Ship unloader

Abstract

The ship unloader of the present invention comprises: a lifting plate, the thickness direction of the lifting plate being in the vertical direction, the lifting plate having a sliding hole extending therethrough in the vertical direction, and the lifting plate being used for loading cargo; a lifting portion, the lifting portion comprising a lifting block, a sliding rod, and a limiting block, the limiting block being located below the lifting plate and connected to the sliding rod so that the limiting block has a first position and a second position, wherein the limiting block abuts the lifting plate in the first position and is spaced apart from the lifting plate in the second position; a first driver, a guide wheel, and a lifting rope, the lifting rope being hung on the guide wheel, the ends of the lifting rope being respectively connected to the first driver and the lifting block; an overload protection device, the overload protection device comprising a brake post and a brake rod, the brake post extending in the vertical direction, the brake post having a plurality of brake grooves sequentially arranged in the vertical direction, the limiting block being able to drive the brake rod to move horizontally toward the brake groove so that the brake rod can be inserted into the brake groove. The ship unloader according to the present invention has the advantage of high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a ship unloader. Background Art

[0002] At my country's bulk cargo terminals, bridge-type grab ship unloaders, as crucial loading and unloading equipment at the forefront of bulk cargo terminals, play a significant role in daily port operations. These unloaders consist of a metal structure consisting of front and rear gantries, front and rear beams, front and rear horizontal trusses, front and rear tie rods, a small gantries, diagonal braces, side trusses, a platform, a hopper, and supports. They also include components such as the lifting and opening / closing mechanism, a trolley mechanism, a boom mechanism, a trolley mechanism, a grab and hopper receiving system, a water spray dust control system, a mobile operator's cab, maintenance facilities, and safety features such as anti-climbers, anchors, mooring cables, safety hooks, and limiters, as well as an electrical system. These unloaders offer high speed and efficiency, making them suitable for unloading ships at medium- and small-sized ports or coal unloading at power plant terminals. A well-designed grab overload protection device is crucial for improving the efficiency and protecting the equipment. However, in actual application, there are still the following deficiencies: poor safety. When the wire rope breaks accidentally, the cargo will fall directly to the ground and scatter, causing damage to people and cargo. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a ship unloader.

[0004] The ship unloader according to the embodiment of the present invention comprises:

[0005] a lifting plate, wherein the thickness direction of the lifting plate is the up-down direction, the lifting plate has a sliding hole passing through the lifting plate in the up-down direction, and the lifting plate is used for loading cargo;

[0006] The lifting portion includes a lifting block, a sliding rod and a limiting block, the sliding rod being slidably arranged in the sliding hole along the up and down directions, the lifting block being located above the lifting plate and connected to the sliding rod, the limiting block being located below the lifting plate and connected to the sliding rod so that the limiting block has a first position and a second position, in the first position, the limiting block abuts against the lifting plate, and in the second position, the limiting block is spaced apart from the lifting plate;

[0007] a first driver, a guide wheel, and a sling, wherein the sling is hung on the guide wheel, and both ends of the sling are connected to the first driver and the lifting block respectively, and the first driver can drive the lifting block to move in the up and down directions through the sling;

[0008] An overload protection device includes a brake column and a brake rod, wherein the brake column extends in the up-down direction, and the brake column has a plurality of brake grooves arranged in sequence in the up-down direction. The brake rod is movably arranged on the lifting plate in the horizontal direction. During the process of the limit block moving from the first position to the second position, the limit block can drive the brake rod to move in the horizontal direction toward the brake groove so that the brake rod is inserted into the brake groove.

[0009] Therefore, the ship unloader according to the embodiment of the present invention has the advantage of high safety.

[0010] In some embodiments, the brake lever extends in a first direction;

[0011] The brake rod is located between the limiting block and the brake column in the first direction, the notch of the brake groove faces the brake rod, and the limiting block has a first inclined surface facing the brake rod, and the first inclined surface is inclined from top to bottom in a direction away from the brake rod;

[0012] The overload protection device includes a fixing frame and a first elastic member, the fixing frame is arranged at the bottom of the lifting plate, the brake rod is slidably arranged on the fixing frame along the first direction, the first elastic member can be elastically deformed in the first direction, the first elastic member can drive the brake rod to rest on the first inclined surface, and during the process of the limit block moving from the first position to the second position, the first inclined surface moves downward relative to the brake rod so that the brake rod can be inserted into the brake groove.

[0013] In some embodiments, the brake rod is provided with an extrusion plate at one end adjacent to the limit block in the first direction, the thickness direction of the extrusion plate is the first direction, and the two ends of the first elastic member in the first direction are respectively connected to the fixing frame and the extrusion plate.

[0014] In some embodiments, the lifting portion includes a second elastic member, the upper and lower ends of the second elastic member are respectively connected to the bottom of the lifting plate and the limit block, and the second elastic member can be elastically deformed in the upper and lower directions;

[0015] Both sides of the limiting block in the first direction have the first inclined surfaces, and the size of at least a portion of the limiting block in the first direction decreases from top to bottom;

[0016] There are two overload protection devices, and the two overload protection rotating shafts are located on both sides of the limit block in the first direction.

[0017] In some embodiments, a lifting box is provided on the lifting plate, and the opening of the lifting box faces upward.

[0018] In some embodiments, a clamping device is provided on the lifting plate, and the clamping device includes a clamping plate. The clamping plate is located in the lifting box, the thickness direction of the clamping plate is horizontal, and the clamping plate can move in the horizontal direction.

[0019] In some embodiments, there are two clamping plates, and the two clamping plates include a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are arranged opposite to each other, and the first clamping plate and the second clamping plate can move relative to each other.

[0020] In some embodiments, the first clamping plate and the second clamping plate are arranged opposite to each other in a first direction, and the thickness direction of the first clamping plate and the thickness direction of the second clamping plate are the first direction;

[0021] The clamping device also includes

[0022] a second driver disposed on the lifting plate;

[0023] a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft both extend in the up-down direction, are spaced apart in the first direction, are rotatably mounted on the lifting plate, and are each provided with a worm gear;

[0024] a worm, wherein the axial direction of the worm is the first direction, the worm is rotatably provided on the lifting plate, the second driver drives the worm to rotate via a gear, and the worm performs worm gear transmission with the worm wheels on the first rotating shaft and the second rotating shaft;

[0025] a first connecting rod, a first guide rod and a first transmission rod, wherein the first connecting rod extends along the first direction, the first guide rod extends along the second direction, the first guide rod has a first guide hole extending therethrough in an up-down direction, the length direction of the first guide hole is the first direction, the first direction is perpendicular to the second direction, the first connecting rod is slidably provided on the lifting box along the first direction, the two ends of the first connecting rod are respectively connected to the first guide rod and the first clamping plate, one end of the first transmission rod is provided on the first rotating shaft, the other end of the first transmission rod is provided with a guide column extending into the first guide hole, the guide column extending in the up-down direction;

[0026] A second connecting rod, a second guide rod and a second transmission rod, the second connecting rod extends along the first direction, the second guide rod extends along the second direction, the second guide rod has a second guide hole running through it in the up and down directions, the length direction of the second guide hole is the first direction, the first direction is perpendicular to the second direction, the second connecting rod is slidably arranged on the lifting box along the first direction, the two ends of the second connecting rod are respectively connected to the second guide rod and the second clamping plate, one end of the second transmission rod is arranged on the second rotating shaft, and the other end of the second transmission rod is provided with a guide column extending into the second guide hole, and the guide column extends in the up and down directions.

[0027] In some embodiments, the ship unloader further includes

[0028] a bottom plate, wherein the first driver is disposed on the bottom plate;

[0029] The column extends in the up-down direction, the bottom of the column is arranged on the bottom plate, the top of the column is provided with the guide wheel, and the lifting plate is slidably arranged on the column in the up-down direction.

[0030] In some embodiments, the column has a slide groove extending in the up-down direction, the opening of the slide groove faces the lifting plate, and the lifting plate is provided with a sliding portion, and the sliding portion is movably provided in the slide groove in the up-down direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a ship unloader according to an embodiment of the present invention.

[0032] Figure 2 yes Figure 1 Magnified view of part A.

[0033] Figure 3 Schematic diagram of a limit block and a brake column according to an embodiment of the present invention.

[0034] Figure 4 Schematic diagram of a limit block and a brake column according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] Lifting plate 1, lifting box 11, first clamping plate 12, second clamping plate 13, sliding part 14;

[0037] Lifting block 21, sliding rod 22, limiting block 23, first inclined surface 24;

[0038] First driver 3, suspension rope 31;

[0039] Braking column 41, braking rod 42, fixing frame 43, first elastic member 44, extrusion plate 45;

[0040] Second driver 5, first rotating shaft 51, second rotating shaft 52, worm 53, first connecting rod 54, first guide rod 55, first transmission rod 56, second connecting rod 57, second guide rod 58, second transmission rod 59, guide post 60;

[0041] Base plate 7, column 71, guide wheel 72. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0043] The following describes a ship unloader according to an embodiment of the present invention with reference to the accompanying drawings. Figures 1 to 4 As shown, the ship unloader according to an embodiment of the present invention includes a lifting plate 1 , a lifting portion, an overload protection device, a first driver 3 , a guide wheel 72 and a lifting rope 31 .

[0044] The thickness direction of the lifting plate 1 is the up-down direction. The lifting plate 1 has a sliding hole running through it in the up-down direction. The lifting plate 1 is used for loading cargo.

[0045] The lifting portion includes a lifting block 21, a slide bar 22, and a stop block 23. The slide bar 22 is slidably disposed in the sliding hole in the vertical direction. The lifting block 21 is located above the lifting plate 1 and connected to the slide bar 22. The stop block 23 is located below the lifting plate 1 and connected to the slide bar 22, so that the stop block 23 has a first position and a second position. In the first position, the stop block 23 abuts the lifting plate 1. In the second position, the stop block 23 is spaced apart from the lifting plate 1. Specifically, the outer diameters of the lifting block 21 and the stop block 23 are both larger than the inner diameter of the sliding hole, thereby preventing the lifting block 21 and the stop block 23 from passing through the sliding hole.

[0046] The lifting rope 31 is suspended from the guide wheel 72. The ends of the lifting rope 31 are connected to the first driver 3 and the lifting block 21, respectively. The first driver 3 can drive the lifting block 21 to move vertically via the lifting rope 31. The overload protection device includes a brake column 41 and a brake rod 42. The brake column 41 extends vertically and has a plurality of brake grooves arranged in sequence vertically. The brake rod 42 is horizontally movably mounted on the lifting plate 1. When the limit block 23 moves from the first position to the second position, the limit block 23 drives the brake rod 42 to move horizontally toward the brake groove so that the brake rod 42 can be inserted into the brake groove. Specifically, a plurality of brake plates spaced apart vertically define a plurality of brake grooves.

[0047] According to an embodiment of the ship unloader of the present invention, the first driver 3 can drive the lifting block 21 to move vertically via the lifting rope 31. Specifically, during the process of the lifting block 21 being moved vertically by the lifting rope 31, the top of the limit block 23 abuts against the bottom of the lifting plate 1, so that the limit block 23 limits the position of the lifting plate 1. At this moment (during normal operation), the limit block 23 is in the first position.

[0048] After the lifting rope 31 breaks, the lifting part can move downward relative to the lifting plate 1, that is, the limit block 23 moves downward relative to the lifting plate 1, so that the limit block 23 moves from the first position to the second position, and then the limit block 23 can drive the brake rod 42 to insert into the brake groove. The brake rod 42 inserted into the brake groove can be braked by the brake groove, so that the brake rod 42 and the lifting plate 1 connected to the brake rod 42 stop falling, so as to achieve the effect of protecting the lifting plate 1 and cargo, thereby reducing the loss of cargo and personnel and increasing the safety of the ship unloader.

[0049] Therefore, the ship unloader according to the embodiment of the present invention has the advantage of high safety.

[0050] like Figure 1 、 Figure 3 and Figure 4 As shown, in some embodiments, the brake rod 42 extends in a first direction. The brake rod 42 is positioned between the stop block 23 and the brake post 41 in the first direction, with the notch of the brake groove facing the brake rod 42. The stop block 23 has a first inclined surface 24 facing the brake rod 42, and the first inclined surface 24 is inclined from top to bottom away from the brake rod 42. The first direction can be a left-right direction, a front-back direction, a left-right direction, or an up-down direction, as indicated by the arrows in the figure. For example, the brake rod 42 extends in the left-right direction, is positioned between the stop block 23 and the brake post 41 in the left-right direction, and the notch of the brake groove faces the brake rod 42 in the left-right direction.

[0051] In some embodiments, the lifting portion includes a second elastic member, the upper and lower ends of which are connected to the bottom of the lifting plate 1 and the stop block 23, respectively. The second elastic member can elastically deform in the upper and lower directions so that the second elastic member can push the stop block 23 downward relative to the lifting plate 1. For example, the second elastic member is a spring and is mounted on the slide bar 22. The top of the second elastic member abuts the bottom of the lifting plate 1, and the bottom of the second elastic member abuts the stop block 23.

[0052] like Figures 1 to 4 As shown, the overload protection device includes a fixing frame 43 and a first elastic member 44 .

[0053] The fixing frame 43 is provided at the bottom of the lifting plate 1 , and the brake rod 42 is slidably provided on the fixing frame 43 along a first direction, so that the brake rod 42 can move relative to the lifting plate 1 in the first direction.

[0054] The first elastic member 44 can elastically deform in a first direction, driving the brake rod 42 against the first inclined surface 24. During movement of the stop block 23 from the first position to the second position, the first inclined surface 24 moves downward relative to the brake rod 42 to insert the brake rod 42 into the brake groove. Specifically, in the first position, the brake rod 42 abuts against the lower portion of the first inclined surface 24. After the stop block 23 moves from the first position to the second position, the brake rod 42 abuts against the upper portion of the first inclined surface 24, thereby causing the first inclined surface 24 to move the brake rod 42 in the first direction toward the brake groove, allowing the brake rod 42 to enter the brake groove, thereby preventing the brake rod 42 and the lifting plate 1 from falling. For example, the first elastic member 44 is a spring.

[0055] like Figures 1 to 4 As shown, in some embodiments, a compression plate 45 is provided at one end of the brake lever 42 adjacent to the stop block 23 in the first direction. The thickness of the compression plate 45 is oriented in the first direction, and both ends of the first elastic member 44 in the first direction are connected to the fixing frame 43 and the compression plate 45, respectively. In other words, the brake lever 42 is connected to the first elastic member 44 via the compression plate 45, and the brake lever 42 abuts against the first inclined surface 42 via the compression plate 45.

[0056] In some embodiments, both sides of the stopper 23 in the first direction have a first inclined surface 24, and the size of at least a portion of the stopper 23 in the first direction decreases from top to bottom. Specifically, the upper end of the first inclined surface 24 is the position where the size of the stopper 23 in the first direction is the largest.

[0057] There are two overload protection devices, with the two overload protection shafts located on either side of the stop block 23 in the first direction. Specifically, the stop block 23 is provided with brake posts 41 aligned with the two first inclined surfaces 24, a brake rod 42, a fixing bracket 43, a first elastic member 44, and a compression plate 45 on either side of the first direction. This allows the two brake rods 42 to be inserted into the brake grooves on either side when the stop block 23 is lowered relative to the brake rods 42. For example, the stop block 23 has first inclined surfaces 24 on both its left and right sides, and the brake posts 41 aligned with the two first inclined surfaces 24, a brake rod 42, a fixing bracket 43, a first elastic member 44, and a compression plate 45 on its left and right sides.

[0058] like Figures 1 to 4 As shown, in some embodiments, a lifting box 11 is provided on the lifting plate 1, and the opening of the lifting box 11 faces upward. The lifting box 11 is used to place goods and protect the goods, thereby preventing the goods from falling.

[0059] In some embodiments, the lifting platform 1 is provided with a clamping device comprising a clamping plate positioned within the lifting box 11. The clamping plate has a horizontal thickness and is movable in the horizontal direction. After placing cargo within the lifting box 11, the clamping plate moves horizontally and abuts against the cargo, further securing the cargo. For example, a telescopic rod can be used to drive the clamping plate to move horizontally.

[0060] In some embodiments, there are two clamping plates, including a first clamping plate 12 and a second clamping plate 13. The first clamping plate 12 and the second clamping plate 13 are disposed opposite each other and are movable relative to each other. In other words, after placing cargo in the lifting box 11, the cargo can be clamped between the first clamping plate 12 and the second clamping plate 13.

[0061] like Figure 1 and Figure 2 As shown, in some embodiments, the first clamping plate 12 and the second clamping plate 13 are arranged relative to each other in a first direction, and the thickness direction of the first clamping plate 12 and the thickness direction of the second clamping plate 13 are the first direction. For example, the first clamping plate 12 and the second clamping plate 13 are arranged relative to each other in the left-right direction, and the thickness direction of the first clamping plate 12 and the thickness direction of the second clamping plate 13 are the left-right direction, and the first clamping plate 12 and the second clamping plate 13 can move relative to each other in the left-right direction.

[0062] The clamping device further includes a second driver 5 , a worm 53 , a first rotating shaft 51 , a second rotating shaft 52 , a first connecting rod 54 , a first guide rod 55 , a first transmission rod 56 , a second connecting rod 57 , a second guide rod 58 and a second transmission rod 59 .

[0063] like Figures 1 to 4 As shown, the second driver 5 is provided on the lifting plate 1. The second driver 5 can be a motor.

[0064] The first rotating shaft 51 and the second rotating shaft 52 both extend in the vertical direction. The first rotating shaft 51 and the second rotating shaft 52 are spaced apart in the first direction. The first rotating shaft 51 and the second rotating shaft 52 are both rotatably mounted on the lifting plate 1. Worm gears are provided on the first rotating shaft 51 and the second rotating shaft 52. For example, the first rotating shaft 51 and the second rotating shaft 52 are located on opposite sides of the second driver 5 in the left-right direction.

[0065] The worm 53 is axially oriented in a first direction and is rotatably mounted on the lifting plate 1. The second driver 5 drives the worm 53 to rotate via gears, and the worm 53 and the worm wheels on the first and second rotating shafts 51, 52 form a worm-gear transmission. For example, the output shaft of the second driver 5 has an axial direction that is vertical, and the second driver 5 drives the worm 53 to rotate via meshing bevel gears. Threads are provided on both the left and right ends of the worm 53 to respectively form a worm-gear transmission with the worm wheels on the first and second rotating shafts 51, 52. Consequently, the first driver 5 can drive the first and second rotating shafts 51, 52 to rotate via the worm 53, with the first and second rotating shafts 51, 52 rotating in opposite directions.

[0066] The first connecting rod 54 extends in a first direction, and the first guide rod 55 extends in a second direction. The first guide rod 55 has a first guide hole extending therethrough in a vertical direction. The length of the first guide hole is oriented in the first direction, which is perpendicular to the second direction. The first connecting rod 54 is slidably mounted on the lifting box 11 in the first direction. The ends of the first connecting rod 54 are connected to the first guide rod 55 and the first clamping plate 12, respectively. One end of the first transmission rod 56 is mounted on the first rotating shaft 51. The other end of the first transmission rod 56 is provided with a guide post 60 extending into the first guide hole. The guide post 60 extends in the vertical direction. Thus, when the first rotating shaft 51 rotates, it can drive the first transmission rod 56 to swing. When the first transmission rod 56 swings, the guide post 60 on the first transmission rod 56 moves, which can drive the first guide rod 55 to move in the first direction, thereby driving the first connecting rod 54 and the first clamping plate 12 connected to the first connecting rod 54 to move. In other words, the second driver 5 can drive the first clamping plate 12 to move in the first direction through the transmission of the worm gear 53, the first rotating shaft 51, the first connecting rod 54, the first guide rod 55, and the first transmission rod 56. The second direction can be a front-to-back direction. For example, the length direction of the first guide hole is the front-to-back direction, and the left and right ends of the first connecting rod 54 are respectively connected to the first guide rod 55 and the first clamping plate 12.

[0067] The second connecting rod 57 extends along the first direction, the second guide rod 58 extends along the second direction, the second guide rod 58 has a second guide hole running through it in the up and down directions, the length direction of the second guide hole is the first direction, the first direction is perpendicular to the second direction, the second connecting rod 57 is slidably provided on the lifting box 11 along the first direction, the two ends of the second connecting rod 57 are respectively connected to the second guide rod 58 and the second clamping plate 13, one end of the second transmission rod 59 is provided on the second rotating shaft 52, and the other end of the second transmission rod 59 is provided with a guide column 60 extending into the second guide hole, and the guide column 60 extends in the up and down directions. Thus, when the second rotating shaft 52 rotates, it can drive the second transmission rod 59 to swing. When the second transmission rod 59 swings, the guide post 60 on the second transmission rod 59 moves and can drive the second guide rod 58 to move in the first direction, thereby driving the second connecting rod 57 and the second clamping plate 13 connected to the second connecting rod 57 to move. In other words, the second driver 5 can drive the second clamping plate 13 to move in the first direction through the transmission of the worm 53, the second rotating shaft 52, the second connecting rod 57, the second guide rod 58, the second transmission rod 59, and the guide post 60. For example, the length direction of the second guide hole is the front-to-back direction, and the left and right ends of the second connecting rod 57 are respectively connected to the second guide rod 58 and the second clamping plate 13.

[0068] like Figure 1 As shown, in some implementations, the ship unloader further includes a bottom plate 7 and a column 71 .

[0069] The first actuator 3 is mounted on the base plate 7. A column 71 extends vertically. The bottom of the column 71 is mounted on the base plate 7. A guide wheel 72 is mounted on the top of the column 71. The suspension rope 31 is mounted on the guide wheel 72. The lifting plate 1 is slidably mounted vertically on the column 71. Thus, when the shaft of the first actuator 3 rotates, the suspension rope 31 moves, thereby driving the lifting plate 1 to move vertically.

[0070] In some implementations, the upright 71 has a vertically extending slot, with its opening facing the lifting plate 1. The lifting plate 1 is provided with a sliding portion 14, which is vertically movable within the slot. This provides greater stability during movement of the lifting plate 1 and facilitates downward movement of the lifting portion relative to the lifting plate 1 after the suspension rope 31 breaks.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0073] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0074] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0075] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0076] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A ship unloader, characterized in that: include: a lifting plate, wherein the thickness direction of the lifting plate is the up-down direction, the lifting plate has a sliding hole passing through the lifting plate in the up-down direction, and the lifting plate is used for loading cargo; The lifting portion includes a lifting block, a sliding rod and a limiting block, the sliding rod being slidably arranged in the sliding hole along the up and down directions, the lifting block being located above the lifting plate and connected to the sliding rod, the limiting block being located below the lifting plate and connected to the sliding rod so that the limiting block has a first position and a second position, in the first position, the limiting block abuts against the lifting plate, and in the second position, the limiting block is spaced apart from the lifting plate; a first driver, a guide wheel, and a sling, wherein the sling is hung on the guide wheel, and both ends of the sling are connected to the first driver and the lifting block respectively, and the first driver can drive the lifting block to move in the up and down directions through the sling; An overload protection device, the overload protection device comprising a brake column and a brake rod, the brake column extending in the up-down direction, the brake column having a plurality of brake grooves sequentially arranged in the up-down direction, the brake rod being movably arranged in the horizontal direction on the lifting plate, and the limit block being able to drive the brake rod to move in the horizontal direction toward the brake groove during the process of the limit block moving from the first position to the second position so that the brake rod is inserted into the brake groove; The brake rod extends along a first direction; The brake rod is located between the limiting block and the brake column in the first direction, the notch of the brake groove faces the brake rod, and the limiting block has a first inclined surface facing the brake rod, and the first inclined surface is inclined from top to bottom in a direction away from the brake rod; The overload protection device includes a fixing frame and a first elastic member, wherein the fixing frame is provided at the bottom of the lifting plate, the brake rod is slidably provided on the fixing frame along the first direction, the first elastic member can be elastically deformed in the first direction, and the first elastic member can drive the brake rod to rest against the first inclined surface. When the limit block moves from the first position to the second position, the first inclined surface moves downward relative to the brake rod so that the brake rod is inserted into the brake groove. An extrusion plate is provided at one end of the brake rod adjacent to the limit block in the first direction, the thickness direction of the extrusion plate is in the first direction, and both ends of the first elastic member in the first direction are connected to the fixing frame and the extrusion plate respectively; The ship unloader further comprises: a bottom plate, wherein the first driver is disposed on the bottom plate; The column extends in the up-down direction, the bottom of the column is arranged on the base plate, the top of the column is provided with the guide wheel, and the lifting plate is slidably provided on the column in the up-down direction; the column has a slide groove extending in the up-down direction, the opening of the slide groove faces the lifting plate, and the lifting plate is provided with a sliding part, and the sliding part is movably provided in the slide groove in the up-down direction.

2. The ship unloader according to claim 1, characterized in that: The lifting portion includes a second elastic member, the upper and lower ends of which are respectively connected to the bottom of the lifting plate and the limit block, and the second elastic member can be elastically deformed in the upper and lower directions; Both sides of the limiting block in the first direction have the first inclined surfaces, and the size of at least a portion of the limiting block in the first direction decreases from top to bottom; There are two overload protection devices, and the two overload protection rotating shafts are located on both sides of the limit block in the first direction.

3. The ship unloader according to claim 1, characterized in that: A lifting box is provided on the lifting plate, and an opening of the lifting box faces upward.

4. The ship unloader according to claim 3, characterized in that: The lifting plate is provided with a clamping device, and the clamping device includes a clamping plate. The clamping plate is located in the lifting box, the thickness direction of the clamping plate is horizontal, and the clamping plate can move in the horizontal direction.

5. The ship unloader according to claim 4, characterized in that: There are two clamping plates, and the two clamping plates include a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are arranged opposite to each other, and the first clamping plate and the second clamping plate can move relatively.

6. The ship unloader according to claim 5, characterized in that: The first clamping plate and the second clamping plate are arranged opposite to each other in a first direction, and the thickness direction of the first clamping plate and the thickness direction of the second clamping plate are the first direction; The clamping device also includes a second driver disposed on the lifting plate; a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft both extend in the up-down direction, are spaced apart in the first direction, are rotatably mounted on the lifting plate, and are each provided with a worm gear; a worm, wherein the axial direction of the worm is the first direction, the worm is rotatably provided on the lifting plate, the second driver drives the worm to rotate via a gear, and the worm performs worm gear transmission with the worm wheels on the first rotating shaft and the second rotating shaft; a first connecting rod, a first guide rod and a first transmission rod, wherein the first connecting rod extends along the first direction, the first guide rod extends along the second direction, the first guide rod has a first guide hole extending therethrough in an up-down direction, the length direction of the first guide hole is the first direction, the first direction is perpendicular to the second direction, the first connecting rod is slidably provided on the lifting box along the first direction, the two ends of the first connecting rod are respectively connected to the first guide rod and the first clamping plate, one end of the first transmission rod is provided on the first rotating shaft, the other end of the first transmission rod is provided with a guide column extending into the first guide hole, the guide column extending in the up-down direction; A second connecting rod, a second guide rod and a second transmission rod, the second connecting rod extends along the first direction, the second guide rod extends along the second direction, the second guide rod has a second guide hole running through it in the up and down directions, the length direction of the second guide hole is the first direction, the first direction is perpendicular to the second direction, the second connecting rod is slidably arranged on the lifting box along the first direction, the two ends of the second connecting rod are respectively connected to the second guide rod and the second clamping plate, one end of the second transmission rod is arranged on the second rotating shaft, and the other end of the second transmission rod is provided with a guide column extending into the second guide hole, and the guide column extends in the up and down directions.

Images