A lifting device for efficiently lifting large vertical steel bars

Abstract

The present invention relates to the technical field of lifting equipment, and in particular to a hoist for efficiently lifting large-sized vertical steel bars; the hoist comprises two shoulder poles that are spaced apart and detachably connected together, and a number of sliding trolleys are slidably connected to the two shoulder poles; the gap between the two shoulder poles is for the steel bars to pass through, and the sliding trolley is provided with a through slot for one end of the steel bar to pass through; the present invention is of an assembled type, with a simple and easy-to-assemble structure, strong structural displacement restriction, simple and easy-to-replace parts, and reliable safety performance; when the steel bar models are basically the same in the same project, the hoist can be assembled once and can be used for a long time, and has strong reusability; by increasing or decreasing the number of trolleys, the on-site steel bar lifting needs can be met; the sliding trolley of the present invention can move along the shoulder poles, and the steel bar lifting spacing can be adjusted, which is convenient for the overall positioning of the steel bars; the present invention can position and lift multiple steel bars at the same time, and compared with traditional lifting methods, it has high work efficiency, low risk, and is easy to control.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, and in particular to a hoist for efficiently hoisting large-sized vertical steel bars. Background Art

[0002] During the construction of piers in bridge and other construction projects, the vertical main reinforcement must be tied first, followed by the stirrups. However, the vertical main reinforcement is often large in size and poses a greater installation risk. Generally, the following two methods are used for hoisting and installation:

[0003] 1. Bundles of steel bars are hoisted horizontally to the working platform or the top of the poured pier concrete, and then manually lowered vertically to the designated position for welding or sleeve extension. Disadvantages of this method:

[0004] (1) Due to the heavy weight of steel bars, placing them on the working platform may cause the platform to deform or collapse;

[0005] (2) The steel bars are erected and moved to the designated location by manpower before installation. Due to the heavy weight of the steel bars, there are many uncontrollable factors in the process, which makes it difficult to control and has low efficiency.

[0006] 2. Use a sling to tie two points on one side of the steel bar and rely on friction to perform a single vertical lifting. Disadvantages of this method:

[0007] Friction lifting relies entirely on experience, and because it is a single lifting, the lifting frequency is high, and the possibility of steel bars slipping during the process is high, which reduces safety and work efficiency.

[0008] 3. After the entire section of pier column steel bars are tied on the ground in advance, they are hoisted as a whole, but this method is only suitable for shorter pier columns.

[0009] The first two methods mentioned above involve a certain degree of illegal operations and the risks are uncontrollable. Summary of the Invention

[0010] In response to the deficiencies in the prior art, the invention provides a hoist for efficiently lifting large-sized vertical steel bars, which solves the problems of low efficiency, high risk and difficulty in control when lifting large-sized steel bars in the prior art.

[0011] According to an embodiment of the invention, a hoist for efficiently lifting large-sized vertical steel bars comprises two shoulder poles that are spaced apart and detachably connected together, and a number of sliding trolleys are slidably connected to the two shoulder poles; the gap between the two shoulder poles is for the steel bars to be lifted to pass through, and the sliding trolley is provided with a slot for one end of the steel bar to pass through, and the end of the steel bar passing through the slot is detachably connected to a socket for limiting the falling of the steel bar; a lifting mechanism is provided on the shoulder pole.

[0012] In this embodiment, when the sling is in use, the sliding trolley is installed on the two shoulder poles, and the two shoulder poles are connected together, and the sliding trolley slides on the two shoulder poles; then one end of the steel bar to be hoisted is passed through the gap between the two shoulder poles and the through-groove on the sliding trolley in turn, and then the socket that can limit the steel bar from falling is connected to the end of the steel bar passing through the through-groove, and each mobile trolley can hoist the steel bar, and the sling equipped with several sliding trolleys can hoist several steel bars at a time; then the hoisting equipment of the prior art is connected to the hoisting mechanism on the shoulder pole to hoist the sling as a whole; after the hoisting is completed, only the detachable end of the steel bar needs to be dismantled By removing the connected sockets, the disassembly action can be carried out to enter the next lifting cycle; this solution is assembly-type, with a simple and easy-to-assemble structure, strong structural displacement restriction, simple and easy-to-replace parts, and reliable safety performance; when the steel bar models are basically the same in the same project, the hoist can be assembled once and can be used for a long time, with strong reusability; by increasing or decreasing the number of trolleys, the on-site steel bar lifting needs can be met; the sliding trolley of this solution can move along the shoulder pole, and the steel bar lifting spacing can be adjusted to facilitate the overall positioning of the steel bars; this solution can position and lift multiple steel bars at the same time, and compared with traditional lifting methods, it has high work efficiency, low risk, and is easy to control.

[0013] Furthermore, a groove is formed on the sides of the two shoulder poles facing away from each other.

[0014] Furthermore, the two ends of the two shoulder poles are detachably connected together via end connectors.

[0015] Furthermore, the bottom sides of both ends of the two shoulder poles are fixedly connected with limiting grooves, the lifting mechanism is a T-shaped hook, the bottom of the hook is embedded in the limiting groove, and the end connecting piece limits one side of the hook to prevent the hook from slipping out from the ends of the two shoulder poles.

[0016] Furthermore, both sides of the sliding trolley are slidably connected in the slots of the two shoulder poles.

[0017] Furthermore, both sides of the sliding trolley are threadedly connected with limiting bolts extending into the slots.

[0018] Furthermore, movable grooves are provided on both sides of the through groove on the sliding trolley, and a support block extending between the two shoulder poles is movably installed in the movable groove.

[0019] Furthermore, one end of the steel bar to be hoisted passing through the through slot is provided with a thread, and the sleeve is threadably connected to the end portion of the steel bar to be hoisted where the thread is provided.

[0020] Furthermore, a guide rail is fixedly connected to the shoulder pole, the guide rail is spaced apart from the shoulder pole, an electric slider is slidably connected to the bottom of the guide rail, and an electromagnet magnetically connected to the socket is fixedly installed on the bottom of the electric slider.

[0021] Furthermore, the guide rail is detachably connected to the shoulder pole.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This solution is of assembly type, with a simple and easy-to-assemble structure, strong structural displacement restriction, simple and easy-to-replace parts, and reliable safety performance. When the steel bar models are basically the same in the same project, the hoist can be assembled once and can be used for a long time with strong reusability. By increasing or decreasing the number of trolleys, the on-site steel bar lifting needs can be met. The sliding trolley of this solution can move along the shoulder pole, and the steel bar lifting spacing can be adjusted to facilitate the overall positioning of the steel bars. This solution can position and lift multiple steel bars at the same time, and compared with traditional lifting methods, it has high work efficiency, low risk, and is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a lifting device for efficiently lifting large vertical steel bars according to an embodiment of the present invention;

[0025] Figure 2 A side view of a shoulder pole according to an embodiment of the present invention

[0026] Figure 3 This is a schematic diagram of the connection between the shoulder pole, the end connector, and the hook according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic structural diagram of a sliding trolley according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection between the shoulder pole, connecting plate, guide rail, electric slider and electromagnet according to an embodiment of the present invention;

[0029] In the above drawings: 10, steel bar; 11, socket; 100, shoulder pole; 110, limiting groove; 200, end connector; 300, hook; 400, sliding trolley; 401, through groove; 402, movable groove; 410, support block; 420, limiting bolt; 500, guide rail; 510, connecting plate; 600, electric slider; 700, electromagnet. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Refer to Figures 1 to 5 This embodiment provides a hoist for efficiently lifting large-sized vertical steel bars, which includes two shoulder poles 100 that are spaced apart and detachably connected together, and a number of sliding trolleys 400 are slidably connected to the two shoulder poles 100; the gap between the two shoulder poles 100 is for the steel bars 10 to be lifted to pass through, and the sliding trolley 400 is provided with a slot 401 for one end of the steel bar 10 to pass through, and the end of the steel bar 10 passing through the slot 401 is detachably connected to a socket 11 for limiting the falling of the steel bar 10; a lifting mechanism is provided on the shoulder pole 100.

[0033] In this embodiment, when the sling is in use, the sliding trolley 400 is installed on the two shoulder poles 100, and the two shoulder poles 100 are connected together, and the sliding trolley 400 slides on the two shoulder poles 100; then, one end of the steel bar 10 to be hoisted is passed through the gap between the two shoulder poles 100 and the through-groove 401 on the sliding trolley 400 in sequence, and then the socket 11 that can limit the falling of the steel bar 10 is connected to the end of the steel bar 10 passing through the through-groove 401, and each mobile trolley can hoist the steel bar 10, and the sling equipped with several sliding trolleys 400 can hoist several steel bars 10 at a time; then, the hoisting equipment of the prior art is connected to the hoisting mechanism on the shoulder pole 100 to hoist the sling as a whole; after the hoisting is completed After completion, it is only necessary to remove the detachable connecting piece 11 at the end of the steel bar 10 to perform the disassembly action and enter the next lifting cycle; this solution is assembly-type, with a simple and easy-to-assemble structure, strong structural displacement restriction, simple and easy-to-replace parts, and reliable safety performance; when the steel bar 10 models are basically the same in the same project, the hoist can be assembled once and can be used for a long time, with strong reusability; by increasing or decreasing the number of trolleys, the on-site steel bar 10 lifting needs can be met; the sliding trolley 400 of this solution can move along the shoulder pole 100, and the lifting spacing of the steel bar 10 can be adjusted, which is convenient for the overall positioning of the steel bar 10; this solution can position and lift multiple steel bars 10 at the same time, and compared with traditional lifting methods, it has high work efficiency, low risk, and is easy to control.

[0034] Preferably, a groove is formed on the sides of the two shoulder poles 100 facing away from each other.

[0035] Among them, such as Figures 1 to 3 As shown, the shoulder pole 100 of this embodiment can directly adopt a steel section with a slot provided on one side.

[0036] Preferably, the two ends of the two shoulder poles 100 are detachably connected together via end connectors 200 .

[0037] Among them, such as Figure 1 and Figure 3 As shown, the end connector 200 is a [-shaped plate with threaded holes on the sides at both ends, and threaded holes corresponding to the above-mentioned threaded holes are provided on the grooved concave surface of the shoulder pole 100. The end connector 200 can be connected to the two ends of the shoulder poles 100 by bolts in the prior art. The end connector 200 restricts the two ends of the shoulder poles 100, so that the gap between the two shoulder poles 100 forms a closed groove, preventing the sliding trolley 400 and the steel bars 10 thereon from falling off the shoulder pole 100.

[0038] Preferably, the bottom sides of both ends of the two shoulder poles 100 are fixedly connected with a limiting groove 110, the lifting mechanism is a T-shaped hook 300, the bottom of the hook 300 is embedded in the limiting groove 110, and the end connecting piece 200 limits one side of the hook 300 to prevent the hook 300 from slipping out from the ends of the two shoulder poles 100.

[0039] Among them, such as Figure 1 、 Figure 2 、 Figure 3 as well as Figure 5 As shown, the T-shaped hook 300 is inverted, the horizontal plate on the hook 300 is embedded in the limiting groove 110, the vertical plate passes through the gap between the two shoulder poles 100, and the vertical plate passes through one end of the shoulder pole 100 to open a lifting hole, which is convenient for the lifting equipment to lift the entire sling; the above-mentioned limiting groove 110 is L-shaped, which limits the bottom and one side of the hook 300, and the end connecting piece 200 limits the other side of the hook 300, so that the hook 300 can be stably connected to the shoulder pole 100. At the same time, the hook 300 and the shoulder pole 100 are flexibly and detachably connected, which is convenient for replacing different models of hooks 300, making the sling more flexible.

[0040] Preferably, both sides of the sliding trolley 400 are slidably connected in the slots of the two shoulder poles 100 .

[0041] Among them, such as Figure 1 and Figure 4 As shown, the sliding trolley 400 slides using the slots on both sides of the shoulder pole 100 as slide rails.

[0042] Preferably, both sides of the sliding trolley 400 are threadedly connected with limiting bolts 420 that extend into the slots.

[0043] Among them, as shown in the figure, the sliding trolley 400 is concave, and the two sides of the sliding trolley 400 are protruded. Holes are opened in the protruding sides and nuts are welded in the holes to tighten the limiting bolts 420. The limiting bolts 420 limit the displacement of the sliding trolley 400 and work together with the end connecting parts 200 to limit the deformation of the shoulder pole 100. By adjusting the tightening depth of the limiting bolts 420 on both sides, the trolley can be displaced laterally. Specifically, the protruding side can be provided with a protrusion protruding upward toward the concave surface of the shoulder pole 100 to allow the sliding trolley 400 to be more stably displaced laterally on the shoulder pole 100.

[0044] Preferably, movable grooves 402 are provided on both sides of the through groove 401 of the sliding trolley 400 , and a support block 410 is movably installed in the movable groove 402 and extends between the two shoulder poles 100 .

[0045] Among them, such as Figure 1 and Figure 4 As shown, the slots on both sides of the through slot 401 are used to insert the T-shaped support block 410. The width of the support block 410 is the spacing between the two shoulder poles 100. Its function is to limit the inward deformation and bending of the shoulder pole 100. A protrusion is provided at the lower end of the T-shaped support block 410 to limit the upper and lower positions of the support block 410 and prevent the support block 410 from falling off the sliding trolley 400. Specifically, the above-mentioned slot width is a variable cross-section to meet the lifting requirements of various types of steel bars 10.

[0046] Preferably, one end of the steel bar 10 to be hoisted passing through the through slot 401 is provided with a thread, and the socket 11 is threadedly connected to the end of the steel bar 10 to be hoisted having the thread.

[0047] As shown in the figure, the end of the steel bar 10 to be hoisted is threaded, so that the upper thread is set on the steel bar 10 to be hoisted. One end of the steel bar 10 to be vertically hoisted is passed from the bottom through the slot on the sliding trolley 400. After passing through, the socket 11 is screwed on the end of the steel bar 10. The socket 11 is a hexagonal sleeve with a threaded hole inside.

[0048] Preferably, a guide rail 500 is fixedly connected to the shoulder pole 100, and the guide rail 500 is spaced apart from the shoulder pole 100. An electric slider 600 is slidably connected to the bottom side of the guide rail 500, and an electromagnet 700 magnetically connected to the socket 11 is fixedly installed on the bottom side of the electric slider 600.

[0049] Among them, such as Figure 5As shown, the sliding trolley 400 is adjusted to a state where it can move laterally, the electromagnet 700 is powered on, and the electromagnet 700 on the electric slider 600 is magnetically connected to the socket 11 on the steel bar 10. Then, the electric slider 600 is controlled to slide on the guide rail 500, driving the steel bar 10 magnetically connected to the electromagnet 700 to move, so as to adjust the position of the steel bar 10. There is no need to manually adjust the position of the steel bar 10 between the two shoulder poles 100; it is more convenient to adjust the position of the steel bar 10; the above-mentioned guide rail 500 and the electric slider 600 can be combined with the flange-type slider precision linear slide rail or the electric slide module in the existing technology.

[0050] Preferably, the guide rail 500 is detachably connected to the shoulder pole 100 .

[0051] Among them, such as Figure 5 As shown, the guide rail 500 is connected to the two shoulder poles 100 at the same time through a connecting plate 510. The connecting plate 510 is L-shaped, with one side welded to the guide rail 500 and the other side detachably connected to the shoulder pole 100 through a bolt structure.

[0052] Compared with the prior art, the solution of the present invention is of assembly type, with a simple and easy assembly structure, strong structural displacement restriction, simple and easy replacement of parts, and reliable safety performance; when the types of steel bars 10 are basically the same in the same project, the hoist can be assembled once and can be used for a long time, with strong reusability; by increasing or decreasing the number of trolleys, the on-site steel bar 10 lifting needs can be met; the sliding trolley 400 of this solution can move along the shoulder pole 100, and the lifting spacing of the steel bars 10 can be adjusted, which is convenient for the overall positioning of the steel bars 10; this solution can position and lift multiple steel bars 10 at the same time, and compared with traditional lifting methods, it has high work efficiency, low risk and easy control; this solution solves the safety and efficiency problems of vertical lifting of large-size steel bars 10 of regular bridge piers such as rectangles and ellipses, making it adjustable, detachable and simplified to improve the safety and installation efficiency of vertical lifting of large-size steel bars 10.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lifting device for efficiently lifting large vertical steel bars, characterized by: The lifting device comprises two shoulder poles arranged at intervals and detachably connected together, with a plurality of sliding trolleys slidably connected to the two shoulder poles; the gap between the two shoulder poles is for the steel bars to pass through, and the sliding trolley is provided with a through slot for one end of the steel bar to pass through, and the end of the steel bar passing through the through slot is detachably connected to a socket piece for preventing the steel bar from falling; the shoulder poles are provided with a lifting mechanism; The bottom sides of both ends of the two shoulder poles are fixedly connected with a limiting groove, and the lifting mechanism is a T-shaped hook, the bottom of the hook is embedded in the limiting groove, and the end connecting piece limits one side of the hook to prevent the hook from sliding out of the ends of the two shoulder poles; The T-shaped hook is inverted, with the horizontal plate on the hook embedded in the restriction groove and the vertical plate passing through the gap between the two shoulder poles. The vertical plate passes through the end of the shoulder pole and has a lifting hole. The restriction groove is L-shaped, restricting the bottom and one side of the hook, and the end connector restricts the other side of the hook. Both sides of the through groove on the sliding trolley are provided with movable grooves, and a support block extending between the two shoulder poles is movably installed in the movable groove.

2. A lifting device for efficiently lifting large vertical steel bars according to claim 1, characterized in that: A groove is formed on one side of the two shoulder poles facing away from each other.

3. A lifting device for efficiently lifting large vertical steel bars as claimed in claim 2, characterized in that: The two ends of the shoulder poles are detachably connected together through end connectors.

4. The lifting device for efficiently lifting large vertical steel bars according to claim 1, characterized in that: The two sides of the sliding trolley are slidably connected in the slots of the two shoulder poles.

5. The lifting device for efficiently lifting large vertical steel bars according to claim 4, characterized in that: Both sides of the sliding trolley are threadedly connected with limiting bolts extending into the slots.

6. The lifting device for efficiently lifting large vertical steel bars according to claim 1, characterized in that: One end of the steel bar to be hoisted passing through the through slot is provided with a thread, and the sleeve is threadably connected to the end portion of the steel bar to be hoisted having the thread.

7. The lifting device for efficiently lifting large vertical steel bars according to claim 1, characterized in that: A guide rail is fixedly connected to the shoulder pole, and the guide rail is spaced apart from the shoulder pole. An electric slider is slidably connected to the bottom side of the guide rail, and an electromagnet magnetically connected to the socket is fixedly installed on the bottom side of the electric slider.

8. The lifting device for efficiently lifting large vertical steel bars according to claim 7, characterized in that: The guide rail is detachably connected to the shoulder pole.

Images