Chain drive device and shuttle vehicle

Abstract

The present invention discloses a chain drive device, wherein a first chain segment and a second chain segment are connected by a slot of a connecting piece, and the connecting segment of the two chains is passed through to form a transmission direction of the upper portion of the first chain segment (in contact with the driving shaft) to the lower portion of the second chain segment (in contact with the driven shaft), so that the rotation direction of the driven shaft is opposite to that of the driving shaft. In this way, the simultaneous reverse movement of the two shafts can be achieved only by connecting the chain between the driving shaft and the driven shaft, which can simplify the overall structure. The present invention also discloses a shuttle vehicle having the chain drive device, and the chain drive device is used to drive the lifting and lowering of the lifting frame in the shuttle vehicle.

Description

Technical Field

[0001] The chain driving device of the present invention belongs to the technical field of chain transmission.

[0002] The shuttle vehicle of the present invention belongs to the technical field of storage systems, in particular to a shuttle vehicle running on a storage track. Background Art

[0003] Most of the existing chain transmission structures use gears and chains in combination, and the chain is driven by the rotation of the driving shaft, and the chain drives the driven shaft to rotate at the same time, thereby providing power to the driven shaft. The existing chain transmission structure can only drive the driving shaft and the driven shaft in the same direction, that is, the rotation direction of the driving shaft drives the driven shaft to rotate in the same direction. In some application structures, if the driving shaft and the driven shaft need to rotate in opposite directions, this type of chain transmission cannot be used. The only way is to extend a reversing structure through the motor, drive the driven shaft to rotate through another chain, or set the two shafts independently, and control the rotation of the two shafts through two motors respectively, so that the two shafts can rotate at the same time and in opposite directions. This will complicate the structure, not only occupying the internal space of the mechanical product, but also increasing the production cost.

[0004] Therefore, a new technical solution is needed to solve the above problems. Summary of the invention

[0005] Purpose of the invention: The present invention provides a chain drive device, which can rotate the driving shaft and the driven shaft in opposite directions at the same time through a chain between the driving shaft and the driven shaft.

[0006] The present invention also provides a shuttle vehicle, in which a chain driving device is applied to a lifting frame.

[0007] Technical solution: To achieve the above purpose, the present invention can adopt the following technical solution:

[0008] A chain drive device comprises a driving shaft and a driven shaft arranged parallel to the driving shaft; the driving shaft is provided with a driving gear, and the driven shaft is provided with a driven gear; a first section of chain is wound around the driving gear, and a second section of chain is wound around the driven gear, the two ends of the first section of chain are a first upper end extending from above the driving gear and a first lower end extending from below the driving gear; the two ends of the second section of chain are a second upper end extending from above the driven gear and a second lower end extending from below the driven gear; a connecting piece is connected between the first upper end and the second lower end, the connecting piece is provided with a hollow slot, and the first lower end and the second upper end are connected through the slot.

[0009] Beneficial effect: Compared with the prior art, the first and second chain segments of the chain system in the present technical solution are connected by slots in the connecting piece, and the connecting segments of the two chains are passed through to form the transmission direction of the upper part of the first chain segment (in contact with the driving shaft) to the lower part of the second chain segment (in contact with the driven shaft), so that the rotation direction of the driven shaft is opposite to that of the driving shaft. In this way, the simultaneous reverse movement of the two shafts can be achieved only by connecting the chain between the driving shaft and the driven shaft, and there is no need to set other redundant reversing structures outside the space between the driving shaft and the driven shaft or use more than two motors as the driving device. Thereby, the overall structure can be simplified.

[0010] Furthermore, a connecting rod is connected between the first lower end and the second upper end, and the connecting rod passes through the slot.

[0011] Furthermore, the power output shaft is provided with an output gear, the driving shaft is provided with an input gear matched with the output gear, and the output gear and the input gear are driven by a chain.

[0012] Furthermore, the power output shaft is connected to a motor system, which includes a drive motor and a reducer, and the power output shaft is an output shaft of the reducer.

[0013] Furthermore, the first lower end is directly connected to the second upper end through the slot.

[0014] The shuttle provided by the present invention adopts the following technical solutions:

[0015] A shuttle vehicle with the chain drive device comprises a vehicle body, a lifting frame, and wheels located outside the vehicle body; vertical guide columns are provided on both sides of the upper side of the vehicle body, and guide sliders cooperating with the guide columns are provided on the sides of the lifting frame, and the lifting frame moves up and down along the guide columns along with the guide sliders; a hollow receiving cavity is provided below the lifting frame, and the two sides of the receiving cavity are two side walls of the lifting frame, and the chain drive device is installed on the upper surface of the vehicle body and is located in the receiving cavity; both ends of the driving shaft are provided with a first connecting rod device, and one end of the first connecting rod device is fixedly connected to the driving shaft, and a first guide block is provided on the outer side of the other end of the first connecting rod device; both ends of the driven shaft are provided with a second connecting rod device The cam is configured to move the first and second guide blocks together with the first and second guide blocks, and the cam is configured to move the first and second guide blocks together.

[0016] Beneficial effect: The shuttle vehicle of the present technical solution will be able to realize the chain drive device with two axes rotating in opposite directions at the same time, which is applied to the lifting and lowering of the lifting frame. The lifting frame is driven to rise or fall by the connecting rod devices of the active shaft and the driven shaft respectively. Since the active shaft and the driven shaft can move in opposite directions at the same time, the lateral components of force given to the lifting frame by the first guide block driven by the active shaft and the second guide block driven by the driven shaft are also opposite and can offset each other. In this way, the overall lateral component of force of the lifting frame by the first guide block and the second guide block will not be transmitted to the guide columns of the vehicle body. The lifting frame can rise or fall smoothly relative to the guide columns without being affected by the mutual friction of lateral extrusion, so that the lifting frame can move stably and smoothly, and at the same time avoid the hidden danger of lateral deformation of the guide columns.

[0017] Furthermore, the first guide groove extends laterally, and when the first guide block rotates with the driving shaft, the first guide block moves back and forth laterally in the first guide groove; the second guide groove extends laterally relative to the first guide groove, and when the second guide block rotates with the driven shaft, the second guide block moves back and forth laterally in the second guide groove.

[0018] Furthermore, the first guide block includes a first cylindrical shaft fixed on the first connecting rod and a first block surrounding the first cylindrical shaft, the first cylindrical shaft and the first block are connected by a bearing, and the first block is arranged in the first guide groove; the second guide block includes a second cylindrical shaft fixed on the second connecting rod and a second block surrounding the second cylindrical shaft, the second cylindrical shaft and the second block are connected by a bearing, and the second block is arranged in the second guide groove.

[0019] Furthermore, the outer edge contours of the first block and the second block are both square, and the height of the first block is consistent with the height of the first guide groove, and the height of the second block is consistent with the height of the second guide groove.

[0020] Furthermore, the guide column and the guide slider are guided by the cooperation of a slide rail and a slide groove for accommodating the slide rail, and the slide rail and the slide groove are respectively arranged on the guide column and the guide slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the chain drive device in the present invention.

[0022] Figure 2 It is a side view of the chain drive device in the present invention.

[0023] Figure 3 It is a three-dimensional diagram of a chain system in a chain drive device.

[0024] Figure 4 It is a top view of the chain drive device in the present invention.

[0025] Figure 5 It is a top view of the chain drive device of the present invention after being installed on the shuttle body, and shows the schematic structure of the chain drive device located inside the lifting frame.

[0026] Figure 6 It is a side view of the shuttle vehicle after the lifting frame and the vehicle body are matched, and shows the state of the lifting frame when it is lowered to a lower position.

[0027] Figure 7 It is a side view of the shuttle car after the lifting frame and the car body are matched, and shows the state of the lifting frame when it rises to a higher position. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] Please combine Figures 1 to 4As shown, this embodiment discloses a chain drive device, which enables the two shafts in the device to rotate in opposite directions at the same time. In this embodiment, the two shafts are a driving shaft 100 and a driven shaft 200 arranged parallel to the driving shaft 100. The power of the driving shaft 100 is realized by the power output shaft 400 of the motor system. The power output shaft 400 is provided with an output gear 410, and the driving shaft 100 is provided with an input gear 110 that cooperates with the output gear 410. The output gear 410 and the input gear 110 are driven by a chain 420. The power output shaft 400 is connected to the motor system, and the motor system includes a driving motor 430 and a reducer 440, and the power output shaft 400 is the output shaft of the reducer 440.

[0030] A driving gear 101 is provided on the driving shaft 100. A driven gear 201 is provided on the driven shaft 200. A first section of chain 310 is wound around the driving gear 101. A second section of chain 320 is wound around the driven gear 201, and the two ends of the first section of chain 310 are a first upper end 311 extending from above the driving gear 101 and a first lower end 312 extending from below the driving gear 101. The two ends of the second section of chain 320 are a second upper end 321 extending from above the driven gear 201 and a second lower end 322 extending from below the driven gear. A connecting member 330 is connected between the first upper end 311 and the second lower end 322, and the connecting member 330 is in the shape of an elongated strip and is provided with a hollow slot 331, and the first lower end 312 is connected to the second upper end 321 through the slot 331. That is, the slot 331 enables the entire chain system (including the first chain section 310, the second chain section 320, and the connector 330) to form an "∞"-shaped connection form, that is, the first lower end 312 and the second upper end 321 can be connected to cross the connector 330 and do not interfere with each other. Such an "∞"-shaped connection form can transmit the transmission direction of the upper part of the first chain section 310 (contacting the driving shaft 100) to the transmission direction of the lower part of the second chain section 320 (contacting the driven shaft 200), so that the rotation direction of the driven shaft 200 is opposite to that of the driving shaft 100. In this way, the simultaneous reverse movement of the two shafts can be achieved only by connecting the chain between the driving shaft 100 and the driven shaft 200, and there is no need to set other redundant reversing structures outside the space between the driving shaft 100 and the driven shaft 200 or use more than two motors as driving devices. Thereby, the overall structure can be simplified.

[0031] Although the first chain section 310 and the second chain section 320 can be directly connected as one body, in order to facilitate the assembly between the first chain section 310 and the second chain section 320, in this embodiment, a connecting rod 340 is additionally connected between the first lower end 312 and the second upper end 321, and the connecting rod 340 passes through the slot 331. Since the connecting member 330 in this embodiment is a rigid structure and does not have the flexibility of the chain, the driving shaft 100 and the driven shaft 200 cannot rotate continuously. After interfering with the connecting member 330, the driving shaft and the driven shaft can no longer continue to rotate. Therefore, the rotation angle of the driving shaft 100 and the driven shaft 200 is related to the length of the entire chain system. The longer the length of the first chain section 310 and the second chain section 320 in the chain system is, the larger the rotation angle of the driving shaft 100 and the driven shaft 200 is. The chain drive device provided in this embodiment can make the driving shaft 100 and the driven shaft 200 rotate forward or reverse 180 degrees, which belongs to a chain drive with a small stroke.

[0032] Embodiment 2

[0033] Please combine Figures 5 to 7As shown, the second embodiment provides a shuttle car with the chain drive device of the first embodiment, which is applied to the shelf in the storage logistics system and can move on the track of the shelf. The chain drive device is used to drive the lifting frame in the shuttle car to rise or fall, and the lifting frame is used to carry goods. The shuttle car includes a car body 500, a lifting frame 510, and wheels located outside the car body. Vertical guide columns 530 are provided on both sides of the upper part of the car body 500, and guide sliders 511 cooperating with the guide columns 530 are provided on the side of the lifting frame 510. The lifting frame 510 moves up and down along the guide columns 530 with the guide sliders 511. The guide columns 530 and the guide sliders 511 are guided by the slide rails (unnumbered) and the slide grooves (unnumbered) that receive the slide rails, and the slide rails and the slide grooves are respectively arranged on the guide columns 530 and the guide sliders 511. That is, a slide rail can be provided on the guide column 530, and a slide groove can be provided on the guide slider 511, or a slide groove can be provided on the guide column 530, and a slide rail can be provided on the guide slider 511. A hollow receiving chamber (not shown) is provided below the lifting frame 510, and the two sides of the receiving chamber are two side walls 512 of the lifting frame. The chain drive device is mounted on the upper surface of the vehicle body 500 and is located in the receiving chamber. A first connecting rod device 102 is provided at both ends of the driving shaft 100, and one end of the first connecting rod device 102 is fixedly connected to the driving shaft 100, and a first guide block 103 is provided on the outer side of the other end of the first connecting rod device 102. A second connecting rod device 202 is provided at both ends of the driven shaft 200, and one end of the second connecting rod device 202 is fixedly connected to the driven shaft 200, and a second guide block 203 is provided on the outer side of the other end of the second connecting rod device 202. The first connecting rod device 102 and the second connecting rod device 202 can be rod-shaped or can be a disc installed on the driving shaft or the driven shaft through an axle pin, as long as they can play the role of a "connecting rod" between the shaft and the guide block. The two side walls 512 of the lifting frame 510 are provided with a first guide groove 513 matched with the first guide block 103 and a second guide groove 514 matched with the second guide block 203. The first guide block 103 includes a first cylindrical shaft body 105 fixed on the first connecting rod device 102 and a first block body 106 surrounding the first cylindrical shaft body 105. The first cylindrical shaft body 105 and the first block body 106 are connected by a bearing. The first block body 106 is arranged in the first guide groove 513. The second guide block 203 includes a second cylindrical shaft body 205 fixed on the second connecting rod device 202 and a second block body 206 surrounding the second cylindrical shaft body 205. The second cylindrical shaft body 205 and the second block body 206 are connected by a bearing. The second block 206 is disposed in the second guide groove 514. The outer edges of the first block 106 and the second block 206 are both square. The height of the first block 106 is consistent with the height of the first guide groove 513, and the height of the second block 206 is consistent with the height of the second guide groove 514.The first guide block 103 and the second guide block 203 move together under the drive of the driving shaft 100 and the driven shaft 200. The first guide block 103 and the second guide block 203 rotate in opposite directions when they move together. Figure 6 As shown, when the first guide block 103 and the second guide block 203 rotate together to the first position (i.e., the lower position), the lifting frame 510 moves downward to a position close to the vehicle body 500, that is, when used on a storage shelf, the goods on the lifting frame 510 can be moved downward. Figure 7 As shown, when the first guide block 103 and the second guide block 203 rotate together to a second position higher than the first position, the lifting frame 510 moves upward to a position away from the vehicle body 500, that is, it can be used to lift the goods upward.

[0034] Since the movement of the first guide block 103 and the second guide block 203 from top to bottom or from bottom to top is an arc-shaped trajectory, the first guide groove 513 and the second guide groove 514 need to provide space for the first guide block 103 and the second guide block 203 to move in the horizontal direction. That is, the first guide groove 513 extends horizontally, and when the first guide block 103 rotates with the driving shaft 100, the first guide block 103 moves back and forth horizontally in the first guide groove 513; the second guide groove 514 extends horizontally relative to the first guide groove 513, and when the second guide block 103 rotates with the driven shaft 200, the second guide block 203 moves back and forth horizontally in the second guide groove 514. Since it is necessary to keep the heights of the two ends of the top surface of the lifting frame 510 consistent, the heights of the first guide block 103 and the second guide block 203 when moving also need to be consistent, and the size of the overall structure can be adjusted.

[0035] Due to the adoption of the chain drive device of the first embodiment, the shuttle vehicle can realize the simultaneous rotation of the two shafts in opposite directions to drive the lifting frame 510 to rise or fall, and the lifting frame 510 can be driven to rise or fall through the connecting rod devices of the driving shaft 100 and the driven shaft 200. The lateral force components given to the lifting frame 510 by the first guide block 103 driven by the driving shaft and the second guide block 203 driven by the driven shaft are also opposite and can offset each other, so that the overall lateral force components of the first guide block 103 and the second guide block 203 on the lifting frame 510 will not be transmitted to the guide column 530 of the vehicle body, and the lifting frame 510 can rise or fall smoothly relative to the guide column without being affected by the mutual friction of lateral extrusion.

[0036] There are many methods and approaches to implement the technical solution of the present invention, and the above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A shuttle vehicle with a chain drive device, the chain drive device comprising a driving shaft and a driven shaft arranged parallel to the driving shaft; the driving shaft is provided with a driving gear, and the driven shaft is provided with a driven gear; characterized in that: A first section of chain is wound around the driving gear, and a second section of chain is wound around the driven gear. The two ends of the first section of chain are a first upper end extending from above the driving gear and a first lower end extending from below the driving gear; the two ends of the second section of chain are a second upper end extending from above the driven gear and a second lower end extending from below the driven gear; a connecting piece is connected between the first upper end and the second lower end, and the connecting piece is provided with a hollow slot, and the first lower end and the second upper end are connected through the slot; The shuttle car also includes a car body, a lifting frame, and wheels located on the outside of the car body; vertical guide columns are provided on both sides of the upper part of the car body, and guide sliders cooperating with the guide columns are provided on the sides of the lifting frame, and the lifting frame moves up and down along the guide columns along with the guide sliders; it is characterized in that a hollow receiving chamber is provided at the bottom of the lifting frame, and the two sides of the receiving chamber are two side walls of the lifting frame, and the chain drive device is installed on the upper surface of the car body and is located in the receiving chamber; both ends of the driving shaft are provided with a first connecting rod device, and one end of the first connecting rod device is fixedly connected to the driving shaft, and a first guide block is provided on the outside of the other end of the first connecting rod device; both ends of the driven shaft are provided with a second connecting rod device, and One end of the second connecting rod device is fixedly connected to the driven shaft, and a second guide block is provided on the outer side of the other end of the second connecting rod device; two side walls of the lifting frame are provided with a first guide groove matched with the first guide block, and a second guide groove matched with the second guide block; the first guide block and the second guide block move together under the drive of the driving shaft and the driven shaft, and the rotation directions of the first guide block and the second guide block when they move together are opposite, when the first guide block and the second guide block rotate together to the first position, the lifting frame moves downward to a position close to the vehicle body, and when the first guide block and the second guide block rotate together to a second position higher than the first position, the lifting frame moves upward to a position away from the vehicle body; The first guide block includes a first cylindrical shaft fixed on the first connecting rod device and a first block surrounding the first cylindrical shaft, the first cylindrical shaft and the first block are connected by a bearing, and the first block is arranged in the first guide groove; the second guide block includes a second cylindrical shaft fixed on the second connecting rod device and a second block surrounding the second cylindrical shaft, the second cylindrical shaft and the second block are connected by a bearing, and the second block is arranged in the second guide groove; the outer edge contours of the first block and the second block are both square, and the height of the first block is consistent with the height of the first guide groove, and the height of the second block is consistent with the height of the second guide groove.

2. The shuttle vehicle according to claim 1, characterized in that: A connecting rod is connected between the first lower end and the second upper end, and the connecting rod passes through the slot.

3. The shuttle vehicle according to claim 1 or 2, characterized in that: The power output shaft is provided with an output gear, the driving shaft is provided with an input gear matched with the output gear, and the output gear and the input gear are driven by a chain.

4. The shuttle vehicle according to claim 3, characterized in that: The power output shaft is connected to a motor system, which includes a drive motor and a reducer, and the power output shaft is the output shaft of the reducer.

5. The shuttle vehicle according to claim 1, characterized in that: The first lower end is directly connected to the second upper end through the slot.

6. The shuttle vehicle according to claim 1, characterized in that: The first guide groove extends laterally, and when the first guide block rotates with the driving shaft, the first guide block moves back and forth laterally in the first guide groove; the second guide groove extends laterally relative to the first guide groove, and when the second guide block rotates with the driven shaft, the second guide block moves back and forth laterally in the second guide groove.

7. The shuttle vehicle according to claim 1, characterized in that: The guide column and the guide slide block are guided by the slide rail and the slide groove for receiving the slide rail. The slide rail and the slide groove are respectively arranged on the guide column and the guide slide block.

Images