External structure for adjusting the length of sling and sling device

Abstract

This application relates to the field of construction technology, and more particularly to an external structure and lifting device with adjustable sling length, comprising: a main body for connecting to the lifting equipment; a sling lifting member slidably disposed on the main body in the vertical direction; and a drive assembly disposed on the main body, including a drive member capable of moving along the vertical direction to drive the sling lifting member upward to tighten the sling, thereby securing the lifting object with the sling. By configuring the main body, the sling lifting member, and the drive assembly, the main body can connect to the lifting equipment, the sling lifting member is slidably disposed on the main body in the vertical direction, and the drive member can move along the vertical direction to drive the sling lifting member upward to tighten the sling. This eliminates the sling length surplus, reduces the gap between the lifting equipment and the lifting object during lifting, and thus improves the stability and safety of the lifting object during the lifting process.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to an external structure and lifting device with adjustable sling length. Background Technology

[0002] In the construction industry, the lifting process is particularly important during prefabricated construction. Due to the diverse outer contours of bridges or assembled modules, slings are often used for lifting. However, slings usually have a certain margin, which means that there is a large gap between the lifting equipment and the object being lifted during the lifting process. This can easily cause the object to slip due to shaking, affecting safety. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides an external structure and lifting device with adjustable sling allowance length.

[0004] In a first aspect, this application provides an external structure with adjustable sling allowance length, wherein the sling is connected to a lifting device and can be tied to the object being lifted to support the object below it, comprising:

[0005] The main body is used to connect the lifting gear;

[0006] The lifting sling is slidably mounted on the main body in the vertical direction;

[0007] A drive assembly, disposed on the main body, includes a drive member capable of moving along the vertical direction to drive the sling lifting member to move upward and tighten the sling, so that the sling is secured to the hoisted object.

[0008] In some embodiments, a plurality of pressure-bearing pads are also included;

[0009] The main body has a groove extending along the vertical direction, the lifting strap is slidably disposed in the groove, the main body has a notch connecting the groove and extending along the vertical direction, and the pressure pad is configured to be placed between the bottom surface of the lifting strap and the groove through the notch.

[0010] In some embodiments, the plurality of pressure-bearing pads have the same thickness; or

[0011] At least two of the plurality of pressure-bearing pads have different thicknesses.

[0012] In some embodiments, the lifting member of the sling is provided with an insertion hole extending along the vertical direction;

[0013] The drive component includes a first shaft segment and a second shaft segment. The outer diameter of the first shaft segment is smaller than the outer diameter of the second shaft segment, and the outer diameter of the second shaft segment is larger than the diameter of the socket. The first shaft segment can be inserted into the socket.

[0014] In some embodiments, the main body has a threaded hole extending along the vertical direction, the drive member is threaded through the threaded hole, one end of which can be inserted into the insertion hole, and the other end is exposed outside the threaded hole.

[0015] In some embodiments, the drive assembly further includes a rotary handle connected to one end of the drive member exposed in the threaded hole.

[0016] In some embodiments, the rotary handle is provided with a connection hole for connecting an electric wrench.

[0017] In some embodiments, the main body is provided with a plurality of through holes;

[0018] The external structure with adjustable sling allowance also includes multiple fasteners, which pass through the through holes and can be threaded to the lifting device.

[0019] Secondly, this application provides a lifting device, including a lifting device, a sling, and an external structure with an adjustable sling allowance length provided in the first aspect. The sling is connected to the lifting device, the main body is connected to the lifting device, and the sling is mounted on the sling lifting member.

[0020] In some embodiments, the lifting device is provided with external structures for the adjustable sling allowance length at both ends in a first direction, and the first direction is perpendicular to the vertical direction.

[0021] The technical solution provided in this application has the following advantages compared with the prior art:

[0022] This external structure with adjustable sling length allows for the elimination of sling excess length. It consists of a main body, a sling lifting component, and a drive assembly. The main body is connected to the lifting equipment, the sling lifting component slides vertically on the main body, and the drive assembly moves vertically to move the sling lifting component upward to tighten the sling. This eliminates sling excess length, reduces the gap between the lifting equipment and the object being lifted, and improves the stability and safety of the object during the lifting process. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view of the external structure with adjustable sling allowance length as described in the embodiments of this application;

[0026] Figure 2 for Figure 1 Schematic sectional view along the middle AA direction;

[0027] Figure 3 This is a schematic diagram of the lifting device described in the embodiments of this application.

[0028] Among them, 10 is a sling; 20 is a lifting device; 30 is an external structure with adjustable sling length; and 40 is the object being lifted.

[0029] 1. Main body; 11. Through hole; 2. Lifting strap; 21. Insertion hole; 3. Drive assembly; 31. Drive component; 32. Rotating handle; 4. Pressure pad block. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0032] This application provides an external structure 30 with adjustable sling length, wherein the sling 10 is connected to the lifting device 20 and can be tied to the object 40 to support the object 40 from below.

[0033] Specifically, such as Figure 1 and Figure 2 As shown, the external structure 30 with adjustable sling length includes a main body 1, a sling lifting member 2, and a drive assembly 3. The main body 1 is used to connect the lifting device 20. The sling lifting member 2 is slidably mounted on the main body 1 in the vertical direction. The drive assembly 3 is mounted on the main body 1 and includes a drive member 31, which can move vertically to drive the sling lifting member 2 upward to tighten the sling 10, thereby securing the lifting object 40 with the sling 10.

[0034] Understandably, the external structure 30 with adjustable sling length allowance, by setting up a main body 1, a sling lifting component 2, and a drive assembly 3, allows the main body 1 to be connected to the lifting device 20. The sling lifting component 2 is slidably mounted on the main body 1 in the vertical direction. The drive assembly 31 can move in the vertical direction to drive the sling lifting component 2 to move upward and tighten the sling 10, thereby eliminating the allowance length of the sling 10, reducing the gap between the lifting device 20 and the object 40 when lifting the object, thereby improving the stability of the object 40 during the lifting process and improving safety.

[0035] When the sling 10 is long, although the lifting device 20 can be close to the load 40 before lifting, the excessive length of the sling 10 causes the lifting device 20 to rise first to tighten the sling 10 before lifting the load 40. This results in a gap between the lifting device 20 and the load 40 in the vertical direction, leading to unstable lifting. The external structure 30, which allows for adjustable sling length, can tighten the sling 10 by moving the sling lifting member 2 upwards, eliminating any excess length. This allows the lifting device 20 to lift the load 40 simultaneously with its rise, reducing or eliminating the gap between the lifting device 20 and the load 40 in the vertical direction, thus improving stability.

[0036] It should be noted that the aforementioned lifting member 2, which can move upward under the drive of the drive member 31, can also move downward, thereby loosening the lifting sling 10. This makes it easier to release the lifting sling 10 after the object is hoisted into place. The downward movement of the lifting member 2 can be accomplished by the drive member 31, or by the lifting member 2 moving downward by its own gravity after the drive member 31 is removed.

[0037] In addition, to improve the stability of the sling 10,

[0038] In some embodiments, the external structure 30 with adjustable sling length also includes a plurality of pressure-bearing pads 4. The main body 1 has a groove extending vertically, the sling lifting member 2 is slidably disposed in the groove, and the main body 1 has a notch that connects to the groove and extends vertically, so that the pressure-bearing pads 4 can be placed between the sling lifting member 2 and the bottom surface of the groove through the notch.

[0039] Understandably, after the lifting member 2 moves upward under the drive of the drive member 31, the lifting member 2 mainly relies on the drive member 31 for support. Thus, when lifting the load 40, the tension on the sling 10 is applied to the drive member 31. Therefore, by setting the pressure pad 4, the force of the sling 10 on the lifting member 2 is applied to the main body 1 through the pressure pad 4, and then transmitted to the lifting device 20. This reduces the force on the drive member 31, and makes the external structure 30 with adjustable sling allowance length bear the force as a whole, thereby improving the stability when lifting the load.

[0040] It should be noted that the thickness of the multiple pressure-bearing pads 4 is the same. Alternatively, at least two of the multiple pressure-bearing pads 4 may have different thicknesses. In other words, the thickness of the multiple pressure-bearing pads 4 may vary, or some of the multiple pressure-bearing pads 4 may have the same thickness, while others may have different thicknesses.

[0041] The quantity and thickness of the pressure-bearing pads 4 can be set and selected according to actual needs, and no specific limit is made here.

[0042] In some embodiments, the lifting member 2 is provided with a vertically extending insertion hole 21. The driving member 31 includes a first shaft segment and a second shaft segment. The outer diameter of the first shaft segment is smaller than the outer diameter of the second shaft segment, and the outer diameter of the second shaft segment is larger than the outer diameter of the insertion hole. The first shaft segment can be inserted into the insertion hole 21.

[0043] Understandably, when the drive member 31 moves upward, the first shaft segment is inserted into the insertion hole 21, and the sling lifting member 2 is driven to move upward by contacting the stepped surface between the first shaft segment and the second shaft segment.

[0044] Furthermore, the main body 1 is provided with a threaded hole extending in the vertical direction, the drive member 31 is threaded through the threaded hole, and one end can be inserted into the insertion hole 21, while the other end is exposed outside the threaded hole.

[0045] Understandably, the drive component 31 is threadedly connected to the main body 1 at this time. By turning the drive component 31, its vertical movement can be achieved, thereby driving the lifting member 2 of the sling to move upward. At this time, the drive component 31 mainly drives the lifting member 2 of the sling to move upward. When the drive component 31 moves downward, if the pressure pad 4 is removed, the lifting member 2 of the sling will move downward under its own weight and return to the bottom of the groove. Furthermore, the drive component 31 is threadedly connected to the main body 1, and after driving the lifting member 2 of the sling to move into place, the drive component 31 can achieve self-locking through the thread, thereby improving the support stability of the lifting member 2 of the sling.

[0046] It should be noted that, since the drive component 31 can rotate around its own central axis to move in the vertical direction, although the drive component 31 is inserted into the socket 21, it can rotate within the socket 21. In other words, the rotation of the drive component 31 will not drive the lifting component 2 to rotate.

[0047] Furthermore, the aforementioned drive assembly 3 also includes a rotary handle 32, which is connected to one end of the drive member 31 that is exposed in the threaded hole.

[0048] Understandably, the rotating handle 32 facilitates the turning of the drive component 31, thereby enabling the lifting component 2 of the sling to move upward. This can be done manually by turning the drive component 31 using the rotating handle 32, or by connecting an electric wrench to the rotating handle 32 and using a motor to rotate the handle 32, thus electrically adjusting the drive component 31. The rotating handle 32 is equipped with a connection hole for connecting the electric wrench.

[0049] Of course, in other embodiments, the aforementioned drive component can also be directly connected to the sling lifting component, thus driving the sling lifting component to move up or down. For example, the drive component can be a nut, and the drive assembly also includes a lead screw. The nut and the lead screw are threadedly connected, and turning the lead screw will drive the drive component to move up or down via the nut. In this case, the rotation of the lead screw can be driven by a motor to achieve electric adjustment. Alternatively, the drive component can also be a cylinder, an electric actuator, etc., which will not be listed here.

[0050] In some embodiments, the main body 1 is provided with a plurality of through holes 11. The external structure 30 with adjustable sling length also includes a plurality of fasteners, which pass through the through holes and can be threaded to the lifting device 20.

[0051] Understandably, the main body 1 is detachably fixed to the lifting device 20 by fasteners, which facilitates the installation and removal of the external structure 30 with adjustable sling length.

[0052] Of course, in other embodiments, the main body 1 can also be welded to the lifting device 20, that is, the main body 1 is fixed to the lifting device 20 in a non-removable manner to ensure the connection stability between the main body 1 and the lifting device 20.

[0053] like Figure 3 As shown in the illustration, this application also provides a lifting device, including a lifting device 20, a sling 10, and an external structure 30 with adjustable sling length. The sling 10 is connected to the lifting device 20 and can be tied to the object being lifted 40 to support the object 40 from below. The main body 1 is connected to the lifting device 20, and the sling 10 is mounted on the sling lifting member 2.

[0054] Understandably, this lifting device, through the setting of an external structure 30 with adjustable sling allowance length, can eliminate the influence of the sling allowance length before the lifting device 20 and sling 10 lift the load 40, thereby reducing or even eliminating the gap between the lifting device 20 and the load 40 in the vertical direction when lifting the load 40.

[0055] Reference Figure 3 The lifting device 20 has external structures 30 at both ends in the first direction, which are perpendicular to the vertical direction. The first direction is the horizontal direction.

[0056] Understandably, by providing the external structure 30 with the adjustable sling allowance length at both ends of the spreader 20 in the first direction, the allowance of the sling 10 can be adjusted on both sides of the spreader 20 in the first direction, thereby improving the adjustment efficiency and facilitating the balance of both ends of the spreader 20 in the first direction.

[0057] It should be noted that multiple slings 10 can be provided, and thus multiple external structures 30 with adjustable sling allowance length can also be provided to achieve adjustment of the allowance length of each sling 10.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An external structure for adjustable sling excess length, said sling (10) being connected to a hoist (20) and capable of being tied to a hoisted object (40) to support said hoisted object (40) below said hoisted object (40), characterized in that, include: Main body (1), used to connect the lifting device (20); The lifting sling (2) is slidably mounted on the main body (1) in the vertical direction; A drive assembly (3) is disposed on the main body (1) and includes a drive member (31). The drive member (31) is capable of moving along the vertical direction to drive the sling lifting member (2) to move upward and tighten the sling (10) so that the sling (10) binds the hoisted object (40).

2. The externally adjustable harness length of surplus length according to claim 1, characterized in that It also includes multiple pressure-bearing pads (4); The main body (1) has a groove extending along the vertical direction, the sling lifting member (2) is slidably disposed in the groove, the main body (1) has a notch that connects to the groove and extends along the vertical direction, and the pressure pad (4) is configured to be placed between the bottom surface of the sling lifting member (2) and the groove through the notch.

3. The externally adjustable harness length of surplus length according to claim 2, characterized in that The multiple pressure-bearing pads (4) have the same thickness; or At least two of the plurality of pressure pads (4) have different thicknesses.

4. The adjustable harness length of leash extender of claim 1, wherein, The lifting member (2) is provided with an insertion hole (21) extending in the vertical direction; The drive component (31) includes a first shaft segment and a second shaft segment. The outer diameter of the first shaft segment is smaller than the outer diameter of the second shaft segment, and the outer diameter of the second shaft segment is larger than the diameter of the insertion hole (21). The first shaft segment can be inserted into the insertion hole (21).

5. An externally adjustable harness length-of-letout according to claim 4, wherein, The main body (1) has a threaded hole extending along the vertical direction. The drive member (31) is threaded through the threaded hole, and one end can be inserted into the insertion hole (21), while the other end is exposed outside the threaded hole.

6. An externally adjustable harness length-of-letout according to claim 5, wherein, The drive assembly (3) further includes a rotary handle (32), which is connected to one end of the drive member (31) exposed in the threaded hole.

7. An externally adjustable harness length length-of-tail adjustment as in claim 6, wherein The rotary handle (32) is provided with a connection hole for connecting an electric wrench.

8. The adjustable harness length of leash extender of claim 1, wherein, The main body (1) has multiple through holes (11); The external structure with adjustable sling allowance also includes multiple fasteners, which pass through the through hole (11) and can be threaded to the lifting device (20).

9. A spreader device, characterized in that It includes a lifting device (20), a sling (10), and an external structure with adjustable sling allowance length as described in any one of claims 1-8, wherein the sling (10) is connected to the lifting device (20), the main body (1) is connected to the lifting device (20), and the sling is placed on the sling lifting member (2).

10. The spreader device of claim 9, wherein, The lifting device (20) is provided with an external structure with adjustable sling length at both ends in the first direction, and the first direction is perpendicular to the vertical direction.

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