Auxiliary dismounting device for heavy crankshaft

Abstract

The utility model discloses a heavy crankshaft auxiliary dismounting device which comprises a pair of supporting frames, the supporting frames are symmetrically arranged, the top ends of the supporting frames are connected with a hoisting supporting plate, and the two ends of the hoisting supporting plate are symmetrically provided with a pair of rotating grooves. A pair of rotating grooves is formed in the top end of the door-shaped frame, a pair of rotating seats is assembled at the top ends of the pair of rotating grooves, and a pair of adjusting screw rods are connected to the pair of rotating seats in a threaded mode. The adjusting air cylinder is arranged on the door-shaped frame and used for adjusting the hoisting height, meanwhile, the pair of adjustable butt clamping seats is arranged to position and clamp the shaft ends of the two sides of the heavy crankshaft, in this way, operation is safer when the heavy crankshaft is hoisted, and due to the wrapping effect of the annularly-arranged rolling shafts, the heavy rolling shafts can rotate, and cleaning operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft disassembly devices, in particular to a heavy crankshaft auxiliary disassembly device. Background Art

[0002] The crankshaft is a commonly used power device in modern mechanical equipment. After being used for a period of time, the crankshaft needs to be disassembled and repaired due to wear and tear. The current crankshaft disassembly and inspection mainly includes removing the crankshaft inside the engine, and also includes fixed disassembly and inspection of the crankshaft outside the engine. When the crankshaft is disassembled and reinstalled at the current stage, the bearing and shaft diameter of the crankshaft need to be re-coated with lubricating oil, and the crankshaft journal needs to be cleaned. At this stage, the crankshaft, especially the heavy crankshaft, needs to be disassembled and inspected because the crankshaft has a thick shaft diameter. The cleaning of the heavy crankshaft journal during disassembly requires the use of lifting tools, so the operation is inconvenient and prone to danger. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was created. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a heavy crankshaft auxiliary disassembly device, which solves the existing background technology problems.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a heavy crankshaft auxiliary disassembly device, comprising a pair of support frames, the pair of support frames are symmetrically arranged, the top ends of the pair of support frames are connected with a hoisting support plate, and the two ends of the hoisting support plate are symmetrically provided with a pair of rotating grooves;

[0005] A pair of rotating seats are mounted on the top of the pair of rotating slots, a pair of adjusting screws are threadedly connected to the pair of rotating seats, and a pair of lifting blocks are connected to the bottom of the pair of adjusting screws;

[0006] Two pairs of sliding grooves are arranged on opposite wall surfaces of a pair of the support frames, and two pairs of sliding blocks are arranged on one side of a pair of the lifting blocks, and the two pairs of sliding blocks are assembled in the two pairs of sliding grooves;

[0007] A pair of clamping seats are connected to the bottom ends of a pair of lifting blocks;

[0008] At least one pair of supporting balls is respectively installed at the bottom ends of a pair of supporting frames.

[0009] Preferably, a pair of pushing rods are connected to one side of a pair of the support frames.

[0010] Preferably, the pair of rotating seats are plates with internal thread structures, and the pair of adjusting screws are threadedly engaged with the pair of rotating seats.

[0011] Preferably, a pair of adjusting knobs are connected to the top ends of the pair of adjusting screws.

[0012] Preferably, the clamping base includes a pair of clamping bases with semi-annular structures, a pair of clamping bases are equipped with a pair of sliding grooves with semi-annular structures, a pair of sliding grooves are respectively equipped with a plurality of pairs of rollers, a pair of clamping bases are respectively provided with a pair of clamping nuts, and a lifting support plate is movably installed with tension screws respectively connected with a pair of clamping nuts.

[0013] Preferably, a pair of telescopic cylinders are respectively connected between the lifting support plate and the top ends of a pair of support frames.

[0014] Beneficial Effects

[0015] The utility model provides a heavy crankshaft auxiliary disassembly device. It has the following beneficial effects: the heavy crankshaft auxiliary disassembly device adopts a movable door-shaped frame as a support, an adjustment cylinder is arranged on the door-shaped frame for adjusting the hoisting height, and a pair of adjustable clamping seats are arranged to position and clamp the two side ends of the heavy crankshaft, so that the operation is safer when hoisting the heavy crankshaft, and the heavy roller can rotate due to the wrapping effect of the rollers arranged in an annular manner, and the cleaning operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a heavy crankshaft auxiliary disassembly device described in the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a heavy crankshaft auxiliary disassembly device described in the utility model.

[0018] Figure 3 It is a partial axonometric structural schematic diagram of a heavy crankshaft auxiliary disassembly device described in the utility model.

[0019] In the figure: 1. Support frame; 2. Lifting support plate; 3. Rotating groove; 4. Rotating seat; 5. Adjusting screw; 6. Lifting block; 7. Sliding groove; 8. Sliding block; 9. Clamping seat; 10. Support ball; 11. Push rod; 12. Adjusting knob; 13. Telescopic cylinder; 14. Guide column; 91. Clamping seat; 92. Roller; 93. Clamping nut; 94. Tension screw. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3The utility model provides an implementation scheme: during the disassembly and cleaning process of a heavy crankshaft, due to the heavy structure of the heavy crankshaft, a lifting device is required. However, the existing lifting device cannot flexibly control the posture of the crankshaft, resulting in inconvenient cleaning. Moreover, the existing lifting equipment mostly connects the crankshaft with a sling, so the posture control is complicated and the crankshaft and the crankshaft fixing device are easily damaged.

[0022] In order to solve the above problems, the present application discloses a heavy crankshaft auxiliary disassembly device, which adopts a door-shaped frame structure as a whole, and is specifically composed of a pair of support frames 1 and a lifting support plate 2. The lifting support plate 2 is connected to the top of the pair of support frames 1, and at least one pair of supporting balls 10 are respectively installed at the bottom ends of the pair of support frames 1, so that the heavy crankshaft can be moved by the supporting balls 10 after the heavy crankshaft is lifted;

[0023] In order to maintain the flexibility of the lifting equipment, a pair of rotating grooves 3 are symmetrically opened at both ends of the lifting support plate 2. The pair of rotating grooves 3 are used as guide grooves, and a pair of rotating seats 4 are used as supporting devices for a pair of adjusting screws 5. The height of the lifting block 6 can be adjusted by rotating the adjusting screws 5, thereby adjusting the position of a pair of clamping seats 9. The two ends of the crankshaft are clamped by a pair of clamping seats 9 respectively, so that the pair can be realized. Furthermore, two pairs of sliding grooves 7 are provided on the relative wall surfaces of a pair of support frames 1, and two pairs of sliding blocks 8 are provided on one side of a pair of lifting blocks 6. The two pairs of sliding blocks 8 are assembled in the two pairs of sliding grooves 7 to stabilize the posture of a pair of lifting blocks 6 and play a role in strengthening support.

[0024] According to the instructions attached Figure 1-3 It can be seen that a pair of pushing rods 11 are connected to one side of a pair of support frames 1, and the pair of pushing rods 11 are used as handrails to move the entire frame. A pair of telescopic cylinders 13 are respectively connected between the lifting support plate 2 and the top of the pair of support frames 1, and further, a pair of guide grooves and a pair of guide columns 14 are auxiliaryly arranged on both sides of the telescopic cylinders 13. The pair of telescopic cylinders 13 are synchronously controlled by solenoid valves to adjust the lifting and lowering of the lifting support plate 2.

[0025] A pair of rotating seats 4 are plates with internal thread structures, a pair of adjusting screws 5 are threadedly engaged with the pair of rotating seats 4, and the top ends of the pair of adjusting screws 5 are connected to a pair of adjusting knobs 12, which can be used to facilitate the rotation of the pair of adjusting screws 5 and engage with the rotating seats 4.

[0026] According to the instruction manual Figure 1-3 It can be seen that further, the clamping seat 9 includes a pair of semi-annular clamping seats 91, a pair of semi-annular sliding grooves 7 are mounted on the pair of clamping seats 91, a pair of rollers 92 are respectively mounted in the pair of sliding grooves 7, a pair of clamping nuts 93 are respectively arranged on the pair of clamping seats 91, and a pair of tension screws 94 are movably mounted on the lifting support plate 2 and are respectively connected to the pair of clamping nuts 93;

[0027] In the specific implementation process, the tension screw 94 is engaged with a pair of clamping nuts 93, so that the pair of clamping nuts 93 move relative to each other under the reverse push of the thread, and then pull the pair of clamping seats 91 to move relative to each other. The semi-annular diameter of the pair of clamping seats 91 matches the diameter of the heavy crankshaft, and the roller 92 on the inner layer of the clamping seat 91 is used to reduce the resistance of the crankshaft, so that the crankshaft can be rotated for posture adjustment and cleaning.

[0028] Embodiment: Before use, the telescopic cylinder 13 is used to control the lifting support plate 2 to a suitable height, and then the adjusting screw 5 is rotated to lower the clamping seat 9 to the outside of the crankshaft end, and the tension screw 94 is rotated to clamp the two ends of the heavy crankshaft, and then the telescopic cylinder 13 is controlled to synchronously lift the lifting support plate 2 to separate the heavy crankshaft from its casing, and then the crankshaft journal is cleaned, and the bearing of the heavy crankshaft is positioned by a plurality of rollers 92, so that the heavy crankshaft can be rotated, which is convenient for cleaning the crankshaft in different aspects.

[0029] From the above, it can be generally known that the heavy crankshaft auxiliary disassembly device adopts a movable door-shaped frame as a support, and an adjusting cylinder is arranged on the door-shaped frame for adjusting the lifting height. At the same time, a pair of adjustable clamping seats 9 are provided to position and clamp the two side shaft ends of the heavy crankshaft, so that the operation is safer when lifting the heavy crankshaft, and after the heavy bearing is positioned, the heavy roller 92 can rotate due to the wrapping effect of the circularly arranged rollers 92, and the cleaning operation is more convenient.

[0030] Although embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy crankshaft auxiliary disassembly device, comprising a pair of support frames (1), wherein the pair of support frames (1) are symmetrically arranged, and the top ends of the pair of support frames (1) are connected with a lifting support plate (2), characterized in that: A pair of rotation grooves (3) are symmetrically provided at both ends of the hoisting support plate (2); A pair of rotating seats (4) are mounted on the top ends of the pair of rotating grooves (3); a pair of adjusting screws (5) are threadedly connected to the pair of rotating seats (4); and a pair of lifting blocks (6) are connected to the bottom ends of the pair of adjusting screws (5); Two pairs of sliding grooves (7) are arranged on opposite wall surfaces of a pair of the support frames (1), two pairs of sliding blocks (8) are arranged on one side of a pair of the lifting blocks (6), and the two pairs of sliding blocks (8) are assembled in the two pairs of sliding grooves (7); A pair of clamping seats (9) are connected to the bottom ends of the pair of lifting blocks (6); At least one pair of supporting balls (10) are respectively installed at the bottom ends of a pair of supporting frames (1).

2. A heavy crankshaft auxiliary disassembly device according to claim 1, characterized in that: A pair of pushing rods (11) are connected to one side of a pair of support frames (1).

3. A heavy crankshaft auxiliary disassembly device according to claim 2, characterized in that: The pair of rotating seats (4) are plates with internal thread structures, and the pair of adjusting screws (5) are threadedly engaged with the pair of rotating seats (4).

4. A heavy crankshaft auxiliary disassembly device according to claim 3, characterized in that: A pair of adjusting knobs (12) are connected to the top ends of the pair of adjusting screws (5).

5. A heavy crankshaft auxiliary disassembly device according to claim 4, characterized in that: The clamping seat (9) comprises a pair of clamping seats (91) of semi-annular structure, a pair of sliding grooves (7) of semi-annular structure are installed on the pair of clamping seats (91), a pair of rollers (92) are respectively installed in the pair of sliding grooves (7), a pair of clamping nuts (93) are respectively arranged on the pair of clamping seats (91), and a pair of tension screws (94) are movably installed on the lifting support plate (2) and are respectively connected to the pair of clamping nuts (93).

6. A heavy crankshaft auxiliary disassembly device according to claim 5, characterized in that: A pair of telescopic cylinders (13) are respectively connected between the lifting support plate (2) and the top ends of a pair of support frames (1).

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