Special tool for disassembling motor coupling

Abstract

A special tool for disassembling a motor coupler comprises a base, a lifting platform and a lifting device, the lifting platform is located above the base, the lifting device is located between the base and the lifting platform and connected with the base and the lifting platform, the height of the lifting platform can be adjusted through the lifting device, a groove is formed in one end of the top of the lifting platform, and the lifting platform is located in the groove. Limiting grooves are formed in the tops of the side walls of the two sides of the groove correspondingly. When the special tool is used for supporting the hydraulic puller, the hydraulic puller does not need to be lifted manually when the coupler is disassembled, especially in the process of adding a cushion block to increase the stroke of the puller, and therefore manpower is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tools for maintenance of hydropower stations, in particular to a special tool for disassembling a motor coupling. Background Art

[0002] Our company currently uses hydraulic pullers to dismantle motor couplings. Hydraulic pullers have a large thrust force, which can efficiently remove the couplings. However, since the couplings used in large motors are also large, the overall weight of the hydraulic puller is also large. In actual operation, maintenance personnel are required to hold the puller manually for a long time, which is labor-intensive.

[0003] In the river basin power plants under the jurisdiction of our company, the power of the technical water supply motor is generally 250kW, the matching coupling is large in size and weight, and the weight of the hydraulic puller is about 25kg. Limited by the stroke of the hydraulic puller, it is necessary to repeatedly add pads to increase the puller stroke during actual disassembly. In the process of adding pads to increase the puller stroke, two people are required to lift the puller together (one person on each side), and one person is required to add pads and hold the pads, and another person is required to operate the hydraulic jack of the hydraulic puller. Therefore, the entire coupling disassembly work requires 3-4 people to cooperate, which takes up a lot of manpower and is not efficient. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a special tool for disassembling a motor coupling, by which the special tool supports a hydraulic puller, and manpower can be reduced when disassembling the coupling.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a special tool for disassembling a motor coupling, comprising a base, a lifting platform and a lifting device, wherein the lifting platform is located above the base, the lifting device is located between the base and the lifting platform, and is connected to the base and the lifting platform, the lifting platform can adjust the height through the lifting device, a groove is provided at one end of the top of the lifting platform, and limiting grooves are respectively provided on the tops of the side walls on both sides of the groove.

[0006] A plurality of casters are installed at the bottom of the base.

[0007] The base is in the shape of a groove with an open upper side, and two side walls opposite to each other on the upper side of the base are respectively provided with a first sliding hole, and the lower side of the lifting platform is respectively provided with side edges extending downwardly on both sides corresponding to the first sliding hole, and the side edges on both sides are correspondingly provided with second sliding holes. The lifting device comprises two sets of scissor forks and an adjusting screw rod, the two sets of scissor forks are respectively located at the first sliding holes on both sides, and each set of scissor forks comprises a first connecting rod and a second connecting rod, the first pivot passes through the middle of the first connecting rod and the second connecting rod of the two sets of scissor forks, the lower ends of the second connecting rods of the two sets of scissor forks are connected to the base through the second pivot, the lower ends of the first connecting rods of the two sets of scissor forks are slidably connected to the first sliding hole through the third pivot, the upper ends of the first connecting rods of the two sets of scissor forks are connected to the two side faces of the lifting platform through the fourth pivot, the upper ends of the second connecting rods of the two sets of scissor forks are slidably connected to the second sliding hole through the fifth pivot, the adjusting screw rod is limited and rotated and installed on the base, and the adjusting screw rod is threadedly screwed to the third pivot.

[0008] The third pivot includes an adjustment block and a sliding shaft. The two sliding shafts are respectively located at two ends of the adjustment block. The two sliding shafts extend out of the first sliding holes on both sides respectively. The adjustment screw is threadedly connected to the adjustment block, and the adjustment screw is perpendicular to the sliding shaft.

[0009] The lifting platform is also provided with a groove-shaped support block.

[0010] The utility model has the following beneficial effects:

[0011] 1. The base of the utility model is used to stabilize the tooling, the lifting device is used to adjust the height of the lifting platform, the groove set on the lifting platform is used to accommodate the coupling, the flange of the coupling will not interfere with the lifting platform, and the top of the side walls on both sides of the groove are respectively provided with limit grooves, which are used to limit the two claws on the lower side of the hydraulic puller, so as to position the puller. The hydraulic puller is supported by the special tool, and when the coupling is disassembled, especially in the process of adding a pad to increase the puller stroke, there is no need to lift the hydraulic puller manually, thereby reducing manpower.

[0012] 2. The lifting platform of the utility model is also provided with a groove-shaped support block, which is used to support the jack of the hydraulic puller, so that the hydraulic puller can be placed on the lifting platform more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a three-dimensional schematic diagram of the utility model from another viewing angle.

[0016] Figure 3It is a three-dimensional structural schematic diagram of the utility model in use state.

[0017] Figure 4 It is a schematic diagram of the main structure of the utility model in use.

[0018] In the figure: base 1, first sliding hole 11, lifting platform 2, groove 21, limit groove 22, side 23, second sliding hole 24, support block 25, lifting device 3, first connecting rod 31, second connecting rod 32, first pivot 33, second pivot 34, fourth pivot 35, third pivot 36, adjustment block 361, sliding shaft 362, fifth pivot 37, adjustment screw 38, caster 4, hydraulic puller 5, pulling claw 51, coupling 6. DETAILED DESCRIPTION

[0019] See also Figure 1-4 A tool for disassembling a motor coupling includes a base 1, a lifting platform 2 and a lifting device 3. The lifting platform 2 is located above the base 1. The lifting device 3 is located between the base 1 and the lifting platform 2 and is connected to the base 1 and the lifting platform 2. The height of the lifting platform 2 can be adjusted through the lifting device 3. A groove 21 is provided at one end of the top of the lifting platform 2. Limiting grooves 22 are provided at the top of the side walls on both sides of the groove 21. The base 1 is used to stabilize the tool, the lifting device 3 is used to adjust the height of the lifting platform 2, and the groove 21 provided on the lifting platform 2 is used to accommodate the coupling 6. See Figure 3 , 4 When the coupling 6 is disassembled, since the end face of the coupling has a flange, and the diameter of the flange is much larger than the diameter of the coupling tube section, after the groove 21 is provided, the flange of the coupling will not interfere with the lifting platform 2. The top of the side walls on both sides of the groove 21 are respectively provided with limit grooves 22, see Figure 3 , 4 The limiting groove 22 is used to limit the two pulling claws 51 on the lower side of the hydraulic puller 5, so as to position the puller 5.

[0020] By supporting the hydraulic puller with the special tool, when disassembling the coupling, especially in the process of adding a cushion block to increase the puller stroke, there is no need to lift the hydraulic puller manually, thus reducing manpower.

[0021] For further information, see Figure 2 In order to facilitate the movement of the special tooling, four casters 4 are installed at the bottom of the base 1. Specifically, the four casters include two universal casters and two fixed casters, and the two universal casters are provided with brakes.

[0022] See also Figure 1In the preferred embodiment, the base 1 is in the shape of a slot with an open upper side, and the two opposite side walls on the upper side of the base 1 are respectively provided with first sliding holes 11, and the lower side of the lifting platform 2 is respectively provided with downwardly extending side edges 23 on both sides corresponding to the first sliding holes 11, and the side edges 23 on both sides are respectively provided with second sliding holes 24, and the lifting device 3 includes two sets of scissor forks and an adjusting screw rod 38, and the two sets of scissor forks are respectively located at the first sliding holes 11 on both sides, and each set of scissor forks includes a first connecting rod 31 and a second connecting rod 32, and the first pivot 33 passes through the first connecting rods 31 and 32 of the two sets of scissor forks. The lower ends of the second links 32 of the two sets of scissor forks are connected to the base 1 through the second pivot 34, and the lower ends of the first links 31 of the two sets of scissor forks are slidably connected to the first slide hole 11 through the third pivot 36. The upper ends of the first links 31 of the two sets of scissor forks are connected to the two sides 23 of the lifting platform 2 through the fourth pivot 35. The upper ends of the second links 32 of the two sets of scissor forks are slidably connected to the second slide hole 24 through the fifth pivot 37. The adjusting screw rod 38 is installed in the base 1 for limited rotation, and the adjusting screw rod 38 is threadedly connected to the third pivot 36. The height of the lifting platform 2 is adjusted by rotating the adjusting screw rod 38.

[0023] In addition to using the above-mentioned structure to achieve lifting, the special tooling can also adopt other structures, such as the low closed height lifting platform structure disclosed in CN203333239U.

[0024] If the adjusting screw rod 38 is directly threadedly connected to the third pivot 36, a threaded through hole must be provided in the third pivot 36, which reduces the structural strength of the third pivot 36, or a third pivot 36 with a larger diameter must be used. Figure 1 The third pivot 36 includes an adjustment block 361 and a sliding shaft 362. The two sliding shafts 362 are respectively located at both ends of the adjustment block 361. The two sliding shafts 362 extend out of the first sliding holes 11 on both sides. The adjustment screw 38 is threadedly connected to the adjustment block 361. The adjustment screw 38 is perpendicular to the sliding shaft 362. Through the above structure, the structural strength of the threaded connection between the adjustment screw 38 and the third pivot 36 is guaranteed.

[0025] See also Figure 1 A groove-shaped support block 25 is also provided on the lifting platform 2. The support block 25 is used to support the jack of the hydraulic puller so that the hydraulic puller can be placed on the lifting platform 2 more stably.

[0026] The working principle or use process of the utility model is as follows:

[0027] When in use, the two claws 51 at the lower side of the hydraulic puller 5 are fixed in position. The hydraulic puller 5 is first hoisted or lifted and placed on the lifting platform 2, and the two claws 51 at the lower side of the hydraulic puller 5 are placed in the limiting grooves 22 on both sides, and the claw 51 at the upper side is opened upwards.

[0028] First, adjust the lifting device 3 so that the two claws 51 on the lower side of the hydraulic puller 5 are lower than the coupling 6, and push the special tool so that the ends of the two claws 51 on the lower side are located at the rear side of the coupling flange. Then adjust the height of the lifting platform 2 through the lifting device 3 so that the two claws 51 on the lower side are stuck to the rear side of the coupling flange, and then flip the claw 51 on the upper side and also stick it to the rear side of the coupling flange. Then, the coupling can be disassembled by operating the operating lever of the jack at the rear end of the hydraulic puller 5 (the operating lever of the jack is not shown in the figure). In the process of adding pads to increase the puller stroke, there is no need to lift the hydraulic puller manually. The entire disassembly process can be completed by two people, reducing manpower.

Claims

1. A special tool for disassembling a motor coupling, characterized by: The invention comprises a base (1), a lifting platform (2) and a lifting device (3), wherein the lifting platform (2) is located above the base (1), the lifting device (3) is located between the base (1) and the lifting platform (2), and is connected to the base (1) and the lifting platform (2), the height of the lifting platform (2) can be adjusted by the lifting device (3), a groove (21) is provided at one end of the top of the lifting platform (2), and limiting grooves (22) are respectively provided at the tops of the side walls on both sides of the groove (21).

2. The special tool for disassembling a motor coupling according to claim 1, characterized in that: A plurality of casters (4) are installed at the bottom of the base (1).

3. The special tool for disassembling a motor coupling according to claim 1, characterized in that: The base (1) is in the shape of a groove with an open top. Two opposite side walls on the top of the base (1) are respectively provided with first sliding holes (11). The bottom of the lifting platform (2) is respectively provided with downwardly extending side edges (23) on both sides corresponding to the first sliding holes (11). Second sliding holes (24) are respectively provided on the side edges (23) on both sides. The lifting device (3) comprises two sets of scissor forks and an adjusting screw rod (38). The two sets of scissor forks are respectively located at the first sliding holes (11) on both sides. Each set of scissor forks comprises a first connecting rod (31) and a second connecting rod (32). The first pivot (33) passes through the first connecting rod (31) and the second connecting rod (32) of the two sets of scissor forks. In the middle part of the connecting rod (32), the lower ends of the second connecting rods (32) of the two sets of scissor forks are connected to the base (1) through the second pivot (34), the lower ends of the first connecting rods (31) of the two sets of scissor forks are slidably connected to the first sliding hole (11) through the third pivot (36), the upper ends of the first connecting rods (31) of the two sets of scissor forks are connected to the two side edges (23) of the lifting platform (2) through the fourth pivot (35), the upper ends of the second connecting rods (32) of the two sets of scissor forks are slidably connected to the second sliding hole (24) through the fifth pivot (37), the adjusting screw rod (38) is limitedly rotated and installed on the base (1), and the adjusting screw rod (38) is threadedly connected to the third pivot (36).

4. The special tool for disassembling a motor coupling according to claim 3, characterized in that: The third pivot (36) comprises an adjustment block (361) and a sliding shaft (362). The two sliding shafts (362) are respectively located at two ends of the adjustment block (361). The two sliding shafts (362) extend out of the first sliding holes (11) on both sides respectively. The adjustment screw rod (38) is threadedly connected to the adjustment block (361). The adjustment screw rod (38) is perpendicular to the sliding shaft (362).

5. The special tool for disassembling a motor coupling according to claim 1, characterized in that: A groove-shaped support block (25) is also provided on the lifting platform (2).

Images