Graphite column hot charging equipment and graphite column hot charging method for metal base material of self-lubricating bearing

Abstract

The invention discloses graphite column hot charging equipment for a metal base material of a self-lubricating bearing. The defects of inlaying of a graphite column for the metal base material of the self-lubricating bearing in the prior art are overcome. The graphite column hot charging equipment of the metal base material of the self-lubricating bearing comprises an assembling base used for being connected with an inner hole of the metal base material in a sleeved mode and a workbench used for installing the assembling base, a heating module, a temperature sensor and a cooling channel are arranged on the assembling base, and a control module is installed on the workbench. The control module is connected with the heating module and the temperature sensor, the temperature sensor measures the temperature of the assembly base and sends a corresponding temperature signal to the control module, and the control module controls starting and stopping of the heating module according to the temperature control signal. Cooling liquid is introduced into the cooling channel so as to cool the assembling base. The invention further discloses a graphite column hot charging method and the graphite column hot charging equipment adopting the technical scheme.

Description

Technical Field

[0001] The invention relates to the technical field of self-lubricating bearing processing, in particular to graphite column thermal mounting equipment for a metal substrate of a self-lubricating bearing. Background Art

[0002] Self-lubricating bearings usually have multiple graphite columns embedded circumferentially on their metal substrate to achieve self-lubrication of the bearing.

[0003] There are usually two methods for inlaying graphite columns. The first method, such as the Chinese invention patent application with publication number CN104259739A and titled A process for inlaying graphite in a metal substrate, heats the metal substrate or freezes the graphite material, and then inlays the two together, and after returning to room temperature, the two are tightly combined. The other method, such as the Chinese utility model patent with publication number CN209125245U and titled Graphite Pressing Machine, pre-drills a bottom hole on the metal substrate, and presses the graphite that is interference fit with the bottom hole into the bottom hole through a press-fitting mechanism.

[0004] In the first method, due to the fast cooling speed of the metal substrate, during the graphite column embedding process, the metal substrate temperature is insufficient and needs to be repeatedly sent to the heating furnace for heating, resulting in low graphite column embedding efficiency. In the second method, during the embedding process, the graphite column will be cut between the bottom hole, causing the graphite column to lose the interference fit with the metal substrate, and the graphite column is still easy to fall off. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a graphite column heat-mounting device for a metal substrate of a self-lubricating bearing to solve various deficiencies of the prior art in the inlaying of graphite columns of a metal substrate of a self-lubricating bearing.

[0006] In order to achieve the above technical objectives, the graphite column hot mounting equipment for the metal substrate of the self-lubricating bearing proposed in the present invention includes an assembly seat for sleeved on the inner hole of the metal substrate and a workbench for installing the assembly seat, the assembly seat is provided with a heating module, a temperature sensor and a cooling channel, a control module is installed on the workbench, the control module connects the heating module and the temperature sensor, the temperature sensor measures the temperature of the assembly seat and sends a corresponding temperature signal to the control module, the control module controls the start and stop of the heating module according to the temperature control signal, and the cooling channel passes coolant to cool the assembly seat.

[0007] The graphite column hot mounting equipment of the present invention is provided with a heating module and a temperature sensor on the assembly seat, and a control module is provided on the workbench, so that the temperature of the metal substrate can be maintained during the process of embedding the graphite column into the metal substrate, avoiding the need for the metal substrate to be repeatedly returned to the furnace for heating, thereby improving the embedding speed of the graphite column. At the same time, a cooling channel is also provided on the assembly seat, and the cooling channel can quickly cool the assembly seat and thus quickly reduce the temperature of the metal substrate, making it easy to remove and store the metal substrate, and avoiding scalding the staff by the high-temperature metal substrate when removing and storing it.

[0008] Preferably, the assembly seats are provided in plurality, and the control modules, the heating modules, the cooling channels and the temperature sensors are provided in plurality accordingly. The plurality of temperature sensors respectively measure the temperatures of the plurality of assembly seats and send them to different control modules respectively. The plurality of control modules respectively control the start and stop of different heating modules on the plurality of assembly seats, and the plurality of cooling channels cool down different assembly seats.

[0009] The above technical solution reduces the waiting time for operators to wait for the assembly seat to heat and / or cool, improves the work efficiency of hot-loading graphite columns on metal substrates, thereby reducing labor costs and further reducing the production cost and price of self-lubricating bearings.

[0010] Preferably, a heat insulating gasket is provided between the assembly seat and the workbench.

[0011] By adopting the above technical solution, the heat transfer from the assembly seat to the workbench is reduced, and the temperature rise of the workbench is effectively avoided.

[0012] Preferably, the assembly seat is in a hollow tubular shape, and the cooling channel, the heating module and the temperature sensor are arranged on the tube wall of the assembly seat.

[0013] By adopting the above-mentioned technical scheme, the material consumption of the assembly seat is reduced, the production cost of the graphite column hot mounting equipment is reduced, and the heating and cooling speeds of the assembly seat are faster, thereby accelerating the process speed of the graphite column hot mounting and further improving the work efficiency of the graphite column hot mounting and inlaying. At the same time, the heat required for heating the assembly seat is greatly reduced, and the amount of coolant required for cooling the assembly seat is also greatly reduced, thereby reducing the energy consumption and material loss of the graphite column hot mounting and greatly reducing the use cost of the graphite column hot mounting equipment.

[0014] Preferably, a plurality of heating holes are circumferentially spaced apart on the assembly seat, and the heating holes are arranged along the axial direction of the assembly seat. The heating module comprises a plurality of heating tubes, and the plurality of heating tubes are respectively installed in different heating holes.

[0015] By adopting the above technical solution, the heating module can fully contact with the assembly seat, thereby effectively increasing the heating efficiency of the assembly seat and improving the working efficiency of graphite column thermal mounting.

[0016] Preferably, the assembly seat is arranged horizontally, and the metal substrate is sleeved on the assembly seat along the horizontal direction.

[0017] By adopting the above technical solution, the metal substrate can be stably maintained on the assembly seat, thereby preventing the metal substrate from falling off the assembly seat when the graphite column is embedded.

[0018] Preferably, the cooling channel includes a plurality of conducting grooves, a liquid inlet, a liquid outlet, a first liquid through groove and a second liquid through groove, the liquid inlet and the liquid outlet are arranged at one end of the assembly seat close to the workbench, the plurality of conducting grooves extend along the axial direction of the assembly seat, the first liquid through grooves are circumferentially spaced at one end of the assembly seat away from the workbench, the second liquid through grooves are arranged at one end of the assembly seat close to the workbench, one of the conducting grooves is connected between the liquid inlet and one of the first liquid through grooves, another conducting groove is connected between the liquid outlet and one of the first liquid through grooves, and the other conducting grooves are respectively connected between one of the first liquid through grooves and one of the second liquid through grooves, so that the plurality of conducting grooves, the plurality of the first liquid through grooves, the plurality of the second liquid through grooves, the liquid inlet and the liquid outlet are connected to form a cooling channel.

[0019] By adopting the above technical solution, the cooling length of the cooling channel 230 on the assembly seat 200 is increased, so that the coolant can have sufficient time to exchange heat with the assembly seat 200, thereby improving the cooling efficiency of the assembly seat 200.

[0020] Preferably, the number of the conducting grooves is A, the number of the first liquid-passing grooves is B, the number of the second liquid-passing grooves is C, B=A / 2-1, C=A / 2.

[0021] Preferably, it also includes a liquid supply source, a liquid supply valve, a liquid inlet pipe and a liquid outlet pipe, the liquid supply source is connected to the liquid inlet pipe, the liquid inlet pipe is connected to the liquid inlet, the liquid supply valve is connected between the liquid supply source and the liquid inlet pipe, or between the liquid inlet pipe and the liquid inlet, the liquid supply source provides pressurized cooling liquid, and the liquid outlet pipe is connected to the liquid outlet.

[0022] The present invention also provides a method for hot-loading a graphite column of a metal substrate of a self-lubricating bearing, using the graphite column hot-loading device described in any of the above technical solutions, specifically comprising the following steps: S1, setting a preset temperature on the control module; S10, placing the metal substrate on the assembly seat; S20, starting the heating module; S30, after the temperature of the assembly seat reaches a certain value, inlaying the metal substrate with graphite columns; S40, the heating module stops heating after the graphite column embedding of the metal substrate is completed; S50, introducing cooling liquid into the cooling channel; S60, the metal substrate is removed after cooling, and the process returns to S10; Wherein, in S30, the control module controls the start and stop of the heating module through the temperature signal sent by the temperature sensor to control the assembly seat to the preset temperature.

[0023] The graphite column hot-installation method of the metal substrate of the self-lubricating bearing of the present invention adopts the graphite column hot-installation equipment of any of the above technical solutions, so the graphite column hot-installation method has all the technical effects of the above technical solutions.

[0024] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a graphite column heat-mounting device for a metal substrate of a self-lubricating bearing in an embodiment of the present invention; Figure 2 It is a side view of a graphite column thermal mounting device for a metal substrate of a self-lubricating bearing according to an embodiment of the present invention; Figure 3 It is a schematic diagram of a graphite column heat-fitting device for a metal substrate of a self-lubricating bearing in an embodiment of the present invention being sleeved with a metal substrate; Figure 4 A schematic diagram of an assembly seat according to an embodiment of the present invention; Figure 5 Schematic diagram of a metal substrate in an embodiment of the present invention.

[0026] Reference numerals: 100. workbench, 110. control module, 120. thermal insulation gasket; 200, assembly seat, 201, tube body, 202, first cover, 203, second cover, 210, heating hole, 220, temperature sensor, 230, cooling channel, 231, conduction groove, 232, liquid inlet, 233, liquid outlet, 234, first liquid groove, 235, second liquid groove, 241, liquid inlet joint, 242, liquid outlet joint; 300. Heating module; 400, metal substrate, 401, through hole. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" and "several" mean two or more, unless otherwise clearly specified.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 5As shown, the graphite column hot-loading equipment of the metal substrate of the self-lubricating bearing proposed in the embodiment of the present invention includes a workbench 100 and an assembly seat 200, the assembly seat 200 is installed on the workbench 100, and the assembly seat 200 is used to sleeve the inner hole of the metal substrate 400. A heating module 300, a temperature sensor 220 and a cooling channel 230 are provided on the assembly seat 200. A control module 110 is installed on the workbench 100. The control module 110 connects the heating module 300 and the temperature sensor 220, the temperature sensor 220 measures the temperature of the assembly seat 200 and sends a corresponding temperature signal to the control module 110, and the control module 110 controls the start and stop of the heating module 300 according to the temperature signal. Coolant is passed into the cooling channel 230 to cool the assembly seat 200. Among them, a sensor mounting hole is provided on the assembly seat 200, and the temperature sensor 220 is inserted into the sensor mounting hole.

[0032] The metal substrate 400 is tubular, and has a plurality of through holes 401 arranged along the radial direction of the metal substrate 400, and the through holes 401 are used to embed graphite columns. The material of the metal substrate 400 can be, but is not limited to, carbon steel, copper alloy or aluminum alloy.

[0033] When the graphite column is embedded in the metal substrate 400, the metal substrate 400 is sleeved on the assembly seat 200, and the heating module 300 is started. The heating module 300 heats the assembly seat 200, and the assembly seat 200 transfers heat to the metal substrate 400. The control module 110 can set the heating temperature, and the start and stop of the heating module 300 are controlled by obtaining the temperature signal sent by the temperature sensor 220, so as to keep the temperature of the assembly seat 200 at the heating temperature. The heating temperature range is usually set between 300°C and 600°C.

[0034] The material of the mounting base 200 may be, but is not limited to, carbon steel, copper alloy, or aluminum alloy.

[0035] The control module 110 is provided with a display screen, which displays the temperature signal sent by the temperature sensor 220. When the displayed temperature reaches a certain value, the graphite column can be embedded. The operator embeds the graphite columns into the metal substrate 400 one by one, and then completes the graphite hot mounting of the metal substrate 400.

[0036] However, after the metal substrate 400 is heat-mounted, the temperature of the metal substrate 400 is high and it is not easy to remove. A coolant is introduced into the cooling channel 230 to cool the assembly seat 200, and the heat of the metal substrate 400 is transferred to the assembly seat 200 to cool the metal substrate 400. After the temperature of the metal substrate 400 decreases, the operator can remove the metal substrate 400.

[0037] In the graphite column hot mounting equipment of the present invention, a heating module 300 and a temperature sensor 220 are provided on the assembly seat 200, and a control module 110 is provided on the workbench 100. In this way, the temperature of the metal substrate 400 can be maintained during the process of embedding the graphite column into the metal substrate 400, avoiding the need for the metal substrate 400 to be repeatedly returned to the furnace for heating, thereby improving the embedding speed of the graphite column. At the same time, a cooling channel 230 is also provided on the assembly seat 200. The cooling channel 230 can quickly cool the assembly seat 200 and thus quickly reduce the temperature of the metal substrate 400, making it easy to remove and store the metal substrate 400, thereby avoiding scalding the staff by the high-temperature metal substrate 400 when removing and storing it.

[0038] In this embodiment, after the metal substrate 400 embedded with graphite columns is removed from the assembly seat 200, the metal substrate 400 embedded with graphite columns is placed on the assembly seat 200. At this time, some coolant still remains in the cooling channel 230. Starting the heating module 300 can evaporate the coolant, and the steam generated by the evaporation of the coolant is discharged from the cooling channel 230.

[0039] In this embodiment, the control module 110 is provided with a start button and a stop button. When the stop button is pressed, the electrical connection between the control module 110 and the heating module 300 is disconnected, thereby stopping the heating module 300 from heating. When the start button is pressed, the control module 110 automatically controls the start and stop of the heating module 300 according to the set temperature and the temperature signal of the temperature sensor 220.

[0040] In one embodiment, Figures 1 to 3 As shown, based on the graphite column thermal mounting equipment of the above-mentioned embodiment, in order to prevent the heat of the assembly seat 200 from being transferred to the workbench 100 , a heat insulation gasket 120 is provided between the assembly seat 200 and the workbench 100 .

[0041] Specifically, the assembly seat 200 is provided with screw holes, and the thermal insulation gasket 120 is provided with holes corresponding to the screw holes. The thermal insulation gasket 120 and the assembly seat 200 are fixedly mounted on the workbench 100 by screws at one end of the workbench 100 .

[0042] In this way, the heat transfer from the assembly seat 200 to the workbench 100 is reduced, and the temperature rise of the workbench 100 is effectively avoided.

[0043] In one embodiment, Figures 1 to 3 As shown, based on the graphite column thermal mounting equipment of the above-mentioned embodiment, the mounting seat 200 is horizontally arranged, and the metal substrate 400 is sleeved on the mounting seat 200 in the horizontal direction. The metal substrate 400 can be stably maintained on the mounting seat 200 to prevent the metal substrate 400 from falling off the mounting seat 200 when the graphite column is inlaid.

[0044] In one embodiment, Figures 1 to 4As shown, based on the graphite column thermal mounting equipment of the above-mentioned embodiment, the assembly seat 200 is in a hollow cylindrical shape, and the cooling channel 230 , the heating module 300 and the temperature sensor 220 are arranged on the cylindrical wall of the assembly seat 200 .

[0045] In this way, the material consumption of the assembly seat 200 is reduced, the production cost of the graphite column hot mounting equipment is reduced, and the heating and cooling speeds of the assembly seat 200 are faster, thereby speeding up the process speed of graphite column hot mounting and further improving the work efficiency of graphite column hot mounting and inlaying. At the same time, the heat required for heating the assembly seat 200 is greatly reduced, and the amount of coolant required for cooling the assembly seat 200 is also greatly reduced, thereby reducing the energy consumption and material loss of graphite column hot mounting, and greatly reducing the use cost of graphite column hot mounting equipment.

[0046] In one embodiment, Figure 2 , Figure 4 As shown, based on the graphite column thermal mounting device of the aforementioned embodiment, the heating module 300 includes a plurality of heating tubes, a plurality of heating holes 210 are circumferentially spaced on the assembly seat 200, the plurality of heating holes 210 are arranged along the axial direction of the assembly seat 200, and the plurality of heating tubes are installed in different heating holes 210. The plurality of heating tubes are electrically connected to the control module 110.

[0047] With such arrangement, the heating module 300 can fully contact the assembly seat 200 , thereby effectively increasing the heating efficiency of the assembly seat 200 and improving the working efficiency of the graphite column thermal mounting.

[0048] In one embodiment, Figure 4 As shown, based on the graphite column thermal mounting device of the aforementioned embodiment, the cooling channel 230 includes a plurality of conducting grooves 231, a liquid inlet 232, a liquid outlet 233, a first liquid through groove 234 and a second liquid through groove 235, the liquid inlet 232 and the liquid outlet 233 are arranged at one end of the assembly seat 200 close to the workbench 100, the plurality of conducting grooves 231 extend along the axial direction of the assembly seat 200, the first liquid through grooves 234 are arranged at an end of the assembly seat 200 away from the workbench 100 at circumferential intervals, and the second liquid through grooves 235 are arranged at the assembly seat 200. At one end close to the workbench 100, one of the conducting grooves 231 is connected between the liquid inlet 232 and a first liquid groove 234, another conducting groove 231 is connected between the liquid outlet 233 and a first liquid groove 234, and the other conducting grooves 231 are respectively connected between a first liquid groove 234 and a second liquid groove 235, so that multiple conducting grooves 231, multiple first liquid grooves 234, multiple second liquid grooves 235, the liquid inlet 232 and the liquid outlet 233 are connected to form a cooling channel 230.

[0049] Specifically, the assembly seat 200 includes a tube body 201, a first cover 202 and a second cover 203, and the first cover 202 and the second cover 203 are respectively covered at both ends of the tube body 201, fixed and sealed by welding. The first liquid-through grooves 234 are circumferentially spaced apart on the side of the first cover 202 facing the tube body 201. The second liquid-through grooves 234 are circumferentially spaced apart on the side of the second cover 203 facing the tube body 201. The liquid inlet 231 and the liquid outlet 232 are arranged along the radial direction of the second cover 203 and are arranged between two adjacent second liquid-through grooves 234. The liquid inlet 231 and the liquid outlet 232 are blind holes, and a liquid inlet joint 241 is installed on the liquid inlet 232, and a liquid outlet joint 242 is installed on the liquid outlet 233. The conducting groove 231 penetrates the tube body 201 along the axial direction. The width of the first liquid passage groove 234 and the second liquid passage groove 235 corresponds to the conducting groove 231. Both ends of the first liquid passage groove 234 and the second liquid passage groove 235 are connected to the conducting groove 231, and the middle part of the first liquid passage groove 234 and the middle part of the second liquid passage groove 235 are blocked by the tube wall of the tube body 201 to prevent leakage.

[0050] Through the above arrangement, the cooling length of the cooling channel 230 on the assembly seat 200 is increased, so that the coolant can have sufficient time to exchange heat with the assembly seat 200, thereby improving the cooling efficiency of the assembly seat 200.

[0051] In one embodiment, Figure 4 As shown, based on the graphite column heat-mounting equipment of the above-mentioned embodiment, the first liquid-through groove 234 and the heating hole 210 are arranged on the tube wall of the tube body 201 at intervals in the radial direction of the assembly seat 200, and the number of the first liquid-through groove 234 is equal to the number of the heating holes 210. Due to the existence of the conducting groove 231, a partition is formed on the transverse heat transfer path of the assembly seat 200, which reduces the heat transfer efficiency of the assembly seat 200 in the transverse direction. Through the spacing of the heating hole 210 and the first liquid-through groove 234, a heating tube is arranged between each two conducting grooves 231, avoiding uneven heating on the assembly seat 200, thereby improving the heating efficiency of the assembly seat 200 and improving the working efficiency of the graphite column heat-mounting; at the same time, when the assembly seat 200 is heated, there is still coolant in the cooling channel 230. Through the above-mentioned arrangement, the evaporation of the coolant in the cooling channel 230 can be evenly accelerated, further avoiding the occurrence of uneven heating on the assembly seat 200.

[0052] In one embodiment, Figure 4As shown, based on the graphite column thermal mounting equipment of the above-mentioned embodiment, the arrangement of the conducting groove 231, the first liquid-passing groove 234, and the second liquid-passing groove 235 in the cooling channel 230 is described in detail. The number of the conducting grooves 231 is A, the number of the first liquid-passing grooves 234 is B, and the number of the second liquid-passing grooves 235 is C, B = A / 2-1, C = A / 2.

[0053] In one embodiment, the graphite column hot loading equipment based on the aforementioned embodiment further includes a liquid supply source, a liquid supply valve, a liquid inlet pipe and a liquid outlet pipe, the liquid supply source is connected to the liquid inlet pipe, the liquid inlet pipe is connected to the liquid inlet port 232, the liquid supply valve is connected between the liquid supply source and the liquid inlet pipe, the liquid supply source provides pressurized cooling liquid, and the liquid outlet pipe is connected to the liquid outlet port 233.

[0054] The liquid supply source may be a municipal water supply pipeline; or a water tank and a water pump, the water pump pumps the water in the water tank into the liquid inlet pipe under pressure. The liquid inlet pipe is connected to the liquid inlet port 232 via a liquid inlet joint, and the liquid outlet pipe is connected to the liquid outlet port 233 via a liquid outlet joint.

[0055] In some other embodiments, the liquid supply valve may also be connected between the liquid inlet pipe and the liquid inlet port 232 .

[0056] The operator can control the flow of coolant in the cooling channel 230 by opening and closing the liquid supply valve, or can control the flow of coolant in the cooling channel 230 by starting and stopping the water pump through the control module 110.

[0057] In one embodiment, Figures 1 to 3 As shown, based on the graphite column hot mounting equipment of the aforementioned embodiment, a plurality of assembly seats 200 are provided, and a plurality of control modules 110, heating modules 300, cooling channels 230 and temperature sensors 220 are correspondingly provided. The plurality of temperature sensors 220 respectively measure the temperatures of the plurality of assembly seats 200 and send them to different control modules 110 respectively. The plurality of control modules 110 respectively control the start and stop of different heating modules 300 on the plurality of assembly seats 200, and the plurality of cooling channels 230 cool different assembly seats 200.

[0058] The operator can sequentially complete the graphite column heat-mounting process of the metal substrate 400 on multiple assembly seats 200. In this embodiment, two assembly seats 200 are provided, and after the metal substrate 400 on one assembly seat 200 completes the heat-mounting of the graphite column, a coolant is introduced into the assembly seat 200 to cool the assembly seat 200 and the metal substrate 400, and the operator can heat another metal substrate 400 and heat-mount the graphite column on another assembly seat 200.

[0059] In some other embodiments, three assembly seats 200 may be provided, and the heating, mounting, and cooling operations may be performed sequentially on the three assembly seats 200 .

[0060] In this way, the waiting time for operators to wait for the assembly seat 200 to heat and / or cool is reduced, and the efficiency of hot-loading the graphite column of the metal substrate 400 is improved, thereby reducing labor costs and further reducing the production cost and price of the self-lubricating bearing.

[0061] In one embodiment, based on the graphite column heat mounting equipment of the aforementioned embodiment, in order to reduce the shaking of the metal substrate 400 installed on the assembly seat 200 and increase the heat transfer efficiency between the assembly seat 200 and the metal substrate 400, the outer shape of the assembly seat 200 is adapted to the inner hole shape of the metal substrate 400, and the assembly seat 200 and the metal substrate 400 are clearance-matched.

[0062] Since the metal substrate 400 is provided with a through hole 401 circumferentially, the metal substrate 400 needs to be rotated when the graphite column is embedded in the metal substrate 400 so that the operator can sequentially complete the embedding operation of the graphite column, and the metal substrate 400 sleeved on the assembly seat 200 can rotate relative to the assembly seat 200. In order to ensure that the heated metal substrate 400 can rotate relative to the assembly seat 200, in one embodiment, based on the graphite column thermal mounting equipment of the above embodiment, the thermal expansion coefficient of the assembly seat 200 is not greater than the thermal expansion coefficient of the metal substrate 400.

[0063] Exemplarily, the material of the mounting base 200 is carbon steel, and the material of the metal substrate 400 is carbon steel or copper alloy or aluminum alloy.

[0064] Exemplarily, the mounting base 200 is made of copper alloy, and the metal substrate 400 is made of copper alloy or aluminum alloy.

[0065] In this way, after the heating module 300 heats the assembly seat 200 and the metal substrate 400, the thermal expansion of the assembly seat 200 is not greater than the thermal expansion of the metal substrate 400, so that the two can still rotate relative to each other after heating, and the metal substrate 400 can rotate relative to the assembly seat 200 to complete the graphite column embedding of the metal substrate 400.

[0066] The present invention also provides a method for hot-loading a graphite column of a metal substrate of a self-lubricating bearing, using the graphite column hot-loading equipment of the above embodiment, and the method comprises the following steps: S1, setting a preset temperature Tmp1 on the control module 110; S10, mounting the metal substrate 400 on the mounting seat 200; S20, starting the heating module 300; S30, after the temperature of the assembly seat 200 reaches a certain value, the metal substrate 400 is inlaid with graphite columns; S40, after the graphite pillars are embedded in the metal substrate 400, the heating module 300 stops heating; S50, introducing cooling liquid into the cooling channel 230; S60 , the metal substrate 400 is removed after being cooled, and the process returns to S10 .

[0067] In S30 , the control module 110 controls the start and stop of the heating module 300 through the temperature signal sent by the temperature sensor 220 to control the assembly seat 200 at the preset temperature Tmp1 .

[0068] It should be noted that the length of the graphite column is greater than the depth of the through hole 401. After the graphite column is embedded in the metal substrate 400, the outer surface and inner hole of the metal substrate 400 need to be further processed to make the outer surface and inner hole of the metal substrate 400 smooth.

[0069] In one embodiment, based on the graphite column thermal mounting method of the aforementioned embodiment, there are further steps between S10 and S20: S11, introducing compressed air into the cooling channel 230.

[0070] By introducing compressed air into the cooling channel 230, the coolant remaining in the cooling channel 230 can be discharged. The heating of the assembly seat 200 does not need to heat the coolant and evaporate the coolant, thereby improving the heating efficiency of the assembly seat 200 and reducing energy consumption.

[0071] Among them, the graphite column hot-loading equipment also includes an air source, an air pipe and an air supply valve. The air source provides compressed air, the air pipe is connected to the cooling channel 230, and the air supply valve is connected between the air pipe and the cooling channel 230. The air supply valve is opened to pass compressed air into the cooling channel 230, and the air supply valve is closed to prevent coolant from entering the air pipe. The air source can be an air compressor or a gas tank for storing compressed air. The air supply valve can be opened and closed by electric control or manually.

[0072] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. Graphite column thermal mounting equipment for metal substrate of self-lubricating bearing, characterized in that: It includes an assembly seat for sleeve-fitting the inner hole of a metal substrate and a workbench for mounting the assembly seat, wherein the assembly seat is provided with a heating module, a temperature sensor and a cooling channel, and a control module is installed on the workbench, wherein the control module is connected with the heating module and the temperature sensor, the temperature sensor measures the temperature of the assembly seat and sends a corresponding temperature signal to the control module, and the control module controls the start and stop of the heating module according to the temperature control signal, and coolant is passed into the cooling channel to cool the assembly seat.

2. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: There are multiple assembly seats, and there are correspondingly multiple control modules, heating modules, cooling channels and temperature sensors. The multiple temperature sensors respectively measure the temperatures of the multiple assembly seats and send them to different control modules respectively. The multiple control modules respectively control the start and stop of different heating modules on the multiple assembly seats, and the multiple cooling channels cool down different assembly seats.

3. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: A heat insulating gasket is provided between the assembly seat and the workbench.

4. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: The assembly seat is in the shape of a hollow tube, and the cooling channel, the heating module and the temperature sensor are arranged on the tube wall of the assembly seat.

5. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: The assembly seat is provided with a plurality of heating holes at intervals in the circumferential direction, and the heating holes are arranged along the axial direction of the assembly seat. The heating module includes a plurality of heating tubes, and the plurality of heating tubes are respectively installed in different heating holes.

6. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: The assembly seat is arranged horizontally, and the metal substrate is sleeved on the assembly seat along the horizontal direction.

7. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 1, characterized in that: The cooling channel includes a plurality of conducting grooves, a liquid inlet, a liquid outlet, a first liquid through groove and a second liquid through groove, the liquid inlet and the liquid outlet are arranged at one end of the assembly seat close to the workbench, the plurality of conducting grooves extend along the axial direction of the assembly seat, the first liquid through grooves are circumferentially spaced at one end of the assembly seat away from the workbench, the second liquid through grooves are arranged at one end of the assembly seat close to the workbench, one of the conducting grooves is connected between the liquid inlet and one of the first liquid through grooves, another conducting groove is connected between the liquid outlet and one of the first liquid through grooves, and the other conducting grooves are respectively connected between one of the first liquid through grooves and one of the second liquid through grooves, so that the plurality of conducting grooves, the plurality of the first liquid through grooves, the plurality of the second liquid through grooves, the liquid inlet and the liquid outlet are connected to form a cooling channel.

8. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 7, characterized in that: The number of the conducting grooves is A, the number of the first liquid-passing grooves is B, the number of the second liquid-passing grooves is C, B=A / 2-1, C=A / 2.

9. The graphite column thermal mounting device for the metal substrate of the self-lubricating bearing according to claim 7, characterized in that: It also includes a liquid supply source, a valve, a liquid inlet pipe and a liquid outlet pipe, wherein the liquid supply source is connected to the liquid inlet pipe, the liquid inlet pipe is connected to the liquid inlet, the valve is connected between the liquid supply source and the liquid inlet pipe, or between the liquid inlet pipe and the liquid inlet, the liquid supply source provides pressurized cooling liquid, and the liquid outlet pipe is connected to the liquid outlet.

10. A method for thermally mounting a graphite column on a metal substrate of a self-lubricating bearing, using the graphite column thermal mounting equipment as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, setting a preset temperature Tmp1 on the control module; S10, placing the metal substrate on the assembly seat; S20, starting the heating module; S30, after the temperature of the assembly seat reaches a certain value, inlaying the metal substrate with graphite columns; S40, the heating module stops heating after the graphite column embedding of the metal substrate is completed; S50, introducing cooling liquid into the cooling channel; S60, the metal substrate is removed after cooling, and the process returns to S10; Wherein, in S30, the control module controls the start and stop of the heating module through the temperature signal sent by the temperature sensor to control the assembly seat at the preset temperature Tmp1.

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