Gear quenching device

Abstract

The gear quenching device comprises a heating furnace, a feeding port and a discharging port are formed in the left side and the right side of the heating furnace respectively, a first guide rail is arranged at the position, corresponding to the feeding port, of the outer wall of the heating furnace, and a second guide rail is arranged in the heating furnace. A third guide rail is slidably connected to the position, corresponding to the discharging port, of the outer wall of the heating furnace, a quenching pool is connected to the outer wall of the heating furnace, a heater is arranged on the inner wall of the heating furnace, the two first guide rails, the two second guide rails and the two third guide rails are opposite, the cross sections of the guide rails are all in an L shape, and a sliding block is arranged at one end of each third guide rail. A vertical sliding groove is formed in the position, corresponding to the discharging opening, of the outer wall of the heating furnace, and the sliding block is slidably connected with the sliding groove. The gear quenching device has the advantages of being simple in structure, capable of achieving gear quenching treatment in batches and high in quenching efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing equipment, in particular to a gear quenching device. Background Art

[0002] Gears refer to mechanical components with gears on the rim that continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. At the end of the 19th century, the principle of gear cutting and the special machine tools and tools that use this principle to cut gears appeared one after another, and the application of gears has become more and more extensive. However, in the production and processing process of gear workshops, gears usually need to be quenched. The purpose of quenching is to transform the supercooled austenite into martensite or bainite to obtain martensite or bainite structure, and then temper it at different temperatures to greatly improve the rigidity, hardness, wear resistance, fatigue strength and toughness of the steel, so as to meet the different use requirements of various mechanical parts and tools. Quenching can also meet the special physical and chemical properties of certain special steels such as ferromagnetism and corrosion resistance.

[0003] Patent CN218089717U discloses a gear processing quenching device that is convenient for loading and unloading, including a quenching pool, a mounting seat is fixedly installed on the left side of the lower end of the quenching pool, a transmission box is arranged on the upper end of the mounting seat, a lifting cylinder is arranged above the transmission box, and a connecting plate is fixedly connected to the telescopic end of the lifting cylinder. During quenching, the clamping cylinder clamps the gear, and the driving gear is driven to rotate by the rotating motor, so that the driven gear drives the rotating shaft to rotate, and the gear is moved to the top of the quenching pool, and the gear is driven by the lifting cylinder to move downward into the heating induction coil, and the heating induction coil heats the gear to achieve loading. After heating, the gear moves downward into the quenching pool to achieve quenching treatment. At the same time, after quenching, the lifting cylinder drives the gear to move to the outside of the quenching pool, and the rotating motor drives the rotating shaft to rotate to move the gear to the specified position. When the device is in use, the clamping cylinder can only clamp one gear at a time, heat one gear and extend it into the quenching pool for quenching operation, which cannot meet the mass production of gear quenching. Utility Model Content

[0004] The purpose of the utility model is to provide a gear quenching device, which has the advantages of simple structure, capable of realizing gear quenching treatment in batches, and high quenching efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a gear quenching device, including a heating furnace, a feed port and a discharge port are respectively provided on the left and right sides of the heating furnace, a first guide rail is provided on the outer wall of the heating furnace corresponding to the feed port, a second guide rail is provided inside the heating furnace, a third guide rail is slidably connected to the outer wall of the heating furnace corresponding to the discharge port, and a quenching pool is connected to the outer wall of the heating furnace, and a heater is provided on the inner wall of the heating furnace.

[0006] Furthermore, the first guide rail, the second guide rail and the third guide rail are each provided with two opposite ones, and the cross-sectional shape of the guide rail is L-shaped.

[0007] Furthermore, a sliding block is provided at one end of the third guide rail, and a vertical sliding groove is provided on the outer wall of the heating furnace corresponding to the discharge port, and the sliding block is slidably connected to the sliding groove.

[0008] Furthermore, a connecting block is provided at the other end of the two third guide rails, a driving motor is provided above the quenching pool, a driving shaft of the driving motor is provided with a vertical screw rod, the other end of the screw rod passes through the connecting block and is rotatably connected to the bottom of the quenching pool, and the connecting block is adapted to the screw rod thread.

[0009] Furthermore, a liquid outlet is provided at the lower portion of the quenching tank.

[0010] Furthermore, a support seat is provided at one end of the first guide rail away from the heating furnace, and a pushing member for pushing the gear to move is installed on the support seat.

[0011] Furthermore, the pushing member is a hydraulic cylinder, and a pushing plate is provided on the telescopic shaft thereof.

[0012] Furthermore, the third guide rail is provided with a limit block near the screw rod.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] When in use, the gears are placed on the first guide rail in sequence. During the process of placing the gears in sequence, the gears at the front end are pushed forward in sequence by the gears at the rear end. When the second guide rail is full of gears, the placement of the gears on the first guide rail is stopped, and the gears on the second guide rail are heated in the heating furnace. After the gears are heated to the specified temperature, the gears continue to be placed on the first guide rail, and the gears are pushed as a whole to move by the pushing member, and the gears on the second guide rail are pushed onto the third guide rail, and the next group of gears to be heated are pushed onto the second guide rail. Then, quenching liquid is poured into the quenching pool, and the drive motor is started to drive the third guide rail and the gears to move downward to the quenching pool for quenching. After quenching is completed, the third guide rail is moved up to remove the gears, and the quenching liquid is taken out from the quenching pool to realize uninterrupted batch quenching treatment of the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 A top view of the third guide rail connection of the utility model;

[0017] Figure 3 for Figure 2 AA view of the .

[0018] In the figure: 1. Heating furnace; 2. Feed inlet; 3. Discharge outlet; 4. First guide rail; 5. Second guide rail; 6. Third guide rail; 7. Quenching pool; 8. Heater; 9. Slider; 10. Slide; 11. Connecting block; 12. Drive motor; 13. Screw rod; 14. Liquid outlet; 15. Support seat; 16. Pusher; 17. Push plate; 18. Limit block. DETAILED DESCRIPTION

[0019] The utility model will be further described below.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] See also Figure 1-3

[0023] A gear quenching device, characterized in that it includes a heating furnace 1, a feed port 2 and a discharge port 3 are respectively provided on the left and right sides of the heating furnace 1, a first guide rail 4 is provided on the outer wall of the heating furnace 1 corresponding to the feed port 2, a second guide rail 5 is provided inside the heating furnace 1, a third guide rail 6 is slidably connected to the outer wall of the heating furnace 1 corresponding to the discharge port 3, and a quenching pool 7 is connected to the outer wall of the heating furnace 1, and a heater 8 is provided on the inner wall of the heating furnace 1.

[0024] The heating furnace 1 adopts an insulation structure, and the inner layer adopts insulation material, such as alumina cement castable, which has a withstand temperature of 1300℃-1700℃ and the quenching temperature of the gear is generally 560-600℃, which can fully guarantee the fire resistance of the heating furnace 1. At the same time, the middle layer uses insulation material, such as aluminum silicate fiber, which has a fire resistance temperature of 800℃ and good insulation effect, so that the temperature in the heating furnace 1 can be maintained within the quenching temperature range of the gear. The outer side adopts a solid steel plate structure, and refractory alloy steel is preferably used. While ensuring the fire resistance, it can also ensure the hardness requirements of the outer wall of the heating furnace 1, which is convenient for installing other components.

[0025] The heater 8 can use a resistance heating wire, preferably a resistance heating wire made of metal materials such as iron-aluminum alloy, nickel-chromium alloy, etc., which can reach a maximum temperature of 1500°C, which can effectively ensure that the quenching temperature in the heating furnace 1 can be reached. At the same time, a thermocouple can be installed in the heating furnace 1 to monitor the temperature in the heating furnace 8 at any time, thereby facilitating the control of the heating temperature.

[0026] The first guide rail 4, the second guide rail 5 and the third guide rail 6 are each provided with two opposite ones, and the cross-sectional shape of the guide rails is L-shaped. The gears are placed by means of the two oppositely arranged guide rails. Specifically, the two guide rails with L-shaped cross sections are arranged opposite to each other, so that the connecting line of the two guide rail cross sections forms a U-shape as a whole, and the distance between the two L-shaped vertical inner sides is slightly larger than the outer diameter of the gear, so that the two sides of the gear can be placed on the horizontal sides of the L-shape, so that the gear can be placed between the two guide rails. At the same time, the lower end face of the feed port 2, the lower end face of the discharge port 3, the horizontal sides of the first guide rail 4, the second guide rail 5 and the third guide rail 6 of the L-shaped cross section are at the same horizontal height. Therefore, the specific movement process of the gears is as follows: first, the gears are placed on the horizontal sides of the first guide rail 4 in turn. In the process of placing the gears in turn, the gears at the front end are pushed forward in turn by the gears at the rear end, so that the gears at the front end are moved to the inner cavity of the heating furnace 1 for heating. When the gears on the second guide rail 5 are heated After completion, continue to place gears on the first guide rail 4, and push the gears on the second guide rail 5 onto the third guide rail 6 to realize the movement of the gears; it should be noted that when the gears move to the feed port 2 or the discharge port 3, since the heating furnace 1 itself has a certain thickness (i.e., the thickness of the feed port 2 and the discharge port 3), a part of the front end of the frontmost gear of the first guide rail 4 will be located in the feed port 2, and a part of the rear end of the gear at the end of the third guide rail 6 will be located in the discharge port 3. At this time, you can manually use pliers, push sticks, etc. to move the unheated gears slightly backward in turn, so that they move out of the feed port 2, and move the heated gears slightly forward in turn, so that they move completely to the third guide rail 6. It should be noted that the thickness of the feed port 2 and the discharge port 3 is less than one-third of the radius of the gear. Therefore, when the gear moves from the first guide rail 4 to the second guide rail 5 and from the second guide rail 5 to the third guide rail 6, the gear will not fall off the guide rail and deviate.

[0027] The length of the third guide rail 6 is greater than that of the second guide rail 5 , so that all gears on the second guide rail 5 can be completely moved to the third guide rail 6 .

[0028] Since the second guide rail 5 is located in the heating furnace 1, the third guide rail 6 will contact the high-temperature gear after quenching, so the second guide rail 5 and the third guide rail 6 can use high-temperature resistant alloy steel to ensure that the second guide rail 5 and the third guide rail 6 can work normally at high temperature (i.e., quenching temperature) without deformation.

[0029] A slider 9 is provided at one end of the third guide rail 6, and a vertical chute 10 is provided at the outer wall of the heating furnace 1 corresponding to the discharge port 3, and the slider 9 is slidably connected with the chute 10. The chute 10 is provided on the metal outer layer of the outer wall of the heating furnace 1, which will not damage the inner layer and the middle layer, thereby ensuring the thermal insulation of the heating furnace 1. Specifically, the chute 10 is a T-shaped chute with a T-shaped cross-section, and the slider 9 is a T-shaped slider with a T-shaped cross-section. The slider 9 can only move up and down in the chute 10, and the third guide rail 6 can move downward and move into the quenching pool through the cooperation of the slider 9 and the chute 10.

[0030] A connecting block 11 is provided at the other end of the two third guide rails 6, a driving motor 12 is provided above the quenching pool 7, a driving shaft of the driving motor 12 is provided with a vertical screw 13, the other end of the screw 13 passes through the connecting block 11 and is rotatably connected to the bottom of the quenching pool 7, and the connecting block 11 is threadedly adapted to the screw 13. The automatic movement of the third guide rail 6 can be achieved by the driving motor 12 and the screw 13. The forward rotation of the driving motor 12 drives the screw 13 to rotate forward, so that the third guide rail 6 moves downward to the quenching pool 7, and the reverse rotation of the driving motor 12 drives the screw 13 to reverse, so that the third guide rail 6 moves upward to be flush with the discharge port 3.

[0031] A liquid outlet 14 is provided at the lower part of the quenching pool 7, and a valve is also installed at the liquid outlet 14. Since the quenching pool 7 is arranged next to the heating furnace 1, when the heating furnace 1 works for a long time, the temperature of the outer wall of the heating furnace 1 increases, and the temperature of the quenching liquid in the quenching pool 7 may increase, affecting the gear quenching effect. Therefore, each time the gears on the third guide rail 6 are quenched, the quenching liquid in the quenching pool 7 can be discharged through the liquid outlet 14 and collected through a special collection box before waiting for the next group of gears to be heated to the specified temperature. After that, after the next group of gears is heated to the specified temperature, the quenching liquid is poured back into the quenching pool 7 to complete the quenching of the gears. Preferably, the quenching liquid can be poured into the quenching pool 7 from above the quenching pool 7, and a liquid inlet can be provided at the upper part of the quenching pool 7 to realize the pouring of the quenching liquid through the liquid inlet.

[0032] Since the quenching of each set of gears requires multiple discharges and pouring of quenching liquid, the quenching liquid in the quenching pool should not be too much, and it is sufficient to immerse the gears by 2-4 cm. Moreover, since the gears are placed flat on the third guide rail 6, the thickness of the gears required in the automotive field is also relatively low. Therefore, the overall depth of the quenching liquid in the quenching pool 7 does not exceed 10 cm. The low depth facilitates the rapid pouring and discharge of the quenching liquid, thereby improving the quenching efficiency.

[0033] A support seat 15 is provided at one end of the first guide rail 4 away from the heating furnace 1, and a pusher 16 for pushing the gear to move is installed on the support seat 15. The pusher 16 is a hydraulic cylinder, and a push plate 17 is provided on its telescopic shaft. When there are many gears on the guide rail, it may be difficult to push the whole gear manually, so the hydraulic cylinder and the push plate 17 provide power for pushing the gear to move as a whole.

[0034] The third guide rail 6 is provided with a stopper 18 near the screw rod 13. The stopper 18 is made of high temperature resistant alloy steel. When the gear on the third guide rail 6 is pushed to move, the stopper 18 can prevent the heated gear from contacting the screw rod 13, thereby preventing the thread on the screw rod 13 from being damaged by the heated gear.

[0035] The working principle of this utility model:

[0036] When in use, the gears are placed on the first guide rail 4 in sequence. During the process of placing the gears in sequence, the gears at the front end are pushed forward in sequence by the gears at the rear end. When the second guide rail 5 is full of gears, the placement of the gears on the first guide rail 4 is stopped, and the gears on the second guide rail 5 are heated in the heating furnace 1. After the gears are heated to the specified temperature, the gears continue to be placed on the first guide rail 4, and the pushing member 16 is used to push the gears as a whole to push the gears on the second guide rail 5 onto the third guide rail 6, and the next group of gears to be heated are pushed onto the second guide rail 5, and then quenching liquid is poured into the quenching pool 7, and the drive motor 12 is started to drive the third guide rail 6 and the gears to move downward to the quenching pool 7 for quenching. After quenching is completed, the third guide rail 6 is moved up to remove the gears, and the quenching liquid is taken out from the quenching pool 7 to realize uninterrupted batch quenching treatment of the gears. It should be noted that during the gear heating process, heat shields can be installed at the feed port 2 and the discharge port 3. The heat shields are made of insulation material, such as aluminum silicate fiber, and are placed at the feed port 2 and the discharge port 3. Preferably, the heat shields can also be fixed to the outer layer of the outer wall of the heating furnace 1 by means of screws. When the gear heating is completed, the heat shields can be removed to facilitate the normal movement of the gears. The heat shields can effectively prevent the heat in the heating furnace 1 from overflowing from the feed port 2 and the discharge port 3, thereby affecting the gears that have not been heated near the feed port 2.

[0037] Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. Changes and improvements to the utility model will be possible without exceeding the concept and scope specified in the attached claims. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A gear quenching device, characterized in that: The heating furnace (1) comprises a heating furnace (1), wherein a feed port (2) and a discharge port (3) are respectively provided on the left and right sides of the heating furnace (1), a first guide rail (4) is provided on the outer wall of the heating furnace (1) corresponding to the feed port (2), a second guide rail (5) is provided inside the heating furnace (1), a third guide rail (6) is slidably connected to the outer wall of the heating furnace (1) corresponding to the discharge port (3), and a quenching pool (7) is connected to the outer wall of the heating furnace (1), and a heater (8) is provided on the inner wall of the heating furnace (1).

2. A gear quenching device according to claim 1, characterized in that: The first guide rail (4), the second guide rail (5) and the third guide rail (6) are each provided with two opposite ones, and the cross-sectional shape of the guide rails is all L-shaped.

3. A gear quenching device according to claim 2, characterized in that: A slider (9) is provided at one end of the third guide rail (6), and a vertical slide groove (10) is provided at the outer wall of the heating furnace (1) corresponding to the discharge port (3), and the slider (9) is slidably connected to the slide groove (10).

4. A gear quenching device according to claim 3, characterized in that: A connecting block (11) is provided at the other end of the two third guide rails (6), a driving motor (12) is provided above the quenching pool (7), a driving shaft of the driving motor (12) is provided with a vertical screw rod (13), the other end of the screw rod (13) passes through the connecting block (11) and is rotatably connected to the bottom of the quenching pool (7), and the connecting block (11) and the screw rod (13) are threadably matched.

5. A gear quenching device according to claim 4, characterized in that: A liquid outlet (14) is provided at the lower portion of the quenching tank (7).

6. A gear quenching device according to claim 5, characterized in that: A support seat (15) is provided at one end of the first guide rail (4) away from the heating furnace (1), and a pushing member (16) for pushing the gear to move is installed on the support seat (15).

7. A gear quenching device according to claim 6, characterized in that: The pushing member (16) is a hydraulic cylinder, and a pushing plate (17) is provided on its telescopic shaft.

8. A gear quenching device according to claim 7, characterized in that: The third guide rail (6) is provided with a limit block (18) near the screw rod (13).

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