Concrete segment vertical lifting appliance with variable lifting points

Abstract

The utility model provides a concrete segment vertical lifting appliance with variable lifting points, and belongs to the technical field of lifting appliances. Comprising a left clamping jaw and a right clamping jaw, the upper end of the right clamping jaw is hinged to the middle of the left clamping jaw, one end of the lifting arm is hinged to the upper end of the left clamping jaw, a lifting point hole is formed in the other end of the lifting arm, and during lifting, the lifting point of the lifting appliance is vertically consistent with the gravity center of a lifted workpiece when the lifting arm is in a vertical state; one side of the lifting arm is connected with the left clamping jaw, so that the position of the lifting point hole is changed, and the lifting point of the lifting appliance is vertically consistent with the gravity center of another lifted workpiece. According to the utility model, the lifting arm in the lifting appliance is improved, so that the lifting point of the lifting appliance can be adjusted, one lifting appliance can adapt to lifting of lifted workpieces with different gravity centers, and the gravity centers of the lifted workpieces are ensured to be correspondingly consistent with the lifting point of the lifting appliance in the lifting process, so that the potential safety hazard of the lifted workpieces in the stacking process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of slings, and in particular relates to a vertical sling for concrete pipe segments with variable sling points. Background Art

[0002] A hoist is a device used in lifting machinery to lift heavy objects. Concrete segments are prefabricated components composed primarily of steel and concrete. Typically, hoists are used to lift and move concrete segments. However, the lifting points of typical vertical hoists for concrete segments are fixed. However, there are many different types of concrete segments, and the center of gravity of some segments varies significantly. When hoisting with a hoist, the misalignment between the center of gravity and the lifting point of one concrete segment can cause it to tilt during lifting, posing a significant safety hazard during stacking. Therefore, improvements are necessary. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a vertical hoist for concrete pipe segments with a variable lifting point. The utility model aims to adapt to the lifting of workpieces with different centers of gravity by changing the lifting point of the hoist, thereby avoiding safety hazards during the stacking of workpieces.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0005] A vertical sling for concrete segments with variable lifting points comprises a left clamping jaw and a right clamping jaw, wherein the upper end of the right clamping jaw is hinged to the middle of the left clamping jaw, and further comprises a lifting arm, one end of which is hinged to the upper end of the left clamping jaw, and the other end of which is provided with a lifting point hole. When the lifting arm is in a vertical state, the lifting point of the sling is aligned with the center of gravity of a workpiece being lifted;

[0006] One side of the lifting arm is connected to the left clamping claw so that the position of the lifting point hole is changed and the lifting point of the lifting device is aligned with the center of gravity of another lifted workpiece.

[0007] Among them, a variable lifting point connection seat I is provided on one side of the lifting arm, and a variable lifting point connection seat II is provided on the upper side of the left clamping jaw. Both the variable lifting point connection seat I and the variable lifting point connection seat II are provided with hinge holes. The variable lifting point connection seat I and the variable lifting point connection seat II are connected together by a hinged locking rod when the lifting point needs to be changed.

[0008] Furthermore, the positions of the variable lifting point connecting seat I and the hinge hole thereon on one side of the lifting arm are determined according to the center of gravity of the workpiece to be lifted.

[0009] Furthermore, one, two or more hinge holes may be provided on one side of the boom according to the center of gravity of different workpieces to be hoisted.

[0010] It also includes an operating rod, one end of which is movably connected to the left clamping jaw, a latch tongue is provided in the middle of the operating rod, and a clamping platform for engaging with or separating from the latch tongue is provided on the right clamping jaw.

[0011] Furthermore, a curved groove is provided on one side of the latch tongue, and the latch platform is a cylindrical structure.

[0012] Furthermore, the connection point between the operating rod and the left jaw is below the hinge point of the right jaw and the left jaw, a hinge pin is provided on the left jaw, and a hinge sleeve is provided at one end of the operating rod, and the hinge sleeve is sleeved on the operating rod and limited by a cotter pin.

[0013] Among them, a left clamping plate is provided on the side of the lower part of the left clamping jaw facing the right clamping jaw, and the left clamping plate is an inverted L-shaped structure. The left clamping plate is fixedly connected to the left clamping jaw through a left reinforcing plate; a right clamping plate is provided on the side of the lower part of the right clamping jaw facing the left clamping jaw, and the right clamping plate is a C-shaped structure. The right clamping plate is fixedly connected to the right clamping jaw through a right reinforcing plate.

[0014] Furthermore, the left clamping jaw and the right clamping jaw are connected via an articulated shaft I; the boom and the left clamping jaw are connected via an articulated shaft II.

[0015] The advantages of this utility model compared with the prior art are:

[0016] This solution improves the boom in the sling so that the lifting point of the sling can be adjusted. When the boom is in a vertical state, the lifting point of the sling is aligned with the center of gravity of one type of workpiece being lifted; when one side of the boom is connected to the left clamping jaw, the lifting point of the sling can be aligned with the center of gravity of another type of workpiece being lifted during lifting. This allows one sling to adapt to lifting workpieces with different centers of gravity, ensuring that the center of gravity of the workpiece being lifted is aligned with the lifting point of the sling during the lifting process, thereby avoiding safety hazards during the stacking of the workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the structural front view of the utility model;

[0018] Figure 2 This is a right side view of the structure of the utility model;

[0019] Figure 3 This is a rear view of the structure of the utility model;

[0020] Figure 4 This is the structural front view of the left clamping jaw in the utility model;

[0021] Figure 5 This is a left side view of the structure of the left clamping jaw in the present invention;

[0022] Figure 6 This is the structural front view of the right clamping jaw in the utility model;

[0023] Figure 7 This is a right side view of the structure of the right clamping jaw in the present invention;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the right clamping jaw in the present invention;

[0025] Figure 9 This is the structural front view of the boom in the utility model;

[0026] Figure 10 This is a schematic diagram of using the utility model to lift standard concrete segments;

[0027] Figure 11 It is a schematic diagram of using the utility model to lift the capping concrete segment. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0030] See also Figure 1-11 , describe the embodiments of the present utility model in detail.

[0031] Example: Vertical sling for concrete segments with variable sling points, see Figure 1-3 As shown, it includes a left clamping jaw 1 and a right clamping jaw 2, the upper end of the right clamping jaw 2 is hinged to the middle part of the left clamping jaw 1, and also includes a boom 5, one end of the boom 5 is hinged to the upper end of the left clamping jaw 1, and the other end of the boom 5 is provided with a lifting point hole 5-1. When the boom 5 is in a vertical state, the lifting point of the sling is aligned with the center of gravity of a suspended workpiece; one side of the boom 5 is connected to the left clamping jaw 1 to change the position of the lifting point hole 5-1 and to make the lifting point of the sling aligned with the center of gravity of another suspended workpiece.

[0032] In this embodiment, the boom in the sling is improved so that the lifting point of the sling can be adjusted. When the boom is in a vertical state, the lifting point of the sling is aligned with the center of gravity of one type of workpiece being lifted; when one side of the boom is connected to the left clamp, the lifting point of the sling can be aligned with the center of gravity of another type of workpiece being lifted. This allows one sling to adapt to the lifting of workpieces with different centers of gravity, ensuring that the center of gravity of the workpiece being lifted corresponds to the lifting point of the sling during the lifting process, thereby avoiding safety hazards of the workpieces being lifted during stacking.

[0033] In a specific embodiment, see Figure 1 、 3 As shown in Figure 9, a variable lifting point connection seat I5-2 is provided on one side of the boom 5, and a variable lifting point connection seat II1-4 is provided on the upper side of the left clamping jaw 1. Both the variable lifting point connection seat I5-2 and the variable lifting point connection seat II1-4 are provided with hinge holes. The variable lifting point connection seat I5-2 and the variable lifting point connection seat II1-4 are connected together by a hinged locking rod 7 when the lifting point needs to be changed.

[0034] According to the above embodiment, when the boom 5 is in a free state, it is a lifting point position. When the boom 5 is connected to the left clamping jaw 1 through the hinged locking rod 7, the lifting point position of the boom 5 changes.

[0035] Preferably, the positions of the variable lifting point connecting seat Ⅰ5-2 and the hinge hole thereon on one side of the lifting arm 5 are determined according to the center of gravity of the workpiece to be lifted.

[0036] The above structure can realize the design and manufacture of the lifting point of the boom according to the center of gravity of the workpiece being lifted by changing the position of the variable lifting point connecting seat Ⅰ5-2 and the hinge hole on one side of the boom.

[0037] In a specific embodiment, one, two or more hinge holes may be provided on one side of the lifting arm 5 according to the center of gravity of different workpieces to be lifted.

[0038] In the above structure, by setting two or more hinge holes on one side of the boom 5, the boom can select a suitable hinge hole according to the center of gravity of the workpiece to be hung and connect it with the hinge hole on the left clamping jaw, so as to achieve consistency between the hanging point and the center of gravity of the workpiece to be hung.

[0039] In a specific embodiment, it also includes an operating rod 4, one end of which is movably connected to the left clamping jaw 1, a tongue 4-2 is provided in the middle of the operating rod 4, and a clamping platform 2-3 for engaging with or separating from the tongue 4-2 is provided on the right clamping jaw 2.

[0040] In the above embodiment, the operating lever is operated to engage the tongue on the operating lever with the clamping plate on the right clamping jaw, thereby defining the distance between the left and right clamping jaws and allowing the jaws to smoothly engage the workpiece. Once the clamping jaws are locked in place, the operating lever is operated to disengage the tongue from the clamping plate, allowing the workpiece to be firmly clamped during the lifting process.

[0041] Preferably, one side of the tongue 4-2 is provided with an arc-surface slot 4-2-1, and the platform 2-3 is a cylindrical structure, which facilitates the engagement and separation of the slot and the platform.

[0042] In a specific embodiment, see Figure 3 As shown, the connection point between the operating rod 4 and the left clamping jaw 1 is below the hinge point between the right clamping jaw 2 and the left clamping jaw 1. The left clamping jaw 1 is provided with a hinge pin 1-3, and one end of the operating rod 4 is provided with a hinge sleeve 4-1. The hinge sleeve 4-1 is sleeved on the operating rod 4 and limited by a cotter pin.

[0043] In the above structure, the connection point between the operating rod and the left clamping jaw can ensure that the operating rod limits the left and right clamping jaws more reasonably.

[0044] In a specific embodiment, see Figure 4 、 5 As shown, a left clamping plate 1-1 is provided on the side of the lower portion of the left clamping jaw 1 facing the right clamping jaw 2. The left clamping plate 1-1 is an inverted L-shaped structure. The left clamping plate 1-1 is fixedly connected to the left clamping jaw 1 through a left reinforcing plate 1-2; Figure 6-9 As shown, a right clamping plate 2-1 is provided on the lower side of the right clamping jaw 2 facing the left clamping jaw 1. The right clamping plate 2-1 is a C-shaped structure and is fixedly connected to the right clamping jaw 2 through a right reinforcing plate 2-2.

[0045] In the above structure, the left clamping plate on the left clamping jaw adopts an inverted L-shaped structure, which is convenient for contacting the flat surface of the suspended workpiece. The right clamping plate on the right clamping jaw adopts a C-shaped structure, which is convenient for adapting to the boss on the suspended workpiece. This structure makes it easier for the clamping jaw to clamp the workpiece more firmly and reliably.

[0046] In a specific embodiment, see Figure 1 As shown, the left clamping jaw 1 and the right clamping jaw 2 are connected via an articulated shaft I3; the boom 5 and the left clamping jaw 1 are connected via an articulated shaft II6.

[0047] Working principle of this utility model: Figure 10 As shown, when the side of the boom 5 is not connected to the left clamp 1, during lifting, the boom 5 is in a vertical state, and the lifting point of the spreader is consistent with the center of gravity of the concrete pipe segment of the standard block; when the side of the boom 5 is connected to the left clamp 1 through the hinged locking rod, during lifting, the lifting point of the spreader is consistent with the center of gravity of the concrete pipe segment of the capping block. Figure 11Therefore, the utility model hoist can adapt to the lifting of pipe segments with different centers of gravity, ensuring that the center of gravity of the concrete pipe segment being lifted corresponds to the lifting point of the hoist during the lifting process, thereby avoiding safety hazards during the stacking of the pipe segments.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vertical hanger for concrete segments with variable lifting points, comprising a left clamping jaw (1) and a right clamping jaw (2), wherein the upper end of the right clamping jaw (2) is hinged to the middle of the left clamping jaw (1), and characterized in that: It also includes a lifting arm (5), one end of which is hinged to the upper end of the left clamping claw (1), and the other end of which is provided with a lifting point hole (5-1). When the lifting arm (5) is in a vertical state, the lifting point of the lifting device is aligned with the center of gravity of a workpiece to be lifted. One side of the lifting arm (5) is connected to the left clamping claw (1) so that the position of the lifting point hole (5-1) is changed and the lifting point of the lifting device is aligned with the center of gravity of another lifted workpiece.

2. The vertical hanger for concrete segments with variable hanging points according to claim 1 is characterized in that: A variable lifting point connection seat I (5-2) is provided on one side of the lifting arm (5), and a variable lifting point connection seat II (1-4) is provided on one side of the upper part of the left clamping jaw (1). Both the variable lifting point connection seat I (5-2) and the variable lifting point connection seat II (1-4) are provided with hinge holes. When the lifting point needs to be changed, the variable lifting point connection seat I (5-2) and the variable lifting point connection seat II (1-4) are connected together through a hinged locking rod (7).

3. The vertical hanger for concrete segments with variable hanging points according to claim 2 is characterized in that: The positions of the variable lifting point connecting seat I (5-2) and the hinge hole thereon on one side of the lifting arm (5) are determined according to the center of gravity of the workpiece to be lifted.

4. The vertical hanger for concrete segments with variable hanging points according to claim 2, characterized in that: One, two or more hinge holes can be provided on one side of the lifting arm (5) according to the center of gravity of different suspended workpieces.

5. The vertical hanger for concrete segments with variable hanging points according to claim 1 is characterized in that: The invention also includes an operating rod (4), one end of which is movably connected to the left clamping jaw (1), a latching tongue (4-2) is provided in the middle of the operating rod (4), and a clamping platform (2-3) for engaging with or separating from the latching tongue (4-2) is provided on the right clamping jaw (2).

6. The vertical hanger for concrete segments with variable hanging points according to claim 5, characterized in that: One side of the latch tongue (4-2) is provided with an arc-surface latch groove (4-2-1), and the latch platform (2-3) is a cylindrical structure.

7. The vertical hanger for concrete segments with variable hanging points according to claim 5, characterized in that: The connection point between the operating rod (4) and the left clamping jaw (1) is located below the hinge point between the right clamping jaw (2) and the left clamping jaw (1); a hinge pin (1-3) is provided on the left clamping jaw (1); and a hinge sleeve (4-1) is provided at one end of the operating rod (4); the hinge sleeve (4-1) is sleeved on the operating rod (4) and is limited by a cotter pin.

8. The vertical hanger for concrete segments with variable hanging points according to claim 1, characterized in that: A left clamping plate (1-1) is provided on the side of the lower part of the left clamping jaw (1) facing the right clamping jaw (2), the left clamping plate (1-1) is an inverted L-shaped structure, and the left clamping plate (1-1) is fixedly connected to the left clamping jaw (1) via a left reinforcing plate (1-2); a right clamping plate (2-1) is provided on the side of the lower part of the right clamping jaw (2) facing the left clamping jaw (1), the right clamping plate (2-1) is a C-shaped structure, and the right clamping plate (2-1) is fixedly connected to the right clamping jaw (2) via a right reinforcing plate (2-2).

9. The vertical hanger for concrete segments with variable hanging points according to claim 1, characterized in that: The left clamping jaw (1) and the right clamping jaw (2) are connected via an articulated shaft I (3); the boom (5) and the left clamping jaw (1) are connected via an articulated shaft II (6).

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