CN220702946U - Grab bucket overload protection device and ship unloader - Google Patents
Grab bucket overload protection device and ship unloader Download PDFInfo
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- CN220702946U CN220702946U CN202322216763.7U CN202322216763U CN220702946U CN 220702946 U CN220702946 U CN 220702946U CN 202322216763 U CN202322216763 U CN 202322216763U CN 220702946 U CN220702946 U CN 220702946U
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Abstract
The utility model provides a grab bucket overload protection device and a ship unloader. The utility model relates to a grab bucket overload protection device, which comprises: the thickness direction of the lifting plate is the up-down direction, the lifting plate is provided with a sliding hole penetrating the lifting plate along the up-down direction, and the lifting plate is used for loading cargoes and can move in the up-down direction; the lifting part comprises a lifting block, a sliding rod and a limiting block, wherein the sliding rod is slidably arranged in the sliding hole along the up-down direction, and the lifting block is positioned above the lifting plate and connected with the sliding rod; the overload protection device comprises a brake column and a brake rod, wherein the brake column extends along the up-down direction, the brake column is provided with a plurality of brake grooves which are sequentially arranged along the up-down direction, the brake rod is movably arranged on the lifting plate along the horizontal direction, and the limiting block can drive the brake rod to move towards the direction of the brake grooves along the horizontal direction so that the brake rod can be inserted into the brake grooves. Therefore, the grab bucket overload protection device has the advantage of high safety.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a grab bucket overload protection device and a ship unloader.
Background
In bulk cargo wharfs in China, the bridge grab ship unloader is used as important receiving and unloading equipment of the front edge of the bulk cargo wharfs, and plays a great role in daily operation of the port wharfs. The grab bucket ship unloader consists of front and rear door frames, front and rear girder, front and rear horizontal truss, front and rear pull rod, small door frame, diagonal brace, side truss, machine table, hopper and support, etc. and is suitable for coal unloading operation of middle and small port ship unloading or power station and dock ship. The grab bucket overload protection device with reasonable design has important significance for improving the use efficiency of the bridge type grab bucket ship unloader and protecting equipment. However, the following disadvantages exist in the practical application process: the security is relatively poor, and when wire rope accident fracture, the goods can directly fall to ground and scatter, causes the damage to personnel and goods.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the utility model provides a grab bucket overload protection device and a ship unloader.
The grab bucket overload protection device provided by the embodiment of the utility model comprises:
a lift plate having a slide hole penetrating therethrough in an up-down direction, the lift plate being for loading cargo and being movable in the up-down direction, the thickness direction of the lift plate being the up-down direction;
the lifting part comprises a lifting block, a sliding rod and a limiting block, wherein the sliding rod is slidably arranged in the sliding hole along the up-down direction, the lifting block is positioned above the lifting plate and connected with the sliding rod, the limiting block is positioned below the lifting plate and connected with the sliding rod so that the limiting block has a first position and a second position, the limiting block is abutted with the lifting plate in the first position, and the limiting block is arranged at intervals with the lifting plate in the second position;
the overload protection device comprises a brake column and a brake rod, the brake column extends along the up-down direction, the brake column is provided with a plurality of brake grooves which are sequentially arranged along the up-down direction, the brake rod is movably arranged on the lifting plate along the horizontal direction, and the brake rod can be driven to move towards the direction of the brake groove along the horizontal direction in the process that the brake block moves from the first position to the second position, so that the brake rod is inserted into the brake groove.
Therefore, the grab bucket overload protection device provided by the embodiment of the utility model has the advantage of high safety.
In some embodiments, a lifting box is provided on the lifting plate, with the opening of the lifting box facing upwards.
In some embodiments, the lifting plate is provided with a clamping device, the clamping device comprises a clamping plate, the clamping plate is located in the lifting box, the thickness direction of the clamping plate is a horizontal direction, and the clamping plate can move in the horizontal direction.
In some embodiments, the clamping plates are two, the two clamping plates comprise a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged, and the first clamping plate and the second clamping plate can relatively move.
In some embodiments, the first clamping plate and the second clamping plate are disposed opposite each other in a first direction, the thickness direction of the first clamping plate and the thickness direction of the second clamping plate being the first direction;
the clamping device also comprises
A second driver provided on the lift plate;
the first rotating shaft and the second rotating shaft extend along the up-down direction, the first rotating shaft and the second rotating shaft are arranged at intervals in the first direction, the first rotating shaft and the second rotating shaft are rotatably arranged on the lifting plate, and worm gears are arranged on the first rotating shaft and the second rotating shaft;
the axial direction of the worm is the first direction, the worm is rotatably arranged on the lifting plate, the second driver drives the worm to rotate through a gear, and the worm and worm wheels on the first rotating shaft and the second rotating shaft are subjected to worm gear transmission;
the lifting box comprises 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 is provided with a first guide hole penetrating through the first guide rod along the 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 arranged on the lifting box along the first direction, two ends of the first connecting rod are respectively connected with the first guide rod and the first clamping plate, one end of the first transmission rod is arranged on the first rotating shaft, and the other end of the first transmission rod is provided with a guide column extending into the first guide hole and extends along the up-down direction;
the second connecting rod extends along the first direction, the second guide rod extends along the second direction, the second guide rod is provided with a second guide hole penetrating through the second guide rod along the up-down direction, 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, two ends of the second connecting rod are respectively connected with 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 extending along the up-down direction.
In some embodiments, the brake lever extends in a first direction;
the brake lever is positioned between the limiting block and the brake column in the first direction, the notch of the brake groove faces the brake lever, the limiting block is provided with a first inclined surface facing the brake lever, and the first inclined surface is obliquely arranged from top to bottom in a direction away from the brake lever;
the overload protection device comprises a fixing frame and a first elastic piece, 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 piece can elastically deform in the first direction, the first elastic piece can drive the brake rod to abut against the first inclined surface, and the first inclined surface moves downwards relative to the brake rod so as to insert the brake rod into the brake groove in the process that the limiting block moves from the first position to the second position.
In some embodiments, the brake lever is provided with an extrusion plate at one end adjacent to the limiting block in the first direction, the thickness direction of the extrusion plate is the first direction, and two ends of the first elastic piece in the first direction are respectively connected with the fixing frame and the extrusion plate.
In some embodiments, the lifting part includes a second elastic member, and upper and lower ends of the second elastic member are respectively connected to the bottom of the lifting plate and the stopper, and the second elastic member is elastically deformable in an up-down direction;
the two sides of the limiting block in the first direction are provided with the first inclined planes, and the size of at least part of the limiting block in the first direction is reduced from top to bottom;
the number of the overload protection devices is two, and the two overload protection devices are positioned on two sides of the limiting block in the first direction.
The utility model also provides a ship unloader, which comprises
The grab bucket overload protection device is the grab bucket overload protection device;
the lifting device comprises a first driver and a lifting rope, wherein two ends of the lifting rope are respectively connected with the first driver and a lifting block of a lifting part of the grab bucket overload protection device, and the first driver can drive the lifting block to move along the up-down direction through the lifting rope.
The ship unloader of the utility model further comprises
The first driver is arranged on the bottom plate;
the stand, the stand extends along the upper and lower direction, the bottom of stand is established on the bottom plate, the top of stand is equipped with the guide pulley, the lifting rope hangs and establishes on the guide pulley, the lifting plate is in along upper and lower direction slidable ground is established on the stand.
Drawings
Fig. 1 is a schematic view of a ship unloader according to an embodiment of the present utility model.
Fig. 2 is an enlarged view of a portion a in fig. 1.
FIG. 3 is a schematic view of a stopper and brake post according to an embodiment of the present utility model.
FIG. 4 is a schematic view of a stopper and brake post according to an embodiment of the present utility model.
Reference numerals:
a ship unloader;
a lifting plate 1, a lifting box 11, a first clamping plate 12, a second clamping plate 13, and a sliding part 14;
the lifting block 21, the sliding rod 22, the limiting block 23 and the first inclined plane 24;
a first driver 3, a hoist rope 31;
a brake column 41, a brake lever 42, a fixing frame 43, a first elastic member 44, and a pressing plate 45;
the second driver 5, the first rotating shaft 51, the second rotating shaft 52, the worm 53, the first connecting rod 54, the first guide rod 55, the first transmission rod 56, the second connecting rod 57, the second guide rod 58, the second transmission rod 59 and the guide post 60;
the bottom plate 7, the upright post 71 and the guide wheel 72.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The following describes a grab bucket overload protection device according to an embodiment of the present utility model with reference to the accompanying drawings. As shown in fig. 1 to 4, the grab bucket overload protection apparatus according to the embodiment of the present utility model includes a lifting plate 1, a lifting portion, and an overload protection apparatus.
The thickness direction of the lifting plate 1 is the up-down direction, the lifting plate 1 has a slide hole penetrating therethrough in the up-down direction, and the lifting plate 1 is used for loading the cargo and is movable in the up-down direction, so that the lifting plate 1 can be made to facilitate lifting of the cargo.
The lifting part comprises a lifting block 21, a sliding rod 22 and a limiting block 23. The slide bar 22 is slidably arranged in the slide hole along the up-down direction, the lifting block 21 is arranged above the lifting plate 1 and connected with the slide bar 22, and the limiting block 23 is arranged below the lifting plate 1 and connected with the slide bar 22, so that the limiting block 23 has a first position and a second position, the limiting block 23 is abutted with the lifting plate 1 in the first position, and the limiting block 23 is arranged at intervals with the lifting plate 1 in the second position. Specifically, the outer diameters of the lifting block 21 and the stopper 23 are both larger than the inner diameter of the slide hole, so that the lifting block 21 and the stopper 23 cannot pass through the slide hole.
The overload protection device includes a brake column 41 and a brake lever 42, the brake column 41 extending in the up-down direction, the brake column 41 having a plurality of brake grooves provided in sequence in the up-down direction, the brake lever 42 being provided on the lift plate 1 movably in the horizontal direction. During the movement of the stopper 23 from the first position to the second position, the stopper 23 may drive the brake lever 42 to move in the horizontal direction toward the brake slot so that the brake lever 42 is inserted into the brake slot. Specifically, a plurality of brake plates disposed at intervals in the up-down direction define a plurality of brake grooves.
In the process of moving the lifting block 21 of the grab bucket overload protection device in the up-down direction, the top of the limiting block 23 is abutted with the bottom of the lifting plate 1, so that the limiting block 23 limits the lifting plate 1. At this point (during normal operation), the stopper 23 is in the first position.
When the lifting plate 1 falls due to overload, the lifting part can move downwards relative to the lifting plate 1, namely, the limiting block 23 moves downwards relative to the lifting plate 1, so that the limiting block 23 moves from the first position to the second position, the limiting block 23 can drive the brake rod 42 to be inserted into the brake groove, the brake rod 42 inserted into the brake groove can be braked by the brake groove, and the brake rod 42 and the lifting plate 1 connected with the brake rod 42 can stop falling, so that the effect of protecting the lifting plate 1 and cargoes is achieved, loss of cargoes and personnel is reduced, and the safety of the ship unloader is improved.
Therefore, the grab bucket overload protection device provided by the embodiment of the utility model has the advantage of high safety.
The utility model also provides a ship unloader, which comprises the grab bucket overload protection device, the first driver 3 and the lifting rope 31.
The two ends of the lifting rope 31 are respectively connected with the first driver 3 and the lifting block 21 of the lifting part of the grab bucket overload protection device according to the embodiment of the utility model, and the first driver 3 can drive the lifting block 21 to move up and down through the lifting rope 31.
The first driver 3 can drive the lifting block 21 to move along the up-down direction through the lifting rope 31, specifically, in the process that the lifting block 21 is driven by the lifting rope 31 to move along the up-down direction, the top of the limiting block 23 is abutted with the bottom of the lifting plate 1, so that the limiting block 23 limits the lifting plate 1. At this point (during normal operation), the stopper 23 is in the first position.
After the lifting rope 31 is broken, the lifting part can move downwards relative to the lifting plate 1, namely, the limiting block 23 moves downwards relative to the lifting plate 1, so that the limiting block moves from the first position to the second position, the limiting block 23 can drive the brake rod 42 to be inserted into the brake groove, the brake rod 42 inserted into the brake groove can be braked by the brake groove, and the brake rod 42 and the lifting plate 1 connected with the brake rod 42 can stop falling, so that the effect of protecting the lifting plate 1 and cargoes is achieved, loss of cargoes and personnel is reduced, and the safety of the ship unloader is improved.
Therefore, the ship unloader provided by the embodiment of the utility model has the advantage of high safety.
As shown in fig. 1, 3, and 4, in some embodiments, the brake lever 42 extends in a first direction. The brake lever 42 is located between the stopper 23 and the brake post 41 in the first direction, the notch of the brake groove faces the brake lever 42, the stopper 23 has a first inclined surface 24 facing the brake lever 42, and the first inclined surface 24 is inclined from top to bottom in a direction away from the brake lever 42. The first direction may be a left-right direction, and the front-back direction, the left-right direction, and the up-down direction are indicated by arrows in the figure. For example, the brake lever 42 extends in the left-right direction, the brake lever 42 is located between the stopper 23 and the brake post 41 in the left-right direction, and the notch of the brake groove faces the brake lever 42 in the left-right direction.
In some embodiments, the lifting portion includes a second elastic member, and upper and lower ends of the second elastic member are respectively connected to the bottom of the lifting plate 1 and the stopper 23, and the second elastic member is elastically deformed in an up-down direction so that the second elastic member can push the stopper 23 downward with respect to the lifting plate 1. For example, the second elastic member is a spring and is sleeved on the slide rod 22, the top of the second elastic member is abutted with the bottom of the lifting plate 1, and the bottom of the second elastic member is abutted with the limiting block 23.
As shown in fig. 1 to 4, the overload protection apparatus includes a fixing frame 43 and a first elastic member 44.
The fixing frame 43 is provided at the bottom of the lift plate 1, and the brake lever 42 is slidably provided on the fixing frame 43 in the first direction so that the brake lever 42 can move in the first direction with respect to the lift plate 1.
The first elastic member 44 is elastically deformable in the first direction, and the first elastic member 44 can drive the brake lever 42 to abut against the first inclined surface 24, and in the process of moving the stopper 23 from the first position to the second position, the first inclined surface 24 moves downward relative to the brake lever 42 so as to insert the brake lever 42 into the brake slot. Specifically, in the first position, the brake lever 42 abuts against the lower portion of the first inclined surface 24, and after the stopper 23 is moved from the first position to the second position, the brake lever 42 abuts against the upper portion of the first inclined surface 24, so that the first inclined surface 24 can move the brake lever 42 in the first direction in the direction adjacent to the brake groove, so that the brake lever 42 enters the brake groove, and the brake lever 42 and the lift plate 1 no longer fall. For example, the first elastic member 44 is a spring.
As shown in fig. 1 to 4, in some embodiments, the brake lever 42 is provided with a pressing plate 45 adjacent to one end of the stopper 23 in a first direction, a thickness direction of the pressing plate 45 is the first direction, and two ends of the first elastic member 44 in the first direction are respectively connected to the fixing frame 43 and the pressing plate 45. That is, the brake lever 42 is connected to the first elastic member 44 through the pressing plate 45, and the brake lever 42 abuts against the first inclined surface 42 through the pressing plate 45.
In some embodiments, the stopper 23 has a first slope 24 on both sides in the first direction, and at least part of the stopper 23 decreases in size from top to bottom in the first direction. Specifically, the upper end portion of the first inclined surface 24 is a position where the dimension of the positioning block 23 in the first direction is maximum.
The number of the overload protection devices is two, and the two overload protection devices are positioned on two sides of the limiting block 23 in the first direction. That is, the stopper 23 is provided with a brake post 41, a brake lever 42, a fixing frame 43, a first elastic member 44, and a pressing plate 45, which are associated with the two first inclined surfaces 24, respectively, on both sides in the first direction. Therefore, when the limiting block 23 descends relative to the brake rods 42, the two brake rods 42 can be respectively inserted into the brake grooves on the two sides. For example, the stopper 23 has first inclined surfaces 24 on both left and right sides, and the stopper 23 has a brake post 41, a brake lever 42, a fixing frame 43, a first elastic member 44, and a pressing plate 45, which are respectively disposed on both left and right sides of the stopper 24.
As shown in fig. 1 to 4, in some embodiments, the lift plate 1 is provided with a lift box 11, and an opening of the lift box 11 is directed to an upper side. The lifting box 11 is used for placing goods and protecting the goods, thereby preventing the goods from falling.
In some embodiments, the lifting plate 1 is provided with a clamping device, the clamping device comprises a clamping plate, the clamping plate is located in the lifting box 11, the thickness direction of the clamping plate is horizontal, and the clamping plate can move in the horizontal direction. After placing the goods in the lifting box 11, the clamping plate moves in the horizontal direction and abuts against the goods, so that the goods can be further fixed. For example, the clamping plate can be driven to move in the horizontal direction by using the telescopic rod.
In some embodiments, the two clamping plates include 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 to each other, and the first clamping plate 12 and the second clamping plate 13 are relatively movable. That is, after the goods are placed in the lift box 11, the goods may be clamped between the first clamping plate 12 and the second clamping plate 13.
As shown in fig. 1 and 2, in some embodiments, the first clamping plate 12 and the second clamping plate 13 are disposed opposite to each other in the 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 disposed opposite to each other in the left-right direction, 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 are relatively movable in the left-right direction.
The clamping device further comprises a second driver 5, a worm 53, a first rotation shaft 51, a second rotation shaft 52, a first connecting rod 54, a first guiding rod 55, a first transmission rod 56, a second connecting rod 57, a second guiding rod 58 and a second transmission rod 59.
As shown in fig. 1 to 4, a second driver 5 is provided on the lift plate 1. The second driver 5 may be a motor.
The first rotating shaft 51 and the second rotating shaft 52 extend along the up-down direction, the first rotating shaft 51 and the second rotating shaft 52 are arranged at intervals in the first direction, the first rotating shaft 51 and the second rotating shaft 52 are rotatably arranged on the lifting plate 1, and worm gears are arranged on the first rotating shaft 51 and the second rotating shaft 52. For example, the first shaft 51 and the second shaft 52 are located on both sides of the second driver 5 in the left-right direction.
The axial direction of the worm 53 is a first direction, the worm 53 is rotatably arranged on the lifting plate 1, the second driver 5 drives the worm 53 to rotate through a gear, and the worm 53 and worm gears on the first rotating shaft 51 and the second rotating shaft 52 perform worm gear 53 transmission. For example, the axial direction of the output shaft of the second driver 5 is the up-down direction, and the second driver 5 drives the worm 53 to rotate by means of bevel gears engaged with each other. Threads are arranged at the left and right ends of the worm 53 so as to respectively drive the worm gear 53 with worm gears on the first rotating shaft 51 and the second rotating shaft 52. So that the first driver 5 can drive the first rotating shaft 51 and the second rotating shaft 52 to rotate through the worm 53 respectively, and the rotating directions of the first rotating shaft 51 and the second rotating shaft 52 are opposite.
The first connecting rod 54 extends in a first direction, the first guide rod 55 extends in a second direction, the first guide rod 55 has a first guide hole penetrating therethrough in an up-down direction, a length direction of the first guide hole is a first direction, and the first direction is perpendicular to the second direction. The first connecting rod 54 is slidably provided on the lift box 11 in a first direction, and both 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 provided on the first rotating shaft 51, and 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 extending in the up-down direction. Therefore, the first rotating shaft 51 can drive the first transmission rod 56 to swing when rotating, and the guide post 60 on the first transmission rod 56 can drive the first guide rod 55 to move in the first direction when the first transmission rod 56 swings, so as to drive the first connecting rod 54 and the first clamping plate 12 connected with the first connecting rod 54 to move, namely, the second driver 5 can drive the first clamping plate 12 to move in the first direction through the transmission of the worm 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 may be a front-to-back direction. For example, the longitudinal direction of the first guide hole is the front-rear direction, and both left and right ends of the first connecting rod 54 are connected to the first guide rod 55 and the first clamp plate 12, respectively.
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 is provided with a second guide hole penetrating through the second guide rod 58 along the up-down direction, 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 arranged on the lifting box 11 along the first direction, two ends of the second connecting rod 57 are respectively connected with the second guide rod 58 and the second clamping plate 13, one end of the second transmission rod 59 is arranged on the second rotating shaft 52, the other end of the second transmission rod 59 is provided with a guide post 60 extending into the second guide hole, and the guide post 60 extends along the up-down direction. Therefore, the second rotating shaft 52 can drive the second transmission rod 59 to swing when rotating, and the guide post 60 on the second transmission rod 59 can drive the second guide rod 58 to move in the first direction when the second transmission rod 59 swings, so as to drive the second connecting rod 57 and the second clamping plate 13 connected with the second connecting rod 57 to move, that is, 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-rear direction, and both left and right ends of the second connecting rod 57 are connected to the second guide rod 58 and the second clamp plate 13, respectively.
As shown in fig. 1, in some implementations, the ship unloader further includes a floor 7 and a column 71.
The first driver 3 is provided on the bottom plate 7, the upright 71 extends in the up-down direction, the bottom of the upright 71 is provided on the bottom plate 7, the top of the upright 71 is provided with a guide wheel 72, the hoist rope 31 is hung on the guide wheel 72, and the hoist plate 1 is slidably provided on the upright 71 in the up-down direction. Thereby, the rotation shaft of the first driver 3 can drive the lifting rope 31 to move when rotating, so as to drive the lifting plate 1 to move along the up-down direction.
In some embodiments, the upright 71 has a chute extending in the up-down direction, the opening of the chute faces the lift plate 1, a sliding portion 14 is provided on the lift plate 1, and the sliding portion 14 is provided in the chute so as to be movable in the up-down direction. Thereby making the lifting plate 1 more stable when moving. And may be such that the lifting portion may facilitate downward movement relative to the lifting plate 1 after breakage of the lifting rope 31.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.
Claims (10)
1. A grab bucket overload protection device, comprising:
a lift plate having a slide hole penetrating therethrough in an up-down direction, the lift plate being for loading cargo and being movable in the up-down direction, the thickness direction of the lift plate being the up-down direction;
the lifting part comprises a lifting block, a sliding rod and a limiting block, wherein the sliding rod is slidably arranged in the sliding hole along the up-down direction, the lifting block is positioned above the lifting plate and connected with the sliding rod, the limiting block is positioned below the lifting plate and connected with the sliding rod so that the limiting block has a first position and a second position, the limiting block is abutted with the lifting plate in the first position, and the limiting block is arranged at intervals with the lifting plate in the second position;
the overload protection device comprises a brake column and a brake rod, the brake column extends along the up-down direction, the brake column is provided with a plurality of brake grooves which are sequentially arranged along the up-down direction, the brake rod is movably arranged on the lifting plate along the horizontal direction, and the brake rod can be driven to move towards the direction of the brake groove along the horizontal direction in the process that the brake block moves from the first position to the second position, so that the brake rod is inserted into the brake groove.
2. The grab overload protection device according to claim 1, wherein a lifting box is arranged on the lifting plate, and an opening of the lifting box faces to the upper side.
3. The grab bucket overload protection device according to claim 2, wherein the lifting plate is provided with a clamping device, the clamping device comprises a clamping plate, the clamping plate is located in the lifting box, the thickness direction of the clamping plate is a horizontal direction, and the clamping plate can move in the horizontal direction.
4. The grab bucket overload protection device according to claim 3, wherein the number of the clamping plates is two, the two clamping plates comprise a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged, and the first clamping plate and the second clamping plate can relatively move.
5. The grab bucket overload protection device according to claim 4, wherein,
the first clamping plate and the second clamping plate are oppositely arranged 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 comprises
A second driver provided on the lift plate;
the first rotating shaft and the second rotating shaft extend along the up-down direction, the first rotating shaft and the second rotating shaft are arranged at intervals in the first direction, the first rotating shaft and the second rotating shaft are rotatably arranged on the lifting plate, and worm gears are arranged on the first rotating shaft and the second rotating shaft;
the axial direction of the worm is the first direction, the worm is rotatably arranged on the lifting plate, the second driver drives the worm to rotate through a gear, and the worm and worm wheels on the first rotating shaft and the second rotating shaft are subjected to worm gear transmission;
the lifting box comprises 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 is provided with a first guide hole penetrating through the first guide rod along the 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 arranged on the lifting box along the first direction, two ends of the first connecting rod are respectively connected with the first guide rod and the first clamping plate, one end of the first transmission rod is arranged on the first rotating shaft, and the other end of the first transmission rod is provided with a guide column extending into the first guide hole and extends along the up-down direction;
the second connecting rod extends along the first direction, the second guide rod extends along the second direction, the second guide rod is provided with a second guide hole penetrating through the second guide rod along the up-down direction, 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, two ends of the second connecting rod are respectively connected with 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 extending along the up-down direction.
6. The grab overload protection device according to any of claims 1 to 5, wherein,
the brake lever extends in a first direction;
the brake lever is positioned between the limiting block and the brake column in the first direction, the notch of the brake groove faces the brake lever, the limiting block is provided with a first inclined surface facing the brake lever, and the first inclined surface is obliquely arranged from top to bottom in a direction away from the brake lever;
the overload protection device comprises a fixing frame and a first elastic piece, 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 piece can elastically deform in the first direction, the first elastic piece can drive the brake rod to abut against the first inclined surface, and the first inclined surface moves downwards relative to the brake rod so as to insert the brake rod into the brake groove in the process that the limiting block moves from the first position to the second position.
7. The grab bucket overload protection device according to claim 6, wherein the brake lever is provided with an extrusion plate at one end adjacent to the limiting block in the first direction, the thickness direction of the extrusion plate is the first direction, and two ends of the first elastic piece in the first direction are respectively connected with the fixing frame and the extrusion plate.
8. The grab bucket overload protection device of claim 7, wherein,
the lifting part comprises a second elastic piece, the upper end and the lower end of the second elastic piece are respectively connected with the bottom of the lifting plate and the limiting block, and the second elastic piece can elastically deform in the up-down direction;
the two sides of the limiting block in the first direction are provided with the first inclined planes, and the size of at least part of the limiting block in the first direction is reduced from top to bottom;
the number of the overload protection devices is two, and the two overload protection devices are positioned on two sides of the limiting block in the first direction.
9. A ship unloader, which is characterized by comprising
A grab bucket overload protection device, which is the grab bucket overload protection device according to any one of claims 1-8;
the lifting device comprises a first driver and a lifting rope, wherein two ends of the lifting rope are respectively connected with the first driver and a lifting block of a lifting part of the grab bucket overload protection device, and the first driver can drive the lifting block to move along the up-down direction through the lifting rope.
10. The ship unloader of claim 9, further comprising
The first driver is arranged on the bottom plate;
the stand, the stand extends along upper and lower direction, the bottom of stand is established on the bottom plate, the lift plate is established along upper and lower direction slidable on the stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322216763.7U CN220702946U (en) | 2023-08-17 | 2023-08-17 | Grab bucket overload protection device and ship unloader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322216763.7U CN220702946U (en) | 2023-08-17 | 2023-08-17 | Grab bucket overload protection device and ship unloader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220702946U true CN220702946U (en) | 2024-04-02 |
Family
ID=90448645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322216763.7U Active CN220702946U (en) | 2023-08-17 | 2023-08-17 | Grab bucket overload protection device and ship unloader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220702946U (en) |
-
2023
- 2023-08-17 CN CN202322216763.7U patent/CN220702946U/en active Active
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