Medium-frequency quenching device for supporting shaft of drive axle of mining truck

Abstract

The utility model discloses a medium-frequency quenching device for a supporting shaft of a drive axle of a mining truck. The medium-frequency quenching device comprises a shell, a supporting seat and a supporting shaft body, wherein the supporting seat is connected with the inner side of the middle of the shell in a clamping manner; a limiting structure is arranged on the upper side of the supporting shaft body, the limiting structure comprises an electric telescopic rod, a bearing seat, a worm, a first motor, a worm gear and a limiting strip, and the electric telescopic rod is fixedly installed on the lower side of the middle of the upper end of the shell; and a sealing rotating structure is arranged below the supporting seat and comprises a sealing gasket and a second motor. According to the medium-frequency quenching device for the supporting shaft of the drive axle of the mining truck, the supporting shaft body can be conveniently limited, it is guaranteed that the gap between the supporting shaft body and the heating inductor is uniform, the supporting shaft body in quenching can be conveniently rotated, quenching is uniform, spraying cooling can be conveniently conducted on the supporting shaft body, and cooling liquid can be conveniently recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining truck drive axle bearing shaft medium frequency quenching technical field, concretely to a kind of medium frequency quenching device of mining truck drive axle bearing shaft. BACKGROUND

[0002] Mining truck drive axle bearing shaft is the important component of mining truck drive axle, it supports the overall structure of drive axle, and bears various forces and vibrations when vehicle runs, in its production and processing, quenching device is needed to quench, and quenching technology is the metal heat treatment process that metal workpiece is heated to certain appropriate temperature and keeps a period of time, immediately immersed in quenching medium and rapidly cooled, which can improve the hardness and wear resistance of metal workpiece.

[0003] As the Chinese utility model patent with the authorization announcement No.CN216998511U discloses a medium frequency quenching mechanism, including support, quenching device is fixedly connected in the support, the lower part of quenching device is provided with lower ejector, the upper part is provided with upper ejector, slidingly connected with moving plate at the position of one side of quenching device in the support, the side of moving plate close to quenching device is fixedly installed with first drive device for driving lower ejector to rotate and adjusting device for adjusting the height of upper ejector;The utility model is reasonably designed, metal part replacement is more convenient, manual assistance is reduced, the labor intensity of staff is reduced, and the work efficiency is improved;Ensure that the shaft metal part can rotate circumferentially in the quenching process, so that the surface quenching hardness is more uniform;The end face of the step shaft different diameter shaft section junction in the quenching process will not be excessively heated, and quenching defects such as overheating, overburning, deformation or cracking are avoided.

[0004] As the Chinese utility model patent with the authorization announcement No.CN213924942U discloses a kind of high stability quenching device for automobile half shaft, belongs to half shaft production equipment technical field.The device includes frame and its quenching chamber on the frame, medium frequency heating structure and water spraying structure, medium frequency heating structure includes heating inductor, and water spraying structure includes water sprayer;Heating inductor and water sprayer are fixed on the upper part of rear side in quenching chamber up and down and side by side, left side or right side in quenching chamber is equipped with the lifting slide capable of moving up and down, frame is equipped with lifting structure, the lower part of lifting slide and the lower part of water sprayer are equipped with rotating support, rotating support is equipped with half shaft autorotation drive structure on, and half shaft autorotation drive structure includes rotating support and rotating motor;Rotating support is horizontally arranged, and its upper side is equipped with ring groove, and it is located below water sprayer;The upper part of lifting slide is equipped with centre bit support, and centre bit support is equipped with upper centre bit along vertical direction on and located above heating inductor, and upper centre bit is coaxially arranged with ring groove and can move downwards and press half shaft on rotating support.

[0005] However, existing medium-frequency quenching devices for drive axle support shafts of mining trucks generally cannot guarantee a uniform gap between the support shaft body and the heating inductor during use, and it is not convenient to rotate the support shaft body during quenching. The quenching uniformity is limited, and it is not convenient to recycle the spray cooling liquid. Therefore, we propose a medium-frequency quenching device for drive axle support shafts of mining trucks to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a medium-frequency quenching device for the support shaft of a mining truck drive axle, so as to solve the problems mentioned in the background art. In the process of use, it is generally difficult to ensure that the gap between the support shaft body and the heating inductor is uniform, it is not convenient to rotate the support shaft body during quenching, the quenching uniformity is limited, and it is not convenient to recycle the spray cooling liquid.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a medium-frequency quenching device for a drive axle support shaft of a mining truck, comprising: a housing, a support seat engaged with the inner side of the housing, and a support shaft body fitted on the support seat;

[0008] Also includes:

[0009] The upper side of the support shaft body is provided with a limiting structure, which includes an electric telescopic rod, a bearing seat, a worm gear, a first motor, a worm wheel and a limiting strip. The electric telescopic rod is fixedly installed on the lower side of the upper middle part of the housing, and a controller is embedded in the inner side of the upper rear end of the housing.

[0010] A sealing rotation structure is provided under the support base, wherein the sealing rotation structure includes a sealing gasket and a second motor, and the second motor is closely attached to the lower side of the outer end of the support base.

[0011] The lower outer side of the support base is provided with a quenching and cooling structure, which includes a heating sensor, a water spray ring, a movable plate, an adjusting rod, a third motor, a reflux hole, a pump, and a connecting pipe. The heating sensor is nested on the lower outer side of the support base, and the water spray ring is located on the lower outer side of the heating sensor.

[0012] Preferably, the electric telescopic rod is fixedly connected to a bearing seat located above the support base, and a worm gear is engaged with the inner side of the middle part of the bearing seat. A first motor is connected to the worm gear via a coupling, and the first motor is installed on the inner side of the lower end of the bearing seat.

[0013] Preferably, the worm gear is externally meshed with a worm wheel arranged symmetrically at the center, and the worm wheel is rotatably connected to the bearing seat. Furthermore, a limiting strip protruding from the bearing seat is fixedly connected to the worm wheel, and the lower outer end of the limiting strip is snapped and attached to the support shaft body.

[0014] Preferably, the second motor is glued and fixed inside the housing, and the second motor installed inside the housing is connected to the support base via a coupling. The centers of the support base, the support shaft body, the bearing base, the heating sensor and the water spray ring are on the same vertical line.

[0015] Preferably, a movable plate that fits snugly against the housing is fixedly connected to the heating sensor and the water spray ring, and an adjusting rod threadedly connected to the movable plate passes through the movable plate. A third motor is connected to the adjusting rod via a coupling, and the third motor is fixedly connected to the housing via a clamp and screws.

[0016] Preferably, the support base has symmetrically arranged return holes in the housing on its outer lower side, and a pump is installed on the inner side of the lower end of the housing by screws, and the pump is connected to a connecting pipe that is connected to the water spray ring by external thread.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the medium frequency quenching device for the drive axle support shaft of the mining truck is convenient for limiting the support shaft body, ensuring that the gap between the support shaft body and the heating inductor is uniform, facilitating the rotation of the support shaft body during quenching to make the quenching uniform, and facilitating the spray cooling of the support shaft body and the recycling of coolant.

[0018] 1. The device comprises a housing, a support base, a support shaft body, and an electric telescopic rod. The support shaft body is attached to the support base, which is engaged within the housing. The electric telescopic rod is fixedly installed on the lower side of the upper middle part of the housing. A bearing seat located on the support shaft body is fixedly connected to the lower part of the electric telescopic rod. A worm gear with a first motor mounted on its lower side is engaged with the inner side of the middle part of the bearing seat. A worm wheel that rotates with the bearing seat is meshed with the worm gear. The worm wheel is symmetrically arranged about the center of the bearing seat. A limiting strip that snaps and fits against the support shaft body is fixedly connected to the outside of the worm wheel. This facilitates the limitation of the support shaft body and ensures a uniform gap between the support shaft body and the heating sensor.

[0019] 2. It is equipped with a support base, a support shaft body, a second motor and a heating sensor. Since the second motor is connected to the support base via a coupling, and the heating sensor is nested outside the support shaft body, and a movable plate that fits into the housing is fixedly connected in front of the heating sensor, and an adjusting rod for mounting a third motor on the upper side is connected to the movable plate by an internal thread, it is convenient to rotate the support shaft body during quenching to make it quenched evenly.

[0020] 3. It is equipped with a heating sensor, a water spray ring, a movable plate, and a return hole. Since the water spray ring is fixed to the movable plate on the lower outer side of the heating sensor, and the water spray ring is connected to the housing through a pump and a connecting pipe, and the housing has a return hole symmetrically arranged with the center of the support base, it is convenient to spray the support shaft body for cooling and to recover and recycle the coolant. Attached Figure Description

[0021] Figure 1 This is a frontal cross-sectional view of the present invention.

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;

[0024] Figure 4 This is a side view sectional structural diagram of the present invention;

[0025] Figure 5 This is a top view cross-sectional structural diagram of the present invention.

[0026] In the diagram: 1. Housing; 2. Support base; 3. Support shaft body; 4. Electric telescopic rod; 5. Bearing base; 6. Worm gear; 7. First motor; 8. Worm wheel; 9. Limiting strip; 10. Controller; 11. Sealing gasket; 12. Second motor; 13. Heating sensor; 14. Water spray ring; 15. Movable plate; 16. Adjusting rod; 17. Third motor; 18. Return hole; 19. Pump; 20. Connecting pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5This utility model provides a technical solution: a medium-frequency quenching device for a drive axle support shaft of a mining truck, comprising a housing 1, a support base 2, a support shaft body 3, an electric telescopic rod 4, a bearing seat 5, a worm gear 6, a first motor 7, a worm wheel 8, a limiting strip 9, a controller 10, a sealing gasket 11, a second motor 12, a heating inductor 13, a water spray ring 14, a movable plate 15, an adjusting rod 16, a third motor 17, a return hole 18, a pump 19, and a connecting pipe 20. The support base 2 and the support shaft body 3 are engaged and connected to the inner side of the housing 1. A limiting structure is provided on the upper side of the support shaft body 3, wherein the limiting structure includes the electric telescopic rod 4, the bearing seat 5, the worm gear 6, the first motor 7, the worm wheel 8, a limiting strip 9, a controller 10, a sealing gasket 11, a second motor 12, a heating inductor 13, a water spray ring 14, a movable plate 15, an adjusting rod 16, a third motor 17, a return hole 18, a pump 19, and a connecting pipe 20. Wheel 8 and limiting strip 9, and electric telescopic rod 4 are fixedly installed on the lower side of the upper middle part of the housing 1, and controller 10 is embedded in the inner side of the upper rear end of the housing 1. A sealing rotation structure is provided under the support base 2, wherein the sealing rotation structure includes a sealing gasket 11 and a second motor 12, and the second motor 12 is tightly attached to the lower side of the outer end of the support base 2. A quenching and cooling structure is provided on the lower outer side of the support base 2, wherein the quenching and cooling structure includes a heating sensor 13, a water spray ring 14, a movable plate 15, an adjusting rod 16, a third motor 17, a return hole 18, a pump 19 and a connecting pipe 20, and the heating sensor 13 is nested on the outer side of the lower end of the support base 2, and the water spray ring 14 is provided on the lower outer side of the heating sensor 13. Specific Implementation Example 1

[0030] To address the problems in existing technologies, such as difficulty in ensuring uniform gap between the support shaft body 3 and the heating inductor 13, inconvenience in rotating the support shaft body 3 during quenching, and limited quenching uniformity, this embodiment employs the following technical solution: Figure 1 , Figure 2 and Figure 4First, the support shaft body 3 can be placed against the upper surface of the support seat 2 inside the housing 1. Then, the controller 10, which is embedded in the inner side of the upper rear end of the housing 1, can control the operation of the electric telescopic rod 4, which is fixedly installed on the lower side of the middle of the upper end of the housing 1. This causes the electric telescopic rod 4 to drive the bearing seat 5, which is fixedly connected below it, to descend until the bearing seat 5 is against the support shaft body 3. Then, the controller 10 can control the first motor 7, which is installed on the inner side of the lower end of the bearing seat 5, to operate. This causes the first motor 7 to drive the worm gear 6, which is connected to the coupling on its upper part, to rotate under the engagement limit of the bearing seat 5. Since the worm gear 6 is externally meshed with a worm wheel 8, which is symmetrically arranged with the center of the bearing seat 5, the worm wheel 8 and the worm wheel 8 are engaged with the worm wheel 8. The bearing seat 5 is rotatably connected, and the worm wheel 8 is fixedly connected to a limiting strip 9 protruding from the bearing seat 5. Therefore, through the operation of the first motor 7, the worm 6 drives the worm wheel 8 to rotate under the limitation of the bearing seat 5, so that the worm wheel 8 drives the limiting strip 9 to rotate until the lower outer end of the limiting strip 9 is snapped against the upper outer side of the support shaft body 3, thereby limiting the support shaft body 3 and making the center of the support shaft body 3, the support seat 2, and the bearing seat 5 in the same vertical line. This makes it easier to make the center of the support shaft body 3 and the heating sensor 13 and the water spray ring 14 on its lower outer side in the same vertical line, thereby ensuring that the gap between the support shaft body 3 and the heating sensor 13 is uniform.

[0031] like Figure 1 , Figure 3 , Figure 4 and Figure 5 After defining the support shaft body 3, the controller 10 can control the heating inductor 13 to quench the support shaft body 3. The controller 10 can also comprehensively adjust and set parameters such as the heating temperature, time, and induction frequency of the heating inductor 13 to achieve the designed medium-frequency quenching technical requirements. The controller 10 can also control the third motor 17, which is fixed to the rear front end of the housing 1 by clamps and screws, to rotate the adjusting rod 16 connected to its lower coupling. Since the heating inductor 13 is fixedly connected to the front and fitted with the housing 1, the heating inductor 13 can be quenched. The movable plate 15 has an adjusting rod 16 threaded through it. Therefore, through the operation of the third motor 17, the adjusting rod 16 can drive the movable plate 15 to rise and fall under the locking limit of the housing 1. This facilitates the movable plate 15 to drive the heating inductor 13 to rise and fall to quench the support shaft body 3. The controller 10 can control the second motor 12 connected to the support base 2 via the coupling to operate, so that the support base 2 drives the support shaft body 3, which is limited by the bearing seat 5 and the limiting strip 9, to rotate. This facilitates the rotation of the support shaft body 3 during quenching, making the quenching uniform. Specific Implementation Example 2

[0033] To address the problem of inconvenience in recycling and reusing the cooling fluid in existing technologies, this embodiment employs the following technical solution: Figure 1 , Figure 4 and Figure 5 During the quenching process of the support shaft body 3, the pump 19 installed by screws inside the housing 1 can be controlled by the controller 10. Since the external thread of the pump 19 is connected to the connecting pipe 20 that passes through the housing 1, and the connecting pipe 20 is connected to the water spray ring 14 set on the lower side of the heating inductor 13, and the water spray ring 14 is fixed to the lower rear side of the movable plate 15, the operation of the pump 19 facilitates the flow of coolant from the housing 1 to the water spray ring 14 through the connecting pipe 20, and the water spray ring 14 sprays it onto the quenched support shaft body 3, thereby achieving the purpose of spraying and cooling the support shaft body 3. Furthermore, the return holes 18 are symmetrically arranged on the lower outer side of the support base 2 and opened in the housing 1, so as to facilitate the recovery of coolant through the return holes 18, so as to recycle the coolant and avoid waste of resources. All the electrical components mentioned above are existing technologies and will not be described in detail here.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medium frequency quenching device for a drive axle support shaft of a mining truck, comprising: The shell (1), the support seat (2) clamped and connected in the middle of the shell (1) and the support shaft body (3) pasted on the support seat (2); It is characterized in that further comprising: The upper side of the support shaft body (3) is provided with a limiting structure, wherein the limiting structure comprises an electric telescopic rod (4), a bearing seat (5), a worm (6), a first motor (7), a worm wheel (8) and a limiting strip (9), and the electric telescopic rod (4) is fixedly installed on the lower side of the middle of the upper end of the shell (1), and the controller (10) is embeddedly installed on the inner side of the rear upper end of the shell (1); The lower side of the support seat (2) is provided with a sealing rotation structure, wherein the sealing rotation structure comprises a sealing gasket (11) and a second motor (12), and the second motor (12) is closely attached to the outer end of the lower side of the support seat (2); The outer lower side of the support seat (2) is provided with a quenching cooling structure, wherein the quenching cooling structure comprises a heating inductor (13), a water spraying ring (14), a movable plate (15), an adjusting rod (16), a third motor (17), a backflow hole (18), a pump (19) and a connecting pipe (20), and the heating inductor (13) is nested on the outer lower side of the lower end of the support seat (2), and the water spraying ring (14) is arranged on the outer lower side of the heating inductor (13).

2. The mine truck drive axle support shaft medium frequency quenching device according to claim 1, characterized in that: The electric telescopic rod (4) is fixedly connected with the bearing seat (5) located above the support seat (2), the middle inner side of the bearing seat (5) is clamped and connected with the worm (6), the lower end of the bearing seat (5) is rotatably connected with the first motor (7) through a shaft coupling, and the first motor (7) is installed on the inner side of the lower end of the bearing seat (5).

3. The mine truck drive axle support shaft medium frequency quenching device according to claim 1, characterized in that: The outer side of the worm (6) is rotatably connected with the worm wheel (8) arranged in a central symmetry, the worm wheel (8) is rotatably connected with the bearing seat (5), the outer side of the worm wheel (8) is fixedly connected with the limiting strip (9) protruding out of the bearing seat (5), and the outer lower end of the limiting strip (9) is clamped and attached to the outer side of the support shaft body (3).

4. The mine truck drive axle support shaft medium frequency quenching device according to claim 1, characterized in that: The second motor (12) is fixedly attached in the shell (1), the lower end of the support seat (2) is rotatably connected with the second motor (12) installed in the shell (1) through a shaft coupling, and the centers of the support seat (2), the support shaft body (3), the bearing seat (5), the heating inductor (13) and the water spraying ring (14) are on the same vertical line.

5. The mine truck drive axle support shaft medium frequency quenching device according to claim 1, characterized in that: The front end of the heating inductor (13) and the water spraying ring (14) is fixedly connected with the movable plate (15) attached to the shell (1), the movable plate (15) is penetrated by the adjusting rod (16) screw-connected therewith, the third motor (17) is rotatably connected with the adjusting rod (16) through a shaft coupling, and the third motor (17) is fixedly connected with the shell (1) through a clamp and a screw.

6. The mine truck drive axle support shaft medium frequency quenching device according to claim 1, characterized in that: The outer lower side of the support seat (2) is centrally and symmetrically provided with the backflow hole (18) arranged in the shell (1), the lower end of the shell (1) is screw-connected with the pump (19), and the outer side of the pump (19) is screw-connected with the connecting pipe (20) communicated with the water spraying ring (14).

Images