Gear bearing inner hole heating device

Abstract

The gear bearing inner hole heating device comprises a base, vertical plates are symmetrically fixed to the two ends of the top of the base, an annular top plate is fixedly connected to the tops of the vertical plates, a feeding disc is rotationally connected to the top of the top plate, four containing grooves are formed in the top of the feeding disc at equal intervals, and containing boxes are arranged in the containing grooves; an opening is formed in the bottom of the containing box, five storage grooves are formed in the containing box at equal intervals, gear bearing bodies are arranged in the storage grooves, a vertical plate is arranged at one end of the base, a falling groove in the vertical direction is formed in the top of the top plate, and the falling groove is located under the containing groove and over the conveying table. According to the gear bearing inner hole heating device, a plurality of resistor cores with different sizes are arranged on the supporting plate, the matched resistor cores can be selected according to gear bearing bodies needing to be heated, the overall structure is compact, the size and the occupied area are small, and the gear bearing inner hole heating device is convenient to use. The popularization and use are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of shaft hole heating, in particular to a gear bearing inner hole heating device. Background Art

[0002] Generally, the assembly of gear bearings with gear shafts and support shafts generally adopts the method of heating the gear or bearing as a whole or freezing the gear shaft and support shaft before assembly, and the method of electromagnetically heating the inner hole of the gear or bearing before assembly.

[0003] When batches of gears or bearings are heated as a whole using a large drying drum, the following problems arise: gears or bearings are prone to knocking against each other when placed or taken out, which may affect bearing accuracy or cause abnormal noises during gear meshing; the heating time is long, affecting work efficiency and consuming a lot of energy.

[0004] When electromagnetic induction is used to heat the inner hole of a gear bearing, the following problems exist: the production of electromagnetic radiation poses a certain safety risk to employees; the temperature control accuracy is not high, which can easily cause overheating or the temperature does not meet the assembly process requirements; the single heating quantity is small, and the production efficiency is not high.

[0005] According to a gear bearing inner hole heating device disclosed in patent number CN 218612657 U, a guide rail and a transmission box sliding on the guide rail are arranged between the heating table and the pressing table, the gear bearing is placed inside the transmission box, and the heating mechanism passes through the transmission box to heat the gear bearing. After the heating is completed, the transmission box has a heat preservation effect on the gear bearing. The transmission box is transmitted to the pressing table through the guide rail. When the temperature of the gear bearing is guaranteed, the gear shaft and the support shaft are assembled. However, the overall structure of the device is complex, the volume and floor space are large, and the operation is cumbersome; and the existing device can only heat two bearing inner holes at a time, and it needs to be reloaded and heated after the operation is completed, which is relatively inefficient. For this reason, we propose a gear bearing inner hole heating device. Summary of the invention

[0006] The object of the present invention is to provide a gear bearing inner hole heating device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gear bearing inner hole heating device, comprising a base, two ends of the top of the base are symmetrically fixed with vertical plates, and the top of the vertical plates is fixedly connected with an annular top plate, the top of the top plate is rotatably connected with a feed tray, the top of the feed tray is equidistantly provided with four placement slots, and a placement box is arranged in the placement slots, the bottom of the placement box is provided with an opening, five storage slots are equidistantly provided inside the placement box, and a gear bearing body is arranged in the storage slots, a vertical plate is provided at one end of the base, a vertical drop slot is provided on the top of the top plate, and the drop slot is located directly below the placement slot and directly above the conveying platform, a bearing inner hole heating positioning assembly is provided on the top of the base located on one side of the vertical plane of the conveying platform, a connecting slot is provided on the top of the top plate at one end vertical to the drop slot, and the connecting slot is located directly below the placement slot.

[0008] Preferably, a mounting cover is installed on the top of the placement box, and a pull block is provided on the top of the mounting cover, positioning plates are symmetrically and slidably provided in the storage slot, and a gear bearing body is provided in the storage slot between the two positioning plates, the positioning plate is located on one side of the gear bearing body and is an arc-shaped structure, and sliding grooves are provided on the corresponding two inner walls of the storage slot, and sliding rods are slidably connected in the sliding grooves, and the two adjacent positioning plates are fixedly connected by the sliding rod, and the first electric telescopic rods are installed on the corresponding two side walls of the placement box, and the piston rod end of the first electric telescopic rod extends into the placement box and is fixedly connected to the positioning plates at both ends of the storage slot.

[0009] Preferably, the bearing inner hole heating and positioning assembly includes a support seat, a support seat is provided at one end of the top of the base located at the vertical surface of the conveying platform, and a sliding seat is slidably provided in the support seat, a transmission shaft is rotatably provided on the top of the sliding seat through the bearing, and a support plate is fixedly connected to the top of the transmission shaft, eight square grooves are equidistantly provided on the top of the support plate, and a lifting column is slidably provided in the square groove, a heating mechanism is provided on the top of the lifting column, and a resistance core is provided at the end of the heating mechanism, a second electric telescopic rod is installed at the bottom end of the side wall of the sliding seat, and a push plate is fixedly connected to the piston rod end of the second electric telescopic rod, the push plate is located directly below the lifting column, and the resistance core is located directly below the inner hole of the gear bearing body.

[0010] Preferably, a screw rod is rotatably arranged in the support seat through a bearing, horizontal threaded holes are opened on both sides of the sliding seat, the screw rod is threadedly connected in the sliding seat, a servo motor is installed at the end of the support seat, and the output shaft end of the servo motor is fixed to the screw rod, and connecting plates are integrally arranged at the top ends of the corresponding two side walls of the sliding seat, and the connecting plates are slidably connected to the top of the support seat.

[0011] Preferably, the eight resistor cores are of different sizes.

[0012] Preferably, a driven gear is installed on the outer side of the transmission shaft, a mounting motor is fixedly installed on the top of the sliding seat, and a driving gear is fixedly connected to the end of the output shaft of the mounting motor, and the driving gear is meshed and connected with the driven gear.

[0013] Preferably, the top of the base is rotatably connected to a support column via a bearing, and a driven bevel gear is fixedly installed on the outer side of the support column, a drive motor is fixedly installed on the top of the base, and an active bevel gear is fixedly connected to the output shaft end of the drive motor, and the active bevel gear and the drive motor are meshingly connected.

[0014] Preferably, the positioning plate is integrally provided with a supporting convex plate at the bottom end of the arc-shaped surface, the gear bearing body is located on the top of the supporting convex plate, and the width of the supporting convex plate is smaller than the thickness of the gear bearing body.

[0015] Preferably, the bottom ends of the corresponding two side walls of the lifting column are integrally provided with protruding rods, the inner wall of the square groove on the top of the support plate is symmetrically provided with sliding grooves, the protruding rods are slidably connected in the sliding grooves, the top of the protruding rods passes through the sliding grooves, and a limiting plate is integrally provided at one end of the protruding rod located above the support plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The gear bearing body in the placement box of the present invention is positioned by two positioning plates. The positioning plates have a large curvature and are suitable for positioning gear bearing bodies of different diameters. By arranging multiple resistor cores on the support plate, and the multiple resistor cores have different sizes, suitable resistor cores can be selected according to the gear bearing body that needs to be heated, which is suitable for heating the inner holes of gear bearing bodies of different sizes and has a wider range of applications.

[0018] 2. The present invention can sequentially convey placement boxes on a feeding tray, and five gear bearing bodies are arranged in each placement box. The gear bearing bodies in the placement box can be heated sequentially, and the operation is continuous, which greatly improves the heating efficiency of the inside of the bearing.

[0019] 3. The overall structure of the device of the present invention is compact, the operation is flexible, the volume and the floor space are small, and it is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the placement box of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the bearing inner hole heating and positioning assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the bearing inner hole heating and positioning assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the bearing inner hole heating and positioning assembly of the present invention.

[0025] In the figure: 1. base; 2. vertical plate; 3. feed tray; 4. placement slot; 5. placement box; 6. installation cover; 7. slide slot; 8. storage slot; 9. gear bearing body; 10. first electric telescopic rod; 11. positioning plate; 12. supporting convex plate; 13. pull block; 14. support column; 15. driven bevel gear; 16. driving bevel gear; 17. driving motor; 18. conveyor platform; 19. connecting slot; 20. bearing inner hole heating positioning assembly; 21. support seat; 22. lead screw; 23. servo motor; 24. sliding seat; 25. transmission shaft; 26. support plate; 27. top plate; 28. lifting column; 29. ​​heating mechanism; 30. resistor core; 31. second electric telescopic rod; 32. push plate; 33. convex rod; 34. driven gear; 35. driving gear; 36. installation motor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 and Figure 3 The present invention provides a technical solution: a gear bearing inner hole heating device, comprising a base 1, vertical plates 2 are symmetrically fixed at both ends of the top of the base 1, and a ring-shaped top plate 27 is fixed to the top of the vertical plate 2, a feed tray 3 is rotatably connected to the top of the top plate 27, four placement grooves 4 are equidistantly opened on the top of the feed tray 3, and a placement box 5 is arranged in the placement groove 4.

[0028] It should be noted that the width of the placement slot 4 is equal to the sum of the widths of the placement box 5 and the two first electric telescopic rods 10 , so that the placement box 5 can be placed exactly inside the placement slot 4 , making it convenient to operate it.

[0029] An opening is provided at the bottom of the placement box 5, and five storage slots 8 are equidistantly provided inside the placement box 5, and a gear bearing body 9 is provided in the storage slot 8. A vertical plate 2 is provided at one end of the base 1, and a vertical drop slot is provided at the top of the top plate 27, and the drop slot is located directly below the placement slot 4 and directly above the conveying platform 18. A bearing inner hole heating and positioning assembly 20 is provided on the top of the base 1 on one side of the vertical plane of the conveying platform 18, and a connecting slot 19 is provided at the top of the top plate 27 at one end vertical to the drop slot, and the connecting slot 19 is located directly below the placement slot 4.

[0030] It should be noted that the storage groove 8 is used to store the gear bearing body 9. Five gear bearing bodies 9 can be placed inside one placement box 5, which not only has high heating efficiency but also allows the operator to stay away from the heated gear bearing body 9, ensuring the safety of the personnel. The connecting groove 19 arranged on the top plate 27 facilitates the placement box 5 transported here to be placed on the conveying platform 18 for output.

[0031] See also Figure 2 A mounting cover 6 is installed on the top of the placement box 5, and a pull block 13 is provided on the top of the mounting cover 6. Positioning plates 11 are symmetrically slidably arranged in the storage slot 8, and a gear bearing body 9 is arranged between the two positioning plates 11 in the storage slot 8. The positioning plate 11 is located on one side of the gear bearing body 9 and is an arc-shaped structure. The corresponding two inner walls of the storage slot 8 are provided with sliding grooves 7, and a sliding rod is slidably connected in the sliding groove 7. The two adjacent positioning plates 11 are fixedly connected by the sliding rod. The corresponding two side walls of the placement box 5 are installed with a first electric telescopic rod 10, and the piston rod end of the first electric telescopic rod 10 extends into the placement box 5 and is fixedly connected to the positioning plates 11 at both ends of the storage slot 8.

[0032] It should be noted that when loading, the gear bearing body 9 is placed in the multiple storage slots 8 inside the placement box 5 in turn, and the two positioning plates 11 are driven by the first electric telescopic rod 10 to clamp the gear bearing body 9 between the two positioning plates 11. The bottom of the gear bearing body 9 is located on the top of the supporting protrusion 12 at the bottom end of the positioning plate 11. After the installation cover 6 is connected to the placement box 5, the placement box 5 is clamped in the placement slot 4.

[0033] See also Figure 3 , Figure 4 and Figure 5 The bearing inner hole heating and positioning assembly 20 includes a support seat 21. The top of the base 1 is provided with a support seat 21 at one end of the vertical plane of the conveying platform 18, and a sliding seat 24 is slidably provided in the support seat 21. A transmission shaft 25 is rotatably provided on the top of the sliding seat 24 through a bearing, and a support plate 26 is fixedly connected to the top of the transmission shaft 25. Eight square grooves are equidistantly provided on the top of the support plate 26, and a lifting column 28 is slidably provided in the square groove. A heating mechanism 29 is provided on the top of the lifting column 28, and a resistor core 30 is provided at the end of the heating mechanism 29.

[0034] It should be noted that the heating mechanism 29 includes a resistor core 30 and a power source connected to the resistor core 30. The device is provided with a control system. The control system controls the temperature of the resistor core 30 by controlling the current of the resistor core 30, thereby controlling the heating temperature of the inner hole of the gear bearing body 9. The control system is also connected to a display screen that displays the heating temperature.

[0035] A second electric telescopic rod 31 is installed at the bottom end of the side wall of the sliding seat 24, and a push plate 32 is fixedly connected to the end of the piston rod of the second electric telescopic rod 31. The push plate 32 is located directly below the lifting column 28, and the resistor core 30 is located directly below the inner hole of the gear bearing body 9.

[0036] It should be noted that when the present invention is used, during loading, a person stands at a position outside the feeding tray 3 opposite to the bearing inner hole heating positioning assembly 20, and places the gear bearing body 9 in a plurality of storage slots 8 inside the placement box 5 in sequence. The two positioning plates 11 are driven by the first electric telescopic rod 10 to clamp the gear bearing body 9 between the two positioning plates 11. The bottom of the gear bearing body 9 is located at the top of the supporting convex plate 12 at the bottom of the positioning plate 11. After the installation cover 6 is connected to the placement box 5, the placement box 5 is clamped in the placement slot 4. The device is provided with a control system, which controls the driving motor 17 to rotate the active bevel gear 16, and the meshing connection between the active bevel gear 16 and the driven bevel gear 15 rotates the support column 14, thereby driving the feeding tray 3 to rotate, and transporting the placement box 5 to the top of the bearing inner hole heating positioning assembly 20. The resistor core 30 of a size suitable for the gear bearing body 9 is adjusted according to the size model thereof. The model of the resistor core 30 is marked on the top of the support plate 26 corresponding to the lifting column 28, and the installation motor 36 is controlled to rotate the active gear 35 The driving shaft 25 is rotated through the meshing connection between the driving gear 35 and the driven gear 34, thereby driving the support plate 26 to rotate, so that the resistor core 30 of the adapted model is located above the second electric telescopic rod 31. At this time, the second electric telescopic rod 31 is controlled to work to lift the push plate 32, and the resistor core 30 extends into the inner hole of the gear bearing body 9 to heat the gear bearing body 9. After heating of one gear bearing body 9 is completed, the servo motor 23 works, and the screw rod 22 cooperates with the sliding seat 24 to move the sliding seat 24 a certain distance. , so that the resistor core 30 is located directly below the other gear bearing body 9, the piston rod of the second electric telescopic rod 31 is extended, so that the resistor core 30 extends into the inner hole of the other gear bearing body 9 for further heating, and a temperature controller is arranged inside the placement box 5 for keeping the heated gear bearing body 9 warm. After all the heating is completed, the feed tray 3 rotates ninety degrees to transport the placement box 5 to the connecting groove 19 of the top plate 27 above the conveying platform 18. The placement box 5 is output from the conveying platform 18 through the connecting groove 19, which is convenient for manual removal and processing.

[0037] See also Figure 5A screw rod 22 is rotatably arranged in the support seat 21 through a bearing, and horizontal threaded holes are opened on both sides of the sliding seat 24. The screw rod 22 is threadedly connected in the sliding seat 24. A servo motor 23 is installed at the end of the support seat 21, and the output shaft end of the servo motor 23 is fixed to the screw rod 22. The top ends of the corresponding two side walls of the sliding seat 24 are integrally provided with connecting plates, and the connecting plates are slidably connected to the top of the support seat 21.

[0038] It should be noted that, by controlling the servo motor 23 through the control system to rotate the screw rod 22, the sliding seat 24 can be threadedly connected to the screw rod 22, so that the sliding seat 24 can slide on the top of the support seat 21, thereby adjusting the position of the resistor core 30, so that the resistor core 30 can correspond to the inner hole of the gear bearing body 9, thereby facilitating the heating of the inner hole of the gear bearing body 9.

[0039] See also Figure 5 , the eight resistor cores 30 are of different sizes.

[0040] It should be noted that the sizes of the multiple resistor cores 30 are different, and an appropriate resistor core 30 can be selected according to the gear bearing body 9 that needs to be heated to adapt to the heating of the inner holes of the gear bearing bodies 9 of different sizes.

[0041] See also Figure 4 A driven gear 34 is installed on the outside of the transmission shaft 25, a mounting motor 36 is fixedly installed on the top of the sliding seat 24, and a driving gear 35 is fixedly connected to the output shaft end of the mounting motor 36, and the driving gear 35 is meshed and connected with the driven gear 34.

[0042] It should be noted that the driving gear 35 can be driven to rotate by controlling the installation motor 36 , and the transmission shaft 25 can be rotated through the meshing connection between the driving gear 35 and the driven gear 34 , thereby controlling the rotation of the feeding tray 3 .

[0043] See also Figure 3 The top of the base 1 is rotatably connected to a support column 14 through a bearing, and a driven bevel gear 15 is fixedly installed on the outer side of the support column 14. A driving motor 17 is fixedly installed on the top of the base 1, and an active bevel gear 16 is fixedly connected to the output shaft end of the driving motor 17. The active bevel gear 16 and the driving motor 17 are meshingly connected.

[0044] It should be noted that the control driving motor 17 is operated to rotate the active bevel gear 16, and the meshing connection between the active bevel gear 16 and the driven bevel gear 15 is used to rotate the support column 14, thereby driving the feed tray 3 to rotate, so that the placement box 5 can be transported to the top of the bearing inner hole heating positioning assembly 20.

[0045] The positioning plate 11 is integrally provided with a supporting convex plate 12 at the bottom end of the arc surface, and the gear bearing body 9 is located on the top of the supporting convex plate 12 . The width of the supporting convex plate 12 is smaller than the thickness of the gear bearing body 9 .

[0046] It should be noted that the support protrusion 12 can support the gear bearing body 9, and the thickness of the support protrusion 12 is set to be smaller than the thickness of the gear bearing body 9, so that the support protrusion 12 will not hinder the resistor core 30 from entering the inner hole of the gear bearing body 9.

[0047] The bottom ends of the corresponding two side walls of the lifting column 28 are integrally provided with protruding rods 33, and the inner wall of the square groove at the top of the support plate 26 is symmetrically provided with sliding grooves. The protruding rods 33 are slidably connected in the sliding grooves, and the tops of the protruding rods 33 pass through the sliding grooves, and a limiting plate is integrally provided at one end of the protruding rods 33 located above the support plate 26.

[0048] It should be noted that the setting of the protruding rod 33 can ensure the stable lifting and lowering of the lifting column 28 on the one hand, and can limit the lifting column 28 on the other hand. The limiting plate at the top of the protruding rod 33 blocks the top of the support plate 26 to prevent the lifting column 28 from completely sliding down and separating from the support plate 26.

[0049] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0051] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0052] 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 gear bearing inner hole heating device, characterized in that: The invention comprises a base (1), wherein both ends of the top of the base (1) are symmetrically fixed with vertical plates (2), and the top of the vertical plates (2) is fixedly connected with an annular top plate (27), and the top of the top plate (27) is rotatably connected with a feeding tray (3), and the top of the feeding tray (3) is provided with four placement grooves (4) at equal intervals, and a placement box (5) is arranged in the placement groove (4), and the bottom of the placement box (5) is provided with an opening, and the inside of the placement box (5) is provided with five storage grooves (8) at equal intervals, and the storage grooves (8) are provided with gears. A wheel bearing body (9), a vertical plate (2) is provided at one end of the base (1), a vertical drop groove is provided at the top of the top plate (27), and the drop groove is located directly below the placement groove (4) and directly above the conveying platform (18), a bearing inner hole heating positioning component (20) is provided at the top of the base (1) on one side of the vertical surface of the conveying platform (18), and a connecting groove (19) is provided at the top of the top plate (27) at one end vertical to the drop groove, and the connecting groove (19) is located directly below the placement groove (4).

2. A gear bearing inner hole heating device according to claim 1, characterized in that: A mounting cover (6) is installed on the top of the placement box (5), and a pull block (13) is provided on the top of the mounting cover (6). A positioning plate (11) is symmetrically slidably arranged in the storage slot (8), and a gear bearing body (9) is arranged between the two positioning plates (11) in the storage slot (8). The positioning plate (11) is located on one side of the gear bearing body (9) and is an arc-shaped structure. The corresponding two inner walls of the storage slot (8) are provided with a slide groove (7), and a slide rod is slidably connected in the slide groove (7). The two adjacent positioning plates (11) are fixedly connected by the slide rod. The corresponding two side walls of the placement box (5) are provided with a first electric telescopic rod (10), and the piston rod end of the first electric telescopic rod (10) extends into the placement box (5) and is fixedly connected to the positioning plates (11) at both ends of the storage slot (8).

3. The gear bearing inner hole heating device according to claim 1, characterized in that: The bearing inner hole heating and positioning assembly (20) comprises a support seat (21), the top of the base (1) is located at one end of the vertical surface of the conveying platform (18) and is provided with a support seat (21), and a sliding seat (24) is slidably provided in the support seat (21), a transmission shaft (25) is rotatably provided on the top of the sliding seat (24) through a bearing, and a support plate (26) is fixedly connected to the top of the transmission shaft (25), and eight square grooves are equidistantly provided on the top of the support plate (26), and the square grooves are provided with A lifting column (28) is provided on the sliding seat, a heating mechanism (29) is provided on the top of the lifting column (28), and a resistor core (30) is provided at the end of the heating mechanism (29). A second electric telescopic rod (31) is installed at the bottom end of the side wall of the sliding seat (24), and a push plate (32) is fixedly connected to the piston rod end of the second electric telescopic rod (31), and the push plate (32) is located directly below the lifting column (28), and the resistor core (30) is located directly below the inner hole of the gear bearing body (9).

4. A gear bearing inner hole heating device according to claim 3, characterized in that: A screw rod (22) is rotatably arranged in the support seat (21) via a bearing, horizontal threaded holes are provided on both sides of the sliding seat (24), the screw rod (22) is threadedly connected in the sliding seat (24), a servo motor (23) is installed at the end of the support seat (21), and the output shaft end of the servo motor (23) is fixed to the screw rod (22), and the top ends of the corresponding two side walls of the sliding seat (24) are integrally provided with connecting plates, and the connecting plates are slidably connected to the top of the support seat (21).

5. The gear bearing inner hole heating device according to claim 3, characterized in that: The eight resistor cores (30) are of different sizes.

6. The gear bearing inner hole heating device according to claim 4, characterized in that: A driven gear (34) is installed on the outside of the transmission shaft (25), a mounting motor (36) is fixedly installed on the top of the sliding seat (24), and a driving gear (35) is fixedly connected to the end of the output shaft of the mounting motor (36), and the driving gear (35) is meshedly connected with the driven gear (34).

7. The gear bearing inner hole heating device according to claim 1, characterized in that: The top of the base (1) is rotatably connected to a support column (14) via a bearing, and a driven bevel gear (15) is fixedly installed on the outer side of the support column (14); a driving motor (17) is fixedly installed on the top of the base (1), and an active bevel gear (16) is fixedly connected to the end of the output shaft of the driving motor (17); the active bevel gear (16) and the driving motor (17) are meshingly connected.

8. The gear bearing inner hole heating device according to claim 2, characterized in that: The positioning plate (11) is integrally provided with a supporting convex plate (12) at the bottom end of the arc-shaped surface, the gear bearing body (9) is located on the top of the supporting convex plate (12), and the width of the supporting convex plate (12) is smaller than the thickness of the gear bearing body (9).

9. The gear bearing inner hole heating device according to claim 3, characterized in that: The bottom ends of the corresponding two side walls of the lifting column (28) are integrally provided with convex rods (33), and the inner wall of the square groove at the top of the support plate (26) is symmetrically provided with sliding grooves, and the convex rods (33) are slidably connected in the sliding grooves, and the top of the convex rod (33) passes through the sliding groove, and a limit plate is integrally provided at one end of the convex rod (33) located above the support plate (26).

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