Rotary drive connecting device convenient for remote replacement operation

Abstract

The utility model discloses a rotary drive connecting device convenient for long-distance replacement operation, which comprises a motor box and a gear box, a drive motor and a first coupler which are connected with each other are arranged in the motor box, and a second coupler and a drive gear which are connected with each other are arranged in the gear box. The first coupler and the second coupler are in transmission connection through tooth meshing, the second coupler is connected with the driving gear through the transmission shaft, the second coupler and the transmission shaft are sleeved with each other, the second coupler can move in the axial direction of the transmission shaft but cannot rotate relative to the transmission shaft, and the transmission shaft is sleeved with the spring which abuts against the second coupler. According to the utility model, the transmission shaft and the spring are additionally arranged, so that the second coupling and the first coupling can realize the matching of the tooth crest and the tooth groove in a self-adaptive manner, thereby greatly simplifying the butt-joint operation flow during assembly on the premise of long-distance replacement operation, reducing the butt-joint difficulty, improving the operation efficiency and reducing the maintenance cost.

Description

Technical Field

[0001] The utility model relates to a rotary drive connection device, in particular to a rotary drive connection device convenient for long-distance replacement operation. Background Technique

[0002] The movement of some equipment is driven by a rotary drive device installed on the equipment. For example, a drive system that uses a rotary drive device based on motor drive and reducer speed change to control the movement of the large traveling wheel shaft in a certain equipment. Since motors, reducers, etc. are vulnerable parts, they need to be regularly maintained and replaced during use.

[0003] For equipment working in extreme environments (such as high temperature, toxic or radioactive), on the one hand, the service life of electronic equipment is shorter and needs to be replaced more frequently. On the other hand, due to the particularity of the use environment, it is inconvenient for operators to directly enter for maintenance, resulting in more difficult replacement of vulnerable parts of the rotary drive device.

[0004] To solve the above problem of difficult replacement, generally two traditional methods are currently adopted: one is to place the rotary drive device externally and transmit power to the end through a long transmission chain; the other is to add a first coupling and a second coupling based on gear meshing transmission connection in the transmission components, place the first coupling in the motor box, place the second coupling in the gear box, set a docking hook on the motor box, and lead the wires out through a wire pipe, so that the motor box can be remotely operated by a lifting tool or a manipulator, etc. to achieve rapid docking between the motor box and the gear box. In this way, the motor box and its internal components and the gear box and its internal components together constitute the rotary drive connection device.

[0005] The above two traditional methods both have their respective defects, which are specifically as follows:

[0006] For the first traditional method, using a transmission chain, to transmit the externally placed power to the end of the equipment power execution, a long transmission chain needs to be set, the structure is complex, the transmission accuracy is poor, and some structures cannot be externally realized.

[0007] The second traditional method is the quick docking between the motor box and the gear box. Since the tooth tip and tooth groove of the first coupling and the second coupling need to cooperate with each other to complete the docking between the two, during the docking process, it is necessary to start the motor to drive the first coupling to rotate, or manually control the relative rotation between the first coupling and the second coupling, so as to make the tooth tip and tooth groove of the first coupling and the second coupling cooperate to complete the docking. This process is very difficult to control remotely. Because to make the first coupling have the power to approach the second coupling and make the first coupling and the second coupling rotate relative to each other, specific tools must be used to basically achieve it, but the operation difficulty is still relatively large, time-consuming and laborious, resulting in low replacement operation efficiency and high maintenance cost. In addition, after the docking between the first coupling and the second coupling is completed in this traditional method, it is also necessary to tighten the screws to connect the motor box and the gear box to complete the entire assembly operation process, and the operation difficulty of tightening the screws remotely is also relatively large, which will also reduce the efficiency and increase the maintenance cost. Summary of the Invention

[0008] The purpose of the present invention is to provide a rotary drive connection device that can realize the adaptive docking function of two couplings and is convenient for remote replacement operation in order to solve the above problems.

[0009] The present invention achieves the above object through the following technical solutions:

[0010] A rotary drive connection device convenient for remote replacement operation, including a motor box and a gear box. A drive motor and a first coupling are installed in the motor box. The first coupling is connected to the rotating shaft of the drive motor. A second coupling and a drive gear are installed in the gear box. The second coupling is connected to the drive gear. The first coupling and the second coupling are connected by tooth meshing transmission. The second coupling is connected to the drive gear through a transmission shaft that can freely rotate around its own center line. The second coupling and the transmission shaft are sleeved with each other and the second coupling can move axially on the transmission shaft but cannot rotate relative to the transmission shaft. A spring is sleeved outside the transmission shaft and abuts against the second coupling.

[0011] Preferably, in order to more reliably achieve the adaptive docking function between the first coupling and the second coupling and facilitate long-distance docking operations, the first coupling is located at the lower end of the motor box, a docking hook is provided at the upper end of the motor box, the second coupling is located at the upper end of the gear box, the lower end of the first coupling and the upper end of the second coupling are connected by meshing transmission of teeth, a blind hole is provided in the lower part of the second coupling and it is sleeved outside the upper section of the transmission shaft through this blind hole, and a key connection for preventing relative rotation is provided between the hole wall of the blind hole and the outer wall of the upper section of the transmission shaft. The upper end of the spring abuts against the lower part or the middle part of the second coupling, the lower end of the spring contacts the corresponding support part in the gear box, and the middle section of the transmission shaft is installed in the gear box through a bearing.

[0012] Preferably, in order to adjust the direction of the rotational power to meet the application requirements, the driving gear includes a first driving bevel gear and a second driving bevel gear. The lower end of the transmission shaft is placed in the central through hole of the first driving bevel gear and fixedly connected, and the first driving bevel gear and the second driving bevel gear are meshed and connected.

[0013] Preferably, in order to utilize the magnetism of the permanent magnet to achieve the functions of rapid positioning connection and separation between the motor box and the gear box and avoid the operation difficulties, time-consuming and laborious problems brought by using screw connections, a connection seat is connected to the lower end of the motor box. A vertical through hole is provided in the middle of the connection seat, and the lower part of the first coupling is placed in this vertical through hole. A plurality of permanent magnets are installed at the upper position near the periphery in the connection seat. Connection holes with open lower ends are respectively provided at positions below the plurality of permanent magnets in the connection seat. Metal pins or metal bolts are respectively installed at positions corresponding to the plurality of connection holes at the upper end of the gear box. The upper ends of the plurality of metal pins or metal bolts are respectively placed in the plurality of connection holes. A docking sleeve with an upward protrusion and an open upper end is provided in the middle of the upper end of the gear box. The upper part of the second coupling is placed in the docking sleeve, and the docking sleeve is placed in the vertical through hole of the connection seat.

[0014] Preferably, in order to adjust the rotational driving speed and increase the control reliability, a speed reducer and a clutch are provided in the motor box. The rotating shaft of the driving motor is connected to the input end of the speed reducer, the output end of the speed reducer is connected to the input end of the clutch, and the output end of the clutch is connected to the first coupling.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By adding a transmission shaft and a spring, the second coupling can axially move but not rotate relative to the transmission shaft, and the spring is used to hold the second coupling. When docking the first coupling and the second coupling, it is not necessary to ensure that the tooth tops and tooth grooves of the first coupling and the second coupling are in cooperation. After connecting the motor box and the gear box, the spring can have elastic pressure. When the driving motor starts during use, as the first coupling rotates, under the elastic force of the spring, the second coupling and the first coupling can adaptively achieve the cooperation of tooth tops and tooth grooves, thus automatically completing the tooth meshing transmission function. In this way, on the premise of long-distance replacement operation, the docking operation process during assembly is greatly simplified, the docking difficulty is reduced, the operation efficiency is improved, and the maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the rotary drive connection device for facilitating long-distance replacement operation of the present utility model;

[0018] Figure 2 is Figure 1 the A-A cross-sectional view in

[0019] Figure 3 is Figure 1 the B-B cross-sectional view in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below with reference to the drawings:

[0021] As Figures 1 - 3 shown, the rotary drive connection device for facilitating long-distance replacement operation of the present utility model includes a motor box 2 and a gear box 6. A driving motor 7 and a first coupling 14 are installed in the motor box 2. The first coupling 14 is connected to the rotating shaft of the driving motor 7. A second coupling 15 and a driving gear (refer to the following first driving bevel gear 12 and second driving bevel gear 13) are installed in the gear box 6. The second coupling 15 is connected to the driving gear. The first coupling 14 and the second coupling 15 are connected by tooth meshing transmission. The second coupling 15 is connected to the driving gear through a transmission shaft 18 that can freely rotate around its own center line. The second coupling 15 and the transmission shaft 18 are sleeved with each other, and the second coupling 15 can axially move on the transmission shaft 18 but cannot rotate relative to the transmission shaft 18. A spring 17 is sleeved outside the transmission shaft 18 and holds the second coupling 15.

[0022] As Figures 1 - 3 shown, the present utility model also discloses the following various more optimized specific structures:

[0023] In order to more reliably achieve the adaptive docking function between the first coupling 14 and the second coupling 15 and facilitate the long-distance docking operation, the first coupling 14 is located at the lower end of the motor box 2, a docking hook 1 is provided at the upper end of the motor box 2, the second coupling 15 is located at the upper end of the gear box 6, and the lower end of the first coupling 14 and the upper end of the second coupling 15 are connected by meshing transmission. A blind hole (or through hole) is provided in the lower part of the second coupling 15, and the upper section of the transmission shaft 18 is sleeved through the blind hole, and the inner wall of the blind hole and the outer wall of the upper section of the transmission shaft 18 are connected by a key 16 for preventing relative rotation. The upper end of the spring 17 abuts against the lower part or the middle part of the second coupling 15, and the lower end of the spring 17 contacts the corresponding supporting part in the gear box 6 (the supporting part is set as required, and its structure is not specifically limited). The middle section of the transmission shaft 18 is installed in the gear box 6 through a bearing.

[0024] In order to adjust the direction of the rotational power to meet the application requirements, the driving gear includes a first driving bevel gear 12 and a second driving bevel gear 13. The lower end of the transmission shaft 18 is placed in the central through hole of the first driving bevel gear 12 and fixedly connected, and the first driving bevel gear 12 and the second driving bevel gear 13 are meshed and connected.

[0025] In order to utilize the magnetism of the permanent magnet to achieve the rapid positioning connection and separation function between the motor box 2 and the gear box 6 and avoid the operation difficulties, time-consuming and laborious problems caused by using screw connections, a connecting seat 3 is connected to the lower end of the motor box 2. A vertical through hole is provided in the middle of the connecting seat 3, and the lower part of the first coupling 14 is placed in the vertical through hole. A plurality of permanent magnets 10 are installed at the upper position near the periphery in the connecting seat 3. Connecting holes 11 with open lower ends are respectively provided at the positions below the plurality of permanent magnets 10 in the connecting seat 3. Metal pins 5 (or metal bolts) are respectively installed at the positions corresponding to the plurality of connecting holes 11 at the upper end of the gear box 6. The upper ends of the plurality of metal pins 5 (or metal bolts) are respectively placed in the plurality of connecting holes 11. A docking sleeve 4 with an upward protrusion and an open upper end is provided in the middle of the upper end of the gear box 6. The upper part of the second coupling 15 is placed in the docking sleeve 4, and the docking sleeve 4 is placed in the vertical through hole of the connecting seat 3.

[0026] Preferably, in order to adjust the rotational driving speed and increase the control reliability, a speed reducer 8 and a clutch 9 are provided in the motor box 2. The rotating shaft of the driving motor 7 is connected to the input end of the speed reducer 8, the output end of the speed reducer 8 is connected to the input end of the clutch 9, and the output end of the clutch 9 is connected to the first coupling 14.

[0027] As Figures 1 - 3As shown in the figure, during operation, after the driving motor 7 is started, its rotating shaft drives the first coupling 14 to rotate through speed reduction by the speed reducer 8 and connection with the clutch 9. The first coupling 14 drives the second coupling 15, the transmission shaft 18, and the first driving bevel gear 12 to rotate. The first driving bevel gear 12 drives the second driving bevel gear 13 to rotate and changes the rotation direction. The second driving bevel gear 13 drives other components to rotate or cooperate with other components to achieve the linear displacement function.

[0028] When it is necessary to replace the driving motor 7 and other components inside the motor box 2, the outdoor operator connects a remote operation tool such as a lifting tool or a manipulator to the docking hook on the motor box 2, and then directly lifts it up. On the one hand, it overcomes the permanent magnetic attraction of the permanent magnet 10 to the metal pin 5. On the other hand, there is no axial positioning connection between the first coupling 14 and the second coupling 15, so they can be directly separated. Therefore, the motor box 2 can be smoothly lifted and moved outdoors to complete the disassembly; after repairing or replacing the driving motor 7 and / or the speed reducer 8 and the clutch 9 inside the motor box 2 outdoors and installing them, then connect a remote operation tool such as a lifting tool or a manipulator to the docking hook on the motor box 2, and then move it above the gear box 6, and then move the motor box 2 downward. When the lower end of the first coupling 14 starts to contact the upper end of the second coupling 15, it is very likely that the tooth tip and tooth groove cannot be matched. At this time, continue to move the motor box 2 downward. The first coupling 14 pushes the second coupling 15 downward and compresses the spring 17. At the same time, multiple metal pins 5 respectively enter multiple connection holes 11 until the upper ends of multiple metal pins 5 respectively contact the lower ends of multiple permanent magnets 10. At this time, the motor box 2 is docked with the gear box 6 in place, and the motor box 2 is released to complete the assembly; during subsequent use, after the driving motor 7 is started, as the first coupling 14 rotates, under the elastic force of the spring 17, the second coupling 15 can adaptively achieve the tooth tip and tooth groove matching with the first coupling 14, so as to automatically complete the tooth meshing transmission function.

[0029] The above embodiments are only the preferred embodiments of the present invention, and do not limit the technical solutions of the present invention. As long as the technical solutions that can be achieved on the basis of the above embodiments without creative labor shall be regarded as falling within the scope of the patent rights of the present invention.

Claims

1. A rotary drive connection device facilitating remote replacement operation, comprising a motor box and a gear box. A drive motor and a first coupling are installed in the motor box. The first coupling is connected to the rotating shaft of the drive motor. A second coupling and a drive gear are installed in the gear box. The second coupling and the drive gear are connected. The first coupling and the second coupling are connected by gear meshing transmission. It is characterized in that: The second coupling is connected to the driving gear through a transmission shaft that can freely rotate around its own central axis. The second coupling and the transmission shaft are sleeved with each other, and the second coupling can move axially on the transmission shaft but cannot rotate relative to the transmission shaft. A spring is sleeved outside the transmission shaft and abuts against the second coupling.

2. The rotary drive connection device facilitating remote replacement operation according to claim 1, wherein: The first coupling is located at the lower end of the motor box. A docking hook is provided at the upper end of the motor box. The second coupling is located at the upper end of the gear box. The lower end of the first coupling and the upper end of the second coupling are connected by meshing transmission. A blind hole is provided in the lower part of the second coupling, and the upper section of the transmission shaft is sleeved through the blind hole. A key connection for preventing relative rotation is provided between the hole wall of the blind hole and the outer wall of the upper section of the transmission shaft. The upper end of the spring abuts against the lower part or the middle part of the second coupling, and the lower end of the spring contacts the corresponding supporting part in the gear box. The middle section of the transmission shaft is installed in the gear box through a bearing.

3. The rotary drive connection device facilitating long-distance replacement operation according to claim 2, wherein: The driving gear includes a first driving bevel gear and a second driving bevel gear. The lower end of the transmission shaft is placed in the central through hole of the first driving bevel gear and is fixedly connected. The first driving bevel gear and the second driving bevel gear are meshed and connected.

4. The rotary drive connection device facilitating remote replacement operation according to claim 2 or 3, characterized in that: A connecting seat is connected to the lower end of the motor box. A vertical through hole is provided in the middle of the connecting seat, and the lower part of the first coupling is placed in the vertical through hole. A plurality of permanent magnets are installed at the upper position near the periphery in the connecting seat. Connecting holes with open lower ends are respectively provided at the positions below the plurality of permanent magnets in the connecting seat. Metal pins or metal bolts are respectively installed at the positions corresponding to the plurality of connecting holes at the upper end of the gear box. The upper ends of the plurality of metal pins or metal bolts are respectively placed in the plurality of connecting holes. A docking sleeve that protrudes upward and has an open upper end is provided in the middle of the upper end of the gear box. The upper part of the second coupling is placed in the docking sleeve. The docking sleeve is placed in the vertical through hole of the connecting seat.

5. The rotary drive connection device facilitating long-distance replacement operation according to any one of claims 1-3, characterized in that: A speed reducer and a clutch are provided in the motor box. The rotating shaft of the driving motor is connected to the input end of the speed reducer. The output end of the speed reducer is connected to the input end of the clutch. The output end of the clutch is connected to the first coupling.

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