Large-tonnage electric loading motor

Abstract

The large-tonnage electric loading motor comprises an adjusting cover, the extending end of a rotating shaft penetrates through a rear end cover and extends to the outside, and the section, located outside, of the extending end of the rotating shaft is fixedly sleeved with the adjusting cover; the adjusting cover comprises a cover plate, and a movable block is arranged on the cover plate in a sliding and inlaid mode. The movable block at least comprises two states: in the first state, the movable block and the cover plate are spliced to form a complete cover body, and the cover body covers the outer side of the rear end cover and shields the first ventilation opening; in the second state, the movable block slides to the end away from the extending end of the rotating shaft, and a second ventilation opening is formed in the cover plate. Opening and closing of the first ventilation opening can be dynamically adjusted through the arranged adjusting cover according to the actual working state of the motor, and when the motor is in the working state, heat dissipation is conducted; and in a non-working state, the ventilation opening I is shielded and covered, so that the ventilation opening I is matched with the dustproof filter screen on the rear end cover, and fine dust particles can be more effectively filtered through double protection.

Description

Technical Field

[0001] The invention belongs to the technical field of electric loaders, and in particular relates to a large-tonnage electric loading motor. Background Art

[0002] Large tonnage electric loading motors generally refer to electric drive systems used in heavy equipment such as mining trucks, large loaders, excavators, etc.

[0003] In the prior art, electric loading motors that need to dissipate heat are generally provided with vents to facilitate air circulation inside and outside the motor and dissipate heat. However, when the motor stops working, the presence of the vents makes it easy for dust, sand and other particles in the external environment to enter the motor. In addition to dust, moisture in the air may also enter the motor through the vents. Especially if the motor works in a humid or rainy environment, moisture may affect the insulation performance of the motor and increase the risk of short circuit. The existing practice is to use a film bag to seal the motor as a whole to prevent dust and moisture from entering. This operation requires a lot of extra manpower and material resources. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] The present invention provides a large-tonnage electric loading motor, comprising:

[0006] A rotor assembly, the rotor assembly comprising a rotating shaft at the front end and a rotating shaft extension at the rear end, a heat dissipation fan being fixedly sleeved on the rotating shaft;

[0007] A housing, the housing being arranged outside the rotor assembly, the housing comprising a rear end cover, and a vent first being arranged on the rear end cover;

[0008] An adjustment cover, wherein the extension end of the rotating shaft passes through the rear end cover and extends to the outside, and the adjustment cover is fixedly sleeved on a section of the extension end of the rotating shaft located on the outside;

[0009] The adjustment cover comprises a cover plate, and a movable block is slidably embedded on the cover plate;

[0010] The activity block includes at least two states:

[0011] State 1: the movable block and the cover plate are assembled to form a complete cover body, which is arranged on the outside of the rear end cover and blocks the vent 1;

[0012] State 2: the movable block slides to an end away from the extending end of the rotating shaft, and a second vent is formed on the cover plate, and the position of the second vent corresponds to that of the first vent.

[0013] As a preferred embodiment of the above technical solution, a dust filter is installed in the ventilation opening 1.

[0014] As a preferred embodiment of the above technical solution, connecting grooves are symmetrically arranged at the position where the movable block is arranged on the cover plate, a guide rod is fixedly arranged in the connecting groove, sliders are arranged at both ends of the movable block, the sliders are slidably sleeved on the outside of the guide rod, and a spring is also sleeved on the guide rod.

[0015] As a preferred embodiment of the above technical solution, the adjustment cover also includes a scraper rod, which is arranged at one end close to the rear end cover and fits with the dust filter.

[0016] As a preferred embodiment of the above technical solution, the cover plate includes a sleeve portion, and the scraper rod is arranged on the outer periphery of the sleeve portion of the cover plate and does not overlap with the second position of the vent.

[0017] As a preferred embodiment of the above technical solution, six movable blocks are arranged along the circumference of the cover plate.

[0018] The beneficial effects of the present invention are:

[0019] The present invention can dynamically adjust the opening and closing of the vent one according to the actual working state of the motor by setting an adjustment cover. When the motor is in working state, the movable block slides to form the vent two, which corresponds to the vent one for air circulation to dissipate heat. In the non-working state, the vent one is shielded and covered, thereby cooperating with the dust filter on the rear end cover. The double protection can more effectively filter out fine dust particles and further enhance the dustproof effect. In addition, in a humid or rainy environment, the waterproof performance of the motor can be significantly improved, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 What is shown is a schematic diagram of the main structure of the motor in the embodiment;

[0021] Figure 2 What is shown is a schematic diagram of the rear end cover in the embodiment (side view);

[0022] Figure 3 What is shown is a schematic diagram of the adjustment plate in the embodiment (side view);

[0023] Figure 4 The diagram shows the structure of the movable block of the adjusting plate in the embodiment in the extended state. Figure 1 ;

[0024] Figure 5 The diagram shows the structure of the movable block of the adjusting plate in the embodiment in the extended state. Figure 2 (side view);

[0025] Figure 6 It is shown that Figure 5 A schematic diagram of the structure enlargement in the middle;

[0026] Figure numerals: 10, rotor assembly; 11, rotating shaft; 12, rotating shaft extension end; 20, housing; 21, rear end cover; 22, mounting hole one; 23, dust filter; 30, cooling fan; 40, adjustment cover; 41, socket part; 411, mounting hole two; 42, cover plate; 421, connecting groove; 422, guide rod; 423, spring; 43, movable block; 431, slider; 44, vent two; 50, scraper rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0028] Example

[0029] like Figure 1 , Figure 2 As shown, Figure 1 What is shown is a schematic diagram of the main structure of the motor in the embodiment; Figure 2 What is shown is a schematic diagram of the rear end cover in the embodiment (side view);

[0030] The device comprises: a rotor assembly 10 and a housing 20, wherein the rotor assembly 10 comprises a rotating shaft 11 at the front end and a rotating shaft extension end 12 at the rear end, and a heat dissipation fan 30 is fixedly sleeved on the rotating shaft 11;

[0031] The housing 20 is disposed outside the rotor assembly 10 , and the housing 20 includes a rear end cover 21 , and a vent 1 is disposed on the rear end cover 21 , and a dust filter 23 is installed in the vent 1 .

[0032] The rear end cover 21 is also provided with a mounting hole 22 for the shaft extension end 12 to pass through; the vent 1 is annular in shape.

[0033] The cooling fan 30 rotates with the rotating shaft 11 when the motor is working, and realizes heat exchange between the inside of the housing 20 and the outside through the vent 1 to achieve heat dissipation. The dust filter 23 can prevent large particles of dust, sand and other impurities from entering the motor, thereby protecting the key components of the motor from pollution. The housing 20 is not completely closed, and there are air inlets on the housing 20 for the cooling fan 30 to effectively drive the air inside and outside the housing 20 to flow.

[0034] like Figure 1 As shown, Figure 1 What is shown is a schematic diagram of the main structure of the motor in the embodiment;

[0035] The shaft extension end 12 passes through the rear end cover 21 and extends to the outside, and an adjustment cover 40 is fixedly sleeved on a section of the outside, and the adjustment cover 40 rotates together with the shaft extension end 12;

[0036] like Figure 4 , Figure 5 As shown, Figure 4 The diagram shows the structure of the movable block of the adjusting plate in the embodiment in the extended state. Figure 1 ; Figure 5 The diagram shows the structure of the movable block of the adjusting plate in the embodiment in the extended state. Figure 2 (side view);

[0037] The adjustment cover 40 includes a cover plate 42, and a movable block 43 is slidably embedded on the cover plate 42;

[0038] Activity block 43 includes at least two states:

[0039] State 1: The movable block 43 and the cover plate 42 are assembled to form a complete cover body, which is arranged on the outside of the rear end cover 21;

[0040] State 2: the movable block 43 slides to the end away from the shaft extension end 12 , and at this time, a second vent 44 is formed on the cover plate 42 , and the position of the second vent 44 corresponds to that of the first vent.

[0041] The state of the movable block 43 corresponds to the non-working state of the motor, that is, the extending end 12 of the rotating shaft is in a stationary state. At this time, the movable block 43 and the cover plate 42 are assembled to form a complete cover body, and a ventilating opening of the rear end cover 21 is shielded and covered, thereby cooperating with the dust filter 23 on the rear end cover 21. The double protection can more effectively filter out fine dust particles and further enhance the dustproof effect. In addition, in a humid or rainy environment, the waterproof performance of the motor can be significantly improved, thereby extending its service life.

[0042] State 2 of the movable block 43 corresponds to the working state of the motor, that is, when the shaft extension end 12 drives the cover plate 42 to rotate synchronously, the movable block 43 slides to the end away from the shaft extension end 12. At this time, the vent 2 44 formed on the cover plate 42 corresponds to the position of the vent 1, thereby opening the vent 1 of the rear end cover 21 to allow the motor to dissipate heat normally.

[0043] The adjustable cover 40 can dynamically adjust the opening and closing of the vent 1 according to the actual working state of the motor. When the motor is in working state, the movable block 43 slides to form the vent 2 44, which corresponds to the vent 1 for air circulation and heat dissipation; in the non-working state, the vent 1 is covered to prevent dust and moisture.

[0044] Specifically, a plurality of movable blocks 43 are provided, and six movable blocks 43 are provided on the cover plate 42 along the circumferential direction.

[0045] like Figure 6 As shown, Figure 6 It is shown that Figure 5 A schematic diagram of the structure enlargement in the middle;

[0046] A connecting groove 421 is symmetrically arranged at the position where the movable block 43 is arranged on the cover plate 42, a guide rod 422 is fixedly arranged in the connecting groove 421, sliders 431 are arranged at both ends of the movable block 43, the sliders 431 are slidably sleeved on the outside of the guide rod 422, and a spring 423 is also sleeved on the guide rod 422.

[0047] The installation of the movable block 43 is achieved by setting the connecting groove 421, the guide rod 422, and the slider 431. When the shaft extension end 12 rotates, the movable blocks 43 move away from each other under the action of centrifugal force, that is, the movable block 43 is in state two, and the vent 2 44 is formed at this time. The setting of the spring 423 enables the movable block 43 to reset in the absence of external force and switch back to state one.

[0048] like Figure 3 , Figure 4 As shown, Figure 3 What is shown is a schematic diagram of the adjustment plate in the embodiment (side view); Figure 4 The diagram shows the structure of the movable block of the adjusting plate in the embodiment in the extended state. Figure 1 ;

[0049] The adjustment cover 40 further includes a scraper rod 50 , which is disposed at one end close to the rear end cover 21 and fits the dust filter 23 . When the adjustment cover 40 rotates with the shaft extension end 12 , the scraper rod 50 scrapes off the dust attached to the dust filter 23 .

[0050] The scraper rod 50 is provided so that the dust filter 23 can be cleaned automatically and regularly during the operation of the motor, reducing the need for manual maintenance. The operator does not need to frequently stop the machine for manual cleaning, saving time and labor.

[0051] Specifically, the cover plate 42 includes a sleeve portion 41, the sleeve portion 41 includes a second mounting hole 411, the shaft extension end 12 is inserted into the second mounting hole 411 and fixedly connected to the sleeve portion 41, and the scraper rod 50 is arranged on the outer periphery of the sleeve portion 41 of the cover plate 42 and does not overlap with the position of the second vent 44.

[0052] The scraper bar 50 may be provided in one or more forms.

[0053] Working principle: The device is provided with an adjustable cover 40. When the motor is not in operation, that is, when the shaft extension end 12 is in a stationary state, the movable block 43 and the cover plate 42 are assembled to form a complete cover body, which shields the vent of the rear end cover 21 to prevent dust and moisture.

[0054] When the motor is in working state, the shaft extension end 12 drives the cover plate 42 to rotate synchronously, and the movable block 43 on the cover plate 42 will slide to the end of the cover plate 42 away from the shaft extension end 12. At this time, the vent 2 44 formed on the cover plate 42 corresponds to the position of the vent 1, so that the motor can dissipate heat normally.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. Large tonnage electric loading motor, characterized in that: include: A rotor assembly (10), the rotor assembly (10) comprising a rotating shaft (11) at a front end and a rotating shaft extension end (12) at a rear end, a heat dissipation fan (30) being fixedly sleeved on the rotating shaft (11); A housing (20), the housing (20) being arranged outside the rotor assembly (10), the housing (20) comprising a rear end cover (21), and a vent first being arranged on the rear end cover (21); An adjustment cover (40), wherein the shaft extension end (12) passes through the rear end cover (21) and extends to the outside, and the adjustment cover (40) is fixedly sleeved on a section of the shaft extension end (12) located on the outside; The adjustment cover (40) comprises a cover plate (42), and a movable block (43) is slidably embedded on the cover plate (42); The activity block (43) includes at least two states: State 1: the movable block (43) and the cover plate (42) are assembled to form a complete cover body, which is arranged on the outside of the rear end cover (21) and blocks the ventilation opening 1; State 2: the movable block (43) slides to an end away from the shaft extension end (12), and a second vent (44) is formed on the cover plate (42), and the second vent (44) corresponds to the position of the first vent.

2. The large-tonnage electric loading motor according to claim 1, characterized in that: A dustproof filter (23) is installed in the ventilation opening 1.

3. The large-tonnage electric loading motor according to claim 1, characterized in that: A connecting groove (421) is symmetrically arranged at the position where the movable block (43) is arranged on the cover plate (42), a guide rod (422) is fixedly arranged in the connecting groove (421), sliders (431) are arranged at both ends of the movable block (43), the sliders (431) are slidably sleeved on the outside of the guide rod (422), and a spring (423) is also sleeved on the guide rod (422).

4. The large-tonnage electric loading motor according to claim 1, characterized in that: The adjustment cover (40) further comprises a scraper rod (50), wherein the scraper rod (50) is arranged at one end close to the rear end cover (21) and is in contact with the dustproof filter screen (23).

5. The large-tonnage electric loading motor according to claim 4, characterized in that: The cover plate (42) comprises a sleeve portion (41), and the scraper rod (50) is arranged on the outer periphery of the sleeve portion (41) of the cover plate (42) and does not overlap with the position of the second ventilation opening (44).

6. The large-tonnage electric loading motor according to claim 1, characterized in that: Six movable blocks (43) are arranged along the circumference of the cover plate (42).

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