Adjustable lifting appliance

Abstract

The utility model relates to the technical field of building construction, and discloses an adjustable lifting appliance which comprises a lifting appliance cross arm suitable for being connected with lifting equipment, the lifting appliance cross arm is provided with an installation cavity, an installation opening is formed in the upper portion of the lifting appliance cross arm and communicated with the installation cavity, a through groove is formed in the bottom of the lifting appliance cross arm and communicated with the installation cavity, and the through groove is communicated with the installation cavity. The through groove extends in the length direction of the lifting appliance cross arm; the lifting lug is connected with the lifting appliance cross arm in an inserted mode, the lifting lug is inserted into the mounting cavity through the mounting opening and inserted into the through groove, and the lifting lug can be movably arranged along the through groove. According to the adjustable lifting appliance, the through groove is formed in the lifting appliance cross arm, and the lifting lug moves in the through groove, so that the position of the lifting lug on the lifting appliance cross arm is changed, the lifting appliance can be adjusted according to different bearing capacities of hoisting equipment to a lifted object, the applicability of the adjustable lifting appliance is improved, the lifting appliance does not need to be frequently replaced, materials are saved, and the cost is reduced. And the waste of labor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an adjustable sling. Background Art

[0002] Steel structure projects often involve heavy components that require dual crane lifting. Due to the varying distances between the two cranes and the load being hoisted, as well as the differences in the crane models themselves, the loads shared by each crane during the lifting process will vary. Eccentric lifting is necessary to adjust the loads borne by each crane. Existing cranes are fixed in size and position, suitable for only a single operating condition. Changing the cranes results in wasted materials and labor, resulting in low economic performance. Utility Model Content

[0003] In view of this, the utility model provides an adjustable sling to solve the problem that the sling cannot be adjusted to adapt to the lifting weight borne by different lifting equipment when two machines are required for lifting, and the problem that changes in the sling cause waste of materials and labor.

[0004] The utility model provides an adjustable sling, comprising: a sling cross arm, suitable for being connected to a lifting device, the sling cross arm having an installation cavity, a mounting opening being provided on the upper portion of the sling cross arm, the mounting opening being communicated with the installation cavity, a through groove being provided on the bottom of the sling cross arm, the through groove being communicated with the installation cavity, and the through groove extending along the length direction of the sling cross arm; a lifting ear, plugged into the sling cross arm, the lifting ear being inserted from the mounting opening into the installation cavity and into the through groove, and the lifting ear being movably provided along the through groove.

[0005] Beneficial effect: By opening a through slot on the cross arm of the spreader, the lifting eye can be moved in the through slot, thereby changing the position of the lifting eye on the cross arm of the spreader, so that the spreader can be adjusted according to the different load-bearing capacities of the lifting equipment for the objects being lifted, thereby improving the applicability of the adjustable spreader, eliminating the need for frequent replacement of the spreader, saving materials, and avoiding waste of labor.

[0006] In an optional embodiment, the lifting ear includes a orifice plate and a sealing plate, the sealing plate is arranged on the upper side of the orifice plate, the upper end of the orifice plate is connected to the bottom surface of the sealing plate, the lower end of the orifice plate passes through the through groove, and the lower end of the orifice plate is provided with a lifting hole, which is suitable for connection with the object to be lifted.

[0007] In an optional embodiment, the lifting ear further includes a lifting ear rib plate, which is connected to the side wall surface of the orifice plate and the bottom surface of the sealing plate at the same time. A plurality of lifting ear rib plates are provided, and the plurality of lifting ear rib plates are arranged on opposite sides of the orifice plate.

[0008] Beneficial effect: by setting the lifting ear rib plate, the load-bearing capacity of the lifting ear is further improved, damage to the lifting ear is avoided, and the service life of the lifting ear is increased.

[0009] In an optional embodiment, the sling crossarm includes a crossarm body and a snap-on assembly, the installation cavity is opened in the crossarm body, the installation port is opened at the top of the crossarm body, the through groove is opened at the bottom of the crossarm body, the snap-on assembly is arranged on opposite sides corresponding to the through groove, and protrudes upward from the bottom surface of the sling crossarm to form a slot, the slot is connected to the through groove, and the lifting ear is plugged into the slot.

[0010] Beneficial effect: By setting the snap-fit assembly to form a slot, the lifting ear is further limited, which prevents the position of the lifting ear from moving during the lifting process, causing the lifting equipment to be unable to bear the weight of the lifted object, and the lifting equipment and lifting equipment to be easily damaged.

[0011] In an optional embodiment, a plurality of the clamping assemblies are provided, and the plurality of the clamping assemblies are arranged at intervals along the extension direction of the through slot.

[0012] Beneficial effect: By providing a plurality of clamping components, the lifting eye can still be limited after the position is adjusted, thereby further improving the stability and safety of the lifting eye during the lifting process.

[0013] In an optional embodiment, the card assembly includes a first card plate, a second card plate, a third card plate and a fourth card plate, the first card plate and the second card plate are spaced apart on one side of the through slot, the third card plate and the fourth card plate are spaced apart on the other side of the through slot, the first card plate, the second card plate, the third card plate and the fourth card plate are combined to form the slot, the lifting ear is plugged into the slot, and the bottom surface of the sealing plate is simultaneously in contact with the top surfaces of the first card plate, the second card plate, the third card plate and the fourth card plate.

[0014] In an optional embodiment, the distance between the first clamping plate and the second clamping plate is greater than the thickness of the ear rib plate, and the distance between the third clamping plate and the fourth clamping plate is greater than the thickness of the ear rib plate.

[0015] Beneficial effect: The distance between the slots is set to be greater than the thickness of the lifting ear reinforcement plate, which allows the lifting ear to be inserted into the slot while ensuring a certain safety gap between the lifting ear and the slot, thereby preventing the lifting ear from being stuck with the slot during lifting and causing damage to the lifting ear.

[0016] In an optional embodiment, the first clamping plate, the second clamping plate, the third clamping plate and the fourth clamping plate are all welded to the spreader cross arm.

[0017] In an optional embodiment, the adjustable sling further includes a cross arm rib, and a plurality of the cross arm ribs are provided. The plurality of cross arm ribs are arranged in the installation cavity at intervals along the length direction of the sling cross arm and are connected to the inner wall surface of the sling cross arm.

[0018] Beneficial effect: By arranging the cross arm ribs, the load-bearing capacity of the spreader cross arm is further improved, the structure of the spreader cross arm is made stronger, and the service life of the spreader cross arm is increased.

[0019] In an optional embodiment, the cross arm rib is welded to the inner wall of the spreader cross arm.

[0020] Beneficial effect: By welding the cross arm ribs to the inner wall of the cross arm body, the bearing capacity of the spreader cross arm is effectively improved, and the structural stability of the spreader cross arm is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the main perspective structure of the adjustable sling according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the perspective structure of the adjustable sling in a top view according to an embodiment of the present utility model;

[0024] Figure 3 This is a front view of the lifting lug of the adjustable sling according to an embodiment of the present utility model;

[0025] Figure 4 This is a left side view of the lifting lug of the adjustable sling according to an embodiment of the present invention;

[0026] Figure 5 This is a top view of the lifting lug of the adjustable sling according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Sling crossarm; 101. Through slot; 102. Mounting cavity; 103. Lifting point of lifting equipment; 104. Crossarm body; 105. Snap-on assembly; 1051. First clamping plate; 1052. Second clamping plate; 1053. Third clamping plate; 1054. Fourth clamping plate; 1055. Slot; 2. Lifting ear; 201. Orifice plate; 2011. Lifting hole; 202. Closing plate; 203. Lifting ear rib plate; 3. Crossarm rib plate. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0030] The following combination Figures 1 to 5 , describing the embodiments of the present utility model.

[0031] According to an embodiment of the present invention, on the one hand, Figure 1 and Figure 2 As shown, an adjustable sling is provided, comprising: a sling crossarm 1 and a lifting lug 2. The sling crossarm 1 is suitable for connection to lifting equipment. The sling crossarm 1 has a mounting cavity 102. A mounting opening is defined at the top of the sling crossarm 1, communicating with the mounting cavity 102. A through slot 101 is defined at the bottom of the sling crossarm 1, communicating with the mounting cavity 102 and extending along the length of the sling crossarm 1. The lifting lug 2 is pluggable with the sling crossarm 1, inserted through the mounting opening into the mounting cavity 102 and into the through slot 101. The lifting lug 2 is movable along the through slot 101.

[0032] By providing a through slot 101 on the spreader cross arm 1, the lifting ear 2 is moved in the through slot 101, thereby changing the position of the lifting ear 2 on the spreader cross arm 1, so that the spreader can be adjusted according to the different load-bearing capacities of the lifting equipment for the suspended object, thereby improving the applicability of the adjustable spreader, eliminating the need for frequent replacement of the spreader, saving materials, and avoiding waste of labor.

[0033] Specifically, in this embodiment, the cross arm 1 of the hoist is a box-shaped square tube, which is horizontally arranged along its length. A mounting opening is provided at the top of the horizontally arranged box-shaped square tube, and a through slot 101 is provided at the bottom of the horizontally arranged box-shaped square tube and extends along the extension direction of the box-shaped square tube. The box-shaped square tube has good mechanical properties and is easy to manufacture, meeting the requirements for lifting heavy objects while also achieving certain economic benefits.

[0034] Specifically, in this embodiment, Figure 1 As shown, a plurality of lifting equipment lifting points 103 are provided on the upper side of the sling cross arm 1, which are connected to the lifting equipment through the plurality of lifting equipment lifting points 103. The lifting equipment lifting points 103 are connecting plates, and connecting holes are provided on the upper side of the connecting plates. The lifting equipment is connected to the sling cross arm 1 through the connecting holes.

[0035] In one embodiment, Figures 1 to 5 As shown, the lifting ear 2 includes a perforated plate 201 and a sealing plate 202. The sealing plate 202 is arranged on the upper side of the perforated plate 201. The upper end of the perforated plate 201 is connected to the bottom surface of the sealing plate 202. The lower end of the perforated plate 201 passes through the through groove 101. The lower end of the perforated plate 201 is provided with a lifting hole 2011, which is suitable for connecting with the object to be lifted.

[0036] In one embodiment, Figures 1 to 5 As shown, the lifting lug 2 further includes a lifting lug rib 203, which is connected to the side wall of the orifice plate 201 and the bottom surface of the sealing plate 202. A plurality of lifting lug ribs 203 are provided, and the plurality of lifting lug ribs 203 are disposed on opposite sides of the orifice plate 201. The provision of the lifting lug ribs 203 further improves the load-bearing capacity of the lifting lug 2, prevents damage to the lifting lug 2, and increases the service life of the lifting lug 2.

[0037] It should be noted that after the object is lifted, its weight needs to be transferred to the cross arm 1 of the sling to distribute the force. The closing plate 202 of the lifting ear 2 is a force transfer component, which is subjected to force together with the lifting ear reinforcement plate 203 to transfer the weight of the object to the cross arm 1 of the sling.

[0038] In one embodiment, Figure 1 and Figure 2 As shown, the sling crossarm 1 includes a crossarm body 104 and a snap-on assembly 105. The mounting cavity 102 is provided in the crossarm body 104, the mounting opening is provided at the top of the crossarm body 104, and the through slot 101 is provided at the bottom of the crossarm body 104. The snap-on assembly 105 is provided on opposite sides of the through slot 101 and protrudes upward from the bottom surface of the sling crossarm 1 to form a slot 1055. The slot 1055 is connected to the through slot 101, and the lifting lug 2 is plugged into the slot 1055. By providing the snap-on assembly 105 to form the slot 1055, the lifting lug 2 is further limited in position, preventing the lifting lug 2 from moving during the lifting process, which would cause the lifting equipment to be unable to bear the weight of the object being lifted, and thus easily damage the lifting equipment and the sling.

[0039] In one embodiment, Figure 1 and Figure 2As shown, a plurality of clamping assemblies 105 are provided, and the plurality of clamping assemblies 105 are spaced apart along the extending direction of the through slot 101. By providing a plurality of clamping assemblies 105, the lifting eye 2 can still be limited after the position is adjusted, further improving the stability and safety of the lifting eye 2 during the lifting process.

[0040] Specifically, if Figure 1 and Figure 2 As shown, in this embodiment, the distance between adjacent clamping assemblies 105 is 1 / 8 of the length L of the spreader cross arm 1.

[0041] It should be noted that, in this embodiment, only three lifting ears 2 are used for illustration. Figure 1 and Figure 2 As shown, the distance between the leftmost lifting eye 2 and the left end of the spreader crossarm 1 is 1 / 4 of the length L of the spreader crossarm 1, and the second and third lifting eyes 2 are set at intervals of 1 / 8 of the length L of the spreader crossarm 1. It can be seen that several lifting eyes 2 are set at intervals of 1 / 8 of the length L of the spreader crossarm 1.

[0042] In one embodiment, Figure 2 As shown, the snap-on assembly 105 includes a first clip 1051, a second clip 1052, a third clip 1053 and a fourth clip 1054. The first clip 1051 and the second clip 1052 are spaced apart on one side of the through slot 101, and the third clip 1053 and the fourth clip 1054 are spaced apart on the other side of the through slot 101. The first clip 1051, the second clip 1052, the third clip 1053 and the fourth clip 1054 are surrounded to form a slot 1055, and the ear 2 is plugged into the slot 1055. The bottom surface of the sealing plate 202 is in contact with the top surfaces of the first clip 1051, the second clip 1052, the third clip 1053 and the fourth clip 1054 at the same time.

[0043] In one embodiment, the distance between the first clamping plate 1051 and the second clamping plate 1052 is greater than the thickness of the lifting ear rib 203, and the distance between the third clamping plate 1053 and the fourth clamping plate 1054 is greater than the thickness of the lifting ear rib 203. The distance between the slots 1055 is set to be greater than the thickness of the lifting ear rib 203. This allows the lifting ear 2 to be inserted into the slots 1055 while ensuring a certain clearance between the lifting ear 2 and the slots 1055. This prevents the lifting ear 2 from getting stuck in the slots 1055 during the lifting process, thereby preventing damage to the lifting ear 2.

[0044] Specifically, in this embodiment, the distance between the first clamping plate 1051 and the second clamping plate 1052 is 2 mm greater than the thickness of the ear rib 203. ，The distance between the third clamping plate 1053 and the fourth clamping plate 1054 is 2 mm larger than the thickness of the lifting ear rib 203. By setting a 2 mm movable gap, the lifting ear rib 203 and the slot 1055 are prevented from getting stuck, and the lifting ear 2 is not easy to fall out of the slot 1055, thereby ensuring the stability and safety of the lifting ear 2 during operation.

[0045] In one embodiment, the first clamping plate 1051 , the second clamping plate 1052 , the third clamping plate 1053 and the fourth clamping plate 1054 are all welded to the spreader cross arm 1 .

[0046] In one embodiment, Figure 1 and Figure 2 As shown, the adjustable spreader further includes a plurality of crossarm ribs 3, which are spaced apart along the length of the spreader crossarm 1 within the mounting cavity 102 and connected to the inner wall of the spreader crossarm 1. The provision of the crossarm ribs 3 further enhances the load-bearing capacity of the spreader crossarm 1, making the structure of the spreader crossarm 1 more robust and increasing the service life of the spreader crossarm 1.

[0047] In one embodiment, the crossarm ribs 3 are welded to the inner wall of the spreader crossarm 1. By welding the crossarm ribs 3 to the inner wall of the crossarm body 104, the load-bearing capacity of the spreader crossarm 1 is effectively increased, and the structural stability of the spreader crossarm 1 is further improved.

[0048] It should be noted that during on-site construction, the starting position of the hoisted object is the on-site yard or fixed stacking position. During lifting, the distance between the hoisted object and the two lifting equipment is different. The lifting weight of the lifting equipment is different due to the different lifting radius. Therefore, the position of the lifting eye 2 needs to be adjusted according to the working conditions.

[0049] Specifically, when adjusting the position of the lifting ear 2 on the cross arm 1 of the sling, first move the lifting ear 2 upward so that the lifting ear rib 203 is completely out of the slot 1055; then, move the lifting ear 2 horizontally to the position required for the lifting equipment to continue working; finally, insert the lifting ear 2 into the new slot 1055 and the through groove 101 to complete the position adjustment of the lifting ear 2.

[0050] It should be further explained that, in the present embodiment, one lifting eye 2 is provided. When the lifting equipment reaches the lifting limit position, the object to be lifted is lowered, and then the position of the lifting eye 2 is moved and the object to be lifted is connected to the lifting eye 2 and the lifting is continued. Preferably, the lifting eye 2 can be provided in number, and several lifting eyes 2 are connected to several slots 1055 at the same time. When the lifting equipment reaches the lifting limit position, there is no need to move the lifting eye 2 again. It is only necessary to replace the lifting eye 2 with the object to be lifted for connection to achieve the change in lifting weight, which further improves the lifting efficiency. The replacement of the lifting eye 2 can be achieved using the electric hoist equipment at the construction site, and can be achieved at a certain height in the air without lowering the object to the ground, thereby improving work efficiency.

[0051] When using the adjustable sling of this embodiment, first, adjust the position of the lifting lug 2 on the sling cross arm 1 according to the distance between the two lifting equipment and the object to be lifted, and prepare for lifting; then, during the lifting process, when the lifting limit position of at least one lifting equipment is reached, lower the object to be lifted and adjust the position of the lifting lug 2 on the sling cross arm 1; finally, connect the object to the adjusted lifting lug 2 and continue lifting until the object is lifted to the predetermined installation position.

[0052] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An adjustable sling, characterized in that: include: A sling cross arm (1) is suitable for connection with a lifting device, the sling cross arm (1) has an installation cavity (102), an installation opening is provided on the upper portion of the sling cross arm (1), the installation opening is communicated with the installation cavity (102), a through groove (101) is provided on the bottom of the sling cross arm (1), the through groove (101) is communicated with the installation cavity (102), and the through groove (101) extends along the length direction of the sling cross arm (1); The lifting lug (2) is plugged into the cross arm (1) of the sling, and the lifting lug (2) is inserted into the installation cavity (102) through the installation opening and inserted into the through slot (101), and the lifting lug (2) is movably arranged along the through slot (101).

2. The adjustable sling according to claim 1, characterized in that: The lifting lug (2) comprises a hole plate (201) and a sealing plate (202), wherein the sealing plate (202) is arranged on the upper side of the hole plate (201), the upper end of the hole plate (201) is connected to the bottom surface of the sealing plate (202), the lower end of the hole plate (201) passes through the through groove (101), and a lifting hole (2011) is provided at the lower end of the hole plate (201), and the lifting hole (2011) is suitable for connection with a suspended object.

3. The adjustable sling according to claim 2, characterized in that: The lifting ear (2) also includes a lifting ear rib plate (203), which is connected to the side wall surface of the orifice plate (201) and the bottom surface of the sealing plate (202) at the same time. There are a plurality of lifting ear rib plates (203), and the plurality of lifting ear rib plates (203) are arranged on opposite sides of the orifice plate (201).

4. The adjustable sling according to claim 3, characterized in that: The sling cross arm (1) includes a cross arm body (104) and a snap-on assembly (105), the installation cavity (102) is provided in the cross arm body (104), the installation opening is provided at the top of the cross arm body (104), the through slot (101) is provided at the bottom of the cross arm body (104), the snap-on assembly (105) is provided on opposite sides corresponding to the through slot (101), and is provided to protrude upward from the bottom surface of the sling cross arm (1) to form a slot (1055), the slot (1055) is provided to communicate with the through slot (101), and the lifting lug (2) is provided to be plugged into the slot (1055).

5. The adjustable spreader according to claim 4, characterized in that: A plurality of the clamping assemblies (105) are provided, and the plurality of the clamping assemblies (105) are arranged at intervals along the extension direction of the through slot (101).

6. The adjustable sling according to claim 4, characterized in that: The snap-on assembly (105) includes a first card plate (1051), a second card plate (1052), a third card plate (1053) and a fourth card plate (1054); the first card plate (1051) and the second card plate (1052) are spaced apart on one side of the through slot (101); the third card plate (1053) and the fourth card plate (1054) are spaced apart on the other side of the through slot (101); the first card plate (1051), the second card plate (1052), the third card plate (1053) and the fourth card plate (1054) are enclosed to form the slot (1055); the lifting ear (2) is plugged into the slot (1055); the bottom surface of the sealing plate (202) is in contact with the top surfaces of the first card plate (1051), the second card plate (1052), the third card plate (1053) and the fourth card plate (1054) at the same time.

7. The adjustable spreader according to claim 6, characterized in that: The distance between the first clamping plate (1051) and the second clamping plate (1052) is greater than the thickness of the ear rib (203), and the distance between the third clamping plate (1053) and the fourth clamping plate (1054) is greater than the thickness of the ear rib (203).

8. The adjustable sling according to claim 6, characterized in that: The first clamping plate (1051), the second clamping plate (1052), the third clamping plate (1053) and the fourth clamping plate (1054) are all welded to the cross arm body (104).

9. The adjustable spreader according to any one of claims 1 to 8, characterized in that: The adjustable sling also includes a cross arm rib (3), and a plurality of the cross arm ribs (3) are provided. The plurality of cross arm ribs (3) are arranged in the installation cavity (102) at intervals along the length direction of the sling cross arm (1) and are connected to the inner wall surface of the sling cross arm (1).

10. The adjustable spreader according to claim 9, characterized in that: The cross arm rib (3) is welded to the inner wall of the sling cross arm (1).

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