CN209396793U - A mast hoisting device - Google Patents

Abstract

The utility model provides a mast hoisting device, which belongs to the technical field of municipal construction. It solves the problems of low hoisting efficiency of the existing mast crane, unsuitability for use in areas with difficult electricity consumption and poor safety. The mast hoisting device includes a base plate, a column vertically fixed on the base plate, and a rotating sleeve arranged on the column that can rotate along the central axis of the column. The rotating sleeve is hinged with a support rod that can swing up and down. There is a fixed structure for fixing the pole when the pole swings in place. The top of the rotating sleeve is provided with a fixed pulley 1, and the end of the pole away from the rotating sleeve is provided with a fixed pulley 2. The rotating sleeve is fixed with a support seat to support A capstan and an anti-reversal structure for preventing the capstan from reversing are arranged on the seat, and the traction rope drawn out from the capstan goes around the first fixed pulley and the second locating pulley in turn and is connected with a clamping structure. The utility model has the advantages of high hoisting efficiency, wide application range and high safety.

Description

A mast hoisting device

technical field

The utility model belongs to the technical field of municipal construction and relates to a mast hoisting device.

Background technique

Mast type crane is the equipment that is used for carrying heavy objects in engineering construction, discloses a kind of mast type crane jib assembly [authorized announcement number is CN204823910U] as Chinese patent, it comprises base, and the middle part of the upper surface of base is provided with mast , the upper surface of the base is provided with a pin rotating member, the pin rotating member is connected to the boom, the upper end of the mast is provided with a wire rope, the wire rope is connected to the hook through the top of the boom, and the lower part of the pin rotating member is provided with a gear guide rail, the base The inner side of the base is provided with a base boss, and the upper side of the base boss is provided with a roller.

Although it has the advantage of a large range of boom rotation, it still has the following problems in use: since the wire rope is connected to the top of the boom through a hook, it is difficult to bind the heavy objects to be hoisted before hoisting. Affect the hoisting efficiency; the winding of the wire rope is realized by the winch, which is generally driven by electricity. When the equipment is in an area where electricity is difficult to use, the winch cannot work; There are external forces acting on the hoist all the time, which requires high strength of the workers, the workers are prone to fatigue, and the safety is poor.

Contents of the invention

The purpose of this utility model is to propose a mast hoisting device which is convenient for manpower operation in view of the above-mentioned problems in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A mast hoisting device, comprising a base plate, a column vertically fixed on the base plate, and a rotating sleeve arranged on the column that can rotate along the central axis of the column, the rotating sleeve is hinged with a support rod that can swing up and down, and the A fixed structure for fixing the strut after the strut swings into place is provided between the strut and the rotating sleeve. The second pulley is characterized in that a supporting base is fixed on the rotating sleeve, a winch and an anti-reversing structure for preventing the winch from reversing are arranged on the described supporting base, and the traction rope drawn out from the winch bypasses the fixed The pulley one and the positioning wheel two are connected with a clamping structure behind.

The rotating sleeve is arranged on the column, and a bearing is arranged between the rotating sleeve and the column. In order to improve the stability of the column, an obliquely arranged pull rod is fixed on the bottom plate, and the upper end of the pull rod is fixedly connected with the middle part of the column. The fixed pulley one and the fixed pulley two are set in cooperation, and the traction rope is a steel wire rope. The support seat is located on the side of the rotating sleeve away from the pole, and its height is convenient for manual operation. When working, the bottom plate is fixed, the heavy object is clamped by the clamping structure, and the winch is manually driven to wind up the traction rope, which drives the clamping structure to move upward. Due to the anti-reverse structure, the safety of hoisting can be improved. The fixed structure is located above the strut, and the traction rope straddling between the first fixed pulley and the second fixed pulley is located above the fixed structure.

In order to facilitate disassembly, the column and the bottom plate are connected by bolts, the pull rod is connected with the column by bolts, and the pull rod is connected with the bottom plate by bolts.

In the above-mentioned mast hoisting device, two oppositely arranged supports are fixed on the support seat, and a rotating shaft is pierced between the two described supporting seats, and the winch is sleeved on the rotating shaft and the winch is located on the Between the two supports, a crank is provided on the winch.

The capstan is coaxially connected with the rotating shaft, a bearing is provided between the rotating shaft and a straight support, and a bearing is also provided between the other support, and the crank is fixed on the rotating shaft. When the handle is turned, it will drive the rotating shaft to rotate, thereby driving the winch to rotate.

In the above-mentioned mast hoisting device, the anti-reversal structure includes a hinge seat fixed on the support seat, a hook hinged on the hinge seat, and a plurality of bayonet pins distributed in an annular array on one end of the winch. The bayonet pin extends in the axial direction of the rotating shaft. The hook includes a rod body perpendicular to the bayonet pin and a hook perpendicular to the rod body at one end of the rod body. The hook portion is perpendicular to the bayonet pin. When the rod body leans against When one of the bayonets is on, the hook portion leans against another bayonet adjacent to the bayonet.

During normal lifting, the crank drives the winch to rotate, and the bayonet pins contact the rod body in turn, and the winch can rotate normally to gather the traction rope of the lifting object. The length of the crank is four times the diameter of the winch. According to the principle of the wheel shaft, it can save 4 times the force. When lifting abnormally, that is, when the winch is reversed, the hook just bears against the bayonet pin, so that the winch stops rotating, and the lifting of heavy objects stops. In the non-lifting state, pull the hook to make it rotate to the side away from the winch, the winch reverse is not restricted, and the clamping structure is quickly lowered.

In the above-mentioned mast hoisting device, the ends of the bayonet pins away from the winch are fixedly connected to a stop ring, and the distance from the stop ring to the winch is greater than the diameter of the rod body. The retaining ring can improve the stability of several bayonet pins, and at the same time, can limit the bayonet to prevent the bayonet from falling off.

In the above-mentioned mast hoisting device, two limit rods arranged parallel to each other are fixed on the support base, the limit rods are located between the hinge seat and the bayonet pin, and the rod body is located between the two limit rods. between the poles. The distance between the two limit rods is equal to/slightly greater than the diameter of the rod body, which can prevent the rod body from deviating. The rod body can slide and move between the two limit rods.

In the above-mentioned mast hoisting device, the clamping structure includes a suspension ring and a scissors clip. A clamp is respectively arranged at each part, and the two clamps are arranged opposite to each other. The clamping structure is used for fast clamping and loosening of heavy objects. The traction rope drives the clamping structure up, causing the two soft connecting ropes to act on the handle of the scissors clips so that the scissors clips have a tendency to close. Through the upper part of the scissors clips Closing produces force to impel the two clamps to close. The heavier the clamped object, the greater the force transmitted to the clamp through the scissors clamp, the greater the friction resistance generated, and the more stable the clamped object. The fixture is two metal blocks, which are fixed on the scissors clip by welding. The opposite surface of the fixture has a concave "cross" groove, which increases the point of stress with the heavy object.

In the above-mentioned mast hoisting device, the traction rope is drawn out from the winch and then bypasses the first fixed pulley and the second fixed pulley and is fixedly connected with the strut, and the traction rope is located between the second fixed pulley and the strut. The part is provided with a movable pulley, and the above-mentioned suspension ring is located on the movable pulley. The movable pulley is provided with a hook, and the suspension ring is hung on the hook. By changing the force direction through fixed pulley 1 and fixed pulley 2, a fixed pulley saves half of the force.

In the above-mentioned mast hoisting device, the fixed structure includes a stay rope whose one end is fixedly connected with the strut, and the other end of the stay rope is fixedly connected with the upper end of the rotating sleeve, and the stay rope is provided with a Turnbuckle to adjust the length of the cord. Through the expansion and contraction of the turnbuckle bolts, the strut can swing up and down within the range of 0° to 70°, and with the 360° rotation of the rotating sleeve, it can satisfy the lifting of heavy objects at any position.

Compared with the prior art, the mast lifting device has the following advantages:

The set scissors clip is used to quickly clamp and loosen the heavy object, which can effectively improve the work efficiency. Lifting heavy objects saves effort and is easy for one person to operate; it is equipped with an anti-reverse structure to improve safety.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment provided by the utility model.

Fig. 2 is a structural schematic diagram of the anti-reversal structure provided by the utility model.

Fig. 3 is a top view of the anti-reverse structure provided by the present invention.

In the figure, 1, bottom plate; 2, upright column; 3, rotating sleeve; 4, strut; 5, tie rod; 6, fixed pulley one; 7, fixed pulley two; 8, support base; ; 11, support; 12, rotating shaft; 13, crank handle; 14, hinged seat; 15, bayonet pin; 16, rod body; 17, hook; 18, retaining ring; 19, limit rod; , scissor clip; 22, connecting rope; 23, fixture; 24, movable pulley; 25, pull rope; 26, turnbuckle bolt.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

The mast hoisting device shown in Figure 1 includes a base plate 1, a column 2 vertically fixed on the base plate 1, and a rotating sleeve 3 arranged on the column 2 that can rotate along the central axis of the column 2, and the rotating sleeve 3 is hinged. The swinging strut 4 is provided with a fixed structure for fixing the strut 4 after the strut 4 swings in place between the strut 4 and the rotating sleeve 3. The top of the rotating sleeve 3 is provided with a fixed pulley 6, and the strut 4 One end away from the rotating sleeve 3 is provided with a fixed pulley 2 7, the rotating sleeve 3 is fixed with a support base 8, and the support base 8 is provided with a capstan 9 and an anti-reversal structure for preventing the capstan 9 from reversing. The traction rope 10 that 9 draws is connected with a clamping structure behind fixed pulley one 6 and positioning pulley two successively. In order to facilitate disassembly, the column 2 is connected to the bottom plate 1 by bolts, the tie rod 5 is connected to the column 2 by bolts, and the tie rod 5 is connected to the bottom plate 1 by bolts.

The rotating sleeve 3 is set on the column 2, and a bearing is arranged between the rotating sleeve 3 and the column 2. In order to improve the stability of the column 2 , a tie rod 5 arranged obliquely is fixed on the bottom plate 1 , and the upper end of the tie rod 5 is fixedly connected with the middle position of the column 2 . Fixed pulley one 6 is arranged with fixed pulley two 7, and traction rope 10 is a wire rope. The support seat 8 is located on the side of the rotating sleeve 3 away from the strut 4, and its height is convenient for manual operation. During work, the bottom plate 1 is fixed, the heavy object is clamped by the clamping structure, and the capstan 9 is manually driven to wind up the traction rope 10 to drive the clamping structure to move upward. Due to the anti-reverse structure, the safety of hoisting can be improved. The fixed structure is located above the strut 4, and the traction rope 10 straddling between the first fixed pulley 6 and the second fixed pulley 7 is located above the fixed structure.

As shown in Figure 1-3, two oppositely arranged supports 11 are fixed on the supporting base 8, and a rotating shaft 12 is pierced between the two supporting seats 11. Between, winch 9 is provided with crank 13. The capstan 9 is coaxially connected with the rotating shaft 12, and a bearing is provided between the rotating shaft 12 and the straight support 11, and a bearing is also provided between the other support 11, and the crank handle 13 is fixed on the rotating shaft 12. When the handle 13 is pulled, the rotating shaft 12 will be driven to rotate, thereby driving the capstan 9 to rotate. Cranking handle 13 lengths are four times of capstan 9 diameters, according to wheel axle principle, can save 4 times of power.

As shown in Figure 2, the anti-reversal structure includes a hinged seat 14 fixed on the support base 8, a hook hinged on the hinged seat 14, and a number of bayonet pins 15 distributed on one end of the winch 9 in an annular array, and the bayonet pin 15 is along the The axial extension of the rotating shaft 12, the hook includes a rod body 16 perpendicular to the bayonet pin 15 and a hook portion 17 perpendicular to the rod body 16 arranged at one end of the rod body 16, the hook portion 17 is perpendicular to the bayonet pin 15, when the rod body 16 leans against it When one bayonet 15 is on, the hook 17 leans against another bayonet 15 adjacent to the bayonet 15 .

The length of the rod body 16 is less than the distance from the rotating shaft 12 to the hinge seat 14. When the upper end of the rod body 16 is close to the capstan 9, the hook extends upwards. When the capstan 9 is in the state shown in Figure 2, the capstan 9 rotates counterclockwise and winds , unwind when rotating clockwise. Wherein, there are 8 bayonet pins 15, and the central angle between two adjacent bayonet pins 15 is 45°. on the bayonet pin 15 at the When capstan 9 rotates counterclockwise, bayonet pin 15 extrudes body of rod 16 and body of rod 16 moves upwards, can not hinder the rotation of capstan 9, capstan 9 rotates 45 ° angle body of rods 16 and moves upward once. When the capstan 9 rotated clockwise, the capstan 9 was stopped from rotating due to the hindrance of the grab, and the heavy lifting work stopped.

When in the non-lifting state, pull the grab to make it rotate to the side away from the winch 9, the winch 9 reverses unrestricted, and quickly lowers the clamping structure.

As shown in FIG. 3 , the ends of the bayonet pins 15 away from the capstan 9 are fixedly connected to a retaining ring 18 , and the distance between the retaining ring 18 and the capstan 9 is greater than the diameter of the rod body 16 . The retaining ring 18 can improve the stability of several bayonet pins 15, and can limit the catch at the same time to prevent the catch from falling off.

As shown in Figure 2 and Figure 3, two limit rods 19 arranged parallel to each other are fixed on the support base 8, the limit rod 19 is located between the hinge seat 14 and the bayonet pin 15, and the rod body 16 is located between the two limit rods 19 . The distance between the two limit rods 19 is slightly larger than the diameter of the rod body 16, which can prevent the rod body 16 from deviating. The rod body 16 can slide and move between the two limit rods 19 .

As shown in Figure 1, the clamping structure includes a suspension ring 20 and a scissors clip 21, the two handles of the scissors clip 21 are connected to the suspension ring 20 through a connecting rope 22 respectively, and the two clamping parts of the scissors clip 21 are respectively provided with One clamp 23, and two clamps 23 are arranged opposite to each other. The clamping structure is used for fast clamping and loosening of heavy objects. The traction rope 10 drives the clamping structure up, causing the two soft connecting ropes 22 to act on the handle of the scissors clamp 21 so that the scissors clamp 21 has a tendency to close. Force is generated by closing the upper part of the scissors clamp 21 to impel the two clamps 23 to close together. The heavier the clamped object, the greater the power transmitted to the clamp 23 by the scissors clamp 21, the greater the frictional resistance generated, and the more stable the clamped object. The clamp 23 is two metal blocks, which are fixed on the scissors clamp 21 by welding. The opposite surface of the clamp 23 has a concave "cross" groove, which increases the stress point with the weight.

As shown in Figure 1, the traction rope 10 is drawn out from the winch 9 and then bypasses the first fixed pulley 6, the second fixed pulley 7, and then is fixedly connected with the strut 4, and the traction rope 10 is located at the part between the second fixed pulley 7 and the strut 4 A movable pulley 24 is arranged on the top, and the suspension ring 20 is located on the movable pulley 24 . The movable pulley 24 is provided with a hook, and the suspension ring 20 is hung on the hook. By fixed pulley one 6 and fixed pulley two 7 to change the force direction, a fixed pulley saves half of the force.

As shown in Figure 1, the fixed structure includes a stay cord 25 with one end connected to the strut 4, the stay cord 25 is a steel wire rope, the other end of the stay cord 25 is fixedly connected with the upper end of the rotating sleeve 3, and the stay cord 25 is provided with There is a turnbuckle 26 for adjusting the length of the stay cord 25 . Through the expansion and contraction of the turnbuckle bolt 26, the strut 4 can swing up and down within the range of 0° to 70°, and with the 360° rotation of the swivel sleeve 3, it can satisfy the hoisting of heavy objects at any position.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (8)

1. A mast hoisting device, comprising a base plate (1), a column (2) vertically fixed on the base plate (1) and a rotating sleeve (3) arranged on the column (2) that can rotate along the central axis of the column (2) ), the pivoting sleeve (3) is hinged with a strut (4) that can swing up and down, and a strut (4) is provided between the strut (4) and the swivel sleeve (3). A fixed structure for fixing the strut (4), the top end of the rotating sleeve (3) is provided with a fixed pulley (6), and the end of the strut (4) away from the rotating sleeve (3) is provided with a fixed pulley The pulley two (7) is characterized in that a support seat (8) is fixed on the rotating sleeve (3), and a capstan (9) is provided on the support seat (8) to prevent the capstan (9) The reverse anti-reverse structure, the traction rope (10) drawn by winch (9) is connected with a clamping structure after going around fixed pulley one (6) and positioning pulley two successively. 2. A kind of mast hoisting device according to claim 1, characterized in that, two oppositely arranged supports (11) are fixed on the said support base (8), and one of the two described supports (11) There is a rotating shaft (12) between them, the winch (9) is sleeved on the rotating shaft (12) and the winch (9) is located between the two supports (11), and the winch (9) is provided with a rocker Put (13). 3. A kind of mast hoisting device according to claim 2, characterized in that, the anti-reversal structure comprises a hinged seat (14) fixed on the support seat (8), hinged on the hinged seat (14) The snap hook and several annular arrays are distributed on the bayonet (15) on one end of the winch (9), and the described bayonet (15) extends along the axial direction of the rotating shaft (12), and the described bayonet includes and bayonet ( 15) vertical rod body (16) and the hook portion (17) perpendicular to the rod body (16) that is located at one end of the rod body (16), the described hook portion (17) is perpendicular to the bayonet pin (15), when the rod body (16) ) tilts against one of the bayonet pins (15), the hook portion (17) leans against another bayonet pin (15) adjacent to the bayonet pin (15). 4. A kind of mast hoisting device according to claim 3, is characterized in that, one end of several described bayonet pins (15) away from winch (9) is fixedly connected with a retaining ring (18), and described retaining ring ( 18) The distance to the winch (9) is greater than the diameter of the rod body (16). 5. A kind of mast hoisting device according to claim 3, characterized in that, two limit rods (19) arranged parallel to each other are fixed on the support seat (8), and the limit rods (19) ) is located between the hinge seat (14) and the bayonet pin (15), and the rod body (16) is located between the two limit rods (19). 6. A kind of mast hoisting device according to claim 1, characterized in that, the clamping structure comprises a suspension ring (20) and a scissors clip (21), and the two handles of the scissors clip (21) are respectively Connected to the suspension ring (20) by a connecting rope (22), two clamps (23) are respectively provided at the two clamping parts of the scissors clamp (21), and the two clamps (23) are arranged oppositely. 7. A kind of mast hoisting device according to claim 6, characterized in that, after said traction rope (10) is drawn out from the winch (9), it goes around fixed pulley one (6) and fixed pulley two (7) in sequence Connect with strut (4) after the back, described traction rope (10) is positioned at the part between fixed pulley two (7) and strut (4) and is provided with movable pulley (24), and above-mentioned suspension ring (20) sets On the movable pulley (24). 8. A kind of mast hoisting device according to claim 1, characterized in that, said fixing structure comprises a stay rope (25) whose one end is fixedly connected with the strut (4), and the other end of said stay rope (25) One end is fixedly connected with the upper end of the rotating sleeve (3), and the stay cord (25) is provided with a turnbuckle bolt (26) for adjusting the length of the stay cord (25).