Integrated driving motor for excavator

Abstract

The invention relates to the technical field of excavator motors, in particular to an integrated driving motor for an excavator, which comprises a first oil seal, a rear insulating steel sleeve, an epoxy gasket, a front insulating steel sleeve, a second oil seal, a double-output shaft, an oil seal mounting bracket, a motor rear end cover, a motor front end cover and a controller, the oil seal installation support is installed on the motor rear end cover, the first oil seal is installed on the oil seal installation support, the end, away from the flange, of the double-output shaft is sleeved with the second oil seal, and the second oil seal is installed on the motor front end cover. Through the design of the double output shafts, coaxial arrangement of the oil pump and the cooling fan can be achieved, and space saving is achieved; the compressor and the generator can be distributed on the two sides of the motor through the dual-purpose belt wheel with the double output shafts, and integration is achieved; the front insulating steel sleeve, the rear insulating steel sleeve and the epoxy gasket of the motor can restrain the motor from generating shaft current, so that the double output shafts are protected, and the service life of the driving motor can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of excavator motors, and in particular to an integrated drive motor for an excavator. Background Art

[0002] At present, the commonly used power layout form on domestic electric excavators is that the excavator hydraulic system is driven by a separate motor, the compressor and generator are driven by a separate motor, and the excavator power system cooling fan is driven by a separate motor. Due to the large number of motors, the various components need to be arranged separately, which requires a large amount of installation space and is not conducive to the realization of integrated drive design.

[0003] At the same time, the oil pump motor currently used in this type of excavator has a rapid change in speed and torque, so the shaft current is generated by harmonics, which is more likely to corrode the bearings and have a great impact on the service life of the motor.

[0004] To this end, we propose an integrated drive motor for an excavator. Summary of the invention

[0005] The main purpose of the present invention is to provide an integrated drive motor for an excavator. The double-output shaft design can realize the coaxial arrangement of the oil pump and the cooling fan, thereby saving space; the dual-purpose pulley of the double-output shaft can realize the distribution of the compressor and the generator on both sides of the motor, thereby realizing integration; the front insulating steel sleeve, the rear insulating steel sleeve, and the epoxy gasket of the motor can suppress the shaft current generated by the motor, thereby protecting the double-output shaft, and further extending the service life of the drive motor. When a wider belt is required, an installation component is assembled in the groove on the side of the first pulley close to the flange. Through the design of the installation component, the second pulley can be assembled on one side of the first pulley. Through the use of the second pulley, the practicability of the drive motor can be further improved, and the problems in the background technology can be effectively solved.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] An integrated drive motor for an excavator, comprising a first oil seal, a rear insulating steel sleeve, an epoxy gasket, a front insulating steel sleeve, a second oil seal, a double-output shaft, an oil seal mounting bracket, a motor rear end cover, a motor front end cover and a controller, a flange and a first pulley are mounted on one end of the double-output shaft, a first through hole matching the double-output shaft is provided on the first pulley, the first pulley is sleeved on the double-output shaft, the flange is fixedly connected to one end of the double-output shaft by a first bolt, an oil seal mounting bracket is also sleeved on one end of the double-output shaft close to the flange and the first pulley, the oil seal mounting bracket is mounted on the motor rear end cover, the first oil seal is mounted on the oil seal mounting bracket, a second oil seal is sleeved on one end of the double-output shaft away from the flange, and the second oil seal is mounted on the motor front end cover;

[0008] The end of the double-exit shaft close to the second oil seal is also sleeved with an epoxy gasket and a front insulating steel sleeve, one end of the front cover of the motor is installed with a controller, one end of the controller is provided with a label, and the rear cover of the motor is threadedly connected with a second bolt;

[0009] A groove is provided at the center of the first pulley near the flange, and a mounting assembly for assembling the second pulley is mounted on the first pulley near the groove through a fourth bolt;

[0010] The installation assembly includes a first fastener, a second fastener, a third bolt, an arc-shaped member and an insert block.

[0011] By adopting the above technical scheme, the double-output shaft design can realize the coaxial arrangement of the oil pump and the cooling fan, thereby saving space; the dual-purpose pulley of the double-output shaft can realize the distribution of the compressor and the generator on both sides of the motor, thereby realizing integration; the front insulating steel sleeve, the rear insulating steel sleeve, and the epoxy gasket of the motor can suppress the shaft current generated by the motor, thereby protecting the double-output shaft, and further extending the service life of the drive motor.

[0012] Specifically, one end of the double-outlet shaft close to the front insulating steel sleeve and the front end cover of the motor is a spline end, and one end of the double-outlet shaft close to the rear insulating steel sleeve and the rear end cover of the motor is an optical axis end.

[0013] Specifically, the double-output shaft is provided with an assembly groove matched with the key at the optical axis end.

[0014] Specifically, the first fastener and the second fastener are both arc-shaped structures, and the first fastener and the second fastener together form a circular ring structure, and one side of the first fastener and the second fastener is fixedly connected with an arc-shaped member.

[0015] Specifically, the arc-shaped members are arranged in two groups relatively to each other, and both groups of the arc-shaped members are located in the grooves. The arc-shaped members are fixedly connected to the first pulley via fourth bolts, and threaded grooves are arranged on the outer sides of the first fastener and the second fastener.

[0016] Specifically, both ends of the first fastener and the second fastener are provided with slots for the insert block, and the two ends of the first fastener are connected to the two ends of the second fastener through the insert block.

[0017] By adopting the above technical solution, when a wider belt is needed, the installation component is assembled in the groove on the side of the first pulley close to the flange, and then the second pulley with the installation groove is threadedly connected to the first fastener and the second fastener, one end of the third bolt is passed through the installation hole and threadedly connected to the first fastener and the second fastener, and then the sealing cover is fastened on the installation hole to complete the installation, and finally the wider belt is put on the second pulley. Through the design of the installation component, the second pulley can be assembled on one side of the first pulley. Through the use of the second pulley, the practicality of the drive motor can be further improved.

[0018] Specifically, the second belt pulley is arranged relatively parallel to the first belt pulley, a mounting groove matched with the thread groove is provided on a side of the second belt pulley close to the first belt pulley, and a second through hole is provided on one side of the second belt pulley.

[0019] Specifically, a mounting hole for installing a third bolt is provided on the side of the second pulley away from the first pulley, one end of the third bolt passes through the mounting hole and is threadedly connected to the first fastener and the second fastener, and a sealing cover is fastened at the location of the mounting hole of the second pulley.

[0020] Beneficial effects of the present invention:

[0021] (1) The integrated drive motor for an excavator described in the present invention has a double-output shaft design that can realize the coaxial arrangement of the oil pump and the cooling fan, thereby saving space; the dual-purpose pulley of the double-output shaft can realize the distribution of the compressor and the generator on both sides of the motor, thereby realizing integration; the front insulating steel sleeve, the rear insulating steel sleeve, and the epoxy gasket of the motor can suppress the shaft current generated by the motor, thereby protecting the double-output shaft, and further extending the service life of the drive motor;

[0022] (2) When a wider belt is needed for the integrated drive motor for an excavator described in the present invention, the installation assembly is assembled in the groove on the side of the first pulley close to the flange, and then the second pulley provided with the installation groove is threadedly connected to the first fastener and the second fastener, one end of the third bolt is passed through the installation hole and threadedly connected to the first fastener and the second fastener, and then the sealing cover is fastened on the installation hole to complete the installation, and finally the wider belt is put on the second pulley. Through the design of the installation assembly, the second pulley can be assembled on one side of the first pulley. Through the use of the second pulley, the practicality of the drive motor can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the controller structure of the present invention;

[0026] Figure 3 is a schematic diagram of the second pulley structure of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 It is a schematic diagram of the structure of the installation assembly of the present invention;

[0029] Figure 6A three-dimensional diagram of the installation assembly of the present invention;

[0030] Figure 7 A three-dimensional diagram of the plug block of the present invention;

[0031] In the figure: 1. first bolt; 2. key; 3. flange; 4. first pulley; 5. first oil seal; 6. rear insulating steel sleeve; 7. epoxy gasket; 8. front insulating steel sleeve; 9. second oil seal; 10. double shaft; 11. oil seal mounting bracket; 12. rear end cover of motor; 13. front end cover of motor; 14. controller; 15. label; 16. second bolt; 17. groove; 18. first through hole; 19. mounting assembly; 20. first fastener; 21. second fastener; 22. second pulley; 23. mounting groove; 24. third bolt; 25. mounting hole; 26. sealing cover; 27. second through hole; 28. arc-shaped member; 29. ​​slot; 30. plug-in block; 31. fourth bolt; 32. threaded groove. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] As an embodiment of the present invention, Figure 1-Figure 7 As shown, an integrated drive motor for an excavator described in the present invention comprises a first oil seal 5, a rear insulating steel sleeve 6, an epoxy gasket 7, a front insulating steel sleeve 8, a second oil seal 9, a double-output shaft 10, an oil seal mounting bracket 11, a motor rear end cover 12, a motor front end cover 13 and a controller 14, one end of the double-output shaft 10 is mounted with a flange 3 and a first pulley 4, the first pulley 4 is provided with a first through hole 18 adapted to the double-output shaft 10, the first pulley 4 is sleeved on the double-output shaft 10, the flange 3 is fixedly connected to one end of the double-output shaft 10 by a first bolt 1, the double-output shaft 10 is also sleeved with an oil seal mounting bracket 11 at one end close to the flange 3 and the first pulley 4, the oil seal mounting bracket 11 is mounted on the motor rear end cover 12, the first oil seal 5 is mounted on the oil seal mounting bracket 11, the end of the double-output shaft 10 away from the flange 3 is sleeved with a second oil seal 9, and the second oil seal 9 is mounted on the motor front end cover 13;

[0034] The end of the double-outlet shaft 10 near the second oil seal 9 is also sleeved with an epoxy gasket 7 and a front insulating steel sleeve 8, a controller 14 is installed at one end of the motor front end cover 13, a label 15 is provided at one end of the controller 14, and a second bolt 16 is threadedly connected to the motor rear end cover 12;

[0035] A groove 17 is provided at the center of the first pulley 4 near the flange 3, and a mounting assembly 19 for mounting the second pulley 22 is mounted on the first pulley 4 near the groove 17 through a fourth bolt 31;

[0036] The mounting assembly 19 includes a first fastener 20 , a second fastener 21 , a third bolt 24 , an arc-shaped member 28 and an insert block 30 .

[0037] When in use, the first pulley 4 is connected to the compressor and the generator of the excavator through the PK wheel groove and the single A groove respectively, so that the compressor and the generator can be distributed on both sides of the drive motor; the drive motor is connected to the hydraulic oil pump of the excavator through the spline end of the double-output shaft 10, and is connected to the cooling fan of the excavator through the flange 3. When the structure is arranged, the coaxial arrangement of the excavator oil pump, the drive motor and the cooling fan can be realized to achieve the purpose of integration. For the drive motor, the first oil seal 5 and the second oil seal 9 can realize the sealing of the motor; at the same time, when the drive motor is running, the front insulating steel sleeve 8 and the epoxy gasket 7 can realize the insulation between the front end of the double-output shaft and the front end cover 13 of the motor, and no motor loop current is generated. The rear insulating steel sleeve 6 can realize the insulation between the rear end cover 12 of the motor and the rear end of the double-output shaft, and no motor loop current is generated to affect the use of the motor.

[0038] The present invention also includes that the end of the double-outlet shaft 10 close to the front insulating steel sleeve 8 and the motor front end cover 13 is a spline end, and the end of the double-outlet shaft 10 close to the rear insulating steel sleeve 6 and the motor rear end cover 12 is a smooth axis end.

[0039] The present invention also includes that the double-output shaft 10 is provided with a mounting groove matched with the key 2 at the optical axis end.

[0040] The present invention also includes that the first fastener 20 and the second fastener 21 are both arc-shaped structures, the first fastener 20 and the second fastener 21 together form a circular ring structure, and the first fastener 20 and the second fastener 21 are both fixedly connected to one side with an arc-shaped member 28.

[0041] The present invention also includes that the arc-shaped members 28 are provided in two groups opposite to each other, and the two groups of arc-shaped members 28 are both located in the groove 17, and the arc-shaped members 28 are fixedly connected to the first pulley 4 by a fourth bolt 31, and the first fastener 20 and the second fastener 21 are both provided with a thread groove 32 on the outer side;

[0042] When a wider belt is needed, the installation assembly 19 is assembled in the groove 17 on the side of the first pulley 4 close to the flange 3, the two ends of the first fastener 20 are connected to the two ends of the second fastener 21 through the plug block 30, and then the two sets of arc-shaped members 28 are inserted into the groove 17, and one end of the fourth bolt 31 is passed through the arc-shaped member 28 and fixedly connected to the first pulley 4. The first fastener 20 and the second fastener 21 are both provided with a threaded groove 32 on the outside, and then the second pulley 22 provided with the installation groove 23 is threadedly connected to the first fastener 20 and the second fastener 21, and one end of the third bolt 24 is passed through the installation hole 25 and is threadedly connected to the first fastener 20 and the second fastener 21, and then the sealing cover 26 is buckled on the installation hole 25 to complete the installation.

[0043] The present invention also includes that both ends of the first fastener 20 and the second fastener 21 are provided with slots 29 for connecting with the insert block 30 , and the two ends of the first fastener 20 are connected with the two ends of the second fastener 21 through the insert block 30 .

[0044] The present invention also includes that the second pulley 22 is arranged relatively parallel to the first pulley 4, the second pulley 22 is provided with a mounting groove 23 matched with the thread groove 32 on one side close to the first pulley 4, and the second pulley 22 is provided with a second through hole 27 on one side.

[0045] The present invention also includes that a mounting hole 25 for installing a third bolt 24 is provided on the side of the second pulley 22 away from the first pulley 4, one end of the third bolt 24 passes through the mounting hole 25 and is threadedly connected to the first fastener 20 and the second fastener 21, and a sealing cover 26 is fastened at the position of the mounting hole 25 of the second pulley 22.

[0046] The integrated drive motor for the excavator, when in use, the first pulley 4 is connected to the compressor and the generator of the excavator through the PK wheel groove and the single A groove respectively, so that the compressor and the generator can be distributed on both sides of the drive motor; the drive motor is connected to the hydraulic oil pump of the excavator through the spline end of the double-output shaft 10, and is connected to the cooling fan of the excavator through the flange 3. When the structure is arranged, the coaxial arrangement of the excavator oil pump, the drive motor and the cooling fan can be realized to achieve the purpose of integration. For the drive motor, the first oil seal 5 and the second oil seal 9 can realize the sealing of the motor;

[0047] At the same time, when the drive motor is running, the front insulating steel sleeve 8 and the epoxy gasket 7 can achieve insulation between the front end of the double-output shaft and the front end cover 13 of the motor, and no motor loop current is generated. The rear insulating steel sleeve 6 can achieve insulation between the rear end cover 12 of the motor and the rear end of the double-output shaft, and no motor loop current is generated to affect the use of the motor.

[0048] When a wider belt is needed, the mounting assembly 19 is assembled in the groove 17 on the side of the first pulley 4 close to the flange 3, the two ends of the first fastener 20 are connected to the two ends of the second fastener 21 through the plug block 30, and then the two sets of arc-shaped members 28 are inserted into the groove 17, and one end of the fourth bolt 31 is passed through the arc-shaped member 28 and fixedly connected to the first pulley 4, and the first fastener 20 and the second fastener 21 are both provided with a threaded groove 32 on the outside, and then the second pulley 22 provided with the mounting groove 23 is threadedly connected to the first fastener 20 and the second fastener 21, and one end of the third bolt 24 is passed through the mounting hole 25 and is threadedly connected to the first fastener 20 and the second fastener 21, and then the sealing cover 26 is buckled on the mounting hole 25 to complete the installation, and finally a wider belt is put on the second pulley 22.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An integrated drive motor for an excavator, characterized in that: The motor comprises a first oil seal (5), a rear insulating steel sleeve (6), an epoxy gasket (7), a front insulating steel sleeve (8), a second oil seal (9), a double-output shaft (10), an oil seal mounting bracket (11), a motor rear end cover (12), a motor front end cover (13) and a controller (14); a flange (3) and a first pulley (4) are mounted on one end of the double-output shaft (10); a first through hole (18) adapted to the double-output shaft (10) is provided on the first pulley (4); the first pulley (4) is sleeved on the double-output shaft (10); The flange (3) is fixedly connected to one end of the double-outlet shaft (10) by a first bolt (1); an end of the double-outlet shaft (10) close to the flange (3) and the first pulley (4) is also sleeved with an oil seal mounting bracket (11); the oil seal mounting bracket (11) is mounted on the rear end cover (12) of the motor; the first oil seal (5) is mounted on the oil seal mounting bracket (11); an end of the double-outlet shaft (10) away from the flange (3) is sleeved with a second oil seal (9); the second oil seal (9) is mounted on the front end cover (13) of the motor; An epoxy gasket (7) and a front insulating steel sleeve (8) are also sleeved on one end of the double-output shaft (10) close to the second oil seal (9); a controller (14) is installed on one end of the front cover (13) of the motor; a label (15) is provided on one end of the controller (14); and a second bolt (16) is threadedly connected to the rear cover (12) of the motor; A groove (17) is provided at the center of the first pulley (4) near the flange (3), and a mounting assembly (19) for mounting the second pulley (22) is mounted on the first pulley (4) near the groove (17) via a fourth bolt (31); The installation assembly (19) comprises a first fastener (20), a second fastener (21), a third bolt (24), an arc-shaped member (28) and an insert block (30).

2. The integrated drive motor for an excavator according to claim 1, characterized in that: One end of the double-outlet shaft (10) close to the front insulating steel sleeve (8) and the front end cover (13) of the motor is a spline end, and one end of the double-outlet shaft (10) close to the rear insulating steel sleeve (6) and the rear end cover (12) of the motor is an optical axis end.

3. The integrated drive motor for an excavator according to claim 2, characterized in that: The double-outlet shaft (10) is provided with an assembly groove matched with the key (2) at the optical axis end.

4. The integrated drive motor for an excavator according to claim 1, characterized in that: The first fastener (20) and the second fastener (21) are both arc-shaped structures. The first fastener (20) and the second fastener (21) together form a circular ring structure. One side of the first fastener (20) and the second fastener (21) is fixedly connected to an arc-shaped part (28).

5. The integrated drive motor for excavator according to claim 4, characterized in that: The arc-shaped members (28) are arranged in two groups opposite to each other. Both groups of the arc-shaped members (28) are located in the groove (17). The arc-shaped members (28) are fixedly connected to the first pulley (4) via a fourth bolt (31). The first fastener (20) and the second fastener (21) are both provided with a threaded groove (32) on their outer sides.

6. The integrated drive motor for an excavator according to claim 5, characterized in that: Both ends of the first fastener (20) and the second fastener (21) are provided with slots (29) for connecting with the insert block (30), and the two ends of the first fastener (20) are connected with the two ends of the second fastener (21) via the insert block (30).

7. The integrated drive motor for an excavator according to claim 1, characterized in that: The second belt pulley (22) is arranged parallel to the first belt pulley (4); a mounting groove (23) matching the thread groove (32) is provided on the side of the second belt pulley (22) close to the first belt pulley (4); and a second through hole (27) is provided on one side of the second belt pulley (22).

8. The integrated drive motor for an excavator according to claim 7, characterized in that: A mounting hole (25) for mounting a third bolt (24) is provided on a side of the second pulley (22) away from the first pulley (4); one end of the third bolt (24) passes through the mounting hole (25) and is threadedly connected to the first fastener (20) and the second fastener (21); and a sealing cover (26) is fastened to the second pulley (22) at the location of the mounting hole (25).

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