Motor clutch structure

Abstract

The utility model provides a motor clutch structure which comprises a clutch assembly and a torque shaft, the clutch assembly comprises a clutch end cover and a limiting sleeve arranged on the clutch end cover in a protruding mode, the limiting sleeve is provided with a first positioning part, one end of the torque shaft is connected with a motor rotor, and the other end of the torque shaft is connected with a transmission device; the clutch assembly further comprises a clutch shaft and a second positioning part connected with the clutch shaft, the second positioning part is connected with the torque shaft, and the clutch shaft can axially move in the limiting sleeve; the second positioning part is connected with the first positioning part in a matched mode so that the clutch shaft can be limited in the maintenance state, and displacement of the clutch shaft is prevented. The motor clutch structure solves the technical problem that in the prior art, when a motor is maintained, if an included angle exists between the installation of the motor and the horizontal plane, the clutch shaft is prone to axially moving and rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission equipment technical field, concretely relates to a motor clutch structure. BACKGROUND

[0002] The motor clutch is an important mechanical component, which is used for connecting or separating the motor and the transmission device to realize the normal operation and maintenance of the equipment. During the maintenance process, the torque shaft needs to be disconnected from the transmission device so as to check and maintain the motor or related components.

[0003] However, the existing motor clutch has problems in the following situations: if there is an inclination angle between the motor and the horizontal plane during installation, the torque shaft may gradually slide outward due to centrifugal force or vibration during the operation of the equipment, resulting in unstable connection and even accidental disconnection, which affects the safety and reliability of the equipment. When the equipment is in the maintenance state, although the existing clutch shaft has a certain limiting function, the torque shaft and the clutch shaft may slowly slide back to the original position due to gravity in the case of axial inclination angle of the motor, making it difficult to perform maintenance operations.

[0004] Therefore, the prior art needs to be further developed. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the above technical defects, and provides a motor clutch structure to solve the technical problem that the clutch shaft is easy to move axially and rotate when the motor is installed at an angle to the horizontal plane during maintenance in the related art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme: a motor clutch structure is provided, which comprises a clutch assembly and a torque shaft. The clutch assembly comprises a clutch end cover and a limiting sleeve protruding on the clutch end cover. A first positioning part is arranged on the limiting sleeve. One end of the torque shaft is connected to a motor rotor, and the other end is connected to a transmission device. The clutch assembly further comprises a clutch shaft and a second positioning part connected to the clutch shaft. The second positioning part is connected to the torque shaft, and the clutch shaft can move axially in the limiting sleeve. The second positioning part is connected to the first positioning part to limit the clutch shaft in the maintenance state to prevent the clutch shaft from moving.

[0007] Further, the first positioning part is located in the hole of the limiting sleeve, and the diameter of the second positioning part is greater than the diameter of the clutch shaft, so that the second positioning part enters the first positioning part to realize limiting.

[0008] Further, the first positioning part is a groove arranged in the hole of the limiting sleeve. After the second positioning part enters the groove, mechanical limiting is formed to prevent the clutch shaft from moving axially and rotating.

[0009] Further, the recess is provided with an internal thread, and the second positioning part is provided with an external thread matched with the internal thread, when the second positioning part enters the first positioning part, rotating the clutch shaft to make the external thread on the second positioning part threadedly connected with the internal thread in the first positioning part, thereby enhancing the locking in axial direction and rotational direction.

[0010] Further, the diameter of the torque shaft is larger than the diameter of the second positioning part, when the second positioning part is threadedly locked with the first positioning part, the torque shaft abuts against the limiting sleeve.

[0011] Further, the torque shaft is provided with a spline connection part at the end away from the second positioning part, and the spline connection part is connected with the transmission device, when the torque shaft abuts against the limiting sleeve, the spline connection part is disconnected with the transmission device.

[0012] Further, the motor clutch structure further comprises a pull ring and a plurality of fasteners, and the clutch shaft is connected with the pull ring in sequence through the limiting sleeve and the clutch end cover; rotating the pull ring to make it adhere to the clutch end cover, and fixing it on the motor rear end cover through the plurality of fasteners, thereby preventing the clutch shaft from moving in axial direction or rotating during the operation of the motor.

[0013] Further, the plurality of fasteners are detachably arranged, so as to quickly release the pull ring when the clutch shaft needs to be pulled out.

[0014] Further, the motor rear end cover is provided with a V-shaped groove, and the plurality of fasteners respectively pass through the pull ring and enter the V-shaped groove, so as to ensure the stable fixation of the pull ring, thereby preventing the clutch shaft from moving or rotating during the operation.

[0015] Further, the clutch assembly is provided with a moving cavity for the movement of the torque shaft, and a Y-shaped sealing ring is arranged between the motor rotor and the torque shaft, the Y-shaped sealing ring is located at the end of the torque shaft close to the second positioning part, and the Y-shaped mouth of the Y-shaped sealing ring is arranged away from the moving cavity, so as to seal the moving cavity through the Y-shaped sealing ring, thereby preventing the oil between the motor rotor and the torque shaft from entering the moving cavity.

[0016] Advantages:

[0017] 1. The motor clutch structure of the utility model, under the maintenance state, through the cooperation of the first positioning part and the second positioning part, the clutch shaft is effectively prevented from sliding back to the original position due to the gravity, and the maintenance difficulty caused by the retraction of the clutch shaft driving the torque shaft is avoided; during the operation, the clutch shaft is fixed and locked stably through the pull ring and the fastener, the clutch shaft is prevented from moving in axial direction or rotating due to the vibration of the equipment or the centrifugal force of the torque shaft pushing the clutch shaft, the stable connection between the motor and the transmission device is ensured, and the reliability and safety of the system operation are improved.

[0018] 2. The V-shaped groove is designed on the motor rear end cover, so that the fastener enters the V-shaped groove after passing through the pull ring, further ensuring the stability of the pull ring, thereby improving the fixing effect of the clutch shaft in the running state and preventing accidental loosening.

[0019] 3. By arranging the Y-shaped sealing ring between the motor rotor and the torque shaft, and arranging the Y-shaped opening of the Y-shaped sealing ring opposite to the moving cavity, the moving cavity is sealed, the oil in the motor is prevented from entering the moving cavity, the equipment failure caused by oil leakage is reduced, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the existing motor clutch structure;

[0021] Figure 2 is a cross-sectional view of the motor clutch structure adopted in the embodiment of the utility model;

[0022] Figure 3 is Figure 2 is a local enlarged view of part A in the figure;

[0023] Figure 4 is a use state diagram of the motor clutch structure with the clutch shaft extracted, adopted in the embodiment of the utility model;

[0024] Figure 5 is Figure 4 is a local enlarged view of part B in the figure;

[0025] Figure 6 is a schematic diagram of the structure of the pull ring of the motor clutch structure, adopted in the embodiment of the utility model;

[0026] Figure 7 is a sectional view of the Y-shaped sealing ring, adopted in the embodiment of the utility model.

[0027] Among them, the above drawings include the following reference signs:

[0028] 1, clutch assembly; 11, clutch end cover; 12, limiting sleeve; 121, exhaust hole; 13, first positioning part; 14, clutch shaft; 15, second positioning part; 16, moving cavity; 17, end face sealing ring; 18, dustproof ring; 2, torque shaft; 31, pull ring; 32, fastener; 41, spline connection part; 5, motor; 51, motor rotor; 52, motor rear end cover; 53, V-shaped groove; 61, Y-shaped sealing ring; 62, wear-resistant ring; 63, motor end face sealing ring; 64, rotary sealing ring. DETAILED DESCRIPTION

[0029] In order to enable the person skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should be within the scope of protection of the present application.

[0030] According to the embodiment of the utility model, a motor clutch structure is provided, please refer to Figures 1 to 7The clutch structure comprises a clutch assembly 1 and a torque shaft 2, the clutch assembly 1 comprises a clutch end cover 11 and a limiting sleeve 12 protruding on the clutch end cover 11, the limiting sleeve 12 is provided with a first positioning part 13, one end of the torque shaft 2 is connected with a motor rotor 51, and the other end is connected with a transmission device; the clutch assembly 1 further comprises a clutch shaft 14 and a second positioning part 15 connected with the clutch shaft 14, the second positioning part 15 is connected with the torque shaft 2, and the clutch shaft 14 can move axially in the limiting sleeve 12; wherein the second positioning part 15 is connected with the first positioning part 13 in a matched mode to limit the clutch shaft 14 in a maintenance state, so that the displacement of the clutch shaft 14 is prevented. The clutch shaft 14 is connected with the torque shaft 2, and a bearing is arranged between the clutch shaft 14 and the torque shaft 2; when the clutch shaft 14 is pulled out during maintenance, the torque shaft 2 is also moved, so that the torque shaft 2 is disconnected with the transmission device. During the operation of the motor, the torque shaft 2 rotates with the motor rotor 51, and the clutch shaft 14 does not rotate under normal circumstances due to the bearing. If the motor is installed at an angle with the horizontal plane, the pulled-out clutch shaft 14 will slide back to the original position with the torque shaft 2 due to gravity or even make the torque shaft 2 rotate with the transmission device during maintenance, which affects the maintenance. During the maintenance process, the motor sometimes needs to be idled to identify whether there is an abnormal sound in the motor. Although the bearing limits the rotation between the clutch shaft 14 and the torque shaft 2, there is still friction between the bearing balls in the bearing and the clutch shaft 14. Taking the motor rotating at 1500 rpm as an example, the clutch shaft installed with the inner ring will rotate at a low speed under the friction of the bearing balls, and the other end of the conventional clutch shaft is provided with a pull handle for pulling. When the clutch shaft rotates, the pull handle outside the clutch end cover will also rotate, which is easy to hurt the maintenance personnel and has serious safety hazards. Therefore, the displacement of the clutch shaft 14 has two situations, namely axial movement and rotation. In the embodiment, the second positioning part 15 is connected with the first positioning part 13 in a matched mode, that is, the second positioning part 15 at the end of the clutch shaft 14 is fixed with the limiting sleeve 12, so that the axial locking of the clutch shaft 14 and the torque shaft 2 is realized, the pulled-out clutch shaft 14 is prevented from sliding to the original position due to gravity, and the situation that the maintenance personnel is hurt due to the low-speed rotation of the clutch shaft 14 caused by the friction during the idling of the motor is avoided, so that the axial movement and rotation of the clutch shaft 14 after being pulled out (that is, during the maintenance process) are firmly locked, and the maintenance convenience and safety of the equipment are improved. The clutch structure of the embodiment solves the technical problem that the clutch shaft is easy to axially move and rotate during the maintenance of the motor in the related art.

[0031] Referring to Figure 2 and Figure 3The motor clutch structure of the embodiment, the first positioning part 13 is located in the hole of the limiting sleeve 12, the diameter of the second positioning part 15 is larger than the diameter of the clutch shaft 14, so that the second positioning part 15 enters the first positioning part 13 to realize limiting. When the second positioning part 15 completely enters the first positioning part 13, due to the difference in diameter, a close-fitting limiting effect is formed between the two, thereby enhancing the stability of the connection.

[0032] Referring to Figure 2 and Figure 3 The motor clutch structure of the embodiment, the first positioning part 13 is a groove provided in the hole of the limiting sleeve 12, and the second positioning part 15 enters the groove to form mechanical limiting, preventing the clutch shaft 14 from moving axially and rotating. By adopting the mechanical limiting structure, the second positioning part 15 can form stable limiting in the axial and rotational directions after entering the groove. When the second positioning part 15 completely enters the groove, it can ensure that the clutch shaft 14 and the torque shaft 2 connected thereto are stably limited in the axial and radial directions, thereby limiting further movement of the clutch shaft 14 and the torque shaft 2.

[0033] Referring to Figure 2 and Figure 3 The motor clutch structure of the embodiment, the groove is provided with an internal thread, and the second positioning part 15 is provided with an external thread matched with the internal thread. After the second positioning part 15 abuts against the first positioning part 13, the clutch shaft 14 is rotated, so that the external thread on the second positioning part 15 is threadedly connected with the internal thread in the first positioning part 13, thereby enhancing the locking in the axial and rotational directions. The thread structure can further enhance the locking effect of the clutch shaft 14 in the axial and rotational directions.

[0034] Referring to Figure 4 and Figure 5 The motor clutch structure of the embodiment, the diameter of the torque shaft 2 is larger than the diameter of the second positioning part 15. After the second positioning part 15 is threadedly locked with the first positioning part 13, the torque shaft 2 abuts against the limiting sleeve 12. The abutment of the torque shaft 2 and the limiting sleeve 12 serves as an explicit sign of pulling into position, so that the operator can quickly and accurately judge whether the torque shaft 2 has been completely disconnected from the transmission device without complicated inspection or measurement.

[0035] Referring to Figure 2 and Figure 4The motor clutch structure of the embodiment is provided with a spline connection part 41 at one end of the torque shaft 2 away from the second positioning part 15, and the spline connection part 41 is connected with the transmission device. When the torque shaft 2 abuts against the limiting sleeve 12, the spline connection part 41 is disconnected with the transmission device. The abutment of the torque shaft 2 against the limiting sleeve 12 serves as an intuitive disconnection indication, so that the operator can quickly judge whether the spline connection part 41 has been disconnected with the transmission device. Such clear indication reduces the possibility of misoperation, and improves the accuracy and safety of operation.

[0036] Referring to Figure 2 and Figure 4 The motor clutch structure of the embodiment further comprises a pull ring 31 and a plurality of fasteners 32. The clutch shaft 14 is connected with the pull ring 31 in sequence through the limiting sleeve 12 and the clutch end cover 11. The pull ring 31 is rotated to be attached to the clutch end cover 11, and is fixed to the motor rear end cover 52 through the plurality of fasteners 32, so as to prevent the clutch shaft 14 from moving axially or rotating during the operation of the motor 5. By arranging the pull ring 31 on the clutch shaft 14 and fixing it to the motor rear end cover 52 through the plurality of fasteners 32, the clutch shaft 14 can be reliably locked during the operation of the equipment. This structure effectively prevents the clutch shaft 14 from moving axially or rotating due to vibration or centrifugal force of the torque shaft 2 pushing the clutch shaft 14 during the operation. The addition of the fasteners 32 and the close attachment of the pull ring 31 to the clutch end cover 11 together ensure the stability of the clutch shaft 14 in the axial direction, effectively preventing the clutch shaft 14 from loosening or rotating during the operation.

[0037] Referring to Figure 2 and Figure 4 The motor clutch structure of the embodiment is provided with a plurality of fasteners 32, which are detachably arranged so as to quickly release the pull ring 31 when the clutch shaft 14 needs to be pulled out. When the torque shaft 2 needs to be disconnected with the transmission device, the plurality of fasteners 32 are detached to release the pull ring 31, and the pull ring 31 is pulled to move the clutch shaft 14 and the torque shaft 2.

[0038] Referring to Figure 3 and Figure 5The motor clutch structure of the embodiment is provided with a V-shaped groove 53 on the rear end cover 52 of the motor, and a plurality of fasteners 32 respectively pass through the pull ring 31 and enter the V-shaped groove 53, which ensures the stable fixation of the pull ring 31, thereby preventing the clutch shaft 14 from moving or rotating during operation. The fasteners 32 pass through the pull ring 31 and firmly embed the pull ring 31 in the V-shaped groove 53, which effectively limits the axial freedom of the clutch shaft 14 and the rotational freedom of the pull ring 31 during operation. During maintenance, the threaded engagement structure of the first positioning part 13 and the second positioning part 15 can limit the axial freedom of the clutch shaft 14, and when the torque shaft 2 abuts against the limiting sleeve 12, the rotational freedom of the pull ring 31 is limited at this time.

[0039] Referring to Figure 2 and Figure 7 The motor clutch structure of the embodiment is provided with a moving cavity 16 for the movement of the torque shaft 2 in the clutch assembly 1, and a Y-shaped sealing ring 61 is arranged between the motor rotor 51 and the torque shaft 2. The Y-shaped sealing ring 61 is located at one end of the torque shaft 2 close to the second positioning part 15, and the Y-shaped port of the Y-shaped sealing ring 61 is arranged away from the moving cavity 16, thereby sealing the moving cavity 16 through the Y-shaped sealing ring 61 to prevent oil between the motor rotor 51 and the torque shaft 2 from entering the moving cavity 16. The front side bearing of the motor is lubricated with thin oil, and the source of the thin oil is the gear box of the transmission device. There is a motor end face sealing ring 63 on the front end face of the motor to prevent the thin oil from leaking outward. A rotary sealing ring 64 is arranged between the front side shell of the motor and the motor rotor 51, and a rotary sealing ring structure is arranged at the rear side of the bearing to prevent the thin oil from seeping into the motor. Since the torque shaft is a consumable part and needs to be replaced frequently, the torque shaft and the inner wall of the motor rotor are not sealed, and the thin oil will spread to the end of the torque shaft 2. Therefore, the Y-shaped sealing ring 61 is arranged at one end of the torque shaft 2 close to the second positioning part 15, and the Y-shaped port thereof is arranged away from the moving cavity 16. This layout ensures that the Y-shaped sealing ring 61 can effectively seal the moving cavity 16 to prevent oil from entering the moving cavity 16 from the gap between the motor rotor 51 and the torque shaft 2. This helps to keep the moving cavity 16 clean and dry, avoiding failures or performance degradation caused by oil leakage.

[0040] In addition, referring to Figure 3 In the motor clutch structure of the embodiment, a wear-resistant ring 62 is also used to position the torque shaft 2. Compared with Figure 1 the existing sealing ring structure, the length of the positioning surface is reduced, and the resistance of the clutch shaft 14 and the torque shaft 2 to pull out is reduced.

[0041] Referring to Figure 3 In the motor clutch structure of the embodiment, the limiting sleeve 12 is designed with an exhaust hole 121 to exhaust excess air in the moving cavity 16 during threaded engagement, preventing compressed air from causing difficulty in pulling out the torque shaft 2.

[0042] Referring toFigure 3 In the motor clutch structure of the embodiment, the end face sealing ring 17 is added below the clutch end cover 11, and the dustproof ring 18 is added between the clutch end cover 11 and the clutch shaft 14, and the end face sealing ring 17 and the dustproof ring 18 are used in cooperation to prevent the cleaning water and the coal dust from entering the moving cavity 16.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and in the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] Optionally, the specific examples in the embodiments can refer to the examples described in the above-described embodiments, and the embodiments will not be described here.

[0045] The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0046] In the above-described embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0047] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A motor clutch structure, characterized in that, include: The clutch assembly (1) and torque shaft (2) include a clutch end cover (11) and a limiting sleeve (12) protruding on the clutch end cover (11). The limiting sleeve (12) is provided with a first positioning part (13). One end of the torque shaft (2) is connected to the motor rotor (51), and the other end is connected to the transmission device. The clutch assembly (1) further includes a clutch shaft (14) and a second positioning part (15) connected to the clutch shaft (14). The second positioning part (15) is connected to the torque shaft (2). The clutch shaft (14) can move axially within the limiting sleeve (12). The second positioning part (15) is connected to the first positioning part (13) to limit the clutch shaft (14) in the maintenance state and prevent the clutch shaft (14) from being displaced.

2. The motor clutch structure according to claim 1, characterized in that, The first positioning part (13) is located inside the hole of the limiting sleeve (12), and the diameter of the second positioning part (15) is larger than the diameter of the clutch shaft (14) so ​​that the second positioning part (15) can enter the first positioning part (13) to achieve the limiting.

3. The motor clutch structure according to claim 2, characterized in that, The first positioning part (13) is a groove provided in the hole of the limiting sleeve (12). After the second positioning part (15) enters the groove, it forms a mechanical limit to prevent the clutch shaft (14) from moving and rotating axially.

4. The motor clutch structure according to claim 3, characterized in that, The groove is provided with an internal thread, and the second positioning part (15) is provided with an external thread that matches the internal thread. When the second positioning part (15) enters the first positioning part (13), the clutch shaft (14) is rotated so that the external thread on the second positioning part (15) is threadedly connected with the internal thread in the first positioning part (13), thereby enhancing the locking of the axial direction and the rotation direction.

5. The motor clutch structure according to claim 4, characterized in that, The diameter of the torque shaft (2) is greater than the diameter of the second positioning part (15). When the second positioning part (15) is threadedly locked with the first positioning part (13), the torque shaft (2) abuts against the limiting sleeve (12).

6. The motor clutch structure according to claim 5, characterized in that, The torque shaft (2) is provided with a spline connection part (41) at one end away from the second positioning part (15). The spline connection part (41) is connected to the transmission device. When the torque shaft (2) abuts against the limiting sleeve (12), the spline connection part (41) is disconnected from the transmission device.

7. The motor clutch structure according to claim 1, characterized in that, The motor clutch structure also includes a pull ring (31) and a plurality of fasteners (32). The clutch shaft (14) passes through the limiting sleeve (12) and the clutch end cover (11) in sequence and is connected to the pull ring (31). The pull ring (31) is rotated to fit against the clutch end cover (11) and secured to the motor rear end cover (52) by a plurality of the fasteners (32), thereby preventing the clutch shaft (14) from moving axially or rotating during the operation of the motor (5).

8. The motor clutch structure according to claim 7, characterized in that, Multiple fasteners (32) are detachably provided so that the pull ring (31) can be quickly released when the clutch shaft (14) needs to be pulled out.

9. The motor clutch structure according to claim 8, characterized in that, The motor rear end cover (52) is provided with a V-groove (53). Multiple fasteners (32) pass through the pull ring (31) and enter the V-groove (53) respectively to ensure that the pull ring (31) is stably fixed, thereby preventing the clutch shaft (14) from moving or rotating during operation.

10. The motor clutch structure according to claim 1, characterized in that, The clutch assembly (1) is provided with a moving cavity (16) for the torque shaft (2) to move. A Y-shaped sealing ring (61) is provided between the motor rotor (51) and the torque shaft (2). The Y-shaped sealing ring (61) is located at one end of the torque shaft (2) near the second positioning part (15). The Y-shaped opening of the Y-shaped sealing ring (61) is opposite to the moving cavity (16), thereby sealing the moving cavity (16) through the Y-shaped sealing ring (61) to prevent oil between the motor rotor (51) and the torque shaft (2) from entering the moving cavity (16).

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