Lifting appliance convenient to adjust length
By designing a length-adjustable spreader, including a strap length adjustment device and a spacing adjustment device, the problem of the inability to adjust the length of the strap in the prior art is solved, and the stability and safety of the goods during the lifting process are improved.
Patent Information
- Application Number
- CN202421424804.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The prior art cannot adjust the length of the suspender, causing the cargo to tilt or shake during lifting, affecting stability.
A spreader including a suspender ring, a first suspender, a second suspender, a suspender length adjustment device and a spacing adjustment device are designed. The suspender length adjustment device realizes the adjustment of the suspender length through the limiting plate, the fixed clamping member and the moving clamping member, and the spacing adjustment device adjusts the spacing between the L-shaped plates through threaded connections.
It realizes flexible adjustment of the length of the suspender, ensures that the cargo is fully supported during the lifting process, reduces shaking and tilting, and improves the stability and safety of the cargo.
Smart Images
Figure CN222647424U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of slings, and in particular relates to a sling which is convenient for adjusting the length. Background Art
[0002] The connecting part between the crane or the hoisting body and the hoisted object is the sling. The types, specifications, shapes, etc. of workpieces in the lifting industry vary greatly, and slings specially designed to suit the workpieces are required. When selecting the specifications of the sling, the size and shape of the goods being hoisted must be taken into consideration.
[0003] A Chinese patent with application number 2020224217124 discloses a lifting sling with a high-strength positioning mechanism, including a crossbeam, a column is arranged in the middle of the crossbeam, support frames are connected to both ends of the crossbeam, and a hanging ring is connected to the upper end of the support frame. Mounting frames are installed at both ends below the crossbeam, and a lifting assembly is arranged in the mounting frame; the lifting assembly includes a guide wheel, a guide chain plate, a guide motor, a lifting steel rope and a lifting sling assembly, and the guide wheel is fixed inside the mounting frame through a movable shaft.
[0004] In the above patent solution, multiple guide chain plates are provided to improve the stability during the lifting process. However, the stability of the lifting process is mainly related to the size of the cargo and the length of the sling in the sling. The length of the sling in the sling determines the distance between the cargo and the crane, which directly affects the stability of the cargo. For larger cargoes, longer slings are required to ensure that the cargo has sufficient support area and stability during the lifting process. Too short slings may not cover the main support points of the cargo, causing the cargo to tilt or shake during lifting. For smaller cargoes, the sling length needs to be relatively short to prevent the cargo from sliding or tilting. However, the above technical solution and the prior art are currently unable to adjust the length of the sling. Utility Model Content
[0005] To solve the above problems, the utility model provides a sling that is easy to adjust the length, including a sling ring, a first sling and a second sling are provided at both sides below the sling ring, and the first sling and the second sling are connected to a sling length adjustment device, the bottom of the first sling is connected to a first L-shaped plate, the bottom of the second sling is connected to the second L-shaped plate, the bottom of the first L-shaped plate is connected to the first L-shaped block, the bottom of the second L-shaped plate is connected to the second L-shaped block, and the spacing adjustment device is connected between the first L-shaped block and the second L-shaped block, and the sling length adjustment device includes a first limiting plate, a second limiting plate, a fixed clamping piece and a movable clamping piece, the first limiting plate is provided with a first fixing hole and a first sliding groove, the upper part of the first sliding groove is connected to a plurality of first positioning holes, and the second limiting plate is provided with a second fixing hole and a second sliding groove , a plurality of second positioning holes are provided above the second slide groove, and the fixed clamping member includes a first limiting roller located between the first fixing hole and the second fixing hole, one end of the first limiting roller passes through the first fixing hole and is connected to the first connecting arm, the other end of the first limiting roller passes through the second fixing hole and is connected to the second connecting arm, and the second limiting roller is connected above the first limiting plate and the second limiting plate between the first connecting arm and the second connecting arm, and the movable clamping member includes a third limiting roller located between the first positioning hole and the second positioning hole, one end of the third limiting roller passes through the first positioning hole and is connected to the third connecting arm, the other end of the third limiting roller passes through the second positioning hole and is connected to the fourth connecting arm, and the fourth limiting roller is connected below the first limiting plate and the second limiting plate between the third connecting arm and the fourth connecting arm.
[0006] Preferably, a rotating shaft is rotatably provided inside the cylindrical filter cartridge, and the connection between the two ends of the third limiting roller and the third connecting arm and the fourth connecting arm is bolted.
[0007] Preferably, the spacing adjustment device includes a hollow threaded tube, a first threaded rod and a second threaded rod, one end of the first threaded rod is connected to the first L-shaped block, the other end of the first threaded rod is threadedly connected to the hollow threaded tube, one end of the second threaded rod is connected to the second L-shaped block, the other end of the second threaded rod is also threadedly connected to the hollow threaded tube, and the first internal thread and the second internal thread are respectively provided on both sides of the interior of the hollow threaded rod, and the first internal thread and the second internal thread are symmetrically arranged.
[0008] Preferably, the tops of the first and second slings are both connected with belt rings, the first and second slings are both connected with the sling rings through the belt rings, and a U-shaped protective pad is provided at the lower part of the upper side of the belt ring.
[0009] Preferably, a groove is provided on the outer periphery of the U-shaped protective pad, and an adhesive fastener is provided on the outer side of the groove.
[0010] The advantages of the utility model are:
[0011] 1. This solution is equipped with a sling length adjustment device, which can easily adjust the length of the sling. The operator can ensure that the sling fully covers the goods according to the actual situation and provide sufficient fixed support to reduce the shaking and tilting of the goods during the lifting process, reduce the risk of accidents and improve stability.
[0012] 2. This solution is provided with a spacing adjustment device, by which the spacing between the first L-shaped plate and the second L-shaped plate can be adjusted, and the support position can be freely adjusted according to the size and shape of different goods. This means that whether it is a large or small cargo, it can get appropriate support during the lifting process, thereby ensuring the stability of the cargo during the lifting process.
[0013] 3. In this solution, a U-shaped protective pad is connected to the bottom of the belt ring, which can reduce the wear between the belt ring and the lifting ring, protect the service life of the belt ring, and improve the stability of the sling. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is the overall structure diagram of the utility model.
[0015] Figure 2 This is a three-dimensional structural diagram of the utility model sling length adjustment device
[0016] Figure 3 This is a structural diagram of the first limiting plate and the second limiting plate of the utility model.
[0017] Figure 4 This is a structural diagram of the fixed clamping piece of the utility model.
[0018] Figure 5 This is a structural diagram of the mobile card connector of the utility model.
[0019] Figure 6 This is a structural diagram of the first state of the sling length adjustment device of the utility model.
[0020] Figure 7 This is a structural diagram of the second state of the sling length adjustment device of the utility model.
[0021] Figure 8 This is a structural diagram of the spacing adjustment device of the utility model.
[0022] Fig. 9 This is the internal structure diagram of the spacing adjustment device of the utility model.
[0023] Fig.10 This is a structural diagram of the belt ring and the lifting ring connection of the utility model.
[0024] Fig.11This is a structural diagram of a U-shaped protective pad of the utility model.
[0025] In the figure: 1 a lifting ring, 2 a first lifting strap, 3 a second lifting strap, 4 a first L-shaped plate, 5 a second L-shaped plate, 6 a first L-shaped block, 7 a second L-shaped block, 8 a first limiting plate, 9 a second limiting plate, 10 a first fixing hole, 11 a first sliding groove, 12 a first positioning hole, 13 a second fixing hole, 14 a second sliding groove, 15 a second positioning hole, 16 a first limiting roller, 17 a first connecting arm, 18 a second connecting arm, 19 a second limiting roller, 20 a third limiting roller, 21 a third connecting arm, 22 a fourth connecting arm, 23 a fourth limiting roller, 24 a hollow threaded tube, 25 a first threaded rod, 26 a second threaded rod, 27 a belt ring, 28 a U-shaped protective pad, 29 a groove, 30 a bonding fastener, 31 a first internal thread, 32 a second internal thread. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting, or gluing. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example 1
[0029] like Figure 1As shown, a sling that is easy to adjust in length comprises a sling ring 1, the upper part of the sling ring 1 is connected to a crane, a first sling 2 and a second sling 3 are provided on both sides of the lower part of the sling ring 1, a first L-shaped plate 4 is connected to the bottom of the first sling 2, a second L-shaped plate 5 is connected to the bottom of the second sling 3, a first L-shaped block 6 is welded to the bottom of the first L-shaped plate 4, a second L-shaped block 7 is welded to the bottom of the second L-shaped plate 5, a spacing adjustment device is connected between the first L-shaped block 6 and the second L-shaped block 7, the spacing adjustment device is used to connect and adjust the spacing between the first L-shaped plate 4 and the second L-shaped plate 5, the first L-shaped plate 4 and the second L-shaped plate 5 are used to support the bottom ends of the cargo, and the first sling 2, the second sling 3 and the first L-shaped block 6 and the second L-shaped block 7 at the bottom and the spacing adjustment device form an isosceles triangle structure. When lifting goods, taking steel plates as an example, the bottom two sides of the steel plate are placed on the first L-shaped plate 4 and the second L-shaped plate 5, and then the two sides of the steel plate are tied and fixed to the first L-shaped plate 4 and the second L-shaped plate 5 by binding items such as ropes, and the steel plate is lifted by the first sling 2 and the second sling 3 driven by the crane.
[0030] Combination Figure 2-3 The first sling 2 and the second sling 3 are connected with a sling length adjustment device for adjusting the length of the two slings. The sling length adjustment device includes a first limit plate 8, a second limit plate 9, a fixed clamping member and a movable clamping member. The first limit plate 8 is provided with a first fixing hole 10 and a first slide groove 11, and a plurality of first positioning holes 12 are connected above the first slide groove 11. The second limit plate 9 is provided with a second fixing hole 13 and a second slide groove 14, and a plurality of second positioning holes 15 are connected above the second slide groove 14. The first limit plate 8 and the second limit plate 9 are arranged in parallel.
[0031] Combination Figure 2-4 The fixed clamping member includes a first limiting roller 16 located between the first fixing hole 10 and the second fixing hole 13, the neck of one end of the first limiting roller 16 passes through the first fixing hole 10 and is connected to the first connecting arm 17, the neck of the other end of the first limiting roller 16 passes through the second fixing hole 13 and is connected to the second connecting arm 18, and a second limiting roller 19 is connected between the first connecting arm 17 and the second connecting arm 18 and located above the first limiting plate 8 and the second limiting plate 9. The first limiting roller 16 and the second limiting roller 19 are arranged in parallel, and the necks at both ends of the first limiting roller 16 can be welded and fixed to the fixing holes on both sides, or two bolts can be respectively passed through the bottom of the first connecting arm 17 and the second connecting arm 18 and screwed to the necks at both ends of the first limiting roller 16, so that the first limiting roller 16 is locked and fixed with the two limiting plates and the two connecting arms, and the connection method of the second limiting roller 19 to the connecting arms on both sides can also be a fixed connection method such as welding or screwing.
[0032] Combination Figure 5The movable clamping member includes a third limiting roller 20 located between the first positioning hole 12 and the second positioning hole 15. The neck of one end of the third limiting roller 20 passes through the first positioning hole 12 and is connected to the third connecting arm 21. The neck of the other end of the third limiting roller 20 passes through the second positioning hole 15 and is connected to the fourth connecting arm 22. A fourth limiting roller 23 is connected between the third connecting arm 21 and the fourth connecting arm 22 and located below the first limiting plate 8 and the second limiting plate 9. The fourth limiting roller 23 is arranged parallel to the third limiting roller 20. The connection between the two ends of the third limiting roller 20 and the third connecting arm 21 and the fourth connecting arm 22 is bolted. The bolts pass through the third connecting arm 21 and the fourth connecting arm 22 and are bolted to the neck of the third limiting roller 20. The third limiting roller 20 and the connecting arms on both sides are locked and fixed on the first positioning hole 12 and the second positioning hole 15. The second positioning holes 15 on the first limiting plate 8 and the first positioning hole 12 and the second limiting plate 9 correspond to each other. The connection between the two ends of the fourth limiting roller 23 and the third connecting arm 21 and the fourth connecting arm 22 is also bolted. By changing the distance between the third limiting roller 20 and the first limiting roller 16, the length of the sling can be changed.
[0033] like Figure 6 As shown, the third limiting roller 20 is fixed in the first positioning hole 12 and the second positioning hole 15 which are farthest from the first fixing hole 10 and the second fixing hole 13. At this time, the third limiting roller 20 is farthest from the first limiting roller 16. Figure 6 As shown by arrow K1 in the figure, one end of the sling passes through the top of the fourth limiting roller 23 and passes through the first limiting roller 16 to make a turn. As shown by arrow K2, the sling passes through the first limiting roller 16 and then passes through the third limiting roller 20 to make another turn. As shown by arrow K3, the sling passes through the bottom of the second limiting roller 19 after passing through the third limiting roller 20. When the length of the sling needs to be increased, as shown by arrow K4, the sling passes through the third limiting roller 20 and then passes through the bottom of the second limiting roller 19. Figure 7 As shown, after the bolts on the third limiting roller 20 and the fourth limiting roller 23 are removed, the two ends of the third limiting roller 20 are installed on the adjacent first limiting hole and the second limiting hole. At this time, the position between the third limiting roller 20 and the first limiting roller 16 is relative to Figure 6The distance between the first limiting roller 16 and the third limiting roller 20 becomes closer, and the sling still passes through the first limiting roller 16 and the third limiting roller 20 in sequence in the original manner. Since the distance between the first limiting roller 16 and the third limiting roller 20 becomes closer, the length of the sling staying in the first limiting plate 8 and the second limiting plate 9 becomes shorter, and the length of the external sling becomes longer, and the distance between the top of the sling and the cargo becomes longer. Similarly, if you want to shorten the length of the external sling, you only need to lengthen the distance between the first limiting roller 16 and the third limiting roller 20 to shorten the length of the external sling, and the distance between the top of the sling and the cargo becomes shorter. Therefore, through the sling length adjustment device, the length of the sling can be easily adjusted, and the operator can ensure that the sling fully covers the cargo according to the actual situation and provide sufficient fixed support, thereby reducing the shaking and tilting of the cargo during the lifting process, reducing the risk of accidents, and improving stability.
[0034] Combination Figure 8-9 In this embodiment, the spacing adjustment device includes a hollow threaded tube 24, a first threaded rod 25 and a second threaded rod 26. One end of the first threaded rod 25 is connected to the first L-shaped block 6, and the other end of the first threaded rod 25 is threadedly connected to the hollow threaded tube 24. One end of the second threaded rod 26 is connected to the second L-shaped block 7, and the other end of the second threaded rod 26 is also threadedly connected to the hollow threaded tube 24. The first internal thread 31 and the second internal thread 32 are respectively provided on both sides of the interior of the hollow threaded rod. The first internal thread 31 and the second internal thread 32 are symmetrically arranged. The first threaded rod 25 is connected to the hollow threaded rod. The first internal thread 31 of the hollow threaded rod 24 is threadedly connected, and the second threaded rod 26 is threadedly connected with the second internal thread 32 in the hollow threaded rod. Since the first internal thread 31 and the second internal thread 32 are symmetrically arranged, while ensuring that the first threaded rod 25 and the second threaded rod 26 are fixed, as long as the hollow threaded tube 24 is rotated, the first threaded rod 25 and the second threaded rod 26 can be moved to the middle or to both sides at the same time, so as to adjust the spacing between the first L-shaped block 6 and the second L-shaped block 7, that is, to adjust the spacing between the first L-shaped plate 4 and the second L-shaped plate 5. By adjusting the spacing between the first L-shaped plate 4 and the second L-shaped plate 5 through the spacing adjustment device, the support position can be freely adjusted according to the size and shape of different goods. This means that whether it is a large cargo or a small cargo, it can get appropriate support during the lifting process, thereby ensuring the stability of the cargo during the lifting process. Example 2
[0035] Combination Figure 10-11This embodiment has the same parts as the embodiment 1, and the difference is that: the tops of the first sling 2 and the second sling 3 are both connected with a belt ring 27, and the first sling 2 and the second sling 3 are both connected to the ring 1 through the belt ring 27. Since the slings are easy to move, there will be frequent friction between the belt ring 27 and the ring 1. The ring 1 is made of metal and generally has a long service life, while the belt ring 27 is made of fiber and is prone to wear and even breakage. For this reason, a U-shaped protective pad 28 is provided at the lower part of the upper side of the belt ring 27. The U-shaped protective pad 28 replaces the belt ring 27 to rub against the ring 1 to protect the belt ring 27. The U-shaped structure can fit the shape of the belt ring 27. The outer periphery of the U-shaped protective pad 28 is provided with a groove 29. The groove 29 can make the outer periphery of the belt ring 27 embedded, so that the U-shaped protective pad 28 and the belt ring 27 fit better. The outer side of the groove 29 is provided with an adhesive fastener 30. The adhesive fastener 30 can use a Velcro structure to ensure that the U-shaped protective pad 28 can be put on the belt ring 27 without falling off and to facilitate the replacement of the U-shaped protective pad 28 later. The U-shaped protective pad 28 can reduce the wear between the belt ring 27 and the lifting ring 1, protect the service life of the belt ring 27, and improve the stability of the use of the sling.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sling that is easy to adjust in length, characterized in that: The invention comprises a lifting ring (1), wherein a first lifting belt (2) and a second lifting belt (3) are provided on both sides below the lifting ring (1), the first lifting belt (2) and the second lifting belt (3) are connected to a lifting belt length adjustment device, the bottom of the first lifting belt (2) is connected to a first L-shaped plate (4), the bottom of the second lifting belt (3) is connected to a second L-shaped plate (5), the bottom of the first L-shaped plate (4) is connected to a first L-shaped block (6), the bottom of the second L-shaped plate (5) is connected to a second L-shaped block (7), and the first L-shaped block (6) and the second L-shaped block (7) are connected to each other. A spacing adjustment device is connected between the blocks (7), and the sling length adjustment device comprises a first limiting plate (8), a second limiting plate (9), a fixed clamping member and a movable clamping member, the first limiting plate (8) is provided with a first fixing hole (10) and a first slide groove (11), the upper part of the first slide groove (11) is connected to a plurality of first positioning holes (12), the second limiting plate (9) is provided with a second fixing hole (13) and a second slide groove (14), the upper part of the second slide groove (14) is connected to a plurality of second positioning holes (15) The fixed clamping member comprises a first limiting roller (16) located between the first fixing hole (10) and the second fixing hole (13); one end of the first limiting roller (16) passes through the first fixing hole (10) and is connected to a first connecting arm (17); the other end of the first limiting roller (16) passes through the second fixing hole (13) and is connected to a second connecting arm (18); a second limiting roller (19) is connected between the first connecting arm (17) and the second connecting arm (18) and located above the first limiting plate (8) and the second limiting plate (9). The movable clamping member comprises a third limiting roller (20) located between the first positioning hole (12) and the second positioning hole (15); one end of the third limiting roller (20) passes through the first positioning hole (12) and is connected to a third connecting arm (21); the other end of the third limiting roller (20) passes through the second positioning hole (15) and is connected to a fourth connecting arm (22); a fourth limiting roller (23) is connected between the third connecting arm (21) and the fourth connecting arm (22) and below the first limiting plate (8) and the second limiting plate (9).
2. The sling that is easy to adjust in length according to claim 1, characterized in that: The connection between the two ends of the third limiting roller (20) and the third connecting arm (21) and the fourth connecting arm (22) is bolted, and the connection between the two ends of the fourth limiting roller (23) and the third connecting arm (21) and the fourth connecting arm (22) is also bolted.
3. The sling that is easy to adjust in length according to claim 2, characterized in that: The spacing adjustment device comprises a hollow threaded tube (24), a first threaded rod (25) and a second threaded rod (26); one end of the first threaded rod (25) is connected to the first L-shaped block (6); the other end of the first threaded rod (25) is threadedly connected to the hollow threaded tube (24); one end of the second threaded rod (26) is connected to the second L-shaped block (7); the other end of the second threaded rod (26) is also threadedly connected to the hollow threaded tube (24); the first internal thread (31) and the second internal thread (32) are respectively provided on two sides of the interior of the hollow threaded tube (24); the first internal thread (31) and the second internal thread (32) are symmetrically arranged.
4. The sling that is easy to adjust in length according to claim 3, characterized in that: The tops of the first sling (2) and the second sling (3) are both connected to belt rings (27); the first sling (2) and the second sling (3) are both connected to the sling ring (1) via the belt rings (27); and a U-shaped protective pad (28) is provided at the lower part of the upper side of the belt ring (27).
5. The length-adjustable sling according to claim 4, characterized in that: A groove portion (29) is provided on the outer periphery of the U-shaped protection pad (28), and an adhesive fastener (30) is provided on the outer side of the groove portion (29).