Port crane with air volume detection and weighing alarm functions

Abstract

The invention relates to the field of hoisting equipment, and discloses a port crane with air volume detection and weighing alarm functions. Comprising a base, a tower frame installed on the base, a rotating table arranged on the tower frame, a tower top installed on the rotating table, an anemograph installed on the tower top, a hoisting arm hinged to the tower frame and a balance arm installed on the tower frame. The balance arm is formed by hinging a first balance arm body and a second balance arm body, the first balance arm body is installed on the tower, and track frames are installed on the inner side of the first balance arm body and the inner side of the second balance arm body. Compared with the prior art, the lifting device has the following advantages and effects that the balance arms are arranged to be of a two-section type, the first balance arm and the second balance arm are hinged to each other, and when the anemograph detects that wind power in the external environment is large, the control assembly is started to enable the lifting arm and the second balance arm to be folded downwards; and accidents caused by shaking of the lifting arm and the second balance arm due to excessive wind force are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to a port crane with wind volume detection and weighing alarm functions. Background Art

[0002] Crane is a mechanical equipment used to lift and move heavy objects. It is widely used in construction, manufacturing, ports, warehousing and other industries. The main function of a crane is to lift heavy objects from one place to another through various mechanical devices, usually vertical lifting and horizontal movement.

[0003] Since port cranes usually work in an open environment and are greatly affected by wind, windproof measures must be considered during design and operation. For example, the windproof tower crane for construction disclosed in Chinese patent CN105293299B can not only quickly install and remove the counterweight when a typhoon comes or other strong wind conditions, but also bend the boom and balance arm after the counterweight is removed to reduce the wind-exposed area and keep the center of gravity of the tower stable. However, the counterweight of this crane is prone to fall when the balance arm is bent, which poses a certain safety hazard. Therefore, we propose a port crane with wind volume detection and weighing alarm functions. Summary of the invention

[0004] The purpose of the invention is to provide a port crane with wind volume detection and weighing alarm functions, which has the effects of high wind resistance and high safety.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a port crane with wind volume detection and weighing alarm functions, comprising a base, a tower mounted on the base, a rotating table arranged on the tower, a tower top mounted on the rotating table, an anemometer mounted on the tower top, a lifting arm hinged on the tower, and a balancing arm mounted on the tower, wherein a lifting device is installed on the lifting arm, the balancing arm is formed by a first balancing arm and a second balancing arm being hinged to each other, the first balancing arm is installed on the tower, a track frame is installed on the inner side of the first balancing arm and the second balancing arm, a plurality of equally spaced teeth are installed on the inner side of the track frame, a plurality of movable plates are slidably arranged at the bottom of the track frame, a counterweight block is installed on the movable plate, a driving component for driving the movable plate to slide on the track frame is installed on the movable plate, a resist plate is also installed on the second balancing arm, and a control component for controlling the folding or unfolding of the second balancing arm and the lifting arm is installed on the tower top.

[0006] By adopting the above technical solution, the balancing arm is set to a two-section type, and the first balancing arm and the second balancing arm are hinged to each other. When the anemometer detects that the wind force in the external environment is strong, the control component is started to fold the lifting arm and the second balancing arm downward and stow them, so as to avoid accidents caused by the shaking of the lifting arm and the second balancing arm due to excessive wind force. Before the second balancing arm is folded, the driving component on the moving plate drives the moving plate to move from the second balancing arm to the first balancing arm, thereby driving the counterweight block to move closer to the tower and increasing the gravity of the center point of the tower. There is no need to fold it together with the counterweight block, and there is no risk of the counterweight block falling, which is safer. At the same time, when the second balancing arm is folded downward, the support plate on the second balancing arm can support the counterweight block from the side, thereby avoiding the shaking of the counterweight block moved to the first balancing arm, which is safer.

[0007] The present invention is further configured as follows: the lifting device includes a lifting motor and a limit block installed on the lifting arm, a winding drum fixedly connected to the output shaft of the lifting motor, a steel wire rope installed on the outside of the winding drum and passing through the limit block, a weighing sensor installed on the other side of the steel wire rope, and a hook installed on the weighing sensor.

[0008] By adopting the above technical solution, the lifting motor is started to drive the wire rope outside the winding drum to be wound or loosened. Before lifting the goods, the wire rope is loosened and the hook is lowered to lift the goods, and then the wire rope is wound to lift the goods. The weighing sensor can weigh the goods when the hook lifts the goods to avoid malfunction of the lifting device caused by excessive weight.

[0009] The present invention is further configured as follows: the distribution length of the counterweight block is equal to the length exceeding the first balance arm, and the right side of the abutment plate is located above the first balance arm and the second balance arm.

[0010] By adopting the above technical solution, when the second folding arm is folded downward along the hinge point with the first balancing arm, the support plate can just support the counterweight from the side to prevent the counterweight moved to the first balancing arm from shaking, which is safer.

[0011] The present invention is further configured as follows: two abutment plates are provided on the second balancing arm, the distance between the two abutment plates is smaller than the thickness of the counterweight block, and a rubber pad is further provided at the bottom of the abutment plates.

[0012] By adopting the above technical solution, the stop plate can be attached to the counterweight block to limit the counterweight block. Installing the stop block on the front and rear sides of the second balance arm neither blocks the movement of the movable plate on the track frame nor limits the counterweight block from the side when the second balance arm is folded. The provision of the rubber pad further improves the limiting effect of the stop plate on the counterweight block.

[0013] The present invention is further configured as follows: the driving assembly comprises a driving motor mounted on the moving plate and a gear connected to an output shaft of the driving motor, and the gear is meshed with a latching tooth.

[0014] By adopting the above technical solution, the driving motor is started to drive the gear to rotate, and when the gear rotates, it engages with the latch teeth to push the movable plate to move on the track frame. When folding the second balance arm, the movable plate can drive the counterweight block from the second balance arm to the first balance arm, driving the counterweight block to move closer to the tower, thereby increasing the gravity of the center point of the tower. There is no need to fold the counterweight block together, and there is no risk of the counterweight block falling, which is safer. Moreover, each counterweight block moves independently, and the number of counterweight blocks on the second balance arm can be adjusted according to the hoisting weight of the cargo during lifting, which is more flexible.

[0015] The present invention is further configured as follows: a side plate is mounted on the movable plate, and a roller rotatably connected to the side plate is slidably connected to the track frame.

[0016] By adopting the above technical solution, the rollers are moved on the track frame, which improves the connection between the movable plate and the track frame and enables the movable plate to move more smoothly on the track frame.

[0017] The present invention is further configured as follows: the control assembly includes a rotating motor installed on the top of the tower, a winding drum fixedly connected to the output shaft of the rotating motor, and two steel wire ropes installed on the outside of the winding drum.

[0018] The present invention is further configured as follows: the winding directions of the second steel wire rope on the outside of the winding drum are opposite, and the second steel wire rope is respectively connected to the top of the second balancing arm and the lifting arm.

[0019] By adopting the above technical solution, the rotating motor is started to drive the winding drum to rotate. When the winding drum rotates, the two wire ropes are synchronously wound or released. When the anemometer detects that the wind in the external environment is strong, the winding drum releases the wire rope, so that the lifting arm and the second balance arm are folded down and stowed, avoiding accidents caused by the shaking of the lifting arm and the second balance arm due to excessive wind. When the external environment is suitable for operation, the winding drum tightens the wire rope and unfolds it through the lifting arm and the balance arm.

[0020] The present invention is further configured as follows: the tower is composed of a plurality of standard frames arranged longitudinally, the standard frame at the bottom is connected to the base, the rotating platform is arranged on the standard frame at the top, and mutually matching fitting strips and fitting grooves are provided between two adjacent standard brick frames.

[0021] By adopting the above technical solution, the arrangement of the fitting strips and the fitting grooves facilitates the alignment and connection of the standard frames at the upper and lower positions, and facilitates the change of the lifting height of the goods.

[0022] The present invention is further configured as follows: a limiting rod is also installed on the tower frame for the second balancing arm and the lifting arm to pass through when they are folded.

[0023] By adopting the above technical solution, the second balancing arm and the lifting arm can be folded and fixed when they are folded and stowed.

[0024] The beneficial effects of the present invention are:

[0025] 1. The balancing arm is set to a two-stage type, and the first balancing arm and the second balancing arm are hinged to each other. When the anemometer detects that the wind force in the external environment is strong, the control component is activated to fold the lifting arm and the second balancing arm downward to avoid accidents caused by excessive wind force causing the lifting arm and the second balancing arm to shake.

[0026] 2. Before the second balance arm is folded, the driving assembly on the moving plate drives the moving plate to move from the second balance arm to the first balance arm, thereby driving the counterweight block to move closer to the tower, increasing the gravity of the center point of the tower, without the need to fold with the counterweight block, there is no risk of the counterweight block falling, and safety is higher.

[0027] 3. At the same time, when the second balance arm is folded downward, the support plate on the second balance arm can support the counterweight from the side, thereby preventing the counterweight moved to the first balance arm from shaking, which is safer.

[0028] 4. Each counterweight block moves back and forth independently on the track frame through the driving assembly. During lifting, the number of counterweight blocks on the second balance arm can be adjusted according to the lifting weight of the cargo, which is more flexible.

[0029] 5. Installing the stop blocks on the front and rear sides of the second balancing arm will not block the movement of the movable plate on the track frame, but can also limit the counterweight block from the side when the second balancing arm is folded, thereby preventing the counterweight block from shaking when the wind is strong, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the present invention;

[0032] Figure 2 The present invention Figure 1 A magnified view of the structure at center;

[0033] Figure 3It is a schematic cross-sectional structure diagram of the hinged connection between the first balancing arm and the second balancing arm of the present invention;

[0034] Figure 4 is a top view of the hinged connection between the first balancing arm and the second balancing arm of the present invention;

[0035] Figure 5 It is a side structural cross-sectional view of the movable plate and the track frame of the present invention;

[0036] Figure 6 It is a schematic diagram of the internal structure of the tower of the present invention.

[0037] In the figure, 1, base; 2, tower; 21, standard frame; 22, fitting strip; 23, fitting groove; 3, rotating table; 4, tower top; 5, anemometer; 6, lifting arm; 7, balance arm; 71, first balance arm; 72, second balance arm; 8, lifting device; 81, lifting motor; 82, limit block; 83, winding drum; 84, wire rope one; 85, weighing sensor; 86, hook; 9, track frame; 10, latching tooth; 11, moving plate; 12, counterweight; 13, driving assembly; 131, driving motor; 132, gear; 14, abutment plate; 15, control assembly; 151, rotating motor; 152, winding drum; 153, wire rope two; 16, side plate; 17, roller; 18, limit rod; 19, rubber pad. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-6The present invention provides a port crane with wind volume detection and weighing alarm functions, comprising a base 1, a tower 2 installed on the base 1, a rotating platform 3 arranged on the tower 2, a tower top 4 installed on the rotating platform 2, an anemometer 5 installed on the tower top, a lifting arm 6 hinged on the tower 2 and a balancing arm 7 installed on the tower 2, a lifting device 8 is installed on the lifting arm 6, and the balancing arm 7 is formed by a first balancing arm 71 and a second balancing arm 72 being hinged to each other, and the first balancing arm 71 is installed on the tower 2. A track frame 9 is installed on the inner side of the first balance arm 71 and the second balance arm 72, and a plurality of equally spaced latches 10 are installed on the inner side of the track frame 9. A plurality of movable plates 11 are slidably arranged at the bottom of the track frame 9, and a counterweight block 12 is installed on the movable plate 11. A driving component 13 for driving the movable plate 11 to slide on the track frame 9 is installed on the movable plate 11. A stop plate 14 is also installed on the second balance arm 72, and a control component 15 for controlling the folding or unfolding of the second balance arm 72 and the lifting arm 6 is installed on the tower top 4.

[0040] The balancing arm 7 is set to a two-stage type, and the first balancing arm 71 and the second balancing arm 72 are hinged to each other. When the anemometer 5 detects that the wind in the external environment is strong, the control component 15 is started to fold the lifting arm 6 and the second balancing arm 72 downward and retract them to avoid accidents caused by excessive wind force causing the lifting arm 6 and the second balancing arm 72 to shake. Before the second balancing arm 72 is folded, the driving component 13 on the moving plate 11 drives the moving plate 11 to move from the second balancing arm 72 to the first balancing arm 71, thereby driving the counterweight 12 to move closer to the tower 2, increasing the gravity of the center point of the tower 2, without the need to fold it with the counterweight 12, there is no risk of the counterweight 12 falling, and safety is higher. At the same time, when the second balancing arm 72 is folded downward, the support plate 14 on the second balancing arm 72 can support the counterweight 12 from the side, thereby preventing the counterweight 12 moved to the first balancing arm 71 from shaking, and safety is higher.

[0041] The lifting device 8 includes a lifting motor 81 and a limit block 82 installed on the lifting arm 6, a winding drum 83 fixedly connected to the output shaft of the lifting motor 81, a wire rope 84 installed on the outside of the winding drum 83 and passing through the limit block 82, a weighing sensor 85 installed on the other side of the wire rope 84, and a hook 86 installed on the weighing sensor 85. The lifting motor 81 is started to drive the wire rope 84 outside the winding drum 83 to be wound or loosened. Before lifting the goods, the wire rope 84 loosens the hook 86 to descend and lift the goods, and then the wire rope 84 is wound to lift the goods. The weighing sensor 85 can weigh the goods when the hook 86 lifts the goods to avoid malfunction of the lifting device 8 due to excessive weight.

[0042] The distribution length of the counterweight block 12 is equal to the length exceeding the first balance arm 71. The right side of the support plate 14 is located above the first balance arm 71 and the second balance arm 72. When the second folding arm 72 is folded downward along the hinge point with the first balance arm 71, the support plate 14 can just support the counterweight block from the side to prevent the counterweight block 12 moved to the first balance arm 71 from shaking, which is safer.

[0043] Two support plates 14 are provided on the second balance arm 72, and the distance between the two support plates 14 is less than the thickness of the counterweight 12. A rubber pad 19 is also provided at the bottom of the support plate 14, so that the support plate 14 can be attached to the counterweight 12 to limit the counterweight 12. Installing the support block 14 on the front and rear sides of the second balance arm 72 neither blocks the movement of the movable plate 11 on the track frame 9 nor can limit the counterweight 12 from the side when the second balance arm 72 is folded. The provision of the rubber pad 19 further improves the limiting effect of the support plate 14 on the counterweight 12.

[0044] The driving assembly 13 includes a driving motor 131 installed on the moving plate 11 and a gear 132 connected to the output shaft of the driving motor 131, the gear 132 meshing with the latch 10, and the driving motor 131 starts to drive the gear 132 to rotate. When the gear 132 rotates, it meshes with the latch 10 to push the moving plate 11 to move on the track frame 9. When the second balancing arm 72 is folded, the moving plate 11 can drive the counterweight 12 to move from the second balancing arm 72 to the first balancing arm 71, driving the counterweight 12 to move closer to the tower 2, thereby increasing the gravity of the center point of the tower 2. There is no need to fold the counterweight 12 together, and there is no risk of the counterweight 12 falling off, which is safer. Moreover, each counterweight 11 moves independently, and the number of counterweights on the second balancing arm 72 can be adjusted according to the hoisting weight of the cargo during lifting, which is more flexible.

[0045] The movable plate 11 is provided with a side plate 16, and the side plate 16 is rotatably connected with a roller 17 which is slidably connected to the track frame 9. The roller 17 moves on the track frame 9, thereby improving the connection between the movable plate 12 and the track frame 9 and making the movable plate 12 move more smoothly on the track frame 9.

[0046] The control component 15 includes a rotating motor 151 installed on the tower top 4, a winding drum 152 fixedly connected to the output shaft of the rotating motor 151, and two steel wire ropes 153 installed on the outside of the winding drum 152. The winding directions of the steel wire ropes 153 on the outside of the winding drum 152 are opposite, and the inspiration steel wire ropes 153 are respectively connected to the tops of the second balance arm 72 and the lifting arm 6. The rotating motor 151 is started to drive the winding drum 152 to rotate. When the winding drum 152 rotates, the two steel wire ropes 153 are synchronously wound or released. When the anemometer 5 detects that the wind in the external environment is strong, the winding drum 152 releases the steel wire ropes 153, so that the lifting arm 6 and the second balance arm 72 are folded and retracted downward to avoid accidents caused by excessive wind force causing the lifting arm 6 and the second balance arm 72 to shake. When the external environment is suitable for operation, the winding drum 152 tightens the steel wire ropes 153 and unfolds them through the lifting arm 6 and the balance arm 7.

[0047] The tower 2 is composed of a plurality of standard frames 21 arranged longitudinally, wherein the standard frame 21 at the bottom is connected to the base 1, and the rotating platform 3 is arranged on the standard frame 21 at the top. Matching strips 22 and matching grooves 23 are provided between two adjacent standard brick frames 21. The arrangement of the matching strips 22 and matching grooves 23 facilitates the alignment and connection of the standard frames 21 at the upper and lower positions, and facilitates the change of the lifting height of the goods.

[0048] The tower 2 is also provided with a limiting rod 18 for the second balancing arm 72 and the lifting arm 6 to pass through when they are folded, so that the second balancing arm 72 and the lifting arm 6 can be folded and fixed when they are folded and retracted.

Claims

1. A port crane with wind volume detection and weighing alarm functions, comprising a base (1), a tower (2) mounted on the base (1), a rotating platform (3) arranged on the tower (2), a tower top (4) mounted on the rotating platform (2), an anemometer (5) mounted on the tower top, a lifting arm (6) hinged on the tower (2), and a balancing arm (7) mounted on the tower (2), wherein a lifting device (8) is mounted on the lifting arm (6), characterized in that: The balancing arm (7) is formed by a first balancing arm (71) and a second balancing arm (72) being hinged to each other. The first balancing arm (71) is mounted on the tower (2). A track frame (9) is mounted on the inner side of each of the first balancing arm (71) and the second balancing arm (72). A plurality of equally spaced latching teeth (10) are mounted on the inner side of the track frame (9). A plurality of movable plates (11) are slidably mounted at the bottom of the track frame (9). A counterweight (12) is mounted on the movable plate (11). A driving assembly (13) for driving the movable plate (11) to slide on the track frame (9) is mounted on the movable plate (11). A stop plate (14) is also mounted on the second balancing arm (72). A control assembly (15) for controlling the folding or unfolding of the second balancing arm (72) and the lifting arm (6) is mounted on the tower top (4).

2. A port crane with wind volume detection and weighing alarm functions according to claim 1, characterized in that: The lifting device (8) comprises a lifting motor (81) and a limit block (82) mounted on the lifting arm (6), a winding drum (83) fixedly connected to the output shaft of the lifting motor (81), a steel wire rope (84) mounted on the outside of the winding drum (83) and passing through the limit block (82), a weighing sensor (85) mounted on the other side of the steel wire rope (84), and a hook (86) mounted on the weighing sensor (85).

3. A port crane with wind volume detection and weighing alarm functions according to claim 2, characterized in that: The distribution length of the counterweight block (12) is equal to the length exceeding the first balance arm (71), and the right side of the abutment plate (14) is located above the first balance arm (71) and the second balance arm (72).

4. The port crane with wind volume detection and weighing alarm functions according to claim 3 is characterized in that: Two abutment plates (14) are provided on the second balancing arm (72), the distance between the two abutment plates (14) is smaller than the thickness of the counterweight (12), and a rubber pad (19) is also provided at the bottom of the abutment plates (14).

5. A port crane with wind volume detection and weighing alarm functions according to claim 4, characterized in that: The driving assembly (13) comprises a driving motor (131) mounted on the moving plate (11) and a gear (132) connected to an output shaft of the driving motor (131), wherein the gear (132) meshes with the latching teeth (10).

6. The port crane with wind volume detection and weighing alarm functions according to claim 5 is characterized in that: The movable plate (11) is provided with a side plate (16), and the side plate (16) is rotatably connected with a roller (17) which is slidably connected with the track frame (9).

7. The port crane with wind volume detection and weighing alarm functions according to claim 6 is characterized in that: The control assembly (15) comprises a rotating motor (151) installed on the tower top (4), a winding drum (152) fixedly connected to the output shaft of the rotating motor (151), and two steel wire ropes (153) installed outside the winding drum (152).

8. The port crane with wind volume detection and weighing alarm functions according to claim 7 is characterized in that: The winding direction of the second steel wire rope (153) outside the winding drum (152) is opposite, and the inspiration steel wire rope (153) is respectively connected to the top of the second balance arm (72) and the lifting arm (6).

9. The port crane with wind volume detection and weighing alarm functions according to claim 8, characterized in that: The tower frame (2) is composed of a plurality of standard frames (21) arranged longitudinally, the standard frame (21) at the bottom is connected to the base (1), the rotating platform (3) is arranged on the standard frame (21) at the top, and mutually matching fitting strips (22) and fitting grooves (23) are provided between two adjacent standard brick frames (21).

10. A port crane with wind volume detection and weighing alarm functions according to claim 9, characterized in that: The tower (2) is also provided with a limiting rod (18) through which the second balancing arm (72) and the lifting arm (6) pass when they are folded.

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