A rotating child car for the production of logistics

Abstract

This invention discloses a rotary trolley for production material handling, comprising a main body; a traveling device and a rotating device for controlling the rotation of its upper structure around a rotation center; a support device including a bearing plate with support structures at both ends of the bearing plate, the support structures having a stowed state and an upright state, and a locking structure that locks the support plate in a vertical position when the support plate is perpendicular to the bearing plate; and a lifting device disposed between the rotating device and the support device for controlling the lifting and lowering movement of the support device between a low point and a high point. This invention's trolley can run on its parent car and on tracks on the ground, and the bearing plate can be directionally adjusted to accommodate the lifting of rolled materials placed in different orientations, making it convenient to use. The support plates at both ends of the bearing plate can be controlled to stand upright or lie flat under the control of the support structures, facilitating the lifting of rolled materials with or without a central sleeve.

Description

Technical Field

[0001] This invention relates to the field of production logistics transportation technology, specifically to a rotary cart for production logistics transfer. Background Technology

[0002] Production logistics refers to the process in which raw materials and purchased components are put into production, and then transported to various processing and storage points in the form of semi-finished products. They flow from one production unit (or warehouse) to another, are processed and stored according to the prescribed process, and are circulated within and out of a certain point with the help of certain transportation devices. It always reflects the process of material circulation in physical form.

[0003] In modern production logistics systems, traditional transportation equipment mainly includes trackless shuttles (AGVs) and rail shuttles (RGVs). Trackless shuttles are mainly used for transporting lighter goods in logistics, while rail shuttles are usually used for transporting heavier materials, but their transport is limited by their own tracks, which restricts the storage and retrieval of goods.

[0004] To address the shortcomings of traditional rail-guided shuttles, a mother-daughter shuttle system has been designed for storing and retrieving goods. The system, centered on the longitudinally moving daughter shuttle and the laterally moving mother shuttle, allows for more flexible goods storage and retrieval. The daughter shuttle's tracks are mounted on the mother shuttle, and an extension track connecting the mother shuttle's tracks is provided on one side of the mother shuttle's tracks.

[0005] For example, patent document 1, application number CN201220520945.2 discloses an automatic reversing mother-daughter car, including a mother car, a daughter car, a main rail, a short rail, and a branch rail; the mother car consists of a mother car body, mother car wheels, and a mother car drive device, the mother car wheels cooperate with the main rail, and the mother car body is controlled to travel on the main rail by the mother car drive device; the branch rail is set perpendicular to the main rail; the short rail is fixed on the mother car body, and the short rail has the same specifications and installation height as the branch rail, and the short rail connects with the branch rail when the mother car body travels to the junction of the branch rail and the main rail; the daughter car consists of a daughter car body, daughter car wheels, and a daughter car drive device, the daughter car wheels cooperate with the short rail or the branch rail, and the daughter car body is controlled to stay on the short rail or travel on the branch rail by the daughter car drive device. Existing mother-daughter transport systems typically transport flat-bottomed goods. Goods placed on the daughter cart have high stability. However, this ordinary daughter cart structure is not suitable for transporting cylindrical goods. When cylindrical goods are placed on ordinary daughter carts, their circular surfaces are not stable and they are prone to rolling off due to inertia during movement.

[0006] Secondly, in actual production, during the processing of roll-shaped goods, some process points output rolls with a central sleeve, while others output rolls without a central sleeve. The orientation of the saddle at the output point differs between the two types, meaning that the orientations with and without a central sleeve are placed at a 90° angle to each other. Ordinary trolleys can only handle one type of movement, limiting their applicability. This necessitates the use of overhead cranes or other devices to turn the roll-shaped goods, severely hindering the smooth flow of production logistics.

[0007] In view of the above, it is necessary to propose a production logistics transfer method using a rotary cart to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to solve the above-mentioned technical problems by providing a rotary cart for production material transfer.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a production material transfer rotary cart, comprising:

[0010] Main body;

[0011] The traveling device is located under the main body and is used to drive the sub-cars to move on the sub-car tracks or the mother car.

[0012] A rotating device is installed on the upper side of the main vehicle body. The rotating device has a rotation center, which is vertically installed on the end face of the main vehicle body. The rotating device is used to control the structure above it to rotate about the rotation center as an axis.

[0013] A bracket device, located above and controlled by a rotating device, includes a support plate with a limiting structure on its upper side that conforms to and supports the outer circumference of the rolled goods. Support structures are located at both ends of the support plate, with the upper end of each support structure serving as a support for the central sleeve. Each support structure includes a tray with a hinge shaft at its lower part, the tray being hinged to the end of the support plate via the hinge shaft. The hinge shaft is perpendicular to the length direction of the support plate. In the retracted state, the tray rotates horizontally, extending the support plate in the length direction; in the upright state, the tray is perpendicular to the support plate. A locking structure is also included to lock the tray to its side when it is adjusted to the correct position relative to the support plate.

[0014] A lifting device is installed between the rotating device and the bracket device to control the lifting and lowering movement of the bracket device between the low point position and the high point position.

[0015] Furthermore, the rotating device includes a turntable body, a slewing bearing, and a first geared motor. The slewing bearing includes an outer support ring and an inner support ring. The outer support ring is fixedly installed in an annular stepped groove of the main body, and the inner support ring is rotatably disposed inside the outer support ring. A plurality of balls are provided between the outer support ring and the inner support ring. The turntable body is disc-shaped, and the inner support ring is concentrically fixedly installed on the lower end face of the turntable body. An internal gear ring is provided on the inner sidewall of the inner support ring. The first geared motor is fixed in the main body, and a drive gear is provided at the output end of the first geared motor. The drive gear meshes with the internal gear ring.

[0016] Furthermore, the support plate is arranged in a cuboid shape, and its width or length direction matches the width of the inner wall of the saddle. The limiting structure is arranged on the upper surface of the support plate, and the limiting structure is an inverted trapezoidal inner groove, which is arranged along the length direction of the support plate.

[0017] Furthermore, the end of the bearing plate is provided with a corner groove, and the hinge shaft of the pallet is hinged at both ends of the corner groove. When the pallet is in the stored state, the upper side is flush with the bottom surface of the inner groove. The bracket device also includes a first telescopic cylinder for controlling the rotation of the pallet. The end of the corner groove is provided with a hinge groove, the lower end of the first telescopic cylinder is hinged in the hinge groove, and the free end of the first telescopic cylinder is hinged to the side of the pallet.

[0018] Furthermore, the locking structure is located on one side opposite to each other of the two trays. The locking structure includes a locking pin, a pin hole, a guide rail, and a plug rod. The locking pin includes two pins arranged vertically. The corner groove is provided with pin holes corresponding to the pins. The pins fall into the pin holes to limit the vertical movement of the tray. The side of the tray is provided with a vertical guide rail. The pins are provided with a first waist hole. The guide rail is provided with a plug rod passing through the first waist hole.

[0019] Furthermore, the lifting device includes a support arm structure with a movable joint in the middle. The movable joint is formed by two swing arms hinged together. The lower end of the support arm is hinged to the turntable body, and the upper end is hinged to the bearing plate. The movable joints of the two support arms are connected by a pull rod, which controls the two support arms to fold or support at the same angle. The turntable body is also provided with a lifting drive mechanism. The pull rod has a longitudinal waist hole in the middle. The drive mechanism includes an eccentric turntable and a second reduction motor. The second reduction motor is fixedly mounted on the turntable body. The output end of the second reduction motor is provided with an eccentric turntable. The eccentric turntable is located on one side of the longitudinal waist hole. A lever is vertically provided on the side of the eccentric turntable. The lever is placed in the longitudinal waist hole to form a slot fit.

[0020] Furthermore, the lifting device also includes a guide shaft, which is disposed on one side of the movable joint. When the support arm passes the vertical balance point, the movable joint abuts against one side of the guide shaft to form a support and positioning.

[0021] Furthermore, the lifting device includes at least one set of lifting cylinders disposed between the turntable body and the support plate.

[0022] Furthermore, the upper end of the support plate forms a V-shaped opening, which is used to support and limit the end of the central sleeve.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The trolley of the present invention can run on its own mother car and on the trolley track on the ground, and the bearing plate can be controlled to adjust its direction, which can adapt to the lifting operation of roll materials placed in different positions, and is convenient to use.

[0025] 2. The pallets at both ends of the support plate can be controlled to stand upright or lie flat under the control of the support structure, which is convenient for lifting materials with or without a central sleeve. Alternatively, without lifting the support plate, one side of the pallet can be laid flat and the other side upright to lift the material from the roll, making the operation of this device more versatile.

[0026] 3. The rotating device on the main car body can stably control the upper components to rotate around the rotation center, which makes it easy to adjust the axis of the lifted roll material in the same direction as the forward direction, thereby improving the stability of the material; it can also control the material to move laterally perpendicular to the track direction, so that the subcart can be used for both roll-type and center sleeve-type materials, avoiding the drawbacks of having two types of subcarts in the existing technology, and improving the efficiency of production logistics; at the same time, there is no need to set up other equipment such as overhead cranes to assist in the turning of goods.

[0027] 4. When different production process points face interruptions in the mother car trench, the rotating trolley of this device can be moved and used between different process points. When the mother car is not connected to the trench, the rotating trolleys of different process points can be used interchangeably, achieving the goal of connecting the trolley but not the trench, without affecting the safety settings such as fire escape routes between production process points. It enables trolley-to-trolley interaction between different production process points and can directly load and unload roll materials at production process points, replacing the use of overhead cranes in the existing technology to achieve cross-workshop scheduling. It effectively achieves the goals of maximizing functionality, simplifying equipment, and unifying automatic scheduling. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a rotary cart used for production logistics in this application;

[0029] Figure 2 This is a schematic diagram of the structure of the support saddle in this application;

[0030] Figure 3 This is a schematic diagram of the structure of the roll-supporting saddle in this application;

[0031] Figure 4 This is an exploded view of the rotary cart used for production logistics transfer in this application;

[0032] Figure 5 This is a three-dimensional structural diagram of the load-bearing plate located at a high point in this application;

[0033] Figure 6 This is a plan view of the bearing plate located at the lowest point in this application;

[0034] Figure 7 This is a plan view of the bearing plate located at a high point in this application;

[0035] Figure 8 This is a top view of the sub-vehicle track and the mother vehicle track in this application;

[0036] In the diagram: 1. Sub-carriage track; 2. Support saddle; 3. Center sleeve; 4. Inclined ramp; 5. Support saddle; 6. Main car body; 7. Track wheel; 8. Driving wheel; 9. Driven wheel; 10. Circular stepped groove; 11. Outer support ring; 12. Inner support ring; 13. Step edge; 14. Mounting hole; 15. Mounting slot; 16. First geared motor; 17. Ring groove; 18. Drive gear; 19. Mounting screw hole; 20. Bolt hole; 21. First saddle spacing; 22. Second saddle spacing; 23. V-shaped opening; 24. Support plate; 25. 16. Hinge shaft; 27. Corner groove; 28. First telescopic cylinder; 29. ​​Hinge groove; 30. Locking pin; 31. Pin hole; 32. Guide rail; 33. Insert rod; 34. First waist hole; 35. Crossbeam; 36. Inner groove; 37. Swing arm; 38. Support arm; 39. Pull rod; 40. Joint shaft; 41. Guide shaft; 42. Guide sleeve; 43. Guide rod; 44. Longitudinal waist hole; 45. Eccentric turntable; 46. Second geared motor; 47. Pulley; 48. Lifting cylinder; 49. Internal gear ring; 50. Bearing plate; 51. Turntable body. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] like Figure 8 As shown in the figure, this is a top view showing the mother car and daughter car track 1 aligned. Saddles for supporting materials are located on both sides of daughter car track 1, used for temporary support and storage of rolled goods. However, in actual production applications, the saddles at different production process points correspond to different rolled materials, and their support methods vary, such as... Figure 2As shown, saddles installed on both sides of the carriage track 1 support the rolled material with a central sleeve 3. This type of saddle is named the support saddle 2. Figure 2 As shown, the two side support saddles 2 support the two ends of the central sleeve 3, and do not contact the outer wall of the material on the drum. That is, at this time, the support saddles 2 support the two ends of the drum. In order to make the central sleeve 3 of the material on the drum centered on the two support saddles 2, a ramp 4 is provided on the upper side of the end of the support saddle 2 to guide the end. When the material on the drum is placed on it, the central sleeve 3 slides down to the centered position under the action of the ramps 4 on both sides, which facilitates the subsequent lifting operation. Figure 3 As shown in the diagram, this is a roll of material without the central sleeve 3. In this case, the saddle is named the roll support saddle 5. When the roll of material is temporarily stored on it, the outer sidewall of the roll of material rests directly on the saddle. It is understandable that... Figure 2 , Figure 3 The two types of saddle support structures result in a perpendicular angular relationship between the materials on the drum, i.e. Figure 2 The axial direction of the material on the middle drum is perpendicular to the carriage track 1, while Figure 3 The two forms of material placement using saddles, with the saddles parallel to the trolley track 1, necessitate two different structures for the existing trolleys, adapting to different needs. Figure 2 There are two types of lifting trolleys: one with a vertical axis and the other with a longitudinal axis parallel to the trolley track 1. These two types of lifting trolley structures are not interchangeable. If they are used in a forced manner, the cylindrical material will not be securely positioned and will easily fall during movement, causing an accident.

[0039] A production logistics transfer rotary trolley includes a main body 6, which is the lower part of the trolley and is used to travel on the trolley track 1 or stay on the mother car. It is controlled and moved by the mother car. A traveling device is provided at the lower part of the main body 6. The trolley has four sets of track wheels 7 arranged sequentially from front to back. Figure 1 As shown, there are driving wheels 8 and driven wheels 9, with the two sets of wheels at the front and rear ends being driving wheels 8 and the two sets of wheels in the middle being driven wheels 9. These are used to drive the subcart to move on the subcart track 1 or the mother car, so that the subcart can always maintain power connection when it moves across the subcart track 1 to the mother car.

[0040] A rotating device is disposed on the upper side of the main body 6. The rotating device has a rotation center, which is vertically disposed on the end face of the main body 6. The rotating device is used to control the structure above it to rotate about the rotation center as an axis; for example Figure 4As shown, a circular stepped groove 10 for mounting a rotating device is provided on the inner side of the upper part of the main body 6. The rotating device includes a slewing bearing, which includes an outer support ring 11 and an inner support ring 12. The outer support ring 11 and the inner support ring 12 are installed in a concentric circle. Several ball bearings are provided between the outer support ring 11 and the inner support ring, allowing the inner support ring 12 to rotate freely relative to the outer support ring 11. The outer support ring 11 is fixed on the stepped edge 13 of the circular stepped groove 10. A ring of mounting holes 14 is provided on the outer support ring 11. Fixing bolts pass through the mounting holes 14 to fix the outer support ring 11 to the stepped edge 13. The upper step 13 has a recessed mounting groove 15 on its inner side. A first reduction motor 16 is fixedly installed in the mounting groove 15. The inner wall of the outer support ring 11 and the outer wall of the inner support ring 12 each have at least one annular groove 17. The annular groove 17 of the outer support ring 11 corresponds to the annular groove 17 of the inner support ring 12 at different heights, and ball bearings are installed in the gap between the two annular grooves 17, so that the inner support ring 12 can rotate relative to the outer support ring 11. It can be understood that in actual use, in order to have better axial support force, the ball bearings can be replaced with rollers, so that the rotating device can bear a larger load weight above. The inner support ring 12 has an internal gear ring 48. The first reduction motor 16 is fixed in the main body 6. The output end of the first reduction motor 16 has a drive gear 18, which meshes with the internal gear ring 48. A turntable body 50 is mounted on the inner support ring 12. The turntable body 50 is disc-shaped. The inner support ring 12 is concentrically fixed on the lower end face of the turntable body 50. The side wall of the inner support ring is provided with a ring of mounting screw holes 19. The turntable body 50 is provided with bolt holes 20 corresponding to the positions of the mounting screw holes 19. Bolts are used to pass through the turntable body 50 from the top and connect it to the inner support ring. In actual use, the rotation angle of the turntable body 50 can be controlled by the first reduction motor 16 controlling the rotation of the drive gear 18.

[0041] The bracket assembly, located above the rotating device and controlled by the rotating device for rotation, such as... Figure 2 , Figure 3As shown, during the coil processing, different saddles are set at different production process points, including a drum saddle 2 and a coil support saddle 5. The difference between the two is that the drum saddle 2 supports the ends of the central sleeve 3 protruding at both ends of the coil material. The distance between the saddle supports on both sides of the drum saddle 2 is slightly larger than the axial length of the coil material. For ease of reference, the closest distance between the supports of the drum saddle 2 is named the first saddle spacing 21. The two supports of the coil support saddle 5 are inverted L-shaped, and the horizontal extension surface of the two supports is longer than that of the drum saddle 2. Therefore, the closest distance between the supports of the two sides of the coil support saddle 5 is shorter than the first saddle spacing 21, and is named the second saddle spacing 22. In actual use, this embodiment requires the bracket device to be used with both types of saddles. The bracket device includes a support plate 49, which is rectangular in shape. Its width or length direction matches the width of the inner wall of the saddle. Specifically, as shown in the figure... Figure 2 As shown, when the length direction of the support plate 49 is perpendicular to the trolley track 1, it is used to enter the drum saddle 2 to support the drum material with the intermediate drum. At this time, the length of the support plate 24 is slightly shorter than the distance between the vertical columns on both sides of the drum saddle 2, so that the support plate 49 can enter the drum saddle 2 in a direction perpendicular to the trolley track 1. Furthermore, the support plate 49 is provided with support structures at both ends. The support structures have the function of a retracted state and an upright state, and can stay at any angle within the range between the retracted state and the upright state, such as... Figure 2 As shown, the support plates 24 on both sides of the support plate 49 are in an upright state at this time. When entering the support saddle 2, the support plate 49 is kept at the low point position under the control of the lifting device. Then, the support plate 49 is raised to the high point position by the lifting device. The distance between the two support plates 24 is less than the distance 21 of the first saddle, so that the support parts at both ends can just hold the two ends of the central sleeve 3, thereby lifting the material in the form of the central sleeve 3. The upper end of the support plate 24 is the support part for supporting the central sleeve 3. The upper end of the support plate 24 forms a V-shaped opening 23. The V-shaped opening 23 can well support and limit the end of the central sleeve 3 and position it.

[0042] The support structure includes a support plate 24 with a hinge shaft 25 at the bottom. The support plate 24 is hinged to the end of the support plate 49 via the hinge shaft 25. Specifically, the end of the support plate 49 has a corner groove 26 with vertical and horizontal sidewalls. The hinge shaft 25 of the support plate 24 is hinged to both ends of the corner groove 26, making the length direction of the hinge shaft 25 perpendicular to the length direction of the support plate 49. This allows the support plate 24 to be in a retracted state and an upright state. In the retracted state, the support plate 24 rotates to a horizontal position, extending the support plate 49 in the length direction. In the retracted state, the upper side of the support plate 24 is flush with the bottom surface of the inner groove 35 on the upper side of the support plate 49. In the upright state, the support plate 24 is perpendicular to the support plate 49. The support device also includes a first telescopic cylinder 27 for controlling the rotation of the support plate 24. The end of the corner groove 26 has a hinge groove 28, such as... Figure 4 As shown, the hinge groove 28 is located at the end of the horizontal sidewall. The lower end of the first telescopic cylinder 27 is hinged in the hinge groove 28, and the free end of the first telescopic cylinder 27 is hinged to the side of the pallet 24. In actual use, two first telescopic cylinders 27 can be set on one side of each pallet 24 to facilitate stable control of the pallet 24 to rotate. It can be understood that the first telescopic cylinder 27 is a hydraulic cylinder or an electric telescopic cylinder. Its power source can be the battery installed in the main body 6 to provide electrical energy conversion, or it can be connected to the cable trench in the subcar track 1 through a sliding contact mechanism installed at the lower end of the main body 6 to realize the power transmission.

[0043] In actual use, the first telescopic cylinder 27 can also control the pallet 24 to stay at any angle between 0 and 90°. In actual production, when transporting cylindrical materials with sloping or conical ends, the pallet 24 is controlled to fit the sloping end, thereby improving the clamping and positioning effect of the material and ensuring the stability of the material during transportation.

[0044] Because the corner groove 26 has a vertical sidewall, when the pallet 24 is in an upright position under the control of the first telescopic cylinder 27, the sidewall of the pallet 24 abuts against the vertical sidewall, thereby maintaining vertical positioning. Since the main body 6 is powered by electricity, if there is a fluctuation in power or poor contact of the sliding contact mechanism, causing the first telescopic cylinder 27 to lose hydraulic support, the rolled goods supported on the inverted pallet 24 are very likely to become unstable and fall. To avoid this situation, a locking structure is also included, which locks the pallet 24 to the side when it is adjusted to the correct position relative to the support plate 49.

[0045] Specifically, the locking structure is set on one side opposite to each other of the two support plates 24. The locking structure includes a locking pin 29, a pin hole 30, a guide rail 31, and a plug rod 32. The locking pin 29 includes two pins arranged vertically. The corner groove 26 is provided with a pin hole 30 corresponding to the pin. The pin falls into the pin hole 30 to limit the vertical movement of the support plate 24. The side of the support plate 24 is provided with a vertical guide rail 31. The pin is provided with a first waist hole 33. The guide rail 31 is provided with a plug rod 32 passing through the first waist hole 33. The locking pins 29 on both sides move vertically under the guidance of the guide rail 31. The insertion rod 32 passes through the first waist hole 33 to limit the movement of the locking pins 29 and can connect the locking pins 29 to the pallet 24. When the pallet 24 is in a vertical state, the locking pins 29 can automatically insert into the pin hole 30 under the drive of gravity, thereby keeping the pallet 24 in a vertical position. Even if the power supply is lost, the pallet 24 will not flip down, thus ensuring the safety of supporting the goods. In actual use, when the pallet 24 needs to be transformed into a retracted state (i.e., a horizontal position), it can be unlocked by pushing the locking pins 29 upwards using an electric telescopic rod installed on the outer side of the pallet 24. Specifically, the locking pins 29 on both sides are connected by a crossbeam 34, forming an H-shaped structure. An electric telescopic rod is installed between the locking pins 29 on both sides, with the free end of the electric telescopic rod resting on the crossbeam 34. When the telescopic rod extends, it pushes out the locking pins 29 on both sides, unlocking the pallet 24. Then, the first telescopic cylinder 27 controls the pallet 24 to be lowered to a horizontal position. It is understood that in this embodiment, when the pallet 24 lifts the goods and moves them on the trolley track 1, the direction of movement of the goods is perpendicular to its axis. To improve the stability of the movement process, after the goods are pulled off the saddle, a rotating device can be used to change the direction of the goods, making its axis parallel to the direction of the trolley track 1, thereby increasing the stability of the goods' movement.

[0046] When the pallet 24 is in the retracted state, it is suitable for supporting the roll saddle 5. During use, at least one side of the pallet 24 on the support plate 49 should be in a horizontal retracted state, and the support plate 49 should be kept parallel to the trolley track 1 by a rotating device. It is understood that the width of the support plate 49 should match the second saddle spacing 22, so that when the lifting device controls the support plate 49 to rise, the support plate 49 can pass through the second saddle spacing 22, and the limiting structure on the upper side of the support plate 49 can support the circumferential outer wall of the roll goods. Figure 3 , 5As shown, the limiting structure is disposed on the upper end face of the bearing plate 49. The limiting structure is an inverted trapezoidal inner groove 35, which is disposed along the length direction of the bearing plate 49. Since the axial direction of the rolled goods is parallel to the trolley track 1 in this embodiment, the length direction of the bearing plate 49 is controlled to be aligned with the trolley track 1. This allows the bearing plate 49 to pass through the second saddle spacing 22. Secondly, the inverted trapezoidal groove on the bearing plate 49 can be used to limit the rolling goods. Since the inverted trapezoidal groove has slopes on both sides, the outer wall of the rolling goods is supported by the slopes, which facilitates the fixing of the goods. Furthermore, since the direction of the goods is consistent with the direction of movement of the trolley, the stability of the goods during the movement of the trolley can be greatly improved. In some embodiments, the function of scooping up goods can also be realized. Specifically, one end of the pallet 24 can be placed horizontally and moved from that end to be inserted between the second saddle spacing 22. The other side of the vertical pallet 24 blocks one end of the goods. As the trolley moves, the vertical pallet 24 pushes the goods off the saddle and places them directly on the support plate 49. Then, both ends of the pallet 24 are vertical to limit the goods at both ends. With the help of the inverted trapezoidal groove, the goods can be limited on all four sides, and the fixing effect is good.

[0047] Understandably, the above structure allows for the reversal of cargo direction, enabling the trolley to accommodate cargo placed in various orientations, and allowing for the movement of cargo without the need for additional auxiliary equipment such as overhead cranes.

[0048] A lifting device is installed between the rotating device and the bracket device to control the lifting and lowering movement of the bracket device between the low point position and the high point position.

[0049] Specifically, in this embodiment, the lifting device includes a support arm 37 structure. The support arm 37 has a movable joint in the middle, which is formed by two swing arms 36 hinged together. The lower end of the support arm 37 is hinged to the turntable body 50, and the upper end is hinged to the bearing plate 49. The movable joints of the two support arms 37 are connected by a pull rod 38. Figure 4-7 As shown, to maintain the stable lifting and lowering of the support plate 49, four support arms 37 can be set between the turntable body 50 and the support plate 49. Two support arms 37 at the same end form one group, and the four support arms 37 on both sides are divided into two groups, forming four stable support points for the support plate 49. The movable joints of the same group of support arms 37 are connected by joint shafts 39, which can control the synchronous deformation of that group of support arms 37. The two groups of support arms 37 are connected by a pull rod 38, that is, the two ends of the pull rod 38 are respectively hinged to two joint shafts 39. The pull rod 38 can control the folding or support of the two groups of support arms 37 on both sides at the same angle. Figure 6 With the support arm 37 folded, the load-bearing plate 49 is at its lowest point. Figure 7This diagram illustrates the highest point of the support arm 37 in its supported state, just past the vertical equilibrium point. When both sets of support arms 37 are folded, the bracket device can be controlled to fall. When the two swing arms 36 of the support arm 37 are collinear, i.e., the support arm 37 is perpendicular to the turntable body 50, this is the vertical equilibrium point, and the bracket device is at its highest point. In this embodiment, the lifting and lowering movement of the bracket device is controlled by folding or straightening the support arms 37. Furthermore, this embodiment also includes a guide shaft 40, which is located on one side of the movable joint. The guide shaft 40 includes a guide sleeve 41 and a guide rod 42. Located at the four corners between the turntable body 50 and the support plate 49, guide sleeves 41 are vertically fixed to the turntable body 50, and guide rods 42 are vertically fixed to the bottom of the support plate 49. The guide rods 42 slide into the guide sleeves 41. When the support plate 49 falls and the guide sleeves 41 retract, they are at their lowest point. At this lowest point, the guide sleeves 41 provide stable support for the support plate 49. During the gradual extension and lifting of the support arm 37, since the support arm 37 cannot precisely maintain its position at the vertical equilibrium point, in this embodiment, a limit is set on the support arm 37 when it just passes the vertical equilibrium point. Figure 5 , 7 As shown, specifically, when the support arm 37 passes the vertical balance point, the movable joint abuts against one side of the guide shaft 40 to form a support and positioning; both sets of support arms 37 are connected by joint shafts 39. During the extension of the support arm 37, the joint shafts 39 move accordingly. Since the guide sleeve 41 is set on one side of the movable joint, the joint shafts 39 can be stuck on the outer wall of the guide sleeve 41 to form a limit.

[0050] Furthermore, the turntable body 50 is also equipped with a lifting drive mechanism. The pull rod 38 has a longitudinal waist hole 43 in its middle. The drive mechanism includes an eccentric turntable 44 and a second reduction motor 45. The second reduction motor 45 is fixedly mounted on the turntable body 50. The output end of the second reduction motor 45 is equipped with the eccentric turntable 44, which is located on one side of the longitudinal waist hole 43. A lever 46 is vertically mounted on the side of the eccentric turntable 44, and the lever 46 is placed within the longitudinal waist hole 43 to form a groove fit. Figure 4 , 6 As shown, in actual use, the second reduction motor 45 controls the rotation of the eccentric turntable 44. The lever 46 on one side of the eccentric turntable 44 cooperates with the slot of the longitudinal waist hole 43 to pull the traction rod 38 to move laterally. During its lateral movement, the lever 46 moves longitudinally within the longitudinal waist hole 43. The folding or straightening control of the two side support arms 37 can be controlled by the lateral movement of the traction rod 38. In actual use, the number of traction rods 38 and lifting drive mechanisms can be increased to achieve lifting control of heavier goods. In this embodiment, one traction rod 38 is used as an example.

[0051] In other embodiments, the lifting device includes at least one set of lifting cylinders 47 disposed between the turntable body 50 and the support plate 49. Multiple lifting cylinders 47 may also be disposed simultaneously and arranged along the length of the support plate 49. These cylinders can be hydraulic cylinders or electric telescopic cylinders. Their driving source can be derived from the electrical energy provided by the battery disposed on the main vehicle body 6, or the power can be transmitted through a sliding contact mechanism disposed at the lower end of the main vehicle body 6 connected to the cable trench in the sub-vehicle track 1.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary cart for production logistics, characterized in that, include: Main body (6); The traveling device is located below the main car body (6) and is used to drive the subcar to move on the subcar track (1) or the mother car. A rotating device is provided on the upper side of the main body (6). The rotating device has a rotation center, which is vertically provided on the end face of the main body (6). The rotating device is used to control the structure above it to rotate around the rotation center as an axis. The bracket device is located on the upper side of the rotating device and rotated under the control of the rotating device. The bracket device includes a support plate (49). The upper side of the support plate (49) is provided with a limiting structure that fits against and supports the outer circumference of the roll goods. The support plate (49) is provided with support structures at both ends. The upper end of the support structure is a support part for supporting the central sleeve (3). The support structure includes a support plate (24) and a hinge shaft (25) at the lower part. The support plate (24) is hinged to the end of the support plate (49) through the hinge shaft (25). The direction of the hinge shaft (25) is perpendicular to the length direction of the support plate (49). It also includes a locking structure, which locks the support plate (24) to the side when the support plate (24) is adjusted to the position relative to the support plate (49). A lifting device is installed between the rotating device and the bracket device to control the lifting and lowering movement of the bracket device between the low point position and the high point position.

2. The rotary cart for production material transfer according to claim 1, characterized in that, The rotating device includes a turntable body (50), a slewing bearing, and a first geared motor (16). The slewing bearing includes an outer support ring (11) and an inner support ring (12). The outer support ring is fixedly installed in the annular stepped groove of the main vehicle body (6). The inner support ring (12) is rotatably disposed inside the outer support ring. A number of balls are provided between the outer support ring (11) and the inner support ring. The turntable body (50) is disc-shaped. The inner support ring (12) is concentrically fixedly installed on the lower end face of the turntable body (50). The inner sidewall of the inner support ring is provided with an internal gear ring (48). The first geared motor (16) is fixed inside the main vehicle body (6). The output end of the first geared motor (16) is provided with a drive gear (18). The drive gear (18) meshes with the internal gear ring (48).

3. The rotary cart for production material transfer according to claim 1, characterized in that, The support plate (49) is rectangular in shape, and its width or length direction matches the width of the inner wall of the saddle. The limiting structure is set on the upper end face of the support plate (49). The limiting structure is an inverted trapezoidal inner groove (35), and the inner groove (35) is set along the length direction of the support plate (49).

4. A production material transfer rotary cart according to claim 3, characterized in that, The end of the bearing plate (49) is provided with a corner groove (26), and the hinge shaft (25) of the support plate (24) is hinged at both ends of the corner groove (26). When the support plate (24) is in the stored state, the upper side is flush with the bottom surface of the inner groove (35). The bracket device also includes a first telescopic cylinder (27) for controlling the rotation of the support plate (24). The end of the corner groove (26) is provided with a hinge groove (28). The lower end of the first telescopic cylinder (27) is hinged in the hinge groove (28), and the free end of the first telescopic cylinder (27) is hinged to the side of the support plate (24).

5. A production material transfer rotary cart according to claim 4, characterized in that, The locking structure is set on the opposite side of the two trays (24). The locking structure includes a locking pin (29), a pin hole (30), a guide rail (31), and a plug rod (32). The locking pin (29) includes two pins arranged vertically. The corner groove (26) is provided with a pin hole (30) corresponding to the pin. The pin falls into the pin hole (30) for vertical positioning of the tray (24). The side of the tray (24) is provided with a vertical guide rail (31). The pin is provided with a first waist hole (33). The guide rail (31) is provided with a plug rod (32) passing through the first waist hole (33).

6. A production material transfer rotary cart according to claim 2, characterized in that, The lifting device includes a support arm (37) structure. The support arm (37) has a movable joint in the middle, formed by two hinged swing arms (36). The lower end of the support arm (37) is hinged to the turntable body (50), and the upper end is hinged to the bearing plate (49). The movable joints of the two support arms (37) are connected by a pull rod (38), which controls the folding or support of the two support arms (37) at the same angle. The turntable body (50) is also equipped with a lifting drive mechanism. The pull rod (38) has a longitudinal waist hole (43) in the middle. The drive mechanism includes an eccentric turntable (44) and a second geared motor (45). The second geared motor (45) is fixedly mounted on the turntable body (50). The output end of the second geared motor (45) is provided with an eccentric turntable (44). The eccentric turntable (44) is located on one side of the longitudinal waist hole (43). A lever (46) is vertically provided on the side of the eccentric turntable (44). The lever (46) is placed in the longitudinal waist hole (43) to form a groove fit.

7. A production material transfer rotary cart according to claim 6, characterized in that, The lifting device also includes a guide shaft (40), which is located on one side of the movable joint. When the support arm (37) passes the vertical balance point, the movable joint abuts against one side of the guide shaft (40) to form a support and positioning.

8. A production logistics transfer rotary cart according to claim 1, characterized in that, The lifting device includes at least one set of lifting cylinders (47) disposed between the turntable body (50) and the support plate (49).

9. A production material transfer rotary cart according to claim 1, characterized in that, The upper end of the support plate (24) forms a V-shaped opening (23), which is used to support and limit the end of the central sleeve (3).

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