CN111824972A - crane - Google Patents

Abstract

The disclosure provides a crane, and belongs to the field of crane equipment. The hoist includes the main part subassembly, the hook component, the counter weight subassembly, the main part subassembly includes the foundation pillar, rotate the post, davit and driving rope, the hook component includes lifting hook and first rope, the counter weight subassembly includes first pulley, the second rope and the counterweight frame that is used for shelving the balancing weight, first pulley is located the top of rotating the post, and first pulley protrusion in the periphery wall of rotating the post, the first end of second rope links together with the top of davit, the second end of second rope passes first pulley and links together with the counterweight frame, the counterweight frame is located the outer wall of rotating the post along rotating post axial slidable. The crane provided by the disclosure can be used for offsetting the weight of the suspension arm by placing the balancing weight on the counterweight frame, so that the suspension arm can be used for adjusting the inclination angle with less energy consumption during pitching motion.

Description

crane

technical field

The present disclosure belongs to the field of crane equipment, and particularly relates to a crane.

Background technique

Cranes are commonly used equipment in workshops, ports, construction sites and other production sites, and are used to lift heavy objects to achieve the purpose of conveying.

When conveying different heavy objects, it is necessary to adjust the inclination of the boom, that is, to control the boom to perform pitching motion. In the related art, the pitching motion of the boom is usually realized by arranging components such as a high-power motor, a reducer, and a cooler.

However, the above-mentioned method for realizing the pitching motion of the boom will greatly increase the energy consumption of the crane, thereby greatly increasing the production cost of the crane.

SUMMARY OF THE INVENTION

The embodiment of the present disclosure provides a crane, which can offset the weight of the boom by placing a counterweight on the counterweight frame, so that the boom can complete the adjustment of the inclination angle with less energy consumption during the pitching motion . The technical solution is as follows:

An embodiment of the present disclosure provides a crane, the crane includes a main body assembly, a hook assembly and a counterweight assembly;

The main body assembly includes a base column, a rotating column, a boom and a driving rope, the bottom end of the rotating column is rotatably coaxially located on the top end of the base column, and the bottom end of the boom is hinged on the rotating On the column, the first end of the driving rope is connected with the driving rope winch on the rotating column, and the second end of the driving rope is connected with the top end of the boom;

The hook assembly includes a hook and a first rope, the first end of which is connected to a rope winch on the rotating column, and the second end of the first rope passes through the boom The top of the hook is connected with the hook;

The counterweight assembly includes a first pulley, a second rope and a counterweight frame for placing the counterweight block, the first pulley is located at the top end of the rotating column, and the first pulley protrudes from the rotating column. the outer peripheral wall of the column, the first end of the second rope is connected with the top end of the boom, the second end of the second rope is connected with the counterweight frame through the first pulley , the counterweight frame is slidably located on the outer wall of the rotating column along the axial direction of the rotating column.

Optionally, the counterweight frame includes a guide plate and a counterweight plate for placing the counterweight block, the guide plate and the counterweight plate are vertical and connected together, and the guide plate is movably The second end of the second rope is connected with the top of the guide plate.

Optionally, a guide wheel is provided on the outer edge of the guide plate, a guide rail is provided on the outer wall of the rotating column, and the guide wheel is in rolling fit with the guide rail.

Optionally, the counterweight plate has an insertion rod for inserting the counterweight block, the insertion rod is perpendicular to the counterweight plate, and the insertion rod is located in the middle of the counterweight plate, The top end of the insertion rod has a locking member for locking the counterweight.

Optionally, the locking member includes a circular ring and a plurality of handles, the circular ring is threadedly assembled on the insertion rod, and the plurality of the handles are arranged at intervals along the circumference of the outer wall of the circular ring.

Optionally, the counterweight frame further includes a connecting rod, one end of the connecting rod is connected with the middle part of the guide plate, and the other end of the connecting rod is connected with the middle part of the counterweight plate.

Optionally, the counterweight assembly further includes a second pulley, the second pulley is located on the boom near the top end, and the first end of the second rope is connected with the second pulley.

Optionally, the top of the counterweight frame has a connecting frame, and the second end of the second rope is located on the connecting frame.

Optionally, the rotating column is provided with a third pulley, and the first end of the first rope passes through the third pulley and is connected to the rope winch of the rotating column.

Optionally, the rotating column is provided with a fourth pulley, and the first end of the driving rope passes through the fourth pulley and is connected to the driving rope winch on the rotating column.

The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure are:

For the crane provided by the embodiment of the present disclosure, the first end of the first rope is connected with the rope winch of the rotating column, and the second end of the first rope is connected with the hook through the top end of the boom, so that it can be rotated by rotating The rope winch on the column retracts the first rope to realize the lifting movement of the heavy object. The bottom end of the rotating column is rotatably coaxially located on the top of the base column, and the bottom end of the boom is hinged on the rotating column, so that the rotation of the boom is realized by rotating the rotating column, thereby realizing the transportation of heavy objects. In addition, the first end of the driving rope is connected with the driving rope winch on the rotating column, and the second end of the driving rope is connected with the top end of the boom. The driving rope can be retracted and unloaded through the driving rope winch on the rotating column. , so as to realize the adjustment of the inclination angle of the boom.

Further, the first pulley is located at the top of the rotating column and protrudes from the rotating column, the first end of the second rope is connected with the top end of the boom, and the second end of the second rope passes through the first pulley and the counterweight. The frames are connected together, and the counterweight frame is slidably located on the outer wall of the rotating column along the axial direction of the rotating column. Then, when the inclination angle of the boom needs to be changed, the self-gravity of the counterweight on the counterweight frame can be used to assist the change of the inclination angle of the boom, so that the rotation of the boom is more labor-saving, so that the driving rope winch consumes The tilt angle adjustment of the boom can be completed with less energy consumption, thereby greatly reducing energy consumption.

That is to say, with the crane provided by the present disclosure, the counterweight block can be placed on the counterweight frame, so that part of the weight of the boom can be offset, so that the boom can complete the tilt angle with less energy consumption during the pitching motion. Adjustment, thereby greatly reducing the production cost of the crane.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a crane provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a counterweight frame provided by an embodiment of the present disclosure.

The meanings of the symbols in the figure are as follows:

1. Main assembly; 11, base column; 12, rotating column; 121, guide rail; 1211, rail body; 1222, fulcrum group; 1223, fulcrum; 122, third pulley; 123, fourth pulley; 124, first A bracket; 125, the second bracket; 126, the third bracket; 127, the shaft; 13, the boom; 131, the fifth pulley; 132, the sixth pulley; 14, the driving rope;

2. Hook assembly; 21. Hook; 22. The first rope;

3. Counterweight assembly; 31, the first pulley; 32, the second rope; 33, the counterweight frame; 331, the guide plate; 3311, the guide wheel; 3312, the guide wheel frame; 332, the counterweight plate; ; 3322, locking piece; 3323, ring; 3324, handle; 3325, connecting frame; 333, connecting rod; 34, second pulley;

100, counterweight; 200, slewing bearing.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a crane provided by an embodiment of the present disclosure. As shown in FIG. 1 , the crane includes a main body assembly 1 , a hook assembly 2 and a counterweight assembly 3 .

The main body assembly 1 includes a base column 11 , a rotating column 12 , a boom 13 and a driving rope 14 . The bottom end of the rotating column 12 is rotatably coaxially located on the top of the base column 11 , and the bottom end of the boom 13 is hinged to the rotating column 12 . The first end of the driving rope 14 is connected with the driving rope winch on the rotating column 12 , and the second end of the driving rope 14 is connected with the top end of the boom 13 .

The hook assembly 2 includes a hook 21 and a first rope 22, the first end of the first rope 22 is connected with the rope winch on the rotating column 12, and the second end of the first rope 22 passes through the top end of the boom 13 and The hooks 21 are connected together.

The counterweight assembly 3 includes a first pulley 31 , a second rope 32 and a counterweight frame 33 for placing the counterweight 100 . The first pulley 31 is located at the top of the rotating column 12 , and the first pulley 31 protrudes from the rotating column 12 The first end of the second rope 32 is connected with the top end of the boom 13, the second end of the second rope 32 is connected with the counterweight frame 33 through the first pulley 31, and the counterweight frame 33 is The rotating column 12 is axially slidably located on the outer wall of the rotating column 12 .

For the crane provided by the embodiment of the present disclosure, the first end of the first rope 22 is connected with the rope winch of the rotating column 12, and the second end of the first rope 22 is connected with the hook 21 through the top of the boom 13 , so that the lifting motion of the heavy object can be realized by retracting and retracting the first rope 22 by the rope winch on the rotating column 12 . The bottom end of the rotating column 12 is rotatably coaxially located on the top end of the base column 11, and the bottom end of the boom 13 is hinged on the rotating column 12, so that the rotating column 12 can be rotated to realize the rotation of the boom 13, thereby realizing the Transport of heavy objects. In addition, the first end of the driving rope 14 is connected with the driving rope winch on the rotating column 12, and the second end of the driving rope 14 is connected with the top end of the boom 13, which can be realized by the driving rope winch on the rotating column 12. The retraction and retraction of the driving rope 14 can realize the adjustment of the inclination angle of the boom 13 .

Further, the first pulley 31 is located at the top end of the rotating column 12 and protrudes from the rotating column 12, the first end of the second rope 32 is connected with the top end of the boom 13, and the second end of the second rope 32 passes through The first pulley 31 is connected with the counterweight frame 33 , and the counterweight frame 33 is slidably located on the outer wall of the rotary column 12 along the axial direction of the rotary column 12 . Then, when the inclination angle of the boom 13 needs to be changed, the self-gravity of the counterweight 100 on the counterweight frame 33 can be used to assist the change of the inclination angle of the boom 13, so that the rotation of the boom 13 is more labor-saving, thereby The inclination angle adjustment of the boom 13 can be completed so that the driving rope winch consumes less energy, thereby greatly reducing the energy consumption.

That is to say, with the crane provided by the present disclosure, the counterweight block 100 can be placed on the counterweight frame 33, so that part of the weight of the boom 13 can be offset, so that the boom 13 can provide less energy consumption during the pitching motion. The adjustment of the inclination angle is completed, thereby greatly reducing the production cost of the crane.

It should be noted that both the driving rope winch and the rope winch are located inside the rotating column 12 (not shown).

It should be noted that the foundation column 11 can be inserted on the fixed piles in the production site, and the installation of the crane can be realized by the fixed piles. In other embodiments of the present disclosure, the base column 11 can also be located on the chassis of the truck, and the position of the crane can be moved by the truck, so that it is suitable for different production sites and can effectively improve the use efficiency.

Exemplarily, the rotating column 12 has a first bracket 124 on which the first pulley 31 is located.

In this way, the installation of the first pulley 31 on the rotating column 12 is facilitated.

It should be noted that the second rope 32 is slidably inserted into the first pulley 31 , and the two ends thereof are respectively connected with the counterweight frame 33 and the boom 13 .

Continuing to refer to FIG. 1 , the counterweight assembly 3 further includes a second pulley 34 , the second pulley 34 is located on the boom 13 near the top end, and the first end of the second rope 32 is connected with the second pulley 34 .

In the above embodiment, the second pulley 34 acts as a movable pulley on the boom 13 , which facilitates the connection between the second rope 32 and the boom 13 on the one hand, and saves effort by using the movable pulley, thereby facilitating the movement of the boom 13 . Tilt movement.

In the present embodiment, both the first pulley 31 and the second pulley 34 include a plurality of pulley bodies, that is, the second rope 32 passes through the pulley body of the first pulley 31 and the pulley body of the second pulley 34 in sequence, and finally Connected with one pulley body of the second pulley 34, the plurality of pulley bodies of the second pulley 34 function as moving pulleys, which can effectively save manpower.

That is to say, the first end of the second rope 32 is slidably inserted through one pulley body of the first pulley 31, one pulley body of the second pulley 34, the other pulley body of the first pulley 31, the second pulley body The other pulley body of the pulley 34 and so on are analogous, and the manpower can be effectively saved by using the second rope 32 in cooperation with the plurality of pulley bodies of the first pulley 31 and the second pulley 34 .

Optionally, the top of the counterweight frame 33 has a connecting frame 3325 , and the second end of the second rope 32 is located on the connecting frame 3325 .

In the above embodiment, the connection frame 3325 facilitates the connection and fixation of the second rope 32 and the counterweight frame 33 .

In this example, the connecting frame 3325 can be a U-shaped structural member, the two vertical rods of the connecting frame 3325 are both extended along the axial direction of the rotating column 12, and the second end of the second rope 32 is located on the horizontal bar of the connecting frame 3325 ( See Figure 2).

Optionally, the rotating column 12 is provided with a third pulley 122 , and the first end of the first rope 22 is connected to the rope winch of the rotating column 12 through the third pulley 122 .

In the above embodiment, the third pulley 122 has the function of guiding and reducing friction for the first rope 22 , so that the first rope 22 is connected with the rope winch of the rotating column 12 together.

Exemplarily, the top end of the boom 13 has a fifth pulley 131 , and the second end of the first rope 22 is connected with the hook 21 through the fifth pulley 131 , so that the friction between the first rope 22 and the boom 13 can be reduced force.

Exemplarily, a second bracket 125 is arranged on the rotating column 12 , and the third pulley 122 is arranged on the second bracket 125 .

Exemplarily, the heavy object is hooked on the hook 21. When the rope winch of the rotating column 12 is driven by the motor to rotate forward, the recovery of the first rope 22 is realized, that is, the hook 21 is moved up, so as to drive the heavy object on the hook 21. shift. Similarly, when the rope winch of the rotating column 12 is driven by the motor to reverse, the first rope 22 is released, that is, the hook 21 moves down, thereby driving the weight to move down.

Optionally, the rotating column 12 is provided with a fourth pulley 123 , and the first end of the driving rope 14 is connected to the driving rope winch on the rotating column 12 through the fourth pulley 123 .

In the above-mentioned embodiment, the fourth pulley 123 has the function of guiding and reducing friction for the driving rope 14 , so that the driving rope 14 and the driving rope winch of the rotating column 12 are connected together.

Exemplarily, the top end of the boom 13 has a sixth pulley 132, the fourth pulley 123 and the sixth pulley 132 each include a plurality of pulley bodies, and the driving rope 14 passes through the pulley body and the sixth pulley body in sequence through the fourth pulley 123. In the pulley body of the pulley 132, the sixth pulley 132 functions as a moving pulley, so that manpower can be effectively saved.

That is to say, the second end of the driving rope 14 is slidably inserted through one pulley body of the fourth pulley 123, one pulley body of the sixth pulley 132, the other pulley body of the fourth pulley 123, the sixth pulley The other pulley body of 132 and so on are analogous, and manpower can be effectively saved by using the driving rope 14 in cooperation with the plurality of pulley bodies of the fourth pulley 123 and the sixth pulley 132 .

Exemplarily, a third bracket 126 is arranged on the rotating column 12 , and a plurality of pulley bodies of the fourth pulley 123 are arranged on the third bracket 126 at intervals.

Exemplarily, for the boom 13 to perform a pitching motion, when the driving rope winch of the rotating column 12 is driven by the motor to rotate forward, the driving rope 14 can be recovered, that is, the boom 13 is rotated counterclockwise, thereby reducing the The angle of inclination in the vertical direction. Similarly, when the driving rope winch driven by the motor to rotate the column 12 is reversed, the driving rope 14 is released, that is, the boom 13 rotates clockwise, thereby increasing the inclination of the boom 13 in the vertical direction.

The structure of the counterweight frame 33 is described below:

FIG. 2 is a schematic structural diagram of a counterweight frame provided by an embodiment of the present disclosure. As shown in FIG. 2 , the counterweight frame 33 includes a guide plate 331 and a counterweight plate 332 for placing the counterweight block 100 , the guide plate 331 and the counterweight The plates 332 are vertical and connected together, the guide plate 331 is movably mounted on the rotating column 12 , and the second end of the second rope 32 is connected with the top of the guide plate 331 .

In the above embodiment, the guide plate 331 plays a guiding role during the up and down movement of the counterweight frame 33 , and the counterweight plate 332 is used for arranging various counterweight blocks 100 .

It should be noted that under different inclination angles of the boom 13, the moment arm of the boom 13 is different, so that the required mass of the counterweight 100 is different, and the weight of the boom 13 of different models is different, so that all the The required mass of the counterweight 100 is also different.

Therefore, in this embodiment, different counterweight blocks 100 or a plurality of counterweight blocks 100 can be placed on the counterweight plate 332 , so that the counterweight block 100 can be adapted to different types of booms 13 and the same type of boom 13 . different inclination angles.

In this embodiment, opposite sides of the guide plate 331 and the counterweight plate 332 are welded together.

In the above embodiment, the welding connection can increase the connection strength of the guide plate 331 and the weight plate 332, thereby increasing the service life.

Exemplarily, the guide plate 331 and the weight plate 332 may be composite steel plates.

Optionally, guide wheels 3311 are provided on the outer edge of the guide plate 331 , guide rails 121 are provided on the outer wall of the rotating column 12 , and the guide wheels 3311 are in rolling fit with the guide rails 121 .

In the above embodiment, through the cooperation of the guide wheel 3311 and the guide rail 121, the frictional force received by the guide plate 331 during the sliding process can be reduced, so that the force of the counterweight 100 on the boom 13 can be increased, and the boom 13 can be lowered. The energy expended to perform the pitch motion.

Exemplarily, the outer edge of the guide plate 331 has a guide wheel frame 3312 on which the guide wheel 3311 is located.

In the above-mentioned embodiment, the guide wheel frame 3312 plays a role of connecting the guide plate 331 and the guide wheel 3311 to facilitate the rolling of the guide wheel 3311 .

Exemplarily, the guide plate 331 is a square structure, and two guide wheels 3311 are arranged on the left and right sides of the guide plate 331 at intervals, so that the four guide wheels 3311 can effectively ensure the smooth sliding of the guide plate 331 . In other embodiments of the present disclosure, the number of the guide wheels 3311 may be 8, which is not limited in the present disclosure.

In this embodiment, the guide rail 121 includes two rail bodies 1211 and two sets of support shaft groups 1222 (see FIG. 1 ). The two rail bodies 1211 are arranged in parallel and spaced apart and both extend along the axis of the rotating column 12 . The shaft group 1222, the support shaft group 1222 includes two support shafts 1223, one end of the two support shafts 1223 is arranged perpendicular to the axis of the rotating column 12, and the other end of one support shaft 1223 is connected with one side of a rail body 1211. , the other end of the other support shaft 1223 is connected with the other side of the one rail body 1211, so that the rail body 1211 and the rotating column 12 are arranged at intervals to avoid friction caused by the guide plate 331 contacting the rotating column 12 during the sliding process force increase problem.

Exemplarily, the rail body 1211 and the support shaft 1223 are connected together by bolts.

In the above-mentioned embodiment, the bolt connection facilitates disassembly and assembly of the rail body 1211 , thereby facilitating maintenance and replacement of the rail body 1211 .

Optionally, the counterweight plate 332 has an insertion rod 3321 for inserting the assembled weight 100, the insertion rod 3321 is perpendicular to the counterweight plate 332, and the insertion rod 3321 is located in the middle of the counterweight plate 332, and the top of the insertion rod 3321 has The locking piece 3322 for locking the counterweight 100 .

In the above embodiment, the counterweight 100 can be sleeved on the insertion rod 3321, so as to prevent the counterweight 100 from detaching from the counterweight plate 332 during the up and down movement. The locking member 3322 has a locking effect on the counterweight 100 in the axial direction of the insertion rod 3321 .

Exemplarily, a plurality of counterweight blocks 100 can be inserted on the insertion rod 3321 , so that the total weight of the counterweight blocks 100 can be adjusted to adapt to different types of booms 13 and different inclination angles of the same type of boom 13 .

It should be noted that each of the counterweight blocks 100 is provided with a through hole equal to the outer diameter of the insertion rod 3321 , so that the counterweight block 100 can be stably fitted on the insertion rod 3321 .

In this embodiment, the insertion rod 3321 and the weight plate 332 are welded and connected together, thereby increasing the connection strength of the two.

Continuing to refer to FIG. 2 , the locking member 3322 includes a circular ring 3323 and a plurality of handles 3324 , the circular ring 3323 is threadedly assembled on the insertion rod 3321 , and the plurality of handles 3324 are circumferentially spaced along the outer wall of the circular ring 3323 .

In the above embodiment, the threaded engagement of the ring 3323 with the insertion rod 3321 can limit the position of the counterweight 100 , and the handle 3324 is convenient for adjusting the axial position of the ring 3323 on the insertion rod 3321 .

Exemplarily, when the counterweight 100 needs to be replaced, the handle 3324 is first driven to rotate around the insertion rod 3321 by an external force, until the ring 3323 is disengaged from the top of the insertion rod 3321 . Next, the old counterweight 100 is removed from the top of the insertion rod 3321 , and a new counterweight 100 is fitted on the insertion rod 3321 . Finally, put the ring 3323 on the top of the insertion rod 3321, and drive the handle 3324 to rotate until the bottom of the ring 3323 is in contact with the new counterweight 100, so that the new counterweight 100 is firmly clamped to the counterweight Between the plate 332 and the ring 3323.

Exemplarily, the number of handles 3324 is 4, and the 4 handles 3324 are arranged in a cross shape, so as to facilitate the driving of the ring 3323 at different angles. In other embodiments of the present disclosure, the number of handles 3324 may also be 6 or 8, which is not limited in the present disclosure.

It should be noted that the handle 3324 can also be used with a wrench, thereby extending the length of the handle 3324 and increasing the force arm of the rotating ring 3323, thereby saving manpower.

Optionally, the weight frame 33 further includes a connecting rod 333 , one end of the connecting rod 333 is connected with the middle part of the guide plate 331 , and the other end of the connecting rod 333 is connected with the middle part of the weight plate 332 .

In the above embodiment, the connecting rod 333 serves to connect the guide plate 331 and the counterweight plate 332 to avoid the problem that the counterweight plate 332 is deformed or broken due to the excessive mass of the counterweight block 100 .

Exemplarily, a connecting rod 333 is arranged on each of the left and right sides of the guide plate 331 , so as to further increase the connection strength between the guide plate 331 and the counterweight plate 332 . In addition, the connecting rod 333 can be a high-strength composite steel shaft, thereby effectively improving its own structural strength and ensuring the safety performance of the counterweight frame 33 .

Referring again to FIG. 1 , the base column 11 and the rotating column 12 are connected together by a slewing bearing 200 .

In the above embodiment, the slewing bearing 200 facilitates the rotation of the rotating column 12 on the base column 11 , which can effectively reduce the frictional force received when the rotating column 12 rotates.

Exemplarily, the bottom end of the rotating column 12 is connected with the outer ring of the slewing bearing 200 , and the top end of the base column 11 is connected with the inner ring of the slewing bearing 200 .

Exemplarily, a rotating shaft 127 is inserted on the outer peripheral wall of the bottom end of the rotating column 12 , and the bottom end of the boom 13 is sleeved on the rotating shaft 127 .

In the above embodiment, the rotating shaft 127 facilitates the rotation of the boom 13, thereby reducing the frictional force received by the boom 13 during the pitching motion.

The working principle of the crane provided by the present disclosure is briefly described below:

The first end of the first rope 22 is connected with the rope winch of the rotating column 12, and the second end of the first rope 22 is connected with the hook 21 through the top of the boom 13, so that it can pass through the hook on the rotating column 12. The rope winch retracts the first rope 22 to realize the lifting movement of the heavy object. The bottom end of the rotating column 12 is rotatably coaxially located on the top end of the base column 11, and the bottom end of the boom 13 is hinged on the rotating column 12, so that the rotating column 12 can be rotated to realize the rotation of the boom 13, thereby realizing the Transport of heavy objects. In addition, the first end of the driving rope 14 is connected with the driving rope winch on the rotating column 12, and the second end of the driving rope 14 is connected with the top end of the boom 13, which can be realized by the driving rope winch on the rotating column 12. The retraction and retraction of the driving rope 14 can realize the adjustment of the inclination angle of the boom 13 .

Further, the first pulley 31 is located at the top end of the rotating column 12 and protrudes from the rotating column 12, the first end of the second rope 32 is connected with the top end of the boom 13, and the second end of the second rope 32 passes through The first pulley 31 is connected with the counterweight frame 33 , and the counterweight frame 33 is slidably located on the outer wall of the rotary column 12 along the axial direction of the rotary column 12 . Then, when the inclination angle of the boom 13 needs to be changed, the self-gravity of the counterweight 100 on the counterweight frame 33 can be used to assist the change of the inclination angle of the boom 13, so that the rotation of the boom 13 is more labor-saving, thereby The inclination angle adjustment of the boom 13 can be completed so that the driving rope winch consumes less energy, thereby greatly reducing the energy consumption.

That is to say, with the crane provided by the present disclosure, the counterweight block 100 can be placed on the counterweight frame 33, so that part of the weight of the boom 13 can be offset, so that the boom 13 can provide less energy consumption during the pitching motion. The adjustment of the inclination angle is completed, thereby greatly reducing the production cost of the crane.

The above are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within the range.

Claims (10)

1. A crane, characterized in that the crane comprises a main body component (1), a hook component (2) and a counterweight component (3);

the main body assembly (1) comprises a base column (11), a rotating column (12), a suspension arm (13) and a driving rope (14), the bottom end of the rotating column (12) is rotatably and coaxially positioned on the top end of the base column (11), the bottom end of the suspension arm (13) is hinged on the rotating column (12), the first end of the driving rope (14) is connected with a driving rope winch on the rotating column (12), and the second end of the driving rope (14) is connected with the top end of the suspension arm (13);

the lifting hook assembly (2) comprises a lifting hook (21) and a first rope (22), wherein the first end of the first rope (22) is connected with a rope winch on the rotating column (12), and the second end of the first rope (22) penetrates through the top end of the lifting arm (13) to be connected with the lifting hook (21);

the counterweight component (3) comprises a first pulley (31), a second rope (32) and a counterweight frame (33) for placing a counterweight block (100), the first pulley (31) is positioned at the top end of the rotating column (12), the first pulley (31) protrudes out of the peripheral wall of the rotating column (12), the first end of the second rope (32) is connected with the top end of the suspension arm (13), the second end of the second rope (32) passes through the first pulley (31) and is connected with the counterweight frame (33), and the counterweight frame (33) is axially slidably positioned on the outer wall of the rotating column (12) along the rotating column (12).

2. A crane according to claim 1, wherein the weight rack (33) comprises a guide plate (331) and a weight plate (332) for resting the counterweight (100), the guide plate (331) and the weight plate (332) being perpendicular and connected together, the guide plate (331) being movably mounted on the rotation column (12), the second end of the second rope (32) being connected together with the top of the guide plate (331).

3. A crane according to claim 2, wherein the guide plate (331) has guide wheels (3311) on its outer edge, and the rotation column (12) has guide rails (121) on its outer wall, the guide wheels (3311) being in rolling engagement with the guide rails (121).

4. The crane according to claim 2, wherein the weight plate (332) is provided with an insert rod (3321) for inserting the counterweight (100), the insert rod (3321) is perpendicular to the weight plate (332), the insert rod (3321) is positioned in the middle of the weight plate (332), and the top end of the insert rod (3321) is provided with a locking member (3322) for locking the counterweight (100).

5. The crane of claim 4, wherein the locking member (3322) comprises a ring (3323) and a plurality of handles (3324), the ring (3323) being threadably mounted on the plunger (3321), the plurality of handles (3324) being circumferentially spaced along an outer wall of the ring (3323).

6. A crane according to claim 2, wherein the weight frame (33) further comprises a connecting rod (333), one end of the connecting rod (333) is connected to a middle portion of the guide plate (331), and the other end of the connecting rod (333) is connected to a middle portion of the weight plate (332).

7. A crane according to any one of claims 1-6, characterized in that the counterweight assembly (3) further comprises a second pulley (34), which second pulley (34) is located on the boom (13) near the top end, and that the first end of the second rope (32) is connected to the second pulley (34).

8. A crane according to any one of claims 1-6, characterized in that the top of the weight rack (33) has a connection rack (3325), and the second end of the second rope (32) is located on the connection rack (3325).

9. A crane according to any one of claims 1-6, characterized in that the rotating column (12) is provided with a third pulley (122), through which third pulley (122) the first end of the first rope (22) is connected to the rope winch of the rotating column (12).

10. A crane according to any one of claims 1-6, characterized in that the column (12) is provided with a fourth pulley (123), through which fourth pulley (123) the first end of the drive line (14) is connected to the drive line winch on the column (12).

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