CN201020611Y - A large bearing dismounting device - Google Patents

Abstract

A large-scale bearing dismounting device, including a hanging piece, the lower end of the hanging piece is provided with a main shaft; a top base, a through hole is opened in the center, the main shaft passes through the through hole and slides freely; a support plate is fixed on the The lower end of the main shaft has three slide slots on the side; and three claw hooks, the upper ends of which are rotatably connected to the top seat. The utility model has the advantages of simple structure and convenient operation, and does not need personnel to assist in the operation at the bottom of the bearing. Improve work efficiency, thus achieving safety, reliability and high efficiency.

Description

A large bearing dismounting device

technical field

The utility model relates to a bearing dismounting device, in particular to a large bearing dismounting device.

Background technique

Baosteel's wide and thick plate rolling mill work roll radial bearing is a four-row tapered roller bearing. The outer diameter of the bearing is ∮1000mm and the height is 800mm. A tool for lifting the bearing is provided along with it for disassembly and assembly. The working principle of the prior art is that telescopic sliding sleeves are installed on the four load-bearing legs of the spreader. When the bearing needs to be disassembled, the load-bearing legs of the spreader are lowered to the bottom of the bearing parts, and the sliding sleeves are manually stretched out to support the end face of the bearing. The weight of the suspended bearing falls on the four sliding sleeves when the hoisting equipment is hoisted. Since the installation hole of the bearing seat is more than 1 meter deep, the sliding sleeve cannot be touched by human hands, so every time the bearing is disassembled, someone needs to drill into the bearing hole to manually control the expansion and contraction of the sliding sleeve. The operation is quite cumbersome and there is a greater safety hazard Hidden dangers and low work efficiency.

The Chinese utility model patent No. 200520051495.7 discloses a four-row bearing hanger (as shown in Figure 1) specially used for the maintenance of four-row tapered bearings and for lifting the inner ring of the bearing (as shown in Figure 1), which consists of a beam 1, a tension rod 2 or 2' , drag hook 3, suspension ring 4, connecting rod 5 or 5' and splint 7 or 8 are formed. When the bearing needs to be hoisted, the suspension hook 3 is hooked on the bearing pin 13, and the suspension ring 4 is lifted. First lift the sling and then drop the sling to the bearing being lifted, insert the splint 7 or 8 into the inner ring of the bearing, continue to drop the lifting ring 4 and the lifting hook 3, and the connecting rod 5 or 5' goes down together with the lifting ring 4 The end splints 7 or 8 of the booster rod 2 or 2 ′ move closer to the middle, and the draw hook 3 breaks away from the pin shaft 13 . Then lift the lifting ring 4, and the connecting rod 5 or 5' pulls the upper end of the tension rod 2 or 2' to move closer to the middle, so that the splint 7 or 8 is close to the inner ring of the bearing, clamps the inner ring of the bearing and lifts it to the designated place, then puts down the sling Remove the bearing to complete the lifting procedure. This technology has the disadvantages of complex structure and inconvenient operation.

Utility model content

The purpose of the utility model is to provide a large-scale bearing dismounting device, which does not require personnel to assist in the operation at the bottom of the bearing, can improve work efficiency, and achieves safety and high efficiency. The structure is simple and the operation is convenient.

The purpose of this utility model is achieved in that it includes a suspension joint, which is characterized in that the lower end of the suspension joint is provided with a main shaft; a top seat has a through hole in the center, and the main shaft passes through the through hole and slides freely; A support plate, fixed on the lower end of the main shaft, with three chutes on the side; and three hooks, the upper ends of which are rotatably connected to the top seat, the legs of the hooks are accommodated in the chute of the support plate, and the ends of the hooks are outward stick out.

Preferably, the dismounting device further includes a locking bolt, the top base is provided with a transverse threaded hole, and the locking bolt passes through the threaded hole to tighten the main shaft.

Preferably, there are three coupling grooves at the installation position of the claw hook on the top seat, and the claw hook is placed in the coupling groove and connected by a pivot; the inner side of the chute on the support plate is a slope, and corresponding to the angle of inclination.

Preferably, both the top seat and the supporting plate are in the shape of a Y-shaped trisection.

Preferably, the end of the hook is flat and protrudes outward horizontally.

The utility model improves the structure of the bearing dismounting device, adopts a top seat divided into three equal parts, a support plate and a claw hook, has a simple structure, is easy to operate, is safe and reliable, reduces operating costs, and avoids the occurrence of personal injury accidents.

Description of drawings

Fig. 1 is a structural schematic diagram of a bearing dismounting device in the prior art.

Fig. 2 is a sectional view of the top seat of the present utility model.

Fig. 3 is a sectional view of the utility model along the direction A-A in Fig. 2 .

Figure 4 is a top view of the support disc and spindle.

Fig. 5 is an expanded sectional view along the line A-A of Fig. 4 .

Fig. 6 is a working diagram of the utility model.

Detailed ways

Embodiment of the utility model is described below in conjunction with accompanying drawing.

As shown in Figures 2, 3, 4 and 5, the device includes a main shaft 102, the upper end of the main shaft 102 is connected with a suspension ring 101, and the connection method can be bolted or welded. The lower end of the main shaft 102 is connected with the support plate 106, which can be welded or bolted. A top seat 103 has a through hole in the center, and the diameter of the through hole is slightly larger than the diameter of the main shaft 102. The main shaft 102 passes through the through hole and can move freely up and down. The top seat 103 has a transverse threaded hole. When the main shaft 102 needs to be fixed, the locking bolt 107 passes through the threaded hole to tighten the main shaft 102 to fix it. In this embodiment, the shape of the top seat 103 is a Y shape divided into three equal parts. There are three coupling grooves at the installation position of the claw hooks 105 on the top seat 103. The upper ends of the three claw hooks 105 are pivotally connected to the top seat through locking pivots 104. In the combination notch of 103, can rotate freely. The legs of the claw hook 105 are accommodated in the chute of the support plate 106. The inside of the chute of the support plate 106 is a slope, corresponding to the angle of inclination of the claw hook 105, which facilitates the extension and closing of the claw hook 105. The end of the claw hook 105 Protrude outwards and form a step shape, if the gap at the bottom of the bearing 110 (as shown in FIG. 6 ) is small, the end of the claw hook 105 can still be inserted.

The working process of the present utility model is as follows: as shown in Figure 6, when the large ball bearing needs to be dismantled, use lifting equipment to hang the suspension ring 101 on the top of the main shaft 102, first loosen the locking bolt 107, so that the main shaft 102 can move up and down, and Through the upward movement of the support plate 106 fixed on the main shaft 102, the claw hook 105 is opened, and the end of the claw hook 105 is attached to the inner hole 109 of the bearing and slowly falls. When the end of the claw hook 105 falls away from the bottom of the bearing 110, the claw The hook 105 naturally opens to support the lower end surface of the bearing 110. At this time, the hoisting equipment lifts the suspension ring, and the suspension ring is upwardly stressed, driving the support plate and the claw hook to complete the disassembly of the ball bearing, which is safe, convenient and efficient.

Claims (7)

1. a large size bearing attaching/detaching apparatus comprises and hangs fitting, it is characterized in that:

The lower end of hanging fitting is provided with a main shaft;

A footstock, the center has a through hole, and main shaft passes from through hole and is free to slide;

A supporting disk is fixed in the main shaft lower end, and the side has three chutes; And

Three claw hooks, the upper end is rotatably connected on the footstock, and the leg of claw hook is placed in the supporting disk chute, and the claw hook end is protruding.

2. large size bearing attaching/detaching apparatus as claimed in claim 1 is characterized in that: also comprise clamping screw, described footstock has a horizontal thread hole, and clamping screw passes screwed hole and holds out against main shaft.

3. large size bearing attaching/detaching apparatus as claimed in claim 1 is characterized in that: the installation site of claw hook has three engagement grooves on the described footstock, and described claw hook places this engagement groove, by pivotally connected; Chute inboard on the described supporting disk is the inclined-plane, and is corresponding with the angle that claw hook tilts.

4. as claim 1,2,3, any described large size bearing attaching/detaching apparatus, it is characterized in that: described footstock and supporting disk all are trisection bifurcation shape.

5. large size bearing attaching/detaching apparatus as claimed in claim 1 is characterized in that: described supporting disk adopts bolt to be connected with main shaft.

6. large size bearing attaching/detaching apparatus as claimed in claim 1 is characterized in that: described supporting disk and main shaft adopt welding.

7. large size bearing attaching/detaching apparatus as claimed in claim 6 is characterized in that: described claw hook is terminal to be flat, and outwards level is stretched out.

Images