Reducer gear and rotating shaft hot assembly device

Abstract

The invention relates to the technical field of metal processing, and discloses a speed reducer gear and rotating shaft hot assembly device which comprises a fixing bottom plate, a transmission frame arranged at the top end of the fixing bottom plate and a clamping base, a fixing plate is installed at the top of the fixing bottom plate, the transmission frame and the clamping base are both installed at the top end of the fixing plate, and the clamping base is used for positioning and clamping a bearing. A pair of telescopic rods is installed at the top of the transmission frame, a limiting plate is installed at the top ends of the telescopic rods, an auxiliary positioning plate is arranged at the top end of the limiting plate, a clamping frame is arranged at the bottom of the limiting plate and used for limiting the reduction gear, a pair of sliding grooves are formed in the top end of the limiting plate, and the auxiliary positioning plate is movably clamped in the sliding grooves; the transmission wheel penetrates through the limiting plate; the clamping frame is mounted at the bottom of the transmission wheel; compared with the prior art, the overall assembly efficiency can be improved, and the situation that the temperature of the gear will be below the required temperature for expansion of the inner ring is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a heat assembly device for a reducer gear and a rotating shaft. Background Art

[0002] Heat assembly is a method of heating a part to expand it and thereby facilitate its assembly to another part.

[0003] Thermal assembly is often used in the installation of interference fit, such as the installation of bearings, gears and other components. During the thermal assembly process, the temperature needs to be controlled within a certain range, so as to change the interference between the inner hole of the gear and the shaft by a few or more wires, so that the gear and the shaft can be quickly assembled and connected. After cooling, they can be connected with the help of the interference fit. However, uneven cooling speed of parts after assembly may cause deformation, or low assembly efficiency of the equipment, resulting in the temperature of the gear during the assembly process being lower than the expansion requirement of the inner ring, affecting the processing quality of the equipment. For this reason, we propose a reducer gear and shaft thermal assembly device to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a heat-assembly device for a reducer gear and a rotating shaft to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat assembly device for reducer gear and rotating shaft, comprising a fixed base plate, a transmission frame and a clamping base arranged at the top of the fixed base plate, a fixed plate is installed on the top of the fixed base plate, the transmission frame and the clamping base are both installed on the top of the fixed plate, the clamping base is used to position and clamp the bearing, a pair of telescopic rods are installed on the top of the transmission frame, a limiting plate is installed on the top of the telescopic rod, an auxiliary positioning plate is provided on the top of the limiting plate, a clamping frame is provided at the bottom of the limiting plate, and the clamping frame is used to limit the reduction gear;

[0006] A pair of sliding grooves are provided at the top of the limit plate, and the auxiliary positioning plate is movably clamped in the sliding grooves. A transmission wheel is rotatably provided on the limit plate, and the transmission wheel passes through the limit plate. The clamping frame is installed at the bottom of the transmission wheel. When the gear and the rotating shaft need to be press-fitted, the heated gear can be clamped at the bottom of the clamping frame, and the gear can be positioned in cooperation with the positioning rod, and the rotating shaft can be clamped in cooperation with the clamping base. The gear and the rotating shaft can be quickly positioned and installed, and the overall installation efficiency can be improved.

[0007] Preferably, a connecting plate is installed on the top of the limiting plate, and a control motor is installed on the bottom of the connecting plate. A transmission belt is installed on the output end of the control motor, and one end of the transmission belt is clamped on the transmission wheel.

[0008] Preferably, a circular groove is formed on the auxiliary positioning plate, a circular hole is formed on the limit plate, and the circular hole and the clamping frame can be concentrically arranged, a rectangular frame is installed on the top of the auxiliary positioning plate, a fixed shaft is installed on the bottom of the inner wall of the rectangular frame, a positioning rod is movably provided on the bottom of the fixed shaft, the bottom of the positioning rod is conical, the positioning rod can pass through the circular hole and be located between the clamping frames, the positioning rod can play a limiting role to prevent eccentric adjustment during gear clamping resulting in inefficiency.

[0009] Preferably, a plurality of pushing rods are installed at the bottom of the clamping frame, a positioning ring is installed at the bottom of the pushing rod, a through groove is opened inside the clamping frame, the positioning ring corresponds to the position of the through groove, a plurality of clamping claws are movably inserted on the side wall of the positioning ring, the clamping claws are used to limit and clamp the gear, the pushing rod can drive the positioning ring to move, can play a role of auxiliary transportation, and clamp the gear on the rotating shaft.

[0010] Preferably, the clamping claws are assembled by a pair of L-shaped plates, a movable plug rod is installed between the clamping claws, and a movable plug hole is opened on the L-shaped plate, and the movable plug rod is inserted inside the movable plug hole. The gap of the clamping claws can be adjusted, and different types of gears can be clamped, and the positioning can be adjusted according to different types of gears.

[0011] Preferably, a positioning pressure plate is movable inside the clamping claw, and the positioning pressure plate is arc-shaped and elastic. A thermal insulation pad is installed on the inner wall of the positioning pressure plate. The positioning pressure plate is used to rest against the outer teeth of the gear during the limiting process to assist in limiting the position, and can assist in positioning the gear to reduce the accidental eccentricity of the gear during the clamping process.

[0012] Preferably, a lifting plate is installed on the top of the clamping base, a plurality of compression rods are provided at the bottom of the lifting plate, and the compression rods are installed on the clamping base, a fixed vertical rod is installed on the top of the lifting plate, and a limiting ring is inserted on the fixed vertical rod, a plurality of fixed end blocks are installed on the side wall of the limiting ring, a sliding groove is opened inside the fixed end block, and a support shaft is movably provided inside the sliding groove, a reset rod is installed between the support shaft and one side of the sliding groove, and a positioning ball is installed on the top of the support shaft for auxiliary support and positioning during the gear installation process, and the positioning ball can be against the bottom of the gear during the assembly process for support and positioning;

[0013] A fixing plate is installed at the bottom of the clamping base, and a clamping shaft is movably provided on the fixing plate for clamping and positioning the bearing, and can clamp the rotating shaft to ensure stability during the installation process.

[0014] Preferably, a reset ring is installed at the bottom of the support shaft, and an air pressure tube is installed at the bottom of the reset ring. The bottom of the air pressure tube is clamped on the lifting plate. A fixing hole is opened on the side wall of the air pressure tube, and a one-way air inlet pipe is installed inside the fixing hole to play a supplementary role. An adjusting tube is installed on the reset ring, and a memory metal wire is provided inside the adjusting tube to adjust its own angle. The adjusting tube is connected with the air pressure tube, and a pressure relief tube is installed on the top of the adjusting tube. When the pressure inside the air pressure tube reaches a certain value, it can be discharged along the pressure relief tube, so as to cool the assembled rotating shaft and gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can move the auxiliary positioning plate during the clamping process, move the positioning rod between the through grooves, and place the conical movable clamp against the inner ring of the gear, so that the gear and the positioning rod are in a concentric state, which plays a role in positioning, improves the overall assembly efficiency, and reduces the situation where the temperature of the gear is below the required temperature for the expansion of the inner ring;

[0017] 2. The present invention can heat the inner ring of the gear to a corresponding temperature range during the gear limiting process. The operator can clamp the gear at the bottom of the clamping frame with the help of tools or heat-insulating gloves. During the clamping process, the edge of the gear can be clamped and positioned with the help of the clamping claws and the positioning plate, which plays a positioning role and can reduce the offset during the clamping process.

[0018] 3. The present invention can keep the gear in a horizontal state during the assembly process by allowing the gear to rest against the positioning ball on the top of the support shaft, thereby reducing the unexpected situation of friction and wear during the transfer process;

[0019] 4. The present invention can change the internal air pressure through the air pressure tube under the squeezing action of the reset ring at the bottom of the support shaft. When the support shaft is pressed to the bottom, the rotating shaft and the gear are also assembled. The air pressure inside the air pressure tube reaches a certain value and can be discharged along the pressure relief pipe. The inner ring of the gear can be evenly cooled and the connection can be evenly cooled, reducing the inconsistency of the cooling speed. 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 transmission frame structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the clamping frame of the present invention;

[0024] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 6 This is a schematic diagram of the top structure of the clamping base of the present invention;

[0026] Figure 7 It is a schematic diagram of the local structure of the fixed end block of the present invention;

[0027] In the figure: 1. fixed base plate; 2. transmission frame; 3. auxiliary positioning plate; 4. clamping frame; 5. clamping base; 21. telescopic rod; 22. control motor; 23. transmission belt; 24. transmission wheel; 25. limit plate; 31. rectangular frame; 32. fixed shaft; 33. positioning rod; 41. push rod; 42. positioning ring; 43. clamping claw; 431. movable rod; 44. positioning pressure plate; 51. lifting plate; 52. limit ring; 53. fixed end block; 54. reset ring; 55. air pressure tube; 551. adjustment tube; 56. support shaft; 561. positioning ball. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 7 The present invention provides a technical solution: a heat assembly device for a reducer gear and a rotating shaft, comprising a fixed base plate 1, a transmission frame 2 and a clamping base 5 arranged at the top of the fixed base plate 1, a fixed plate is installed on the top of the fixed base plate 1, the transmission frame 2 and the clamping base 5 are both installed on the top of the fixed plate, the clamping base 5 is used to position and clamp the bearing, a pair of telescopic rods 21 are installed on the top of the transmission frame 2, a limiting plate 25 is installed on the top of the telescopic rod 21, an auxiliary positioning plate 3 is arranged on the top of the limiting plate 25, a clamping frame 4 is arranged at the bottom of the limiting plate 25, and the clamping frame 4 is used to limit the reduction gear;

[0030] A pair of sliding grooves are provided at the top of the limiting plate 25, and the auxiliary positioning plate 3 is movably clamped inside the sliding grooves. A transmission wheel 24 is rotatably provided on the limiting plate 25, and the transmission wheel 24 passes through the limiting plate 25. The clamping frame 4 is installed at the bottom of the transmission wheel 24. When it is necessary to press-fit the gear and the rotating shaft, the heated gear can be clamped at the bottom of the clamping frame 4, and the gear can be positioned in cooperation with the positioning rod 33, and the rotating shaft can be clamped in cooperation with the clamping base 5, so that the gear and the rotating shaft can be quickly positioned and installed, which can improve the overall installation efficiency.

[0031] like Figure 2 As shown, a connecting plate is installed on the top of the limit plate 25, and a control motor 22 is installed on the bottom of the connecting plate. A transmission belt 23 is installed on the output end of the control motor 22. One end of the transmission belt 23 is clamped on the transmission wheel 24. The operation of the control motor 22 can drive the transmission belt 23 to move, and the position of the clamping frame 4 can be adjusted to facilitate the feeding and clamping of the gear.

[0032] like Figure 3 As shown, in order to reduce the situation where the gear is offset during the clamping process and needs to be adjusted multiple times, a circular groove is provided on the auxiliary positioning plate 3, and a circular hole is provided on the limit plate 25, and the circular hole and the clamping frame 4 can be arranged concentrically, and a rectangular frame 31 is installed on the top of the auxiliary positioning plate 3, and a fixed shaft 32 is installed at the bottom of the inner wall of the rectangular frame 31, and a positioning rod 33 is movably provided at the bottom of the fixed shaft 32. The bottom of the positioning rod 33 is conical, and the positioning rod 33 can pass through the circular hole and be located between the clamping frames 4. The positioning rod 33 can be inserted into the inner hole of the gear clamped inside the clamping frame 4, which can play a limiting role and improve the clamping efficiency of the equipment, and during the clamping process, a cleaning ring can be clamped on the inner wall of the positioning rod 33 to reduce the situation where debris remains on the inner wall of the gear and ensure the processing quality of the equipment.

[0033] like Figure 4 As shown, in order to ensure the stability of the equipment clamping, a plurality of pushing rods 41 are installed at the bottom of the clamping frame 4, a positioning ring 42 is installed at the bottom of the pushing rod 41, a through groove is opened inside the clamping frame 4, the positioning ring 42 corresponds to the position of the through groove, and a plurality of clamping claws 43 are movably inserted on the side wall of the positioning ring 42. The clamping claws 43 are used to limit the clamping of the gear. The clamping claws 43 can be adjusted according to the outer diameter of the gear, and can clamp and limit the gears of different models to ensure the stability of subsequent processing.

[0034] like Figure 5As shown, during the clamping process, the gear may be offset. The clamping claws 43 are assembled by a pair of L-shaped plates, a movable plug rod 431 is installed between the clamping claws 43, and a movable plug hole is opened on the L-shaped plate. The movable plug rod 431 is inserted into the movable plug hole. The gap of the clamping claws 43 can be adjusted, and different types of gears can be clamped. The upper and lower ends of the gear can be clamped to ensure stability and prevent affecting the subsequent assembly quality.

[0035] like Figure 5 As shown, in order to reduce the unexpected wear of the outer teeth of the gear during the clamping process, a positioning pressure plate 44 is movable inside the clamping claw 43, and the positioning pressure plate 44 is arc-shaped and elastic. A thermal insulation pad is installed on the inner wall of the positioning pressure plate 44. The positioning pressure plate 44 is used to press against the outer teeth of the gear during the limiting process to assist in limiting. During the clamping process, the positioning pressure plate 44 can be pressed against the outer teeth to play a buffering role, and the thermal insulation pad can reduce the situation where the overall temperature of the clamping claw 43 is too high, and reduce the situation where the outer teeth of the gear are worn during subsequent processing and cause defective products.

[0036] like Figure 7 As shown, for the sake of stability during the assembly process, a lifting plate 51 is installed on the top of the clamping base 5, a plurality of compression rods are arranged at the bottom of the lifting plate 51, and the compression rods are installed on the clamping base 5, a fixed vertical rod is installed on the top of the lifting plate 51, and a limiting ring 52 is inserted on the fixed vertical rod, a plurality of fixed end blocks 53 are installed on the side wall of the limiting ring 52, a sliding groove is opened inside the fixed end block 53, and a support shaft 56 is movably arranged inside the sliding groove, a reset rod is installed between the support shaft 56 and one side of the sliding groove, a positioning ball 561 is installed on the top of the support shaft 56 for auxiliary support and positioning during the installation of the gear, and the gear can be against the positioning ball 561 on the top of the support shaft 56 during the assembly process, so that the gear can be in a horizontal state during the assembly process, thereby reducing the accidental situation of friction and wear during the transfer process;

[0037] A fixed plate is installed at the bottom of the clamping base 5, and a clamping shaft is movably provided on the fixed plate for clamping and positioning the bearing. The position of the fixed plate can be adjusted, and the eccentric shaft can be clamped and positioned.

[0038] As shown in Figure 6, in order to ensure the processing efficiency of the equipment, a reset ring 54 is installed at the bottom of the support shaft 56, and a pneumatic tube 55 is installed at the bottom of the reset ring 54. The bottom of the pneumatic tube 55 is clamped on the lifting plate 51. A fixing hole is opened on the side wall of the pneumatic tube 55, and a one-way air inlet pipe is installed inside the fixing hole. An adjusting tube 551 is installed on the reset ring 54. A memory metal wire is arranged inside the adjusting tube 551, which can adjust its own angle, and the pressure relief pipe of the adjusting tube 551 can be aligned with the connection between the gear and the rotating shaft. The adjusting tube 551 is connected with the pneumatic tube 55, and a pressure relief pipe is installed on the top of the adjusting tube 551. The pneumatic tube 55 can 6 Under the squeezing action of the reset ring 54 at the bottom, the internal air pressure changes. When the support shaft 56 is pressed to the bottom, the rotating shaft and the gear are also assembled. The air pressure inside the air pressure tube 55 reaches a certain value and can be discharged along the pressure relief pipe. The inner ring of the gear can be evenly cooled by air. After the support shaft 56 is reset, the air pressure tube 55 can be reset under its own elastic action. External gas can enter the air pressure tube 55 through the one-way air inlet pipe. While ensuring the cooling efficiency, it also avoids the unexpected situation that the uneven cooling speed of the parts may cause deformation or stress concentration, and can ensure the overall processing quality of the equipment.

[0039] Working principle: first, when the gear and the rotating shaft need to be press-fitted, the heated gear can be clamped at the bottom of the clamping frame 4, the gear can be positioned with the help of the positioning rod 33, and the rotating shaft can be clamped with the clamping base 5, so that the gear and the rotating shaft can be quickly positioned and installed, which can improve the overall installation efficiency. In the process of limiting the gear, the inner ring of the gear can be heated to the corresponding temperature range, and the operator can clamp the gear at the bottom of the clamping frame 4 with the help of tools or heat-insulating gloves. In the clamping process, the edge of the gear can be clamped and positioned with the help of the clamping claws 43 and the positioning pressure plate 44, which plays a positioning role. In the clamping process, the auxiliary positioning plate 3 can be moved, the positioning rod 33 can be moved between the through grooves, and the conical movable clamp can be pressed against the inner ring of the gear, so that the gear and the positioning rod 33 can be in a concentric state, which plays a positioning role and reduces the offset in the subsequent assembly process.

[0040] Then, the control motor 22 is operated to make the clamping frame 4 move as a whole, so that it can be located directly above the clamping base 5, the rotating shaft can correspond to the position of the gear, and the auxiliary positioning plate 3 is retracted. With the help of the lifting plate 51 and the push rod 41, the gear and the rotating shaft can be clamped together. During the assembly process, the gear can be against the positioning ball 561 at the top of the support shaft 56, so that the gear can be in a horizontal state during the assembly process, reducing the accidental friction and wear during the transfer process.

[0041] Finally, after the shaft is assembled, the air pressure in the air pressure tube 55 can change under the squeezing action of the reset ring 54 at the bottom of the support shaft 56. When the support shaft 56 is pressed to the bottom, the rotating shaft and the gear are also assembled. The air pressure inside the air pressure tube 55 reaches a certain value and can be discharged along the pressure relief pipe. The inner ring of the gear can be evenly cooled by air. After the support shaft 56 is reset, the air pressure tube 55 can be reset under its own elastic action, and external gas can enter the air pressure tube 55 along the one-way air inlet pipe.

[0042] 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 heat-assembly device for a reducer gear and a rotating shaft, comprising a fixed base plate (1), a transmission frame (2) arranged at the top of the fixed base plate (1), and a clamping base (5), characterized in that: A fixing plate is installed on the top of the fixing base plate (1); the transmission frame (2) and the clamping base (5) are both installed on the top of the fixing plate; the clamping base (5) is used to position and clamp the bearing; a pair of telescopic rods (21) are installed on the top of the transmission frame (2); a limiting plate (25) is installed on the top of the telescopic rod (21); an auxiliary positioning plate (3) is provided on the top of the limiting plate (25); a clamping frame (4) is provided on the bottom of the limiting plate (25); the clamping frame (4) is used to limit the reduction gear; A pair of sliding grooves are formed at the top of the limiting plate (25), the auxiliary positioning plate (3) is movably clamped inside the sliding grooves, a transmission wheel (24) is rotatably provided on the limiting plate (25), the transmission wheel (24) passes through the limiting plate (25), and the clamping frame (4) is mounted at the bottom of the transmission wheel (24).

2. The heat-assembly device for reducer gear and shaft according to claim 1, characterized in that: A connecting plate is installed on the top of the limit plate (25), and a control motor (22) is installed on the bottom of the connecting plate. A transmission belt (23) is installed on the output end of the control motor (22), and one end of the transmission belt (23) is clamped on the transmission wheel (24).

3. The heat-assembly device for reducer gear and shaft according to claim 1, characterized in that: The auxiliary positioning plate (3) is provided with a circular groove, the limiting plate (25) is provided with a circular hole, and the circular hole and the clamping frame (4) can be arranged concentrically, a rectangular frame (31) is installed at the top of the auxiliary positioning plate (3), a fixed shaft (32) is installed at the bottom of the inner wall of the rectangular frame (31), and a positioning rod (33) is movably clamped at the bottom of the fixed shaft (32), the bottom of the positioning rod (33) is conical, and the positioning rod (33) can pass through the circular hole and be located between the clamping frames (4).

4. The heat-assembly device for reducer gear and shaft according to claim 1, characterized in that: A plurality of push rods (41) are mounted at the bottom of the clamping frame (4), a positioning ring (42) is mounted at the bottom of the push rods (41), a through slot is provided inside the clamping frame (4), the positioning ring (42) corresponds to the position of the through slot, a plurality of clamping claws (43) are movably inserted on the side wall of the positioning ring (42), and the clamping claws (43) are used to limit and clamp the gear.

5. The heat-assembly device for reducer gear and shaft according to claim 4, characterized in that: The clamping claws (43) are assembled from a pair of L-shaped plates, a movable plug rod (431) is installed between the clamping claws (43), and a movable plug hole is provided on the L-shaped plate, the movable plug rod (431) is inserted into the movable plug hole, and the gap of the clamping claws (43) can be adjusted, so that gears of different models can be clamped.

6. The heat-assembly device for reducer gear and shaft according to claim 5, characterized in that: A positioning pressure plate (44) is movably clamped inside the clamping claw (43); the positioning pressure plate (44) is arc-shaped and elastic; a heat insulating pad is installed on the inner wall of the positioning pressure plate (44); the positioning pressure plate (44) is used to abut against the outer teeth of the gear during the limiting process to assist in limiting.

7. The heat-assembly device for reducer gear and shaft according to claim 1, characterized in that: A lifting plate (51) is installed on the top of the clamping base (5), a plurality of compression rods are provided at the bottom of the lifting plate (51), and the compression rods are installed on the clamping base (5), a fixed vertical rod is installed on the top of the lifting plate (51), and a limiting ring (52) is inserted on the fixed vertical rod, and a plurality of fixed end blocks (53) are installed on the side wall of the limiting ring (52), a sliding groove is opened inside the fixed end block (53), and a support shaft (56) is movably provided inside the sliding groove, a reset rod is installed between the support shaft (56) and one side of the sliding groove, and a positioning ball (561) is installed on the top of the support shaft (56) for auxiliary support and positioning during the gear installation process; A fixing plate is installed at the bottom of the clamping base (5), and a clamping shaft is movably provided on the fixing plate for clamping and positioning the bearing.

8. The heat-assembly device for reducer gear and shaft according to claim 7, characterized in that: A reset ring (54) is installed at the bottom of the support shaft (56), and an air pressure tube (55) is installed at the bottom of the reset ring (54). The bottom of the air pressure tube (55) is clamped on the lifting plate (51). A fixing hole is opened on the side wall of the air pressure tube (55), and a one-way air inlet pipe is installed inside the fixing hole. An adjusting tube (551) is installed on the reset ring (54), and a memory metal wire is provided inside the adjusting tube (551) so that its angle can be adjusted. The adjusting tube (551) is connected with the air pressure tube (55), and a pressure relief tube is installed on the top of the adjusting tube (551).

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