Lifting device for boiler maintenance

Abstract

The utility model relates to the technical field of lifting devices, in particular to a lifting device for boiler maintenance, which comprises a lifting arm, a hoisting component and a boiler, the lifting assembly comprises a disc, a rotary disc is arranged on the upper side of the disc, a first lifting ring is fixedly connected to the rotary disc, a steel wire rope is fixedly connected to the bottom of the disc, a ball seat is arranged at the bottom end of the steel wire rope, and a lifting hook is arranged on the lower side of the ball seat. And a ball groove is formed in the ball seat. According to the utility model, through the arrangement of the hoisting assembly, the torsional force is prevented from being transmitted to the hoisting rope through the rotational degree of freedom of the turntable and the disc, the protection effect on the hoisting rope is improved, the torsional stress on the steel wire rope on the lower side of the disc can be removed through the rotational degree of freedom between the hoisting hook and the ball seat, and the protection effect on the steel wire rope is achieved; and therefore, the risks of wire cutting and wire breaking can be avoided in the hoisting process, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a lifting device for boiler maintenance. Background Art

[0002] A boiler is an energy conversion device used to convert chemical energy or electrical energy in fuel into steam, high-temperature water or organic heat carrier with a certain amount of thermal energy.

[0003] Boilers are large in size and require lifting equipment for daily maintenance. The existing lifting equipment used for boilers is generally a large-tonnage truck crane for lifting. This type of lifting equipment is a crane arm cantilever lifting method, and the rotation amplitude caused by the self-rotation and entanglement of the lifting rope during the lifting process is too large. In addition, a large torsional shear force will be generated inside the lifting rope, which is easy to reduce the strength of the lifting rope. As a result, the risk factor is relatively high during lifting and hoisting during maintenance. In order to solve the above problems, we proposed a lifting device for boiler maintenance. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a lifting device for boiler maintenance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lifting device for boiler maintenance, comprising a lifting arm, a lifting assembly and a boiler; the lifting assembly comprises a disc, a turntable is arranged on the upper side of the disc, a first lifting ring is fixedly connected to the turntable, a steel wire rope is fixedly connected to the bottom of the disc, a ball seat is arranged at the bottom end of the steel wire rope, a hook is arranged at the lower side of the ball seat, a rotating groove is provided on the inner side of the disc, a rotating seat is rotatably installed inside the rotating groove, the upper side of the rotating seat is fixedly connected to the bottom of the turntable, a ball groove is provided inside the ball seat, a steering ball knot is fixedly connected to the upper end of the hook, and the steering ball knot is rotatably installed inside the ball groove.

[0007] Preferably, a lifting lug is fixedly mounted on the end of the boom, and a lifting rope is connected to the bottom of the lifting lug.

[0008] Preferably, a crane hook is fixedly connected to the bottom of the lifting rope, and the crane hook is inserted into the inner side of the first lifting ring.

[0009] Preferably, an earring is fixedly connected to the outer wall of the boiler, and through holes are evenly distributed on the earring.

[0010] Preferably, four steel wire ropes are evenly distributed along the circumference of the bottom of the disc.

[0011] Preferably, a second lifting ring is fixedly connected to the upper side of the ball seat, and the bottom end of the wire rope is fixedly connected to the second lifting ring.

[0012] Preferably, a plurality of balls are evenly mounted on the inner side wall of the ball groove, and a sealing rubber ring is provided at the bottom port of the ball groove.

[0013] Preferably, a slide groove is provided at the end of the hook, a slide limit block is slidably installed inside the slide groove, and a compression spring is fixedly connected between the inner side of the slide limit block and the bottom of the slide groove.

[0014] Compared with the related art, the lifting device for boiler maintenance proposed in the utility model has the following advantages:

[0015] Beneficial effects:

[0016] In the utility model, a lifting device for boiler maintenance is described, through a lifting assembly provided, in which a turntable is rotatably provided on a disc in the lifting assembly, and a first lifting ring provided on the upper side of the turntable can be hung on the crane hook, and then during the lifting process, if the boiler below the disc rotates, the disc can adaptively rotate to avoid the torsional force being transmitted to the lifting rope, thereby avoiding the shear damage of the shear stress caused by the torsion, improving the protection of the lifting rope, and making the lifting rope maintain good tensile strength during the lifting process, thereby improving the safety during the lifting process. In addition, the hook is connected to the lower side of the ball seat through the steering ball knot at the upper end, and then the hook has the ability of adaptive angle steering adjustment, and then during the lifting process, the hook can also remove the torsional stress on the wire rope on the lower side of the disc through the adaptive rotation adjustment ability, thereby protecting the wire rope, preventing the risk of tangent and breakage during the lifting process, and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a lifting device for boiler maintenance proposed by the utility model;

[0018] Figure 2 This is a partial three-dimensional structural schematic diagram of a lifting device for boiler maintenance proposed by the utility model;

[0019] Figure 3 A schematic diagram of the partial three-dimensional structure of a lifting device for boiler maintenance proposed in the utility model Figure 1 ;

[0020] Figure 4 A schematic diagram of the partial three-dimensional structure of a boiler maintenance lifting device proposed in the utility model Figure 2 ;

[0021] Figure 5 A schematic diagram of the partial three-dimensional structure of a boiler maintenance lifting device proposed in the utility model Figure 3 ;

[0022] Figure 6 The utility model is a partial three-dimensional structural cutaway diagram of a lifting device for boiler maintenance proposed by the utility model.

[0023] In the figure: 1. crane arm; 2. lifting eye; 3. lifting rope; 4. lifting assembly; 41. disc; 42. turntable; 43. first lifting ring; 44. wire rope; 45. ball seat; 46. hook; 47. swivel groove; 48. swivel seat; 49. second lifting ring; 410. ball groove; 411. sealing rubber ring; 412. steering ball knot; 413. sliding limit block; 5. boiler; 51. earring; 52. through hole. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Reference Figure 1-6 , please refer to Figure 1-Figure 6 ,in, Figure 1 This is a three-dimensional structural schematic diagram of a lifting device for boiler maintenance proposed by the utility model; Figure 2 This is a partial three-dimensional structural schematic diagram of a lifting device for boiler maintenance proposed by the utility model; Figure 3 A schematic diagram of the partial three-dimensional structure of a boiler maintenance lifting device proposed in the utility model Figure 1 ; Figure 4 A schematic diagram of the partial three-dimensional structure of a boiler maintenance lifting device proposed in the utility model Figure 2 ; Figure 5 A schematic diagram of the partial three-dimensional structure of a boiler maintenance lifting device proposed in the utility model Figure 3 ; Figure 6 The utility model provides a partial three-dimensional structural cutaway diagram of a lifting device for boiler maintenance. A lifting device for boiler maintenance comprises: a lifting arm 1, a lifting assembly 4 and a boiler 5; the lifting assembly 4 comprises a disc 41, a turntable 42 is arranged on the upper side of the disc 41, a first lifting ring 43 is fixedly connected to the turntable 42, a steel wire rope 44 is fixedly connected to the bottom of the disc 41, a ball seat 45 is arranged at the bottom end of the steel wire rope 44, a hook 46 is arranged at the lower side of the ball seat 45, a rotating groove 47 is provided on the inner side of the disc 41, a rotating seat 48 is rotatably installed inside the rotating groove 47, the upper side of the rotating seat 48 is fixedly connected to the bottom of the turntable 42, a ball groove 410 is provided inside the ball seat 45, a steering ball knot 412 is fixedly connected to the upper end of the hook 46, the steering ball knot 412 is rotatably installed inside the ball groove 410, a second lifting ring 49 is fixedly connected to the upper side of the ball seat 45, and the lower end of the steel wire rope 44 is fixedly connected to the second lifting ring 49.

[0026] By the arrangement in the above manner, when the first lifting ring 43 is hung on the crane hook, when the boiler 5 hoisted on the lower side of the disc 41 rotates during the hoisting process, the disc 41 is driven to rotate synchronously. When the disc 41 rotates, since the inner side of the disc 41 is in a rotational connection with the swivel seat 48, the torsional effect is rarely transmitted to the swivel seat 48, and the turntable 42 and the first lifting ring 43 on the upper side of the swivel seat 48 are not driven to rotate synchronously. At the same time, the friction between the rotating groove 47 and the swivel seat 48 causes a small angle rotation, which has little effect on the whole. Therefore, the rotation of the lower side of the disc 41 will not drive the first lifting ring 43 and the crane hook to rotate synchronously, thereby avoiding shear damage caused by torsion, playing a high protective role on the crane's lifting rope, reducing the risk of rope cutting during hoisting, and improving safety in use.

[0027] In this method, a lifting ear 2 is fixedly installed at the end of the lifting arm 1, a lifting rope 3 is connected to the bottom of the lifting ear 2, a crane hook is fixedly connected to the bottom of the lifting rope 3, and the crane hook is inserted into the inner side of the first lifting ring 43. It should be noted here that an anti-unhooking component is provided on the crane hook to prevent the crane hook from slipping off from the inner side of the first lifting ring 43. The anti-unhooking component is a conventional technical means in existing lifting equipment and will not be repeated here.

[0028] In this embodiment, an earring 51 is fixedly connected to the outer wall of the boiler 5 , and through holes 52 are evenly distributed on the earring 51 .

[0029] Through the arrangement in the above manner, the through hole 52 is a hoisting connection point during the maintenance of the boiler 5.

[0030] In this embodiment, four steel wire ropes 44 are evenly distributed along the circumference of the bottom of the disk 41 .

[0031] By the arrangement in the above manner, four steel wire ropes 44 are evenly distributed along the circumference of the bottom of the disc 41, so that the boiler 5 at the bottom is more stable during the hoisting process, the hoisting shaking is reduced, and the safety is improved.

[0032] In this embodiment, a plurality of balls are evenly installed on the inner wall of the ball groove 410 , and a sealing rubber ring 411 is provided at the bottom port of the ball groove 410 .

[0033] Through the above-mentioned arrangement, the arrangement of several balls reduces the friction loss between the steering ball joint 412 and the ball groove 410. In addition, the sealing rubber ring 411 arranged at the bottom port of the ball groove 410 protects the transmission space of the internal components of the ball groove 410 to prevent the balls from rusting.

[0034] In this embodiment, a slide groove is provided at the end of the hook 46, a slide limit block 413 is slidably installed inside the slide groove, and a compression spring is fixedly connected between the inner side of the slide limit block 413 and the bottom of the slide groove.

[0035] Through the above-mentioned arrangement, the outer end of the sliding limit block 413 slides out of the slide groove due to the rebound force of the compression spring. With this arrangement, the hook 46 has an anti-unhooking limit function, further enhancing the safety of use.

[0036] The working principle of a lifting device for boiler maintenance provided by the utility model is as follows:

[0037] When in use, first hang the hook 46 on the lifting point of the boiler 5, push the sliding limit block 413 at the end of the hook 46 to the inside of the slide groove inside the hook 46, and then hang the hook 46 on the through hole 52. Subsequently, under the action of the rebound force of the compression spring, the outer end of the sliding limit block 413 slides out of the slide groove, completing the limiting effect of the hook 46 on the inside of the through hole 52. After the four hooks 46 are installed respectively, the crane hook is hung on the first lifting ring 43, and the crane is started. After the lifting arm 1 is moved, the boiler 5 can be lifted and hoisted. During the lifting process, the rotational freedom of the turntable 42 and the disc 41 can prevent the torsional force from being transmitted to the lifting rope 3, thereby improving the protection of the lifting rope 3. The rotational freedom between the hook 46 and the ball seat 45 can remove the torsional stress on the wire rope 44 on the lower side of the disc 41, thereby protecting the wire rope 44, thereby avoiding the risk of tangent and breakage during the lifting process, thereby improving the safety of use.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lifting device for boiler maintenance, characterized in that: It comprises a lifting arm (1), a lifting assembly (4) and a boiler (5); The lifting assembly (4) comprises a disc (41), a turntable (42) is arranged on the upper side of the disc (41), a first lifting ring (43) is fixedly connected to the turntable (42), a steel wire rope (44) is fixedly connected to the bottom of the disc (41), a ball seat (45) is arranged at the bottom end of the steel wire rope (44), a lifting hook (46) is arranged at the lower side of the ball seat (45), a rotating groove (47) is provided on the inner side of the disc (41), a rotating seat (48) is rotatably installed on the inner side of the rotating groove (47), the upper side of the rotating seat (48) is fixedly connected to the bottom of the turntable (42), a ball groove (410) is provided inside the ball seat (45), a steering ball knot (412) is fixedly connected to the upper end of the lifting hook (46), and the steering ball knot (412) is rotatably installed on the inner side of the ball groove (410).

2. A lifting device for boiler maintenance according to claim 1, characterized in that: A lifting lug (2) is fixedly mounted on the end of the lifting arm (1), and a lifting rope (3) is connected to the bottom of the lifting lug (2).

3. A lifting device for boiler maintenance according to claim 2, characterized in that: The bottom of the lifting rope (3) is fixedly connected to a crane hook, and the crane hook is inserted into the inner side of the first lifting ring (43).

4. A lifting device for boiler maintenance according to claim 1, characterized in that: An earring (51) is fixedly connected to the outer wall of the boiler (5), and through holes (52) are evenly distributed on the earring (51).

5. A lifting device for boiler maintenance according to claim 1, characterized in that: Four steel wire ropes (44) are evenly distributed along the circumference of the bottom of the disc (41).

6. A lifting device for boiler maintenance according to claim 1, characterized in that: A second lifting ring (49) is fixedly connected to the upper side of the ball seat (45), and the bottom end of the steel wire rope (44) is fixedly connected to the second lifting ring (49).

7. A lifting device for boiler maintenance according to claim 1, characterized in that: A plurality of rolling balls are evenly mounted on the inner side wall of the ball groove (410), and a sealing rubber ring (411) is arranged at the bottom port of the ball groove (410).

8. A lifting device for boiler maintenance according to claim 1, characterized in that: A sliding groove is provided at the end of the hook (46), a sliding limit block (413) is slidably installed inside the sliding groove, and a compression spring is fixedly connected between the inner side of the sliding limit block (413) and the bottom of the sliding groove.

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