Novel shafting locking device of vertical mill powder concentrator

Abstract

The utility model belongs to the technical field of mechanical equipment, and particularly relates to a novel shafting locking device of a vertical mill powder concentrator, which comprises an upper end cover, a lower end cover and a reinforcing rib plate, the upper end cover and the lower end cover are connected through a bolt and mounted on a cage frame, and a vertical shaft is mounted in a shaft hole of the upper end cover. A plurality of reinforcing rib plates are arranged on the side edge of the lower end cover at intervals in the circumferential direction of the outer side wall of the lower end cover, the lower ends of the reinforcing rib plates are fixedly connected to the cage frame, and the upper ends of the reinforcing rib plates protrude towards the lower end cover and are pressed on the lower end cover. When the torque of the vertical shaft is too high and the cage frame falls due to overload, the upper end of the reinforcing plate rib is hung on the lower end cover, the lower end of the reinforcing plate rib hangs the cage frame to prevent the cage frame from falling off, and an overload protection effect can be achieved compared with a coupler. The vertical shaft locking device is simple in structure and convenient to manufacture and install, can play a role in locking between vertical shaft systems in a long-term vibration environment, is convenient to maintain and repair, and only needs to check the condition of the bolts regularly.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, and specifically relates to a novel shaft system locking device for a vertical mill powder separator. Background Art

[0002] The shaft locking device is an important component for realizing the transmission of the vertical mill powder classifier. Its working principle is to use friction to lock the shaft hub, and through the action of high-strength bolts, a huge clamping force is generated between the upper end cover and the shaft, and between the lower end cover and the upper end cover; when bearing load, the torque is transmitted by the friction generated by this clamping force to make the transmission smoother and have an overload protection function. The shaft locking device in the prior art uses a coupling to connect the vertical shaft and the cage bracket. During actual use, the shaft of the vertical mill powder classifier and the powder classifier cage rotate out of center, and the bolts often loosen, causing safety hazards, seriously affecting the normal operation of the powder classifier, and failing to play an overload protection role. It is urgent to improve this problem. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a novel shaft locking device for a vertical mill powder classifier to solve the problems of non-concentric rotation of the shaft of the vertical mill powder classifier and the cage of the powder classifier and lack of overload protection.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new shaft locking device for a vertical mill powder classifier, comprising an upper end cover, a lower end cover and a reinforcing rib plate, the upper end cover and the lower end cover are connected by bolts and installed on a cage, the vertical shaft is installed in the shaft hole of the upper end cover, a plurality of reinforcing rib plates are arranged at intervals on the side of the lower end cover along the circumferential direction of the outer side wall of the lower end cover, the lower end of the reinforcing rib plate is fixedly connected to the cage, and the upper end of the reinforcing rib plate protrudes toward the lower end cover and is pressed against the lower end cover.

[0005] Preferably, the reinforcing rib plate is made of a steel plate with a thickness of 50 mm to 80 mm.

[0006] Preferably, eight reinforcing ribs are evenly spaced apart.

[0007] Preferably, a through hole is provided on the lower end cover, a countersunk hole is provided at the upper end of the through hole, the lower end of the upper end cover is installed in the through hole, and the upper end of the upper end cover is installed in the countersunk hole.

[0008] Preferably, the through hole is in the shape of an inverted frustum, and the inner diameter of the through hole gradually increases from bottom to top, and the outer diameter of the lower end of the upper end cover is set corresponding to the inner diameter of the through hole.

[0009] Preferably, 8 bolt holes are correspondingly arranged on the upper end cover, the lower end cover and the cage frame, and the bolts pass through the upper end cover, the lower end cover and the cage frame in sequence, and are fixed by nuts.

[0010] Preferably, the bolts are reamed hole bolts.

[0011] Preferably, positioning holes are correspondingly provided on the upper end cover and the lower end cover, and positioning pins are installed in the positioning holes.

[0012] Preferably, the diameter of the positioning pin decreases from top to bottom, and the positioning holes on the upper end cover and the lower end cover are arranged corresponding to the positioning pin.

[0013] Preferably, two positioning holes are symmetrically arranged on the upper end cover and the lower end cover.

[0014] Compared with the prior art, the above technical solution has the following beneficial effects:

[0015] 1. The utility model comprises an upper end cover, a lower end cover and a reinforcing rib plate, the lower end of the reinforcing rib plate is fixedly connected to the cage, the upper end of the reinforcing rib plate is protruded toward the lower end cover and pressed against the lower end cover, when the vertical shaft torque is too high and causes the cage to overload and fall, the upper end of the reinforcing rib plate is hung on the lower end cover, and the lower end hangs the cage to prevent the cage from falling off, which can play an overload protection role compared with the coupling; the utility model has a simple structure and is easy to manufacture and install. Through this device, the vertical shaft system can be locked in a long-term vibration environment, and maintenance is convenient, and only the bolt condition needs to be checked regularly.

[0016] 2. Positioning by locating pins can ensure good installation accuracy and avoid rotation eccentricity problems caused by low installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a top view of the utility model.

[0019] Among them: 1, strengthening rib plate 2, upper end cover 3, lower end cover 4, hinged hole bolt 5, positioning pin 6, cage frame 7, through hole 8, countersunk hole 9, shaft hole 10, positioning hole. DETAILED DESCRIPTION

[0020] Figure 1~2 It is the best embodiment of the utility model, and the following Figure 1~2 The utility model is further described.

[0021] A novel shaft locking device for a vertical mill powder classifier comprises an upper end cover 2, a lower end cover 3 and a reinforcing rib plate 1. The upper end cover 2 and the lower end cover 3 are connected by bolts and installed on a cage 6. The lower end cover 3 is installed on the upper side of the cage 6. The vertical shaft is installed in the shaft hole 9 of the upper end cover 2. The vertical shaft transmits power to the cage 6 through the upper end cover 2 and the lower end cover 3. A plurality of reinforcing rib plates 1 are arranged at intervals on the side of the lower end cover 3 along the circumferential direction of the outer side wall of the lower end cover 3. The lower end of the reinforcing rib plate 1 is fixedly connected to the cage 6. The upper end of the reinforcing rib plate 1 protrudes toward the lower end cover 3 and is pressed against the lower end cover 3. When the torque of the vertical shaft is too high and causes the cage 6 to fall due to overload, the upper end of the reinforcing rib plate 1 is hung on the upper and lower ends of the lower end cover 3 to suspend the cage 6 to prevent the cage 6 from falling off. Compared with a coupling, it can play an overload protection role.

[0022] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0023] like Figure 1 As described, a through hole 7 is provided on the lower end cover 2, a countersunk hole 8 is provided at the upper end of the through hole 7, the lower end of the upper end cover 2 is installed in the through hole 7, the upper end of the upper end cover 2 is installed in the countersunk hole 8, and bolt holes are provided correspondingly on the upper end cover 2, the lower end cover 3 and the cage 6, the bolts pass through the upper end cover 2, the lower end cover 3 and the cage 6 in sequence, and the bolts are fixed by nuts. Specifically, the through hole 7 is in the shape of an inverted truncated cone, the inner diameter of the through hole 7 gradually increases from bottom to top, and the outer diameter of the lower end of the upper end cover 2 is set corresponding to the inner diameter of the through hole 7, so that the upper end cover 2 and the lower end cover 3 are more tightly and firmly matched.

[0024] Positioning holes 10 are also processed correspondingly on the upper end cover 2 and the lower end cover 3, and positioning pins 5 are installed in the positioning holes 10. In the present embodiment, two positioning holes 10 are symmetrically arranged on the upper end cover 2 and the lower end cover 3, and the diameter of the positioning pin 5 decreases from top to bottom. The positioning holes 10 on the upper end cover 2 and the lower end cover 3 are arranged corresponding to the positioning pins 5. In the present embodiment, the upper and lower diameters of the positioning pin 5 are 42 mm and 20 mm respectively. Positioning by the positioning pin 5 can well ensure the installation accuracy and avoid the problem of rotation eccentricity caused by low installation accuracy.

[0025] like Figure 2 As shown, 8 reinforcing rib plates 1 are evenly spaced, and the reinforcing rib plates 1 are made of steel plates with a thickness of 50 mm to 80 mm. In this embodiment, the reinforcing rib plates 1 are made of steel plates with a thickness of 60 mm, which can withstand strong torque.

[0026] Eight bolt holes are correspondingly arranged on the upper end cover 2, the lower end cover 3 and the cage frame 6. The bolts in this embodiment are hinged hole bolts 4. The upper end cover 2 and the lower end cover 3 are connected in a buckle manner and are connected by eight M48*250 hinged hole bolts 4. Compared with ordinary bolts, the hinged hole bolts 4 have a longer service life in a long-term vibration environment and are not easy to fall off.

[0027] In this embodiment, the ATOX50 vertical mill powder separator is taken as an example, and the device is installed below the vertical shaft of the ATOX50 vertical mill powder separator. When the utility model is in use, the vertical shaft is subjected to the torque transmitted by the motor, and the upper end cover 2 generates friction with the vertical shaft, and the torque is transmitted to the upper end cover 2, and then the torque is transmitted to the cage 6 below through 8 M48*250 hinged hole bolts 4, the upper end cover 2 and the lower end cover 3, so that the cage 6 rotates smoothly with the vertical shaft. When the system torque is overloaded or a problem occurs, the upper end cover 2 slips due to insufficient friction to transmit the torque, reducing the problem of non-concentric rotation of the vertical shaft and the cage 6 and the lack of overload protection, ensuring that the vertical shaft of the vertical mill powder separator can be locked, so that the powder separator can run smoothly and efficiently, and at the same time, the upper end of the reinforcing rib plate 1 is hung on the lower end cover 3, and the lower end hangs the cage 6 to prevent the cage 6 from falling off. The utility model has a simple structure and is easy to manufacture and install. Through this device, the vertical shaft system can be locked in a long-term vibration environment, and maintenance is convenient, and only the bolt condition needs to be checked regularly.

[0028] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A new type of shaft locking device for a vertical mill powder separator, characterized in that: The invention comprises an upper end cover (2), a lower end cover (3) and a reinforcing rib plate (1), wherein the upper end cover (2) and the lower end cover (3) are connected by bolts and mounted on a cage frame (6), the vertical shaft is mounted in an axial hole (9) of the upper end cover (2), a plurality of reinforcing rib plates (1) are arranged at intervals on the side of the lower end cover (3) along the circumferential direction of the outer wall of the lower end cover (3), the lower end of the reinforcing rib plate (1) is fixedly connected to the cage frame (6), and the upper end of the reinforcing rib plate (1) is protruding toward the lower end cover (3) and pressed against the lower end cover (3).

2. According to claim 1, a novel shaft locking device for a vertical mill powder separator is characterized in that: The reinforcing rib plate (1) is made of a steel plate with a thickness of 50 mm to 80 mm.

3. According to claim 1, a novel shaft locking device for a vertical mill powder concentrator is characterized in that: A through hole (7) is provided on the lower end cover (3), a countersunk hole (8) is provided at the upper end of the through hole (7), the lower end of the upper end cover (2) is mounted in the through hole (7), and the upper end of the upper end cover (2) is mounted in the countersunk hole (8).

4. According to claim 3, a novel shaft locking device for a vertical mill powder concentrator is characterized in that: The through hole (7) is in the shape of an inverted truncated cone, and the inner diameter of the through hole (7) gradually increases from bottom to top. The outer diameter of the lower end of the upper end cover (2) is set to correspond to the inner diameter of the through hole (7).

5. According to claim 1, a novel shaft locking device for a vertical mill powder concentrator is characterized in that: Eight bolt holes are correspondingly arranged on the upper end cover (2), the lower end cover (3) and the cage frame (6), and the bolts pass through the upper end cover (2), the lower end cover (3) and the cage frame (6) in sequence, and are fixed by nuts.

6. A novel shaft locking device for a vertical mill powder concentrator according to claim 1 or 5, characterized in that: The bolt is a reamed hole bolt (4).

7. According to claim 1, a novel shaft locking device for a vertical mill powder concentrator is characterized in that: Positioning holes (10) are correspondingly provided on the upper end cover (2) and the lower end cover (3), and positioning pins (5) are installed in the positioning holes (10).

8. The novel shaft locking device for a vertical mill powder concentrator according to claim 7 is characterized in that: The diameter of the positioning pin (5) decreases from top to bottom, and the positioning holes (10) on the upper end cover (2) and the lower end cover (3) are arranged corresponding to the positioning pin (5).

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