Shore crane

Abstract

The invention provides a quay crane which comprises a lifting winding drum, a pitching winding drum driving unit, a driving unit and a switching assembly, the lifting winding drum is provided with a lifting matching part, the pitching winding drum is used for winding a pitching rope, the pitching winding drum is provided with a pitching matching part, and the driving unit is provided with at least one output part. The switching assembly is provided with a driving matching part, a first driven matching part and a second driven matching part, the driving matching part is in transmission connection with the output part, the first driven matching part is in transmission connection with the lifting matching part, and the second driven matching part is in transmission connection with the pitching matching part; the switching assembly is configured to enable the driving matching part to be in transmission connection with the first driven matching part or the second driven matching part so that the driving unit can drive the lifting winding drum or the pitching winding drum to rotate. According to the quay crane, the hoisting mechanism and the pitching mechanism share the same driving source, a power source is omitted, cost is reduced, and the problem that in the prior art, the utilization rate of a pitching motor of a front girder is low is solved.

Description

Technical Field

[0001] The present application relates to the field of port machinery, and in particular to a quay crane. Background Art

[0002] A quay crane, also known as a shore container crane, is a specialized equipment used for loading and unloading container ships at container terminals and is generally installed on the shore of a port terminal.

[0003] The quay crane is mainly composed of the front beam, rear beam, door frame and other structures. The front beam is set on the door frame and is a dynamic structure. Its position can be switched between the raised state and the flat state. This design is to meet the ship-giving working conditions at the dock. The front beam is switched between the raised state and the flat state through the pitching system. The pitching system is mainly composed of a motor, a coupling, a brake, a reduction box, a drum and the like.

[0004] In addition, the quay crane also has a lifting system, which is used to provide lifting drive to the spreader to transport containers. The lifting system is mainly composed of a motor, a coupling, a brake, a reduction gearbox, a drum, etc.

[0005] However, in the prior art quay crane, the pitching system and the lifting system are respectively provided with driving mechanisms such as motors, which are relatively costly, and the utilization rate of the pitching system is relatively low, and the resource utilization rate is not high. Therefore, it needs to be further improved. Summary of the invention

[0006] The present application provides a quay crane, in which the lifting mechanism and the pitching mechanism share a common driving source, thereby eliminating a set of power sources, reducing costs, and solving the problem of low utilization rate of the pitching motor of the front beam in the prior art.

[0007] In order to achieve the above objectives, this application adopts the following technical solutions:

[0008] The present application provides a quay crane, comprising a door frame, a front beam which is arranged on the door frame so as to be pitchable and swingable, a pitching rope for driving the front beam to pitch and swing, a sling for lifting goods and a lifting rope for driving the sling to rise and fall; the quay crane also comprises: a lifting drum for winding the lifting rope, the lifting drum having a lifting matching part; a pitching drum for winding the pitching rope, the pitching drum having a pitching matching part; a driving unit, the driving unit having at least one output part; a switching component, the switching component having an active matching part, a first driven matching part and a second driven matching part, the active matching part being transmission-connected with the output part, the first driven matching part being transmission-connected with the lifting matching part, and the second driven matching part being transmission-connected with the pitching matching part; the switching component is configured to: enable the active matching part to be switchably transmission-connected with the first driven matching part and the second driven matching part, so that the driving unit can switchably drive the lifting drum and the pitching drum to rotate.

[0009] As an optional embodiment, the switching component also includes: a switching part, which is slidably connected to the active matching part and can slide between a first position and a second position relative to the active matching part; when the switching part is in the first position, the active matching part is transmission-connected to the first passive matching part; when the switching part is in the second position, the active matching part is transmission-connected to the second passive matching part.

[0010] As an optional embodiment, the switching assembly also includes: a sliding shaft, which is fixed to the door frame; and a movable part, which is slidably disposed on the sliding shaft and connected to the switching part to drive the switching part to switch between the first position and the second position by sliding.

[0011] As an optional embodiment, the quay crane also includes: a lifting shaft, which is rotatably arranged on the lifting drum, and the lifting shaft is connected to the output part; an active matching part is fixed to the lifting shaft, a first driven matching part is rotatably arranged on the lifting shaft, and a second driven matching part is rotatably arranged on the lifting shaft, and the first driven matching part and the second driven matching part are respectively arranged on both sides of the active matching part; when the switching part is in the first position, the switching part is transmission connected with the active matching part and the first driven matching part; when the switching part is in the second position, the switching part is transmission connected with the active matching part and the second driven matching part.

[0012] As an optional embodiment, the switching part has switching gear teeth; the active matching part has driving gear teeth; the first driven matching part has first input gear teeth; the second driven matching part has second input gear teeth; when the switching part is in the first position, the switching gear teeth are meshed with the driving gear teeth and the first input gear teeth; when the switching part is in the second position, the switching gear teeth are meshed with the driving gear teeth and the second input gear teeth.

[0013] As an optional implementation, the lifting matching portion has lifting gear teeth, the first driven matching portion has first output gear teeth, and the lifting gear teeth are meshed with the first output gear teeth.

[0014] As an optional embodiment, a first bearing is arranged between the lifting shaft and the lifting drum, and the first bearing has a bearing seat, a first inner ring and a first outer ring. The bearing seat is sleeved on the lifting shaft and fixed to the lifting drum, the first inner ring is fixed to the lifting shaft, and the first outer ring is fixed to the bearing seat; the lifting mating part also includes a mating main body ring and a radial extension block, the mating main body ring is arranged on one side of the first bearing, the inner edge of the mating main body ring is sealed and connected to the lifting shaft, the mating main ring is fixed to the bearing seat, the radial extension block is formed on the mating main body ring and extends along the axial direction of the lifting shaft; the lifting gear teeth are formed on the radial extension block.

[0015] As an optional embodiment, the pitch matching part includes: an active transmission wheel, which is rotatably arranged on the lifting shaft; a driven transmission wheel, which is rotatably arranged on the pitch drum, the driven transmission wheel is transmission-connected to the active transmission wheel, and the driven transmission wheel is transmission-connected to the second driven matching part.

[0016] As an optional embodiment, the pitch drum has pitch gear teeth; the second driven mating part has second output gear teeth, and the second output gear teeth are meshed with the pitch gear teeth; a second bearing is arranged between the lifting shaft and the active transmission wheel, and a bearing cover is arranged on the second bearing; the pitch gear teeth are formed on the bearing cover.

[0017] As an optional embodiment, the driving unit has two output parts; there are two lifting drums, and the two lifting drums are arranged in parallel; there are two lifting shafts, and the two lifting shafts are rotatably provided on the two lifting drums, and the two lifting shafts are respectively connected to the two output parts; there are two switching components, and the two switching components correspond one by one to the two lifting shafts.

[0018] In the quay crane of the present application, since the active matching part is transmission-connected with the output part, the first driven matching part is transmission-connected with the lifting matching part, and the second driven matching part is transmission-connected with the pitch matching part, the switching component can make the active matching part transmission-connected with the first driven matching part or the second driven matching part, so that the driving unit drives the lifting drum or the pitching drum to rotate. Therefore, the quay crane of the present application selectively transmits the power of the driving unit to the lifting drum or the pitching drum through the switching component, that is, the lifting drum or the pitching drum share a set of driving sources to realize rotation respectively, thus eliminating a set of power sources, greatly reducing costs, and solving the problem of low utilization rate of the pitching motor of the front beam in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A three-dimensional diagram of a quay crane in one embodiment of the present application;

[0021] Figure 2 A top view of a quay crane in one embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the driving principle of the quay crane in one embodiment of the present application;

[0023] Figure 4 for Figure 3 A magnified view of part A;

[0024] Figure 5 This is a schematic diagram of a switching assembly when the switching portion is in a first position in one embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of a switching component when the switching portion is in the second position in one embodiment of the present application.

[0026] Description of reference numerals:

[0027] 110, door frame; 120, front beam; 130, rear beam; 200, lifting drum; 220, lifting matching part; 222, lifting gear; 224, matching main body ring; 226, radial extension block; 230, lifting shaft; 300, pitching drum; 320, pitching matching part; 322, active transmission wheel; 324, driven transmission wheel; 326, chain; 330, pitching gear; 410, driving motor; 412, motor output shaft; 420, reducer; 422, input part; 424, output part; 430, emergency drive part; 510, Active mating part; 512, active gear teeth; 520, first driven mating part; 522, first input gear teeth; 524, first output gear teeth; 530, second driven mating part; 532, second input gear teeth; 534, second output gear teeth; 540, switching part; 542, switching gear teeth; 550, sliding shaft; 560, movable part; 570, housing; 600, first bearing; 610, bearing seat; 620, first inner ring; 630, first outer ring; 710, second bearing; 712, second inner ring; 714, second outer ring; 716, bearing cover. DETAILED DESCRIPTION

[0028] In the prior art quay crane, the lifting mechanism and the pitching mechanism each have a set of driving mechanisms, and the utilization rate of the pitching mechanism is low, and the resource utilization rate is not high.

[0029] In order to overcome the defects in the prior art, the present application discloses a quay crane, in which the active matching part is transmission-connected with the output part, the first driven matching part is transmission-connected with the lifting matching part, and the second driven matching part is transmission-connected with the pitch matching part, and the switching component can make the active matching part transmission-connected with the first driven matching part or the second driven matching part, so that the driving unit drives the lifting drum or the pitching drum to rotate. Therefore, the quay crane of the present application selectively transmits the power of the driving unit to the lifting drum or the pitching drum through the switching component, that is, the lifting drum or the pitching drum share a set of driving sources to realize rotation respectively, thus eliminating a set of power sources, greatly reducing costs, and solving the problem of low utilization rate of the pitching motor of the front beam in the prior art.

[0030] The following will be combined Figures 1 to 6 The content of the present application is described in detail so that those skilled in the art can understand the content of the present application more clearly and in detail. It should be noted that the embodiments described below are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0031] The present application provides a quay crane, which includes a door frame 110, a front beam 120, a rear beam 130, a lifting mechanism and a pitching mechanism. The rear beam 130 is fixedly arranged on the door frame 110, and the front beam 120 is swingably arranged on the door frame 110.

[0032] The lifting mechanism may further include a sling, a lifting rope and a lifting drum 200. The sling is used to lift the cargo, and the lifting drum 200 is rotatably arranged on the door frame 110 for winding the lifting rope, which is connected to the sling to drive the sling to lift, thereby driving the container to lift.

[0033] The pitch mechanism may further include a pitch rope and a pitch drum 300. The pitch drum 300 is rotatably disposed on the door frame 110 for winding the pitch rope, and the pitch rope is connected to the front beam 120 for driving the front beam 120 to pitch and swing up and down.

[0034] In some embodiments, the lifting drum 200 has a lifting matching part 220, and the pitching drum 300 has a pitching matching part 320. And the quay crane may also include a driving unit and a switching assembly. The driving unit has at least one output part 424. The switching assembly has an active matching part 510, a first driven matching part 520 and a second driven matching part 530, the active matching part 510 is transmission-connected with the output part 424, the first driven matching part 520 is transmission-connected with the lifting matching part 220, and the second driven matching part 530 is transmission-connected with the pitching matching part 320. The switching assembly is configured to: enable the active matching part 510 to be switchably transmission-connected with the first driven matching part 520 and the second driven matching part 530, so that the driving unit drives the lifting drum 200 and the pitching drum 300 to rotate.

[0035] In this embodiment, the driving unit outputs the rotational power to the outside through the output part 424. The output part 424 of the switching component is in transmission connection with the active matching part 510 of the driving unit, so that the power of the driving unit can be transmitted to the active matching part 510.

[0036] The first driven matching part 520 is connected to the lifting matching part 220 by transmission, and the second driven matching part 530 is connected to the pitch matching part 320 by transmission. The switching component can make the active matching part 510 connected to the first driven matching part 520 by transmission, or make the active matching part 510 connected to the second driven matching part 530 by transmission.

[0037] When the active matching part 510 is connected to the first driven matching part 520 in transmission, the power of the driving unit can be transmitted to the lifting drum 200 by the active matching part 510, the first driven matching part 520 and the lifting matching part 220, driving the lifting drum 200 to rotate, thereby winding the lifting rope and driving the lifting device to rise and fall.

[0038] When the active matching part 510 is connected with the second driven matching part 530 by transmission, the power of the driving unit can be transmitted to the pitch drum 300 by the active matching part 510, the second driven matching part 530 and the pitch matching part 320, driving the pitch drum 300 to rotate, thereby winding the pitch rope and realizing the pitch swing of the front beam 120.

[0039] It can be seen that the quay crane of this embodiment selectively transmits the power of the driving unit to the hoisting drum 200 or the pitching drum 300 through the switching assembly. In other words, the hoisting drum 200 or the pitching drum 300 share a set of driving sources to realize rotation respectively, thus eliminating a set of power sources and greatly reducing costs.

[0040] In addition, it can be known from the background technology part that the pitching and swinging of the front beam 120 is to meet the ship-passing conditions at the dock site, while the lifting and lowering of the sling is carried out when the goods are specifically transported. During actual operation, these two actions will not be performed at the same time. Therefore, the lifting drum 200 or the pitching drum 300 share a set of driving sources, and there will be no events that affect each other.

[0041] In addition, since the pitch and roll swing of the front beam 120 is used less frequently during actual operation, the lifting drum 200 or the pitch drum 300 shares a set of driving sources, which not only saves a set of power sources and reduces costs, but also solves the problem of low utilization rate of the pitch motor of the front beam in the prior art.

[0042] In some embodiments, the switching assembly may further include a switching portion 540. The switching portion 540 may be slidably connected to the active matching portion 510, and may slide between a first position and a second position relative to the active matching portion 510. When the switching portion 540 is in the first position, the active matching portion 510 is in transmission connection with the first driven matching portion 520. When the switching portion 540 is in the second position, the active matching portion 510 is in transmission connection with the second driven matching portion 530.

[0043] Furthermore, the quay crane may further include a lifting shaft 230. The lifting shaft 230 is rotatably disposed on the lifting drum 200, and the lifting shaft 230 is connected to the output portion 424. Since the lifting shaft 230 is rotatably disposed on the lifting drum 200, the lifting shaft 230 cannot directly drive the lifting drum 200 to rotate.

[0044] The active matching part 510 is fixed to the lifting shaft 230, the first driven matching part 520 is rotatably disposed on the lifting shaft 230, the second driven matching part 530 is rotatably disposed on the lifting shaft 230, and the first driven matching part 520 and the second driven matching part 530 are respectively disposed on both sides of the active matching part 510. When the switching part 540 is in the first position, the switching part 540 is in transmission connection with the active matching part 510 and the first driven matching part 520; when the switching part 540 is in the second position, the switching part 540 is in transmission connection with the active matching part 510 and the second driven matching part 530.

[0045] Since the active matching part 510 is fixed to the lifting shaft 230, the power of the driving unit can be transmitted to the active matching part 510 through the lifting shaft 230. The first driven matching part 520 and the second driven matching part 530 can be rotatably disposed on the lifting shaft 230, so the lifting shaft 230 cannot directly drive the lifting drum 200 to rotate, that is, the lifting shaft 230 cannot directly drive the lifting drum 200 or the pitching drum 300.

[0046] In this embodiment, when the switch portion 540 is in the first position, the switch portion 540 is in transmission connection with the active matching portion 510 and the first driven matching portion 520. When the switch portion 540 is in the second position, the switch portion 540 is in transmission connection with the active matching portion 510 and the second driven matching portion 530.

[0047] That is, by controlling the movement of the switching part 540, the active matching part 510 can be indirectly and selectively connected to the first driven matching part 520 or the second driven matching part 530. By controlling the movement of the switching part 540, the active matching part 510 can be indirectly and selectively connected to the lifting matching part 220 or the pitching matching part 320. By controlling the movement of the switching part 540, the active matching part 510 can be indirectly and selectively driven to rotate the lifting drum 200 or the pitching drum 300 to achieve their respective functions.

[0048] In some embodiments, the switching portion 540 and the active matching portion 510 can be connected to each other through gear meshing. The switching portion 540 and the first driven matching portion 520 can be connected to each other through gear meshing. The switching portion 540 and the second driven matching portion 530 can be connected to each other through gear meshing.

[0049] Specifically, the switching portion 540 has a switching gear 542 . The active matching portion 510 has an active gear 512 . The first driven matching portion 520 has a first input gear 522 . The second driven matching portion 530 has a second input gear 532 .

[0050] When the switch portion 540 is in the first position, the switch gear 542 meshes with the driving gear 512 and the first input gear 522. When the switch portion 540 is in the second position, the switch gear 542 meshes with the driving gear 512 and the second input gear 532.

[0051] In some specific embodiments, since the active matching portion 510, the first driven matching portion 520 and the second driven matching portion 530 are all sleeved on the lifting shaft 230, the active gear teeth 512, the first input gear teeth 522 and the second input gear teeth 532 can all be configured as external gears. The switching portion 540 can be configured as a bushing sleeved on the lifting shaft 230 and slidable along the lifting shaft 230, and the switching gear teeth 542 can be configured as an internal gear disposed on the inner wall of the bushing.

[0052] Since the first driven matching part 520 and the second driven matching part 530 are respectively arranged on both sides of the active matching part 510. When the switching part 540 moves to the side of the active matching part 510 close to the first driven matching part 520, the switching gear 542 (internal gear) is meshed with the driving gear 512 (external gear) and the first input gear 522 (external gear) at the same time, so that the active matching part 510 is connected to the first driven matching part 520. Similarly, when the switching part 540 moves to the side of the active matching part 510 close to the second driven matching part 530, the switching gear 542 (internal gear) is meshed with the driving gear 512 (external gear) and the second input gear 532 (external gear) at the same time, so that the active matching part 510 is connected to the second driven matching part 530.

[0053] In some embodiments, the first driven matching portion 520 and the lifting matching portion 220 may also be connected in transmission via gear meshing.

[0054] Specifically, the lifting matching portion 220 has a lifting gear tooth 222 , and the first driven matching portion 520 has a first output gear tooth 524 . The lifting gear tooth 222 meshes with the first output gear tooth 524 .

[0055] Furthermore, the first output gear teeth 524 can be arranged side by side with the first input gear teeth 522 and can be arranged as an external gear. The lifting gear teeth 222 can be arranged as an internal gear, and the two can mesh with each other to achieve transmission connection between the first driven matching portion 520 and the lifting gear teeth 222.

[0056] Furthermore, a first bearing 600 is arranged between the lifting shaft 230 and the lifting drum 200. The first bearing 600 has a bearing seat 610, a first inner ring 620 and a first outer ring 630. The bearing seat 610 is sleeved on the lifting shaft 230 and fixed to the lifting drum 200. The first inner ring 620 is fixed to the lifting shaft 230, and the first outer ring 630 is fixed to the bearing seat 610.

[0057] The lifting mating part 220 may further include a mating body ring 224 and a radial extension block 226. The mating body ring 224 is disposed on one side of the first bearing 600. The inner edge of the mating body ring 224 is sealed and connected to the lifting shaft 230. The mating body ring 224 is fixed to the bearing seat 610. The radial extension block 226 is formed on the mating body ring 224 and extends along the axial direction of the lifting shaft 230. The lifting gear 222 is formed on the radial extension block 226.

[0058] In this embodiment, the bearing seat 610 is fixed to the lifting drum 200, the outer ring is fixed to the bearing seat 610, and the inner ring is fixed to the lifting shaft 230. The outer ring and the inner ring rotate relative to each other to rotationally support the lifting shaft 230 and the lifting drum 200 through the first bearing 600.

[0059] Furthermore, the inner edge of the mating body ring 224 is sealed and connected to the lifting shaft 230, and the mating body ring 224 is fixed to the bearing seat 610, that is, the mating body ring 224 is equivalent to the bearing cover. The radial extension block 226 is formed on the mating body ring 224 and extends along the axial direction of the lifting shaft 230, and the lifting gear 222 is formed on the radial extension block 226. That is, the lifting gear 222 is arranged on the bearing cover, so that the overall structure is more compact.

[0060] In some embodiments, the pitch matching part 320 may include an active transmission wheel 322 and a driven transmission wheel 324. The active transmission wheel 322 is rotatably disposed on the lifting shaft 230, the active transmission wheel 322 is transmission-connected to the second driven matching part 530, the driven transmission wheel 324 is fixed to the pitch drum 300, and the driven transmission wheel 324 is transmission-connected to the active transmission wheel 322.

[0061] In some specific embodiments, the active transmission wheel 322 and the driven transmission wheel 324 can be driven by a chain 326 or a belt.

[0062] In this embodiment, the active transmission wheel 322 is rotatably disposed on the lifting shaft 230, so that the lifting shaft 230 cannot directly drive the active transmission wheel 322 to rotate. The active transmission wheel 322 is in transmission connection with the second driven matching portion 530. When the switching portion 540 is in the second position, the switching portion 540 is in transmission connection with the active matching portion 510 and the second driven matching portion 530, so that the rotational power on the lifting shaft 230 is transmitted to the active transmission wheel 322 through the active matching portion 510, the switching portion 540, and the second driven matching portion 530. Since the active transmission wheel 322 is in transmission connection with the second driven matching portion 530, the driven transmission wheel 324 is fixed to the pitch drum 300, and the rotational power on the active transmission wheel 322 is transmitted to the pitch drum 300.

[0063] In some embodiments, the second driven matching portion 530 and the active transmission wheel 322 can also be connected to each other through gear meshing to achieve transmission connection.

[0064] Specifically, the active transmission wheel 322 has a pitch gear 330 , and the second driven matching portion 530 has a second output gear tooth 534 . The pitch gear tooth 330 meshes with the second output gear tooth 534 .

[0065] Furthermore, the second output gear teeth 534 can be arranged side by side with the second input gear teeth 532 and can be arranged as external gears. The pitch gear teeth 330 can be arranged as internal gears, and the two can mesh with each other to achieve transmission connection between the second driven matching portion 530 and the active transmission wheel 322 .

[0066] Furthermore, a second bearing 710 is provided between the lifting shaft 230 and the active transmission wheel 322 . The second bearing 710 has a second inner ring 712 and a second outer ring 714 . The second outer ring 714 is fixed to the active transmission wheel 322 , and the second inner ring 712 is fixed to the lifting shaft 230 .

[0067] The second bearing 710 is provided with a bearing cap 716, and the bearing cap 716 can be used to seal and protect the second inner ring 712 and the second outer ring 714. The pitch gear 330 can be formed on the bearing cap 720, so that the overall structure is more compact.

[0068] In some embodiments, the switching assembly may further include a sliding shaft 550 and a movable portion 560. The sliding shaft 550 is fixed to the door frame 110. The movable portion 560 is slidably disposed on the sliding shaft 550 and connected to the switching portion 540 to drive the switching portion 540 to switch between the first position and the second position by sliding.

[0069] Furthermore, the switching assembly may further include a housing 570, which is cylindrical and sleeved and fixed to the door frame 110. The sliding shaft 550 is fixed to the inside of the housing 570 along the axial direction of the lifting shaft 230. The movable portion 560 can be sleeved on the sliding shaft 550 slidably along the axial direction of the sliding shaft 550, and the movable portion 560 is connected to the switching portion 540 through a connecting rod. The movable portion 560 can be slidable by manual or electric drive, so as to drive the movable portion 560 to slide, thereby driving the switching portion 540 to switch between the first position and the second position.

[0070] In some embodiments, the driving unit has two output parts 424. There are two lifting drums 200, and the two lifting drums 200 are arranged in parallel. There are two lifting shafts 230, and the two lifting shafts 230 are rotatably disposed in the two lifting drums 200, and the two lifting shafts 230 are respectively connected to the two output parts 424. There are two switching components, and the two switching components correspond to the two lifting shafts 230 one by one.

[0071] In some specific embodiments, the driving unit may include two driving motors 410 and a reducer 420, and the two driving motors 410 respectively have motor output shafts 412. The reducer 420 has two input parts 422 and two output parts 424. The two motor output shafts 412 are respectively connected to the two input parts 422, and after being decelerated by the reducer 420, the power is output from the two output parts 424.

[0072] In actual use, the two driving motors 410 are used as one and reserved as the other. After each driving motor 410 inputs power into the reducer 420 from the corresponding input part 422 , the power is output from the corresponding output part 424 of the reducer 420 .

[0073] There are two lifting drums 200 , and the two lifting drums 200 are arranged in parallel. Each lifting drum 200 has a lifting shaft 230 to rotatably support the lifting drum 200 .

[0074] The two lifting shafts 230 are respectively connected to the two output parts 424 to transmit the rotational power of the two driving motors 410 to the two lifting shafts 230 respectively.

[0075] There are two switching components, and the two switching components correspond to the two lifting shafts 230 one by one. The active matching part 510 in the two switching components is fixed to the corresponding lifting shaft 230, the first driven matching part 520 is rotatably arranged on the corresponding lifting shaft 230, and the second driven matching part 530 is rotatably arranged on the lifting shaft 230. When the switching part 540 is in the first position, the switching part 540 is connected to the active matching part 510 and the first driven matching part 520 in transmission connection to drive the corresponding lifting drum 200 to rotate. When the switching part 540 is in the second position, the switching part 540 is connected to the active matching part 510 and the second driven matching part 530 in transmission connection to drive the pitching drum 300 to rotate. That is, any switching component can realize driving the corresponding lifting drum 200 to rotate or the pitching drum 300 to rotate.

[0076] In some embodiments, the quay crane may further include an emergency drive unit 430, which is transmission-connected to the input unit 422 of the reducer 420, so that the emergency drive unit 430 can also be used to drive the lifting drum 200 to rotate or the pitching drum 300 to rotate.

[0077] In addition, since the emergency drive unit 430 is connected to the input part 422 of the reducer 420, the power of the emergency drive unit 430 can be transmitted to the lifting drum 200 or the pitching drum 300 by switching the switching component. In other words, the lifting drum 200 and the pitching drum 300 can also share an emergency drive unit 430, eliminating one emergency drive unit, which further reduces costs.

[0078] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0079] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0080] It should be easily understood that the terms “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” means not only “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0081] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A quay crane, comprising a door frame (110), a front beam (120) arranged on the door frame (110) so as to be able to pitch and swing, a pitching rope for driving the front beam (120) to pitch and swing, a sling for lifting goods, and a lifting rope for driving the sling to rise and fall; the quay crane also comprises: A lifting drum (200) is used for winding the lifting rope, and the lifting drum (200) has a lifting matching portion (220); A pitch drum (300) for winding the pitch rope, wherein the pitch drum (300) has a pitch matching portion (320); A drive unit having at least one output portion (424); A switching component, the switching component having an active matching part (510), a first driven matching part (520) and a second driven matching part (530), the active matching part (510) being transmission-connected to the output part (424), the first driven matching part (520) being transmission-connected to the lifting matching part (220), and the second driven matching part (530) being transmission-connected to the pitch matching part (320); the switching component is configured to enable the active matching part (510) to be switchably connected to the first driven matching part (520) and the second driven matching part (530) so that the driving unit can switchably drive the lifting drum (200) and the pitching drum (300) to rotate.

2. The quay crane according to claim 1, wherein: The switching component also includes: A switching part (540), wherein the switching part (540) is slidably connected to the active matching part (510) and can slide between a first position and a second position relative to the active matching part (510); when the switching part (540) is in the first position, the active matching part (510) is transmission-connected to the first driven matching part (520); when the switching part (540) is in the second position, the active matching part (510) is transmission-connected to the second driven matching part (530).

3. The quay crane according to claim 2, wherein: The switching component also includes: A sliding shaft (550), wherein the sliding shaft (550) is fixed to the door frame (110); The movable part (560) is slidably disposed on the sliding shaft (550) and is connected to the switching part (540) so as to drive the switching part (540) to switch between the first position and the second position by sliding.

4. The quay crane according to claim 2 or 3, further comprising: A lifting shaft (230), the lifting shaft (230) is rotatably disposed on the lifting drum (200), and the lifting shaft (230) is connected to the output portion (424); The active matching part (510) is fixed to the lifting shaft (230), the first driven matching part (520) is rotatably arranged on the lifting shaft (230), the second driven matching part (530) is rotatably arranged on the lifting shaft (230), and the first driven matching part (520) and the second driven matching part (530) are respectively arranged on both sides of the active matching part (510); When the switching part (540) is in the first position, the switching part (540) is transmission-connected with the active matching part (510) and the first driven matching part (520); when the switching part (540) is in the second position, the switching part (540) is transmission-connected with the active matching part (510) and the second driven matching part (530).

5. The quay crane according to claim 4, wherein: The switching portion (540) has switching gear teeth (542); The active matching portion (510) has active gear teeth (512); The first driven matching portion (520) has a first input gear tooth (522); the second driven matching portion (530) has a second input gear tooth (532); When the switching part (540) is in the first position, the switching gear teeth (542) mesh with the driving gear teeth (512) and the first input gear teeth (522); when the switching part (540) is in the second position, the switching gear teeth (542) mesh with the driving gear teeth (512) and the second input gear teeth (532).

6. The quay crane according to claim 4, wherein: The lifting matching portion (220) has lifting gear teeth (222), the first driven matching portion (520) has first output gear teeth (524), and the lifting gear teeth (222) are meshed with the first output gear teeth (524).

7. The quay crane according to claim 6, wherein: A first bearing (600) is arranged between the lifting shaft (230) and the lifting drum (200), and the first bearing (600) comprises a bearing seat (610), a first inner ring (620) and a first outer ring (630); the bearing seat (610) is sleeved on the lifting shaft (230) and fixed to the lifting drum (200); the first inner ring (620) is fixed to the lifting shaft (230); and the first outer ring (630) is fixed to the bearing seat (610); The lifting mating part (220) further comprises a mating main body ring (224) and a radial extension block (226); the mating main body ring (224) is arranged on one side of the first bearing (600); the inner edge of the mating main body ring (224) is sealed and connected to the lifting shaft (230); the mating main body ring (224) is fixed to the bearing seat (610); the radial extension block (226) is formed on the mating main body ring (224) and extends along the axial direction of the lifting shaft (230); The lifting wheel teeth (222) are formed on the radially extending block (226).

8. The quay crane according to claim 4, wherein: The pitch matching part (320) comprises: A driving transmission wheel (322), wherein the driving transmission wheel (322) is rotatably disposed on the lifting shaft (230); A driven transmission wheel (324), the driven transmission wheel (324) is rotatably arranged on the pitch reel (300), the driven transmission wheel (324) is transmission-connected to the active transmission wheel (322), and the driven transmission wheel (324) is transmission-connected to the second driven matching portion (530).

9. The quay crane according to claim 8, wherein: The pitch reel (300) has pitch gear teeth (330); The second driven matching portion (530) has a second output gear tooth (534), and the second output gear tooth (534) is meshed with the pitch gear tooth (330); A second bearing (710) is provided between the lifting shaft (230) and the active transmission wheel (322), and a bearing cover (716) is provided on the second bearing (710); The pitch gear (330) is formed on the bearing cover (716).

10. The quay crane according to claim 4, wherein: The driving unit has two output parts (424); There are two lifting drums (200), and the two lifting drums (200) are arranged in parallel; There are two lifting shafts (230), and the two lifting shafts (230) are rotatably disposed on the two lifting drums (200), and the two lifting shafts (230) are connected to the two output parts (424) respectively; There are two switching components, and the two switching components correspond one to one with the two lifting shafts (230) respectively.

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