A vertical gripping hoist

Abstract

The utility model discloses a hoisting device of vertical grabbing, including crossbeam, the both ends of crossbeam are walked on the track of two side support frame top respectively, and two side support frames are parallel to each other, its characterized in that: the parallel suspension frame of crossbeam is provided with, and the suspension frame is connected with crossbeam through vertical lifting mechanism, the lower part of suspension frame is hung with a plurality of grab clamping units, and grab clamping unit can form vertical support force to the lower part of the object clamped. The utility model can realize the automatic stable grabbing and lifting of longer object, and avoid the damage of object caused by the excessive clamping force to object.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a vertical gripping lifting device. Background Technology

[0002] Overhead cranes are commonly used for lifting objects. Common lifting devices include hooks, rings, grabs, and electromagnetic chucks. Hooks and rings, when lifting longer objects, require multiple points of attachment, and ensuring synchronization at these points is difficult. This can easily cause the object to tilt and fall during lifting, resulting in poor stability. Furthermore, the lifting process often requires manual assistance, leading to high labor intensity and low efficiency. Grabs and electromagnetic chucks have narrower applications, especially unsuitable for the automatic lifting of longer objects. While some cranes with automatic gripping functions typically apply significant clamping force to prevent objects from falling, this is not suitable for fragile objects. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a vertical gripping lifting device that can automatically and stably grip and lift long objects, and avoids damage to the objects caused by applying excessive clamping force.

[0004] Technical solution: To achieve the above objectives, this utility model provides a vertical gripping lifting device, comprising a crossbeam, with both ends of the crossbeam traveling on tracks at the top of two side support frames, the two side support frames being parallel to each other. The device is characterized in that: a suspension frame is arranged parallel below the crossbeam, the suspension frame being connected to the crossbeam via a vertical lifting mechanism; several gripping units are suspended at the lower part of the suspension frame, the gripping units providing vertical support to the lower part of the object being gripped.

[0005] Furthermore, the gripping unit includes two clamping members that are hinged to each other. Notches are provided on the adjacent sides of the two clamping members. When the two clamping members are closed, the two notches are spliced ​​together to form a horizontal lifting hole. The multiple lifting holes formed by the multiple gripping units are horizontally aligned.

[0006] Furthermore, the lifting hole is a vertical strip-shaped hole with a consistent width at the top and bottom, and the lower contour of the lifting hole is adapted to fit the lower contour of the object being clamped.

[0007] Furthermore, the two clamping members are connected to the suspension frame via a four-bar linkage drive mechanism, so that when the two clamping members are closed, their hinge point can move vertically downward.

[0008] Furthermore, the four-bar linkage includes two links hinged to each other at their upper ends. The lower ends of the two links are respectively hinged to the upper ends of the two clamping members to form a four-bar linkage structure. The two hinge axes of the four-bar linkage structure in the horizontal direction are the first hinge axis and the second hinge axis, respectively. The two hinge axes are connected by a driving member. The extension and retraction of the driving member can drive the two connected hinge axes to move closer to or further away from each other.

[0009] Furthermore, the driving component includes a telescopic cylinder, one end of which is hinged to a first hinge shaft, and the other end of which is fixedly connected to a transition plate, which is located between the telescopic cylinder and the four-bar linkage structure; the transition plate is hinged to a second hinge shaft, and the hinge point is located in the telescopic direction of the telescopic cylinder, and a guide groove is also formed on the transition plate along the telescopic direction, and the first hinge shaft slides in the guide groove.

[0010] Furthermore, the four-bar linkage is hinged to the lower part of the suspension frame via a hinge shaft at its upper part.

[0011] Furthermore, the vertical lifting mechanism does not include several vertical extensions, and the lower ends of all of them are fixedly connected to the upper part of the suspension frame. The upper parts of the multiple vertical extensions are respectively slidably engaged with the corresponding mounting holes on the crossbeam. The multiple vertical extensions are connected to the same drive motor through a gear and rack transmission mechanism, so that the drive motor can drive the multiple vertical extensions to lift synchronously.

[0012] Beneficial effects: This utility model provides a vertical gripping lifting device that can restrict the rotation trend of an object in the horizontal plane through multi-point gripping. By using bottom support and a lifting method with multiple support points rising simultaneously, it ensures that the object maintains a horizontal posture and rises vertically, avoiding the risk of tilting and falling. At the same time, it does not apply a large clamping force to the object, avoiding damage to the object. This makes the overall lifting device more widely applicable and more suitable for lifting long and fragile objects, enabling automatic and stable gripping and lifting of long objects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the lifting device of this utility model;

[0014] Figure 2 This is a schematic diagram of one embodiment of the gripping unit of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] As attached Figure 1-2The vertical gripping lifting device includes a crossbeam 1, with both ends of the crossbeam 1 traveling on tracks at the top of two side support frames 2, which are parallel to each other. A suspension frame 3 is parallel to the bottom of the crossbeam 1 and connected to the crossbeam 1 via a vertical lifting mechanism, allowing the suspension frame 3 to maintain a horizontal posture while vertically lifting. Several gripping units 4 are suspended at the lower part of the suspension frame 3, providing vertical support to the lower part of the object being gripped. This ensures that after gripping an object, it is kept in a horizontal position with bottom support, and is lifted vertically, guaranteeing stability during lifting and transport, preventing tilting and falling. Furthermore, the gripping units only apply bottom support to the gripped object, avoiding excessive pressure on the surface that could cause deformation or damage.

[0017] The multiple gripping units 4 are arranged according to the shape and structure of the object being gripped. For example, when gripping and lifting thin-walled long straight pipes, the suspension frame 3 can be set as a horizontal straight bar, and the multiple gripping units 4 are arranged at intervals along the length of the suspension frame 3. At least two gripping units 4 are arranged, which are used to lift the two ends of the pipe respectively.

[0018] The gripping unit 4 includes two clamping members 41 hinged together. Notches are provided on adjacent sides of both clamping members 41. When the two clamping members 41 are closed, the two notches join to form a horizontal lifting hole 42. The closing action of the two clamping members 41 enables the gripping of multiple objects, allowing the gripped portion of the object to pass through the lifting hole 42. The multiple lifting holes 42 formed by the multiple gripping units 4 are horizontally aligned, enabling the horizontal orientation of cylindrical objects during gripping and allowing for horizontal lifting.

[0019] The lifting hole 42 is a vertical strip-shaped hole with a consistent width from top to bottom. When clamping the pipe fitting, the horizontal width of the lifting hole is slightly larger than the outer diameter of the pipe fitting, so that the lifting hole can constrain and limit the pipe fitting without forming a substantial clamping force. During the lifting process, the pipe fitting can smoothly contact the bottom of the lifting hole 42. The lower contour of the lifting hole 42 is adapted to fit the lower contour of the object being clamped, increasing the bottom support area and further improving the stability of the object during the lifting process.

[0020] For particularly long pipe fittings, there can be two or more gripping units 4, with multiple gripping units 4 arranged at equal intervals, and each gripping unit 4 can open and close independently.

[0021] Furthermore, in each gripping unit 4, the two gripping members 41 are connected to the suspension frame 3 through a four-bar linkage drive mechanism, so that when the two gripping members 41 are closed, their hinge point can move vertically downward.

[0022] Based on this, when vertically gripping longer pipe fittings, due to the mechanical properties of long, straight cylindrical objects, the bending strength decreases with length. Therefore, when a longer pipe fitting is placed on the picking rack, it may be bent to some extent, causing the ends of the pipe fitting to tilt upwards. The system can be moved forward with all gripping units open until both ends of the pipe fitting contact the corresponding gripping unit 4. Due to the hinged structure of the gripping units, the contact point is the lower part of the hinge joint between the two clamping parts. Then, by first driving the two gripping units 4 at the corresponding ends to close, the hinge point moves vertically downwards during closure, allowing the pipe fitting to straighten to some extent. This ensures that the middle part of the pipe fitting falls completely within the clamping range of the corresponding gripping unit 4. Then, the middle gripping units close, allowing the pipe fitting to pass through the lifting holes of all gripping units. After all gripping units are closed, the lifting action is triggered. This achieves automatic gripping and lifting of longer pipe fittings, and the entire process is stable with minimal pressure on the pipe fitting.

[0023] The four-bar linkage drive mechanism includes two connecting rods 43 hinged to each other at their upper ends. The lower ends of the two connecting rods 43 are respectively hinged to the upper ends of two clamping members 41 to form a four-bar structure. The two hinge axes in the horizontal direction of the four-bar structure are a first hinge axis 44 and a second hinge axis 45, which are connected by a driving member. The extension and retraction of the driving member can drive the two connected hinge axes to move closer or further apart. The two connecting rods 43 are of the same length, which ensures that the gripping unit maintains a vertically downward gripping action in a natural suspension state. Based on the precise positioning of the crossbeam through sensors, it can ensure accurate and error-free gripping of objects. Simply move the crossbeam to the position above the object, then use the vertical suspension frame to the appropriate height, then use multiple gripping units to complete the gripping action, and finally lift vertically to complete the hoisting.

[0024] Preferably, the driving component includes a telescopic cylinder 5, one end of which is hinged to a first hinge shaft 44, and the other end of which is fixedly connected to a transition plate 6, located between the telescopic cylinder 5 and the four-bar linkage structure. The transition plate 6 is hinged to a second hinge shaft 45, with the hinge point located in the telescopic direction of the telescopic cylinder 5. A guide groove 61 is also formed on the transition plate 6 along the telescopic direction, and the first hinge shaft 44 slides within the guide groove 61. The opening and closing action of the gripping unit can be achieved through the telescopic movement of the telescopic rod. The telescopic cylinder may be a hydraulic cylinder, and multiple gripping units can be driven by a hydraulic station to complete coordinated actions.

[0025] The four-bar linkage is hinged to the lower part of the suspension frame 3 via its upper hinge shaft. This allows the gripping unit to have a higher degree of freedom, enabling it to grasp objects in more complex material handling environments. For example, when an object is placed on an inclined plane, the open gripping unit can adaptively swing to an angle corresponding to the placement plane when the suspension frame is lowered vertically to a certain height, thus facilitating the grasping of the object from the inclined plane.

[0026] The vertical lifting mechanism does not include several vertical extensions 7, and their lower ends are all fixedly connected to the upper part of the suspension frame 3. The upper parts of the multiple vertical extensions 7 are respectively slidably engaged with the corresponding mounting holes on the crossbeam 1. The vertical extensions 7 and the inner wall of the mounting holes are slidably engaged with the guide slides. The guide slides may be a combination of guide rails and sliders, or guide rollers, guide wheels, etc. The multiple vertical extensions 7 are connected to the same drive motor through a gear and rack transmission mechanism, so that the drive motor can drive the multiple vertical extensions 7 to lift and lower synchronously, which can ensure the stable vertical lifting and lowering of the suspension frame 3.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A vertical gripping lifting device, comprising a crossbeam (1), the two ends of the crossbeam (1) respectively traveling on the tracks at the top of two side support frames (2), the two side support frames (2) being parallel to each other; Its features are: A suspension frame (3) is provided parallel to the bottom of the crossbeam (1). The suspension frame (3) is connected to the crossbeam (1) through a vertical lifting mechanism. Several gripping units (4) are suspended at the bottom of the suspension frame (3). The gripping units (4) can form a vertical support force on the bottom of the object being gripped. The gripping unit (4) includes two clamping members (41) that are hinged to each other. Both clamping members (41) have notches on their adjacent sides. When the two clamping members (41) are closed, the two notches are spliced ​​together to form a horizontal lifting hole (42). The multiple lifting holes (42) formed by the multiple gripping units (4) are horizontally aligned. The two clamping members (41) are connected to the suspension frame (3) through a four-bar linkage drive mechanism, so that when the two clamping members (41) are closed, their hinge point can move vertically downward.

2. The vertical gripping lifting device according to claim 1, characterized in that: The lifting hole (42) is a vertical strip hole with the same width at the top and bottom. The lower contour of the lifting hole (42) is adapted to fit the lower contour of the object being clamped.

3. The vertical gripping lifting device according to claim 1, characterized in that: The four-bar linkage includes two links (43) hinged to each other at their upper ends. The lower ends of the two links (43) are respectively hinged to the upper ends of two clamping members (41) to form a four-bar structure. The two hinge axes of the four-bar structure in the horizontal direction are the first hinge axis (44) and the second hinge axis (45). The two hinge axes are connected by a driving member. The extension and retraction of the driving member can drive the two connected hinge axes to move closer or further away from each other.

4. The vertical gripping lifting device according to claim 3, characterized in that: The driving component includes a telescopic cylinder (5), one end of which is hinged to a first hinge shaft (44), and the other end of which is fixedly connected to a transition plate (6). The transition plate (6) is located between the telescopic cylinder (5) and the four-bar linkage structure. The transition plate (6) is hinged to a second hinge shaft (45), and the hinge point is located in the telescopic direction of the telescopic cylinder (5). A guide groove (61) is also formed on the transition plate (6) along the telescopic direction, and the first hinge shaft (44) slides in the guide groove (61).

5. The vertical gripping lifting device according to claim 4, characterized in that: The four-bar linkage is hinged to the lower part of the suspension frame (3) via a hinge shaft at its upper part.

6. The vertical gripping lifting device according to claim 1, characterized in that: The vertical lifting mechanism does not include several vertical extensions (7), and the lower ends of all of them are fixedly connected to the upper part of the suspension frame (3). The upper parts of the multiple vertical extensions (7) are respectively slidably engaged with the corresponding mounting holes on the crossbeam (1). The multiple vertical extensions (7) are connected to the same drive motor through a gear and rack transmission mechanism, so that the drive motor can drive the multiple vertical extensions (7) to lift synchronously.

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