Universal puller for dismounting coupler

Abstract

The utility model relates to the technical field of coupler disassembly pullers, in particular to a universal puller for coupler disassembly, which comprises a base, two fixing columns, a cross beam, a pull claw lifting device, a pull claw device and an ejector rod, wheels are arranged on two sides of the bottom surface of the base and are movably arranged along a ground rail, and the two fixing columns are vertically arranged on the top surface of the base. The cross beam is fixedly arranged at the upper ends of the two fixed columns; the pull claw lifting device is arranged between the two fixing columns, the pull claw device is arranged on a moving plate of the pull claw lifting device, and the ejector rod is arranged in the middle of the pull claw device. When a large instrument coupler is disassembled and assembled, an operator does not need to carry the coupler, time and labor are saved, the working efficiency is greatly improved, the distance between the pulling claws is adjustable, and the coupler disassembling tool is suitable for disassembling couplings of different sizes and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of motor performance testing, in particular to a universal puller used for disassembling a coupling. Background Art

[0002] Pullers are tools frequently used in mechanical maintenance, and are mainly used to dismantle parts such as gears or bearings installed on shafts with interference fit. The large-tonnage pullers widely used in the market are generally complex in structure and heavy, and cannot be used conveniently and quickly for equipment with large coupling diameters. They are usually only suitable for a certain fixed type of coupling and cannot be used to dismantle couplings of different diameters.

[0003] At present, the pullers released on the market are mainly used for disassembling workpieces. For some workpieces with special shapes and structures, when assembling two workpieces, it is impossible to directly place the stressed workpiece in the corresponding installation position, and secondary clamping is required, which increases the assembly process and operation time, has low efficiency, and is inconvenient to operate.

[0004] A universal puller for coupling disassembly disclosed in the Chinese utility model patent application disclosure CN 215433482 U can complete the assembly and disassembly process of the first workpiece and the second workpiece by clamping once, thus improving the work efficiency. However, it is very laborious for operators to carry and disassemble the coupling of large equipment, and it is not convenient to handle coupling claws of different sizes. The purpose of the utility model is to provide a universal puller for coupling disassembly to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a universal puller for disassembling a coupling, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A universal puller for coupling disassembly, comprising a base, two fixed columns, a crossbeam, a claw lifting device, a claw device and a mandrel, wherein wheels are arranged on both sides of the bottom surface of the base, and the wheels are arranged along the ground rails, the two fixed columns are vertically fixed on both sides of the top surface of the base, and the crossbeam is fixed on the upper ends of the two fixed columns;

[0008] The claw lifting device includes a moving plate, a scissor jack, a steel wire, a pulley and a second pulley. Sliding grooves are provided on the inner side walls of the two fixed columns. Both ends of the moving plate are slidably clamped in the sliding grooves of the two fixed columns. A fixing hole is provided in the middle of the upper end of the moving plate. The scissor jack is fixed on a base beside the fixed column. The pulley is arranged in the middle of the top surface of the beam. The second pulley is arranged on the beam on one side of the scissor jack. One end of the steel wire is connected to the fixing hole, and the other end passes through the pulley and the second pulley in turn to be connected to the scissor jack.

[0009] The push rod is horizontally arranged in the middle of the movable plate through a thread, and a plurality of claw adjustment holes are evenly opened on the movable plate with the push rod as the center. The plurality of claws are slidably arranged in the claw adjustment holes, and a claw fixing joint is provided at the tail of the claw, and the fixed position of the claw in the claw adjustment hole is adjusted by the claw fixing joint.

[0010] Preferably, a heavy block is provided at the bottom of the scissor jack.

[0011] Preferably, a rocker is provided on one side of the scissor jack.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When disassembling and assembling the coupling of a large device, the operator does not need to carry it, which saves time and effort, greatly improves the working efficiency, and the distance between the pulling claws is adjustable, which is suitable for the disassembly of couplings of different sizes and has a wide range of applications.

[0014] 2. The utility model has a simple structure, is easy to operate and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a left side schematic diagram of the overall structure of the utility model;

[0018] In the figure: 1. ground rail; 2. wheel; 3. base; 4. fixed column; 5. movable plate; 6. crossbeam; 7. pull claw adjustment hole; 8. pull claw; 9. pull claw fixing joint; 10. push rod; 12. scissor jack; 13. steel wire; 14. fixing hole; 15. pulley; 16. coupling; 17. motor; 18. fixed seat; 19. load-bearing block; 20. rocker; 21. second pulley. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0021] like Figure 1-3 As shown, a technical solution provided by the utility model:

[0022] A universal puller for coupling disassembly, comprising a base 3, two fixed columns 4, a crossbeam 6, a claw lifting device, a claw device and a mandrel 10, wherein wheels 2 are arranged on both sides of the bottom surface of the base 3, and the wheels 2 are arranged along the ground rail 1, the two fixed columns 4 are vertically fixed on both sides of the top surface of the base 3, and the crossbeam 6 is fixed on the upper ends of the two fixed columns 4;

[0023] The claw lifting device includes a moving plate 5, a scissor jack 12, a steel wire 13, a pulley 15 and a second pulley 21. Sliding grooves are provided on the opposite inner side walls of the two fixed columns 4. Both ends of the moving plate 5 are slidably clamped in the sliding grooves of the two fixed columns 4. A fixing hole 14 is provided in the middle of the upper end of the moving plate 5. The scissor jack 12 is fixed on the base 3 beside the fixed column 4. The pulley 15 is arranged in the middle of the top surface of the crossbeam 6. The second pulley 21 is arranged on the crossbeam 6 on one side of the scissor jack 12. One end of the steel wire 13 is connected to the fixing hole 14, and the other end is connected to the scissor jack 12 by bypassing the pulley 15 and the second pulley 21 in turn. A heavy block 19 is provided at the bottom of the scissor jack 12, and a rocker 20 is provided on one side of the scissor jack 12. The height of the moving plate 5 can be adjusted by the scissor jack 12 and the steel wire 13, thereby adjusting the height of the claw 8 and the top rod 10.

[0024] The push rod 10 is horizontally arranged in the middle of the movable plate 5 through a thread. Three claw adjustment holes 7 are evenly opened on the movable plate 5 with the push rod 10 as the center. The three claws 8 are slidably arranged in the claw adjustment holes 7. The tail of the claw 8 is provided with a claw fixing joint 9. The fixed position of the claw 8 in the claw adjustment hole 7 is adjusted by the claw fixing joint 9. The fixed position of the claw 8 in the claw adjustment hole 7 can be adjusted by the claw fixing joint 9 to be suitable for the disassembly of couplings 16 of different diameters.

[0025] The number of the claw adjustment holes 7 and the claws 8 can also be any value between 2 and 6.

[0026] When the universal puller for disassembling a coupling of the present embodiment is used, the present invention is first pushed, and the wheel 2 on the base 3 moves along the ground rail 1, and the whole is moved to the front of the coupling to be disassembled. The rocker 20 is manually cranked to start the scissor jack 12, driving the steel wire 13 to move up and down. The steel wire 13 drives the movable plate 5 to move up and down along the fixed column 4 through the pulley 15 and the second pulley 21 until the top rod 10 is at the same height as the coupling 16 to be disassembled, and then the horizontal distance between the coupling 16 and the top rod 10 is adjusted so that the top rod 10 is against the central axis, and the claw 8 is released through the claw fixing joint 9 so that the three claws 8 move in the claw adjusting hole 7. After the front ends of the three claws 8 clamp the coupling 16, the claw 8 is fixed, and the motor 17 is fixed on the ground, and the device of the present invention is pushed backward. At the same time, an operator twists the top rod 10 from the back so that the top rod 10 is against the central axis, and the coupling 16 can be disassembled.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A universal puller for disassembling a coupling, characterized in that: It comprises a base (3), two fixed columns (4), a crossbeam (6), a claw lifting device, a claw device and a top rod (10), the bottom surface of the base (3) is provided with wheels (2), the wheels (2) are arranged along the ground rail (1), the two fixed columns (4) are vertically fixed on the top surface of the base (3), and the crossbeam (6) is fixed on the upper ends of the two fixed columns (4); The claw lifting device comprises a movable plate (5), a scissor jack (12), a steel wire (13), a pulley (15) and a second pulley (21); sliding grooves are provided on the inner side walls of the two fixed columns (4); both ends of the movable plate (5) are slidably clamped in the sliding grooves of the two fixed columns (4); a fixing hole (14) is provided in the middle of the upper end of the movable plate (5); the scissor jack (12) is fixed on the base (3) beside the fixed column (4); the pulley (15) is arranged in the middle of the top surface of the crossbeam (6); the second pulley (21) is arranged on the crossbeam (6) on one side of the scissor jack (12); one end of the steel wire (13) is connected to the fixing hole (14); the other end of the steel wire (13) is connected to the scissor jack (12) by passing through the pulley (15) and the second pulley (21) in sequence; The push rod (10) is horizontally arranged in the middle of the movable plate (5) through a thread, and a plurality of claw adjustment holes (7) are evenly opened on the movable plate (5) with the push rod (10) as the center, and the plurality of claws (8) are slidably arranged in the claw adjustment holes (7), and a claw fixing joint (9) is provided at the tail of the claw (8), and the fixed position of the claw (8) in the claw adjustment hole (7) is adjusted by the claw fixing joint (9).

2. The universal puller for coupling disassembly according to claim 1, characterized in that: A heavy block (19) is provided at the bottom of the scissor jack (12).

3. The universal puller for coupling disassembly according to claim 1, characterized in that: A rocker (20) is provided on one side of the scissor jack (12).

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