Self-adjusting counterweight system and ship unloader with same

Abstract

The application relates to the technical field of ship unloading equipment, and discloses a self-adjusting counterweight system and a chain bucket ship unloader, wherein the self-adjusting counterweight system comprises a rack, a first arm frame rotatably arranged at one side of the rack and adapted to be provided with a material taking mechanism, a second arm frame arranged at the other side of the rack and having the other end inclined towards a direction away from the ground, a luffing mechanism comprising a luffing traction rope, a luffing driving unit and a luffing pulley assembly, the luffing traction rope being connected with the first arm frame and the luffing driving unit through the luffing pulley assembly, the luffing driving unit being arranged on the second arm frame and used for driving the first arm frame to luff so as to switch between a working state and a non-working state, and a self-adjusting counterweight mechanism comprising a counterweight traction rope, a counterweight pulley assembly and a counterweight piece. When the luffing mechanism drives the first arm frame to switch between the working state and the non-working state, the counterweight piece slides along the second arm frame, and the automatic balance of the overturning moment is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unloading equipment, in particular to a self-adjusting counterweight system and a chain bucket unloader. BACKGROUND

[0002] The chain bucket unloader is a special machine which uses continuous conveying machine to make a machine head capable of lifting bulk materials, or has self-taken material capacity, or is equipped with a material taking and feeding mechanism, to continuously take bulk materials out of the ship cabin, and then unload them to the arm or frame and transport them to the shore conveyor system.

[0003] The material taking device for lifting materials of the chain bucket unloader is generally arranged on the arm. Since the weight of the material taking device is large, and the material also needs to be lifted, the forces on both ends of the frame are unbalanced, the moment of the end where the material taking device is located is larger, and the structural stability of the frame is poor.

[0004] In order to balance the moment of the material taking device, the existing chain bucket unloader usually sets a counterweight on the side of the frame away from the material taking device. However, since the arm needs to be tilted in the actual use process to resist bad weather or avoid the wharf vessels. At this time, the center of gravity of the arm changes, while the center of gravity of the counterweight is fixed. Therefore, the forces on both ends of the frame are still unbalanced, and a large overturning moment occurs, resulting in poor overall structural stability. SUMMARY

[0005] Therefore, the present application provides a self-adjusting counterweight system and a chain bucket unloader to solve the problem of unbalanced forces on both ends of the frame and poor overall structural stability.

[0006] In a first aspect, the present application provides a self-adjusting counterweight system, comprising: a frame; a first arm arranged on one side of the frame and adapted to install a material taking mechanism; a second arm arranged on the other side of the frame opposite to the first arm; the other end of the second arm is inclined towards the direction away from the ground; a tilting mechanism comprising a tilting traction rope, a tilting driving unit and a tilting pulley assembly; the tilting pulley assembly is arranged on the top of the frame and the first arm; the tilting traction rope is connected to the first arm and the tilting driving unit through the tilting pulley assembly; the tilting driving unit is arranged on the second arm and used to drive the first arm to tilt to switch between working state and non-working state; a self-adjusting counterweight mechanism comprising a counterweight traction rope, a counterweight pulley assembly and a counterweight; the counterweight pulley assembly is arranged on the top of the frame; the counterweight is slidably arranged on the second arm; and the counterweight traction rope is connected to the counterweight and the first arm through the counterweight pulley assembly.

[0007] Beneficial effects: The first arm frame of the application keeps horizontal in the working state, facilitating the material taking mechanism to take materials. In the non-working state, the first arm frame is lifted upward by the pitching mechanism to reduce the influence of bad weather on the first arm frame or to avoid ships, personnel, etc. One end of the second arm frame is inclined toward the direction away from the ground. When not subjected to external force, the counterweight slides downward along the second arm frame under the action of gravity, automatically adjusting the position of the gravity center, without the need for an additional power source, and with low use cost. When the pitching mechanism drives the first arm frame to switch between the working state and the non-working state, the counterweight can automatically slide along the second arm frame according to the pitching position of the first arm frame, realizing dynamic balance of the overturning moment with the first arm frame, without adding an additional reverse moment to the frame, ensuring that the frame bears a smaller load and is stable in structure.

[0008] In an alternative embodiment, the pitching pulley assembly comprises a first pulley set, a second pulley set, a third pulley set and a fourth pulley set; the first pulley set is arranged at the top of the frame towards the second arm frame, the second pulley set and the third pulley set are arranged on the top of the frame towards the first arm frame on the upper and lower sides, and the fourth pulley set is arranged at the first arm frame away from the frame; one end of the pitching traction rope is arranged at the pitching driving unit, sequentially passes through the first pulley set, the second pulley set, the third pulley set and the fourth pulley set, reverses at the fourth pulley set, and then passes through the third pulley set, the second pulley set and the first pulley set to be connected with the pitching driving unit.

[0009] Beneficial effects: The rotation of the pitching driving unit can drive the pitching traction rope to act, and under the reversing and supporting of the pitching pulley assembly, pull the first arm frame to pitch upward, with simple structure and convenient use.

[0010] In an alternative embodiment, two pitching driving units are arranged, and the two pitching driving units operate synchronously; the two ends of the pitching traction rope pass through the first pulley set, the second pulley set, the third pulley set and the fourth pulley set, and are connected with the two pitching driving units.

[0011] Beneficial effects: By arranging two sets of pitching driving units, the pitching traction rope can be evenly distributed on both sides of the frame, and branched from the counterweight traction rope, avoiding interference between the pitching traction rope and the counterweight traction rope.

[0012] In an alternative embodiment, the counterweight pulley assembly comprises a fifth pulley set arranged at the counterweight; the counterweight traction rope sequentially passes through the fifth pulley set, the first pulley set, the second pulley set and the third pulley set, and is connected with the counterweight and the first arm frame, respectively.

[0013] Beneficial effects: The self-adjusting counterweight mechanism can share some pulleys in the pitch pulley assembly. That is, the first pulley set, the second pulley set, and the third pulley set are provided with multiple pulleys, some of which are used for the self-adjusting counterweight mechanism and some of which are used for the pitch mechanism, so as to reduce the installation volume of each pulley set, facilitate the installation of the counterweight traction rope and the pitch traction rope, reduce the use cost, and facilitate use.

[0014] In an alternative embodiment, the self-adjusting counterweight mechanism is provided with two sets and is symmetrically installed on both sides of the frame along the length direction of the first arm frame; the two sets of counterweight members are integrally provided.

[0015] Beneficial effects: By providing two sets of self-adjusting counterweight mechanisms and symmetrically installing them on both sides of the frame along the length direction of the first arm frame, the stress on the frame and the first arm frame can be more balanced. When one set of self-adjusting counterweight mechanisms fails or needs maintenance, the other set of self-adjusting counterweight mechanisms can continue to be used, thereby increasing the fault tolerance of the automatic adjusting balance system.

[0016] In an alternative embodiment, the self-adjusting counterweight system further comprises a sleeve frame and a lifting mechanism; the sleeve frame is sleeved outside the frame and is slidably connected to the frame through the lifting mechanism; the first arm frame and the second arm frame are respectively arranged on opposite sides of the sleeve frame; one end of the first arm frame is rotatably connected to the sleeve frame; and the end of the second arm frame away from the sleeve frame is inclined towards the direction away from the ground.

[0017] Beneficial effects: The sleeve frame and the lifting mechanism can realize the up-and-down movement of the first arm frame and the second arm frame, and simultaneously drive the material taking mechanism on the first arm frame to move up and down, so as to dig materials at different heights.

[0018] In an alternative embodiment, at least one side surface of the sleeve frame facing the frame is provided with a support wheel, and the frame is provided with a track corresponding to the support wheel; the lifting mechanism comprises a lifting traction rope, a lifting pulley assembly, and a lifting driving unit; the lifting driving unit is fixed on the side of the frame away from the first arm frame; the lifting pulley assembly is arranged on the top of the frame; and the two ends of the lifting traction rope are respectively connected to the sleeve frame and the lifting driving unit through the lifting pulley assembly.

[0019] Beneficial effects: The sleeve frame relatively slides on the track of the frame through the support wheel, which can reduce the abrasion between the sleeve frame and the frame. After the self-adjusting counterweight system balances the overturning moment of the first arm frame, the pressure borne by the support wheel is also reduced, thereby improving the safety of the support wheel and the frame.

[0020] In an alternative embodiment, the second arm frame is hinged to the frame.

[0021] Beneficial effects: The second arm frame is hinged to the frame, which facilitates the adjustment of the inclination angle of the second arm frame.

[0022] In an alternative embodiment, the self-adjusting counterweight system further comprises a roller and a supporting rail; the supporting rail is arranged on the lower surface of the second arm frame; the roller is installed in the supporting rail and rotatably connected with the second arm frame.

[0023] Beneficial effects: the roller moves along the length direction of the second arm frame in the supporting rail under the gravity of the counterweight, so that the counterweight can move horizontally relative to the second arm frame. The supporting rail can play the guiding role of the roller and the supporting role of the counterweight.

[0024] In a second aspect, the present application further provides a ship unloader, comprising: a running trolley, a material taking mechanism, a rotating mechanism and the self-adjusting counterweight system; the running trolley is arranged on the first arm frame and can move along the length direction of the first arm frame; the material taking mechanism is installed on the running trolley and connected with the running trolley through the rotating mechanism.

[0025] Beneficial effects: when the luffing mechanism drives the first arm frame to switch between the working state and the non-working state, the counterweight slides along the second arm frame to realize the dynamic balance of the overturning moment with the first arm frame, and the structure is stable. In addition, the running trolley can drive the material taking mechanism to move horizontally along the first arm frame, the rotating mechanism can drive the material taking mechanism to rotate in the vertical direction, and the lifting mechanism can drive the material taking mechanism to move up and down, so that the material taking mechanism can take materials in different directions in the ship cabin, the position adjustment mode of the material taking mechanism is simple, convenient to operate and low in use cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0027] Figure 1 is a structural schematic diagram of the self-adjusting counterweight system in the working state of the embodiment of the present application;

[0028] Figure 2 is a structural schematic diagram of the self-adjusting counterweight system in the non-working state of the embodiment of the present application;

[0029] Figure 3 is a structural schematic diagram of the luffing mechanism and the self-adjusting counterweight mechanism of the embodiment of the present application;

[0030] Figure 4 is a partial top view of the sleeve frame of the embodiment of the present application.

[0031] Explanation of reference signs:

[0032] 1, rack; 2, first arm frame; 3, material taking mechanism; 4, second arm frame; 501, luffing traction rope; 502, luffing driving unit; 503, first pulley block; 504, second pulley block; 505, third pulley block; 506, fourth pulley block; 507, support shaft; 508, reversing pulley; 601, counterweight traction rope; 602, counterweight; 603, fifth pulley block; 7, sleeve frame; 8, support wheel; 9, roller; 10, running trolley; 11, slewing mechanism; 12, machine room. DETAILED DESCRIPTION

[0033] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0034] The embodiments of the present application aim at the problem that the fixedly installed counterweight cannot effectively balance the overturning moment of the arm frame in the luffing state, resulting in uneven force on both ends of the rack and poor overall structural stability, and propose that the counterweight is slidably arranged on the second arm frame, and the second arm frame is upwardly inclined, so that when the first arm frame is driven upward by the luffing mechanism, the counterweight slides along the second arm frame to dynamically balance the overturning moment of the first arm frame, and the structure is stable and safe.

[0035] The embodiments of the present application will be described below in combination with Figures 1 to 4 .

[0036] According to the embodiments of the present application, on one hand, a self-adjusting counterweight system is provided, mainly comprising a rack 1, a first arm frame 2, a second arm frame 4, a luffing mechanism and a self-adjusting counterweight mechanism. One end of the first arm frame 2 is rotatably arranged on one side of the rack 1 and is adapted to install a material taking mechanism 3. One end of the second arm frame 4 is arranged on the other side of the rack 1 opposite to the first arm frame 2, and the other end is inclined towards the direction away from the ground. The luffing mechanism comprises a luffing traction rope 501, a luffing driving unit 502 and a luffing pulley assembly. The luffing pulley assembly is arranged at the top of the rack 1 and at the first arm frame 2. The luffing traction rope 501 is connected to the first arm frame 2 and the luffing driving unit 502 through the luffing pulley assembly respectively. The luffing driving unit 502 is arranged on the second arm frame 4 and is used to drive the first arm frame 2 to luff to switch between the working state and the non-working state. The self-adjusting counterweight mechanism comprises a counterweight traction rope 601, a counterweight pulley assembly and a counterweight 602. The counterweight pulley assembly is arranged at the top of the rack 1. The counterweight 602 is slidably arranged on the second arm frame 4. The counterweight traction rope 601 is connected to the counterweight 602 and the first arm frame 2 through the counterweight pulley assembly respectively.

[0037] The first arm frame 2 of the embodiment of the present application remains horizontal in the working state, facilitating the material taking mechanism 3 to take material. In the non-working state, the first arm frame 2 is driven upward by the tilting mechanism to reduce the influence of bad weather on the first arm frame 2 or to avoid ships, personnel, etc. The second arm frame 4 is inclined toward the direction away from the ground, and under the action of gravity, the counterweight 602 slides downward along the second arm frame 4 to automatically adjust its position without an additional power source, thus being low in use cost. When the tilting mechanism drives the first arm frame 2 to switch between the working state and the non-working state, the counterweight 602 can automatically slide along the second arm frame 4 according to the tilting position of the first arm frame 2 to realize dynamic balance of the overturning moment of the first arm frame 2, thus not adding an additional reverse moment to the frame 1, ensuring that the load borne by the frame 1 is at a small value and the structure is stable.

[0038] Specifically, the upper surface of one end of the first arm frame 2 is hinged to one side surface of the frame 1 through a hinge shaft to realize rotatable connection. As shown in Figure 1 When the first arm frame 2 is horizontally placed, it is in the working state, and the material taking mechanism 3 normally takes material. The side surface of the first arm frame 2 abuts against the side surface of the frame 1, so that when the first arm frame 2 is horizontally placed, it is in the limit position of tilting downward. At this time, the counterweight 602 is located at the end of the first arm frame 2 away from the frame 1.

[0039] In addition, as shown in Figure 2 The limit position of tilting upward of the first arm frame 2 is the non-working state of the first arm frame 2. The tilting driving unit 502 can drive the tilting traction rope 501 to move and pull the first arm frame 2 to tilt upward or relax the tilting traction rope 501 under the action of gravity of the first arm frame 2, so that the first arm frame 2 tilts downward, thereby realizing switching between the working state and the non-working state of the first arm frame 2.

[0040] Further, the tilting traction rope 501 and the counterweight traction rope 601 can be steel wire ropes. Of course, the materials of the tilting traction rope 501 and the counterweight traction rope 601 can also be selected as any other structures and materials according to actual needs, and the embodiment does not make too many limitations thereon. The tilting driving unit 502 can be a conventional driving unit such as a winding drum, a winch, a driving motor, etc. according to needs.

[0041] In one embodiment, as shown in Figures 1 to 3As shown, the pitch pulley assembly includes a first pulley group 503, a second pulley group 504, a third pulley group 505, and a fourth pulley group 506. The first pulley group 503 is located at the top of the frame 1 facing the second boom 4. The second pulley group 504 and the third pulley group 505 are located on the upper and lower sides of the top of the frame 1 facing the first boom 2. Specifically, the second pulley group 504 and the third pulley group 505 are arranged at an angle and are located at the two end faces of the top of the frame 1, respectively, for reversing and supporting the pitch traction rope 501. A support shaft 507 is provided on the first boom 2. The fourth pulley group 506 is located on the first boom 2 away from the frame 1 via the support shaft 507. The support shaft 507 is fixed to the first boom 2. The fourth pulley group 506 is fixed relative to the first boom 2 and can pitch with the first boom 2, serving as a movable pulley group.

[0042] One end of the pitch traction rope 501 is fixed to the pitch drive unit 502, and sequentially passes through the first pulley group 503, the second pulley group 504, the third pulley group 505, and the fourth pulley group 506. After changing direction at the fourth pulley group 506, it passes through the third pulley group 505, the second pulley group 504, and the first pulley group 503 again to connect with the pitch drive unit 502. The rotation of the pitch drive unit 502 can drive the pitch traction rope 501 to move, and with the changing direction and support of the first pulley group 503, the second pulley group 504, the third pulley group 505, and the fourth pulley group 506, it pulls the first boom 2 to pitch upward. The structure is simple and easy to use.

[0043] To improve the support performance of the pitch traction rope 501 and facilitate its reversal. For example... Figure 3 As shown, two reversing pulleys 508 are also provided between the fourth pulley block 506 and the third pulley block 505. Both reversing pulleys 508 are fixed to the frame 1. The axis of the reversing pulleys 508 is perpendicular to the axis of the fourth pulley block 506.

[0044] In one embodiment, two pitch drive units 502 are provided, and the two pitch drive units 502 operate synchronously. The two ends of the pitch traction rope 501 pass through the first pulley block 503, the second pulley block 504, the third pulley block 505, and the fourth pulley block 506, respectively, and are connected to the two pitch drive units 502. By providing two sets of pitch drive units 502, the pitch traction rope 501 can be evenly distributed on both sides of the frame 1 and branched off from the counterweight traction rope 601, avoiding mutual interference between the pitch traction rope 501 and the counterweight traction rope 601.

[0045] In one embodiment, a machine room 12 is located at the end of the second boom 4 away from the frame 1. The pitch drive unit 502 is fixed inside the machine room 12. The machine room 12 can also house reducers, controllers, and other structures, saving installation space through integrated design.

[0046] In one embodiment, as shown in Figure 3 The counterweight pulley assembly includes a fifth pulley set 603 fixedly installed on the upper end of the counterweight 602. The counterweight traction rope 601 is sequentially wound around the fifth pulley set 603, the first pulley set 503, the second pulley set 504, and the third pulley set 505, which are respectively connected with the counterweight 602 and the support shaft 507 on the first arm frame 2. The self-adjusting counterweight mechanism can share some pulleys in the luffing pulley assembly. That is, the first pulley set 503, the second pulley set 504, and the third pulley set 505 are provided with multiple pulleys, some of which are used for the self-adjusting counterweight mechanism, and some of which are used for the luffing mechanism. This can reduce the installation volume of each pulley set, facilitate the installation of the counterweight traction rope 601 and the luffing traction rope 501, reduce the use cost, and be beneficial to use.

[0047] In other embodiments, the counterweight pulley assembly can also be provided with other pulley sets one by one at the first pulley set 503, the second pulley set 504, and the third pulley set 505, respectively. In this way, the counterweight pulley assembly and the luffing pulley assembly can operate independently and do not interfere with each other.

[0048] In one embodiment, as shown in Figure 3 The self-adjusting counterweight mechanism is provided with two sets and symmetrically installed on both sides of the rack 1 along the length direction of the first arm frame 2. The counterweights 602 of the two sets of self-adjusting counterweight mechanisms are integrally provided. By providing two sets of self-adjusting counterweight mechanisms and symmetrically installing them on both sides of the rack 1 along the length direction of the first arm frame 2, the stress on the rack 1 and the first arm frame 2 can be more balanced. When one set of self-adjusting counterweight mechanisms fails or needs maintenance, the other set of self-adjusting counterweight mechanisms can continue to be used, thereby increasing the fault tolerance of the automatic adjusting balance system.

[0049] In one embodiment, the self-adjusting counterweight system further includes a sleeve rack 7 and a lifting mechanism (not shown in the figure). The sleeve rack 7 is sleeved on the outside of the rack 1 and slidably connected with the rack 1 through the lifting mechanism. The first arm frame 2 and the second arm frame 4 are respectively arranged on opposite sides of the sleeve rack 7. One end of the first arm frame 2 is rotatably connected with the sleeve rack 7. The end of the second arm frame 4 away from the sleeve rack 7 is inclined towards the direction away from the ground. The sleeve rack 7 and the lifting mechanism can realize the up-down movement of the first arm frame 2 and the second arm frame 4, and drive the material taking mechanism 3 on the first arm frame 2 to move up and down, so as to dig materials at different heights.

[0050] In addition, in the present embodiment, the first pulley set 503 can also be arranged at the top of the sleeve rack 7 towards the second arm frame 4. The second pulley set 504 and the third pulley set 505 are arranged on the top of the sleeve rack 7 towards the first arm frame 2 on the upper and lower sides.

[0051] In one embodiment, the support wheels 8 are arranged on at least one side of the housing 7, and the housing 1 is provided with a track corresponding to the support wheels 8. The lifting mechanism comprises a lifting traction rope, a lifting pulley assembly and a lifting drive unit. The lifting drive unit is fixed on the side of the housing 1 away from the first arm frame 2. The lifting pulley assembly is arranged on the top of the housing 1. The two ends of the lifting traction rope are connected to the housing 7 and the lifting drive unit through the lifting pulley assembly, respectively. The arrangement of the components of the lifting mechanism can refer to the arrangement of the pitching mechanism, and other existing arrangement forms can also be selected according to the needs. The specific arrangement can be set according to the actual needs, and the embodiment does not make too many limitations on this.

[0052] The relative sliding of the housing 7 on the track of the housing 1 through the support wheels 8 can reduce the abrasion caused by the sliding between the housing 7 and the housing 1. After balancing the overturning moment of the first arm frame 2, the self-adjusting counterweight system can also reduce the pressure borne by the support wheels 8, thereby improving the safety of the support wheels 8 and the housing 1.

[0053] Specifically, as shown in Figure 4 The four corners of the upper and lower ends of the housing 7 are each provided with two groups of support wheels 8, so as to jointly bear the overturning moment of the housing 7 and improve the structural stability of the housing 7.

[0054] In one embodiment, the second arm frame 4 is hinged to the housing 1, so as to facilitate the adjustment of the inclination angle of the second arm frame 4. Specifically, one end of the second arm frame 4 is hinged to the housing 1. The second arm frame 4 is also connected to the housing 7 through an adjusting traction rope. By controlling the length of the adjusting traction rope, the inclination angle of the second arm frame 4 can be adjusted.

[0055] For example, an adjusting reel is arranged on the top of the housing 1. One end of the adjusting traction rope is fixedly connected to the adjusting reel, and the other end is fixedly connected to the second arm frame 4. By reversing the adjusting reel, the length of the adjusting traction rope can be controlled, and the inclination angle of the second arm frame 4 can be controlled.

[0056] In one embodiment, the self-adjusting counterweight system further comprises a roller 9 and a support rail (not shown in the figure). The support rail is arranged on the lower surface of the second arm frame 4. The roller 9 is installed in the support rail and rotatably connected to the second arm frame 4. The roller 9 is acted on by the gravity of the counterweight 602 and moves in the length direction of the second arm frame 4 in the support rail, so that the counterweight 602 can move horizontally relative to the second arm frame 4. The support rail can play the guiding role of the roller 9 and the supporting role of the counterweight 602.

[0057] The working process of the embodiment of the application is as follows:

[0058] Switching from the working state to the non-working state: the pitch driving unit 502 rotates forward, driving the pitch traction rope 501 to move. The pitch traction rope 501 is reversed through the first pulley set 503, the second pulley set 504, and the third pulley set 505, and then pulls the first arm frame 2 to rotate upward around the hinge between the first arm frame 2 and the rack 1, to the limit position of the upward rotation of the first arm frame 2. At the same time, the counterweight traction rope 601 is loosened, and the counterweight 602 moves downward along the second arm frame 4 under the action of gravity, gradually approaching the rack 1.

[0059] Switching from the non-working state to the working state: the pitch driving unit 502 reverses, driving the pitch traction rope 501 to be loosened, and the first arm frame 2 rotates downward around the hinge between the first arm frame 2 and the rack 1 under the action of its own weight, to the limit position of the downward rotation of the first arm frame 2, i.e. the first arm frame 2 is in a horizontal position. The first arm frame 2 pulls the counterweight traction rope 601 to pull the counterweight 602 to the end of the second arm frame 4 away from the rack 1.

[0060] According to an embodiment of the present application, in another aspect, a bucket ship unloader is also provided, comprising a running trolley 10, a material taking mechanism 3, a rotating mechanism 11, and the self-adjusting counterweight system described above. The running trolley 10 is arranged on the first arm frame 2 and can move along the length direction of the first arm frame 2. The material taking mechanism 3 is installed on the running trolley 10 and connected with the running trolley 10 through the rotating mechanism 11. The running trolley 10, the material taking mechanism 3, and the rotating mechanism 11 can all adopt any existing structure, and the specific arrangement can be determined according to specific needs, which is not limited in the present embodiment.

[0061] In one embodiment, the self-adjusting counterweight system further comprises a sleeve frame 7 and a lifting mechanism. The sleeve frame 7 is sleeved outside the rack 1 and slidably connected with the rack 1 through the lifting mechanism. The first arm frame 2 and the second arm frame 4 are respectively arranged on opposite sides of the sleeve frame 7. The sleeve frame 7 is hingedly connected with the first arm frame 2 at the cantilever end. The end of the second arm frame 4 away from the sleeve frame 7 is inclined towards the direction away from the ground. The sleeve frame 7 and the lifting mechanism can realize the upward and downward movement of the first arm frame 2 and the second arm frame 4, and simultaneously drive the upward and downward movement of the material taking mechanism 3 on the first arm frame 2, so as to dig different height of materials. The first pulley set 503 can also be arranged at the top of the sleeve frame 7 towards the second arm frame 4. The second pulley set 504 and the third pulley set 505 are arranged at the top of the sleeve frame 7 towards the first arm frame 2 at the upper and lower sides.

[0062] In addition, the running trolley 10 can pass through the hinge point between the cantilever end and the first arm frame 2 and move horizontally on the cantilever end and the first arm frame 2. The cantilever end is provided with a parking position for parking the running trolley 10.

[0063] Before switching from the working state to the non-working state, the running trolley 10 drives the material taking mechanism 3 to move from the first arm support 2 to the parking position at the end of the cantilever. The luffing mechanism only drives the first arm support 2 to rotate, which can reduce the load of the luffing mechanism, reduce the use power of the luffing driving unit 502, and reduce the use cost.

[0064] When the luffing mechanism drives the first arm support 2 to switch between the working state and the non-working state, the counterweight 602 slides along the second arm support 4 to realize dynamic balance of the overturning torque with the first arm support 2, and the structure is stable. In addition, the running trolley 10 can drive the material taking mechanism 3 to move horizontally along the first arm support 2, the rotary mechanism 11 can drive the material taking mechanism 3 to rotate in the vertical direction, and the self-adjusting counterweight system can drive the material taking mechanism 3 to move up and down, so that the material taking mechanism 3 can take materials in different directions in the cabin. The position adjustment mode of the material taking mechanism 3 is simple, convenient to operate, and low in use cost.

[0065] To realize the basic function of the chain bucket ship unloader, the chain bucket ship unloader in the embodiment can also include other necessary modules or components, such as a controller, a wire, etc. It should be noted that the chain bucket ship unloader can include any suitable existing structure of other necessary modules or components. To clearly and simply illustrate the technical solutions provided by the embodiment, the above-mentioned parts will not be described in detail, and the accompanying drawings are also simplified. However, it should be understood that the embodiments of the present application are not limited in scope.

[0066] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A self-adjusting counterweight system, characterized by, The utility model relates to a kind of crane, including: Frame (1); First arm frame (2), one end rotatably arranged in the one side of the frame (1), suitable for installing material taking mechanism (3); Second arm frame (4), one end is arranged in the other side of the frame (1) opposite the first arm frame (2);The other end of the second arm frame (4) is inclined towards the direction away from ground; Pitch mechanism, including pitch traction rope (501), pitch drive unit (502) and pitch pulley assembly;The pitch pulley assembly is arranged at the top of the frame (1) and first arm frame (2);The pitch traction rope (501) is connected with the first arm frame (2) and the pitch drive unit (502) respectively by the pitch pulley assembly;The pitch drive unit (502) is arranged on the second arm frame (4), for driving the first arm frame (2) pitch, to switch between working state and non-working state; Self-adjusting counterweight mechanism, including counterweight traction rope (601), counterweight pulley assembly and counterweight (602);The counterweight pulley assembly is arranged at the top of the frame (1);The counterweight (602) is slidably arranged on the second arm frame (4);The counterweight traction rope (601) is connected with the counterweight (602) and the first arm frame (2) respectively by the counterweight pulley assembly; The self-adjusting counterweight system further includes sleeve frame (7) and lifting mechanism;The sleeve frame (7) is sleeved on the frame (1) outside, and is slidably matched with the frame (1) by the lifting mechanism;The first arm frame (2) and the second arm frame (4) are respectively arranged on the opposite sides of the sleeve frame (7);One end of the first arm frame (2) is rotatably connected with the sleeve frame (7); One end of the second arm frame (4) is hinged with the frame (1), and the second arm frame (4) is further connected with the sleeve frame (7) by adjusting traction rope, and the inclination angle of the second arm frame (4) can be adjusted by controlling the length of the adjusting traction rope.

2. The self-adjusting counterweight system of claim 1, wherein, The pitch pulley assembly includes first pulley set (503), second pulley set (504), third pulley set (505) and fourth pulley set (506);The first pulley set (503) is arranged at the top of the frame (1) towards the second arm frame (4), and the second pulley set (504) and the third pulley set (505) are arranged at the top of the frame (1) towards the first arm frame (2) on the upper and lower sides, and the fourth pulley set (506) is arranged away from the frame (1) at the first arm frame (2);One end of the pitch traction rope (501) is arranged in the pitch drive unit (502), and sequentially passes through the first pulley set (503), the second pulley set (504), the third pulley set (505) and the fourth pulley set (506), and reverses at the fourth pulley set (506), and then passes through the third pulley set (505), the second pulley set (504) and the first pulley set (503) and is connected with the pitch drive unit (502).

3. The self-adjusting counterweight system of claim 2, wherein, The two pitch driving units (502) are synchronously operated, and two ends of the pitch traction rope (501) are respectively wound around the first pulley set (503), the second pulley set (504), the third pulley set (505) and the fourth pulley set (506) and connected with the two pitch driving units (502).

4. The self-adjusting counterbalance system of claim 2, wherein, The counterweight pulley assembly comprises a fifth pulley set (603) arranged on the counterweight (602), and the counterweight traction rope (601) is sequentially wound around the fifth pulley set (603), the first pulley set (503), the second pulley set (504) and the third pulley set (505) and connected with the counterweight (602) and the first arm support (2) respectively.

5. The self-adjusting counterbalance system of claim 4, wherein, The self-adjusting counterweight mechanism is arranged in two groups and symmetrically installed on both sides of the frame (1) along the length direction of the first arm support (2), and the two groups of counterweights (602) are integrally arranged.

6. The self-adjusting counterweight system of any one of claims 1 to 5, wherein, At least one side of the sleeve frame (7) facing the frame (1) is provided with a support wheel (8), and the frame (1) is provided with a track corresponding to the support wheel (8); the lifting mechanism comprises a lifting traction rope, a lifting pulley assembly and a lifting driving unit; the lifting driving unit is fixed on the side of the frame (1) away from the first arm support (2); the lifting pulley assembly is arranged on the top of the frame (1); and two ends of the lifting traction rope are connected with the sleeve frame (7) and the lifting driving unit through the lifting pulley assembly respectively.

7. The self-adjusting counterweight system of any one of claims 1 to 5, wherein, The self-adjusting counterweight system further comprises a roller (9) and a support rail; the support rail is arranged on the lower surface of the second arm support (4); the roller (9) is installed in the support rail and rotatably connected with the second arm support (4).

8. A bucket unloader, characterized in that The self-adjusting counterweight system comprises: The running trolley (10), the material taking mechanism (3), the slewing mechanism (11) and the self-adjusting counterweight system according to any one of claims 1 to 7; the running trolley (10) is arranged on the first arm support (2) and can move along the length direction of the first arm support (2); the material taking mechanism (3) is installed on the running trolley (10) and connected with the running trolley (10) through the slewing mechanism (11).

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