Split type driving mechanism of rotating shaft and split type driving system of moving turntable

Abstract

The application relates to a split driving mechanism of a rotating shaft, comprising a transmission connecting rod, the transmission connecting rod adopting a split structure with the rotating shaft, a driving motor being arranged at the first end of the transmission connecting rod, a coaxial butt joint structure being arranged between the tail end of the transmission connecting rod and the outer end of the rotating shaft, the transmission connecting rod comprising at least a first connecting rod section and a second connecting rod section, the first connecting rod section being tubular and coaxially sleeving the second connecting rod section, the two being axially slidingly matched and being provided with matched circumferential positioning structures, and the transmission connecting rod being provided with a driving device for driving the tail end of the transmission connecting rod to butt joint or separate from the outer end of the rotating shaft. The application also relates to a split driving system of a mobile rotating table adopting the split driving mechanism of the rotating shaft. Compared with the traditional mode of directly driving the rotating shaft by the motor, the working environment of the rotating shaft does not need electricity and allows the rotating shaft and the device to move, and is especially suitable for working environments avoiding electric leakage and continuous production conditions.

Description

Technical Field

[0001] This invention relates to a split-type drive mechanism for a rotating shaft and a split-type drive system for a movable turntable, belonging to the field of mechanical transmission technology. Background Technology

[0002] Devices driven by rotating shafts (such as turntables or rotary tables) typically use direct-drive motors. Direct-drive motors require wiring within the device's operating environment. In certain special working environments or conditions, direct-drive motors and wiring can easily create safety hazards and / or result in cumbersome wiring. For example, in environments with explosive gases or dust, direct-drive motors and wiring can easily cause an explosion if a spark is generated due to a leakage current. Similarly, in water spray environments, direct-drive motors and wiring are prone to leakage current. Furthermore, when the device needs to be moved, the length of the wiring must meet the device's displacement requirements, resulting in cumbersome wiring, easy tangling, and significant safety hazards. Summary of the Invention

[0003] To overcome the above-mentioned defects of the prior art, the present invention provides a split drive mechanism for the rotating shaft and a split drive system for the moving turntable, which can effectively avoid safety hazards caused by electricity use in special working environments or conditions.

[0004] The technical solution of the present invention to achieve the above-mentioned objective is as follows: a split-type drive mechanism for a rotating shaft, including a transmission link, wherein the transmission link and the rotating shaft are of a split structure, the first end (or power input end) of the transmission link is provided with a motor for driving its rotation, and the end end (or power output end) of the transmission link is provided with a coaxial docking structure that cooperates with the outer end of the rotating shaft. The transmission link includes at least a first link segment and a second link segment, the first link segment is tubular and coaxially fitted on the second link segment, the two are axially slidingly engaged and provided with a cooperating circumferential positioning structure, and the transmission link is provided with a drive device for driving its end to dock or separate from the outer end of the rotating shaft.

[0005] Typically, the first end of the transmission link is coaxially and fixedly connected to the end of the motor shaft of the motor.

[0006] Preferably, the first end of the second link segment is inserted into the first link segment from the end of the first link segment to achieve the sleeve assembly of the two.

[0007] Preferably, the transmission link is composed of a first link segment and a second link segment, without other links. In this case, the transmission link can be coaxial with the rotating shaft, with the first end of the first link segment being the first end of the transmission link and the end of the second link segment being the end of the transmission link.

[0008] Preferably, the transmission link further includes a third link segment and a fourth link segment. The first end of the third link segment is the first end of the transmission link, and the end of the fourth link segment is the end of the transmission link. The first link segment and the second link segment constitute the telescopic section of the transmission link. The end of the third link segment and the first end of the telescopic section, as well as the end of the telescopic section and the first end of the fourth link segment, are connected by universal couplings. The fourth link segment is coaxial with the rotating shaft.

[0009] Preferably, the coaxial docking structure includes a pin at the end of the transmission link and a bushing coaxially fixedly mounted on the rotating shaft. The pin extends radially outward along the transmission link. The outer end of the rotating shaft is located inside the bushing and there is a gap between it and the outer end of the bushing. The inner diameter of the outer end of the bushing matches the outer diameter of the end of the transmission link. The outer end of the bushing is provided with a slot suitable for the pin to be inserted. The slot is a through groove that penetrates the bushing wall both inside and out.

[0010] Preferably, the depth of the slot is greater than the distance between the pin and the end of the transmission link.

[0011] Preferably, the end of the transmission link is provided with a radial through hole, the diameter of the through hole is matched with the outer diameter of the pin, the pin is fixedly inserted in the through hole, the length of the pin is greater than the length of the through hole, and its two ends extend outward from the through hole respectively. Alternatively, the end of the transmission link is provided with two pins that are symmetrical about the end axis of the transmission link and extend radially outward. Correspondingly, the number of slots is two, and the two slots are symmetrically arranged about the axis of the bushing.

[0012] Preferably, the circumferential positioning structure includes a key located on the outer wall of the second connecting rod segment and a keyway located on the inner wall of the first connecting rod segment, wherein the key is located within the keyway and has a sliding clearance between it and the wall of the keyway.

[0013] Preferably, both the key and the keyway are elongated and extend axially. Their length and installation area should meet the extension and retraction requirements of the transmission link while ensuring torque transmission. A common approach is that the length of the first link segment is the same as the length of the second link segment, the key is parallel to the axis of the second link segment, and the keyway is an axial through groove parallel to the axis of the first link segment.

[0014] Furthermore, the key is a spline.

[0015] Preferably, the driving device includes a cylinder mounted on a bracket, the piston rod of the cylinder extending in the same direction as the axis of the rotating shaft, and the end of the transmission connecting rod connected to the piston rod of the cylinder through a cooperating bearing and bearing seat, the bearing being coaxial with the rotating shaft.

[0016] Preferably, the cylinder is a linear cylinder.

[0017] When the end of the transmission link is connected to or separated from the outer end of the rotating shaft, the moving distance (displacement) of the end of the transmission link can be controlled by the preset stroke or maximum stroke of the piston rod of the cylinder (i.e., the preset stroke or maximum stroke of the piston reciprocating in the cylinder).

[0018] Preferably, the driving device further includes a sliding plate located on the top surface of the cylinder, with a matching slider and a sliding groove between them. The sliding groove extends in the same direction as the piston rod of the cylinder. The sliding plate is connected to the end of the piston rod of the cylinder via a connector, and the bearing seat is fixedly mounted on the sliding plate.

[0019] Preferably, one of the sliding plate and the cylinder is provided with a stop block, and the other is provided with a contact switch. The stop block and the contact switch are positioned corresponding to each other along the axial direction of the piston rod of the cylinder, and the signal output of the contact switch is connected to the control terminal of the motor.

[0020] Preferably, when the end of the transmission link is in the original position and the outer end of the rotating shaft is in the docking position (i.e., when the end of the transmission link and the outer end of the rotating shaft are coaxial and the two are in the separation state with the largest distance), the distance between the contact switch and the stop block is the same as the moving distance required for the end of the transmission link to dock with the bushing in this position.

[0021] The rotating shaft driven device may be equipped with a conveying device, the conveying direction of which is perpendicular to the axis of the end of the transmission link.

[0022] A split-type drive system for a mobile turntable includes a horizontal turntable, the turntable being equipped with a conveying device, the turntable's rotating shaft being connected to a horizontal rotating shaft via a transmission mechanism, the rotating shaft being driven by any of the split-type drive mechanisms of the rotating shaft described in this invention, a proximity switch being provided on the end of the transmission link or on the drive device (on the end face facing the same direction as the end face of the transmission link), the signal output of the proximity switch being connected to the control terminal of the conveying device.

[0023] Preferably, the conveying direction of the conveying device is perpendicular to the axis of the end of the transmission link.

[0024] Preferably, the conveying device is a chain conveyor belt.

[0025] The beneficial effects of this invention are as follows: This invention uses a transmission linkage to drive the rotating shaft. Compared to the traditional direct-drive method using a motor, no electricity is required in the working environment where the rotating shaft is located. The drive motor of the transmission linkage can be placed outside the working environment where the rotating shaft is located, effectively avoiding leakage current and safety hazards caused by leakage current. This is especially suitable for working environments with explosive gases, dust, or water spray. The transmission linkage and rotating shaft of this invention adopt a separate structure. Compared to the traditional direct-drive method using a motor, this allows the rotating shaft and its driving device to move relative to the transmission linkage (for example, the rotating shaft and its driving device can move in a direction perpendicular to the end axis of the transmission linkage). This allows one transmission linkage to sequentially drive multiple rotating shafts and their driving devices according to production needs, achieving continuous production operation. Furthermore, there is no need to lay wires in the working environment of the rotating shaft and its driving device, and there is no need to consider wiring problems caused by the movement of the rotating shaft and its driving device, effectively reducing safety hazards and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of one embodiment of the split-type drive mechanism of the rotating shaft of the present invention (the end of the transmission link is separated from the outer end of the rotating shaft). Figure 2 This is a schematic diagram of another embodiment of the split drive mechanism of the rotating shaft of the present invention (the end of the transmission link is separated from the outer end of the rotating shaft). Figure 3 This is a schematic diagram of one embodiment of the split drive system of the mobile turntable of the present invention (the end of the transmission link and the outer end of the rotating shaft are in a coaxial docking state). Detailed Implementation

[0027] See Figure 1 and Figure 2This invention discloses a split-type drive mechanism for a rotating shaft, including a transmission link. The transmission link and the rotating shaft (usually referring to the rotating shaft of a device driven by the rotating shaft) 1 are of a split structure. The first end (or power input end) of the transmission link is provided with a motor 2 to drive its rotation, which provides power for the rotation of the transmission link. Typically, the first end of the transmission link is coaxially fixedly connected to the end of the motor shaft of the motor, for example, directly connected or connected through a coupling. The end end (or power output end) of the transmission link is provided with a coaxial docking structure with the outer end of the rotating shaft (the inner end of the rotating shaft is connected to the moving part of the device). When the end end of the transmission link is coaxially docked with the outer end of the rotating shaft, the motor can drive the rotating shaft to rotate through the transmission link. The transmission link includes at least a first link segment 3 and a second link segment 4. The first link segment is tubular (or at least one end is tubular) and coaxially fitted onto the second link segment. The first end of the second link segment can be inserted into the first link segment from the end of the first link segment to achieve a sleeve assembly. The first link segment and the second link segment are axially slidingly fitted and have a corresponding circumferential positioning structure (or circumferential positioning structure). This satisfies the extension and retraction requirements of the transmission link when the end of the transmission link is coaxially connected with the outer end of the rotating shaft. The transmission link is provided with a drive device for driving its end to engage or disengage with the outer end of the rotating shaft, providing power for the engagement or disengagement of the end of the transmission link with the outer end of the rotating shaft.

[0028] For ease of assembly, the motor can be fixedly mounted on the support frame or the frame of the device driven by the rotating shaft. If necessary, the support frame or frame can be provided with through holes for the transmission link or motor shaft to pass through.

[0029] A preferred embodiment of the transmission link is as follows: the transmission link consists of a first link segment and a second link segment, that is, the transmission link only includes the first link segment and the second link segment. In this case, the first end of the first link segment is the first end of the transmission link, which is connected to the motor shaft of the motor, and the end of the second link segment is the end of the transmission link. A coaxial docking structure is provided between the second link segment and the outer end of the rotating shaft for coaxial docking with the outer end of the rotating shaft. The transmission link is coaxial with the rotating shaft. This embodiment is suitable for working conditions where the working environment allows the motor shaft of the motor to be arranged coaxially with the rotating shaft.

[0030] Another preferred embodiment of the transmission link is as follows: in addition to the first link segment and the second link segment, the transmission link also includes a third link segment 5 and a fourth link segment 6. The first end of the third link segment is the first end of the transmission link and is connected to the motor shaft of the motor. The end of the fourth link segment is the end of the transmission link and is provided with a coaxial docking structure to cooperate with the outer end of the rotating shaft for coaxial docking with the outer end of the rotating shaft. The first link segment and the second link segment constitute the telescopic segment of the transmission link. The end of the third link segment and the first end of the telescopic segment (e.g., the first end of the first link segment) and the end of the telescopic segment (e.g., the end of the second link segment) and the first end of the fourth link segment are connected by universal couplings 7. The fourth link segment is coaxial with the rotating shaft. This implementation method is suitable for working environments with complex conditions where the motor shaft and the rotating shaft of the motor cannot be arranged coaxially. The universal coupling can reliably transmit torque and motion even when the connecting rod sections at both ends are not on the same axis.

[0031] The coaxial docking structure preferably includes a pin 8 located at the end of the transmission connecting rod and a bushing 9 coaxially fixedly fitted on the rotating shaft (the bushing and the rotating shaft can be fixed by a pin). The pin extends radially outward along the transmission connecting rod. The outer end of the rotating shaft is located inside the bushing and there is a gap between it and the outer end of the bushing. The inner diameter of the outer end side of the bushing matches the outer diameter of the end of the transmission connecting rod, so that when the end of the transmission connecting rod docks with the bushing, the end of the transmission connecting rod can be coaxially inserted into the bushing. The outer end side of the bushing is provided with a slot suitable for the insertion of the pin. 10. The slot is a through groove that penetrates the inner and outer walls of the bushing. Its width matches the outer diameter of the pin (leaving an insertion gap), and it extends inward from the outer end of the bushing along the axial direction of the bushing. When the end of the transmission connecting rod is connected to the bushing, the circumferential position of the pin on the end of the transmission connecting rod corresponds to the circumferential position of the slot on the bushing. After the end of the transmission connecting rod is coaxially connected to the bushing, the pin can be inserted into the slot to achieve circumferential positioning of the end of the transmission connecting rod and the bushing, so that the transmission connecting rod can drive the bushing (and the transmission shaft) to rotate synchronously.

[0032] The depth of the slot is preferably greater than the distance between the pin and the end of the transmission link, so that when the end of the transmission link is coaxially inserted into the bushing, the pin can be inserted into the slot, ensuring the circumferential positioning between the end of the transmission link and the bushing.

[0033] A radial through hole can be provided at the end of the transmission connecting rod. The diameter of the through hole matches the outer diameter of the pin. The pin is fixedly inserted into the through hole (it can be fixed by a locating pin). The length of the pin is greater than the length of the through hole, and its two ends extend outward from the through hole. Alternatively, two pins can be provided at the end of the transmission connecting rod, symmetrical about the axis of the end of the transmission connecting rod and extending radially outward. Correspondingly, there are two slots, which are symmetrically arranged about the axis of the bushing. With this arrangement, when the end of the transmission connecting rod is connected to the bushing and drives the bushing to rotate, the circumferential force on the bushing is uniform, avoiding failures or damage caused by uneven force. Using multiple pins and matching slots is also applicable. When the same number of pins and slots are used, the multiple pins on the end of the transmission connecting rod and the multiple slots on the bushing are evenly distributed circumferentially.

[0034] The circumferential positioning structure preferably includes a key on the outer wall of the second connecting rod segment and a keyway on the inner wall of the first connecting rod segment. The key is located in the keyway and has a sliding gap between it and the wall of the keyway, so that the first connecting rod segment and the second connecting rod segment can slide relative to each other axially and can also be radially (or circumferentially) positioned by the matching key and keyway.

[0035] The length of the key is preferably the same as the length of the second connecting rod segment, and the key is parallel to the axis of the second connecting rod segment. Correspondingly, the keyway is an axial through groove, parallel to the axis of the first connecting rod segment, to meet the axial sliding requirements between the first connecting rod segment and the second connecting rod segment.

[0036] The key is preferably a spline, and correspondingly, the keyway is a matching spline groove, which can ensure that the circumferential force between the first connecting rod segment and the second connecting rod segment is uniform and the centering is good when the transmission connecting rod rotates, and can also improve the guiding performance and load-bearing capacity.

[0037] The driving device is preferably a cylinder 11, which can be mounted on a bracket or the frame of a rotating shaft driven device. If necessary, the bracket or frame can be provided with a through hole for the end side of the transmission connecting rod to pass through. The cylinder is preferably a linear cylinder, with its piston rod 12 extending in the same direction as the axis of the rotating shaft. The end side of the transmission connecting rod is connected to the piston rod of the cylinder through a matching bearing and bearing seat 13. Thus, the reciprocating motion of the piston rod of the cylinder can drive the end of the transmission connecting rod to engage or disengage with the bushing. The bearing is coaxial with the rotating shaft (the end side of the transmission connecting rod is coaxially assembled with the bearing) to ensure accurate coaxial engagement between the end of the transmission connecting rod and the bushing.

[0038] When the end of the transmission connecting rod is engaged or disengaged from the outer end of the rotating shaft (or the bushing if the bushing is provided), the moving distance (displacement) of the end of the transmission connecting rod can be controlled by the preset stroke or maximum stroke of the piston rod of the cylinder (i.e., the preset stroke or maximum stroke of the piston reciprocating in the cylinder), so that the moving distance of the end of the transmission connecting rod can ensure that it is inserted into the bushing without being excessive.

[0039] The driving device may further include a sliding plate 14, which is located on the top surface of the cylinder. A matching slider and a groove are provided between the sliding plate and the cylinder. The groove extends in the same direction as the piston rod of the cylinder, allowing the sliding plate to slide along the extension direction of the piston rod on the cylinder. The sliding plate is connected to the end of the piston rod of the cylinder via a connecting member (e.g., a connecting rod or a connecting plate). The bearing seat is fixedly mounted on the sliding plate. The sliding plate provides a stable mounting base for the bearing and bearing seat, enabling stable reciprocating motion along the extension direction of the piston rod under the drive of the cylinder's piston rod. In practical applications, other suitable bases or connecting plates can be added between the sliding plate and the bearing seat as needed.

[0040] A stop block can be installed on one of the sliding plate and the cylinder, and a contact switch can be installed on the other. The stop block and the contact switch are positioned axially along the piston rod of the cylinder, with the contact switch's contact facing the stop block. The signal output of the contact switch is connected to the control terminal of the motor. When the end of the transmission connecting rod is in its original position and the outer end of the rotating shaft is in the docking position (i.e., the end of the transmission connecting rod and the outer end of the rotating shaft are coaxial and in a state of maximum separation), the distance between the contact switch's contact and the stop block is the same as the moving distance required for the end of the transmission connecting rod to dock with the bushing in this position. This ensures that when the end of the transmission connecting rod docks with the bushing, the stop block contacts the contact switch's contact, controlling the motor to operate. Typically, the distance between the contact switch's contact and the stop block is greater than the distance between the pin and the outer end face of the bushing, and less than the distance between the pin and the bottom of the slot. For ease of assembly, the contact switch can be mounted on the sliding plate or the cylinder using a suitable connector.

[0041] The split-type drive mechanism of the rotating shaft is suitable for both situations where the position of the rotating shaft and its driving device is fixed and situations where the position of the rotating shaft and its driving device is movable. When the position of the rotating shaft and its driving device is fixed, the end of the transmission connecting rod is coaxial (preferably horizontally coaxial) with the outer end of the rotating shaft (when the bushing is provided). Depending on the work requirements, the piston rod of the cylinder moves the end of the transmission connecting rod to or from the outer end of the rotating shaft, thereby achieving transmission control of the rotating shaft. When the position of the rotating shaft and its driving device is movable, the rotating shaft and its driving device can be equipped with a conveying device. The axis of the end of the transmission connecting rod is in the same plane (preferably the same horizontal plane) and parallel to the axis of the rotating shaft. When the rotating shaft and its driving device move to the drive position, the end of the transmission connecting rod is coaxial with the outer end of the rotating shaft. Depending on the work requirements, the piston rod of the cylinder moves the end of the transmission connecting rod to or from the outer end of the rotating shaft, thereby achieving transmission control of the rotating shaft. The preferred direction of movement of the rotating shaft and its driving device (the conveying direction of the conveying device) is perpendicular to the axis of the rotating shaft, so that the distance between the end of the transmission link and the outer end of the rotating shaft is the same each time the rotating shaft and its driving device move to the work station to be driven. When the position of the rotating shaft and its driving device is movable, the number of rotating shafts and their driving devices can be one or more. When the number is one, it can be repeatedly moved to the work station to be driven according to work needs; when the number is multiple, it can be moved to the work station to be driven sequentially according to work needs.

[0042] When the position of the rotating shaft and its driving device is fixed, the circumferential position of the pin and the slot can be adjusted to align before the end of the transmission connecting rod is initially coaxially connected to the outer end of the rotating shaft. After the end of the transmission connecting rod is coaxially connected to the outer end of the rotating shaft and the working relative separation is completed, the circumferential position of the pin and the slot is still aligned. During the next coaxial connection, the end of the transmission connecting rod can be directly inserted into the bushing by controlling the cylinder, without needing to readjust the circumferential relative position of the pin and the slot again. Similarly, when the position of the rotating shaft and its driving device is movable and there is only one device, the circumferential position of the pin and the slot can be adjusted to align before the end of the transmission connecting rod is initially coaxially connected to the outer end of the rotating shaft. When the position of the rotating shaft and its driving device is movable and there are multiple shafts, the circumferential position of the pin and the slot on each rotating shaft can be adjusted to be aligned first. During the process of driving each rotating shaft to rotate through the transmission link, the working time of the motor and the number of rotations of the motor shaft are controlled to be the same. This ensures that after the end of the transmission link is coaxially connected with the outer end of each rotating shaft and the work is completed and relatively separated, the circumferential position of the slot on each rotating shaft is the same and corresponds to the circumferential position of the pin. In the subsequent process of connecting the end of the transmission link with the outer end of each transmission shaft, the end of the transmission link can be directly controlled by the cylinder to coaxially insert into the bushing, without the need to readjust the circumferential relative position of the pin and the slot on each rotating shaft.

[0043] See Figure 3 This invention also discloses a split-type drive system for a mobile turntable, including a horizontal turntable 15. The turntable is equipped with a conveying device. The rotating shaft 16 of the turntable is connected to a horizontal rotating shaft via a transmission mechanism (such as a gearbox or other mechanism or device suitable for directional rotation transmission). The rotating shaft is driven by any of the split-type drive mechanisms of the rotating shaft described in this invention. A proximity switch is provided on the end of the transmission link or on the end face of the drive device (facing the same direction as the end face of the transmission link). The signal output of the proximity switch is connected to the control terminal of the conveying device. When the conveying device conveys the turntable to the docking position of the rotating shaft (the position where the end of the transmission link is coaxially aligned with the outer end of the rotating shaft), the proximity switch is triggered to send a control signal, controlling the conveying device to stop running. Then, the cylinder controls the end of the transmission link to coaxially dock with the outer end of the rotating shaft, controlling the rotation of the turntable. The cylinder can also be controlled by the proximity switch, for example, by a delay control. After the transmission link drives the rotating shaft to rotate and complete the predetermined work, the cylinder can be controlled to separate the transmission link from the transmission shaft according to a suitable control method under the existing technology, and the transmission device can be started and operated, for example, the interlocking control between the motor, the cylinder and the transmission device.

[0044] The conveying direction of the conveying device is preferably perpendicular to the axis of the end of the transmission link, so that the distance between the outer end of the rotating shaft and the end of the transmission link is the same each time the rotating shaft and the turntable are conveyed to the docking station of the rotating shaft.

[0045] The conveying device is preferably a chain conveyor belt, which is convenient to assemble with the turntable. During assembly, the turntable can be rotatably mounted on the turntable base, and then the turntable base can be fixedly mounted on the chain of the chain conveyor belt.

[0046] The proximity switch can be a photoelectric proximity switch, an infrared proximity switch, or a magnetic proximity switch. Its installation method follows the existing technology for photoelectric switches, ensuring that a signal output is generated when the end of the transmission link is coaxially aligned with the outer end of the rotating shaft. The signal output of the proximity switch can be wirelessly transmitted to avoid the use of wires, thus adapting to special working environments that avoid electricity or sparks.

[0047] The number of turntables can be several, installed at intervals on the conveying device.

[0048] The split-type drive mechanism for the rotating shaft and the split-type drive system for the movable turntable of this invention use a transmission link to drive the rotating shaft, and the transmission link and the rotating shaft adopt a split structure. Compared with the traditional direct-drive method of motor, no electricity is required in the working environment where the rotating shaft is located, and the rotating shaft and its driving device are allowed to move relative to the transmission link. It is especially suitable for working environments where there are explosive gases, dust or water spray, etc., to avoid leakage, and for working conditions that require continuous production. For example, in the application of the cleaning process of the outer surface of parts, since the cleaning of the outer surface of the parts is in a water spray environment, it is necessary to avoid the use of electricity in the water spray environment as much as possible (to prevent leakage). The drive motor of the transmission link can be set outside the water spray environment (e.g., outside the cleaning chamber). The turntable (with the parts fixed on the turntable) is conveyed to the part cleaning station (or inside the cleaning chamber) by a conveying device. Then, the turntable is driven to rotate by the docking of the transmission link and the rotating shaft. Water or cleaning fluid is sprayed onto the parts using directional nozzles or small-angle rotating nozzles, thereby achieving all-round cleaning of the outer surface of the parts. For example, in applications in mines or flour production workshops, similar to applications in the cleaning process of the outer surface of parts, the drive motor of the transmission linkage can be located outside the environment where there are explosive gases or dust, and the corresponding device can be driven to work through the connection between the transmission linkage and the rotating shaft.

[0049] Any of the split-type drive mechanisms of the rotating shaft of the present invention can be used in any of the split-type drive systems of the mobile turntable of the present invention.

[0050] The split drive system of any of the mobile turntables of the present invention can also adopt the split drive mechanism of any of the rotating shafts of the present invention.

[0051] Unless otherwise specified or further limited to one preferred or optional technical means being another, the preferred and optional technical means disclosed in this invention can be arbitrarily combined to form several different technical solutions.

Claims

1. A split-type drive system for a mobile turntable, comprising a horizontal turntable, characterized in that... The turntable is equipped with a conveying device. The turntable's rotating shaft is connected to a horizontal rotating shaft via a transmission mechanism. The rotating shaft is driven by a split-type drive mechanism, which includes a transmission link. The transmission link and the rotating shaft are separate structures. The first end of the transmission link is equipped with a motor that drives its rotation. The last end of the transmission link and the outer end of the rotating shaft are provided with a coaxial docking structure. The transmission link includes at least a first link segment and a second link segment. The first link segment is tubular and coaxially fitted onto the second link segment. The two segments are axially slidingly engaged and have a cooperating circumferential positioning structure. The transmission link is equipped with a drive mechanism for its end segment. A drive device that connects or separates the end of the transmission link from the outer end of the rotating shaft. A proximity switch is provided at the end of the transmission link or on the drive device. The output of the proximity switch is connected to the control terminal of the transmission device. The transmission direction of the transmission device is perpendicular to the axis of the end of the transmission link. When the transmission device transmits the turntable to the docking position of the rotating shaft, the proximity switch is triggered to send a control signal to control the transmission device to stop running. The motor driving the transmission link is placed outside the working environment of the rotating shaft. When the end of the transmission link is coaxially docked with the outer end of the rotating shaft, the motor drives the rotating shaft to rotate through the transmission link.

2. The split-type drive system as described in claim 1, characterized in that... The transmission link consists of a first link segment and a second link segment, without other links. The first end of the first link segment is the first end of the transmission link, and the end of the second link segment is the end of the transmission link.

3. The split-type drive system as described in claim 1, characterized in that... The transmission link further includes a third link segment and a fourth link segment. The first end of the third link segment is the first end of the transmission link, and the end of the fourth link segment is the end of the transmission link. The first link segment and the second link segment constitute the telescopic section of the transmission link. The end of the third link segment and the first end of the telescopic section, as well as the end of the telescopic section and the first end of the fourth link segment, are connected by universal couplings. The fourth link segment is coaxial with the rotating shaft.

4. The split-type drive system as described in claim 1, characterized in that... The coaxial docking structure includes a pin at the end of the transmission link and a bushing coaxially fixed on the rotating shaft. The pin extends outward radially along the transmission link. The outer end of the rotating shaft is located inside the bushing and there is a gap between it and the outer end of the bushing. The inner diameter of the outer end of the bushing matches the outer diameter of the end of the transmission link. The outer end of the bushing is provided with a slot suitable for the pin to be inserted. The slot is a through groove that penetrates the bushing wall both inside and out.

5. The split-type drive system as described in claim 1, characterized in that... The circumferential positioning structure includes a key located on the outer wall of the second connecting rod segment and a keyway located on the inner wall of the first connecting rod segment. The key is located within the keyway, and an axial sliding clearance is provided between the two.

6. The split-type drive system as described in claim 5, characterized in that... The key is a spline.

7. The split-type drive system as described in claim 1, characterized in that... The driving device includes a cylinder mounted on a bracket. The piston rod of the cylinder extends in the same direction as the axis of the rotating shaft. The end of the transmission link is connected to the piston rod of the cylinder through a matching bearing and bearing seat. The bearing is coaxial with the rotating shaft.

8. The split-type drive system as described in claim 7, characterized in that... The driving device also includes a sliding plate located on the top surface of the cylinder. A matching slider and a sliding groove are provided between the two. The sliding groove extends in the same direction as the piston rod of the cylinder. The sliding plate is connected to the end of the piston rod of the cylinder through a connector. The bearing seat is fixedly mounted on the sliding plate.

9. The split-type drive system as described in claim 8, characterized in that... One of the sliding plate and the cylinder is provided with a stop block, and the other is provided with a contact switch. The stop block and the contact switch are positioned in the axial direction of the piston rod of the cylinder, and the output of the contact switch is connected to the control terminal of the motor.

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