Speed reducer with bearing abrasion early warning function

Abstract

The invention discloses a speed reducer with a bearing abrasion early warning function, and relates to the technical field of speed reducers, the speed reducer comprises a speed reducer body, a driving shaft and a motor, the driving shaft is rotationally connected to the speed reducer body, the motor is fixedly connected with the speed reducer body, and an output shaft of the motor can drive the driving shaft to rotate; the end, close to the driving shaft, of the reducer body is a shaft diameter end, a bearing cavity is formed in the shaft diameter end, and a sealing assembly is arranged on the side wall, facing the driving shaft, of the shaft diameter end of the reducer body. By arranging structures such as an abutting ring, a sleeve groove, a sliding groove ring, an alarm, an abutting frame and switches, shaking of a driving shaft enables the abutting ring to shake relative to the sliding groove ring, shaking of the abutting ring can continuously push the abutting frame attached to the abutting ring, the abutting frame is pushed to move towards the interior of a detection cavity, meanwhile, an extension spring presses the corresponding switch together, and therefore the detection accuracy is improved. And then preliminary trigger detection is carried out on the shaking of the driving shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of reducers, and in particular to a reducer with bearing wear warning function. Background Art

[0002] Reducers are often used as reduction transmission devices between the prime mover and the working machine. They play the role of matching speed and transmitting torque between the prime mover and the working machine or actuator. They are widely used in modern machinery.

[0003] Reducers are generally used for transmission equipment with low speed and high torque. However, after the reducer is used for a long time, the output shaft of the reducer will become loose, and the output shaft will shake when rotating. The reason for the shaking is mostly due to bearing wear, and the bearing wear is mainly due to too little lubricating oil, which cannot form an oil film between the parts in the bearing to reduce wear. In addition, after the bearing is used for a long time, the lubricating oil in the bearing is mixed with too much metal debris, which will cause wear between the parts in the bearing. When the bearing is excessively worn, gaps will appear between its parts, causing the reducer output shaft to shake, which needs to be repaired and replaced in time. Therefore, a reducer with bearing wear warning is proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a reducer with bearing wear warning.

[0005] The solution is as follows: A reducer with bearing wear warning, comprising a reducer body, a drive shaft and a motor, wherein the drive shaft is rotatably connected to the reducer body, the motor is fixedly connected to the reducer body, one end of the reducer body close to the drive shaft is an axial diameter end, a bearing cavity is provided in the axial diameter end, a sealing component is provided on the axial diameter end of the reducer body, and an alarm is provided on the reducer body; The sealing assembly includes a contact ring sleeved on the outside of the driving shaft, a fixed cover is provided on the outside of the contact ring, the fixed cover is detachably connected to the shaft diameter end by bolts, a slide groove ring is fixedly connected to the fixed cover, a sleeve groove is provided on the outer wall of the contact ring, the slide groove ring extends into the sleeve groove, a spring 2 is connected between the sleeve groove and the slide groove ring, an annular plate is fixedly connected to the fixed cover, a plurality of detection seats are fixedly connected at equal intervals on the outer circumference of the annular plate, a detection cavity is provided in the detection seat, recovery grooves are connected at positions corresponding to the detection cavity on the annular plate, a switch is fixedly connected to the inner wall of the detection cavity, a contact frame is slidably connected in the detection cavity, a spring 1 is provided between the contact frame and the detection cavity, and the contact frame extends out of the adjacent recovery grooves and conflicts with the contact ring.

[0006] Furthermore, a bearing assembly is arranged inside the bearing cavity of the reducer body, and the bearing assembly includes a bearing seat fixedly connected to the bearing cavity, an inner ring is sleeved on the outer surface of the drive shaft, a plurality of symmetrical balls are arranged on the outer surface of the inner ring, an outer ring is arranged on the outer side of the inner ring, the outer ring is rollingly connected to the balls, the outer ring is arranged on the inner side of the bearing seat, and a circular hole is opened on the upper and lower sides of the outer ring.

[0007] Furthermore, an oil filling assembly is provided on the reducer body, and the oil filling assembly includes an oil inlet hole opened on the top of the reducer body, the oil inlet hole extends to the upper end of the bearing seat, the oil inlet hole corresponds to the position of the circular hole on the top, the top of the reducer body is detachably connected with an oil filling pipe by bolts, the position of the oil filling pipe corresponds to the oil inlet hole, an end of the oil filling pipe close to the oil inlet hole is threadedly connected with an oil cap, a one-way valve is provided inside the oil filling pipe, a socket is fixedly connected to the reducer body by bolts, an end of the oil filling pipe away from the oil cap is clamped with the socket, an electric telescopic rod is fixedly connected to the oil filling pipe, a connecting rod is fixedly connected to the telescopic shaft of the electric telescopic rod, a piston rod is fixedly connected to the connecting rod, and an end of the piston rod away from the connecting rod slides in the oil filling pipe.

[0008] Furthermore, two symmetrically arranged brackets are fixedly connected to the connecting rod, a plug sheet is fixedly connected to the bracket, a symmetrical plug socket is fixedly connected to the side wall of the reducer body facing the plug sheet, and a socket corresponding to the plug sheet is provided on the plug socket.

[0009] Furthermore, a collecting assembly for collecting waste lubricating oil is provided at the bottom of the reducer body, and the collecting assembly includes an oil outlet hole opened on the reducer body, the oil outlet hole extends to the lower end of the bearing seat, the oil outlet hole corresponds to the position of the circular hole at the bottom, and the bottom of the reducer body is detachably connected to a collecting box by bolts, and the collecting box is connected to the oil outlet hole.

[0010] Furthermore, the oil filling pipe is composed of a long horizontal pipe and a short vertical pipe. The short vertical pipe of the oil filling pipe is connected to the oil inlet hole, and the short vertical pipe of the oil filling pipe is connected to the top bolt of the reducer body. A one-way valve is arranged in the short vertical pipe of the oil filling pipe. An end of the long horizontal pipe of the oil filling pipe close to the oil inlet hole is threadedly connected with an oil cap. An electric telescopic rod is fixedly arranged on the long horizontal pipe of the oil filling pipe, and a piston rod is slidably arranged in the long horizontal pipe of the oil filling pipe, and the long horizontal pipe of the oil filling pipe is clamped with a socket.

[0011] In summary, the beneficial effects of the present invention are as follows: By setting structures such as a resistance ring, a sleeve groove, a slide groove ring, an alarm, a resistance frame and a switch, the vibration of the driving shaft causes the resistance ring to shake relative to the slide groove ring, and the shaking of the resistance ring will also continuously push the resistance frame fitted therewith, so that the resistance frame is pushed and moves into the detection cavity, and at the same time, the stretching spring presses the corresponding switch together, thereby performing a preliminary trigger detection on the vibration of the driving shaft; By setting structures such as an electric telescopic rod, a piston rod and an oil filling pipe, when the switch is resisted by the resistance frame, the electric telescopic rod will be controlled to retract through an external controller, and the contraction of the telescopic shaft of the electric telescopic rod will drive the piston rod to move toward the end close to the oil cover in the horizontal long tube of the oil filling pipe through the connecting rod. During the movement of the piston rod, the lubricating oil in the oil filling pipe will be squeezed, and the one-way valve will open at this time, and the lubricating oil will enter the inside of the oil inlet hole, and the lubricating oil will enter between the outer ring and the inner ring through the circular hole, so as to lubricate the ball between the outer ring and the inner ring, thereby preventing wear and jamming caused by too little lubricating oil in the bearing assembly, and reducing jamming of the bearing assembly; By setting structures such as the bracket, the plug sheet and the plug socket, when the lubricating oil in the oil filling pipe is completely filled, if the rotation of the drive shaft still shakes, causing the switch to be resisted by the resistance frame, the telescopic shaft of the electric telescopic rod continues to contract, and the telescopic shaft of the electric telescopic rod will drive the bracket to approach the plug socket through the connecting rod. At this time, the plug sheet on the bracket will be inserted into the socket on the plug socket, and the electric telescopic rod will stop running through the external controller, and the alarm will start and continue to emit a warning sound, so as to remind the staff through the warning sound, so that the staff can carry out maintenance in time to avoid loosening of internal parts of the reducer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the fixed cover, the detection seat and the abutment ring and other components of the present invention; Figure 3 It is a three-dimensional schematic diagram of the detection chamber, switch, and contact frame of the present invention; Figure 4 It is a three-dimensional schematic diagram of the components such as the interference ring and the sleeve groove of the present invention; Figure 5 It is a three-dimensional schematic diagram of the bearing seat, oil inlet hole, oil outlet hole and other components of the present invention; Figure 6 It is a three-dimensional schematic diagram of the oil filling pipe, the circular hole and the fixing cover of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the structure enlargement in the middle; Figure 8 It is a three-dimensional schematic diagram of the oil filling pipe, the electric telescopic rod and the bracket and other components of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the piston rod, the clamping seat and the power socket of the present invention.

[0013] Among them, the accompanying drawings in the present invention are: 1, reducer body; 11, drive shaft; 2, motor; 3, fixed cover; 41, detection seat; 42, detection chamber; 43, switch; 44, spring 1; 45, resistance frame; 46, recovery groove; 47, slide ring; 51, resistance ring; 52, sleeve groove; 53, spring 2; 7, bearing seat; 71, inner ring; 72, ball; 73, outer ring; 74, round hole; 81, oil inlet hole; 82, oil filling pipe; 83, oil cap; 84, one-way valve; 85, piston rod; 86, connecting rod; 87, electric telescopic rod; 88, holder; 91, bracket; 92, plug-in plate; 93, plug socket; 94, alarm; 101, oil outlet; 102, collection box. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] like Figures 1 to 4 as well as Figure 7 As shown, a reducer with bearing wear warning includes a reducer body 1, a drive shaft 11 and a motor 2, the drive shaft 11 is rotatably connected to the reducer body 1, the motor 2 is fixedly connected to the reducer body 1, and the output shaft of the motor 2 can drive the drive shaft 11 to rotate through the transmission of the reducer body 1, the end of the reducer body 1 close to the drive shaft 11 is an axial diameter end, a bearing cavity is provided in the axial diameter end, a sealing component is connected to the side wall of the axial diameter end of the reducer body 1 facing the drive shaft 11, and an alarm 94 is provided on the reducer body 1, and the alarm 94 can emit a warning sound; The sealing assembly includes a contact ring 51 sleeved on the outside of the drive shaft 11, and one side wall of the contact ring 51 is arranged opposite to the bearing cavity opened in the shaft diameter end. The sealing assembly also includes a fixed cover 3 arranged on the outside of the contact ring 51, and the fixed cover 3 is detachably connected to the shaft diameter end by bolts. A slide ring 47 is fixedly connected to the side of the fixed cover 3 close to the contact ring 51, and a sleeve groove 52 is opened on the outer side wall of the contact ring 51 facing the fixed cover 3. The slide ring 47 extends into the sleeve groove 52, and a spring 53 is fixedly connected between the sleeve groove 52 and the slide ring 47. The spring 53 is used to buffer the vibration of the drive shaft 11; one side of the fixed cover 3 away from the reducer body 1 An annular plate is also fixed to the side outer wall, which is concentric with the resistance ring 51. A plurality of detection seats 41 are fixedly connected to the outer circumference of the annular plate at equal intervals. A detection cavity 42 is opened in the detection seat 41. Recovery grooves 46 are connected to the positions of the annular plate corresponding to the detection cavity 42. A switch 43 is fixedly connected to the inner wall of the detection cavity 42 away from the annular plate. A resistance frame 45 is slidably connected to the inside of the detection cavity 42. A spring 44 is sleeved on one end of the resistance frame 45 located inside the detection cavity 42. Both ends of the spring 44 are fixedly connected to the resistance frame 45 and the detection cavity 42 respectively. The resistance frame 45 extends out of the adjacent recovery groove 46 and resists the resistance ring 51. Multiple switches 43 are electrically connected to the alarm 94 through an external controller. When a switch 43 is pressed by the contact frame 45, the alarm 94 can be turned on and a warning sound can be emitted through the external controller. When all switches 43 are not pressed by the contact frame 45, the alarm 94 is turned off through the external controller. The working principle is the existing technology and will not be repeated here.

[0016] like Figures 4 to 7 As shown, a bearing assembly is arranged inside the bearing cavity of the reducer body 1, and the bearing assembly includes a bearing seat 7 fixedly connected to the inside of the bearing cavity, an inner ring 71 is sleeved on the outer surface of the drive shaft 11 and located on the inner side of the bearing cavity, the inner ring 71 is interference fit with the drive shaft 11, and a plurality of symmetrical balls 72 are arranged on the outer surface of the inner ring 71, an outer ring 73 is arranged on the outer side of the inner ring 71, the outer ring 73 is assembled on the inner side of the bearing seat 7, the outer ring 73 is in conflict with the bearing seat 7, the outer ring 73 is limitedly rollingly connected with the balls 72, and two circular holes 74 are symmetrically provided on the outer ring 73, the circular hole 74 at the top is used for lubricating oil to enter the outer ring 73, and the circular hole 74 at the bottom is used for discharging waste lubricating oil.

[0017] like Figures 6 to 9As shown, the reducer body 1 is provided with an oil filling assembly for injecting lubricating oil, and the oil filling assembly includes an oil inlet hole 81 opened on the top of the reducer body 1, and the oil inlet hole 81 extends to the upper end of the bearing seat 7, and the oil inlet hole 81 corresponds to the position of the circular hole 74 on the top. The top of the reducer body 1 is detachably connected with an oil filling pipe 82 by bolts, and the oil filling pipe 82 is composed of a long horizontal pipe and a short vertical pipe. The short vertical pipe of the oil filling pipe 82 is connected with the oil inlet hole 81, and an oil cap 83 is threadedly connected to one end of the long horizontal pipe of the oil filling pipe 82 close to the oil inlet hole 81. After unscrewing the oil cap 83, lubricating oil can be injected into the oil filling pipe 82, and a one-way valve 84 is arranged inside the short vertical pipe of the oil filling pipe 82. The one-way valve 84 is configured to discharge lubricating oil only to the oil inlet hole 81. A holder 88 is fixedly connected to the main body 1 by bolts, and one end of the long horizontal tube of the oil filling tube 82 away from the oil cover 83 is clamped with the holder 88. The holder 88 is used to stabilize the oil filling tube 82. An electric telescopic rod 87 is fixedly connected to the oil filling tube 82, and a connecting rod 86 is fixedly connected to the telescopic axis of the electric telescopic rod 87. A piston rod 85 is fixedly connected to the connecting rod 86. The piston rod 85 is located below the electric telescopic rod 87 and is parallel to the electric telescopic rod 87, and one end of the piston rod 85 away from the connecting rod 86 slides in the long horizontal tube of the oil filling tube 82. The electric telescopic rod 87 is electrically connected to an external controller. When a switch 43 is pressed by the abutment frame 45, the electric telescopic rod 87 can be retracted by the external controller. Its working principle is the existing technology and will not be repeated here.

[0018] like Figure 8 and Fig. 9 As shown, two symmetrically arranged brackets 91 are fixedly connected to the two side surfaces of the connecting rod 86, and a plug-in sheet 92 is fixedly connected to the side of the bracket 91 close to the piston rod 85. A symmetrical plug socket 93 is fixedly connected to the side wall of the reducer body 1 facing the plug-in sheet 92. The plug socket 93 is provided with a socket corresponding to the plug-in sheet 92. The plug socket 93 is electrically connected to an external controller. When the plug-in sheet 92 is inserted into the plug socket 93, the alarm 94 is activated and continuously emits a warning sound through the external controller, and when the plug-in sheet 92 is inserted into the plug socket 93, the electric telescopic rod 87 is closed through the external controller. Its working principle is the existing technology and will not be repeated here.

[0019] like Figure 1 and Figure 6 As shown, a collecting assembly for collecting waste lubricating oil is provided at the bottom of the reducer body 1, and the collecting assembly includes an oil outlet hole 101 opened on the reducer body 1, and the oil outlet hole 101 extends to the lower end of the bearing seat 7, and the oil outlet hole 101 corresponds to the position of the circular hole 74 at the bottom. The bottom of the reducer body 1 is detachably connected with a collecting box 102 by bolts, and the collecting box 102 is connected to the oil outlet hole 101.

[0020] In combination with the above preferred embodiments, the following is the entire working process and working principle of the above embodiments: The working status is: The oil filling pipe 82 is not initially connected to the reducer body 1 by bolts. The staff manually rotates the oil cap 83 counterclockwise. At this time, the oil cap 83 is released from the threaded connection with the oil filling pipe 82. The staff then inserts the end of the long horizontal tube of the oil filling pipe 82 close to the short vertical tube into the lubricating oil. At this time, the staff can turn on the electric telescopic rod 87 to extend the telescopic shaft of the electric telescopic rod 87. The telescopic shaft of the electric telescopic rod 87 pushes the piston rod 85, so that the piston rod 85 moves in the long horizontal tube of the oil filling pipe 82 toward the end of the short vertical tube away from the oil filling pipe 82. At this time, the lubricating oil will be sucked into the oil filling pipe 82. At this time, the staff again threadably connects the oil cap 83 to the oil filling pipe 82 in a clockwise direction. The staff then clamps the long horizontal tube of the oil filling pipe 82 into the clamping seat 88 to facilitate the bolt installation of the oil filling pipe 82. Finally, the staff aligns the short vertical tube of the oil filling pipe 82 with the oil inlet hole 81, and fixes the short vertical tube of the oil filling pipe 82 to the reducer body 1 by bolts.

[0021] Detect the drive shaft 11: After starting the motor 2, the motor 2 will drive the drive shaft 11 to reduce the speed through the reducer body 1. At this time, the rotation of the drive shaft 11 will drive the inner ring 71 to rotate, and the inner ring 71 drives the ball 72 to roll in the outer ring 73, which can reduce friction and make the drive shaft 11 rotate more smoothly. In addition, the ball 72 needs lubricating oil for lubrication. When the lubricating oil between the inner ring 71 and the outer ring 73 is insufficient or there are worn debris in the lubricating oil, the rolling of the ball 72 between the inner ring 71 and the outer ring 73 will be stuck, making the drive shaft 11 unable to rotate. The drive shaft 11 rotates smoothly. During the rotation process, the drive shaft 11 will be stuck synchronously with the bearing assembly, causing the drive shaft 11 to vibrate during continuous rotation. The vibration of the drive shaft 11 will be transmitted to the abutment ring 51 sleeved thereon, causing the abutment ring 51 to vibrate synchronously. When the abutment ring 51 vibrates, the spring 2 53 between the sleeve groove 52 and the slide groove ring 47 will be deformed. During the deformation process of the spring 2 53, the vibration of the abutment ring 51 can be buffered, preventing the drive shaft 11 from vibrating excessively and causing damage to the reducer body 1. If the driving shaft 11 continues to vibrate, the vibration of the driving shaft 11 causes the contact ring 51 to shake relative to the slide groove ring 47. The shaking of the contact ring 51 will also continuously push the contact frame 45 that is in contact with it, so that the contact frame 45 is pushed to move into the detection cavity 42, while stretching the spring 44 and pressing the corresponding switch 43, thereby performing a preliminary trigger detection on the shaking of the driving shaft 11.

[0022] Oil filling assembly: Fill the bearing assembly with oil: When the switch 43 is abutted by the abutment frame 45, the external controller will control the electric telescopic rod 87 to retract and the alarm 94 will give a preliminary warning. The contraction of the telescopic shaft of the electric telescopic rod 87 will drive the piston rod 85 to move in the horizontal long tube of the oil filling pipe 82 toward the end close to the oil cover 83 through the connecting rod 86. During the movement of the piston rod 85, the lubricating oil in the oil filling pipe 82 will be squeezed. At this time, the one-way valve 84 opens, and the lubricating oil will enter the inside of the oil inlet hole 81. The lubricating oil then enters between the outer ring 73 and the inner ring 71 through the circular hole 74, and then can lubricate the ball 72 between the outer ring 73 and the inner ring 71, thereby preventing wear and jamming caused by too little lubricating oil in the bearing assembly, reducing the jamming of the bearing assembly, and enabling the bearing assembly to run smoothly and reduce the deviation in the matching with the drive shaft 11. After the bearing assembly is injected with lubricating oil, if the ball 72 in the bearing assembly no longer gets stuck when rolling, the rotation of the drive shaft 11 will tend to be stable and the drive shaft 11 will no longer shake. At this time, the switch 43 is not abutted by the abutment frame 45, and the device does not detect the shaking of the drive shaft 11. The oil injection assembly will no longer inject oil into the bearing assembly, and the alarm 94 will also stop warning.

[0023] Continuous oil filling of the oil filling assembly: When the bearing assembly is being oiled, if the drive shaft 11 is always shaking, the abutment ring 51 will continuously push the abutment frame 45, and the abutment frame 45 will also intermittently abut the switch 43, so that the switch 43 intermittently controls the electric telescopic rod 87. When the abutment frame 45 abuts the switch 43, the electric telescopic rod 87 will be controlled to retract. When the abutment frame 45 does not abut the switch 43, the electric telescopic rod 87 remains stationary, thereby intermittently causing the electric telescopic rod 87 to continuously retract. During the retraction of the electric telescopic rod 87, the piston rod 85 will be driven by the connecting rod 86 to squeeze the lubricating oil in the oil filling pipe 82, so that the lubricating oil in the oil filling pipe 82 continuously flows into the bearing assembly. When new lubricating oil is continuously injected into the bearing assembly, the new lubricating oil will cause the old lubricating oil in the bearing assembly to be discharged from the circular hole 74 at the bottom. By discharging the old lubricating oil, the worn debris inside the bearing assembly can be discharged synchronously, so as to avoid the lubricating oil mixed with the debris from causing wear to the bearing assembly. Similar to the above, after the lubricating oil is injected into the bearing assembly, the lubricating oil mixed with debris is completely discharged. If the rolling of the ball 72 no longer gets stuck, the rotation of the drive shaft 11 will tend to be stable. If the shaking of the drive shaft 11 is not detected at this time, the oil injection assembly will no longer inject oil into the bearing assembly.

[0024] Collection components for old lubricating oil collection: The old lubricating oil discharged from the circular hole 74 at the bottom will enter the oil outlet hole 101 , and the old lubricating oil will enter the collection box 102 through the oil outlet hole 101 , and the old lubricating oil can be collected by the collection box 102 .

[0025] Siren 94 continues to warn: After the lubricating oil in the oil filling pipe 82 is completely filled, if the rotation of the drive shaft 11 still shakes, causing the switch 43 to be resisted by the resistance frame 45, the telescopic shaft of the electric telescopic rod 87 continues to shrink, and the telescopic shaft of the electric telescopic rod 87 will drive the bracket 91 to approach the socket 93 through the connecting rod 86. At this time, the plug-in piece 92 on the bracket 91 will be inserted into the socket on the socket 93, and the electric telescopic rod 87 will stop running through the external controller, and the alarm 94 will start and continue to emit a warning sound, so as to remind the staff through the warning sound, so that the staff can carry out maintenance in time to avoid loosening of the internal parts of the reducer body 1.

[0026] Quick disassembly of bearing assembly: When the alarm 94 continues to emit warning sounds, it can be determined that the bearing assembly is worn and cannot stably support the drive shaft 11 normally. At this time, the staff can use tools to remove the bolts on the fixed cover 3 one by one, and remove the fixed cover 3 from the axial diameter end of the reducer body 1. At this time, the staff can remove the bearing assembly from the drive shaft 11.

[0027] 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 reducer with bearing wear warning function, comprising a reducer body (1), a drive shaft (11) and a motor (2), wherein the drive shaft (11) is rotatably connected to the reducer body (1), and the motor (2) is fixedly connected to the reducer body (1), characterized in that: One end of the reducer body (1) close to the drive shaft (11) is an axial diameter end, a bearing cavity is provided in the axial diameter end, a sealing component is provided on the axial diameter end of the reducer body (1), and an alarm (94) is provided on the reducer body (1); The sealing assembly comprises a contact ring (51) sleeved on the outside of the drive shaft (11), a fixed cover (3) is arranged on the outside of the contact ring (51), the fixed cover (3) is detachably connected to the shaft diameter end by bolts, a slide ring (47) is fixedly connected to the fixed cover (3), a sleeve groove (52) is opened on the outer wall of the contact ring (51), the slide ring (47) extends into the sleeve groove (52), a spring (53) is connected between the sleeve groove (52) and the slide ring (47), an annular plate is fixedly connected to the fixed cover (3), and the outer circumference of the annular plate is A plurality of detection seats (41) are fixedly connected at equal intervals around the periphery, a detection cavity (42) is provided in the detection seat (41), recovery grooves (46) are provided at positions corresponding to the detection cavities (42) on the annular plate, a switch (43) is fixedly connected to the inner wall of the detection cavity (42), a resistance frame (45) is slidably connected in the detection cavity (42), a spring (44) is provided between the resistance frame (45) and the detection cavity (42), and the resistance frame (45) extends out of the adjacent recovery groove (46) and resists the resistance ring (51).

2. A reducer with bearing wear warning according to claim 1, characterized in that: A bearing assembly is arranged inside the bearing cavity of the reducer body (1), and the bearing assembly comprises a bearing seat (7) fixedly connected to the inside of the bearing cavity; an inner ring (71) is sleeved on the outer surface of the drive shaft (11); a plurality of symmetrical balls (72) are arranged on the outer surface of the inner ring (71); an outer ring (73) is arranged outside the inner ring (71); the outer ring (73) is rollingly connected to the balls (72); the outer ring (73) is arranged inside the bearing seat (7); and a circular hole (74) is provided on both the upper and lower sides of the outer ring (73).

3. A reducer with bearing wear warning according to claim 2, characterized in that: The reducer body (1) is provided with an oil injection assembly, which includes an oil inlet hole (81) opened at the top of the reducer body (1), the oil inlet hole (81) extending to the upper end of the bearing seat (7), the oil inlet hole (81) corresponding to the position of the circular hole (74) at the top, an oil injection pipe (82) detachably connected to the top of the reducer body (1) by bolts, the oil injection pipe (82) corresponding to the position of the oil inlet hole (81), an end of the oil injection pipe (82) close to the oil inlet hole (81) is threadedly connected to an oil cap (83), and the oil injection pipe (82) is connected to the oil cap (83) by threading. A one-way valve (84) is provided inside the oil pipe (82); a holder (88) is fixedly connected to the reducer body (1) by means of bolts; one end of the oil filling pipe (82) away from the oil cover (83) is clamped to the holder (88); an electric telescopic rod (87) is fixedly connected to the oil filling pipe (82); a connecting rod (86) is fixedly connected to the telescopic shaft of the electric telescopic rod (87); a piston rod (85) is fixedly connected to the connecting rod (86); and one end of the piston rod (85) away from the connecting rod (86) slides in the oil filling pipe (82).

4. A reducer with bearing wear warning according to claim 3, characterized in that: Two symmetrically arranged brackets (91) are fixedly connected to the connecting rod (86), a plug sheet (92) is fixedly connected to the bracket (91), a symmetrical plug socket (93) is fixedly connected to the side wall of the reducer body (1) facing the plug sheet (92), and a plug socket (93) is provided with a socket corresponding to the plug sheet (92).

5. A reducer with bearing wear warning according to claim 3, characterized in that: A collecting assembly for collecting waste lubricating oil is provided at the bottom of the reducer body (1), the collecting assembly comprising an oil outlet hole (101) provided on the reducer body (1), the oil outlet hole (101) extending to the lower end of the bearing seat (7), the oil outlet hole (101) corresponding to the position of the circular hole (74) at the bottom, and a collecting box (102) detachably connected to the bottom of the reducer body (1) via bolts, the collecting box (102) being in communication with the oil outlet hole (101).

6. A reducer with bearing wear warning according to claim 3, characterized in that: The oil filling pipe (82) is composed of a long horizontal pipe and a short vertical pipe. The short vertical pipe of the oil filling pipe (82) is connected to the oil inlet hole (81). The short vertical pipe of the oil filling pipe (82) is bolted to the top of the reducer body (1). A one-way valve (84) is arranged in the short vertical pipe of the oil filling pipe (82). An end of the long horizontal pipe of the oil filling pipe (82) close to the oil inlet hole (81) is threadedly connected to an oil cap (83). An electric telescopic rod (87) is fixedly arranged on the long horizontal pipe of the oil filling pipe (82). The piston rod (85) is slidably arranged in the long horizontal pipe of the oil filling pipe (82). The long horizontal pipe of the oil filling pipe (82) is clamped to a clamping seat (88).

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