Gear carburizing heat treatment carrier and loading device

Abstract

The present invention provides a gear carburizing heat treatment carrier and loading device, wherein the power shaft can be rotated by a power component, the periphery of the power shaft is used to hang the parts to be produced, the barrier assembly is installed on the sliding shaft, the sliding shaft is slidably connected to the gear frame, the power component can drive the sliding shaft to slide axially, the gear frame is installed on the chassis, the chassis can be detachably installed in the carburizing furnace, and the carbon source nozzle in the carburizing furnace is located on one side of the parts to be produced. The gear carburizing heat treatment carrier and loading device described in the present invention drives the parts to be produced to rotate by the power shaft, so that the gaseous carbon source impacted on the periphery of the parts to be produced is uniform, thereby ensuring the production quality, and the barrier assembly can be driven to axially displace by the sliding shaft, which is used to move the parts so that the two end faces of the parts can evenly receive the carbon source.

Description

Technical Field

[0001] The invention belongs to the field of carburizing, and in particular relates to a gear carburizing heat treatment carrier and a loading device. Background Art

[0002] Vacuum carburizing technology, also known as low-pressure carburizing technology, is a process in which a carburizing carbon source is introduced into a high-temperature furnace in a pulsed manner under low-pressure (generally 0-30 mbar) vacuum state for rapid carburizing.

[0003] The general process of vacuum carburizing is: parts cleaning, parts loading, furnace entry, vacuuming, heating and soaking, carburizing and diffusion, and heat treatment.

[0004] (1) Carburizing agent: propane, methane, acetylene gas, or natural gas are commonly used as carburizing agents, with a purity (volume fraction) greater than 96%. To prevent the generation of carbon black, appropriate dilution gases (such as N2, H2, etc.) are passed through.

[0005] (2) Carburizing gas flow and carburizing pressure: The carburizing gas flow rate should be such that the pressure in the furnace increases to 133.33Pa / s. When methane is used as carburizing gas, the furnace pressure is controlled at 26.6~45kPa. When propane is used as carburizing gas, the furnace pressure is 13.3~23kPa. The higher the carburizing gas pressure, the faster the carburizing and the more uniform the carburizing layer. However, more carbon black is often produced. Under the premise of ensuring a uniform carburizing layer, try to use a low carburizing pressure to reduce the generation of carbon black. If pulse ventilation carburizing is used, the furnace gas pressure is controlled at about 20kPa, and the fan stirring can be turned on.

[0006] (3) Carburizing temperature: Carburizing temperature has the most obvious effect on carburizing speed. The higher the temperature, the greater the diffusion coefficient and the faster the carburizing speed. For example, the diffusion coefficient of carbon in iron will increase by more than seven times when the temperature rises from 925°C to 1100°C. The activation energy Q of carbon diffusion in r-Fe during vacuum carburizing is 24kcal / mol, while Q of gas carburizing is 36kcal / mol, so the vacuum carburizing process is faster than the gas carburizing process. The general carburizing temperature is between 920~1080°C.

[0007] (4) Carburizing time: The carburizing time is determined according to the carburizing temperature and carburizing layer depth requirements.

[0008] During vacuum carburizing, pulse ventilation can be used to impact the surface of the part to speed up the carburizing efficiency. However, the position of the gas port in the carburizing furnace is fixed, and it always impacts one side of the part, resulting in uneven carburizing of the part surface and affecting production quality. Summary of the invention

[0009] In view of this, the present invention aims to propose a gear carburizing heat treatment carrier to solve the problem that in the prior art carburizing furnace, when performing impact carbon blowing, the position of the feed nozzle is fixed, resulting in uneven carbon blowing on the periphery of the part to be produced.

[0010] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0011] A gear carburizing heat treatment carrier includes a gear rack, a power shaft is arranged on the gear rack, the power shaft can be rotated by a power component, the periphery of the power shaft is used to hang the part to be produced, and a barrier assembly is arranged on the side of the part to be produced, the barrier assembly is installed on the sliding shaft, the sliding shaft is slidably connected to the gear rack, the power component can drive the sliding shaft to slide axially, the gear rack is installed on the chassis, the chassis can be detachably installed in the carburizing furnace, and the carbon source nozzle in the carburizing furnace is located on one side of the part to be produced.

[0012] Furthermore, the gear rack is a frame structure, and the two ends of the power shaft are respectively rotatably connected to an axle seat, and the outer contour of the axle seat is a polygonal structure. A first sliding hole is provided on the gear rack, and the outer periphery of each axle seat is slidably connected to a first sliding hole, and each axle seat is detachably connected to a first sliding hole through a first fixing bolt.

[0013] Furthermore, the power shaft and the sliding shaft are arranged parallel to each other, a second sliding hole is provided on the gear frame, the outer periphery of the sliding shaft is slidably connected to the second sliding hole, a limit plate is provided at one end of the sliding shaft, and the other end of the sliding shaft is connected to the output end of the power component, and a plurality of spacer assemblies are arranged axially around the outer periphery of the sliding shaft, and a spacer assembly is provided at both ends of each part to be produced.

[0014] Furthermore, the barrier assembly includes a first slider, the inner ring of the first slider is slidably connected to the periphery of the sliding shaft, the first slider is provided with a first threaded hole, a second fixing bolt is provided in the first threaded hole, the end of the second fixing bolt can abut against the periphery of the sliding shaft, and arc-shaped protrusions are respectively provided on both sides of the first slider, and the periphery of the arc-shaped protrusion can abut against one end of the part to be produced.

[0015] Furthermore, the power component includes a first gear, the first gear is rotatably sleeved on the gear frame, a second gear is fixedly mounted on one end of the power shaft, and the outer periphery of the second gear is meshed with the outer periphery of the first gear;

[0016] Furthermore, a first transmission shaft is installed at one end of the first gear, and the outer periphery of the first transmission shaft is rotatably sleeved on the gear frame through a first support plate. A third gear is arranged at one end of the first transmission shaft, and the third gear can drive the sliding shaft to slide axially.

[0017] Furthermore, a second support plate is provided on the gear frame, and one end of the screw rod is rotatably sleeved on the second support plate, and a fourth gear is provided on the other end of the screw rod, and a nut is threadedly connected to the outer periphery of the screw rod, and the nut is fixedly connected to one end of the sliding shaft, and a fifth gear and a sixth gear are rotatably sleeved on the gear frame respectively, and the outer periphery of the fifth gear is meshed with the outer periphery of the third gear, and a driven gear is coaxially provided at one end of the fifth gear, and the driven gear and the sixth gear are arranged parallel to each other, and the outer periphery of the driven gear is meshed with the outer periphery of the sixth gear, and a seventh gear is installed at one end of the driven gear, and an eighth gear is installed at one end of the sixth gear through the second transmission shaft, and the second transmission shaft is an avoidance structure of the seventh gear, and the outer peripheries of the seventh gear and the eighth gear can respectively mesh with the fourth gear;

[0018] Furthermore, the seventh gear and the eighth gear respectively form an intermittent gear mechanism with the fourth gear.

[0019] Furthermore, the chassis is located in the carburizing furnace, the gear rack is located on one side of the furnace door of the carburizing furnace, the third transmission shaft is rotatably sleeved on the middle part of the furnace door, one end of the third transmission shaft is connected to the power source, and a first turntable is arranged at the other end of the third transmission shaft, and a lever is eccentrically arranged at one end of the first turntable, and a second turntable is fixedly arranged at one end of the power component, and a through groove is arranged on the second turntable, and the outer periphery of the lever is located in the through groove.

[0020] Furthermore, the periphery of the third transmission shaft is rotatably sleeved to the middle part of the furnace door through a bearing, a groove is provided on the outer side of the middle part of the furnace door, a sealing assembly is installed in the groove, and the inner ring of the first sealing assembly abuts against the periphery of the third transmission shaft;

[0021] Further, the first sealing assembly includes a connecting portion, a pressing portion and a deforming portion, the pressing portion is an annular structure, the inner ring cross-section of the pressing portion is an arc structure, and the arc structure abuts against the periphery of the third transmission shaft, a connecting portion is arranged on one side of the pressing portion, the connecting portion can be detachably installed in the groove, a deforming portion is arranged on the other side of the pressing portion, the outer diameter of the deforming portion is smaller than the connecting portion, and an annular tension spring is arranged on the periphery of the pressing portion;

[0022] Furthermore, the connecting portion, the pressing portion and the deformation portion are an integrated structure.

[0023] Furthermore, a gas sealing plate is detachably mounted on the outer side of the furnace door, the periphery of the third transmission shaft is located at the inner circle of the gas sealing plate, an air path is provided on the gas sealing plate, and an external gas injection device is connected to the mold groove through the air path;

[0024] Furthermore, a second sealing component is arranged on one side of the air sealing disk, and the second sealing component can be detachably installed to the outside of the furnace door, a pressure maintaining space is arranged between the sealing end of the second sealing component and the sealing end of the first sealing component, and a pressure sensor is arranged on the second sealing component, and the pressure sensor is used to monitor the pressure of the pressure maintaining space.

[0025] Further, the power source includes a power motor and an adapter shaft, one end of the adapter shaft is provided with an adapter groove, the inner ring profile of the adapter groove is a polygonal structure, the outer contour of the output shaft of the power motor corresponds to the inner ring profile of the adapter groove, the output shaft of the power motor can slide in the adapter groove, the other end of the adapter shaft is provided with a plug-in boss, and the outer contour of the plug-in boss is a polygonal structure, one end of the third transmission shaft is provided with a plug-in groove, and the plug-in boss can be plugged into the plug-in groove;

[0026] Furthermore, a water cooling jacket is fixedly arranged on the periphery of the adapter shaft, the periphery of the water cooling jacket is fixedly installed to the movable end of the first linear module, and the first linear module is fixedly installed to a preset position, and the movable end of the first linear module can drive the axial displacement of the water cooling jacket, the adapter shaft and the plug-in boss.

[0027] Compared with the prior art, the gear carburizing heat treatment carrier of the present invention has the following beneficial effects:

[0028] (1) The gear carburizing heat treatment carrier described in the present invention drives the parts to be produced to rotate by rotating the power shaft, and the power shaft and the parts to be produced are non-coaxially rotated, so that the gaseous carbon source impacted on the periphery of the parts to be produced is uniform, thereby ensuring the production quality. The spacer assembly is provided to prevent adjacent parts to be produced from contacting each other, so as not to affect the production quality, and the ends of the parts to be produced are easily scratched by the spacer assembly and affect the carburizing effect of the ends. The spacer assembly can be driven to move axially through the sliding shaft, which is used to move the parts so that the two end faces of the parts can evenly receive the carbon source.

[0029] (2) The gear carburizing heat treatment carrier described in the present invention is configured to facilitate the disassembly of the power shaft on the gear frame by means of a first fixing bolt that can detachably mount the shaft seat, thereby realizing the disassembly and assembly of the parts to be produced on the power shaft.

[0030] (3) In the gear carburizing heat treatment carrier of the present invention, the sliding shaft can slide axially on the gear frame to achieve synchronous sliding of multiple spacer components;

[0031] The first slider is fixed by the second fixing bolt, which makes it convenient for the staff to adjust the distance between two adjacent first sliders so as to adapt to the specifications of different parts to be produced. The arc-shaped protrusion realizes contact with the end of the part to be produced, thereby reducing the contact area between the first slider and the part to be produced, and preventing the arc-shaped protrusion from abutting against the part to be produced and affecting the rotation of the part.

[0032] (4) In the gear carburizing heat treatment carrier described in the present invention, the first gear drives the third gear to rotate through the first transmission shaft. The first gear is used to drive the power component to rotate, and the third gear is used for the sliding of the sliding shaft, which reduces the cost of parts investment and the difficulty of packaging the carburizing furnace, making it easier to realize the transmission structure.

[0033] (5) In the gear carburizing heat treatment carrier described in the present invention, the third gear can drive the fifth gear to rotate, the fifth gear, the driven gear and the seventh gear are coaxially arranged, the fifth gear, the driven gear and the seventh gear can rotate synchronously, the driven gear drives the sixth gear to rotate, and the rotation direction of the sixth gear is opposite to that of the driven gear, the sixth gear and the eighth gear are coaxially arranged, the sixth gear and the eighth gear rotate synchronously, that is, the rotation direction of the eighth gear is opposite to that of the seventh gear, the seventh gear and the eighth gear intermittently drive the fourth gear to reciprocate in the forward and reverse directions, when the fourth gear rotates, because the screw rod rotates and is sleeved on the second support plate, the relative position of the screw rod remains unchanged, and the nut threadedly connected to the outer periphery of the screw rod drives the sliding rod to slide axially, that is, the fourth gear reciprocates in the forward and reverse directions to realize the reciprocating sliding of the sliding rod on the gear frame, thereby achieving the purpose of the spacer assembly to reciprocate the ends of the parts to be produced, ensuring the production quality, and the power shaft and the sliding shaft share a power source.

[0034] (6) The gear carburizing heat treatment carrier described in the present invention has a lever on the first turntable and a through groove on the second turntable. The transmission is achieved by the lever driving the second turntable to rotate, so as to reduce the matching accuracy of the first turntable and the second turntable.

[0035] (7) In the gear carburizing heat treatment carrier described in the present invention, the annular tension spring is used to drive the clamping part to be pressed onto the periphery of the third transmission shaft to ensure the sealing of this part, and the connecting part is fixedly sealed into the groove by disassembly and installation to ensure the sealing of this part and the stability of the clamping part. By setting the connecting part and the clamping part, the sealing performance of the third transmission shaft and the bearing is guaranteed, and the negative pressure condition in the furnace is guaranteed.

[0036] (8) The gear carburizing heat treatment carrier described in the present invention has the risk of pressure relief when the clamping part is used. In order to ensure that no impurity gas enters the furnace, a protective gas is filled on the outside of the first sealing component through an external injection device. The protective gas can be nitrogen or carbon dioxide. Even if the first sealing component is depressurized, the gas entering the furnace will not affect the carburizing condition, thereby ensuring production quality.

[0037] Another object of the present invention is to provide a loading device to solve the problem that the loading device in the prior art cannot be properly installed when loading parts to be produced into a carburizing furnace.

[0038] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0039] A loading device includes a support seat, on which a plurality of support shafts are rotatably sleeved, the plurality of support shafts are arranged parallel to each other, a plurality of support rollers are axially arranged on each support shaft, the periphery of each support roller can be rollingly connected to the lower end of a chassis, and a ramp plate is respectively arranged on both sides of the lower end of the chassis, the outer side of each ramp plate is provided with a ramp surface, the inner side of the ramp plate is a vertical surface, two second linear modules are arranged on the support seat, and the two second linear modules are arranged oppositely, and the movable end of each second linear module can abut against the vertical surface, a base is arranged in a carburizing furnace, and a mounting groove is arranged on the base, the cross-section of the mounting groove is an inverted trapezoidal structure, and the outer side of each ramp plate can fit into the inclined surface of the mounting groove.

[0040] Compared with the prior art, the loading device described in the present invention has the following advantages: during implementation, it can be plugged into the bottom of the support seat by a forklift, and then the support seat can be transferred to the bottom of the chassis, and the relative position of the chassis is positioned by means of two second linear modules respectively abutting against a vertical surface, and the chassis, gear rack and parts are transferred into the furnace by a forklift, and the chassis is placed in the installation groove, and the second linear module releases the abutment against the vertical surface, so that the chassis can float left and right in the installation groove, so that the chassis can be installed in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0042] Figure 1 This is a schematic structural diagram of a gear carburizing heat treatment carrier according to an embodiment of the present invention installed on a base;

[0043] Figure 2 It is a top view schematic diagram of a gear carburizing heat treatment carrier according to an embodiment of the present invention installed on a base;

[0044] Figure 3 This is a schematic diagram of a structure in which a sliding shaft and a power shaft are arranged on a gear rack according to an embodiment of the present invention;

[0045] Figure 4 It is a schematic structural diagram of the first transmission shaft according to an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of the cooperation among the third gear, the lead screw and the nut according to an embodiment of the present invention;

[0047] Figure 6 It is a front view schematic diagram of the cooperation among the seventh gear, the eighth gear and the fourth gear according to the embodiment of the present invention;

[0048] Figure 7It is a top view schematically showing the cooperation among the seventh gear, the eighth gear and the fourth gear according to an embodiment of the present invention;

[0049] Figure 8 It is a front view schematic diagram of the gear carburizing heat treatment carrier according to an embodiment of the present invention installed on a base;

[0050] Fig. 9 is a schematic structural diagram of a third transmission shaft according to an embodiment of the present invention;

[0051] Fig.10 It is a structural schematic diagram of installing a third transmission shaft on the furnace door according to an embodiment of the present invention;

[0052] Fig.11 It is a cross-sectional schematic diagram of installing a third transmission shaft on the furnace door according to an embodiment of the present invention;

[0053] Fig.12 This is a schematic structural diagram of a first sealing assembly according to an embodiment of the present invention;

[0054] Fig.13 It is a structural schematic diagram of the power source according to an embodiment of the present invention;

[0055] Fig.14 It is a structural schematic diagram of a loading device according to an embodiment of the present invention;

[0056] Fig.15 It is a structural schematic diagram of a first embodiment of a part to be produced according to an embodiment of the present invention;

[0057] Fig.16 It is a structural schematic diagram of a second embodiment of the part to be produced according to an embodiment of the present invention;

[0058] Fig.17 This is a schematic structural diagram of a third embodiment of the part to be produced according to an embodiment of the present invention.

[0059] Description of reference numerals:

[0060] 1- chassis; 11- ramp plate; 12- vertical profile; 2- gear rack; 3- power shaft; 31- shaft seat; 32- first fixing bolt; 4- sliding shaft; 41- limit plate; 5- power component; 51- first gear; 52- second gear; 53- first transmission shaft; 54- third gear; 55- screw rod; 56- fourth gear; 57- nut; 58- fifth gear; 59- sixth gear; 510- seventh gear; 511- eighth gear; 512- second turntable; 513- through groove; 514- driven gear; 6- parts to be produced; 7- spacer assembly; 71- first slider; 72- second fixing bolt; 73- arc convexity ;8-furnace door;81-third transmission shaft;82-first turntable;83-shift lever;9-power source;91-power motor;92-adapter shaft;93-plug-in boss;94-water cooling jacket;95-first linear module;10-first sealing assembly;101-connecting part;102-pressing part;103-deformation part;104-annular tension spring;11-air sealing disk;111-air path;12-second sealing assembly;121-pressure holding space;122-pressure sensor;13-bearing;100-support seat;200-support shaft;300-support roller;400-second linear module;500-base;501-mounting groove. DETAILED DESCRIPTION

[0061] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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 by specific circumstances.

[0064] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0065] like Figure 1-Figure 13 As shown, a gear carburizing heat treatment carrier includes a gear frame 2, a power shaft 3 is arranged on the gear frame 2, the power shaft 3 can be rotated by a power component 5, the periphery of the power shaft 3 is used to hang a part to be produced 6, and a barrier assembly 7 is arranged on the side of the part to be produced 6, the barrier assembly 7 is installed on the sliding shaft 4, the sliding shaft 4 is slidably connected to the gear frame 2, the power component 5 can drive the sliding shaft 4 to slide axially, the gear frame 2 is installed on the chassis 1, the chassis 1 can be detachably installed in the carburizing furnace, and the carbon source nozzle in the carburizing furnace is located on one side of the part to be produced 6, the carbon source nozzle can spray a gaseous carbon source to the periphery of the part to be produced 6, the part to be produced 6 in this embodiment is a ring structure, The power shaft 3 rotates to drive the part 6 to be produced to rotate, and the power shaft 3 and the part 6 to be produced are non-coaxial rotations, so that the gaseous carbon source impacted on the periphery of the part 6 to be produced is uniform, thereby ensuring the production quality. The barrier assembly 7 is arranged to prevent adjacent parts 6 to be produced from contacting each other, so as not to affect the production quality, and the end of the part 6 to be produced is easy to scratch the barrier assembly 7 and affect the carburizing effect of its end. The sliding shaft 4 can drive the barrier assembly 7 to move axially, which is used to move the part so that the two end faces of the part can evenly receive the carbon source.

[0066] The gear frame 2 is a frame structure, and the two ends of the power shaft 3 are respectively rotatably connected to an axle seat 31, and the outer contour of the axle seat 31 is a polygonal structure. A first sliding hole is provided on the gear frame 2, and the outer periphery of each axle seat 31 is slidably connected to a first sliding hole, and each axle seat 31 is detachably connected to a first sliding hole through a first fixing bolt 32. The axle seat 31 is detachably installed through the first fixing bolt 32 to facilitate the disassembly of the power shaft 3 on the gear frame 2, so as to realize the disassembly and assembly of the part 6 to be produced on the power shaft 3.

[0067] The power shaft 3 and the sliding shaft 4 are arranged parallel to each other, and a second sliding hole is provided on the gear frame 2. The outer periphery of the sliding shaft 4 is slidably connected to the second sliding hole. A limit plate 41 is provided at one end of the sliding shaft 4, and the other end of the sliding shaft 4 is connected to the output end of the power component 5. A plurality of spacer assemblies 7 are axially arranged on the outer periphery of the sliding shaft 4, and a spacer assembly 7 is respectively provided at both ends of each part 6 to be produced. The sliding shaft 4 can slide axially on the gear frame 2 to realize the synchronous sliding of multiple spacer assemblies 7.

[0068] The barrier assembly 7 includes a first slider 71, the inner ring of the first slider 71 is slidably connected to the periphery of the sliding shaft 4, a first threaded hole is provided on the first slider 71, a second fixing bolt 72 is arranged in the first threaded hole, and the end of the second fixing bolt 72 can abut against the periphery of the sliding shaft 4, arc-shaped protrusions 73 are respectively arranged on both sides of the first slider 71, and the periphery of the arc-shaped protrusion 73 can abut against one end of the part to be produced 6, and the first slider 71 is fixed by the second fixing bolt 72, which is convenient for the staff to adjust the distance between two adjacent first sliders 71 to adapt to the specifications of different parts to be produced 6, and the arc-shaped protrusion 73 realizes contact with the end of the part to be produced 6, thereby reducing the contact area between the first slider 71 and the part to be produced 6, and preventing the arc-shaped protrusion 73 from abutting against the part to be produced 6 and affecting the rotation of the part.

[0069] The power component 5 includes a first gear 51, which is rotatably sleeved on the gear frame 2. A second gear 52 is fixedly mounted on one end of the power shaft 3. The outer periphery of the second gear 52 is meshed with the outer periphery of the first gear 51. Figure 1 and Figure 2 As shown, two gear racks 2 are arranged on the chassis 1 of this embodiment to improve production efficiency, and the power shaft 3 on each gear rack 2 can be engaged with the periphery of the first gear 51 through a second gear 52, so that one first gear 51 can drive the two power shafts 3 to move.

[0070] A first transmission shaft 53 is installed at one end of the first gear 51, and the outer periphery of the first transmission shaft 53 is rotatably sleeved on the gear frame 2 through a first support plate. A third gear 54 is set at one end of the first transmission shaft 53, and the third gear 54 can drive the sliding shaft 4 to slide axially. Because the carburizing furnace is in a high temperature environment, the power source 9 cannot enter the carburizing furnace, and the carburizing furnace is in a closed space, the transmission components should be reduced. In this embodiment, the first gear 51 drives the third gear 54 to rotate through the first transmission shaft 53. The first gear 51 is used to drive the power component 5 to rotate, and the third gear 54 is used for the sliding of the sliding shaft 4, which reduces the cost of parts investment and reduces the difficulty of packaging the carburizing furnace, making it easy to realize the transmission structure.

[0071] A second support plate is arranged on the gear frame 2, and one end of the screw rod 55 is rotatably sleeved on the second support plate, and a fourth gear 56 is arranged on the other end of the screw rod 55. The outer periphery of the screw rod 55 is threadedly connected to a nut 57, and the nut 57 is fixedly connected to one end of the sliding shaft 4. A fifth gear 58 and a sixth gear 59 are rotatably sleeved on the gear frame 2 respectively, and the outer periphery of the fifth gear 58 is meshed with the outer periphery of the third gear 54. A driven gear 514 is coaxially arranged at one end of the fifth gear 58, and the driven gear 514 and the sixth gear 59 are arranged parallel to each other, and the outer periphery of the driven gear 514 is meshed with the outer periphery of the sixth gear 59. A seventh gear 510 is installed at one end of the driven gear 514, and an eighth gear 511 is installed at one end of the sixth gear 59 through a second transmission shaft, and the second transmission shaft is an avoidance structure of the seventh gear 510, and the outer peripheries of the seventh gear 510 and the eighth gear 511 can respectively mesh with the fourth gear 56; the seventh gear 510 and the eighth gear 511 respectively form an intermittent gear mechanism with the fourth gear 56.

[0072] like Figure 5-Figure 7 As shown, the third gear 54 can drive the fifth gear 58 to rotate, the fifth gear 58, the driven gear 514 and the seventh gear 510 are coaxially arranged, the fifth gear 58, the driven gear 514 and the seventh gear 510 can rotate synchronously, the driven gear 514 drives the sixth gear 59 to rotate, and the rotation direction of the sixth gear 59 is opposite to that of the driven gear 514, the sixth gear 59 and the eighth gear 511 are coaxially arranged, and the sixth gear 59 and the eighth gear 511 rotate synchronously, that is, the rotation direction of the eighth gear 511 is opposite to that of the seventh gear 510. On the contrary, the seventh gear 510 and the eighth gear 511 intermittently drive the fourth gear 56 to rotate back and forth in the forward and reverse directions. When the fourth gear 56 rotates, the screw rod 55 rotates and is sleeved on the second support plate. The relative position of the screw rod remains unchanged, and the nut 57 threadedly connected to the outer periphery of the screw rod 55 drives the sliding rod to slide axially. That is, the fourth gear 56 rotates back and forth in the forward and reverse directions to realize the reciprocating sliding of the sliding rod on the gear frame 2, thereby achieving the purpose of reciprocating the two ends of the partition assembly 7 to move the parts to be produced 6 to ensure the production quality, and the power shaft 3 and the sliding shaft 4 share a power source 9.

[0073] The carburizing furnace of this embodiment is a vacuum carburizing furnace of the prior art. The air pressure in the carburizing furnace is lower than the external air pressure. The chassis 1 is located in the carburizing furnace. The gear rack 2 is located on one side of the furnace door 8 of the carburizing furnace. The furnace door 8 is hingedly connected to the furnace body of the carburizing furnace. The middle part of the furnace door 8 is rotatably sleeved with a third transmission shaft 81. One end of the third transmission shaft 81 is connected to a power source 9. A first turntable 82 is arranged at the other end of the third transmission shaft 81. A lever 83 is eccentrically arranged at one end of the first turntable 82. A second turntable 512 is fixedly arranged at one end of the power component 5. A through groove 513 is provided on the second turntable 512, and the outer periphery of the lever 83 is located in the through groove 513. The chassis 1, the gear rack 2 and the second turntable 512 are loaded into the carburizing furnace. The third transmission shaft 81 and the first turntable 82 on the furnace door 8 cannot ensure to be coaxial with the second turntable 512. A lever 83 is provided on the first turntable 82, and a through groove 513 is provided on the second turntable 512. The transmission is realized by rotating the second turntable 512 by the lever 83, so as to reduce the matching accuracy of the first turntable 82 and the second turntable 512.

[0074] The periphery of the third transmission shaft 81 is rotatably sleeved to the middle of the furnace door 8 through the bearing 13. A groove is provided on the outer side of the middle of the furnace door 8. A sealing component is installed in the groove. The inner ring of the first sealing component 10 abuts against the periphery of the third transmission shaft 81. The first sealing component 10 is used to seal the installation groove of the bearing 13. Fig.11 and Fig.12 As shown, the first sealing assembly 10 includes a connecting portion 101, a pressing portion 102 and a deforming portion 103. The pressing portion 102 is an annular structure. The inner ring cross-section of the pressing portion 102 is an arc structure, and the arc structure abuts against the periphery of the third transmission shaft 81. The connecting portion 101 is arranged on one side of the pressing portion 102. The connecting portion 101 can be detachably installed in the groove. The deforming portion 103 is arranged on the other side of the pressing portion 102. The outer diameter of the deforming portion 103 is smaller than that of the connecting portion 101. The periphery of the pressing portion 102 is an annular The tension spring 104, the annular tension spring 104 is used to drive the clamping part 102 to be pressed onto the periphery of the third transmission shaft 81 to ensure the sealing of this part. The connecting part 101 is fixedly sealed to the groove by disassembly and installation to ensure the sealing of this part and the stability of the clamping part 102. By setting the connecting part 101 and the clamping part 102, the sealing performance of the third transmission shaft 81 and the bearing 13 is guaranteed, and the negative pressure condition in the furnace is guaranteed. In this embodiment, the connecting part 101, the clamping part 102 and the deformation part 103 are an integrated structure.

[0075] The gas sealing disk 11 is detachably installed on the outer side of the furnace door 8, and the outer periphery of the third transmission shaft 81 is located in the inner circle of the gas sealing disk 11. The gas sealing disk 11 is provided with a gas path 111, and the external gas injection equipment is connected to the groove through the gas path 111. With the use of the clamping part 102, there is a risk of pressure relief. In order to ensure that no impurity gas enters the furnace, a protective gas is filled on the outer side of the first sealing component 10 through an external injection device, and the protective gas can be nitrogen or carbon dioxide, so that even if the first sealing component 10 is depressurized, the gas entering the furnace will not affect the carburizing condition, thereby ensuring the production quality.

[0076] A second sealing component 12 is arranged on one side of the air sealing disk 11, and the second sealing component 12 can be detachably installed on the outer side of the furnace door 8. A pressure holding space 121 is arranged between the sealing end of the second sealing component 12 and the sealing end of the first sealing component 10. A pressure sensor 122 is arranged on the second sealing component 12. The pressure sensor 122 is used to monitor the pressure of the pressure holding space 121. The pressure in the pressure holding space 121 should be higher than the external air pressure, and the air pressure in the furnace should be lower than the external gas, so that the external space is not mixed into the pressure holding space 121. The pressure sensor 122 is a prior art. By detecting the pressure value in the pressure holding space 121 by the pressure sensor 122, it can be observed whether there is a pressure relief problem in the first sealing component 10 or the second sealing component 12.

[0077] The power source 9 includes a power motor 91 and an adapter shaft 92. One end of the adapter shaft 92 is provided with an adapter groove. The inner ring profile of the adapter groove is a polygonal structure. The outer contour of the output shaft of the power motor 91 corresponds to the inner ring profile of the adapter groove. The output shaft of the power motor 91 can slide in the adapter groove. The other end of the adapter shaft 92 is provided with a plug-in boss 93. The outer contour of the plug-in boss 93 is a polygonal structure. One end of the third transmission shaft 81 is provided with a plug-in groove. The plug-in boss 93 can be plugged into the plug-in groove. The power motor 91 is connected to the third transmission shaft 81 by plugging the plug-in boss 93 into the plug-in groove. The shaft 81 realizes transmission, and the third transmission shaft 81 will conduct the high temperature in the furnace to the adapter shaft 92, so a water-cooling jacket 94 is fixedly arranged on the periphery of the adapter shaft 92, and the adapter shaft 92 is cooled by the water-cooling jacket 94 to prevent the high temperature from damaging the power motor 91, and the periphery of the water-cooling jacket 94 is fixedly installed to the movable end of the first linear module 95. The first linear module 95 is a cylinder, a hydraulic cylinder or a linear motor in the prior art, and the first linear module 95 is fixedly installed to a preset position, and the movable end of the first linear module 95 can drive the water-cooling jacket 94, the adapter shaft 92 and the plug-in boss 93 to axially displace.

[0078] like Fig.14As shown, a loading device comprises a support seat, on which a plurality of support shafts are rotatably sleeved, the plurality of support shafts are arranged parallel to each other, a plurality of support rollers are axially arranged on each support shaft, the periphery of each support roller can be rollingly connected to the lower end of the chassis 1, and a ramp plate 11 is respectively arranged on both sides of the lower end of the chassis 1, the outer side of each ramp plate 11 is provided with a ramp surface, the inner side of the ramp plate 11 is a vertical profile 12, two second linear modules are arranged on the support seat, and the two second linear modules are arranged oppositely, and the movable end of each second linear module can abut against the vertical profile 12, a base is arranged in the carburizing furnace, and a mounting groove is arranged on the base, the cross section of the mounting groove is an inverted trapezoidal structure, and each ramp plate The outer sides of 11 can fit into the inclined surface of the installation groove, and can be inserted into the bottom of the support seat by a forklift during implementation, and then the support seat is transferred to the bottom of the chassis 1, and the relative position of the chassis 1 is positioned by the two second linear modules respectively abutting against a vertical profile 12, and the chassis 1, the gear rack 2 and the parts are transferred into the furnace by a forklift, and the chassis 1 is placed into the installation groove, and the second linear module releases the abutment against the vertical profile 12, so that the chassis 1 can float left and right in the installation groove, so that the chassis 1 can be installed in place, and during installation, the support seat and the chassis 1 can be repeatedly lifted by a forklift, and the installation can be ensured to be in place by manual pushing (when the parts are transferred into the carburizing furnace, the furnace is at room temperature).

[0079] The gear carburizing heat treatment carrier described in this embodiment is used in a vacuum carburizing furnace, and the heating method, vacuum pumping method and blowing gaseous carbon source method of the vacuum carburizing furnace are all existing technologies and will not be repeated here. The temperature in the carburizing furnace is about 900 degrees Celsius in the working state, and the air pressure in the furnace is lower than the external air pressure. Fig.15 The gear of a first embodiment of the part 6 to be produced is shown, Fig.16 A gear of a second embodiment of a part 6 to be produced is shown, Fig.17 The gear of the third embodiment of the part 6 to be produced is shown. The gear carburizing heat treatment carrier described in this embodiment can be loaded with the first and second embodiments of the part 6 to be produced, but it is not recommended to load the third embodiment of the part 6 to be produced.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Gear carburizing heat treatment carrier, characterized by: The invention comprises a gear frame (2), a power shaft (3) is arranged on the gear frame (2), the power shaft (3) can be rotated by a power component (5), the outer periphery of the power shaft (3) is used to hang a part to be produced (6), and a barrier assembly (7) is arranged on the side of the part to be produced (6), the barrier assembly (7) is installed on a sliding shaft (4), the sliding shaft (4) is slidably connected to the gear frame (2), the power component (5) can drive the sliding shaft (4) to slide along the axial direction, the gear frame (2) is installed on a chassis (1), the chassis (1) can be detachably installed in a carburizing furnace, and the carbon source nozzle in the carburizing furnace is located on one side of the part to be produced (6); The power shaft (3) and the sliding shaft (4) are arranged parallel to each other, a second sliding hole is arranged on the gear frame (2), the outer periphery of the sliding shaft (4) is slidably connected to the second sliding hole, a limit plate (41) is arranged at one end of the sliding shaft (4), and the other end of the sliding shaft (4) is connected to the output end of the power component (5), a plurality of spacer assemblies (7) are arranged axially on the outer periphery of the sliding shaft (4), and a spacer assembly (7) is respectively arranged at both ends of each part (6) to be produced; The baffle assembly (7) includes a first slider (71), the inner ring of the first slider (71) is slidably connected to the periphery of the sliding shaft (4), the first slider (71) is provided with a first threaded hole, a second fixing bolt (72) is arranged in the first threaded hole, the end of the second fixing bolt (72) can abut against the periphery of the sliding shaft (4), and arc-shaped protrusions (73) are respectively arranged on both sides of the first slider (71), and the periphery of the arc-shaped protrusion (73) can abut against one end of the part (6) to be produced.

2. The gear carburizing heat treatment carrier according to claim 1, characterized in that: The gear frame (2) is a frame structure, and the two ends of the power shaft (3) are respectively rotatably sleeved with a shaft seat (31), and the outer contour of the shaft seat (31) is a polygonal structure. A first sliding hole is provided on the gear frame (2), and the outer periphery of each shaft seat (31) is slidably connected to a first sliding hole, and each shaft seat (31) is detachably connected to a first sliding hole through a first fixing bolt (32).

3. The gear carburizing heat treatment carrier according to claim 1, characterized in that: The power component (5) comprises a first gear (51), the first gear (51) is rotatably sleeved on the gear frame (2), a second gear (52) is fixedly mounted on one end of the power shaft (3), and the outer periphery of the second gear (52) is meshed with the outer periphery of the first gear (51); A first transmission shaft (53) is installed at one end of the first gear (51); the outer periphery of the first transmission shaft (53) is rotatably sleeved onto the gear frame (2) via a first support plate; a third gear (54) is arranged at one end of the first transmission shaft (53); the third gear (54) can drive the sliding shaft (4) to slide along the axial direction.

4. The gear carburizing heat treatment carrier according to claim 3, characterized in that: A second support plate is arranged on the gear frame (2), one end of a screw rod (55) is rotatably sleeved on the second support plate, a fourth gear (56) is arranged on the other end of the screw rod (55), the outer periphery of the screw rod (55) is threadedly connected to a nut (57), the nut (57) is fixedly connected to one end of the sliding shaft (4), a fifth gear (58) and a sixth gear (59) are rotatably sleeved on the gear frame (2), the outer periphery of the fifth gear (58) is meshed with the outer periphery of the third gear (54), and a driven gear is coaxially arranged on one end of the fifth gear (58). The driven gear (514) and the sixth gear (59) are arranged in parallel with each other, and the outer periphery of the driven gear (514) is meshed with the outer periphery of the sixth gear (59), a seventh gear (510) is installed on one end of the driven gear (514), an eighth gear (511) is installed on one end of the sixth gear (59) through a second transmission shaft, and the second transmission shaft is a avoidance structure of the seventh gear (510), and the outer peripheries of the seventh gear (510) and the eighth gear (511) can respectively mesh with the fourth gear (56); The seventh gear (510) and the eighth gear (511) respectively form an intermittent gear mechanism with the fourth gear (56).

5. The gear carburizing heat treatment carrier according to claim 1, characterized in that: The chassis (1) is located in the carburizing furnace, the gear rack (2) is located on one side of the furnace door (8) of the carburizing furnace, the middle part of the furnace door (8) is rotatably sleeved with a third transmission shaft (81), one end of the third transmission shaft (81) is connected to a power source (9), a first rotating disk (82) is arranged at the other end of the third transmission shaft (81), a shifting rod (83) is eccentrically arranged at one end of the first rotating disk (82), a second rotating disk (512) is fixedly arranged at one end of the power component (5), a through slot (513) is arranged on the second rotating disk (512), and the outer periphery of the shifting rod (83) is located in the through slot (513); The periphery of the third transmission shaft (81) is rotatably sleeved to the middle of the furnace door (8) through a bearing (13); a groove is provided on the outer side of the middle of the furnace door (8); a sealing component is installed in the groove; and the inner ring of the first sealing component (10) abuts against the periphery of the third transmission shaft (81); The first sealing assembly (10) comprises a connecting portion (101), a pressing portion (102) and a deforming portion (103); the pressing portion (102) is an annular structure; the inner ring cross section of the pressing portion (102) is an arc-shaped structure, and the arc-shaped structure abuts against the periphery of the third transmission shaft (81); a connecting portion (101) is arranged on one side of the pressing portion (102); the connecting portion (101) can be detachably installed in the groove; a deforming portion (103) is arranged on the other side of the pressing portion (102); the outer diameter of the deforming portion (103) is smaller than that of the connecting portion (101); and an annular tension spring (104) is arranged on the periphery of the pressing portion (102); The connecting portion (101), the pressing portion (102) and the deformation portion (103) are an integrated structure.

6. The gear carburizing heat treatment carrier according to claim 5, characterized in that: A gas sealing plate (11) is detachably mounted on the outside of the furnace door (8); the periphery of the third transmission shaft (81) is located on the inner ring of the gas sealing plate (11); a gas path (111) is provided on the gas sealing plate (11); and an external gas injection device is connected to the mold groove through the gas path (111); A second sealing component (12) is arranged on one side of the gas sealing disk (11), and the second sealing component (12) can be detachably mounted on the outer side of the furnace door (8), a pressure holding space (121) is arranged between the sealing end of the second sealing component (12) and the sealing end of the first sealing component (10), and a pressure sensor (122) is arranged on the second sealing component (12), and the pressure sensor (122) is used to monitor the pressure of the pressure holding space (121).

7. The gear carburizing heat treatment carrier according to claim 5, characterized in that: The power source (9) comprises a power motor (91) and an adapting shaft (92), one end of the adapting shaft (92) is provided with an adapting groove, the inner circle profile of the adapting groove is a polygonal structure, the outer circle profile of the output shaft of the power motor (91) corresponds to the inner circle profile of the adapting groove, the output shaft of the power motor (91) can slide in the adapting groove, the other end of the adapting shaft (92) is provided with a plug-in boss (93), the outer circle profile of the plug-in boss (93) is a polygonal structure, one end of the third transmission shaft (81) is provided with a plug-in groove, and the plug-in boss (93) can be plugged into the plug-in groove; A water cooling jacket (94) is fixedly arranged on the periphery of the adapter shaft (92), the periphery of the water cooling jacket (94) is fixedly mounted to the movable end of the first linear module (95), and the first linear module (95) is fixedly mounted to a preset position, and the movable end of the first linear module (95) can drive the water cooling jacket (94), the adapter shaft (92) and the plug-in boss (93) to axially move.

8. A loading device for loading the gear carburizing heat treatment carrier according to any one of claims 1 to 7 into a carburizing furnace, characterized in that: It includes a support seat, on which multiple support shafts are rotatably sleeved, the multiple support shafts are arranged parallel to each other, and multiple support rollers are axially arranged on each support shaft, the outer periphery of each support roller can be rollingly connected to the lower end of the chassis, and a ramp plate is respectively arranged on both sides of the lower end of the chassis, the outer side of each ramp plate is provided with a ramp surface, the inner side of the ramp plate is a vertical surface, two second linear modules are arranged on the support seat, and the two second linear modules are arranged oppositely, and the movable end of each second linear module can abut against the vertical surface, a base is arranged in the carburizing furnace, and a mounting groove is arranged on the base, the cross-section of the mounting groove is an inverted trapezoidal structure, and the outer side of each ramp plate can fit into the inclined surface of the mounting groove.

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