Quenching subzero treatment equipment for automobile hub bearing

Abstract

The utility model relates to the technical field of bearing quenching, in particular to quenching subzero treatment equipment for an automobile hub bearing. According to the technical scheme, the bearing quenching device comprises a quenching tank with a semicircular section, a cylindrical shaft is rotationally installed in the quenching tank, a connecting block is fixed to the curved surface of the cylindrical shaft, a containing net frame for containing a bearing is fixed to one side of the connecting block, and the top of the containing net frame is open; a screen plate used for covering the top of the placing screen frame is hinged to the end, close to the connecting block, of the placing screen frame, and a plurality of evenly-distributed through holes are formed in the placing screen frame and the screen plate. Quenching scrap iron can be cleaned in time in the quenching machining process, manpower is saved, extra time for cleaning the scrap iron is not needed, and the quenching efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing quenching, in particular to a deep cryogenic treatment device for quenching automotive hub bearings. Background Art

[0002] A bearing is an important mechanical part, which can reduce the friction coefficient during the movement of a mechanical rotating body. After the bearing is produced, it needs to be quenched to improve its strength, hardness, wear resistance, fatigue strength and toughness, etc. Specifically, the bearing is first heated above the critical temperature, held for a certain time, and then cooled at a rate greater than the critical cooling rate to ensure that austenite can be cooled at a rate exceeding the critical cooling rate, so as to obtain martensite structure and achieve the purpose of quenching. The cooling capacity requirements of the quenching liquid vary greatly for different steel grades;

[0003] During the bearing quenching process, the cooled iron filings will deposit in the quenching tank. When manually cleaning the debris, the quenching work has to be interrupted, and the quenching iron filings cannot be cleaned in time. Therefore, this application proposes a deep cryogenic treatment device for quenching automotive hub bearings. Summary of the Invention

[0004] The purpose of the utility model is to propose a deep cryogenic treatment device for quenching automotive hub bearings in view of the problem that quenching iron filings cannot be cleaned in time in the background art.

[0005] The technical solution of the utility model: A deep cryogenic treatment device for quenching automotive hub bearings includes a quenching tank with a semi-circular cross-section. A cylindrical shaft is rotatably installed in the quenching tank. A connecting block is fixed on the curved surface of the cylindrical shaft. A placement wire mesh frame for placing bearings is fixed on one side of the connecting block. The top of the placement wire mesh frame is open. One end of the placement wire mesh frame close to the connecting block is hinged with a wire mesh plate for covering the top of the placement wire mesh frame. A plurality of uniformly distributed through holes are opened on both the placement wire mesh frame and the wire mesh plate;

[0006] An opening and closing device is arranged on the connecting block for opening and closing the wire mesh plate;

[0007] A filter plate is fixed on the side of the connecting block away from the cylindrical shaft, and when the cylindrical shaft rotates, the end of the connecting block away from the cylindrical shaft slides in contact with the inner curved surface of the quenching tank. The filter plate is located above the wire mesh plate;

[0008] A slag filtering port and a bearing outlet are arranged on one side of the quenching tank. The bearing outlet is located above the slag filtering port.

[0009] Optionally, a servo motor is fixedly installed on the outer wall of the quenching tank. The output shaft of the servo motor is fixed with a driving pulley. One end of the cylindrical shaft is fixed with a driven pulley. A belt is arranged between the driving pulley and the driven pulley.

[0010] Optionally, the opening and closing device includes a cavity provided in the connecting block. An electric telescopic rod is installed in the cavity. A chute is formed on one side of the connecting block. A communication groove is formed between the chute and the cavity. A driving rod is slidably installed in the communication groove. The piston rod of the electric telescopic rod is fixed to the driving rod. An adjusting block fixed to the driving rod is slidably installed in the chute. An inclined rod is hinged between the adjusting block and the net plate.

[0011] Optionally, a track rod is fixed in the chute, and the adjusting block is slidably sleeved on the track rod.

[0012] Optionally, a sealing ring is fixed in the communication groove. The sealing ring is sleeved on the driving rod, and the inner wall of the sealing ring is in sliding contact with the driving rod.

[0013] Optionally, the cross-section of the quenching tank is a rectangular structure, and support leg piles are fixedly installed on the outer wall curved surface of the quenching tank.

[0014] Optionally, a drain pipe is fixedly installed at the bottom of the quenching tank, and a valve is installed on the drain pipe.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] By placing the bearing in the placement net frame, as the cylindrical shaft rotates, the placement net frame is driven to rotate into the quenching tank to quench the bearing. As the cylindrical shaft rotates counterclockwise, the filter plate enters the quenching tank and slides along the inner wall of the quenching tank to push the quenching iron filings out of the water surface until one end of the filter plate is aligned with the filter residue port and slides out in cooperation with the inclined filter plate, realizing the timely cleaning of the quenching iron filings during the quenching process, saving labor, without the need to spend extra time cleaning the iron filings, and improving the quenching efficiency.

[0017] After the filter plate is aligned with the bearing outlet, the inclined rod is adjusted to pull the net plate open. The bearing falls from the placement net frame and slides along the net plate onto the filter plate, and then slides down and is discharged from the bearing outlet, realizing the blanking of the bearing and completing the quenching process, with high automation and improved quenching efficiency.

[0018] The utility model realizes the timely cleaning of the quenching iron filings during the quenching process, saves labor, does not require extra time to clean the iron filings, and improves the quenching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an automobile wheel hub bearing quenching and cryogenic treatment device;

[0020] Figure 2 A schematic cross-sectional structure diagram of the quenching tank of an embodiment of the utility model is given;

[0021] Figure 3 For Figure 2 The enlarged structural diagram at A in

[0022] Figure 4 Provide a schematic cross-sectional structure diagram of a connecting block according to an embodiment of the present utility model.

[0023] Reference numerals: 1, quenching tank; 2, servo motor; 3, cylindrical shaft; 4, connecting block; 5, placement mesh frame; 6, mesh plate; 7, through hole; 8, adjusting block; 9, inclined rod; 10, filter plate; 11, filter residue port; 12, bearing outlet; 13, cavity; 14, electric telescopic rod; 15, sliding groove; 16, communicating groove; 17, driving rod. Specific embodiments

[0024] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Embodiment

[0025] As Figures 1-4 shown, the automobile hub bearing quenching and cryogenic treatment equipment proposed by the present utility model includes a quenching tank 1 with a semi-circular cross-section. The quenching tank 1 is used to hold cooling water. The cross-section of the quenching tank 1 is a rectangular structure, and support leg piles are fixedly installed on the outer wall curved surface of the quenching tank 1. A drain pipe is fixedly installed at the bottom of the quenching tank 1, and a valve is installed on the drain pipe. Opening the valve is used to change the water in the quenching tank 1.

[0026] A cylindrical shaft 3 is rotatably installed in the quenching tank 1. The center of the semi-circular cross-section of the quenching tank 1 is on the axis of the cylindrical shaft 3. A servo motor 2 is fixedly installed on the outer wall of the quenching tank 1. A driving pulley is fixed on the output shaft of the servo motor 2, and a driven pulley is fixed at one end of the cylindrical shaft 3. A belt is provided between the driving pulley and the driven pulley. Starting the servo motor 2 drives the driving pulley to rotate, and drives the driven belt and the cylindrical shaft 3 to rotate under the transmission of the belt.

[0027] A connecting block 4 is fixed on the curved surface of the cylindrical shaft 3. A placement mesh frame 5 for placing bearings is fixed on one side of the connecting block 4. The top of the placement mesh frame 5 is open. One end of the placement mesh frame 5 close to the connecting block 4 is hinged with a mesh plate 6 for covering the top of the placement mesh frame 5. A plurality of uniformly distributed through holes 7 are opened on both the placement mesh frame 5 and the mesh plate 6. The through holes 7 are used to discharge quenching iron filings. The inner diameter of the through holes 7 is smaller than the diameter of the bearing to prevent the bearing from passing through the through holes.

[0028] As Figures 2-4As shown in the figure, in this embodiment, it further includes an opening and closing device disposed on the connecting block 4 for opening and closing the mesh plate 6. The opening and closing device includes a cavity 13 disposed inside the connecting block 4, an electric telescopic rod 14 is installed in the cavity 13, a chute 15 is formed on one side of the connecting block 4, a communication groove 16 is formed between the chute 15 and the cavity 13, a driving rod 17 is slidably installed in the communication groove 16, the piston rod of the electric telescopic rod 14 is fixed to the driving rod 17, an adjusting block 8 fixed to the driving rod 17 is slidably installed in the chute 15, and an inclined rod 9 is hinged between the adjusting block 8 and the mesh plate 6. The electric telescopic rod 14 drives the driving rod 17 to move, drives the adjusting block 8 to move, so that the inclined rod 9 drives the mesh plate 6 to open or close.

[0029] Wherein, a track rod is fixed in the chute 15, and the adjusting block 8 is slidably sleeved on the track rod, and the track rod provides a movement track for the adjusting block 8.

[0030] In addition, a sealing ring is fixed in the communication groove 16, the sealing ring is sleeved on the driving rod 17, and the inner wall of the sealing ring is in sliding contact with the driving rod 17. The sealing ring ensures the sealing performance and prevents liquid from entering the cavity 13.

[0031] Furthermore, as Figures 2-3 shown, a filter plate 10 is fixed on the side of the connecting block 4 away from the cylindrical shaft 3, and when the cylindrical shaft 3 rotates, the end of the connecting block 4 away from the cylindrical shaft 3 slides in contact with the curved inner wall of the quenching tank 1. The filter plate 10 is located above the mesh plate 6. The cylindrical shaft 3 rotates, drives the placement mesh frame 5 to rotate into the quenching tank 1 for quenching the bearing, and the quenched iron filings fall into the quenching tank 1 through the through holes 7 on the placement mesh frame 5 and the mesh plate 6 for quenching processing.

[0032] It should be noted that a slag filter port 11 and a bearing outlet 12 are provided on one side of the quenching tank 1, and the bearing outlet 12 is located above the slag filter port 11. As the cylindrical shaft 3 rotates counterclockwise, the filter plate 10 enters the quenching tank 1 and slides in contact with the inner wall of the quenching tank 1 to push the iron filings out of the water surface until one end of the filter plate 10 is aligned with the slag filter port 11 and the inclined filter plate 10 slides off and is discharged, realizing timely cleaning of the quenched iron filings during the quenching process, saving labor, without the need to spend extra time cleaning the iron filings, and improving the quenching efficiency.

[0033] Working principle: Place the bearing in the placement frame 5, then start the electric telescopic rod 14 to drive the driving rod 17 to move, causing the adjusting block 8 to move, driving the inclined rod 9 to move and push the mesh plate 6 to cover the placement frame 5. The quenching tank 1 is filled with water. Start the servo motor 2 to drive the driving pulley to rotate, which drives the driven belt and the cylindrical shaft 3 to rotate under the transmission of the belt, driving the placement frame 5 to rotate and enter the quenching tank 1 for quenching the bearing. The quenched iron filings fall into the quenching tank 1 through the through holes 7 on the placement frame 5 and the mesh plate 6. As the cylindrical shaft 3 rotates counterclockwise, the filter plate 10 enters the quenching tank 1 and slides along the inner wall of the quenching tank 1 to push the iron filings out of the water surface until one end of the filter plate 10 is aligned with the slag discharge port 11 and slides out in cooperation with the inclined filter plate 10, realizing the timely cleaning of the quenched iron filings during the quenching process, saving labor, without the need to spend extra time cleaning the iron filings, and improving the quenching efficiency.

[0034] After the quenched debris is discharged, as the cylindrical shaft 3 continues to rotate counterclockwise, after the filter plate 10 is aligned with the bearing outlet 12, start the electric telescopic rod 14 to drive the driving rod 17 to move in the direction close to the electric telescopic rod 14, drive the adjusting block 8 to move, so that the inclined rod 9 pulls the mesh plate 6 to open, and the bearing falls from the placement frame 5 and slides down along the mesh plate 6 onto the filter plate 10, and then slides down and is discharged from the bearing outlet 12, realizing the blanking of the bearing and completing the quenching process, with a high degree of automation and convenient to use.

[0035] The above specific embodiments are merely several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. Automobile wheel hub bearing quenching and cryogenic treatment equipment, characterized in that: include: A quenching tank (1) having a semicircular cross section, a cylindrical shaft (3) being rotatably mounted in the quenching tank (1), a connecting block (4) being fixed to the curved surface of the cylindrical shaft (3), a placement screen frame (5) for placing a bearing being fixed to one side of the connecting block (4), the top of the placement screen frame (5) being open, a screen plate (6) for covering the top of the placement screen frame (5) being hingedly connected to one end of the placement screen frame (5) close to the connecting block (4), and a plurality of evenly distributed through holes (7) being provided on both the placement screen frame (5) and the screen plate (6); An opening and closing device is arranged on the connection block (4) and is opened and closed by a mesh plate (6); The filter plate (10) is fixed to a side of the connecting block (4) away from the cylindrical shaft (3), and as the cylindrical shaft (3) rotates, an end of the connecting block (4) away from the cylindrical shaft (3) slides in contact with the curved inner wall of the quenching tank (1), and the filter plate (10) is located above the mesh plate (6); A slag filter port (11) and a bearing outlet (12) are provided on one side of the quenching tank (1), and the bearing outlet (12) is located above the slag filter port (11).

2. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 1, characterized in that: A servo motor (2) is fixedly mounted on the outer wall of the quenching tank (1); a driving pulley is fixed to the output shaft of the servo motor (2); a driven pulley is fixed to one end of the cylindrical shaft (3); and a belt is provided between the driving pulley and the driven pulley.

3. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 1, characterized in that: The opening and closing device comprises a cavity (13) arranged in a connecting block (4), an electric telescopic rod (14) being installed in the cavity (13), a slide groove (15) being provided on one side of the connecting block (4), a connecting groove (16) being provided between the slide groove (15) and the cavity (13), a driving rod (17) being slidably installed in the connecting groove (16), a piston rod of the electric telescopic rod (14) being fixed to the driving rod (17), an adjusting block (8) being slidably installed in the slide groove (15) and being fixed to the driving rod (17), and an inclined rod (9) being hinged between the adjusting block (8) and the mesh plate (6).

4. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 3, characterized in that: A track rod is fixed in the slide groove (15), and the adjustment block (8) is slidably sleeved on the track rod.

5. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 3, characterized in that: A sealing ring is fixed in the communication groove (16), the sealing ring is sleeved on the driving rod (17), and the inner wall of the sealing ring is in sliding contact with the driving rod (17).

6. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 1, characterized in that: The cross section of the quenching tank (1) is a rectangular structure, and support leg piles are fixedly installed on the outer wall curved surface of the quenching tank (1).

7. The automobile wheel hub bearing quenching and cryogenic treatment equipment according to claim 1, characterized in that: A drain pipe is fixedly installed at the bottom of the quenching tank (1), and a valve is installed on the drain pipe.

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