Special lifting appliance device for long coupler

Abstract

The invention relates to the technical field of lifting appliances, in particular to a special lifting appliance device for a long coupler, a lifting appliance main body and a long coupler body, the lifting appliance main body comprises a lifting ring, a lifting rope and U-shaped calipers, a storage mechanism is arranged between the lifting rope and the lifting ring, one end, away from the lifting ring, of the lifting rope is connected with the U-shaped calipers, the lifting ring is a circular high-strength steel ring, and the lifting ring is connected with the U-shaped calipers. The U-shaped calipers are formed by bending a steel plate, the opening width is slightly smaller than the inner diameter of a long coupling sleeve, and the opening height is larger than the depth of the sleeve; the two U-shaped calipers are clamped into pipe openings in the two ends of the long coupler body respectively, then an external traveling crane hook hooks the lifting ring for lifting, the lifting ropes pull the U-shaped calipers under tension, the U-shaped calipers are tightly clamped on the inner wall of the sleeve and prevented from slipping, the lifting ring is located between the two lifting ropes, it is guaranteed that the lifting gravity center coincides with the gravity center of the long coupler body, and the gravity center is prevented from shifting; and the lifting appliance does not need to be bound by a steel wire rope, and is simple and convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, and in particular to a lifting device specifically designed for long couplings. Background Technology

[0002] Couplings, also known as couplings or back-to-back wheels, are devices used in mechanical engineering to connect two shafts or a shaft to a rotating component and transmit motion and torque. They provide functions such as misalignment compensation, damping, vibration reduction, and overload protection. Their structure typically consists of two halves connected by a key or tight fit between the shaft ends. They are suitable for connecting gears, pulleys, and other parts. Couplings are broadly classified into rigid couplings and flexible couplings. Rigid couplings require strict alignment and include flange couplings and sleeve couplings. Flexible couplings are further divided into those without elastic elements (such as sliding block couplings and universal couplings) and those with elastic elements (such as flexible pin couplings and swivel couplings). The former can compensate for displacement, while the latter also provides damping performance.

[0003] Currently, when transferring long couplings, it is usually necessary to use the hook of a workshop overhead crane (bridge crane) to lift them. However, the common method for lifting long couplings in existing technology is to wrap the long coupling with steel wire rope in multiple loops and then connect the crane hook to the steel wire rope to carry out the lifting. This traditional lifting method has many drawbacks;

[0004] For example, the process of binding wire ropes is extremely cumbersome, requiring operators to wrap and knot the long coupling multiple times. This is not only labor-intensive but also time-consuming, seriously affecting work efficiency. Secondly, because the surface of the long coupling is smooth and mostly cylindrical, relying solely on the friction of the wire rope for binding makes it prone to relative slippage during lifting or transport. This can cause the wire rope to slip off from the end or middle of the coupling, posing a risk of the suspended object falling. This not only makes the coupling inconvenient to use but also poses a significant safety hazard.

[0005] Therefore, the present invention provides a special lifting device for long couplings. Summary of the Invention

[0006] The purpose of this invention is to solve at least one technical problem mentioned in the background art.

[0007] This invention provides a special lifting device for long couplings, comprising: a lifting device body and a long coupling body;

[0008] The lifting device includes a lifting ring, a lifting rope, and a U-shaped clamp. A storage mechanism is provided between the lifting rope and the lifting ring, and the end of the lifting rope away from the lifting ring is connected to the U-shaped clamp.

[0009] By adopting the above technical solution, and by setting up two sets of lifting ropes and U-shaped clamps, the two U-shaped clamps can be respectively clamped into the pipe openings at both ends of the long coupling body. Then, the external crane hook hooks onto the lifting ring for lifting. The lifting ropes are pulled by tension to make the U-shaped clamps tightly clamp onto the inner wall of the sleeve to prevent slippage. The lifting ring is located in the middle of the two lifting ropes to ensure that the lifting center of gravity coincides with the center of gravity of the long coupling body, avoiding the center of gravity shift, thereby achieving a stable lifting effect.

[0010] Preferably, the lifting ring is a circular high-strength steel ring, the lifting rope is a wear-resistant alloy steel chain, the U-shaped caliper is formed by bending a steel plate, the opening width is slightly smaller than the inner diameter of the long coupling sleeve, the opening height is greater than the sleeve depth, and a handle is fixedly connected to the surface of the U-shaped caliper.

[0011] By adopting the above technical solution and by setting the handle, the insertion and connection of the U-shaped caliper and the sleeve are facilitated.

[0012] Preferably, the U-shaped caliper has an assembly groove on the inner wall of its opening, and a protective pad is installed inside the opening of the U-shaped caliper through the assembly groove. The protective pad is made of wear-resistant rubber material, which has a certain elasticity and can increase friction when clamping.

[0013] By adopting the above technical solution and setting the protective pad, the long coupling body can be protected during hoisting, preventing the U-shaped calipers from causing wear on the surface of the long coupling body.

[0014] Preferably, the lower surface of the U-shaped caliper is provided with a mounting groove, and the side of the U-shaped caliper is provided with a rotating opening that extends into the mounting groove. A threaded rod is rotatably connected to the inner wall of the rotating opening, and a threaded cylinder is threadedly connected to one end of the threaded rod located inside the mounting groove.

[0015] By adopting the above technical solution, the insertion length of the U-shaped clamp can be adjusted as needed through the setting of the threaded rod and threaded cylinder, making it more stable when lifting long straight pipes and improving its adaptability.

[0016] Preferably, the threaded cylinder is provided with guide sliders on both the front and back sides, and the inner front wall and inner rear wall of the mounting groove are provided with guide grooves for the guide sliders to slide.

[0017] By adopting the above technical solution, the threaded cylinder can move in a specific direction by rotating the threaded rod under the guidance of the guide slider.

[0018] Preferably, the storage mechanism includes a storage box slidably connected to a hanging ring via a connecting ring, a rope winding roller rotatably connected inside the storage box, a transmission opening penetrating through the surface of the storage box, a rocker for rotating the rope winding roller rotatably connected to the inner wall of the transmission opening, two symmetrical baffles fixedly installed on the surface of the rope winding roller, and one end of the hanging rope being wound around the surface of the rope winding roller and fixedly connected to the surface of one of the two baffles.

[0019] By adopting the above technical solution, and with the setting of storage box and rope winding roller, the lifting rope can be wound and stored when the lifting device is not in use, so as to avoid the lifting rope from getting tangled together during the transportation and storage of the lifting device, and to provide convenience for subsequent use.

[0020] Preferably, the surface of the rocker is provided with a threaded hole, and the inner wall of the threaded hole is threaded with a fixing bolt. The side of the storage box is provided with a number of insertion holes corresponding to the positions of the fixing bolts. The insertion holes are arranged in a circular array on the side of the storage box.

[0021] By adopting the above technical solution, once the hoisting rope is released to the required length, tightening the fixing bolts and inserting the end into the corresponding hole will lock the chuck and rope winding roller, preventing them from rotating accidentally during hoisting and ensuring operational safety.

[0022] Preferably, the lower surface of the storage box has a rope opening, and the inner wall of the rope opening is provided with a guide slide rod and a reciprocating screw. The two ends of the guide slide rod are fixedly connected to the inner walls of the rope opening on both sides, and the two ends of the reciprocating screw are rotatably connected to the inner walls of the rope opening on both sides. The surface of the reciprocating screw is provided with a threaded block, and the surface of the guide slide rod is slidably connected with a guide slider. A guide ring is fixedly connected between the threaded block and the guide slider. The end of the rope away from the winding roller passes through the guide ring and is fixedly connected to the U-shaped clamp.

[0023] By adopting the above technical solution, through the setting of reciprocating screw, guide slide rod and guide ring, under the guidance of the guide slide rod and guide block, the threaded block can drive the guide ring to move left and right in a directional direction through the rotation of the reciprocating screw. Through the guidance of the guide ring, the lifting rope can be evenly wound on the surface of the rope winding roller, avoiding the situation of knotting due to concentrated winding of the lifting rope.

[0024] Preferably, both the winding roller and the reciprocating screw are fixedly mounted with synchronous pulleys, and synchronous belts are sleeved on the surfaces of the two synchronous pulleys. The winding roller is connected to the reciprocating screw via the synchronous belts.

[0025] By adopting the above technical solution, and through the setting of synchronous pulleys and synchronous belts, the reciprocating screw can be driven to rotate synchronously through the synchronous belt when the rocker and the rope roller are rotating, thus achieving the effect of transmission.

[0026] Preferably, the guide ring has an arc-shaped chamfer at the opening and is made of high-strength steel.

[0027] By adopting the above technical solution and setting the arc chamfer, the friction between the lifting rope and the guide ring opening can be reduced.

[0028] In summary, the present invention has at least one of the following beneficial technical effects:

[0029] 1. The present invention provides a special lifting device for long couplings, in which two U-shaped clamps are respectively inserted into the pipe openings at both ends of the long coupling body. Then, an external crane hook hooks onto the lifting ring for lifting. The lifting rope is pulled by tension to make the U-shaped clamps tightly clamp the inner wall of the sleeve to prevent slippage. The lifting ring is located between the two lifting ropes to ensure that the lifting center of gravity coincides with the center of gravity of the long coupling body, avoiding center of gravity shift, thereby achieving a stable lifting effect. Moreover, this lifting device does not require wire rope binding and is easy to operate.

[0030] 2. The long coupling special lifting device of the present invention, through the setting of threaded rod and threaded cylinder, allows the threaded cylinder to move in a direction under the guidance of the guide slider when the threaded rod is rotated. The insertion length of the U-shaped caliper can be adjusted as needed, making it more stable when lifting long straight pipes and improving its adaptability. The protective pad can protect the long coupling body when lifting it, preventing the U-shaped caliper from wearing the surface of the long coupling body, and at the same time increasing the resistance and improving the friction.

[0031] 3. The special lifting device for long couplings described in this invention allows for the following operation when the lifting device is not in use: rotating the rocker to drive the rope winding roller to rotate and wind the lifting rope. During this operation, the rotation of the rope winding roller drives the reciprocating screw to rotate via the synchronous belt. Under the guidance of the guide slide and the guide block, the threaded block can drive the guide ring to move left and right through the rotation of the reciprocating screw. Through the guidance of the guide ring, the lifting rope can be wound evenly and smoothly layer by layer on the surface of the rope winding roller, avoiding knotting caused by concentrated winding. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the U-shaped caliper according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the U-shaped caliper structure in an embodiment of the present invention;

[0035] Figure 4 This is a schematic cross-sectional view of the storage box according to an embodiment of the present invention;

[0036] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged structural diagram at point A in the middle;

[0037] Figure 6 This is a schematic diagram of the storage box structure from below according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Lifting gear body; 101. Lifting ring; 102. Lifting rope; 103. U-shaped clamp;

[0040] 2. Long coupling body;

[0041] 3. Storage mechanism; 301. Storage box; 302. Rope winding roller; 303. Shaking plate; 304. Baffle; 305. Fixing bolt; 306. Guide slide rod; 307. Reciprocating screw; 308. Guide ring; 309. Synchronous belt;

[0042] 4. Handle; 5. Protective pad; 6. Threaded rod; 7. Threaded cylinder; 8. Guide slider. Detailed Implementation

[0043] The following combination Figures 1 to 6 The present invention will be further described in detail below.

[0044] Example 1

[0045] Please refer to the following carefully. Figure 1 A special lifting device for long couplings includes: a lifting body 1 and a long coupling body 2. The lifting body 1 includes a lifting ring 101, a lifting rope 102 and a U-shaped clamp 103. A storage mechanism 3 is provided between the lifting rope 102 and the lifting ring 101. The end of the lifting rope 102 away from the lifting ring 101 is connected to the U-shaped clamp 103.

[0046] Specifically, by setting up two sets of lifting ropes 102 and U-shaped clamps 103, the two U-shaped clamps 103 can be respectively clamped into the pipe openings at both ends of the long coupling body 2. Then, the external crane hook hooks onto the lifting ring 101 to lift it. The lifting ropes 102 are pulled by the tension to pull the U-shaped clamps 103, so that they are tightly clamped into the inner wall of the sleeve to prevent slippage.

[0047] Please refer to this carefully. Figure 1 , Figure 2 The lifting ring 101 is a circular high-strength steel ring, the lifting rope 102 is made of wear-resistant alloy steel chain, and the U-shaped caliper 103 is formed by bending steel plate. The opening width is slightly smaller than the inner diameter of the long coupling sleeve, and the opening height is greater than the sleeve depth. The surface of the U-shaped caliper 103 is fixedly connected with a handle 4.

[0048] Specifically, the handle 4 facilitates the insertion of the U-shaped caliper 103 into the sleeve.

[0049] Please refer to this carefully. Figure 1 , Figure 2 The U-shaped caliper 103 has an assembly groove on the inner wall of its opening. A protective pad 5 is installed inside the opening of the U-shaped caliper 103 through the assembly groove. The protective pad 5 is made of wear-resistant rubber material, which has a certain elasticity and can increase friction when clamping.

[0050] Specifically, the protective pad 5 can protect the long coupling body 2 during hoisting, preventing the U-shaped caliper 103 from causing wear on the surface of the long coupling body 2.

[0051] Please refer to this carefully. Figure 2 , Figure 3 The lower surface of the U-shaped caliper 103 is provided with an installation groove, and the side of the U-shaped caliper 103 is provided with a rotating opening that extends into the installation groove. The inner wall of the rotating opening is rotatably connected to a threaded rod 6, and the end surface of the threaded rod 6 located inside the installation groove is threadedly connected to a threaded cylinder 7.

[0052] Specifically, by setting the threaded rod 6 and the threaded cylinder 7, the insertion length of the U-shaped clamp 103 can be adjusted as needed, making it more stable when hoisting long straight pipe fittings and improving its adaptability.

[0053] Please refer to this carefully. Figure 3 The threaded cylinder 7 is provided with guide sliders 8 on both the front and back sides, and the inner front wall and inner rear wall of the mounting groove are provided with guide grooves for the guide sliders 8 to slide.

[0054] Specifically, under the guidance of the guide slider 8, the threaded cylinder 7 can move in a specific direction by rotating the threaded rod 6.

[0055] The working principle of this embodiment is as follows:

[0056] During hoisting operations, the operator first holds handle 4 and aligns and inserts the two U-shaped clamps 103 into the pipe openings (sleeves) at both ends of the long coupling body 2. Depending on the actual depth of the sleeve, the extension length of the threaded sleeve 7 can be adjusted by turning the threaded rod 6 until the U-shaped clamps 103 are firmly attached to the inner wall of the sleeve. Then, the hook of the external crane is hooked onto the lifting ring 101 and slowly lifted. At this time, the lifting rope 102 is taut, and the resulting tension causes the contact pressure between the U-shaped clamps 103 and the inner wall of the sleeve to increase sharply, forming a self-locking state to ensure that it will not slip. Since the lifting ring 101 is located in the middle of the two lifting ropes 102, it can ensure that the center of gravity of the entire lifting system is basically coincident with the center of gravity of the long coupling body 2 in the vertical direction, avoiding the center of gravity shift, thereby achieving a stable hoisting effect. Moreover, this lifting device does not require wire rope binding, is easy to operate, and greatly improves work efficiency.

[0057] Example 2

[0058] Compared with Embodiment 1, another embodiment of the present invention is as follows:

[0059] Please refer to this carefully. Figure 4 , Figure 5 The storage mechanism 3 includes a storage box 301 that is slidably connected to a hanging ring 101 via a connecting ring. A rope winding roller 302 is rotatably connected inside the storage box 301. A transmission opening is provided through the surface of the storage box 301. A rocker plate 303 for rotating the rope winding roller 302 is rotatably connected to the inner wall of the transmission opening. Two symmetrical baffles 304 are fixedly installed on the surface of the rope winding roller 302. One end of the hanging rope 102 is wound around the surface of the rope winding roller 302 and fixedly connected to the surface of one of the two baffles 304.

[0060] Specifically, by setting up the storage box 301 and the rope winding roller 302, the lifting rope 102 can be wound and stored when the lifting device is not in use, so as to avoid the lifting rope 102 from getting tangled together during the transportation and storage of the lifting device, thus providing convenience for subsequent use.

[0061] Please refer to this carefully. Figure 4 , Figure 5 The surface of the rocker plate 303 is provided with a threaded hole, and the inner wall of the threaded hole is connected with a fixing bolt 305. The side of the storage box 301 is provided with a number of insertion holes corresponding to the positions of the fixing bolts 305. The insertion holes are arranged in a circular array on the side of the storage box 301.

[0062] Specifically, by setting the fixing bolt 305 and the insertion hole, when the hoisting rope 102 is released to the required length, tightening the fixing bolt 305 will insert its end into the corresponding insertion hole, thereby locking the rocker plate 303 and the rope winding roller 302, preventing them from rotating accidentally during hoisting and ensuring operational safety.

[0063] Please refer to this carefully. Figure 4 , Figure 5 , Figure 6 The storage box 301 has a rope opening on its lower surface. The inner wall of the rope opening is provided with a guide slide rod 306 and a reciprocating screw 307. The two ends of the guide slide rod 306 are fixedly connected to the inner walls of the rope opening on both sides. The two ends of the reciprocating screw 307 are rotatably connected to the inner walls of the rope opening on both sides. The surface of the reciprocating screw 307 is provided with a threaded block. The surface of the guide slide rod 306 is slidably connected with a guide block. A guide ring 308 is fixedly connected between the threaded block and the guide block. The end of the hanging rope 102 away from the rope winding roller 302 passes through the guide ring 308 and is fixedly connected to the U-shaped clamp 103.

[0064] Specifically, through the arrangement of the reciprocating screw 307, guide slide 306, and guide ring 308, under the guidance of the guide slide 306 and guide block, the threaded block can drive the guide ring 308 to move left and right in a directional direction through the rotation of the reciprocating screw 307. Through the guidance of the guide ring 308, the lifting rope 102 can be evenly wound on the surface of the rope winding roller 302, avoiding the situation of knotting of the lifting rope 102 due to concentrated winding.

[0065] Please refer to this carefully. Figure 5 , Figure 6 Both the rope winding roller 302 and the reciprocating screw 307 are fixedly mounted with synchronous pulleys, and the surfaces of the two synchronous pulleys are fitted with synchronous belts 309. The rope winding roller 302 is connected to the reciprocating screw 307 through the synchronous belts 309.

[0066] Specifically, by setting up the synchronous pulley and the synchronous belt 309, the reciprocating screw 307 can be driven to rotate synchronously through the synchronous belt 309 when the rocker 303 and the rope roller 302 are rotating, thus achieving the effect of transmission.

[0067] Please refer to this carefully. Figure 4 , Figure 5 The guide ring 308 has an arc-shaped chamfer at the opening and is made of high-strength steel.

[0068] Specifically, the chamfered corners reduce friction between the suspension rope 102 and the guide ring 308.

[0069] Working principle:

[0070] When carrying out hoisting operations, the operator first holds the handle 4 and aligns the two U-shaped clamps 103 with and inserts them into the pipe openings (sleeves) at both ends of the long coupling body 2. According to the actual depth of the sleeve, the extension length of the threaded sleeve 7 can be adjusted by turning the threaded rod 6 until the U-shaped clamps 103 are firmly attached to the inner wall of the sleeve. Then, the hook of the external crane is hooked onto the lifting ring 101 and slowly lifted. At this time, the lifting rope 102 is taut, and the resulting tension causes the contact pressure between the U-shaped clamps 103 and the inner wall of the sleeve to increase sharply, forming a self-locking state to ensure that it will not slip. Since the lifting ring 101 is located in the middle of the two lifting ropes 102, it can ensure that the center of gravity of the entire lifting system is basically coincident with the center of gravity of the long coupling body 2 in the vertical direction, avoiding the center of gravity shift, thereby achieving a stable hoisting effect.

[0071] When the lifting device needs to be idle, the rocker 303 is turned to drive the rope winding roller 302 to rotate and wind up the lifting rope 102. During this period, the rotation of the rope winding roller 302 drives the reciprocating screw 307 to rotate through the synchronous belt 309. Under the guidance of the guide slide rod 306 and the guide block, the threaded block can drive the guide ring 308 to move left and right through the rotation of the reciprocating screw 307. Through the guidance of the guide ring 308, the lifting rope 102 can be wound flatly and evenly on the surface of the rope winding roller 302 layer by layer, avoiding the lifting rope 102 from knotting due to concentrated winding.

Claims

1. A special lifting device for long couplings, characterized in that, include: The lifting device body (1) and the long coupling body (2); The lifting device body (1) includes a lifting ring (101), a lifting rope (102) and a U-shaped clamp (103). A storage mechanism (3) is provided between the lifting rope (102) and the lifting ring (101). The end of the lifting rope (102) away from the lifting ring (101) is connected to the U-shaped clamp (103).

2. The special lifting device for long couplings according to claim 1, characterized in that, The lifting ring (101) is a circular high-strength steel ring, the lifting rope (102) is made of wear-resistant alloy steel chain, the U-shaped caliper (103) is formed by bending steel plate, the opening width is slightly smaller than the inner diameter of the long coupling sleeve, the opening height is greater than the sleeve depth, and the surface of the U-shaped caliper (103) is fixedly connected with a handle (4).

3. The special lifting device for long couplings according to claim 2, characterized in that, The U-shaped caliper (103) has an assembly groove on its inner wall. A protective pad (5) is installed inside the opening of the U-shaped caliper (103) through the assembly groove. The protective pad (5) is made of wear-resistant rubber material.

4. The special lifting device for long couplings according to claim 2, characterized in that, The lower surface of the U-shaped caliper (103) is provided with an installation groove, and the side of the U-shaped caliper (103) is provided with a rotating opening that extends through the installation groove. The inner wall of the rotating opening is rotatably connected to a threaded rod (6), and the end surface of the threaded rod (6) located inside the installation groove is threadedly connected to a threaded cylinder (7).

5. A special lifting device for long couplings according to claim 4, characterized in that, The threaded cylinder (7) is provided with guide sliders (8) on both the front and back sides, and the inner front wall and inner rear wall of the mounting groove are provided with guide grooves for the guide sliders (8) to slide.

6. The special lifting device for long couplings according to claim 1, characterized in that, The storage mechanism (3) includes a storage box (301) slidably connected to a hanging ring (101) via a connecting ring. A rope winding roller (302) is rotatably connected inside the storage box (301). A transmission opening is provided through the surface of the storage box (301). A rocker plate (303) for rotating the rope winding roller (302) is rotatably connected to the inner wall of the transmission opening. Two symmetrical baffles (304) are fixedly installed on the surface of the rope winding roller (302). One end of the hanging rope (102) is wound around the surface of the rope winding roller (302) and fixedly connected to the surface of one of the two baffles (304).

7. A special lifting device for long couplings according to claim 6, characterized in that, The surface of the rocker (303) is provided with a threaded hole, and the inner wall of the threaded hole is threaded with a fixing bolt (305). The side of the storage box (301) is provided with a socket corresponding to the position of the fixing bolt (305). There are several sockets, and the several sockets are arranged in a circular array on the side of the storage box (301).

8. A special lifting device for long couplings according to claim 6, characterized in that, The storage box (301) has a rope opening on its lower surface. The inner wall of the rope opening is provided with a guide slide rod (306) and a reciprocating screw (307). The surface of the reciprocating screw (307) is provided with a threaded block. The surface of the guide slide rod (306) is slidably connected with a guide block. A guide ring (308) is fixedly connected between the threaded block and the guide block. The end of the hanging rope (102) away from the rope winding roller (302) passes through the guide ring (308) and is fixedly connected to the U-shaped clamp (103).

9. A special lifting device for long couplings according to claim 8, characterized in that, Both the winding roller (302) and the reciprocating screw (307) are fixedly equipped with synchronous pulleys, and the surfaces of the two synchronous pulleys are fitted with synchronous belts (309). The winding roller (302) is connected to the reciprocating screw (307) through the synchronous belts (309).

10. A special lifting device for long couplings according to claim 8, characterized in that, The guide ring (308) has an arc-shaped chamfer at the opening, and the guide ring (308) is made of high-strength steel.

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