14 inserting rods, 15 pull rings, 16 springs, 17 support blocks I, 18 crank connecting rods, 19 bent lap joint rods, 20 limiting rods, 21 clamping sleeves, 22 bevel gear I, 23 bevel gear II, 24 rotating shafts, 25 support blocks II, 26 large gears, 27L-shaped plates, 28 threaded rods, 29 small gears, 30 chains, 31 threaded cylinders, 32T-shaped sliding blocks, 33T-shaped sliding grooves, 34 square sliding sleeves, 35 square clamping plates, 36 screw caps and 37 screw rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the present invention provides a technical solution: a safety protection device for water conservancy wellhead overhaul comprises a rear plate 1, wherein the rear plate 1 has a blocking effect on the rear side of the device, two pull ropes 9 are conveniently stored in the rear plate 1 through a square frame 6 and a notch 11, the left side and the right side of the front side wall of the rear plate 1 are respectively and fixedly connected with a first support frame 2 and a second support frame 3, the first support frame 2 and the second support frame 3 have a connecting effect on the rear plate 1 and a connecting plate 4, a square enclosure can be formed through the connection among the rear plate 1, the first support frame 2, the second support frame 3 and the connecting plate 4, further the wellhead is enclosed and protected, the safety of passing pedestrians and vehicles can be improved, the safety of workers during construction in a water conservancy well can be improved, the same connecting plate 4 is fixedly connected below the front side of the opposite surfaces of the first support frame 2 and the second support frame 3, the connecting plate 4 has a connecting effect on the front ends of the first support frame 2 and the second support frame 3, and through setting the connecting plate 4 at one side below, the workers can conveniently enter the enclosure formed among the back plate 1, the support frame I2, the support frame II 3 and the connecting plate 4 and enter the well mouth, the front and back ends of the bottom side walls of the support frame I2 and the support frame II 3 are fixedly connected with the moving wheels 5, the moving wheels 5 are convenient for the device to move, the device is convenient to push to the position right above the well mouth, the upper side of the back plate 1 is provided with a square frame 6, the left and right side walls of the square frame 6 are fixedly connected with a bearing I and fixedly connected with the left and right sides of a support shaft 7, a winding disc can be formed through the support shaft 7 arranged in the square frame 6 and two circular plates 8 arranged on the support shaft 7, two pull ropes 9 can be wound, and then a rope ladder formed between the two pull ropes 9 and a pedal rod 10 can be wound, two circular plates 8 are fixedly connected on the support shaft, the two ends of the lower side of the front side wall of the rear plate 1 are fixedly connected with a first supporting block 17, the two first supporting blocks 17 support the two ends of a crank connecting rod 18 through three bearings, so that the crank connecting rod 18 can be conveniently rotated, the two supporting blocks 7 are fixedly connected with the left side and the right side of the crank connecting rod 18 through three bearings, the left side and the right side of the bottom of the front side of the crank connecting rod 18 are fixedly connected with a bent overlap rod 19, after the crank connecting rod 18 is clamped with the two clamping sleeves 21, the crank connecting rod 18 can be rotated towards the front side, the two bent overlap rods 19 can slide into a wellhead to overlap with the inner wall of the wellhead when the crank connecting rod 18 rotates, at the moment, a rope ladder formed between the pull rope 9 and the pedal rod 10 can be placed into the wellhead from the upper part to the lower part through the supporting shaft 7, the crank connecting rod 18 supports the rope ladder formed between the pull rope 9 and the pedal rod 10, and further the front end of the crank connecting rod 18 can support the rope ladder formed between, the rope pulling device can prevent the rope pulling 9 from directly rubbing with the side wall of a well mouth to break the rope pulling, a rope ladder formed between the rope pulling 9 and the pedal rod 10 can vertically penetrate into the well mouth, so that workers can conveniently and safely go up and down in the well mouth, the left side and the right side of the front end of the crank connecting rod 18 are fixedly connected with the limiting rods 20, the two limiting rods 20 can limit the two rope pulling 9, the left end of the crank connecting rod 18 extends to the left side wall of the left side supporting block I17 and is fixedly connected with the bevel gear 22I, when the crank connecting rod 18 rotates forwards to the position right above the well mouth, the left end of the crank connecting rod 18 can drive the rotating shaft 24 to rotate through the meshing of the bevel gear 22 and the bevel gear 23, the front end of the rotating shaft 24 drives the large gear 26 to rotate, the large gear 26 can drive the small gear 29 to rotate through the chain 30, and further the, a bevel gear I22 is meshed with a bevel gear II 23, the bevel gear II 23 is fixedly connected to the rear end of a rotating shaft 24, the front side and the rear side of the rotating shaft 24 are fixedly connected with a supporting block II 25 through a bearing II, the two supporting block II 25 are respectively and fixedly connected to the front end and the rear end of the right side wall of a supporting frame I2, the front end of the rotating shaft 24 is fixedly connected with a gearwheel 26, the middle part of the rear side wall of a connecting plate 4 is fixedly connected with an L-shaped plate 27, the rear end of the L-shaped plate 27 and the opposite surface of the connecting plate 4 are fixedly connected with the front end and the rear end of a threaded rod 28 through a fixedly connected bearing V, the front end optical axis part of the threaded rod 28 is fixedly connected with a pinion 29, the pinion 29 is in transmission connection with the gearwheel 26 through a chain 30, a threaded cylinder 31 is in, when the threaded rod 28 rotates, the threaded cylinder 31 slides to the front side, the threaded cylinder 31 can drive the square clamping plate 35 to slide to the front side through the square sliding sleeve 34, at the moment, the square clamping plate 35 can be overlapped with the inner wall of the front side of a well mouth, the square clamping plate 35 can realize the overlapping of three supporting points and the side wall of the well mouth through the matching of the square clamping plate 35 and two bent overlapping rods 19 at the bottom side of the crank connecting rod 18, and further the device is stably fixed on the well mouth in an attempt, so that the device can not slide, and is more stable and safe in use, the left side wall of the threaded cylinder 31 is fixedly connected with the square sliding sleeve 34, the square clamping plate 35 is slidably connected in the square sliding sleeve 34, the square clamping plate 35 can slide up and down in the square sliding sleeve 34, when the device is not required to be fixed with the well mouth, the square clamping plate 35 can slide into, when the device needs to be fixed with the well head, can slide square fishplate bar 35 into the downside of square sliding sleeve 34, can make the lateral wall of square fishplate bar 35 and well head carry out the overlap joint, and then realize fixing between with the device and the well head.

The side is located the equal fixedly connected with stay cord 9 of opposite face of two plectanes 8 about on the back shaft 7, a plurality of foot pedal poles of fixedly connected with 10 between two stay cords 9, form a rope ladder between two stay cords 9 and a plurality of foot pedal poles 10, both make things convenient for workman's business turn over well head, can carry out the rolling to the rope ladder through back shaft 7 again, more conveniently use, and the length of foot pedal pole 10 is not less than 35cm, the length of foot pedal pole 10 is not less than 35cm can guarantee that workman's foot can trample stable, safety during the use more.

The notch 11 has been seted up on square frame 6's left side is located back plate 1, and the left end of back shaft 7 extends to fixedly connected with rotary disk 12 in the notch 11, through rotary disk 12 that sets up in notch 11, can drive back shaft 7 and rotate, and then realizes that back shaft 7 carries out the rolling to the rope ladder, more conveniently uses, and the left end of back shaft 7 passes through bearing two and the left side wall fixed connection of notch 11.

The right side of the square frame 6 is positioned on the rear plate 1 and is fixedly connected with a sliding sleeve 13, an inserting rod 14 is connected in the sliding sleeve 13 in a sliding mode, the left end of the inserting rod 14 is connected with a socket arranged on the left circular plate 8 in a clamping mode, the inserting rod 14 can enable the sliding sleeve 13 to slide left and right, the inserting rod 14 can be pushed to slide to the left side through a spring 16 arranged in the sliding mode to be connected with the socket arranged on the left circular plate 8 in a clamping mode, the position of the supporting shaft 7 can be fixed after the supporting shaft 7 finishes rolling two pull ropes 9, the right end of the inserting rod 14 is fixedly connected with a pull ring 15, the inserting rod 14 is sleeved with the spring 16, and the left end and the right end.

The diameter of the large gear 26 is 5 times of the diameter of the small gear 29, and the large gear 26 can drive the small gear 29 to rotate more quickly when rotating, so that the small gear 29 can drive the threaded rod 28 to rotate quickly.

The equal fixedly connected with link of opposite face upside of support frame one 2 and support frame two 3, and the cross section diameter of link not low with 1cm, the link can articulate with the safety rope that the workman tied up on one's body, the cross section diameter of link not low with 1cm can make its gravity that bears higher, make it fixed more firm to the safety rope that the workman tied up on one's body, safety during the use more.

The right side wall fixedly connected with T shape slider 32 of screw thread section of thick bamboo 31, T shape slider 32 and the T shape spout 33 sliding connection that L shaped plate 27 left side wall was seted up, T shape slider 32 and T shape spout 33's sliding connection can restrict the screw thread section of thick bamboo 31 rotatory, and then screw thread section of thick bamboo 31 removes above it when realizing threaded rod 28 rotation, the preceding lateral wall fixedly connected with nut 36 of square sliding sleeve 34, nut 36 female connection has screw rod 37, can fix the position of square joint board 35 in square sliding sleeve 34 through rotating screw rod 37.

The lower side of the square frame 6 is located on the front side wall of the bottom plate 1 and is fixedly connected with two clamping sleeves 21, the clamping sleeves 21 are matched with the crank connecting rod 18, the crank connecting rod 18 can be clamped with the clamping sleeves 21 when being lapped with the rear plate 1, and then the crank connecting rod 18 is fixed.

The diameter of the first bevel gear 22 is 3 times that of the second bevel gear 23, and the functions are as follows: the angle that the crank connecting rod 18 rotated is about ninety degrees, through setting up the diameter of bevel gear 22 to be greater than the diameter of bevel gear two 23, through the meshing of bevel gear 22 and bevel gear two 23 when crank connecting rod 18 rotated, can drive rotation axis 24 and rotate more circles, and then realize that threaded rod 28 rotates more circles.

The method comprises the following operation steps:

when the device is used, the device can be pushed to a wellhead by holding the first support frame 2 and the second support frame 3 by hand, the wellhead is positioned in the middle of the bottom side of the device, then the screw 37 is rotated to cancel the fixation of the rear end to the square clamping plate 35, the bottom end of the square clamping plate 35 slides downwards to the wellhead, then the screw 37 is rotated reversely to fix the square clamping plate 35 in the square sliding sleeve 34 by the rear end, then the crank connecting rod 18 can cancel the clamping with the two clamping sleeves 21, the crank connecting rod 18 is rotated to the front side, at the moment, the two bent overlap connecting rods 19 on the crank connecting rod 18 slide into the wellhead to overlap with the inner wall of the wellhead, when the crank connecting rod 18 is rotated to the right above the wellhead from the front side, the left end of the crank connecting rod 18 drives the rotating shaft 24 to rotate through the meshing of the first bevel gear 22 and the second bevel gear 23, and the front end of the rotating shaft 24 drives the big gear, the large gear 26 drives the small gear 29 to rotate through the chain 30, the small gear 29 rotates to drive the threaded rod 28 to rotate, the threaded rod 28 is connected with the threaded barrel 31 through threads, the right side of the threaded barrel 31 is connected with the T-shaped sliding chute 33 through the T-shaped sliding block 32 in a sliding manner, the threaded barrel 31 slides towards the front side, the threaded barrel 31 can drive the square clamping plate 35 to slide towards the front side through the square sliding sleeve 34, the square clamping plate 35 is overlapped with the inner wall of the front side of the wellhead at the moment, the square clamping plate 35 can be matched with the two bent overlapping rods 19 at the bottom side of the crank connecting rod 18 at the moment, overlapping of three supporting points and the side wall of the wellhead can be realized, the device is further fixed on the wellhead stably, at the moment, a worker can place a rope ladder formed between the pull rope 9 and the pedal rod 10 into the wellhead from the supporting shaft 7 and overlap two pull, make crank connecting rod 18 support the rope ladder that forms between stay cord 9 and the pedal pole 10, can avoid stay cord 9 direct and well head lateral wall to rub, can make the rope ladder vertically that forms between stay cord 9 and the pedal pole 10 go deep into the well head in, make things convenient for the workman to come in and go out the well head and overhaul the operation.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a water conservancy well head overhauls uses safety device, includes back plate (1), its characterized in that: the left side and the right side of the front side wall of the rear plate (1) are respectively fixedly connected with a first support frame (2) and a second support frame (3), the lower part of the front side of the opposite surface of the first support frame (2) and the second support frame (3) is fixedly connected with a same connecting plate (4), the front end and the rear end of the bottom side wall of the first support frame (2) and the second support frame (3) are respectively fixedly connected with a moving wheel (5), the upper side of the rear plate (1) is provided with a square frame (6), the left side wall and the right side wall of the square frame (6) are respectively fixedly connected with a first bearing and a left side and a right side of a support shaft (7), the support shaft (7) is fixedly connected with two circular plates (8), the two ends of the lower side of the front side wall of the rear plate (1) are respectively fixedly connected with a first support block (17), and the two support blocks (, the left side and the right side of the bottom of the front side of the crank connecting rod (18) are fixedly connected with bent lap joint rods (19), the left side and the right side of the front end of the crank connecting rod (18) are fixedly connected with limiting rods (20), the left end of the crank connecting rod (18) extends to the left side wall of a left side supporting block I (17) and is fixedly connected with a bevel gear I (22), the bevel gear I (22) is meshed with a bevel gear II (23), the bevel gear II (23) is fixedly connected to the rear end of a rotating shaft (24), the front side and the rear side of the rotating shaft (24) are fixedly connected with supporting blocks II (25) through bearings, the two supporting blocks II (25) are respectively and fixedly connected to the front end and the rear end of the right side wall of a supporting frame I (2), the front end of the rotating shaft (24) is fixedly connected with a large gear (26, the rear end of L shaped plate (27) and the opposite face of connecting plate (4) are all through the front and back end fixed connection of five bearing and threaded rod (28) of fixed connection, the partial fixedly connected with pinion (29) of front end optical axis of threaded rod (28), pinion (29) are connected with gear wheel (26) transmission through chain (30), threaded connection has threaded cylinder (31) on threaded rod (28), the square sliding sleeve (34) of left side wall fixedly connected with of threaded cylinder (31), sliding connection has square joint board (35) in square sliding sleeve (34).

2. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the left side and the right side of the supporting shaft (7) are positioned on two opposite surfaces of the circular plates (8) and are fixedly connected with pull ropes (9), a plurality of pedal rods (10) are fixedly connected between the pull ropes (9), and the length of each pedal rod (10) is not less than 35 cm.

3. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the left side of square frame (6) is located back plate (1) and has seted up notch (11), and the left end of back shaft (7) extends to fixedly connected with rotary disk (12) in notch (11), and the left end of back shaft (7) passes through bearing two and the left side wall fixed connection of notch (11).

4. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the right side of square frame (6) is located fixedly connected with sliding sleeve (13) on back plate (1), sliding sleeve (13) sliding connection has inserted bar (14), and the socket joint of seting up on the left end of inserted bar (14) and left side plectane (8), the right-hand member fixedly connected with pull ring (15) of inserted bar (14), the cover is equipped with spring (16) on inserted bar (14), and spring (16) about both ends respectively with sliding sleeve (13) and pull ring (15) fixed connection.

5. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the diameter of the large gear (26) is 5 times of that of the small gear (29).

6. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the upper sides of the opposite surfaces of the first support frame (2) and the second support frame (3) are fixedly connected with hanging rings, and the diameters of the cross sections of the hanging rings are not as low as 1 cm.

7. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the right side wall fixedly connected with T shape slider (32) of screw thread section of thick bamboo (31), T shape spout (33) sliding connection that T shape slider (32) and L shaped plate (27) left side wall were seted up, the preceding lateral wall fixedly connected with nut (36) of square sliding sleeve (34), nut (36) internal thread connection has screw rod (37).

8. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the lower side of the square frame (6) is located on the front side wall of the bottom plate (1) and is fixedly connected with two clamping sleeves (21), and the clamping sleeves (21) are matched with the crank connecting rods (18).

9. The water conservancy wellhead safety device that overhauls of claim 1, its characterized in that: the diameter of the bevel gear I (22) is 3 times of that of the bevel gear II (23).