Permanent magnet synchronous drive and hydraulic integrated power system

Abstract

The application discloses a permanent magnet synchronous driving and hydraulic integrated integrated power system, which comprises an integrated shell, two motor cavities are arranged on one side of the integrated shell, and a permanent magnet synchronous motor is detachably installed in the motor cavities; a positioning groove is arranged on the inner side wall of the motor cavities; a fixing ring is arranged on the outside of the permanent magnet synchronous motor, a plurality of positioning blocks protruding from the surface of the fixing ring are elastically arranged on the fixing ring, one end of the positioning blocks close to the fixing ring is provided with a connecting rod, the other end of the connecting rod extends to the inner side of the fixing ring through the fixing ring, and the end of the connecting rod is sequentially provided with a connecting plate and elastic sound insulation cotton. The fixing ring and the plurality of positioning blocks are arranged, a multi-point support structure is adopted, vibration of the permanent magnet synchronous motor can be more evenly dispersed, local stress concentration can be reduced, and noise can be reduced; and the elastic sound insulation cotton is arranged, and under the action of assisting installation of the positioning blocks, the elastic sound insulation cotton can also play a role in absorbing vibration and reducing noise.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of permanent magnet motors, and particularly relates to a permanent magnet synchronous driving and hydraulic integrated integrated power system. BACKGROUND

[0002] In a new energy engineering machinery vehicle driving system, a driving motor and a control system are included as a power source. This part is more critical, and its performance directly affects the performance and economic performance of the whole vehicle. The driving and hydraulic integrated integrated power system refers to the integrated design of the traction motor, the operation motor and the electric drive control system, reduces the loss in energy conversion, and improves the efficiency of the whole vehicle.

[0003] The existing technology discloses a kind of integrated shell, electric drive system and vehicle in Chinese patent application file with announcement number CN218498915U, the integrated shell includes shell body, reducer shell, double motor end cover and controller end cover, the shell body is equipped with reducer installation cavity, controller installation cavity and double motor installation cavity, the shell body is integrally formed. The integrated shell of this application plays the role of simplifying assembly process, reducing cost.

[0004] The above-mentioned prior art directly installs the motor in the cavity, and the vibration generated by the motor during operation is directly transmitted to the cavity wall, resulting in structure sound transmission and increasing the overall noise of the system. SUMMARY

[0005] The present application is directed to the problems in the prior art, and proposes the following technical scheme:

[0006] The present application provides a permanent magnet synchronous driving and hydraulic integrated integrated power system, comprising:

[0007] An integrated shell, one side of the integrated shell is provided with two motor cavities, and a permanent magnet synchronous motor is detachably installed in the motor cavity.

[0008] A positioning groove is arranged on the inner side wall of the motor cavity.

[0009] A fixing ring is sleeved on the outside of the permanent magnet synchronous motor, a plurality of positioning blocks protruding from the surface of the fixing ring are elastically arranged on the fixing ring, one end of the positioning block close to the fixing ring is provided with a connecting rod, the other end of the connecting rod extends to the inner side of the fixing ring through the fixing ring, and the end of the connecting rod is further provided with a connecting plate and an elastic sound insulation cotton in sequence, the elastic sound insulation cotton is attached to the surface of the permanent magnet synchronous motor, and a spring is further sleeved on the outer portion of the connecting rod and between the connecting plate and the inner side wall of the fixing ring.

[0010] As the preferred technical scheme of the above, the integrated shell is provided with a front cover closing the open end of the motor cavity, the output shaft of the permanent magnet synchronous motor extends to the outside through the front cover, the inside of the motor cavity and away from the front cover is provided with a positioning cylinder, and the end of the permanent magnet synchronous motor away from the output shaft is inserted into the positioning cylinder.

[0011] As the preferred technical scheme of the above, the open end of the motor cavity is provided with a stepped surface, the stepped surface is provided with a sound insulation pad one, and the edge of the front cover is provided with a sound insulation pad two at the joint with the stepped surface.

[0012] As the preferred technical scheme of the above, the inside of the fixing ring is also provided with a fixing frame symmetrically, the end of the fixing frame close to the permanent magnet synchronous motor is provided with a sound insulation pad four, and the sound insulation pad four is attached to the outer wall of the permanent magnet synchronous motor.

[0013] As the preferred technical scheme of the above, the outside of the positioning block is covered with a sound insulation pad three.

[0014] As the preferred technical scheme of the above, the connecting plate is provided with a plurality of through holes distributed at intervals.

[0015] The beneficial effects of the present application are:

[0016] (1) The present application adopts a multi-point support structure by setting the fixing ring and the plurality of positioning blocks, can more evenly disperse the vibration of the permanent magnet synchronous motor, reduce the local stress concentration, and reduce the noise; and the elastic sound insulation cotton is set, which can also play the role of absorbing vibration and reducing noise under the action of assisting the installation of the positioning block.

[0017] (2) The present application can buffer the vibration generated by the output shaft of the permanent magnet synchronous motor through the sound insulation pad one and the sound insulation pad two, thereby reducing the working noise; and through the cooperation and extrusion between the rubbers, the stability of the front cover installation can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure shows the front view of the integrated shell in the embodiment;

[0019] Figure 2 The figure shows the back view of the integrated shell in the embodiment;

[0020] Figure 3 The figure shows the top view of the integrated shell in the embodiment (from the perspective of the top view);

[0021] Figure 4 The figure shows the front view of the permanent magnet synchronous motor in the embodiment;

[0022] Figure 5 The figure shows the side view of the permanent magnet synchronous motor in the embodiment;

[0023] Figure 6 As shown is Figure 5 the structure enlarged view at A in the embodiment;

[0024] Figure 7 As shown is the schematic view of the connecting plate in the embodiment;

[0025] Figure 8 As shown is the schematic view of the fixed frame and the sound insulation cotton two in the embodiment;

[0026] Figure 9 As shown is Figure 4 the structure enlarged view at B in the embodiment;

[0027] Figure 10 the structure schematic view of the positioning block 43;

[0028] Fig. 10, integrated housing; 11, motor cavity; 12, reducer module; 13, control module; 20, permanent magnet synchronous motor; 31, positioning cylinder; 32, front cover; 33, step surface; 34, sound insulation pad one; 35, sound insulation pad two; 41, fixed ring; 42, positioning groove; 43, positioning block; 431, sound insulation pad three; 44, connecting rod; 45, connecting plate; 451, through hole; 46, spring; 47, elastic sound insulation cotton; 48, fixed frame; 49, sound insulation pad four. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with the embodiments.

[0030] EMBODIMENT

[0031] As Figure 1 , Figure 2 , Figure 3 shown, Figure 1 As shown is the front view schematic view of the integrated housing in the embodiment; Figure 2 As shown is the back view schematic view of the integrated housing in the embodiment; Figure 3 As shown is the top view schematic view (perspective view) of the integrated housing in the embodiment;

[0032] The device comprises:

[0033] The integrated housing 10 is provided with two motor cavities 11 on one side, a reducer module 12 on the other side, and a control module 13 at the top end of the integrated housing 10;

[0034] The permanent magnet synchronous motor 20 is detachably installed in the motor cavity 11.

[0035] The vibration and noise during operation of the permanent magnet synchronous motor 20 are lower than those of a common motor; the permanent magnet synchronous motor 20 can provide higher power output under the same volume and weight, and is particularly suitable for space-limited applications; and the permanent magnet synchronous motor 20 can maintain high efficiency under low-speed and light-load conditions due to the presence of the permanent magnet, and is suitable for energy-saving applications.

[0036] The motor cavity 11 is a cylindrical cavity. The motor module, the reducer module, the control module 13, and the electrical connection between the modules are all prior art.

[0037] As shown in Figure 4 , Figure 9 , Figure 4 Fig. 1 shows a front view structural schematic diagram of the installation of the permanent magnet synchronous motor in the embodiment; Figure 9 Fig. 2 shows an enlarged structural schematic diagram of the structure at B in Figure 4 Fig. 3 shows an enlarged structural schematic diagram of the structure at B in

[0038] The integrated shell 10 is provided with a front cover 32 that closes the open end of the motor cavity 11. The output shaft of the permanent magnet synchronous motor 20 extends to the outside through the front cover 32. The inside of the motor cavity 11 and away from the front cover 32 is provided with a positioning cylinder 31. The end of the permanent magnet synchronous motor 20 away from the output shaft is inserted into the positioning cylinder 31.

[0039] The open end of the motor cavity 11 is provided with a stepped surface 33. The stepped surface 33 is provided with a sound insulation pad one 34. The edge of the front cover 32 is provided with a sound insulation pad two 35 at the joint with the stepped surface 33.

[0040] The front cover 32 not only plays a role in closing the motor cavity 11, but also plays a role in auxiliary supporting the permanent magnet synchronous motor 20. The front cover 32 and the positioning cylinder 31 play a supporting and positioning role on the two ends of the permanent magnet synchronous motor 20, which facilitates the installation and fixation of the permanent magnet synchronous motor 20.

[0041] The sound insulation pad one 34 and the sound insulation pad two 35 are both made of rubber. The stepped surface 33 facilitates the clamping installation of the front cover 32. The front cover 32 is detachably installed on the integrated shell 10 through bolts.

[0042] The sound insulation pad one 34 and the sound insulation pad two 35 can buffer the vibration generated by the output shaft of the permanent magnet synchronous motor 20, thereby reducing the working noise. Through the cooperation and extrusion between rubber and rubber, the stability of the installation of the front cover 32 can be increased.

[0043] As shown in Figure 4 , Figure 5 , Figure 6 , Figure 4 Fig. 1 shows a front view structural schematic diagram of the installation of the permanent magnet synchronous motor in the embodiment; Figure 5 Fig. 2 shows a side view structural schematic diagram of the installation of the permanent magnet synchronous motor in the embodiment; Figure 6As shown Figure 5 The structure of the middle A is enlarged and shown in the schematic view.

[0044] The inner side wall of the motor cavity 11 is provided with a positioning groove 42.

[0045] Further comprising a fixed ring 41 sleeved outside the permanent magnet synchronous motor 20, the fixed ring 41 is elastically provided with a positioning block 43 protruding from the surface thereof, and the positioning block 43 is embedded in the positioning groove 42 in the installed state of the permanent magnet synchronous motor 20.

[0046] In this embodiment, the positioning groove 42 is provided with four, two at the upper and lower ends respectively, and the number and position of the positioning block 43 correspond to the positioning groove 42.

[0047] The fixed ring 41 is sleeved outside the permanent magnet synchronous motor 20, and the positioning block 43 is elastically arranged on the fixed ring 41. The arrangement of the positioning block 43 and the positioning groove 42 makes the installation of the permanent magnet synchronous motor 20 in the motor cavity 11 more stable.

[0048] Through the arrangement of the fixed ring 41 and the plurality of positioning blocks 43, a multi-point support structure is adopted, which can more evenly disperse the vibration of the permanent magnet synchronous motor 20, reduce local stress concentration, and further reduce noise.

[0049] When installing, before the permanent magnet synchronous motor 20 sleeved with the fixed ring 41 is put into the motor cavity 11, the positioning block 43 is compressed by external force to approach the fixed ring 41 until it can smoothly enter the motor cavity 11, then the positioning block 43 is positioned in the motor cavity 11. Corresponding to the position of the positioning groove 42, remove the external force, reset the positioning block 43, at this time the positioning block 43 is embedded in the positioning groove 42.

[0050] As Figure 10 shown, Figure 10 is a structural schematic view of the positioning block 43;

[0051] The outer part of the positioning block 43 is covered with sound insulation pad three 431.

[0052] Through the sound insulation pad three 431 arranged outside the positioning block, the noise is further reduced on the basis of the multi-point support structure.

[0053] The end of the positioning block 43 close to the fixed ring 41 is provided with a connecting rod 44, the other end of the connecting rod 44 extends to the inside of the fixed ring 41 through the fixed ring 41, and the end is further provided with a connecting plate 45 and an elastic sound insulation cotton 47 in sequence. The elastic sound insulation cotton 47 is attached to the surface of the permanent magnet synchronous motor 20, and a section of the connecting rod 44 outside and between the connecting plate 45 and the inner side wall of the fixed ring 41 is further sleeved with a spring 46; the two ends of the spring 46 are connected with the connecting plate 45 and the inner side wall of the fixed ring 41 respectively.

[0054] The elastic sound insulation cotton 47 is a memory sponge with high elasticity, which can be deformed when being pressed by external force, and quickly returns to the original state after the external force is removed, and has excellent sound absorption performance.

[0055] Through the connecting rod 44, the connecting plate 45, the elastic sound insulation cotton 47 and the spring 46, the elastic setting of the positioning block 43 is realized; when installing, external force is applied on the connecting plate 45, so that the connecting plate 45 drives the positioning block 43 to move to the end close to the permanent magnet synchronous motor 20 through the connecting rod 44, at this time the spring 46 is stretched, and the elastic sound insulation cotton 47 is compressed on the outer wall of the permanent magnet synchronous motor 20, until the permanent magnet synchronous motor 20 and the fixing ring 41 can smoothly enter the motor cavity 11, after entering, the positioning block 43 is stably embedded in the positioning groove 42 after the position corresponding to the positioning groove 42, the external force is removed, at this time the elastic sound insulation cotton 47 and the spring 46 are reset, and the positioning block 43 is stably embedded in the positioning groove 42.

[0056] Through the setting of the elastic sound insulation cotton 47, the elastic sound insulation cotton 47 can also play a role in absorbing vibration and reducing noise under the action of assisting the installation of the positioning block 43.

[0057] As shown in Figure 7 , Figure 7 The figure shows the schematic diagram of the connecting plate in the embodiment;

[0058] The connecting plate 45 is provided with a plurality of through holes 451 at intervals;

[0059] The through holes 451 play a role in reducing weight and saving cost.

[0060] As shown in Figure 5 , Figure 8 , Figure 5 The figure shows the side view structure schematic diagram of the permanent magnet synchronous motor installation in the embodiment; Figure 8 The figure shows the schematic diagram of the second sound insulation cotton and the fixed frame in the embodiment;

[0061] The inner side of the fixing ring 41 is also provided with a fixed frame 48, and the fixed frame 48 is provided with a sound insulation pad four 49 close to one end of the permanent magnet synchronous motor 20; the sound insulation pad four 49 is in contact with the outer wall of the permanent magnet synchronous motor 20.

[0062] The fixed frame 48 plays a role in installing the sound insulation pad four 49, and the sound insulation pad four 49 is not easy to deform, which is in contact with the outer wall of the permanent magnet synchronous motor 20, on the one hand, plays a role in buffering vibration and reducing noise; on the other hand, plays a supporting role to the permanent magnet synchronous motor 20, so that the fixing ring 41 can be stably sleeved on the outside of the permanent magnet synchronous motor 20.

[0063] Working principle: the fixed ring 41 is sleeved on the outside of the permanent magnet synchronous motor 20, and then the permanent magnet synchronous motor 20 and the fixed ring 41 are installed into the motor cavity 11 together. When installing, an external force is applied on the connecting plate 45, so that the connecting plate 45 drives the positioning block 43 to move to the end close to the permanent magnet synchronous motor 20 through the connecting rod 44. At this time, the spring 46 is stretched, and the elastic sound insulation cotton 47 is compressed on the outer side wall of the permanent magnet synchronous motor 20, until the permanent magnet synchronous motor 20 and the fixed ring 41 can smoothly enter the motor cavity 11. After entering, the positioning block 43 is correspondingly positioned in the positioning groove 42, then the external force is removed, at this time, the elastic sound insulation cotton 47 and the spring 46 are reset, and the positioning block 43 is stably embedded in the positioning groove 42. In addition, at the same time, the rear end of the permanent magnet synchronous motor 20 is inserted into the positioning cylinder 31, and finally the front cover 32 is installed by bolts.

[0064] The above examples are only used to illustrate the technical solutions of the present application, but not limit it.

Claims

1. A permanent magnet synchronous drive and hydraulic integrated power system, characterized in that, Including: Integrated shell (10), one side of the integrated shell (10) is provided with two motor cavities (11), the motor cavity (11) can be detachably installed with permanent magnet synchronous motor (20); Positioning groove (42), the inner side wall of the motor cavity (11) is provided with a positioning groove (42); The fixed ring (41) is sleeved on the outside of the permanent magnet synchronous motor (20), a plurality of positioning blocks (43) are elastically arranged on the fixed ring (41) and protrude from the surface of the fixed ring (41), one end of the positioning block (43) close to the fixed ring (41) is provided with a connecting rod (44), the other end of the connecting rod (44) extends to the inside of the fixed ring (41) through the fixed ring (41), and the end of the connecting rod (44) is further provided with a connecting plate (45), an elastic sound insulation cotton (47), the elastic sound insulation cotton (47) is attached to the surface of the permanent magnet synchronous motor (20), a section of the connecting rod (44) outside and between the connecting plate (45) and the inner side wall of the fixed ring (41) is further sleeved with a spring (46); The integrated shell (10) is provided with a front cover (32) closing the opening end of the motor cavity (11), the output shaft of the permanent magnet synchronous motor (20) extends to the outside through the front cover (32), the inside of the motor cavity (11) and away from the front cover (32) one end is provided with a positioning cylinder (31), the end of the permanent magnet synchronous motor (20) away from the output shaft is inserted into the positioning cylinder (31); The opening end of the motor cavity (11) is provided with a stepped surface (33), the stepped surface (33) is provided with a sound insulation pad one (34), the edge of the front cover (32) and the stepped surface (33) is provided with a sound insulation pad two (35); The inside of the fixed ring (41) is further provided with a fixed frame (48) symmetrically, one end of the fixed frame (48) close to the permanent magnet synchronous motor (20) is provided with a sound insulation pad four (49), the sound insulation pad four (49) is attached to the outer wall of the permanent magnet synchronous motor (20).

2. The permanent magnet synchronous drive and hydraulic integrated integrated power system according to claim 1, characterized in that, The outside of the positioning block (43) is covered with a sound insulation pad three (431).

3. The permanent magnet synchronous drive and hydraulic integrated integrated power system according to claim 1, characterized in that, A plurality of through holes (451) are distributed on the connecting plate (45).

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