CN110759254A - Crane suitable for roadway hoisting - Google Patents

Abstract

The invention discloses a crane suitable for roadway hoisting, comprising a lowering part and an uppering part; the lowering part includes a frame, a base, a slewing bearing, etc.; the uppering part includes a duckbill boom structure and the like; The lower part is connected to the frame, the lower part is connected to the turntable through the slewing bearing, the four corners of the base are provided with four lugs, and four legs are hinged respectively; There are two front wheels hingedly connected to the front; the drawbar is drawn out from the axle of the front wheel, which is used to connect with other vehicles to realize the walking function of the crane; one end of the duckbill boom structure is hinged with the turntable, and the other end is the free end, which For lifting heavy objects, one end of the lifting cylinder is hinged with the turntable, and the other end is hinged with the duckbill boom structure; the slewing motor is installed at the front end of the turntable and engages with the slewing bearing, which can realize the lifting, lifting and slewing functions of the crane. The invention solves the problem of lifting heavy objects in tunnels or culverts.

Description

A crane suitable for roadway hoisting

technical field

The invention belongs to the field of mobile cranes, in particular to a crane suitable for roadway hoisting, which is suitable for roadways, tunnels, culverts, etc., where the hoisting space is narrow and the extension length of the boom is limited, and the hoisting height of heavy objects can be increased.

Background technique

At present, the traditional crane boom head (position of fixed pulley) on the market is relatively close to the boom body (position of guide pulley). The problem of arm collision interference limits the maximum lifting height of heavy objects. Especially when working in some domed tunnels, tunnels or culverts, due to the limitation of the space position of the dome, the boom cannot be extended too long, and the lifting requirements of heavy objects are high and the volume is large. The problem that the lifting height cannot be reached due to the short distance between the part and the boom body is even more prominent.

SUMMARY OF THE INVENTION

In view of these problems, the present invention provides a crane suitable for roadway hoisting, which is suitable for roadways, tunnels, culverts, etc. where the hoisting space is narrow and the extension height of the boom is limited, and it can lift heavy objects with high height and large volume , and when the telescopic space of the boom is limited, the interference and collision between the heavy object and the boom is avoided, the maximum lifting height of the heavy object is increased, and the problem of heavy object lifting in the tunnel or culvert is solved.

In order to solve the above problems, the present invention adopts the following technical solutions to realize:

A crane suitable for roadway hoisting includes a lowering part and an uppering part, the lowering part includes a rear wheel, a frame, a front wheel, a drawbar, a base and a slewing bearing; the uppering part includes a duckbill boom structure , turntable, lifting oil cylinder and rotary motor; among them, the lower part of the base is connected to the frame, the lower part is connected to the turntable through a slewing bearing, the four corners of the base are provided with four lugs, which are hinged with four front and rear legs respectively; the frame is made of steel Structural frame, the rear part is connected with two rear wheels through the axle, and the front part is hinged with two front wheels, which can make the front wheel rotate around the front hinge point of the frame to realize the crane steering function; the drawbar is drawn out from the front wheel axle, It is used to connect with other vehicles to realize the walking function of the crane; one end of the duckbill boom structure is hinged with the turntable, and the other end is the free end, which is used for lifting heavy objects. One end of the lifting cylinder is hinged with the turntable, and the other end is connected with the duck The nozzle boom structure is hinged; the slewing motor is installed at the front end of the turntable and meshes with the slewing bearing, which can realize the lifting, lifting and slewing functions of the crane.

A further improvement of the present invention is that the base is a basin-shaped steel structure.

A further improvement of the present invention is that the front and rear four outriggers include two front outriggers and two rear outriggers. An outrigger cylinder is installed on the head of each front outrigger, and the tails of the two rear outriggers are respectively hinged at the left and right lugs at the rear of the base, which can rotate back and forth around the hinge point, and an outrigger cylinder is installed on the head.

A further improvement of the present invention is that the loading part further includes a telescopic bracket, and two sides of the turntable are provided with chute, the telescopic bracket can slide in the chute, and when the telescopic bracket is extended, the counterweight iron can be stacked on it.

A further improvement of the present invention is that the duckbill boom structure includes a winch, a boom, a duckbill head structure, a hook, a movable pulley block, a fixed pulley block, a guide pulley and a wire rope; wherein, the bottom end of the boom is hinged on the On the turntable, the duckbill head structure is welded on the top of the boom, the winch is installed on the turntable, the guide pulley is installed on the top of the boom, and the fixed pulley block is installed at the free end of the duckbill head structure. , Fixed pulley block, movable pulley block, hook and wire rope constitute the heavy object lifting mechanism; during operation, the hydraulic motor drives the winch to rotate, winds the wire rope, and realizes the lifting of the heavy object through the guide pulley, fixed pulley block, movable pulley block and hook. or devolve.

A further improvement of the present invention is that the boom includes a basic boom, a middle boom and a distal boom that are assembled together in sequence and can be telescopic. The bottom end of the basic boom is hinged with the turntable, and the middle is hinged with the lifting cylinder. The head structure and the distal boom are fixed as an integral structure by welding.

A further improvement of the present invention is that the intermediate boom is composed of multiple booms.

The present invention at least has the following beneficial technical effects:

1. The crane provided by the present invention adopts a chassis structure composed of a basin-shaped base and a frame. The boom is recovered to a horizontal state through a lifting oil cylinder, and the front and rear outriggers are folded to both sides of the frame to minimize its space size. It can pass through narrow spaces such as roadways, tunnels, culverts, etc. by traction by other vehicles;

2. The rotating outrigger structure is adopted, the front and rear outriggers of the crane are unfolded into an "X" shape during operation, and the telescopic outriggers can be further pulled out to provide a larger stable working surface for hoisting operations, thereby increasing the maximum lifting capacity of the crane;

3. The duckbill boom structure cantilevered out from the front, the distance between the fixed pulley and the guide pulley is 3 times larger than that of the traditional structure, and the angle between the boom head and the distal boom is increased. The distance between the hook and the boom body is greatly increased, which can effectively increase the distance between the lifting weight and the boom, and improve the interference and collision between the load and the boom body during the lifting of the load by the hook. question. In the case of the same extended length of the boom, compared with the traditional boom, the duckbill boom can lift the heavy object to a higher height due to the increase of the lateral space distance before the load occurs In the case of interference with the boom body, the lifting height of the load is effectively increased.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a top view of FIG. 1 .

FIG. 3 is a schematic structural diagram of a folded state.

FIG. 4 is a top view of FIG. 3 .

Description of reference numbers:

1-rear wheel, 2-frame, 3-front wheel, 4-traction bar, 5-base, 6-front outrigger, 6-1-telescopic outrigger, 7-slewing bearing, 8-telescopic bracket, 9- Turntable, 10—counterweight iron, 11—winch, 12—basic boom, 13—intermediate boom, 14—end boom, 15—hook, 16—lifting cylinder, 17—slewing motor, 18—rear support Legs, 19—outrigger cylinder, 20—duckbill head structure, 21—moving pulley block, 22—fixed pulley block, 23—guide pulley, 24—wire rope.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, a roadway crane provided by the present invention includes a rear wheel 1, a frame 2, a front wheel 3, a drawbar 4, a base 5, a front outrigger 6, a slewing bearing 7, a rear support The getting-off part composed of the legs 18 and the outrigger cylinders 19 also includes the upper-carriage composed of the telescopic bracket 8, the turntable 9, the counterweight 10, the winch 11, the boom, the hook 15, the lifting cylinder 16 and the slewing motor 17 part. The chassis structure consisting of a basin-shaped base and a frame has a small shape and can be pulled through other vehicles to pass through narrow spaces such as roadways, tunnels, and culverts; when working, the crane can be deployed to provide a large lifting capacity; it can effectively solve the problem of hoisting. For the problem of the collision between the weight and the boom, the lifting height of the boom is used to the greatest extent, and the lifting weight can be lifted to a higher height.

As shown in FIG. 1 and FIG. 2 , the upper part includes a telescopic bracket 8 , a turntable 9 , a counterweight 10 , a winch 11 , a boom, a hook 15 , a lift cylinder 16 and a swing motor 17 . The turntable 9 is connected with the lowering part through the slewing bearing 7, and there are chute on both sides of the turntable 9. The telescopic bracket 8 can slide in the chute, and when the telescopic bracket 8 is extended, the counterweight iron 10 can be stacked on it; The boom is composed of a basic boom 12, an intermediate boom 13 and a distal boom 14. The tail of the basic boom 12 is hinged with the turntable 9, and the head of the distal boom 14 extends laterally for a set distance, and a hook 15 is installed. , wherein the intermediate boom 13 can be composed of a multi-section boom; one end of the lifting cylinder 16 is hinged with the turntable 9, and the other end is hinged with the basic boom 12; the rotary motor 17 is installed on the turntable 9. The front end, which engages with the slewing bearing 7, can realize the lifting, lifting and slewing functions of the crane. The telescopic bracket 8 is installed in the chute of the turntable 9. When extended, the counterweight iron 10 can be stacked; the last boom 14 The head extends forward and laterally for a certain distance, and the entire upper part can complete the lifting action of the crane's boom telescopic, luffing, slewing and hoisting, and avoid the problem of collision with the boom when the lifting height of large objects is too high.

As shown in Figures 1 and 2, the alighting part does not use a special vehicle chassis, but is composed of a base 5, a frame 2, a rear wheel 1, a front wheel 3, a front outrigger 6 and a rear outrigger 18. The chassis, which is small in size and light in weight, can meet the requirements of walking in the roadway and the support requirements during work. The base 5 is a basin-shaped steel structure, the lower part of which is connected to the vehicle frame 2, the upper part is connected to the turntable 9 through the slewing bearing 7, and four lugs are arranged at the four corners of the base 5, and four front and rear legs are hinged respectively; The tails of the two front outriggers 6 are respectively hinged at the left and right lugs at the front of the base 5, and can rotate back and forth around the hinge point. They are also telescopic structures. The telescopic outriggers 6-1 can be extended and retracted along the front outriggers 6. An outrigger oil cylinder 19 is installed on the head of the outrigger 6-1; the tails of the two rear outriggers 18 are respectively hinged at the left and right lugs at the rear of the base 5, and can rotate back and forth around the hinge point. Leg oil cylinder 19; the frame 2 is a steel structure frame, the rear part is connected with two rear wheels 1 through axles, and the front part is hinged with two front wheels 3, which can make the front wheels 3 rotate around the front hinge point of the frame 2 , to realize the steering function of the crane; the drawbar 4 is drawn out from the axle of the front wheel 3, and other vehicles can be connected with the head of the drawbar 4 to realize the walking function of the crane.

When working, first rotate the front outrigger 6 by 135°, open it to both sides, then extend the telescopic outrigger 6-1, and finally put down the outrigger oil cylinder 19, and at the same time rotate the rear outrigger 18 by 45° , put down the outrigger cylinder 19, play the role of supporting the crane, and then perform the action of the upper part. After the work is completed, the upper part is first retracted, and then the front outrigger 6 and the rear outrigger 18 are retracted according to the above-mentioned opposite actions. Figures 3 and 4 are schematic views of the crane after the crane is folded.

As shown in Figures 1, 3 and 4, the duckbill boom structure includes a winch 11, a basic boom 12, an intermediate boom 13, a distal boom 14, a duckbill head structure 20, and a hook 15 , Moving pulley block 21 , fixed pulley block 22 , guide pulley 23 and wire rope 24 . The bottom end of the basic boom 12 is connected to the turntable 9 through a hinged structure, the middle of the basic boom 12 is connected to the lifting cylinder 16 through a hinged structure, and the duckbill head structure 20 and the end boom 14 are welded by welding It is fixed as an integral structure, and the weight lifting mechanism is composed of the winch 11 , the guide pulley 23 , the fixed pulley block 22 , the movable pulley block 21 , the hook 15 and the wire rope 24 . During operation, the hydraulic motor drives the winch 11 to rotate, winds the wire rope 24, and lifts or lowers the heavy objects through the guide pulley 23, the fixed pulley block 22, the movable pulley block 21 and the hook 15, as shown in Figure 1.

The specific embodiments described above are only exemplary, and should not be construed as limiting the protection scope of the present invention. Therefore, any changes or modifications made in accordance with the claims and description of the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. A crane suitable for roadway hoisting, characterized in that it comprises a disembarking part and an ascending part, and the disembarking part comprises a rear wheel (1), a vehicle frame (2), a front wheel (3), a drawbar (4) ), a base (5) and a slewing bearing (7); the upper part includes a duckbill boom structure, a turntable (9), a lifting cylinder (16) and a slewing motor (17); wherein, The lower part of the base (5) is connected with the frame (2), the lower part is connected with the turntable (9) through the slewing bearing (7), four support lugs are arranged at four corners of the base (5), and four front and rear support legs are hinged respectively; The frame (2) is a steel structure frame, the rear part is connected with two rear wheels (1) through axles, and the front part is hinged with two front wheels (3), so that the front wheels (3) can be hinged around the front end of the frame (2). Rotate at the point of rotation to realize the crane's steering function; draw out the drawbar (4) at the axle of the front wheel (3) to connect with other vehicles to realize the crane's walking function; One end of the duckbill boom structure is hinged with the turntable (9), and the other end is a free end, which is used for lifting heavy objects. One end of the lifting cylinder (16) is hinged with the turntable (9), and the other end is hinged with the duckbill crane. The arm structure is hinged; the slewing motor (17) is installed at the front end of the turntable (9) and is engaged with the slewing bearing (7), so that the lifting, lifting and slewing functions of the crane can be realized. 2. A crane suitable for roadway hoisting according to claim 1, characterized in that the base (5) is a basin-shaped steel structure. 3. A crane suitable for roadway hoisting according to claim 1, characterized in that the front and rear four outriggers comprise two front outriggers (6) and two rear outriggers (18), and the two front outriggers The tails of the legs (6) are respectively hinged at the left and right lugs at the front of the base (5), and can rotate back and forth around the hinge points. The heads of the two front legs (6) are provided with leg oil cylinders (19), and the two rear legs are provided with leg cylinders (19). The tails of the legs (18) are respectively hinged at the left and right support ears at the rear of the base (5), and can rotate back and forth around the hinge points, and a leg oil cylinder (19) is installed on the head thereof. 4. A crane suitable for roadway hoisting according to claim 3, characterized in that the loading part further comprises a telescopic bracket (8), and two sides of the turntable (9) are provided with chutes, and the telescopic bracket (8) It can slide in the chute, and when the telescopic bracket (8) is extended, the counterweight iron (10) can be stacked on it. 5. A crane suitable for roadway hoisting according to claim 1, wherein the duckbill boom structure comprises a winch (11), a boom, a duckbill head structure (20), a hook (15), a movable pulley block (21), a fixed pulley block (22), a guide pulley (23) and a wire rope (24); wherein the bottom end of the boom is hinged on the turntable (9), and the duckbill head structure (20) ) is welded on the top of the boom, the winch (11) is mounted on the turntable (9), the guide pulley (23) is mounted on the top of the boom, and the fixed pulley block (22) is mounted on the free side of the duckbill head structure (20). At the end, the weight lifting mechanism is composed of a winch (11), a guide pulley (23), a fixed pulley block (22), a movable pulley block (21), a hook (15) and a wire rope (24); during operation, the hydraulic motor drives the winch (11) Rotate, wind the wire rope (24), and realize the lifting or lowering of the heavy object through the guide pulley (23), the fixed pulley block (22), the movable pulley block (21) and the hook (15). 6. A crane suitable for roadway hoisting according to claim 5, characterized in that the jib comprises a basic jib (12), a middle jib (13) and a distal jib that are assembled together in sequence and can be telescopic (14), the bottom end of the basic boom (12) is hinged with the turntable (9), the middle part is hinged with the lift cylinder (16), and the duckbill head structure (20) and the end boom (14) are welded by welding fixed as a whole structure. 7. A crane suitable for roadway hoisting according to claim 6, characterized in that the middle boom (13) is composed of multiple booms.

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