A quenching device for production and processing of slewing bearings

Abstract

This application relates to the field of induction hardening equipment technology, and discloses a hardening device for slewing bearing production and processing, including a support frame. A linkage component is fixedly installed at the other end of the support frame. The linkage component includes an outer shell fixedly installed on the side end face of the induction hardening device. A set of first partial annular grooves is formed on the left side of the inner wall of the outer shell, and a third partial annular groove, which is not connected to the first partial annular grooves, is formed on the right side of the inner wall of the outer shell. A first connecting end, connected to the first partial annular grooves in its inner cavity, is provided at the bottom of the outer surface of the outer shell. The hardening device for slewing bearing production and processing provided by this application, with its linkage component and its structure, can maintain the temperature of the coolant sprayed in the cooling nozzle within a controllable range when mixing new and old coolant, effectively avoiding the problem that the cooling rate of the circulating coolant on the high-temperature slewing bearing tooth surface decreases due to excessively high temperature.

Description

Technical Field

[0001] The present application relates to the technical field of induction hardening devices, and in particular to a hardening device for the production and processing of slewing bearings. Background Art

[0002] Quenching is the most widely used process in heat treatment, and combined with tempering at different temperatures, it can greatly improve the rigidity, hardness, wear resistance and toughness of the material, thereby meeting the different use requirements of various mechanical parts and tools;

[0003] Among them, the slewing bearing, as a key component of engineering machinery, is a large bearing component that can withstand a large comprehensive load and has a very high usage in the current market. In order to extend the service life of the slewing bearing and improve its overall physical properties, it is often necessary to use a quenching sensor to quench the slewing bearing;

[0004] However, when the existing quenching sensor performs quenching treatment on the tooth surface of the slewing bearing, a large amount of coolant will be generated as the tooth surface is heated and cooled, and a cycle can be formed to reuse the coolant, thereby reducing the waste of resources. However, as the coolant is circulated, its temperature will gradually increase. When spraying and cooling the high-temperature tooth surface of the slewing bearing, the temperature drop rate will decrease as the coolant temperature increases. In addition, due to the complexity and uncertainty of the processing environment, the circulating coolant will inevitably adhere to some impurities such as dust and metal debris, and will have impact contact with the high-temperature tooth surface of the slewing bearing during the circulation process, thereby seriously affecting the quenching quality of the slewing bearing tooth surface, and the stability and reliability are poor.

[0005] Therefore, there is an urgent need for a quenching device for a slewing bearing to solve the defects of the above-mentioned existing quenching sensor during actual use. Summary of the invention

[0006] The present application proposes a quenching device for the production and processing of slewing bearings, which has the advantage of balancing the temperature of the circulating coolant and filtering it to prevent the dust, metal debris and other impurities contained therein from impacting the high-temperature tooth surface of the slewing bearing, and having a high quenching quality. It is used to solve the problem that as the coolant is circulated, its temperature gradually increases, and when spraying and cooling the high-temperature tooth surface of the slewing bearing, its temperature decrease rate decreases with the increase of the coolant temperature, resulting in poor quenching quality for the slewing bearing tooth surface.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a quenching device for slewing bearing production and processing, comprising a bracket, a hydraulic cylinder group is fixedly installed at one end of the bracket, and an induction quenching device is provided at the bottom end of the movable shaft of the hydraulic cylinder group, a group of cooling nozzles relatively lower than the induction quenching device are fixedly installed on both sides of the induction quenching device, a linkage component is fixedly installed at the other end of the bracket, and the linkage component includes an outer shell fixedly installed on the side end surface of the induction quenching device, and the inner movable sleeve of the outer shell is connected with a limit connecting rod fixedly connected to the bracket with the top of the outer surface;

[0008] A group of first partial annular grooves are provided on the left side of the inner wall of the outer shell, and a third partial annular groove which is not connected to the first partial annular grooves is provided on the right side of the inner wall of the outer shell, a first connecting end connected to the first partial annular grooves in the inner cavity of the outer shell is provided at the bottom of the outer surface of the outer shell, and the other end of the first connecting end is connected to the external new coolant delivery system, and a second connecting end connected to the inner cavity of the outer shell is provided at the top of the outer surface of the outer shell, and the other end of the second connecting end is connected to the cooling nozzle;

[0009] A connecting slot is provided at the top of the limiting connecting rod, the top of which extends to the top of the limiting connecting rod and is connected to the external old coolant circulation system, while the bottom of the connecting slot extends to the middle of the outer surface of the limiting connecting rod and is connected to the third local annular groove.

[0010] Furthermore, the limit connecting rod is divided into two sections, an upper section and an lower section, which are connected via a movable flow limiting collar. A heat expansion member is movably sleeved on the outer surface of the flow limiting collar to form a transmission connection with the bottom end of the upper limit connecting rod, and a guide block is provided at the bottom of the inner cavity of the upper limit connecting rod. The flow limiting collar is located at the top of the inner cavity of the outer shell and is in contact with the mixed coolant.

[0011] Furthermore, a group of grooves are respectively provided on the left and right sides of the middle part of the limiting connecting rod, and filtering mesh holes are provided in the grooves to penetrate the left and right end surfaces thereof.

[0012] Furthermore, a group of second partial annular grooves are opened on the left side of the inner wall of the shell and located outside the first partial annular groove, and a limiting pressure block with an outer diameter the same as the inner diameter of the first partial annular groove is fixedly installed on the left side of the top of the outer surface of the limiting connecting rod.

[0013] Furthermore, the external old coolant circulation system forms a feedback connection with the upward movement of the induction quenching device, and when the induction quenching device moves upward, the old coolant circulation system is triggered, and when the induction quenching device moves downward, the old coolant circulation system is in a closed state, and the new coolant delivery system is in a normally open state.

[0014] Furthermore, a sewage outlet connected to the inner cavity of the outer shell is provided at the bottom of the outer surface of the outer shell and on one side of the third partial annular groove, and the sewage outlet is located below the third partial annular groove.

[0015] The present invention application has the following technical effects:

[0016] The present application provides a quenching device for the production and processing of slewing bearings. For the arrangement of linkage components and structures thereon, the temperature of the coolant sprayed in the cooling nozzle can be kept within a controllable range by mixing new and old coolants, thereby effectively avoiding the problem that the cooling rate of the high-temperature slewing bearing tooth surface caused by the circulating coolant is reduced due to excessively high temperature. At the same time, the old coolant can be filtered by the filter mesh to prevent dust, metal debris and other impurities contained therein from impacting the high-temperature tooth surface of the slewing bearing. When the induction quenching device is moved to a certain height to complete the quenching operation of a certain tooth surface of the slewing bearing, the backwashing action can be automatically triggered to backwash the filter mesh with new coolant, thereby effectively preventing the problem of clogging during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0018] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a front view of the structure of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the linkage component of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the outer shell of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the limiting connecting rod of the present invention.

[0024] In the figure: 1, bracket; 2, hydraulic cylinder group; 3, induction quenching device; 4, cooling nozzle; 5, linkage component; 6, outer shell; 7, limit connecting rod; 8, drain outlet; 9, first connecting end; 10, second connecting end; 11, flow limiting collar; 12, thermal expansion member; 13, guide block; 14, first partial annular groove; 15, second partial annular groove; 16, third partial annular groove; 17, filter mesh; 18, limit pressure block; 19, connecting slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] like Figure 1 , Figure 2 As shown, a quenching device for slewing bearing production and processing includes a bracket 1 fixedly mounted on a mechanical arm, a hydraulic cylinder group 2 connected to an external hydraulic pump station is fixedly mounted on one end of the bracket 1, and an induction quenching device 3 is provided at the bottom end of the movable shaft of the hydraulic cylinder group 2, so that when the hydraulic cylinder group 2 is triggered, the induction quenching device 3 can be driven to move up and down along the tooth surface of the slewing bearing to perform a quenching operation on it, and a group of cooling nozzles 4 relatively lower than the induction quenching device 3 and connected to an external coolant system are fixedly mounted on both sides of the induction quenching device 3, respectively, and the coolant system includes a new coolant delivery system and an old coolant circulation system, and then the coolant sprayed in the cooling nozzle 4 can be used to quickly cool the tooth surface in a high temperature state to complete the quenching operation of the slewing bearing tooth surface, and a linkage component 5 is fixedly mounted on the other end of the bracket 1, as shown in FIG. Figure 3 As shown, the linkage component 5 includes an outer shell 6 fixedly mounted on the side end surface of the induction hardening device 3, so that the outer shell 6 and the mechanism thereon can move with the movement of the induction hardening device 3, and the outer shell 6 is internally movably sleeved with a limit rod 7 fixedly connected to the bracket 1 at the top of the outer surface;

[0027] like Figure 4 As shown, a group of first partial annular grooves 14 are provided on the left side of the inner wall of the outer shell 6, and a third partial annular groove 16 which is not connected to the first partial annular groove 14 is provided on the right side of the inner wall of the outer shell 6, a first connecting end 9 which is connected to the first partial annular groove 14 in its inner cavity is provided at the bottom of the outer surface of the outer shell 6, and the other end of the first connecting end 9 is connected to the external new coolant delivery system, and a second connecting end 10 which is connected to the inner cavity is provided at the top of the outer surface of the outer shell 6, and the other end of the second connecting end 10 is connected to the cooling nozzle 4;

[0028] like Figure 5 As shown, a connecting slot 19 is provided at the top of the limiting connecting rod 7, the top of the connecting slot 19 extends to the top of the limiting connecting rod 7 and is connected to the external old coolant circulation system, and the bottom of the connecting slot 19 extends to the middle of the outer surface of the limiting connecting rod 7 and is connected to the third local annular groove 16;

[0029] Furthermore, during operation, the old coolant with a higher temperature in the connecting slot 19 and the new coolant with a lower temperature in the first connecting end 9 can be mixed together in the inner cavity of the outer shell 6 and transported to the cooling nozzle 4 through the second connecting end 10, so that it can maintain a lower temperature to cool the slewing bearing tooth surface in a high temperature state.

[0030] like Figure 3 , Figure 5 As shown, in the present technical scheme, the limit link 7 is divided into two sections, and the upper and lower sections are connected by a movable flow limiting ring 11. The outer surface of the flow limiting ring 11 is movably sleeved with a heat expansion member 12 to form a transmission connection with the bottom end of the upper limit link 7, and a guide block 13 is provided at the bottom of the inner cavity of the upper limit link 7. The flow limiting ring 11 is located at the top of the inner cavity of the outer shell 6 and contacts with the mixed coolant. Then, the thermal expansion and contraction changes of the heat expansion member 12 force the flow limiting ring 11 to move upward or downward, adjust the flow gap between it and the guide block 13, and regulate the temperature of the mixed coolant by changing the delivery amount of the old coolant with a higher temperature, so that its temperature is kept within a controllable range.

[0031] like Figure 5 As shown, in the present technical solution, a group of grooves are respectively provided on the left and right sides of the middle of the limiting connecting rod 7, and a filter mesh 17 is provided in the groove that passes through the left and right end surfaces thereof and is used to filter dust and metal debris in the old coolant.

[0032] like Figure 4 , Figure 5 As shown, in the present technical solution, a group of second local annular grooves 15 are opened on the left side of the inner wall of the outer shell 6 and located on the periphery of the first local annular groove 14, and a limiting pressure block 18 with an outer diameter the same as the inner diameter of the first local annular groove 14 is fixedly installed on the left side of the top of the outer surface of the limiting connecting rod 7.

[0033] In the technical solution, the external old coolant circulation system forms a feedback connection with the upward movement of the induction quenching device 3, and when the induction quenching device 3 moves upward, the old coolant circulation system is triggered, and when the induction quenching device 3 moves downward, the old coolant circulation system is in a closed state, and the new coolant delivery system is in a normally open state;

[0034] Then, when the induction quenching device 3 is moved to a certain height and the quenching of a tooth surface of the slewing bearing is completed, when the outer shell 6 is moved to a specific height along with the induction quenching device 3, the limiting pressure block 18 can block the water outlet on the first connecting end 9 and block the delivery action of the coolant to the second connecting end 10, while the lower water outlet of the first connecting end 9 continues to work, so that the new coolant can backwash the filter mesh 17 on the limit connecting rod 7 to prevent it from being blocked.

[0035] like Figure 3 , Figure 4 As shown, in the present technical solution, a drain port 8 connected to the inner cavity of the outer shell 6 is provided at the bottom of the outer surface of the outer shell 6 and on one side of the third local annular groove 16, and the drain port 8 is located below the third local annular groove 16, so that the coolant will not leak from the drain port 8 in the initial stage. As the outer shell 6 moves upward and is in the backwashing stage, the drain port 8 is connected to the groove on the limit connecting rod 7 to discharge the dust and metal debris filtered out of the filter mesh 17 during backwashing.

Claims

1. A quenching device for slewing bearing production and processing, comprising a bracket (1), a hydraulic cylinder group (2) is fixedly mounted on one end of the bracket (1), and an induction quenching device (3) is provided at the bottom end of the movable shaft of the hydraulic cylinder group (2), a group of cooling nozzles (4) are fixedly mounted on both sides of the induction quenching device (3) at a relatively lower position than the induction quenching device (3), and a linkage component (5) is fixedly mounted on the other end of the bracket (1), characterized in that: The linkage component (5) comprises an outer shell (6) fixedly mounted on a side end surface of the induction hardening device (3), the outer shell (6) having an inner movably sleeved limit connecting rod (7) fixedly connected to the bracket (1) at the top of the outer surface; A group of first partial annular grooves (14) are provided on the left side of the inner wall of the outer shell (6), and a third partial annular groove (16) which is not connected to the first partial annular groove (14) is provided on the right side of the inner wall of the outer shell (6); a first connecting end (9) which is connected to the first partial annular groove (14) in the inner cavity of the outer shell (6) is provided at the bottom of the outer surface of the outer shell (6), and the first connecting end (9) is connected to the external new coolant delivery system; a second connecting end (10) which is connected to the inner cavity of the outer shell (6) is provided at the top of the outer surface of the outer shell (6), and the second connecting end (10) is connected to the cooling nozzle (4); A connecting slot (19) is provided at the top of the limit connecting rod (7), the top of the connecting slot (19) extends to the top of the limit connecting rod (7) and is connected to the external old coolant circulation system, while the bottom of the connecting slot (19) extends to the middle of the outer surface of the limit connecting rod (7) and is connected to the third local annular groove (16), the limit connecting rod (7) is divided into an upper and a lower section, and the upper and lower sections are connected by a movable flow limiting ring (11), the outer surface of the flow limiting ring (11) is movably sleeved with a heat expansion member (12) to form a transmission connection with the bottom end of the upper section limit connecting rod (7), and a guide block (13) is provided at the bottom of the inner cavity of the upper section limit connecting rod (7), the flow limiting ring (11) is located at the top of the inner cavity of the outer shell (6) and is in contact with the mixed coolant.

2. The quenching device for slewing bearing production and processing according to claim 1 is characterized in that: A group of grooves are respectively provided on the left and right sides of the middle of the limit connecting rod (7), and filtering mesh holes (17) are provided in the grooves and penetrate the left and right end surfaces thereof.

3. The quenching device for slewing bearing production and processing according to claim 2 is characterized in that: A set of second partial annular grooves (15) is provided on the left side of the inner wall of the outer shell (6) and outside the first partial annular groove (14), and a limiting pressure block (18) having an outer diameter identical to the inner diameter of the first partial annular groove (14) is fixedly mounted on the left side of the top of the outer surface of the limiting connecting rod (7).

4. The quenching device for slewing bearing production and processing according to claim 3 is characterized in that: The old coolant circulation system on the outside forms a feedback connection with the upward movement of the induction quenching device (3), and when the induction quenching device (3) moves upward, the old coolant circulation system is triggered, and when the induction quenching device (3) moves downward, the old coolant circulation system is in a closed state, and the new coolant delivery system is in a normally open state.

5. The quenching device for slewing bearing production and processing according to claim 4 is characterized in that: A sewage outlet (8) connected to the inner cavity of the outer shell (6) is provided at the bottom of the outer surface of the outer shell (6) and located on one side of the third partial annular groove (16), and the sewage outlet (8) is located below the third partial annular groove (16).

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