Swing telescopic lifting appliance and stacking machine

Abstract

The utility model discloses a swing telescopic lifting appliance and a stacking machine, which comprise a movable portal frame arranged in a fixed portal frame and lifted by a portal frame lifting machine, and are characterized in that the movable portal frame is provided with an extension connecting bracket extending outwards, and a telescopic lifting appliance is arranged at the bottom of the extension connecting bracket and is used for grabbing an empty box downwards; and the telescopic lifting appliance comprises a pair of transverse moving beams which are arranged in the bearing cross beam in a sliding manner and realize relative sliding through a chain wheel moving mechanism. On one hand, containers of different sizes are accurately adapted through a sliding structure of the transverse moving beam; on the second aspect, through the two-way swing design under cooperation of the stabilizer and the swing device, the driver is assisted in positioning, and the dependence on the operation proficiency is greatly reduced; in addition, the lifting appliance further has the damping deviation rectifying function, and the grabbing stability is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of container stackers, in particular to a swing telescopic sling and a stacker. Background Art

[0002] Figure 5 An existing empty container forklift was demonstrated, featuring a spreader configured to lift containers from the side. This spreader has a simple structure and lacks rotational freedom relative to the container, with only limited adaptability to the keyholes at the corners of the empty container. The driver must precisely maneuver the forklift to align the container keyholes or the desired stacking position. Unskilled drivers may need to maneuver the vehicle back and forth multiple times to achieve keyhole alignment before they can grab the container, resulting in low efficiency. The spreader's working dimensions are limited to a single size for the forklift, requiring the spreader to be replaced for containers of different sizes. Utility Model Content

[0003] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0004] A swinging telescopic spreader includes a movable gantry arranged in a fixed gantry and raised and lowered by a gantry lift; the movable gantry is provided with an outwardly extending extending connecting bracket; a telescopic spreader is placed at the bottom of the extending connecting bracket for grabbing empty boxes downward; the telescopic spreader includes a pair of transverse moving beams slidably arranged in a load-bearing crossbeam and realizing relative sliding through a sprocket moving mechanism.

[0005] In a preferred embodiment of the present invention, the transverse moving beam includes a first transverse moving beam and a second transverse moving beam arranged parallel to each other along the long side direction, and the first transverse moving beam and the second transverse moving beam are slidably engaged with each other through guides at their ends.

[0006] In a preferred embodiment of the present invention, a sliding groove is provided on one side where the first transverse moving beam and the second transverse moving beam are adjacent to each other, and one end of the guide is embedded in the sliding groove to realize the mutual sliding function between the first transverse moving beam and the second transverse moving beam.

[0007] In a preferred embodiment of the present invention, a sprocket moving mechanism is further provided in the load-bearing beam, and the sprocket moving mechanism controls the synchronous sliding of the first transverse moving beam and the second transverse moving beam through sprockets respectively connected to the first transverse moving beam and the second transverse moving beam.

[0008] In a preferred embodiment of the present invention, a hanging longitudinal beam is further provided at the end of the first transverse moving beam and the second transverse moving beam. The hanging longitudinal beam is located at the end away from the guide, and a turn pin lock is also provided at the end of the hanging longitudinal beam.

[0009] In a preferred embodiment of the present invention, a plurality of stabilizers are vertically provided on the extended connecting bracket, and the load-bearing beam is twisted to the bottom of the extended connecting bracket through the plurality of stabilizers. A first oscillator is also twisted between the load-bearing beam and the extended connecting bracket, and the first oscillator is connected to the top of the load-bearing beam to realize the translational swing of the load-bearing beam toward the first direction through telescoping.

[0010] In a preferred embodiment of the present invention, it also includes a second oscillator arranged between the load-bearing beam and the extended connecting bracket, at least one pair of the second oscillators are placed on both sides of the first oscillator, the second oscillator is perpendicular to the arrangement direction of the first oscillator, and the load-bearing beam is translated toward the second direction and rotated in the third direction by telescoping, and the second direction is perpendicular to the first direction.

[0011] In a preferred embodiment of the present invention, both ends of the stabilizer are connected to the load-bearing beam and the extended connecting bracket through a first and a second ball joint respectively, and the hinge axes of the first ball joint and the second ball joint are perpendicular to each other.

[0012] A forklift, a swing telescopic spreader as described in any one of the above.

[0013] The beneficial effects of the present invention are:

[0014] The utility model provides a swinging telescopic spreader and forklift. On the one hand, the sliding structure of the transverse moving beam can accurately adapt to containers of different sizes. On the other hand, the two-way swing design under the coordination of the stabilizer and the oscillator can assist the driver in positioning and greatly reduce the dependence on operating proficiency. In addition, the spreader also has a damping correction function to further ensure the stability of grasping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0016] Figure 1 It is a schematic diagram of the overall structure of the swing telescopic spreader and forklift.

[0017] Figure 2 This is a diagram from the other side.

[0018] Figure 3 yes Figure 1 Enlarged view of part a.

[0019] Figure 4 It is a structural diagram of the movable crossbeam and the suspended longitudinal beam.

[0020] Figure 5 It is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0022] The singular forms "a", "an", "said" and "the" used in the specification include plural forms unless otherwise indicated. The terms "include", "comprises" and "comprising" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features.

[0023] In the specification, when an element is referred to as being “on,” “fixed” to, “connected to,” or “engaged to,” etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or intervening elements may be present. In the specification, when a feature is arranged “adjacent” to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0024] It will be understood that although the terms "first," "second," etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Thus, a first element may be referred to as a second element without departing from the teachings of the present invention.

[0025] The following describes exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide many additional embodiments. In all figures, the same reference numerals represent the same elements or elements with the same function.

[0026] Figure 1A telescopic spreader for a stacker is shown. A mobile gantry 11, which is raised and lowered by a gantry lifting mechanism 13, is mounted within a fixed gantry 12. The mobile gantry 11 is equipped with an outwardly extending extension bracket 20, and a telescopic spreader 300 is positioned at the bottom of the extension bracket 20, enabling the telescopic spreader 300 to downwardly grasp an empty container 1. The extension bracket transmits the lifting force of the mobile gantry directly to the stabilizer, reducing intermediate structural redundancy. Unlike conventional stackers that grasp empty containers from the side, this spreader structure allows the stacker to fine-tune the alignment of the telescopic spreader 300 with the empty container 1 by adjusting two rotational degrees of freedom after approaching it, reducing the operator's skill requirements during container transfer operations. Because containers are secured by a top / bottom structural fastening during stacking, the design of direct vertical grasping of empty containers, unlike traditional side-lifting methods, utilizes the vertical separation characteristics of the fastening structure between container bodies to avoid the risk of container overturning due to lateral forces.

[0027] Figure 2 and Figure 3 The specific structure of this telescopic spreader is shown. The telescopic spreader 300 includes a load-bearing beam 310 as the main load-bearing body. A number of stabilizers 301 are vertically installed on the extension connection bracket 20. The load-bearing beam 310 is arranged at the bottom of the extension connection bracket 20 through the structures on the front and rear sides of the stabilizer 301. The stabilizer 301 is the main load-bearing and force-bearing component between the load-bearing beam 310 and the extension connection bracket 20. Furthermore, the stabilizer 301 is connected to the load-bearing beam 310 and the extension connection bracket 20 through a hinged structure. On the other hand, multiple stabilizers 301 are used to correct the box body swaying problem caused by the unbalanced force when the telescopic spreader 300 lifts the empty box 1 through the damping effect, thereby avoiding equipment damage caused by box body deflection.

[0028] A first oscillator 302 is also provided on the top of the load-bearing crossbeam 310, which is hingedly connected to the extension connection bracket 20. The first oscillator 302 is hingedly connected to the extension connection bracket 20 along the long side direction of the load-bearing crossbeam 310. By controlling the extension and contraction of the first oscillator 302, the load-bearing crossbeam 310 can be moved along the first direction ( Figure 2 Direction A) Small translation. The hinged swing direction of the stabilizer 301 should be in the same direction as the arrangement direction of the first oscillator 302. The stabilizer 301 can freely extend and retract to passively adapt to the movement of the load-bearing beam 310.

[0029] In some embodiments, there are four stabilizers 301 in total.

[0030] In some embodiments, the first swinger 302 is disposed along the short side of the load-bearing beam 310 .

[0031] In some embodiments, the first oscillator 302 is a controllable hydraulic cylinder.

[0032] In some embodiments, the stabilizer 301 is connected to the load-bearing beam 310 by a pin-hole hinge structure. A certain gap is reserved at the connection of this structure so that the load-bearing beam 310 can not only swing in the direction A perpendicular to the pin axis, but also have a certain micro-movement perpendicular to the first swinging direction through the reserved gap.

[0033] In some embodiments, the hinge structure between the stabilizer 301, the first oscillator 302, and the extension connecting bracket 20 is a ball joint. A pair of second oscillators 303 are also provided on top of the load-bearing beam 310, which are also connected to the extension connecting bracket 20 via a ball joint structure. The second oscillators 303 are arranged perpendicular to the first oscillators 302 (as viewed from a top-down angle, not shown in the figure) and are typically arranged in pairs on either side of the first oscillator 302. By controlling the extension and contraction of the second oscillators 303 in a similar manner, the load-bearing beam 310 can be translated relative to the extension connecting bracket 20 in a second direction (direction D) that is perpendicular to the first direction (direction A). Furthermore, the pair of second oscillators 303 can be controlled to extend / contract in opposite directions to rotate the load-bearing beam 310 in a third direction (direction B). The upper and lower ends of the stabilizer 301 are connected to the load-bearing beam 310 and the extended connecting bracket 20 through the first ball joint and the second ball joint respectively. The axis directions of the hinge shafts of the first ball joint and the second ball joint are perpendicular to each other. This cross-axis arrangement structure is conducive to reducing rotational resistance and improving rotation accuracy.

[0034] refer to Figure 4 The load-bearing beam 310 has an open cavity in which a pair of transverse movable beams are arranged to slide in parallel along the long side and can extend from both sides of the load-bearing beam 310. The design of the transverse movable beam embedded in the cavity of the load-bearing beam reduces the overall center of gravity. The transverse movable beam is composed of a first transverse movable beam 320 and a second transverse movable beam 330. Guides 321 are provided at the ends of the first transverse movable beam 320 and the second transverse movable beam 330. A sliding groove extending along the long side is provided on the adjacent side where the first transverse movable beam 320 and the second transverse movable beam 330 are connected to each other (not shown in the figure). One end of the guide 321 is fixed to the first transverse movable beam 320 or the second transverse movable beam 330, and the other end is embedded in the sliding groove to realize the function of the first transverse movable beam 320 and the second transverse movable beam 330 sliding toward each other ( Figure 3 The first and second transverse moving beams 320, 330 are connected to the load-bearing beam 310 via a slide rail structure located away from their adjacent sides, enabling relative sliding movement within the load-bearing beam 310. A sprocket mechanism drives the first and second transverse moving beams to slide synchronously in opposite directions along the slide rails, and in conjunction with a guide, ensures that the boom does not jam during extension and retraction.

[0035] A sprocket mechanism 340 is also located within the load-bearing beam 310. This mechanism synchronously controls the relative positions of the first and second transverse beams 320, 330 via chains 341 connected to the first and second transverse beams 320, 330, respectively. When the sprocket mechanism 340 releases the chains 341, the first and second transverse beams 320, 330 slide outward in opposite directions, increasing the distance between the connecting longitudinal beams 350 on either side. This allows larger empty boxes 1 to be grasped using the turn pins 351 at either end of the connecting longitudinal beams 350. When the chains 341 are retracted, the first and second transverse beams 320, 330 move toward each other, decreasing the distance between the connecting longitudinal beams 350 on either side. The rigid connection between the turn pins and the connecting longitudinal beams further ensures gripping stability and effectively prevents box shaking.

[0036] This technical solution achieves three-degree-of-freedom (DOF) horizontal oscillation and rotation of the spreader by extending the stabilizer and oscillator from the bottom of the bracket. The stabilizer provides primary load-bearing support and damping correction, while the oscillator drives the load-bearing crossbeam to perform small-angle oscillation and rotation. This allows the operator to fine-tune the spreader's position without repeatedly moving the forklift body, significantly reducing operator skill and adapting to positioning deviations caused by pin / hole tolerances.

Claims

1. A swing telescopic spreader, comprising a movable gantry arranged in a fixed gantry and raised and lowered by a gantry lift, characterized in that: The movable gantry is provided with an outwardly extending extending connecting bracket, and a telescopic sling is placed at the bottom of the extending connecting bracket for grabbing empty boxes downward. The telescopic sling includes a pair of transverse moving beams that are slidably arranged in the load-bearing beam and realize relative sliding through a sprocket moving mechanism.

2. A swing telescopic sling according to claim 1, characterized in that: The transverse moving beam includes a first transverse moving beam and a second transverse moving beam arranged in parallel with each other along a longitudinal direction, wherein the first transverse moving beam and the second transverse moving beam are slidably engaged with each other via guides at their ends.

3. The swing telescopic spreader according to claim 2, characterized in that: A slide groove is provided on one side where the first transverse moving beam and the second transverse moving beam are adjacent to each other, and one end of the guide is embedded in the slide groove to realize the mutual sliding function between the first transverse moving beam and the second transverse moving beam.

4. The swing telescopic spreader according to claim 2, characterized in that: A sprocket moving mechanism is also provided in the load-bearing beam, and the sprocket moving mechanism controls the synchronous sliding of the first transverse moving beam and the second transverse moving beam through sprockets respectively connected to the first transverse moving beam and the second transverse moving beam.

5. The swing telescopic spreader according to any one of claims 2 to 4, characterized in that: A hanging longitudinal beam is further provided at the ends of the first transverse moving beam and the second transverse moving beam. The hanging longitudinal beam is located at an end away from the guide. A rotating pin lock is also provided at the end of the hanging longitudinal beam.

6. The swing telescopic spreader according to claim 5, characterized in that: A plurality of stabilizers are vertically provided on the extended connecting bracket, and the load-bearing beam is twisted to the bottom of the extended connecting bracket through the plurality of stabilizers. A first oscillator is also twisted between the load-bearing beam and the extended connecting bracket. The first oscillator is connected to the top of the load-bearing beam and realizes the translational swing of the load-bearing beam toward the first direction through telescoping.

7. The swing telescopic spreader according to claim 6, characterized in that: It also includes a second oscillator arranged between the load-bearing beam and the extended connecting bracket, at least one pair of the second oscillators are placed on both sides of the first oscillator, the second oscillator is perpendicular to the arrangement direction of the first oscillator, and the load-bearing beam is translated toward the second direction and rotated in the third direction by telescoping, and the second direction is perpendicular to the first direction.

8. The swing telescopic spreader according to claim 6, characterized in that: The two ends of the stabilizer are connected to the load-bearing beam and the extended connecting bracket through a first ball joint and a second ball joint respectively, and the hinge axes of the first ball joint and the second ball joint are perpendicular to each other.

9. A stacker, characterized in that: A swinging telescopic spreader comprising any one of claims 1 to 8.

Images