TC bearing surface material spraying device

Abstract

The invention relates to the technical field of bearing surface material spraying, in particular to a TC bearing surface material spraying device which comprises a plasma spraying machine body and a spraying head installed on the plasma spraying machine body, the spraying head sprays WC alloy powder on the surface of a TC bearing, a supporting table is arranged on the outer side of the plasma spraying machine body, and a spraying head is arranged on the supporting table. A bearing moving and positioning mechanism is mounted on the supporting table; according to the plasma spraying machine, the bearing moving and positioning mechanism is arranged on the supporting table, so that the TC bearing can be supported while the plasma spraying machine body sprays WC alloy powder on the surface of the TC bearing, and after spraying and cladding of the TC bearing are completed, the sprayed and cladded TC bearing can be rapidly put into the heat preservation chamber and slowly cooled in the heat preservation chamber, so that the TC bearing is prevented from being damaged, and the service life of the TC bearing is prolonged. Therefore, the problem of stress concentration of WC alloy powder cladded on the outer side of the TC bearing is effectively relieved, and the problem that pores in the coating are mixed with unmelted particles to form a crack source is further solved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying technology for bearing surface materials, and particularly to a spraying device for TC bearing surface materials. Background Technique

[0002] The TC bearing is a cemented carbide radial bearing, which is formed by supporting tungsten carbide powder and cemented carbide through a high-temperature sintering process. The sintered layer is firmly combined with the steel matrix, and the hardness can reach 200 - 300 HB. It is mainly used in extreme working conditions with high loads and strong wear.

[0003] Currently, after the existing TC bearings are processed, in order to improve the wear resistance of the TC bearings, WC alloy powder (i.e., tungsten carbide powder) is also sprayed on the outer surface of the existing TC bearings, so that the WC alloy powder is cladded on the outer surface of the TC bearings. However, after the spraying and cladding of the WC alloy powder are completed, due to the large difference in the thermal expansion coefficients between the WC alloy powder and the matrix (such as steel) ( ), residual tensile stress is generated during rapid cooling after cladding, resulting in pores, inclusions or unmelted particles inside the TC bearing coating becoming crack sources. For this reason, we propose a spraying device for TC bearing surface materials. Summary of the Invention

[0004] The purpose of the present invention is to provide a spraying device for TC bearing surface materials to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A spraying device for TC bearing surface materials, including a plasma spraying machine body and a spray head installed on the plasma spraying machine body. The spray head sprays WC alloy powder on the surface of the TC bearing. A support table is provided outside the plasma spraying machine body, and a bearing moving and positioning mechanism is installed on the support table. The bearing moving and positioning mechanism is used to support the TC bearing; One end of the support table is provided with a heat preservation chamber. An entrance is provided on the side of the heat preservation chamber close to the support table, and a closing mechanism is provided at the entrance; A bearing supporting mechanism is provided inside the heat preservation chamber. The bearing supporting mechanism cooperates with the bearing moving and positioning mechanism to timely heat-insulate the TC bearing after spraying and cladding.

[0006] Further, the bearing moving and positioning mechanism includes a support plate, a moving block, a spreading and positioning member, a rotating lead screw, a guide rod and a driving member. The support plate is fixedly installed on the support table, and the moving block is slidably connected to the support table. The spreading and positioning member is installed on the moving block; One end of the rotating lead screw is rotatably connected to the support plate, and the moving block is threadedly sleeved outside the rotating lead screw. One end of the guiding rod is rotatably connected to the support plate. The moving block is provided with a through hole, and a guiding sleeve is rotatably connected at the through hole. The guiding sleeve is slidably sleeved outside the guiding rod. A synchronizing member is provided outside the guiding sleeve, and the synchronizing member is connected to the spreading and positioning member; There are two driving members, both of the two driving members are installed on the support table, and the two driving members respectively drive the rotating lead screw and the guiding rod; The other end of the rotating lead screw passes through the heat preservation chamber and is connected to the bearing supporting mechanism.

[0007] Further, the spreading and positioning member includes a fixing plate, a rotating sleeve, a rotating shell and a clamping member. The fixing plate is fixedly installed on the moving block, and the rotating sleeve penetrates through the fixing plate. The rotating sleeve is rotatably connected to the fixing plate. The synchronizing member is connected to the rotating sleeve. One end of the rotating sleeve is fixedly connected to the rotating shell. The clamping member is installed between the rotating sleeve and the rotating shell. By providing the spreading and positioning member, the function of spreading and positioning the TC bearing is realized.

[0008] Further, the clamping member includes a rotating plate, a connecting rod, a clamping block, a rotating shaft and a rotating motor. The rotating plate is rotatably connected inside the rotating shell. The rotating plate is provided with a plurality of arc-shaped grooves. There are a plurality of connecting rods. The plurality of connecting rods respectively slide through the plurality of arc-shaped grooves. The rotating shell is provided with a moving port corresponding to the connecting rod. One end of the connecting rod is fixedly connected to the clamping block, and the clamping block is slidably connected outside the moving port; The rotating shaft penetrates through the rotating sleeve, and one end of the rotating shaft is fixedly connected to the rotating plate. The rotating motor is fixedly installed on the rotating sleeve, and the rotating motor is used to drive the rotating shaft. By providing the clamping member, the function of clamping and positioning the TC bearing is realized.

[0009] Further, the closing mechanism includes a closing plate, a connecting seat and a pushing member. One side of the closing plate is located at the entrance, and the closing plate is rotatably connected to the connecting seat through a pin shaft. The connecting seat is fixedly installed outside the heat preservation chamber. The pushing member is installed outside the heat preservation chamber, and the pushing member is used to push the closing plate. By providing the closing mechanism, the function of opening and closing the entrance is realized.

[0010] Further, the pushing member includes an electric push rod, a pushing support rod and a pushing block. The electric push rod is fixedly installed outside the heat preservation chamber, and the output end of the electric push rod is rotatably connected to the pushing support rod. The other end of the pushing support rod is rotatably connected to the pushing block through a pin shaft, and the pushing block is fixedly installed on the closing plate. By providing the pushing member, the function of pushing the closing plate is realized.

[0011] Furthermore, the bearing support mechanism includes a positioning sleeve, a positioning plate, a rotating member, a supporting member, and an adjusting member. The positioning sleeve is located inside the heat preservation chamber, and one end of the positioning sleeve is fixedly connected to the positioning plate. The positioning plate is provided with a circular hole corresponding to the position of the positioning sleeve, and the positioning plate is rotatably connected inside the heat preservation chamber; The rotating member is installed inside the positioning sleeve and is connected to the rotating lead screw. There are multiple supporting members, and the multiple supporting members are arranged around one side of the positioning plate close to the inlet. The adjusting member is installed at the top inside the heat preservation chamber, and the adjusting member is used to adjust the supporting members. By providing the bearing support mechanism, the function of docking and positioning the bearing is realized.

[0012] Furthermore, the rotating member includes an internal gear ring and a rotating gear. The internal gear ring is fixedly installed inside the positioning sleeve, and the internal gear ring is meshed with the rotating gear. The rotating gear is fixedly sleeved outside the rotating lead screw. By providing the rotating member, the function of driving the positioning sleeve is realized.

[0013] Furthermore, the supporting member includes a guide rail, a spreading plate, a positioning rod, a positioning spring, a positioning support rod, and a positioning ear. The guide rail is fixedly installed on one side of the positioning plate. There are two spreading plates, and the two spreading plates are respectively slidably sleeved at both ends of the guide rail. The positioning rod slidably penetrates through the two spreading plates. The positioning spring is sleeved outside the positioning rod, and both ends of the positioning spring are fixedly connected to the two spreading plates; The positioning support rod is rotatably connected to the guide rail through a pin shaft, and both ends of the positioning support rod are respectively rotatably connected to the two positioning ears. The two positioning ears are respectively fixedly connected to the two spreading plates. A synchronous rod is installed on one spreading plate close to the inner wall of the heat preservation chamber, and a first wedge-shaped block is fixedly installed on the synchronous rod. By providing the supporting member, the function of supporting and positioning the TC bearing is realized.

[0014] Furthermore, the adjusting member includes a fixed block, a moving rod, a second wedge-shaped block, a connecting spring, and a contact plate. The fixed block is fixedly installed at the top inside the heat preservation chamber, and the moving rod slidably penetrates through the fixed block. One end of the moving rod is fixedly connected to the second wedge-shaped block, and the other end of the moving rod is fixedly connected to the contact plate. The second wedge-shaped block is slidably connected to the adjacent first wedge-shaped block. The connecting spring is sleeved outside the moving rod, and both ends of the connecting spring are respectively fixedly connected to the fixed block and the contact plate. By providing the adjusting member, the function of pushing the adjacent first wedge-shaped block is realized.

[0015] The present invention has at least the following beneficial effects: 1. When the present invention is in use, through the bearing moving and positioning mechanism provided on the support platform, while the plasma spraying machine body sprays WC alloy powder on the surface of the TC bearing, the TC bearing can be supported, and the TC bearing can be rotated relative to the nozzle, so that the TC bearing can be sprayed in all-round cooperation; 2. After the spraying and cladding of the TC bearing is completed, through the bearing supporting mechanism provided inside the heat preservation chamber, the bearing supporting mechanism cooperates with the bearing moving and positioning mechanism, and can quickly put the TC bearing after spraying and cladding into the heat preservation chamber, and slowly cool it inside the heat preservation chamber, so as to effectively relieve the stress concentration problem of the WC alloy powder cladded on the outside of the TC bearing, and further solve the problem that the pores and inclusion of unmelted particles inside the coating become the crack source. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the overall structure of the present invention; Figure 3 is a schematic diagram of the structure of the support platform of the present invention; Figure 4 is a schematic diagram of the structure of the driving part of the present invention; Figure 5 For the present invention Figure 4 is an enlarged schematic diagram of area A in the present invention; Figure 6 is a schematic diagram of the structure of the synchronizing part of the present invention; Figure 7 is a schematic diagram of the structure of the clamping block of the present invention; Figure 8 is a top view of the structure of the rotating plate of the present invention; Figure 9 is a schematic diagram of the structure of the arc-shaped groove of the present invention; Figure 10 is a schematic diagram of the structure of the rotating part of the present invention; Figure 11 is a schematic diagram of the structure of the heat preservation chamber of the present invention; Figure 12 is a schematic diagram of the structure of the positioning plate of the present invention; Figure 13 is a schematic diagram of the structure of the supporting part of the present invention; Figure 14 For the present invention Figure 13 is an enlarged schematic diagram of area B in the present invention; Figure 15 is a schematic diagram of the structure of the positioning support rod of the present invention.

[0017] In the figure: 1 - the main body of the ion spraying machine; 2 - the spray head; 3 - the support table; 4 - the bearing moving and positioning mechanism; 41 - the support plate; 42 - the moving block; 43 - the spreading and positioning member; 431 - the fixing plate; 432 - the rotating sleeve; 433 - the rotating shell; 4331 - the moving port; 434 - the clamping member; 4341 - the rotating plate; 43411 - the arc-shaped groove; 4342 - the connecting rod; 4343 - the clamping block; 4344 - the rotating shaft; 4345 - the rotating motor; 44 - the rotating lead screw; 45 - the guide rod; 46 - the driving member; 461 - the protective shell; 462 - the driving motor; 463 - the first driving gear; 464 - the gear chain; 465 - the second driving gear; 47 - the guide sleeve; 471 - the raised strip; 48 - the synchronizing member; 481 - the first synchronizing gear; 482 - the second synchronizing gear; 483 - the synchronizing chain; 5 - the heat preservation chamber; 51 - the inlet; 6 - the closing mechanism; 61 - the closing plate; 62 - the connecting seat; 63 - the pushing member; 631 - the electric push rod; 632 - the pushing support rod; 633 - the pushing block; 7 - the bearing supporting mechanism; 71 - the positioning sleeve; 72 - the positioning plate; 73 - the rotating member; 731 - the internal gear ring; 732 - the rotating gear; 74 - the supporting member; 741 - the guide rail; 742 - the spreading plate; 743 - the positioning rod; 744 - the positioning spring; 745 - the positioning support rod; 746 - the positioning ear; 747 - the synchronizing rod; 748 - the first wedge-shaped block; 75 - the adjusting member; 751 - the fixing block; 752 - the moving rod; 753 - the second wedge-shaped block; 754 - the connecting spring; 755 - the contact plate. Specific embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0019] Please refer to Figures 1 to 4 , a spraying device for the surface material of a TC bearing, including the main body 1 of a plasma spraying machine and a spray head 2 installed on the main body 1 of the plasma spraying machine. The spray head 2 sprays WC alloy powder on the surface of the TC bearing. A support table 3 is arranged outside the main body 1 of the plasma spraying machine, and a bearing moving and positioning mechanism 4 is installed on the support table 3. The bearing moving and positioning mechanism 4 is used to support the TC bearing; Please refer to Figures 1 to 5, the bearing moving and positioning mechanism 4 includes a support plate 41, a moving block 42, a spreading and positioning member 43, a rotating lead screw 44, a guide rod 45 and a driving member 46. The support plate 41 is fixedly installed on the support table 3, and the moving block 42 is slidably connected to the support table 3. The spreading and positioning member 43 is installed on the moving block 42; One end of the rotating lead screw 44 is rotatably connected to the support plate 41, and the moving block 42 is threadedly sleeved on the outer side of the rotating lead screw 44. One end of the guide rod 45 is rotatably connected to the support plate 41. The moving block 42 is provided with a through hole, and a guide sleeve 47 is rotatably connected at the through hole. The guide sleeve 47 is slidably sleeved on the outer side of the guide rod 45. A synchronizing member 48 is provided on the outer side of the guide sleeve 47, and the synchronizing member 48 is connected to the spreading and positioning member 43; There are two driving members 46. Both driving members 46 are installed on the support table 3, and the two driving members 46 respectively drive the rotating lead screw 44 and the guide rod 45; The other end of the rotating lead screw 44 passes through the heat preservation chamber 5 and is connected to the bearing supporting mechanism 7.

[0020] Please refer to Figures 6 to 9 , the spreading and positioning member 43 includes a fixing plate 431, a rotating sleeve 432, a rotating shell 433 and a clamping member 434. The fixing plate 431 is fixedly installed on the moving block 42, and the rotating sleeve 432 penetrates through the fixing plate 431. The rotating sleeve 432 is rotatably connected to the fixing plate 431. The synchronizing member 48 is connected to the rotating sleeve 432. One end of the rotating sleeve 432 is fixedly connected to the rotating shell 433. The clamping member 434 is installed between the rotating sleeve 432 and the rotating shell 433.

[0021] The clamping member 434 includes a rotating plate 4341, a connecting rod 4342, a clamping block 4343, a rotating shaft 4344 and a rotating motor 4345. The rotating plate 4341 is rotatably connected inside the rotating shell 433. The rotating plate 4341 is provided with a plurality of arc-shaped grooves 43411, and in this embodiment, the plurality of arc-shaped grooves 43411 are staggered with each other. There are a plurality of connecting rods 4342. The plurality of connecting rods 4342 respectively slide through the plurality of arc-shaped grooves 43411, that is, each arc-shaped groove 43411 is connected to a connecting rod 4342. By the rotation of the arc-shaped groove 43411, the function of adjusting the connecting rod 4342 is realized. The rotating shell 433 is provided with a moving port 4331 corresponding to the position of the connecting rod 4342. One end of the connecting rod 4342 is fixedly connected to the clamping block 4343, and the clamping block 4343 is slidably connected to the outside of the moving port 4331; The rotating shaft 4344 penetrates through the rotating sleeve 432, and one end of the rotating shaft 4344 is fixedly connected to the rotating plate 4341. The rotating motor 4345 is fixedly installed on the rotating sleeve 432, and the rotating motor 4345 is used to drive the rotating shaft 4344; Please refer toFigure 6 , the synchronizing member 48 includes a first synchronizing gear 481, a second synchronizing gear 482 and a synchronizing chain 483. The first synchronizing gear 481 is fixedly sleeved outside the guide sleeve 47, and the second synchronizing gear 482 is fixedly sleeved outside the rotating sleeve 432. The synchronizing chain 483 is drivingly connected between the first synchronizing gear 481 and the second synchronizing gear 482. And as a further explanation, in the present invention, two protruding strips 471 are provided on the outer side of the guide rod 45, and the guide sleeve 47 is provided with sliding grooves at positions corresponding to the two protruding strips 471; That is, when the guide rod 45 rotates, the two protruding strips 471 synchronously drive the guide sleeve 47 to rotate relative to the moving block 42. While the guide sleeve 47 is rotating, under the connection action of the first synchronizing gear 481, the synchronizing chain 483 and the second synchronizing gear 482, the rotating sleeve 432 is driven to rotate relative to the fixing plate 431. While the rotating sleeve 432 is rotating, the rotating shell 433 drives the TC bearing thereon to rotate, so that the TC bearing cooperates with the nozzle 2 of the plasma spraying machine body 1 to realize the function of fully spraying and cladding WC alloy powder on the surface of the TC bearing; Specific implementation process: When spraying and cladding WC alloy powder on the outer side of the TC bearing, one end of the TC bearing is contacted with the rotating shell 433, and at the same time, the inner ring of the TC bearing is located outside the plurality of clamping blocks 4343. Subsequently, the rotating motor 4345 runs, so that the rotating shaft 4344 rotates. While the rotating shaft 4344 is rotating, the rotating plate 4341 is driven to rotate relative to the rotating shell 433. At this time, under the limiting action of the plurality of connecting rods 4342 in the plurality of arc-shaped grooves 43411 and the moving ports 4331, the further connecting rods 4342 drive the clamping plate to move along the inner ring of the TC bearing until the plurality of clamping plates expand and position the TC bearing through the inner ring of the TC bearing; Subsequently, the driving member 46 at the synchronizing rod 747 runs, so that the guide rod 45 drives the rotating sleeve 432 to rotate through the synchronizing member 48, so that the TC bearing at the rotating shell 433 cooperates with the nozzle 2 to realize the function of fully spraying and cladding WC alloy powder on the outer surface of the TC bearing.

[0022] Please refer to Figures 1 to 4 and Figures 10 to 15 , one end of the support table 3 is provided with a heat preservation chamber 5. The heat preservation chamber 5 contains heat preservation materials inside and plays a role in heat preservation for the TC bearing. A feed inlet 51 is provided on one side of the heat preservation chamber 5 close to the support table 3, and a closing mechanism 6 is provided at the feed inlet 51. In this embodiment, the feed inlet 51 is circularly arranged, and at the same time, the diameter of the feed inlet 51 is larger than the diameter of the circular rotating shell 433, so that the rotating shell 433 can extend into the feed inlet 51; Please refer to Figure 4, the closing mechanism 6 includes a closing plate 61, a connecting seat 62 and a pushing member 63. One side of the closing plate 61 is located at the inlet 51, and the closing plate 61 is rotatably connected to the connecting seat 62 through a pin shaft. The setting of the closing plate 61 can close the inlet 51, ensuring the heat preservation effect inside the heat preservation chamber 5 and facilitating the taking and placing of the TC bearing. The connecting seat 62 is fixedly installed on the outside of the heat preservation chamber 5, the pushing member 63 is installed on the outside of the heat preservation chamber 5, and the pushing member 63 is used to push the closing plate 61. The pushing member 63 includes an electric push rod 631, a pushing support rod 632 and a pushing block 633. The electric push rod 631 is fixedly installed on the outside of the heat preservation chamber 5, and the output end of the electric push rod 631 is rotatably connected to the pushing support rod 632. The other end of the pushing support rod 632 is rotatably connected to the pushing block 633 through a pin shaft, and the pushing block 633 is fixedly installed on the closing plate 61. At the same time, in this embodiment, a heat insulation block is provided on the outside of the heat preservation chamber 5, which can play a role in heat insulation and support the electric push rod 631, thus ensuring the stable operation of the electric push rod 631.

[0023] Specific implementation process: When the TC bearing completes the spraying and cladding of WC alloy powder, the moving block 42 drives the TC bearing thereon to move along the direction of the heat preservation chamber 5. During the movement, the electric push rod 631 operates, that is, the output end of the electric push rod 631 retracts. Then, through the pushing support rod 632 and the pushing block 633, the closing plate 61 is driven to rotate. Since the closing plate 61 is limited by the connecting seat 62, the closing plate 61 rotates around the connection point with the connecting seat 62 until the closing plate 61 is opened and the closing plate 61 is opened to be parallel to the support table 3.

[0024] Please refer to Figures 10 to 15 , a bearing supporting mechanism 7 is provided inside the heat preservation chamber 5. The bearing supporting mechanism 7 cooperates with the bearing moving and positioning mechanism 4 to timely heat-insulate the TC bearing after spraying and cladding. The bearing supporting mechanism 7 includes a positioning sleeve 71, a positioning plate 72, a rotating member 73, a supporting member 74 and an adjusting member 75. The positioning sleeve 71 is located inside the heat preservation chamber 5, and one end of the positioning sleeve 71 is fixedly connected to the positioning plate 72. The positioning plate 72 is provided with a circular hole corresponding to the position of the positioning sleeve 71, and the positioning plate 72 is rotatably connected inside the heat preservation chamber 5. The rotating member 73 is installed inside the positioning sleeve 71, and the rotating member 73 is connected to the rotating lead screw 44. There are multiple supporting members 74. In this embodiment, preferably six supporting members 74 are provided. The multiple supporting members 74 are arranged around one side of the positioning plate 72 close to the inlet 51. The adjusting member 75 is installed at the top inside the heat preservation chamber 5, and the adjusting member 75 is used to adjust the supporting members 74. The rotating member 73 includes an internal gear ring 731 and a rotating gear 732. The internal gear ring 731 is fixedly installed inside the positioning sleeve 71, and the internal gear ring 731 is meshed with the rotating gear 732. The rotating gear 732 is fixedly sleeved outside the rotating lead screw 44. In this embodiment, the rotating lead screw 44 and the guide rod 45 respectively penetrate through the positioning sleeve 71, and one ends of the rotating lead screw 44 and the guide rod 45 are respectively rotatably connected to the inner wall of the heat preservation chamber 5. This setting can ensure the stable support of the rotating lead screw 44 and the guide rod 45. At the same time, in this embodiment, since six support members 74 are preferably provided, when the rotating lead screw 44 rotates, although the internal gear ring 731 and the positioning sleeve 71 can be driven to rotate relative to the heat preservation chamber 5 through the rotating gear 732, when the positioning sleeve 71 rotates, the TC bearing on the positioning plate 72 rotates relative to the inside of the heat preservation chamber 5, so as to further realize the function of evenly cooling the TC bearing. In this embodiment, when the rotating lead screw 44 rotates, during the process that the moving block 42 drives the TC bearing thereon to move along the heat preservation chamber 5, the positioning sleeve 71 drives the positioning plate 72 to rotate N + 30°. And when the moving block 42 returns to its original position, the positioning sleeve 71 drives the positioning plate 72 to rotate N + 30°. That is, in the present invention, before the moving block 42 moves along the direction of the inlet 51, the positioning plate 72 starts to rotate from N + 30°, until the TC bearing is placed into the inlet 51, the positioning plate 72 rotates 2N + 60°, so that there is no TC bearing on the support member 74 at the position of the inlet 51, and thus the newly entered TC bearing can be supported.

[0025] Please refer to Figure 15 , the support member 74 includes a guide rail 741, a spreading plate 742, a positioning rod 743, a positioning spring 744, a positioning support rod 745 and a positioning ear 746. The guide rail 741 is fixedly installed on one side of the positioning plate 72. There are two spreading plates 742, and the two spreading plates 742 are respectively slidably sleeved at both ends of the guide rail 741. The positioning rod 743 slidably penetrates through the two spreading plates 742. The positioning spring 744 is sleeved outside the positioning rod 743, and both ends of the positioning spring 744 are fixedly connected to the two spreading plates 742. The positioning support rod 745 is rotatably connected to the guide rail 741 through a pin shaft, and both ends of the positioning support rod 745 are respectively rotatably connected to the two positioning ears 746. The two positioning ears 746 are respectively fixedly connected to the two spreading plates 742. A synchronous rod 747 is installed on one spreading plate 742 close to the inner wall of the heat preservation chamber 5, and a first wedge-shaped block 748 is fixedly installed on the synchronous rod 747.

[0026] The adjusting member 75 includes a fixed block 751, a moving rod 752, a second wedge-shaped block 753, a connecting spring 754, and a contact plate 755. The fixed block 751 is fixedly installed at the top inside the heat preservation chamber 5, and the moving rod 752 slidably penetrates through the fixed block 751. One end of the moving rod 752 is fixedly connected to the second wedge-shaped block 753, and the other end of the moving rod 752 is fixedly connected to the contact plate 755. The second wedge-shaped block 753 is slidably connected to the adjacent first wedge-shaped block 748. The connecting spring 754 is sleeved outside the moving rod 752, and both ends of the connecting spring 754 are fixedly connected to the fixed block 751 and the contact plate 755 respectively; Specific implementation process: When the TC bearing finishes spraying and cladding the WC alloy powder, at this time, the driving member 46 at the rotating screw rod 44 operates, so that the rotating screw rod 44 rotates relative to the moving block 42. When the rotating screw rod 44 rotates, it provides a driving force for the moving block 42. Under the limiting action of the support table 3 and the guide rod 45, the moving block 42 drives the TC bearing to move along the inlet 51. At this time, the inlet 51 is in an open state, and the TC bearing enters through the inlet 51. When the TC bearing is about to approach the position of the two spreading plates 742, the edge of the rotating shell 433 contacts the contact plate 755 and pushes the contact plate 755. At this time, the contact plate 755 drives the second wedge-shaped block 753 to move along the direction of the first wedge-shaped block 748 through the connection of the moving rod 752 and the connecting spring 754. Thus, the second wedge-shaped block 753 pushes the first wedge-shaped block 748, and the first wedge-shaped block 748 drives the spreading plates 742 to move along the guide rail 741 through the spreading plates 742 thereon. At the same time, the two spreading plates 742 move towards each other further under the connection of the positioning support rod 745, the positioning rod 743, and the positioning spring 744. Subsequently, one end of the TC bearing is sleeved outside the two spreading plates 742. At the same time, by operating the rotating motor 4345, the multiple clamping blocks 4343 on the TC bearing are respectively separated from the inner ring of the TC bearing. Then, the two spreading plates 742 support the TC bearing relatively. Subsequently, the moving block 42 drives the rotating plate to leave the inlet 51. Then, the two spreading plates 742 move along the inner ring of the TC bearing again under the connection of the positioning spring 744 until the two spreading plates 742 expand and fix the TC bearing. Subsequently, the inlet 51 closes, and the positioning plate 72 moves along the inside of the heat preservation chamber 5 to slowly cool the TC bearing, thereby effectively alleviating the problem of stress concentration of the WC alloy powder cladded on the outside of the TC bearing, and further solving the problem that pores and inclusion of unmelted particles inside the coating become crack sources. Embodiment 2

[0027] Please refer to Figure 4, Embodiment 2 is a further supplementary description of Embodiment 1, specifically: the driving member 46 includes a protective shell 461, a driving motor 462, a first driving gear 463, a gear chain 464 and a second driving gear 465, the protective shell 461 is installed on the support platform 3, and the driving motor 462 is fixedly installed inside the protective shell 461, the output end of the driving motor 462 is fixedly connected to the first driving gear 463, the second driving gear 465 is fixedly connected to one end of the rotating screw rod 44 or the guide rod 45, and the gear chain 464 is transmission-connected between the first driving gear 463 and the second driving gear 465; Furthermore, when the rotating screw 44 or the guide rod 45 is driven, the driving motor 462 runs, so that the first driving gear 463 drives the second driving gear 465 to rotate through the gear chain 464, thereby causing the rotating screw 44 or the guide rod 45 to rotate relative to the support plate 41.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A TC bearing surface material spraying device, comprising a plasma spraying machine body (1) and a spray head (2) mounted on the plasma spraying machine body (1), wherein the spray head (2) sprays WC alloy powder on the surface of the TC bearing, and is characterized in that: A support platform (3) is provided outside the plasma spraying machine body (1), and a bearing moving positioning mechanism (4) is installed on the support platform (3), and the bearing moving positioning mechanism (4) is used to support the TC bearing; An insulation chamber (5) is provided at one end of the support platform (3); an entrance (51) is provided on a side of the insulation chamber (5) close to the support platform (3); and a closing mechanism (6) is provided at the entrance (51); A bearing support mechanism (7) is provided inside the insulation chamber (5), and the bearing support mechanism (7) cooperates with the bearing moving positioning mechanism (4) to timely insulate the TC bearing after spraying and cladding.

2. A TC bearing surface material spraying device according to claim 1, characterized in that: The bearing moving and positioning mechanism (4) comprises a support plate (41), a moving block (42), a spreading positioning member (43), a rotating screw (44), a guide rod (45) and a driving member (46); the support plate (41) is fixedly mounted on the support platform (3), the moving block (42) is slidably connected to the support platform (3), and the spreading positioning member (43) is mounted on the moving block (42); One end of the rotating screw rod (44) is rotatably connected to the support plate (41), and the moving block (42) is threadedly sleeved on the outside of the rotating screw rod (44); one end of the guide rod (45) is rotatably connected to the support plate (41); a through hole is provided on the moving block (42), and a guide sleeve (47) is rotatably connected to the through hole; the guide sleeve (47) is slidably sleeved on the outside of the guide rod (45); a synchronous member (48) is provided on the outside of the guide sleeve (47), and the synchronous member (48) is connected to the expansion positioning member (43); Two driving members (46) are provided, and both driving members (46) are mounted on the support platform (3), and the two driving members (46) respectively drive the rotating screw rod (44) and the guide rod (45); The other end of the rotating screw rod (44) passes through the insulation chamber (5) and is connected to the bearing support mechanism (7).

3. A TC bearing surface material spraying device according to claim 2, characterized in that: The expansion positioning member (43) comprises a fixed plate (431), a rotating sleeve (432), a rotating shell (433) and a clamping member (434); the fixed plate (431) is fixedly mounted on the moving block (42); the rotating sleeve (432) passes through the fixed plate (431); the rotating sleeve (432) is rotatably connected to the fixed plate (431); the synchronizing member (48) is connected to the rotating sleeve (432); one end of the rotating sleeve (432) is fixedly connected to the rotating shell (433); and the clamping member (434) is mounted between the rotating sleeve (432) and the rotating shell (433).

4. A TC bearing surface material spraying device according to claim 3, characterized in that: The clamping member (434) comprises a rotating plate (4341), a connecting rod (4342), a clamping block (4343), a rotating shaft (4344) and a rotating motor (4345); the rotating plate (4341) is rotatably connected to the inside of the rotating shell (433); the rotating plate (4341) is provided with a plurality of arc grooves (43411); the connecting rod (4342) is provided with a plurality of connecting rods (4342); the plurality of connecting rods (4342) respectively slide through the plurality of arc grooves (43411); the rotating shell (433) is provided with a moving opening (4331) at a position corresponding to the connecting rod (4342); one end of the connecting rod (4342) is fixedly connected to the clamping block (4343), and the clamping block (4343) is slidably connected to the outside of the moving opening (4331); The rotating shaft (4344) passes through the rotating sleeve (432), and one end of the rotating shaft (4344) is fixedly connected to the rotating plate (4341). The rotating motor (4345) is fixedly mounted on the rotating sleeve (432), and the rotating motor (4345) is used to drive the rotating shaft (4344).

5. The TC bearing surface material spraying device according to claim 1, characterized in that: The closing mechanism (6) comprises a closing plate (61), a connecting seat (62) and a pushing member (63); one side of the closing plate (61) is located at the entrance (51), and the closing plate (61) is rotatably connected to the connecting seat (62) via a pin; the connecting seat (62) is fixedly mounted on the outside of the heat preservation chamber (5); the pushing member (63) is mounted on the outside of the heat preservation chamber (5), and the pushing member (63) is used to push the closing plate (61).

6. A TC bearing surface material spraying device according to claim 5, characterized in that: The pushing member (63) comprises an electric push rod (631), a pushing support rod (632) and a pushing block (633); the electric push rod (631) is fixedly mounted on the outside of the heat preservation chamber (5); the output end of the electric push rod (631) is rotatably connected to the pushing support rod (632); the other end of the pushing support rod (632) is rotatably connected to the pushing block (633) via a pin shaft; and the pushing block (633) is fixedly mounted on the closing plate (61).

7. A TC bearing surface material spraying device according to claim 2, characterized in that: The bearing support mechanism (7) comprises a positioning sleeve (71), a positioning plate (72), a rotating member (73), a supporting member (74) and an adjusting member (75); the positioning sleeve (71) is located inside the heat preservation chamber (5); one end of the positioning sleeve (71) is fixedly connected to the positioning plate (72); a circular hole is provided on the positioning plate (72) at a position corresponding to the positioning sleeve (71); and the positioning plate (72) is rotatably connected inside the heat preservation chamber (5); The rotating member (73) is installed inside the positioning sleeve (71), and the rotating member (73) is connected to the rotating screw (44). A plurality of the supporting members (74) are provided, and the plurality of supporting members (74) are arranged around a side of the positioning plate (72) close to the entrance (51). The adjusting member (75) is installed at the top end inside the insulation chamber (5), and the adjusting member (75) is used to adjust the supporting member (74).

8. The TC bearing surface material spraying device according to claim 7, characterized in that: The rotating member (73) comprises an inner gear ring (731) and a rotating gear (732); the inner gear ring (731) is fixedly mounted on the inner side of the positioning sleeve (71), and the inner gear ring (731) is meshingly connected with the rotating gear (732); the rotating gear (732) is fixedly sleeved on the outer side of the rotating screw rod (44).

9. A TC bearing surface material spraying device according to claim 7, characterized in that: The support member (74) comprises a guide rail (741), an opening plate (742), a positioning rod (743), a positioning spring (744), a positioning support rod (745) and a positioning ear (746); the guide rail (741) is fixedly mounted on one side of the positioning plate (72); two opening plates (742) are provided; the two opening plates (742) are respectively slidably sleeved on two ends of the guide rail (741); the positioning rod (743) slides through the two opening plates (742); the positioning spring (744) is sleeved on the outside of the positioning rod (743), and the two ends of the positioning spring (744) are fixedly connected to the two opening plates (742); The positioning support rod (745) is rotatably connected to the guide rail (741) via a pin shaft, and the two ends of the positioning support rod (745) are rotatably connected to two positioning ears (746), and the two positioning ears (746) are respectively fixedly connected to two support plates (742). A synchronization rod (747) is installed on an support plate (742) close to the inner wall of the insulation chamber (5), and a first wedge block (748) is fixedly installed on the synchronization rod (747).

10. A TC bearing surface material spraying device according to claim 7, characterized in that: The adjusting member (75) comprises a fixed block (751), a moving rod (752), a second wedge-shaped block (753), a connecting spring (754) and a contact plate (755); the fixed block (751) is fixedly mounted on the top of the interior of the heat preservation chamber (5); the moving rod (752) slides through the fixed block (751); one end of the moving rod (752) is fixedly connected to the second wedge-shaped block (753); the other end of the moving rod (752) is fixedly connected to the contact plate (755); the second wedge-shaped block (753) is slidably connected to a first wedge-shaped block (748) adjacent thereto; the connecting spring (754) is sleeved on the outside of the moving rod (752); and the two ends of the connecting spring (754) are fixedly connected to the fixed block (751) and the contact plate (755) respectively.

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