CN107298395A - Combination cantilevered hoisting apparatus easy to assemble - Google Patents

Abstract

The easy-to-assemble and disassemble combined cantilever lifting device includes a support frame in the shape of a cuboid set on the right side of the bridge deck of the viaduct. The top of the upper horizontal frame is provided with a hoist along the left and right horizontal directions through several U-shaped hoops and bolt assemblies. Arm, the front side of the top of the upper horizontal frame is provided with a winch; the supporting frame is provided with an exhaust fan, cylinder, compressed air storage tank, exhaust motor and suction cup; the right side of the upper horizontal frame is provided with a vertical Frame, the left side of the vertical frame is provided with a right limit wheel that moves horizontally along the bridge deck guardrail base. Each spare part of the present invention adopts the structure of split assembly, which can be assembled as needed, has a certain lifting capacity, has good fixing reliability on the bridge deck of the viaduct, and can move along the bridge deck, and is convenient and quick to install, especially for In order to facilitate handling and storage, the boom often needs to be disassembled after use, which is not only safe and reliable, but also quite convenient and quick.

Description

Easy to disassemble combined cantilever lifting device

technical field

The invention belongs to the technical field of road and bridge construction, and in particular relates to an easily disassembled and assembled cantilever type lifting device.

Background technique

There are more and more viaducts in today's traffic roads, because viaducts are generally above ordinary ground roads, avoiding some intersections, etc., which can improve the smoothness of the road. To pave asphalt pavement on the upper surface of the viaduct and carry out construction such as wiring and plastering on the bottom surface, it is quite inconvenient to transport construction equipment and construction materials between the bridge deck and under the bridge. The current method is that workers push and carry Carts with construction equipment and construction materials are transported from the upper bridge crossing or the lower bridge crossing, ranging from a few hundred meters to a few kilometers, and going up and down slopes. The labor intensity of workers is high, and it also affects work efficiency. improve.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides an easy-to-disassemble combined cantilever lifting device that can reduce the labor intensity of workers, improve work efficiency, and has high safety and reliability.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: the easy-to-disassemble combined cantilever lifting device includes a support frame that is generally in the shape of a cuboid arranged on the right side of the bridge deck of the viaduct, and the support frame includes a lower horizontal frame. The bottom of the frame is provided with support wheels, the lower horizontal frame is vertically provided with uprights, the upper end of the uprights is fixedly provided with an upper horizontal frame, and the top of the upper horizontal frame is provided with a boom along the left and right horizontal directions through several U-shaped hoops and bolt assemblies. The right side of the arm is a cantilever structure, and each supporting beam is provided with a manual positioning mechanism for fixing the boom. A mounting plate is installed horizontally on the front side of the top of the upper horizontal frame, and a hoist is installed on the mounting plate. A pulley frame, the first fixed pulley is connected to the first pulley shaft through the first pulley shaft arranged horizontally, the rear side of the boom is fixedly provided with a wire rope locking piece adjacent to the first fixed pulley, and the front side of the boom A second pulley frame is fixedly arranged above the upper horizontal frame, and a second fixed pulley is connected to the second pulley frame through the rotation of the second pulley shaft arranged vertically. The top of the upper horizontal frame is provided with a stand on the rear side of the boom. A wire rope is wound on the winch, and the pulling end of the wire rope passes through the second fixed pulley, the first fixed pulley and the wire rope locking piece in turn, and is fixed on the stand by a U-shaped card, and the wire rope is locked on the first fixed pulley and the wire rope. There is a hook assembly for hanging heavy objects between the parts;

The lower horizontal frame is provided with an exhaust fan, a cylinder, a compressed air tank, an exhaust motor and a suction cup. The main shaft of the exhaust motor is connected to the main shaft of the exhaust fan. The cylinder is arranged vertically. The suction cup is located below the lower horizontal frame and the opening Set downwards, the lower end of the cylinder is connected to the top of the suction cup through the connecting plate, the edge of the lower port of the suction cup is provided with a wear-resistant rubber ring, the center of the top of the suction cup is connected to the air outlet of the exhaust fan, and the air outlet of the exhaust fan is connected to a three-way pipe. The first air outlet pipe of the three-way pipe is provided with a first air valve and a gas booster valve. The air outlet of the first air outlet pipe is connected to the compressed air storage tank, and the compressed air storage tank and the cylinder pass through the air pipe and the air cylinder. The air valve assembly is connected, and the second air valve is arranged on the second air outlet pipe of the three-way pipe;

The bottom right side of the upper horizontal frame is provided with a vertical frame located on the right side of the bridge deck guardrail base along the vertical direction. A reinforcing rib is set between the left side of the upper part of the vertical frame and the right side of the bottom right side of the upper horizontal frame. On the wheel frame, the right wheel frame is provided with a right limiting wheel which contacts the right side of the bridge deck guardrail base and moves horizontally along the bridge deck guardrail base.

On the first pulley frame, a first positioning pin positioned above the first fixed pulley and used to prevent the rope from coming off is pierced.

The hook assembly includes a movable pulley, a third pulley frame and a hook. The movable pulley is connected to the third pulley frame through the rotation of the third pulley shaft, and the lower part of the third pulley frame is provided with two second positioners located below the movable pulley for preventing the rope from falling off. Pin, the bottom of the third pulley frame is fixedly arranged with a flat plate along the horizontal direction, the middle of the flat plate is provided with a round hole, the upper part of the hook is inserted into and rotated to be connected in the round hole, and the upper end of the hook is fixedly arranged with a limit block on the top of the flat plate. Bit blocks are larger than round holes.

The wire rope locking piece includes a U-shaped plate, a wedge-shaped plate, the third positioning pin and the fourth positioning pin. The top, bottom and left side of the U-shaped plate are open, and the upper front side of the U-shaped plate is fixedly connected to the rear side of the boom. , the third locating pin is located above the fourth locating pin, both the third locating pin and the fourth locating pin pass through the U-shaped plate horizontally along the front-to-back direction, and the distance between the third locating pin and the bottom of the U-shaped plate is greater than the distance U of the fourth locating pin The distance between the bottom of the profile plate, the wedge plate has a structure with a wide top and a narrow bottom. The wedge plate extends into the U-shaped plate and the left side of the wedge plate is in contact with the third positioning pin and the fourth positioning pin. The wire rope runs along the U-shaped plate. The inner bottom passes through the U-shaped plate from bottom to top, and the rear side of the wedge-shaped plate is in pressure contact with the bottom of the U-shaped plate through the steel wire rope. .

The right side of the lower part of the lower horizontal frame is provided with a left wheel frame, and the left wheel frame is rotatably connected with a left limit wheel that is in pressure contact with the left side of the bridge deck guardrail base and moves along the inner side of the bridge deck guardrail base;

A supporting wheel on the left side of the bottom of the lower horizontal frame is coaxially provided with a driven sprocket, the lower horizontal frame is provided with a motor reducer, and the power output shaft of the motor reducer is provided with a driving sprocket, and the driving sprocket and the driven sprocket The sprockets are connected by a chain drive.

The right side of the vertical frame is provided with a lower ear plate, the bottom of the right side of the boom is provided with an upper ear plate, and between the lower ear plate and the upper ear plate is arranged a diagonal brace with a low left and a high right.

The diagonal bracing rod includes lower casing, upper casing and stud. The lower end of the lower casing is hinged with the lower ear plate through the lower pin shaft, and the upper end of the upper casing is hinged with the upper ear plate through the upper pin shaft. The middle part of the stud is fixed with six Prismatic chuck, the thread direction of the part of the stud above the hexagonal prism chuck is opposite to that of the part below the hexagonal prism chuck, the upper part of the stud extends into and is threaded in the upper casing, and the lower part of the stud It is inserted into and threaded into the lower casing. The upper back tightening nut and the lower back tightening nut are threaded on the stud. Press fit on top.

On the right side of the top of the upper horizontal frame, there are two uprights respectively located at the front and rear of the boom, between the upper parts of the two uprights there is a left connecting plate above the boom, and the left sides of the two uprights respectively pass through the left stiffener plate It is connected with the top of the upper horizontal frame, and the top of the right side of the boom is fixedly provided with a right rib plate along the vertical direction, and the right side of the right rib plate is fixedly connected with the left side of the first pulley frame, and the left edge of the right rib plate is fixedly connected with a The right connecting plate parallel to and in contact with the left connecting plate is connected by fastening bolts between the left connecting plate and the right connecting plate.

By adopting the above technical scheme, when the present invention is in use, since the bridge deck is very smooth after pouring concrete, the compressed air storage tank provides power for the cylinder, and the cylinder drives the suction cup to press onto the bridge deck, so that the support frame can be stabilized. It is firmly fixed on the bridge surface, so as to avoid the heavy weight lifted by the hook at the right end of the boom, which will cause the supporting frame to tilt up and affect the safe construction. The boom right side stretches to the right side of the viaduct, if the present invention is arranged on the left side of the viaduct bridge deck, the corresponding adjustment of the direction gets final product. The boom can be made of square steel pipes. The square steel pipes prevent rotation. The hooks are attached to heavy objects (construction equipment or construction materials), and the hoist can be used to transport the heavy objects down from the viaduct or hoist the heavy objects from the ground to the On the viaduct. During the upward transport of heavy objects, when the heavy objects are almost level with the bridge deck of the viaduct, the workers on the viaduct hold a long pole with a hook at one end to hook the hook and pull to the left, and then pull the heavy objects above the bridge deck of the viaduct. Several workers can remove the heavy objects from the hooks. At the beginning of the downward transport of heavy objects, the heavy objects on the bridge surface are first hung on the hook, and the long rod with a pull hook is used to hook the hook. Control the hoist to slowly drop the heavy object, and the long pole slowly moves the hook to the left to a stable state. In this process, use the long pole with the hook to stabilize the heavy object and slowly fall to avoid the heavy object from shaking violently. The large impact of the arm will affect the safe operation.

After a period of time, the air pressure in the suction cup will rise, start the exhaust motor, close the first air valve, open the second air valve, and the exhaust fan will pump air into the suction cup, thereby increasing the suction force of the suction cup and ensuring the safety of construction .

When the hoisting of heavy objects on a certain place on the bridge deck is completed and the location of the hoisting heavy objects needs to be moved, the cylinder will lift the suction cup upwards, the motor reducer will start, and the driving support wheels will move on the bridge deck, and the limit wheels will also move along the bridge deck guardrail. After the left side of the base moves in place, the motor reducer stops, and the cylinder presses the sucker onto the bridge deck to locate the present invention.

In the process of hoisting heavy objects, the left limit wheel and the right limit wheel also play a strong supporting role to prevent the support frame from tilting to the right. The gravity of each equipment on the lower horizontal frame also plays the role of balancing the boom cantilever hoisting operation.

When the air pressure in the compressed air storage tank is not enough, the driving performance of the cylinder will be weakened, and the suction cup will not be firmly adsorbed to the bridge surface. At this time, it is necessary to close the second air pipe, open the first air valve, and the exhaust fan passes through the air. The booster valve stores air in the compressed air storage tank.

In the present invention, one end of the steel wire rope is pulled by a hoist, the other end of the steel wire rope passes through the U-shaped plate, and one end of the steel wire rope passing through the U-shaped plate is clamped on the stand with a U-shaped card to prevent the steel wire rope from loosening and achieve the ultimate goal. The role of insurance, then insert and install the third positioning pin and the fourth positioning pin on the U-shaped plate, insert the wedge-shaped plate into the U-shaped plate from top to bottom, use a hammer to hit the upper end of the wedge-shaped plate downward, and the left side of the wedge-shaped plate Both are in pressure contact with the third positioning pin and the fourth positioning pin, and the rear side of the wedge plate is in pressure contact with the bottom of the U-shaped plate through the steel wire rope. Because the rear side of the wedge-shaped plate and the inwall of the U-shaped plate are all provided with the anti-skid friction pattern that the steel wire rope is tightly crimped, the steel wire rope is stressed and pulls the wedge-shaped plate downward, so that the steel wire rope can be locked firmly.

The boom in the present invention can be adjusted in length according to the actual position. During adjustment, the U-shaped hoop and the bolt assembly can be removed to loosen the boom, and then move the boom along the left and right directions. After the moving length of the boom is in place, install the U-shaped hoop and bolt assembly to lock the boom.

In order to increase the strength of the boom, that is, the lifting capacity, two square steel pipes can be welded side by side as a whole. Of course, it is necessary to set the distance between the two vertical poles in advance to place the two square steel pipes.

In order to enhance the strength of the boom, two uprights are specially set up, the uprights are fixedly connected to the top of the upper horizontal frame through the left stiffener plate, and the left connecting plate between the two uprights is fixedly connected to the top of the boom through the right stiffener plate. In addition, the right side of the right rib plate is also fixedly connected to the left side of the first pulley frame, which can enhance the strength of the first pulley frame connected to the right end of the boom.

In order to further enhance the strength of the cantilever state on the right side of the boom, an adjustable length diagonal brace is set between the right side of the vertical frame and the bottom of the right side of the boom, so that Length, so that the diagonal brace fully supports the boom so that the cantilever structure on the right side of the boom maintains good stability. The adjustment process of the diagonal brace is as follows: first use a wrench to loosen the upper back tightening nut and the lower back tightening nut, and then use a wrench to clamp the hexagonal prism chuck to rotate the stud, because the upper and lower parts of the stud have opposite threads , when the stud rotates, the upper casing and the lower casing threaded with the stud will move in opposite directions at the same time, until the screwing of the stud is difficult, the diagonal strut will play a supporting role, indicating that the adjustment is in place, and then Use a wrench to tighten the upper and lower backnuts.

The boom is fixed on the top of the support frame through U-shaped hoops and bolt assemblies, and the left connecting plate and the right connecting plate are connected by fastening bolts, which is convenient for manufacturing and assembling the boom, and is convenient for disassembly and maintenance, and replacement of different booms .

To sum up, the present invention has reasonable design, simple structure, and each spare parts adopts the structure of separate assembly, which can be assembled as needed, has a certain lifting capacity, and has good fixing reliability on the bridge surface of the viaduct, and can be installed along the bridge. It is convenient and quick to install, especially for the boom, in order to facilitate handling and storage, it often needs to be disassembled after use, and the disassembly is also quite convenient and quick. In a word, the present invention fully reduces the labor intensity of workers in road construction, improves work efficiency, and is safer and more reliable.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a top view of the boom in Fig. 1;

Fig. 3 is an enlarged view of place A in Fig. 1;

Fig. 4 is an enlarged view at B in Fig. 2 .

detailed description

As shown in Figures 1-4, the easy-to-disassemble combined cantilever lifting device of the present invention includes a support frame that is generally in the shape of a cuboid on the right side of the bridge deck of the viaduct 68, and the support frame includes a lower horizontal frame 47. The bottom of the horizontal frame 47 is provided with a support wheel 2, and the lower horizontal frame 47 is vertically provided with a column 48. The upper end of the column 48 is fixedly provided with an upper horizontal frame 53, and the top of the upper horizontal frame 53 passes through several U-shaped hoops and bolt assemblies 5 along the left and right sides. A boom 4 is arranged in the horizontal direction, and the right side of the boom 4 is a cantilever structure. Each supporting beam 3 is provided with a manual positioning mechanism 5 for fixing the boom 4. The front side of the upper horizontal frame 53 is horizontally arranged with a Mounting plate 6, hoisting machine 7 is arranged on the mounting plate 6, the first pulley frame 8 is fixedly arranged on the right end of the boom 4, and the first fixed pulley 9 is connected to the first pulley shaft through the horizontally arranged first pulley shaft on the first pulley frame 8. The rear side of the arm 4 is fixedly provided with a wire rope locking member 10 adjacent to the first fixed pulley 9, and the front side of the boom 4 is fixedly provided with a second pulley frame 11 above the upper horizontal frame 53, on which the second pulley frame 11 passes A second fixed pulley 12 is rotatably connected to the second pulley shaft arranged vertically. A stand 13 is arranged on the top of the upper horizontal frame 53 at the rear side of the boom 4. A wire rope 14 is wound on the winch 7. The pulling ends of the wire rope 14 are in turn After passing through the second fixed pulley 12, the first fixed pulley 9 and the wire rope 14 locking piece 10, it is fixed on the stand 13 by a U-shaped card 15, and the wire rope 14 is placed between the first fixed pulley 9 and the wire rope 14 locking piece 10. A hook assembly for hanging heavy objects is arranged between;

The lower horizontal frame 47 is provided with an exhaust fan 50, a cylinder 51, a compressed air storage tank 52, an exhaust motor 54 and a suction cup 55, the main shaft of the exhaust motor 54 is connected with the main shaft transmission of the exhaust fan 50, and the cylinder 51 is arranged in a vertical direction, and the suction cup 55 is located below the lower horizontal frame 47 and the opening of the suction cup 55 is set downwards. The lower end of the cylinder 51 is connected to the top of the suction cup 55 through the connection plate 56. The edge of the lower port of the suction cup 55 is provided with a wear-resistant rubber ring. The exhaust port of the exhaust fan 50 is connected, and the air outlet of the exhaust fan 50 is connected with a three-way pipe 57. The first air outlet pipe of the three-way pipe 57 is provided with a first air valve 58 and a gas booster valve 59. The air outlet of the air pipe is connected to the compressed air storage tank 52, the compressed air storage tank 52 is connected to the cylinder 51 through the air pipe and the air valve assembly, and the second air outlet pipe of the three-way pipe 57 is provided with a second air valve 60 .

The bottom right side of the upper horizontal frame 53 is provided with a vertical frame 34 positioned at the right side of the bridge deck guardrail base 62 along the vertical direction, and a reinforcing rib 35 is arranged between the left side of the vertical frame 34 top and the right side of the bottom of the upper horizontal frame 53, and the vertical frame 34 left side bottom is provided with right wheel frame 36, and right wheel frame 36 is provided with the right limit wheel 37 that contacts with bridge deck guardrail base 62 right sides and moves horizontally along bridge deck guardrail base 62.

The first positioning pin 16 which is positioned above the first fixed pulley 9 and is used to prevent the rope from coming off is pierced on the first pulley frame 8 .

The hook assembly includes a movable pulley 17, a third pulley frame 18 and a suspension hook 19. The movable pulley 17 is rotatably connected to the third pulley frame 18 through the third pulley shaft. The bottom of the third pulley frame 18 is provided with two The second positioning pin 20 of anti-off rope, the bottom of the third pulley frame 18 is fixedly provided with a flat plate 21 along the horizontal direction, the middle part of the flat plate 21 is provided with a circular hole, the top of the suspension hook 19 is stretched into and rotated in the circular hole, the suspension hook 19 The upper end is fixedly provided with a limiting block 22 above the plate 21, and the limiting block 22 is larger than the round hole.

The wire rope 14 locking part 10 comprises a U-shaped plate 23, a wedge-shaped plate 24, a third positioning pin 25 and a fourth positioning pin 26, the top, bottom and left side of the U-shaped plate 23 are open, and the front side of the U-shaped plate 23 The upper part is fixedly connected with the rear side of the boom 4, the third positioning pin 25 is located above the fourth positioning pin 26, the third positioning pin 25 and the fourth positioning pin 26 pass through the U-shaped plate 23 horizontally along the front and rear direction, the third positioning pin The distance between 25 and the bottom of the U-shaped plate 23 is greater than the distance between the fourth positioning pin 26 and the bottom of the U-shaped plate 23. The wedge-shaped plate 24 is a structure that is wide at the top and narrow at the bottom. The wedge-shaped plate 24 stretches into the U-shaped plate 23 and the wedge-shaped plate 24 The left side is in pressure contact with the third positioning pin 25 and the fourth positioning pin 26, and the steel wire rope 14 passes through the U-shaped plate 23 from bottom to top along the inner bottom of the U-shaped plate 23, and the rear side of the wedge-shaped plate 24 passes through the steel wire rope 14 and the U-shaped plate. The bottom of the molded plate 23 is press-contacted, and the back side of the wedge-shaped plate 24 and the inner wall of the U-shaped plate 23 are all provided with anti-skid friction lines that the steel wire rope 14 is tightly crimped.

The right side of the lower horizontal frame 47 bottom is provided with a left wheel frame 61, and the left wheel frame 61 is rotatably connected with a left limiter wheel 63 which presses against the left side of the bridge deck guardrail base 62 and moves along the inner surface of the bridge deck guardrail base 62 ;

A supporting wheel 2 on the left side of the bottom of the lower horizontal frame 47 is coaxially provided with a driven sprocket 64, the lower horizontal frame 47 is provided with a motor reducer 65, and the power output shaft of the motor reducer 65 is provided with a driving sprocket 66 , the driving sprocket 66 is connected to the driven sprocket 64 through a chain 67 in transmission.

The right side of the vertical frame 34 is provided with a lower lug 38 , the bottom of the right side of the boom is provided with an upper lug 39 , and between the lower lug 38 and the upper lug 39 is provided with a slanting strut with a low left and a high right.

The diagonal brace comprises a lower sleeve 40, an upper sleeve 41 and a stud 42, the lower end of the lower sleeve 40 is hinged with the lower ear plate 38 through the lower pin, and the upper end of the upper sleeve 41 is hinged with the upper ear plate 39 through the upper pin, The middle part of the stud 42 is fixedly provided with a hexagonal prism chuck 43, and the screw thread direction of the part above the hexagonal prism chuck 43 of the stud 42 is opposite to that of the part below the hexagonal prism chuck 43, and the upper part of the stud 42 extends Inserted and threaded in the upper casing 41, the bottom of the stud 42 is inserted and threaded in the lower casing 40, the upper back tightening nut 44 and the lower back tightening nut 45 are threaded on the stud 42, the upper back tightening nut 44 upper end faces press fit with upper casing 41 lower ends, and the lower end faces of lower back tightening nuts 45 press fit with lower sleeve pipe 40 upper ends.

The top right side of the upper horizontal frame 53 is provided with two uprights 46 respectively positioned at the front side and the rear side of the boom 4, and a left connecting plate positioned at the top of the boom 4 is arranged between the tops of the two uprights 46, and the left side of the two uprights 46 is The left stiffener plate 27 is connected to the top of the upper horizontal frame 53 respectively, and the top of the right side of the boom 4 is fixedly provided with a right stiffener plate 28 along the vertical direction, and the right side of the right stiffener plate 28 is fixed to the left side of the first pulley frame 8 Connection, the left edge of the right stiffener plate 28 is fixedly connected with the right connecting plate 29 parallel to and in contact with the left connecting plate, and the left connecting plate and the right connecting plate 29 are connected by fastening bolts 30 .

When the present invention is in use, since the bridge deck is very smooth after pouring concrete, the compressed air storage tank 52 provides power for the cylinder 51, and the cylinder 51 drives the suction cup 55 to press onto the bridge deck, so that the support frame can be stabilized Ground is fixed on the bridge deck, thereby avoids the gravity of the weight that the suspension hook 19 of boom 4 right-hand ends is hoisted is too big and makes support frame warp and influences safe construction. Boom 4 right side stretches to the right side of viaduct 68, if the present invention is arranged on the left side of viaduct 68 bridge decks, direction corresponding adjustment gets final product. Boom 4 can adopt square steel pipe to make, and square steel pipe avoids rotating, and suspension hook 19 is articulated heavy object (construction equipment or construction raw material), and control winch 7 just can carry heavy object downwards from viaduct 68 or heavy object It is hoisted on the viaduct 68 from the ground. During the upward transportation of the heavy object, when the heavy object is almost equal to the bridge deck of the viaduct 68, the worker on the viaduct 68 holds a long pole with a pull hook at one end to hook the hook 19 and pull it to the left to pull the heavy object to the bridge of the viaduct 68. After above the surface, several workmen will take off heavy object from suspension hook 19 and get final product. When the weight is transported downwards, the weight on the bridge deck is first hung on the hook 19, and the hook 19 is hooked with a long rod with a pull hook, and the hoist 7 is first manipulated to lift the weight upwards so that the weight leaves the bridge deck. Finally, the hoist 7 is controlled to slowly drop the weight, and the long pole slowly moves the hook 19 to the left to a stable state. Objects produce larger impact on the boom 4 and affect the safe operation.

After a period of time, the air pressure in the suction cup 55 will rise, start the suction motor 54, close the first damper 58, open the second damper 60, and the suction fan 50 will suck air in the suction cup 55, so that the adsorption force of the suction cup 55 Enhanced to ensure the safety of construction.

After the hoisting of the heavy object in a place on the bridge deck is completed, when the place of the hoisting weight needs to be moved, the cylinder 51 lifts the suction cup 55 upwards, the motor reducer 65 starts, and the driving support wheel 2 moves on the bridge deck, and the limit wheel 63 Also along the left side of the bridge deck guardrail base 62, after moving in place, the motor speed reducer 65 stops, and the cylinder 51 presses the suction cup 55 to the bridge deck again to locate the present invention.

During the operation process of hoisting heavy objects, the left spacer wheel 63 and the right spacer wheel 37 also play a stronger supporting role, preventing the support frame from tilting to the right. The gravity of each equipment self on the lower horizontal frame 47 also plays the effect of balance boom 4 cantilever hoisting operation.

When the air pressure in the compressed air storage tank 52 is not enough, the driving performance of the cylinder 51 is weakened, and the suction cup 55 cannot be firmly adsorbed on the bridge surface. At this time, it is necessary to close the second air pipe and open the first air valve 58. The blower 50 stores gas in the compressed air storage tank 52 through the gas booster valve 59 .

In the present invention, one end of the steel wire rope 14 is pulled by the winch 7, the other end of the steel wire rope 14 passes through the U-shaped plate 23, and one end of the steel wire rope 14 passing through the U-shaped plate 23 is stuck on the stand 13 with a U-shaped clamp 15 , prevent the wire rope 14 from loosening, and play the role of ultimate insurance, then insert and install the third positioning pin 25 and the fourth positioning pin 26 on the U-shaped plate 23, and the wedge-shaped plate 24 is inserted into the U-shaped plate 23 from top to bottom, Use a hammer to smash the upper end of the wedge-shaped plate 24 downward, the left side of the wedge-shaped plate 24 is pressed against the third positioning pin 25 and the fourth positioning pin 26, and the rear side of the wedge-shaped plate 24 is pressed against the bottom of the U-shaped plate 23 through the steel wire rope 14 touch. Because the rear side of wedge-shaped plate 24 and the inwall of U-shaped plate 23 are all provided with the anti-slip friction pattern that steel rope 14 is tightly crimped, steel rope 14 is stressed and pulls wedge-shaped plate 24 downwards, and steel rope 14 can be locked firmly like this.

Boom 4 among the present invention can carry out the regulation of length according to actual position, can take off U-shaped hoop and bolt assembly 5 during adjustment, makes boom 4 unclamp, then moves boom 4 along left-right direction. After the moving length of boom 4 is in place, U-shaped hoop and bolt assembly 5 are installed to lock boom 4 again.

In addition, in order to increase the strength of the boom 4, that is, the lifting capacity, two square steel pipes can be welded side by side as a whole. Of course, it is necessary to set the distance between the two vertical poles 46 in advance so as to place the two square steel pipes.

In order to enhance the strength of the boom 4, two vertical rods 46 are specially arranged, and the vertical rod 46 is fixedly connected with the top of the upper horizontal frame 53 through the left stiffener plate 27, and the left connecting plate between the two vertical rods 46 is connected with the right stiffener plate 28. The top of the boom 4 is fixedly connected. In addition, the right side of the right stiffener plate 28 is also fixedly connected to the left side of the first pulley frame 8, so that the strength of the first pulley frame connected to the right end of the boom 4 can be enhanced.

In order to further enhance the strength of the cantilever state on the right side of the boom 4, a length-adjustable diagonal brace is set between the right side of the vertical frame 34 and the bottom of the right side of the boom 4, so that the boom 4 can be easily disassembled, and the The length of the diagonal brace makes the diagonal brace fully support the boom 4 so that the cantilever structure on the right side of the boom 4 maintains good stability. The adjustment process of the diagonal brace is as follows: first use a wrench to loosen the upper back tightening nut 44 and the lower back tightening nut 45, and then use a wrench to respectively clamp the hexagonal prism chuck 43 to rotate the stud 42, because the upper and lower parts of the stud 42 The helical direction of the thread is opposite. When the stud 42 rotates, the upper sleeve 41 and the lower sleeve 40 threaded with the stud 42 will move in the opposite direction at the same time, until the screwing of the stud 42 is difficult, and the diagonal strut It has a supporting effect, indicating that the adjustment is in place, and then use a wrench to tighten the upper back tightening nut 44 and the lower back tightening nut 45.

The boom 4 is fixed on the top of the support frame through a U-shaped hoop and a bolt assembly, and the left connecting plate and the right connecting plate 29 are connected by fastening bolts 30, which is convenient for manufacturing and assembling the boom 4, and is convenient for disassembly, maintenance, and replacement Different booms4.

This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present invention. All simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the protection of the technical solution of the present invention. scope.

Claims (8)

1. The easy-to-assemble and disassemble combined cantilever lifting device is characterized in that: it includes a support frame that is arranged on the right side of the bridge deck of the viaduct and is in the shape of a cuboid as a whole. The support frame includes a lower horizontal frame, and the bottom of the lower horizontal frame is provided with support wheels. A column is vertically arranged on the lower horizontal frame, and an upper horizontal frame is fixedly installed on the upper end of the column. On the top of the upper horizontal frame, a boom is arranged along the left and right horizontal directions through several U-shaped hoops and bolt assemblies, and the right side of the boom is a cantilever structure. Each support beam is provided with a manual positioning mechanism for fixing the boom. A mounting plate is horizontally provided on the front side of the top of the upper horizontal frame. A hoist is provided on the mounting board. The first fixed pulley is rotatably connected to the frame through the first pulley shaft arranged horizontally, the rear side of the boom is fixedly provided with a wire rope locking piece adjacent to the first fixed pulley, and the front side of the boom is fixed above the upper horizontal frame There is a second pulley frame, on which the second fixed pulley is connected through the rotation of the second pulley shaft arranged vertically, the top of the upper horizontal frame is provided with a stand on the rear side of the boom, and a wire rope is wound on the winch, and the wire rope The pulling end of the pulley passes through the second fixed pulley, the first fixed pulley and the wire rope locking piece in turn, and is fixed on the stand through a U-shaped card. The wire rope is provided between the first fixed pulley and the wire rope locking piece. Hook assembly for hanging heavy objects; The lower horizontal frame is provided with an exhaust fan, a cylinder, a compressed air tank, an exhaust motor and a suction cup. The main shaft of the exhaust motor is connected to the main shaft of the exhaust fan. The cylinder is arranged vertically. The suction cup is located below the lower horizontal frame and the opening Set downwards, the lower end of the cylinder is connected to the top of the suction cup through the connecting plate, the edge of the lower port of the suction cup is provided with a wear-resistant rubber ring, the center of the top of the suction cup is connected to the air outlet of the exhaust fan, and the air outlet of the exhaust fan is connected to a three-way pipe. The first air outlet pipe of the three-way pipe is provided with a first air valve and a gas booster valve. The air outlet of the first air outlet pipe is connected to the compressed air storage tank, and the compressed air storage tank and the cylinder pass through the air pipe and the air cylinder. The air valve assembly is connected, and the second air valve is arranged on the second air outlet pipe of the three-way pipe; The bottom right side of the upper horizontal frame is provided with a vertical frame located on the right side of the bridge deck guardrail base along the vertical direction. A reinforcing rib is set between the left side of the upper part of the vertical frame and the right side of the bottom right side of the upper horizontal frame. On the wheel frame, the right wheel frame is provided with a right limiting wheel which contacts the right side of the bridge deck guardrail base and moves horizontally along the bridge deck guardrail base. 2. The easily disassembled combined cantilever lifting device according to claim 1, characterized in that: the first pulley frame is pierced with a first positioning pin located above the first fixed pulley for preventing the rope from coming off. 3. The easy-to-disassemble combined cantilever lifting device according to claim 1, wherein the hook assembly includes a movable pulley, a third pulley frame and a suspension hook, and the movable pulley is rotatably connected to the third pulley frame through the third pulley shaft On the lower part of the third pulley frame, there are two second positioning pins located under the movable pulley for preventing the rope from falling off. The bottom of the third pulley frame is fixed with a flat plate along the horizontal direction. And it is rotatably connected in the circular hole, and the upper end of the hook is fixedly provided with a limit block positioned above the flat plate, and the limit block is larger than the circular hole. 4. The easy-to-disassemble combined cantilever lifting device according to claim 1, characterized in that: the wire rope locking member includes a U-shaped plate, a wedge-shaped plate, a third positioning pin and a fourth positioning pin, and the top of the U-shaped plate , the bottom and the left side are both open, the upper front side of the U-shaped plate is fixedly connected to the rear side of the boom, the third positioning pin is located above the fourth positioning pin, and the third positioning pin and the fourth positioning pin are horizontally worn along the front and rear directions. Passing through the U-shaped plate, the distance between the third positioning pin and the bottom of the U-shaped plate is greater than the distance between the fourth positioning pin and the bottom of the U-shaped plate. The wedge-shaped plate has a structure with a wide top and a narrow bottom. The left side of the plate is in pressure contact with the third positioning pin and the fourth positioning pin, the steel wire rope passes through the U-shaped plate from bottom to top along the inner bottom of the U-shaped plate, and the rear side of the wedge-shaped plate is in pressure contact with the bottom of the U-shaped plate through the steel wire rope , The rear side of the wedge plate and the inner wall of the U-shaped plate are provided with anti-slip friction lines tightly crimped by the steel wire rope. 5. The easy-to-disassemble combined cantilever lifting device according to claim 1, characterized in that: a left wheel frame is arranged on the right side of the lower part of the lower horizontal frame, and the left wheel frame is rotatably connected with the left side top of the bridge deck guardrail base. The left limiting wheel that presses into contact and moves along the inner side of the bridge deck guardrail base; A supporting wheel on the left side of the bottom of the lower horizontal frame is coaxially provided with a driven sprocket, the lower horizontal frame is provided with a motor reducer, and the power output shaft of the motor reducer is provided with a driving sprocket, and the driving sprocket and the driven sprocket The sprockets are connected by a chain drive. 6. The easily disassembled combined cantilever lifting device according to claim 1, characterized in that: the right side of the vertical frame is provided with a lower ear plate, the bottom of the right side of the boom is provided with an upper ear plate, the lower ear plate and the upper ear plate Diagonal struts with low left and right high slopes are arranged between the ear plates. 7. The easy-to-assemble and disassemble combined cantilever lifting device according to claim 6, characterized in that: the diagonal brace includes a lower casing, an upper casing and a stud, and the lower end of the lower casing passes through the lower pin shaft and the lower ear plate Hinged, the upper end of the upper casing is hinged with the upper ear plate through the upper pin shaft, and the middle part of the stud is fixed with a hexagonal prism chuck. The thread direction is opposite, the upper part of the stud extends into and is threaded in the upper casing, the lower part of the stud extends into and is threaded in the lower casing, the upper back nut and the lower back nut are threaded on the stud, and the upper back The upper end surface of the tight nut is press-fitted with the lower end of the upper casing, and the lower end surface of the lower back tight nut is press-fitted with the upper end of the lower casing. 8. The easy-to-assemble and disassemble combined cantilever lifting device according to claim 1, characterized in that two vertical poles respectively located on the front and rear sides of the boom are arranged on the right side of the top of the upper horizontal frame, and the upper part of the two vertical poles There is a left connecting plate above the boom, the left sides of the two vertical rods are respectively connected to the top of the upper horizontal frame through the left rib plate, the right rib plate is fixed on the top of the right side of the boom along the vertical direction, and the right rib plate The right side is fixedly connected with the left side of the first pulley frame, and the left edge of the right rib plate is fixedly connected with the right connecting plate parallel to and in contact with the left connecting plate, and the left connecting plate and the right connecting plate are connected by fastening bolts.