Maintenance-free bearing rotating device of shot blasting machine

Abstract

The maintenance-free bearing rotating device of the shot blasting machine comprises a transmission shaft, a sealing device, a bearing, a bearing seat and a supporting plate, one end of the transmission shaft penetrates through the shot blasting machine, the sealing device comprises a sealing seat and a sealing ring, the sealing device is connected with the transmission shaft, the sealing seat is installed on the shot blasting machine, and the bearing seat is installed on the supporting plate. The sealing ring is arranged in the sealing seat, a self-tightening spiral spring is arranged in the sealing ring, the supporting plate comprises a bed plate and a supporting rib plate, the bed plate is installed at the bottom of the supporting rib plate, the bed plate and the supporting rib plate are both connected with a shot blasting machine, the bearing is installed in the bearing seat, and the sealing ring is arranged in the bearing seat. An inner ring of the bearing is connected with the transmission shaft, and the bearing seat is installed at the bottom of the bed board. The utility model provides a novel rotating device which can prevent the bearing from being damaged and prolong the service life of a transmission device.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical equipment technical field of shot -blasting machine especially relates to a kind of maintenance-free bearing rotating device of shot -blasting machine. BACKGROUND

[0002] Shot -blasting machine is a kind of surface treatment equipment, which is used to throw pellets by high-speed rotation of the blade of the shot -blasting machine, and hit the surface of the workpiece to achieve the effect of metal or non-metal surface cleaning and strengthening. It can not only complete the surface cleaning work, but also realize the functions of material separation, pellet recycling and dust removal. The rotating shaft of the shot -blasting machine is a key component that connects the shot -blasting machine and the driving motor. The traditional rotating shaft is composed of a transmission shaft, a sealing plate, a sealing ring and a bearing. The bearing is the main load-bearing component of the rotating shaft. The damage of the bearing is the main cause of the damage of the transmission component. After many generations of improvement, the service life has been greatly improved. However, in some special working conditions, the transmission part cannot be damaged. The traditional rotating shaft has the following disadvantages:

[0003] 1. The bearing in the traditional rotating shaft usually selects F-type bearing seat, which bears the functions of transmission, sealing and load-bearing, resulting in insufficient sealing performance and load-bearing capacity. The service rate of the F-type bearing seat currently in use is only 90%, which cannot meet the design requirements.

[0004] 2. In the design of the traditional rotating shaft of the shot -blasting machine, the sealing structure may be relatively simple, such as using traditional gasket sealing. The traditional sealing method may not completely prevent impurities and dust from entering in complex working environment. SUMMARY

[0005] The utility model aims at solving the above-mentioned problems and provides a kind of maintenance-free bearing rotating device of shot -blasting machine.

[0006] To achieve the above-mentioned purpose, the following technical solutions are adopted:

[0007] A kind of maintenance-free bearing rotating device of shot -blasting machine, including transmission shaft, sealing device, bearing, bearing seat and support plate, one end of the transmission shaft passes through shot -blasting machine, the sealing device includes sealing seat and sealing ring, the sealing device is connected with the transmission shaft, the sealing seat is installed on shot -blasting machine, the sealing ring is arranged in the sealing seat, self-tightening coil spring is arranged in the sealing ring, the support plate includes deck and support rib plate, the deck is installed at the bottom of the support rib plate, and the deck and the support rib plate are connected with shot -blasting machine, the bearing is installed in the bearing seat, the inner ring of the bearing is connected with the transmission shaft, and the bearing seat is installed at the bottom of the deck.

[0008] Preferably, the sealing seat is provided with a mounting groove inside, the sealing ring is located in the mounting groove, and a plurality of first threaded holes are formed on the sealing seat.

[0009] Preferably, the inside of the mounting groove is provided with a plurality of fixing columns, the sealing ring is provided with a groove matched with the fixing columns, and the sealing seat is not in direct contact with the transmission shaft.

[0010] Further, a gap exists between the sealing ring and the sealing seat, so that the sealing ring can maintain a certain gap during installation, avoiding excessive compression or deformation, thereby ensuring the sealing performance.

[0011] Preferably, the inside of the sealing ring is provided with a sealing groove and a spring groove matched with the self-tightening coil spring, the inside of the sealing groove is provided with a support ring, the sealing ring is made of rubber material, and the support ring is made of steel plate.

[0012] Preferably, the side surface of the sealing ring is provided with a first sealing lip and a second sealing lip, and the first sealing lip is in close contact with the transmission shaft.

[0013] Preferably, the second sealing lip is inclined, the inclination angle is 30°-60°, and the second sealing lip is not in direct contact with the transmission shaft.

[0014] Preferably, the bearing seat is in a vertical structure, the bottom of the bearing seat is provided with a second threaded hole, and the pavement is provided with a round hole matched with the second threaded hole.

[0015] Preferably, the pavement and the support rib plate are connected by welding.

[0016] Compared with the prior art, the bearing seat of the device is in a vertical structure, the bottom of the bearing seat is connected with the pavement, the load borne by the bearing can be transmitted in the vertical direction, the problem of excessive local stress of the bearing is reduced, the load of the bearing is concentrated on the bottom of the bearing seat and transmitted to the support plate and the rib plate, the transmission mode makes the force evenly distributed on the contact surface of the bearing seat and the pavement, the stability of the device is further improved, the load bearing capacity of the rotating shaft is greatly improved, and the service life of the bearing is prolonged.

[0017] The device adopts the combined sealing structure of the sealing seat and the skeleton oil seal, the inside of the sealing ring is filled with lubricant, and the self-tightening spring is added, so that the close contact between the sealing ring and the transmission shaft can be ensured, thereby effectively preventing the fluid or gas, achieving better sealing effect, avoiding the impurities in the shot blasting machine entering the bearing and causing damage to the bearing, and prolonging the service life of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of a maintenance-free bearing rotating device of a shot blasting machine of the utility model embodiment 1;

[0019] Figure 2 It is a cross section schematic view of a maintenance-free bearing rotating device of a shot blasting machine of the utility model embodiment 1;

[0020] Figure 3 It is a sealing device schematic view of a maintenance-free bearing rotating device of a shot blasting machine of the utility model embodiment 1;

[0021] Figure 4 It is a bearing seat schematic view of a maintenance-free bearing rotating device of a shot blasting machine of the utility model embodiment 1;

[0022] Figure 5 It is a schematic view of a maintenance-free bearing rotating device of a shot blasting machine of the utility model embodiment 1;

[0023] In the figure: transmission shaft 1; sealing device 2; sealing seat 21; sealing ring 22; installation groove 211; first threaded hole 212; fixed column 213; self-tightening spiral spring 221; recess 222; sealing groove 223; spring groove 224; support ring 225; first sealing lip 226; second sealing lip 227; bearing 3; bearing seat 4; second threaded hole 41; support plate 5; paving plate 51; support rib plate 52; round hole 53; DETAILED DESCRIPTION

[0024] Hereinafter, a maintenance-free bearing rotating device of a shot blasting machine of the utility model is specifically described with reference to the drawings.

[0025] As shown in Figure 1 , Figure 2 A maintenance-free bearing rotating device of a shot blasting machine, including transmission shaft 1, sealing device 2, bearing 3, bearing seat 4 and support plate 5, one end of transmission shaft 1 passes through shot blasting machine, sealing device 2 includes sealing seat 21 and sealing ring 22, sealing device 2 is connected with transmission shaft 1, sealing seat 21 is installed on shot blasting machine, sealing ring 22 is arranged inside sealing seat 21, self-tightening spiral spring 221 is provided in sealing ring 22, support plate 5 includes paving plate 51 and support rib plate 52, paving plate 51 is installed at the bottom of support rib plate 52, and paving plate 51 and support rib plate 52 are both connected with shot blasting machine, bearing 3 is installed in bearing seat 4, inner ring of bearing 3 is connected with transmission shaft 1, bearing seat 4 is installed at the bottom of paving plate 51.

[0026] As shown in Figure 3As shown, the sealing seat 21 is internally provided with a mounting groove 211, the sealing ring 22 is located in the mounting groove 211, the sealing seat 21 is provided with a plurality of first threaded holes 212, the inside of the mounting groove 211 is provided with a plurality of fixing columns 213, the sealing ring 22 is provided with a groove 222, the groove 222 is matched with the fixing column 213, the sealing seat is not in direct contact with the transmission shaft, the inside of the sealing ring 22 is provided with a sealing groove 223 and a spring groove 224, the spring groove 224 is matched with the self-tightening coil spring 221, the inside of the sealing groove 223 is provided with a support ring 225, the sealing ring 22 is made of rubber material, the support ring 225 is made of steel plate, the side of the sealing ring 22 is provided with a first sealing lip 226 and a second sealing lip 227, the first sealing lip 226 is in close contact with the transmission shaft 1, the second sealing lip 227 is inclined, the inclination angle is 30°-60°, and the second sealing lip is not in direct contact with the transmission shaft 1.

[0027] The lip part connected with the transmission shaft 1 can closely fit the surface of the transmission shaft 1 to form an effective sealing barrier, and on this basis, the fixing column 213 and the groove 222 can fix the sealing ring 22 to prevent the sealing ring 22 from rotating with the transmission shaft 1, thereby ensuring the sealing effect.

[0028] As shown in the figure, Figure 4 The bearing seat 4 is in a vertical structure, the bottom of the bearing seat 4 is provided with a second threaded hole 41, the deck plate 51 is provided with a circular hole 53, the circular hole 53 is matched with the second threaded hole 41, and the deck plate 51 and the support rib plate 52 are connected by welding.

[0029] The vertical structure makes the bearing 3 and the bearing seat 4 occupy more compact space in the vertical direction, which is beneficial to realize the optimized layout of space in mechanical design, and makes the bearing 3 more effectively support and transmit load in the vertical direction, thereby improving the carrying capacity of the bearing 3.

[0030] In this embodiment, as shown in the figure, Figures 1-5As shown, the support ring 225 is filled into the inside of the sealing ring 22, the sealing ring 22 is filled into the sealing seat 21, the groove 222 on the sealing ring 22 and the fixed column 213 in the sealing seat 21 are mutually embedded, the assembled sealing device 2 is connected with the transmission shaft 1, the sealing seat 21 is bolted on the shot blasting machine, the lubricant is added to the position of the first sealing lip 226 to reduce the friction between the sealing device 2 and the transmission shaft 1, the support rib plate 52 and the paving plate 51 are installed on the side of the shot blasting machine, after the installation is completed, the bearing 3 is placed on the rotating shaft and is pressed into the appropriate position by using the tool, the bearing 3 on the transmission shaft 1 is installed into the bearing seat 4, and the bearing seat 4 is connected on the paving plate 51 by using the bolt, the paving plate 51 and the support rib plate 52 can bear the load from the transmission shaft 1, so as to improve the stability of the device.

[0031] The above only provides the preferred examples of the present application and is not used to limit the present application. For the person skilled in the art, the present application can have other optimization schemes and additional functions. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A shot-blasting machine maintenance-free bearing rotating device, characterized by: The application relates to a sealing device for a transmission shaft, which comprises a transmission shaft (1), a sealing device (2), a bearing (3), a bearing seat (4) and a support plate (5), one end of the transmission shaft (1) penetrates a shot blasting machine, the sealing device (2) comprises a sealing seat (21) and a sealing ring (22), the sealing device (2) is connected with the transmission shaft (1), the sealing seat (21) is installed on the shot blasting machine, the sealing ring (22) is arranged in the sealing seat (21), a self-tightening spiral spring (221) is arranged in the sealing ring (22), the support plate (5) comprises a paving plate (51) and a support rib plate (52), the paving plate (51) is located at the bottom of the support rib plate (52), and the paving plate (51) and the support rib plate (52) are connected with the shot blasting machine, the bearing (3) is installed in the bearing seat (4), the inner ring of the bearing (3) is connected with the transmission shaft (1), and the bearing seat (4) is installed at the bottom of the paving plate (51).

2. The shot-blasting machine maintenance-free bearing rotating device according to claim 1, characterized in that: The sealing seat (21) is internally provided with an installation groove (211), the sealing ring (22) is located in the installation groove (211), and a plurality of first threaded holes (212) are arranged on the sealing seat (21).

3. The shot-blasting machine maintenance-free bearing rotating device according to claim 2, characterized in that: The installation groove (211) is internally provided with a plurality of fixing columns (213), the sealing ring (22) is provided with a groove (222), the groove (222) is matched with the fixing columns (213), and the sealing seat (21) is not in direct contact with the transmission shaft (1).

4. The shot-blasting machine maintenance-free bearing rotating device according to claim 1, characterized in that: The sealing ring (22) is internally provided with a sealing groove (223) and a spring groove (224), the spring groove (224) is matched with the self-tightening spiral spring (221), the sealing groove (223) is internally provided with a supporting ring (225), the sealing ring (22) is made of rubber material, and the supporting ring (225) is made of a steel plate.

5. The shot-blasting machine maintenance-free bearing rotating device according to claim 4, characterized in that: The sealing ring (22) is provided with a first sealing lip (226) and a second sealing lip (227) on the side surface, the first sealing lip (226) is in close contact with the transmission shaft (1).

6. The shot-blasting machine maintenance-free bearing rotating device according to claim 5, characterized in that: The second sealing lip (227) is in an inclined shape, the inclination angle is 30-60 degrees, and the second sealing lip (227) is not in direct contact with the transmission shaft (1).

7. The shot-blasting machine maintenance-free bearing rotating device according to claim 1, characterized in that: The bearing seat (4) is in a vertical structure, the bottom of the bearing seat (4) is provided with a second threaded hole (41), the paving plate is provided with a round hole (53), and the round hole (53) is matched with the second threaded hole (41).

8. The shot-blasting machine maintenance-free bearing rotating device according to claim 1, characterized in that: The paving plate (51) and the support rib plate (52) are connected in a welding mode.

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