A clamping device for heat treatment of automobile bearings

Abstract

The present invention relates to the field of heat treatment of bearings, and in particular to a clamping device for heat treatment of automobile bearings, comprising a fixing frame and a heating system; a plurality of fixing frames are connected to the heating system. The present invention can make all bearing outer rings close to each other and stacked during cooling and quenching, thereby avoiding the existence of a gap between two adjacent bearing outer rings. When spraying cooling water for cooling and quenching, the cooling water splashes to the area outside the inner wall of the bearing outer ring, preventing the cooling water from affecting the non-quenching area of ​​the bearing outer ring, ensuring the quenching quality of the bearing outer ring, and then cooling and quenching multiple bearing outer rings while ensuring the quenching quality. The advantages of ensuring the processing quality and greatly improving the processing efficiency compared with the existing device solve the problem that the existing device can only process one bearing ring at a time, which is inefficient and difficult to meet the existing assembly line type batch production and processing requirements.

Description

Technical Field

[0001] The invention relates to the field of bearing heat treatment, in particular to a clamping device for automobile bearing heat treatment. Background Art

[0002] Some bearings of special automobile parts need to be quenched on the inner wall of the bearing ring separately during heat treatment to avoid the overall hardness of the bearing ring increasing and the toughness decreasing. In order to ensure the heat treatment effect and prevent the area outside the inner wall of the bearing ring from being affected by the cooling water during cooling and quenching, the existing clamping device can only process one bearing at a time, which is inefficient and difficult to meet the existing assembly line batch production and processing needs. For example, the Chinese patent with publication number CN117431390A discloses a precision automobile bearing ring heat treatment device and heat treatment method, in which the heating induction coil rotates with the heating cover to heat the inner wall of the bearing ring by induction heating. After the inner ring of the bearing ring is heated to a predetermined temperature, the fixed cover is moved into the cold quenching cover, and the water storage cover discharges water to cool and quench the inner ring of the bearing ring. Although the device can achieve the effect of quenching the inner wall of the bearing ring separately, it still does not solve the problem of low processing efficiency. Therefore, there is an urgent need for a clamping device that can ensure both heat treatment effect and processing efficiency. Summary of the invention

[0003] In order to overcome the shortcomings of the existing device that can only process one bearing ring at a time, which is inefficient and difficult to meet the needs of existing assembly line batch production and processing, the present invention provides a clamping device for automobile bearing heat treatment.

[0004] Technical solution: A clamping device for heat treatment of automobile bearings, including a fixing frame and a heating system; a plurality of fixing frames are connected to the heating system, and the heating system is used to heat the inner wall of the outer ring of the bearing; it also includes an electric push rod, a scissor frame, a limit ring, a mounting frame, a double-layer cylinder, a water pipe and a clamping assembly; a plurality of electric push rods are fixedly connected to both sides of the heating system; the telescopic ends of all the electric push rods on the left are connected to a scissor frame through a connecting block; the telescopic ends of all the electric push rods on the right are connected to a scissor frame through a connecting block It is connected to another scissor frame; one telescopic end of each electric push rod is connected to the rod pin in the middle of the corresponding scissor frame through a connecting block; the rod pins on the opposite sides of the two scissor frames are connected to a number of clamping assemblies; every two clamping assemblies are commonly connected to a limit ring, and the height of the limit ring is consistent with the height of the outer ring of the bearing; the heating system is connected to the mounting frame; the mounting frame is connected to a double-layer cylinder, and a number of water spray holes are opened on the double-layer cylinder; the double-layer cylinder is fixedly connected to a water pipe, and the water pipe is connected to the double-layer cylinder through a number of branch pipes; the water pipe is fixedly connected to the mounting frame.

[0005] Optionally, the clamping assembly includes a clamping block, an elastic member and a fixed plate; the rod pins on the opposite sides of the two scissors frames are each fixedly connected to a clamping block through a connecting block; the two clamping blocks are each fixedly connected to an elastic member; the telescopic ends of the two elastic members are each fixedly connected to a fixed plate; the two clamping blocks are both slidably connected to the limit ring; and the two fixed plates are both fixedly connected to the limit ring.

[0006] Optionally, the heating system consists of a lifting mechanism, a support frame and an induction heater; several fixed frames are each connected to a lifting mechanism, and the lifting mechanism consists of an electric slide rail and several electric sliders; each electric push rod is fixedly connected to the corresponding electric slider; several lifting mechanisms are commonly connected to a support frame; the support frame is fixedly connected to the induction heater; and the mounting frame is fixedly connected to the induction heater.

[0007] Optionally, it also includes an electric push rod 2 and a scraper; the water pipe is fixedly connected to a plurality of electric push rods 2 through a connecting block; each electric push rod 2 has a scraper fixedly connected to its telescopic end, and the shape of the scraper matches the shape of the inner wall of a plurality of stacked bearing outer rings; all scrapers are slidably connected to the double-layer cylinder.

[0008] Optionally, an arc-shaped partition plate is also included; a plurality of arc-shaped partition plates are fixedly connected inside the double-layer cylinder, and each scraper is slidably connected to all the arc-shaped partition plates. The interior of the double-layer cylinder is divided into a plurality of equidistant cavities by the plurality of arc-shaped partition plates, each cavity corresponds to a plurality of water spray holes, and each cavity is connected to a plurality of branches of the water pipe.

[0009] Optionally, it also includes a clamping block, a return spring, a fixed ring and a driving unit; the mounting frame is rotatably connected to the double-layer cylinder; a plurality of clamping blocks are slidably connected inside the double-layer cylinder; each clamping block is fixedly connected to a plurality of return springs; all return springs are fixedly connected to the double-layer cylinder; the top limit ring is rotatably connected to the fixed ring, and the inner ring surface of the fixed ring is provided with clamping grooves corresponding to the clamping blocks one by one; the fixed ring is connected to the driving unit, and the driving unit is used to drive the fixed ring to rotate; the driving unit is connected to the top limit ring.

[0010] Optionally, a limiting block is also included; a limiting block is fixedly connected to the lower side of each clamping block.

[0011] Optionally, it also includes an exhaust pipe and a connecting pipe; the exhaust pipe is fixedly connected to the mounting frame, and the lower side of the exhaust pipe passes through the mounting frame; a plurality of connecting pipes pass through the upper part of the double-layer cylinder; all the connecting pipes are connected to the exhaust pipe; the bottom of the double-layer cylinder is in a sealed state.

[0012] Optionally, it also includes a sealing ring, a hollow plate and an electric push rod three; the lowest rod pins on the opposite sides of the two scissor frames are fixedly connected to the sealing ring through a connecting block; the sealing ring is fixedly connected to two electric push rods three; the telescopic ends of the two electric push rods three are each fixedly connected to a hollow plate, and the hollow plate is provided with an arc-shaped portion that cooperates with the double-layer cylinder; the two hollow plates are both slidably connected to the sealing ring; the two hollow plates are connected to a suction pipe, and each hollow plate is provided with a number of suction holes.

[0013] Optionally, a plurality of notches are provided on the edge of the scraper.

[0014] The beneficial effects of the present invention are as follows: when the present invention is used, five stacked bearing outer rings are spaced apart from each other during heating, so that the interaction between the five stacked bearing outer rings is prevented from changing the magnetic field distribution and causing uneven heating; when cooling and quenching, all bearing outer rings are stacked close to each other, thereby preventing the existence of a space between two adjacent bearing outer rings; when cooling and quenching are performed by spraying cooling water, the cooling water splashes to the area outside the inner wall of the bearing outer ring, so that the cooling water is prevented from affecting the non-quenching area of ​​the bearing outer ring, thereby ensuring the quenching quality of the bearing outer ring;

[0015] The water spray holes in each cavity evenly spray cooling water on the inner wall of the bearing outer ring, thereby cooling and quenching all the bearing outer rings at the same time, thereby cooling and quenching multiple bearing outer rings while ensuring the quenching quality, ensuring the processing quality and greatly improving the processing efficiency compared with the existing device;

[0016] All bearing outer rings are placed in the sealed space formed by the sealing ring, hollow plate, limit ring and double-layer cylinder for cooling and quenching, and the exhaust pipe is controlled to be started through the external exhaust equipment of the conduit, so that the exhaust pipe generates suction, and all connecting pipes generate suction, and then the water vapor generated during cooling and quenching is sucked into the exhaust equipment through the connecting pipe and the exhaust pipe and discharged outside the working area, thereby preventing the water vapor generated during cooling and quenching from escaping into the air in the working area and causing adverse effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the clamping device for heat treatment of automobile bearings of the present invention;

[0018] Figure 2 A cross-sectional view of a limit ring of a clamping device for heat treatment of an automobile bearing according to the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the induction heater of the clamping device for heat treatment of automobile bearings of the present invention;

[0020] Figure 4 It is a schematic diagram of the combined three-dimensional structure of the mounting frame, double-layer cylinder and water pipe of the clamping device for heat treatment of automobile bearings of the present invention;

[0021] Figure 5 It is a cross-sectional view of a double-layer cylinder of the clamping device for heat treatment of automobile bearings of the present invention;

[0022] Figure 6 The clamping device for heat treatment of automobile bearings of the present invention is Figure 5 A magnified image of area A;

[0023] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of the sealing ring, hollow plate and electric push rod of the clamping device for heat treatment of automobile bearings.

[0024] Markings in the accompanying drawings: 1-fixed frame, 2-lifting mechanism, 3-support frame, 4-induction heater, 001-bearing outer ring, 101-electric push rod one, 102-scissors frame, 103-limiting ring, 201-clamping block, 202-elastic member, 203-fixed plate, 301-mounting frame, 302-double-layer cylinder, 303-water pipe, 401-electric push rod two, 402-scraper, 501-arc partition plate, 601-block, 602-reset spring, 603-fixing ring, 604-gear ring, 605-driving motor, 606-flat gear, 607-limiting block, 701-exhaust pipe, 702-connecting pipe, 801-sealing ring, 802-hollow plate, 803-electric push rod three. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0026] Embodiment 1

[0027] A clamping device for heat treatment of automobile bearings, according to Figure 1-Figure 6 As shown, it includes a fixing frame 1 and a heating system; two fixing frames 1 are connected to the heating system;

[0028] It also includes an electric push rod 101, a scissor frame 102, a limit ring 103, a mounting frame 301, a double-layer cylinder 302, a water pipe 303 and a clamping assembly; two electric push rods 101 are fixedly connected to both sides of the heating system; the telescopic ends of all the electric push rods 101 on the left are connected to a scissor frame 102 through a connecting block; the telescopic ends of all the electric push rods 101 on the right are connected to another scissor frame 102 through a connecting block; each telescopic end of the electric push rod 101 is connected to the middle of the corresponding scissor frame 102 through a connecting block The rod pins on the opposite sides of the two scissor frames 102 are connected with a number of clamping assemblies; every two clamping assemblies are commonly connected with a limit ring 103, and the height of the limit ring 103 is consistent with the height of the bearing outer ring 001; the heating system is connected with a mounting frame 301; the mounting frame 301 is connected with a double-layer cylinder 302, and a number of water spray holes are opened on the double-layer cylinder 302; the double-layer cylinder 302 is fixedly connected with a water pipe 303, and the water pipe 303 is connected with the double-layer cylinder 302 through a number of branch pipes; the water pipe 303 is fixedly connected to the mounting frame 301.

[0029] The clamping assembly includes a clamping block 201, an elastic member 202 and a fixed plate 203; the rod pins on the opposite sides of the two scissor frames 102 are each fixedly connected to a clamping block 201 through a connecting block; the two clamping blocks 201 are each fixedly connected to an elastic member 202, and the elastic member 202 is configured as an elastic telescopic rod; the telescopic ends of the two elastic members 202 are each fixedly connected to a fixed plate 203; the two clamping blocks 201 are both slidably connected to the limiting ring 103; the two fixed plates 203 are both fixedly connected to the limiting ring 103.

[0030] The heating system consists of a lifting mechanism 2, a support frame 3 and an induction heater 4; each of the two fixed frames 1 is connected to a lifting mechanism 2, and the lifting mechanism 2 is composed of an electric slide rail and a plurality of electric sliders; each electric push rod 101 is fixedly connected to the corresponding electric slider; the two lifting mechanisms 2 are commonly connected to the support frame 3; the support frame 3 is bolted to the induction heater 4; the mounting frame 301 is bolted to the induction heater 4.

[0031] It also includes an electric push rod 401 and a scraper 402; the water pipe 303 is connected to the two electric push rods 401 through a connecting block bolt; each electric push rod 401 has a scraper 402 fixedly connected to its telescopic end, and the shape of the scraper 402 matches the shape of the inner wall of the five stacked bearing outer rings 001; all scrapers 402 are slidably connected to the double-layer cylinder 302.

[0032] It also includes an arc-shaped partition plate 501; a plurality of arc-shaped partition plates 501 are fixedly connected inside the double-layer cylinder 302, and each scraper 402 is slidably connected to all the arc-shaped partition plates 501. The interior of the double-layer cylinder 302 is divided into a plurality of equidistant cavities by the plurality of arc-shaped partition plates 501, each cavity corresponds to a plurality of water spray holes, and each cavity is connected to a plurality of branches of the water pipe 303.

[0033] It also includes a clamping block 601, a return spring 602, a fixing ring 603 and a driving unit; the mounting frame 301 is rotatably connected to the double-layer cylinder 302; four clamping blocks 601 are slidably connected inside the double-layer cylinder 302; each clamping block 601 is fixedly connected to two return springs 602; all return springs 602 are fixedly connected to the double-layer cylinder 302; the top limit ring 103 is rotatably connected to the fixing ring 603, and the inner ring surface of the fixing ring 603 is provided with a clamping groove corresponding to the clamping block 601 one by one; the fixing ring 603 is connected to the driving unit; the driving unit is connected to the top limit ring 103.

[0034] The driving unit consists of a gear ring 604, a driving motor 605 and a flat gear 606; the uppermost limiting ring 103 is connected to the driving motor 605 through a connecting block bolt; the output shaft of the driving motor 605 is fixedly connected to the flat gear 606; the fixing ring 603 is fixedly connected to the gear ring 604; the gear ring 604 and the flat gear 606 are meshed with each other.

[0035] It also includes a limiting block 607; a limiting block 607 is welded on the lower side of each clamping block 601.

[0036] During installation, the device is fixed on the external frame through the fixing frame 1. When the bearing outer ring 001 needs to be heat treated, the water pipe 303 is connected to the water pump through the conduit to control the electric push rod 401 to contract so that the scraper 402 moves toward the center of the double-layer cylinder 302 to prevent the scraper 402 from blocking the bearing outer ring 001 from being sleeved outside the double-layer cylinder 302. Then, the five stacked bearing outer rings 001 are sleeved outside the double-layer cylinder 302 from bottom to top through the external feeding equipment, so that the upper side of the topmost bearing outer ring 001 is against the limit block 607, thereby making the inner wall of the five stacked bearing outer rings 001 and the scraper The shape of the plate 402 corresponds, and then the electric push rod 2 401 is controlled to extend to reset the scraper 402, so that the two scrapers 402 contact the inner walls of the five stacked bearing outer rings 001, and then the five stacked bearing outer rings 001 are supported and limited by the two scrapers 402. At the same time, the lifting mechanism 2 is controlled to drive the upper and lower electric push rods 101 of the two scissor frames 102 to approach each other, so that the two scissor frames 102 shrink, so that all the limit rings 103 are close to each other and stacked together, and then the lifting mechanism 2 is controlled to drive the support frame 3, the induction heater 4, the mounting frame 301, the double-layer cylinder 302 and The connected parts move upward, so that the two scrapers 402 drive the five stacked bearing outer rings 001 to move upward, so that each bearing outer ring 001 is directly opposite to a limit ring 103, and then the electric push rod 101 is controlled to extend, so that the two scissor frames 102 are close to each other, so that the scissor frames 102 push the clamping block 201 to move toward the center of the limit ring 103, so that the elastic member 202 is stretched, so that the two clamping blocks 201 clamp the bearing outer ring 001 in the limit ring 103 and fix it, and then the electric push rod 201 is controlled to contract to make the scraper 402 away from the inner wall of the bearing outer ring 001, and then the electric push rod 201 is controlled to contract to make the scraper 402 away from the inner wall of the bearing outer ring 001, and then the electric push rod 4 ... The lifting mechanism 2 drives the support frame 3, the induction heater 4, the mounting frame 301, the double-layer cylinder 302 and the parts connected thereto to move downward and reset, and then controls the lifting mechanism 2 to drive the upper and lower electric push rods 101 of the two scissor frames 102 to move away from each other, so that the two scissor frames 102 are unfolded in the vertical direction, thereby making the five stacked bearing outer rings 001 move away from each other to form a gap, so as to avoid the interaction between the five stacked bearing outer rings 001 to change the magnetic field distribution and cause uneven heating. At this time, the five mutually spaced bearing outer rings 001 are all located outside the induction coil of the induction heater 4.

[0037] Then, the induction heater 4 is started to heat the inner walls of the five mutually spaced bearing outer rings 001. After the inner walls of the bearing outer rings 001 are heated to a preset temperature, the lifting mechanism 2 is controlled to drive the support frame 3, the induction heater 4, the mounting frame 301, the double-layer cylinder 302 and the parts connected thereto to move upward. When the clamping block 601 moves through the bearing outer ring 001, the clamping block 601 is squeezed by the bearing outer ring 001 and slides toward the center of the double-layer cylinder 302, so that the reset spring 602 is compressed, thereby allowing the clamping block 601 to pass through all the bearing outer rings 001 smoothly. 01, finally the card block 601 enters the card slot of the fixing ring 603, and the reset spring 602 releases the elastic force to reset the card block 601, so that the card block 601 fits with the card slot of the fixing ring 603, and at the same time controls the lifting mechanism 2 to operate so that all the limit rings 103 are close to each other and stacked, and then all the bearing outer rings 001 are close to each other and stacked, so as to avoid the interval between two adjacent bearing outer rings 001. When spraying cooling water for cooling and quenching, the cooling water splashes to the area outside the inner wall of the bearing outer ring 001 to prevent the cooling water from hitting the bearing outer ring 001. 01 non-quenching area, to ensure the quenching quality of the bearing outer ring 001, then the water pipe 303 is started through the water pump connected to the conduit, and the cooling water is input into the double-layer cylinder 302 through the water pipe 303. Since the inside of the double-layer cylinder 302 is divided into a number of equidistant cavities by a number of arc-shaped partition plates 501, each cavity corresponds to a number of water spray holes, and each cavity is connected to a number of branch pipes of the water pipe 303, so that the water spray holes of each cavity spray cooling water almost at the same time, and at the same time, the drive motor 605 is controlled to start, and the drive motor 60 The output shaft drives the flat gear 606 to drive the gear ring 604 to rotate, the gear ring 604 drives the fixed ring 603 to rotate, and the fixed ring 603 drives the double-layer cylinder 302 to rotate through the clamping block 601, and each cavity corresponds to a bearing outer ring 001, so that the water spray hole of each cavity evenly sprays cooling water on the inner wall of the bearing outer ring 001, and then all the bearing outer rings 001 are cooled and quenched at the same time, and then multiple bearing outer rings 001 are cooled and quenched while ensuring the quenching quality, ensuring the processing quality and greatly improving the processing efficiency compared with the existing device.

[0038] After the cooling and quenching of the bearing outer ring 001 is completed, the electric push rod 401 is controlled to extend so that the edge of the scraper 402 contacts the inner wall of the bearing outer ring 001, and then the double-layer cylinder 302 rotates and drives the scraper 402 to rotate at the same time. The scraper 402 scrapes off the oxide scale produced by the quenching of the inner wall of the bearing outer ring 001, so as to facilitate the subsequent processing of the bearing outer ring 001. There is no need to transfer the bearing outer ring 001 to other workstations after the quenching is completed to process the oxide scale produced by quenching, thereby reducing unnecessary circulation processes and improving the overall processing efficiency. Excess cooling water and scraped oxide scale fall downward along the outer wall of the double-layer cylinder 302, and are collected uniformly by placing an external collection box under the double-layer cylinder 302, and then the processing of the bearing outer ring 001 is reversed as the loading of the bearing outer ring 001, and the processed bearing outer ring 001 can be taken out.

[0039] Second embodiment

[0040] On the basis of the first embodiment, according to Figure 1 , Figure 4 and Figure 7 As shown,

[0041] It also includes an exhaust pipe 701 and a connecting pipe 702; the exhaust pipe 701 is fixedly connected to the mounting frame 301, and the lower side of the exhaust pipe 701 passes through the mounting frame 301; a plurality of connecting pipes 702 pass through the upper part of the double-layer cylinder 302; all the connecting pipes 702 are connected to the exhaust pipe 701; the bottom of the double-layer cylinder 302 is in a sealed state.

[0042] It also includes a sealing ring 801, a hollow plate 802 and an electric push rod 3 803; the lowest rod pins on the opposite sides of the two scissor frames 102 are welded with a sealing ring 801 through a connecting block; the sealing ring 801 is fixedly connected to two electric push rods 3 803; the telescopic ends of the two electric push rods 3 803 are each fixedly connected to a hollow plate 802, and the hollow plate 802 is provided with an arc portion that cooperates with the double-layer cylinder 302; the two hollow plates 802 are both slidably connected to the sealing ring 801; the two hollow plates 802 are connected to a suction pipe, and each hollow plate 802 is provided with a plurality of suction holes.

[0043] The edge of the scraper 402 is provided with a plurality of notches, so as to facilitate scraping the oxide scale formed on the inner wall of the bearing outer ring 001 into fragments.

[0044] When the outer ring 001 of the bearing is cooled and quenched by cooling water, a large amount of water vapor will be generated. The free escape of water vapor in the air will cause adverse effects. On the one hand, a large amount of water vapor escaped in the air will affect the working environment of the operator. On the other hand, a large amount of water vapor escaped in the air will easily cause corrosion to other equipment in the environment. Therefore, an exhaust pipe 701 is provided. During cooling and quenching, the exhaust pipe 701 is connected to an exhaust device through a conduit, and the electric push rod 3 803 is controlled to contract, so that the hollow plate 802 slides toward the center of the sealing ring 801, so that the arc-shaped portion of the hollow plate 802 fits with the outer wall of the double-layer cylinder 302, and at this time, the sealing ring 801 and the limit ring 103 above it are in a fit state, so that all the outer rings 001 of the bearing are in the sealed space formed by the sealing ring 801, the hollow plate 802, the limit ring 103 and the double-layer cylinder 302 for cooling and quenching. The exhaust pipe 701 is controlled to pass through the guide The vacuum equipment connected to the pipe is started, so that the vacuum pipe 701 generates suction, and all the connecting pipes 702 generate suction, and then the water vapor generated during cooling and quenching is sucked into the vacuum equipment through the connecting pipe 702 and the vacuum pipe 701 and discharged to the outside of the working area, so as to avoid the water vapor generated during cooling and quenching from escaping into the air in the working area and causing adverse effects. At the same time, the suction pipe on the hollow plate 802 is connected to the suction equipment, and the suction equipment is controlled to start, so that the suction holes on the hollow plate 802 generate suction, and the excess cooling water and the oxide scale fragments scraped off by the subsequent scraper 402 are sucked into the suction equipment for unified collection, so as to avoid the accumulation of excess cooling water in the sealed space formed by the sealing ring 801, the hollow plate 802, the limit ring 103 and the double-layer cylinder 302, resulting in the lowermost bearing outer ring 001 being directly immersed in the cooling water after heat absorption before quenching is completed, affecting the quenching effect of the bearing outer ring 001.

[0045] 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. A clamping device for heat treatment of automobile bearings, comprising a fixing frame (1) and a heating system; a plurality of fixing frames (1) are connected to the heating system, and the heating system is used to heat the inner wall of the bearing outer ring (001); characterized in that: The heating system also includes an electric push rod (101), a scissor frame (102), a limit ring (103), a mounting frame (301), a double-layer cylinder (302), a water pipe (303) and a clamping assembly; a plurality of electric push rods (101) are fixedly connected to both sides of the heating system; the telescopic ends of all the electric push rods (101) on the left are connected to a scissor frame (102) through a connecting block; the telescopic ends of all the electric push rods (101) on the right are connected to another scissor frame (102) through a connecting block; each telescopic end of the electric push rod (101) is connected to the middle of the corresponding scissor frame (102) through a connecting block. Rod-pin connection; the rod-pins on the opposite sides of the two scissor frames (102) are connected with a plurality of clamping assemblies; every two clamping assemblies are commonly connected with a limit ring (103), and the height of the limit ring (103) is consistent with the height of the bearing outer ring (001); the heating system is connected with a mounting frame (301); the mounting frame (301) is connected with a double-layer cylinder (302), and a plurality of water spray holes are opened on the double-layer cylinder (302); the double-layer cylinder (302) is fixedly connected with a water pipe (303), and the water pipe (303) is connected with the double-layer cylinder (302) through a plurality of branch pipes; the water pipe (303) is fixedly connected with the mounting frame (301); The clamping assembly comprises a clamping block (201), an elastic member (202) and a fixing plate (203); the rod pins on the opposite sides of the two scissor frames (102) are each fixedly connected to a clamping block (201) via a connecting block; the two clamping blocks (201) are each fixedly connected to an elastic member (202); the telescopic ends of the two elastic members (202) are each fixedly connected to a fixing plate (203); the two clamping blocks (201) are both slidably connected to the limiting ring (103); and the two fixing plates (203) are both fixedly connected to the limiting ring (103).

2. The clamping device for heat treatment of automobile bearings according to claim 1, characterized in that: The heating system is composed of a lifting mechanism (2), a support frame (3) and an induction heater (4); a plurality of fixed frames (1) are each connected to a lifting mechanism (2), the lifting mechanism (2) being composed of an electric slide rail and a plurality of electric sliders; each electric push rod (101) is fixedly connected to a corresponding electric slider; a plurality of lifting mechanisms (2) are commonly connected to a support frame (3); the support frame (3) is fixedly connected to an induction heater (4); and a mounting frame (301) is fixedly connected to the induction heater (4).

3. A clamping device for heat treatment of automobile bearings according to any one of claims 1 to 2, characterized in that: It also includes electric push rods 2 (401) and scrapers (402); the water pipe (303) is fixedly connected to a plurality of electric push rods 2 (401) via a connecting block; a scraper (402) is fixedly connected to the telescopic end of each electric push rod 2 (401), and the shape of the scraper (402) matches the shape of the inner wall of a plurality of stacked bearing outer rings (001); all the scrapers (402) are slidably connected to the double-layer cylinder (302).

4. The clamping device for heat treatment of automobile bearings according to claim 3, characterized in that: It also includes an arc-shaped partition plate (501); a plurality of arc-shaped partition plates (501) are fixedly connected inside the double-layer cylinder (302); each scraper (402) is slidably connected to all the arc-shaped partition plates (501); the inside of the double-layer cylinder (302) is divided into a plurality of equidistant cavities by the arc-shaped partition plates (501); each cavity corresponds to a plurality of water spray holes; and each cavity is connected to a plurality of branch pipes of the water delivery pipe (303).

5. The clamping device for heat treatment of automobile bearings according to claim 4, characterized in that: It also includes a clamping block (601), a return spring (602), a fixed ring (603) and a driving unit; the mounting frame (301) is rotatably connected to the double-layer cylinder (302); a plurality of clamping blocks (601) are slidably connected inside the double-layer cylinder (302); each clamping block (601) is fixedly connected to a plurality of return springs (602); all return springs (602) are fixedly connected to the double-layer cylinder (302); the uppermost limiting ring (103) is rotatably connected to the fixed ring (603), and the inner ring surface of the fixed ring (603) is provided with a clamping groove corresponding to the clamping block (601) one by one; the fixed ring (603) is connected to the driving unit, and the driving unit is used to drive the fixed ring (603) to rotate; the driving unit is connected to the uppermost limiting ring (103).

6. The clamping device for heat treatment of automobile bearings according to claim 5, characterized in that: It also includes a limiting block (607); a limiting block (607) is fixedly connected to the lower side of each clamping block (601).

7. The clamping device for heat treatment of automobile bearings according to claim 6, characterized in that: It also includes an air extraction pipe (701) and a connecting pipe (702); the mounting frame (301) is fixedly connected with the air extraction pipe (701), and the lower side of the air extraction pipe (701) passes through the mounting frame (301); a plurality of connecting pipes (702) pass through the upper part of the double-layer cylinder (302); all the connecting pipes (702) are connected to the air extraction pipe (701); and the bottom of the double-layer cylinder (302) is in a sealed state.

8. The clamping device for heat treatment of automobile bearings according to claim 7, characterized in that: It also includes a sealing ring (801), a hollow plate (802) and an electric push rod three (803); the rod pins at the lowest level on the opposite sides of the two scissor frames (102) are fixedly connected to the sealing ring (801) through a connecting block; the sealing ring (801) is fixedly connected to two electric push rods three (803); the telescopic ends of the two electric push rods three (803) are each fixedly connected to a hollow plate (802), and the hollow plate (802) is provided with an arc portion that cooperates with the double-layer cylinder (302); the two hollow plates (802) are both slidably connected to the sealing ring (801); the two hollow plates (802) are both connected to a suction pipe, and each hollow plate (802) is provided with a plurality of suction holes.

9. The clamping device for heat treatment of automobile bearings according to claim 8, characterized in that: The scraper (402) has a plurality of notches on its edge.

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