Lifting device for maintenance of thermal power plant

Abstract

The utility model relates to the technical field of thermal power plants, in particular to a hoisting device for thermal power plant maintenance, which comprises a portal frame, two positioning grooves are formed in the portal frame, optical shafts are arranged on the inner walls of the positioning grooves, a lifting platform is arranged on the optical shafts, a C-shaped shell is arranged on the lifting platform, a motor is mounted on the inner wall of the C-shaped shell, and a worm is arranged at the output end of the motor. A worm gear is meshed with the worm, two connecting frames are arranged on the inner wall of the C-shaped shell, the opposite sides of the two connecting frames are rotationally connected with four adjusting rods through shafts, two gears meshed with each other are arranged between the two connecting frames, and the gears are arranged on the outer side wall of the shaft located on the uppermost portion. The mechanical claws are rotationally connected between every four corresponding adjusting rods through two shafts, and every two corresponding adjusting rods are of a parallelogram structure, so that an object can be better fixed, and the object is effectively prevented from falling off in the ascending process.

Description

Technical Field

[0001] The present application relates to the technical field of thermal power plants, and in particular to a lifting device for maintenance of thermal power plants. Background Art

[0002] As we all know, a thermal power plant is a power facility that uses the heat energy released by the combustion of fossil fuels to generate electricity. It includes all equipment, devices, and instrumentation devices for heat release from fuel combustion, thermal energy-electricity conversion, and electrical energy output, as well as buildings, structures, and all ancillary facilities related to production and life set up in specific places for this purpose.

[0003] After searching, the utility model patent with Chinese publication number CN215439329U discloses a lifting device for maintenance of thermal power plants, which includes two symmetrically distributed triangular brackets for support, the bottom surface of the gantry is installed with clamping claws for lifting, the side of the triangular bracket is fixedly connected with a bottom ladder for climbing, the side of the gantry is fixedly connected with a lifting ladder that slides relative to the bottom ladder, and both sides of the gantry are fixedly connected with traction ropes for auxiliary lifting; the bottom surface of the gantry can be used to lift and repair the equipment by cooperating with the clamping claws, and the operator can climb to the top of the gantry through the bottom ladder, so that the operator can repair the large equipment inside the protective fence, and when one of the lifting mechanism and the traction rope has a problem, the other traction mechanism is still provided for support, which provides double insurance for lifting and lifting, and effectively improves the stability of lifting and lifting.

[0004] Although the above technical solution solves the problem of hoisting stability, in the above technical solution, when hoisting objects, although the double lifting mechanism is used to improve the stability of hoisting, the ropes may still break due to the long service life of the ropes, causing the objects to fall and damage the hoisted objects, and the safety protection is not high. In order to solve the above problems, a hoisting device for maintenance of thermal power plants is needed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present application provides a lifting device for maintenance of a thermal power plant to solve the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a lifting device for maintenance of a thermal power plant, comprising a crane disposed on a gantry, a hook disposed on the crane, two positioning grooves disposed on the gantry, an optical axis disposed on the inner wall of the positioning groove, a lifting platform disposed on the optical axis, a one-way moving mechanism disposed on the lifting platform, and a C-shaped housing disposed on the lifting platform, a motor mounted on the inner wall of the C-shaped housing, a worm disposed at the output end of the motor, and a worm gear meshed on the worm;

[0009] Two connecting frames are arranged on the inner wall of the C-shaped shell, and four adjusting rods are rotatably connected to the opposite sides of the two connecting frames through shafts, and two mutually meshing gears are arranged between the two connecting frames, and each gear is respectively arranged on the outer side wall of the shaft located at the top, and mechanical claws are rotatably connected to each of the four corresponding adjusting rods through two shafts, and the corresponding two adjusting rods are in a parallelogram structure, and the worm gear is arranged on one of the shafts located at the top.

[0010] Preferably, the one-way moving mechanism includes two pop-up springs, a plurality of slots are provided on the gantry, a fixing hole and a limiting slot are provided on the lifting platform, one end of the two pop-up springs are installed on the inner wall of the fixing hole, and the other end of the two pop-up springs is provided with a baffle, two connecting rods are provided on one surface of the baffle, one end of the two connecting rods passes through the lifting platform and extends to the inside of the limiting slot, and one end of the two connecting rods is provided with a chamfered block, and the chamfered block is located inside the corresponding slot, so that the chamfered block is more stable during operation.

[0011] Furthermore, there are two mechanical claws, and one end of the inner wall of the two mechanical claws is provided with a grasping groove, and the grasping groove is trapezoidal, which effectively improves the firmness when grasping objects.

[0012] Furthermore, a rectangular notch is provided on the gantry, wheel grooves are provided on both sides of the gantry, the overhead travelling crane is connected to the two wheel grooves, and the overhead travelling crane and the hook are an integrated structure, and a ladder is provided on one side of the gantry to facilitate maintenance by operators.

[0013] In a further solution, a pull rod is provided on the other side of the baffle, one end of the pull rod passes through the lifting platform and extends to the outside, and a handle is provided at one end of the pull rod, the handle is provided with anti-slip grooves, and the pull rod is slidably connected to the lifting platform, so that it is not easy to slip out of the hand when the lifting platform is manually controlled to descend.

[0014] On the basis of the above scheme, a lifting hole matched with the optical axis is opened on the lifting platform, the optical axis is located inside the lifting hole, and the optical axis is slidably connected to the inner wall of the lifting hole, so that the lifting platform is more stable.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present application provides a lifting device for maintenance of thermal power plants, which has the following features:

[0017] Beneficial effects:

[0018] The hoisting device for maintenance of the thermal power plant is provided by adding a lifting platform on both sides of the gantry. A card block is provided at one end of the lifting platform and fits into a corresponding card slot to prevent the object from falling suddenly due to a rope breakage. A mechanical claw is installed on the lifting platform to facilitate the lifting of various objects, so that the objects to be lifted can be clamped. Since a parallelogram structure is connected to the mechanical claw for up and down rotation, the operator can freely adjust the opening amplitude of the mechanical claw according to the size of the object, thereby increasing the stability and safety of the object lifting during the lifting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 It is a schematic diagram of a partial three-dimensional structure of this application;

[0021] Figure 3 It is a schematic diagram of a partial three-dimensional structure of this application;

[0022] Figure 4 It is a schematic diagram of a partial three-dimensional structure of this application;

[0023] Figure 5 This is a schematic diagram of the structure of the chamfering block in this application;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the gantry in this application.

[0025] In the figure: 1. gantry; 2. overhead crane; 3. hook; 4. positioning slot; 5. optical axis; 6. lifting platform; 7. one-way moving structure; 8. C-shaped shell; 9. motor; 10. turbine rod; 11. turbine; 12. connecting frame; 13. shaft; 14. adjusting rod; 15. gear; 16. mechanical claw; 17. pop-up spring; 18. slot; 19. fixing hole; 20. limit slot; 21. baffle; 22. connecting rod; 23. chamfered block; 24. wheel slot; 25. ladder; 26. rectangular notch; 27. pull rod; 28. handle; 29. ​​grabbing slot; 30. lifting hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] See also Figures 1 to 6 A lifting device for maintenance of a thermal power plant comprises a gantry 1. The gantry 1 can be installed at different locations according to requirements. A crane 2 is arranged on the gantry 1. A hook 3 is arranged on the crane 2. Two positioning grooves 4 are provided on the gantry 2. The outer wall of an optical axis 5 is slidably connected to the inner wall of the positioning groove 4. A lifting platform 6 can be slidably connected to the outer wall of the optical axis 5 only through the inner wall of a lifting hole 30. A one-way moving mechanism 7 is arranged on the lifting platform 6, and a C-shaped shell 8 is installed on the bottom surface of the right end of the lifting platform 6.

[0028] The one-way moving mechanism 7 includes two pop-up springs 17. A fixing hole 19 and a limiting groove 20 are provided on the lifting platform 6. The right ends of the two pop-up springs 17 are fixedly installed on the right side wall of the fixing hole 19, and the left ends of the two pop-up springs 17 are fixedly connected to the baffle 21, so that the pop-up springs 17 are not easy to deviate, and two connecting rods 22 are fixedly installed on the left surface of the baffle 21. The left ends of the two connecting rods 22 penetrate the lifting platform 6 and extend to the inside of the limiting groove 20 through a sliding connection, and the left ends of the two connecting rods 22 are fixedly connected with chamfered blocks 23, so that the chamfered blocks 23 can be located inside the corresponding grooves 18 during the rising period, so as to realize the stable rising of the lifting platform 6. A pull rod 27 is installed on the right side of the baffle 21, and the right end of the pull rod 27 penetrates the lifting platform 6 and extends to the outside, and a handle 28 is fixedly installed on the right end of the pull rod 27. The handle 28 is provided with anti-slip grooves to prevent the handle from slipping out during pulling. The pull rod is connected to the lifting slidingly.

[0029] Second, see Figure 2 , 4In this embodiment, a motor 9 is fixedly installed on the inner wall side of the C-shaped housing 8, and a worm 10 is provided at the output end of the motor 9 to mesh with a turbine 11. Connecting frames 12 are fixedly installed on the upper and lower planes of the inner wall of the C-shaped housing 8. Four adjusting rods 14 are rotatably connected to the two connecting frames 12 on the opposite sides through the shaft 13, and two mutually meshing gears 15 are also connected between the two connecting frames 12 through the shaft 13. The gears 15 are respectively arranged on the outer side walls of the shaft 13 located at the top, and mechanical claws 16 are rotatably connected between the four corresponding adjusting rods 14 through two shafts 13, and the corresponding two adjusting rods 14 are in a parallelogram structure, which can enable the mechanical claws 16 to be freely opened and clamped, and the worm wheel 11 is fixedly installed on the outer side wall of the shaft 13 located at the top.

[0030] Again, see Figure 1 , 2 In the present embodiment, there are two mechanical claws 16, and the front ends of the inner walls of the two mechanical claws 16 are provided with grasping grooves 29, which are trapezoidal and can better clamp objects when grasping them. A rectangular notch 26 is provided on the gantry 1, and wheel grooves 24 are provided on both sides of the gantry 1. The overhead crane 2 realizes reciprocating movement by cooperating with the wheel grooves 24, and the overhead crane 2 and the hook 3 are of an integrated structure to lift objects, and a ladder 25 is provided on one side of the gantry 1.

[0031] Working principle:

[0032] When using the lifting device for maintenance of thermal power plants, first place the lifting device for maintenance of thermal power plants at the desired position, and then adjust the opening range of the mechanical claw 16 according to the needs. The specific operation is: move the overhead crane 2 to the desired position through the matching connection with the wheel groove 24, and then lower the hook 3 to the top of the object through the wire rope, and fix the object and the hook 3.

[0033] Secondly, adjust the position of the mechanical claw 16. The specific operation is: turn on the motor 9 fixed on the inner side of the C-shaped shell 8 through the switch. When the motor 9 rotates forward, it drives the turbine rod 10 set at its output end to rotate together. Because the turbine rod 10 and the turbine 11 are meshed with each other, the turbine 11 rotates forward accordingly. The turbine 11 is connected to the outer wall of the shaft 13 through rotation, driving the shaft 13 to rotate together. Because the two meshing gears 15 between the shaft 13 and the connecting frame 12 are transmission connections, the gear 15 on the same side of the shaft 13 rotates in the same direction as the shaft 13, and the other gear 15 rotates in the opposite direction. Also connected to the outer wall of the shaft 13 are four corresponding adjustment rods 14 opposite to the two connecting frames 12. The four corresponding adjustment rods 14 are rotatably connected with the mechanical claw 16 through the two shafts 13. The adjustment rod 14 opens with the rotation direction of the gear 15, thereby driving the mechanical claw 16 to open, and vice versa.

[0034] Finally, the lifting platform 6 moves. The specific operation is as follows: because the mechanical claw 16 has clamped the object, when the hook 3 rises with the object, the mechanical claw 16 rises accordingly. Since the mechanical claw 16 is fixed to the lifting platform 6 through the C-shaped shell 8, the lifting platform 6 is lifted by the optical axis 5 that is slidably connected to the inner wall of the lifting hole 30. When the lifting platform 6 rises, the arc surface of the chamfered block 23 and the inside of the card slot 18 will be squeezed, so the squeezing force will push back the two connecting rods 22 connected to the chamfered block 23. At this time, the chamfered block 23 will be retracted to the limit. The two pop-up springs 17 will be evenly stressed to preserve the squeezing force. When rising to the next slot 18, the pop-up spring 17 will bounce the squeezing force back to the baffle 21, and the baffle 21 will push the connecting rod 22. The connecting rod 22 will push the chamfered block 23 from the limiting slot 20 back to the inside of the slot 18 to achieve upward movement. Since the bottom surface of the chamfered block 23 is a plane, even if the hook lock breaks, the chamfered block 23 will be locked with the bottom of the slot 18 and will not fall suddenly.

[0035] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A lifting device for maintenance of a thermal power plant, comprising a gantry (1), characterized in that: The gantry (1) is provided with a crane (2), the crane (2) is provided with a hook (3), the gantry (1) is provided with two positioning grooves (4), the inner wall of the positioning groove is provided with an optical axis (5), the optical axis (5) is provided with a lifting platform (6), the lifting platform (6) is provided with a one-way moving mechanism (7), and the lifting platform (6) is provided with a C-shaped housing (8), the inner wall of the C-shaped housing (8) is installed with a motor (9), the output end of the motor (9) is provided with a worm (10), and the worm (10) is meshed with a worm wheel (11); Two connecting frames (12) are arranged on the inner wall of the C-shaped housing (8), and four adjusting rods (14) are rotatably connected to the opposite sides of the two connecting frames (12) via shafts (13), and two mutually meshing gears (15) are arranged between the two connecting frames (12), and each gear (15) is arranged on the outer side wall of the shaft (13) located at the top, and a mechanical claw (16) is rotatably connected to each of the four corresponding adjusting rods (14) via two shafts (13), and the corresponding two adjusting rods (14) are in a parallelogram structure, and the worm gear (11) is arranged on one of the shafts (13) located at the top.

2. A lifting device for maintenance of a thermal power plant according to claim 1, characterized in that: The one-way moving mechanism (7) comprises two pop-up springs (17), a plurality of slots (18) are provided on the gantry (1), a fixing hole (19) and a limiting slot (20) are provided on the lifting platform (6), one end of the two pop-up springs (17) are mounted on the inner wall of the fixing hole (19), and a baffle (21) is provided at the other end of the two pop-up springs (17), two connecting rods (22) are provided on one surface of the baffle (21), one end of the two connecting rods (22) passes through the lifting platform (6) and extends to the inside of the limiting slot (20), and one end of the two connecting rods (22) is provided with a chamfered block (23), and the chamfered block (23) is located inside the corresponding slot (18).

3. A lifting device for maintenance of a thermal power plant according to claim 1, characterized in that: There are two mechanical claws (16), and one end of the inner wall of the two mechanical claws (16) is provided with a grasping groove (29), and the grasping groove (29) is trapezoidal.

4. A lifting device for maintenance of a thermal power plant according to claim 1, characterized in that: The gantry (1) is provided with a rectangular notch (26), both sides of the gantry (1) are provided with wheel grooves (24), the overhead travelling crane (2) is connected with the two wheel grooves (24), and the overhead travelling crane (2) and the hook (3) are in an integrated structure, and a ladder (25) is provided on one side of the gantry (1).

5. A lifting device for maintenance of a thermal power plant according to claim 2, characterized in that: A pull rod (27) is provided on the other side of the baffle (21), one end of the pull rod (27) passes through the lifting platform (6) and extends to the outside, and a handle (28) is provided on one end of the pull rod (27), and the handle (28) is provided with anti-slip grooves, and the pull rod (27) is slidably connected to the lifting platform (6).

6. A lifting device for maintenance of a thermal power plant according to claim 1, characterized in that: The lifting platform (6) is provided with a lifting hole (30) adapted to the optical axis (5); the optical axis (5) is located inside the lifting hole (30), and the optical axis (5) is slidably connected to the inner wall of the lifting hole (30).

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