Skip car device and feeding and discharging equipment

Abstract

The utility model belongs to the technical field of technical equipment, and discloses a skip car device and feeding and discharging equipment, the skip car device is used for transferring material trays, the skip car device comprises a fixed bottom plate, a lifting plate and a guide shaft, and the lifting plate is located on the upper side of the fixed bottom plate; the number of the guide shafts is at least two, the at least two guide shafts are both installed on the fixed bottom plate, the lifting plate is arranged on the at least two guide shafts in a sleeving mode and can move in a reciprocating mode in the axial direction of the guide shafts, and the material disc is movably arranged on the guide shafts in a sleeving mode and can be placed on the lifting plate. The at least two guide shafts limit the movement of the lifting plate in the horizontal direction at the same time, so that the effect of reducing shaking of the lifting plate is achieved, the guide effect on the lifting plate is improved, the lifting plate drives the material disc to ascend and descend stably, the accuracy of feeding and discharging of the material disc is improved, and the efficiency of feeding and discharging of the material disc is improved. And the lifting plate drives the tray to lift, so that the tray is prevented from being damaged due to direct contact between the lifting mechanism and the tray, and the effect of protecting the tray is achieved.

Description

Technical Field

[0001] This utility model relates to the field of counting equipment technology, and in particular to a material cart device and a loading and unloading device. Background Technology

[0002] In modern industrial production, accurate and efficient material counting is crucial for ensuring smooth production and improving quality control. High-speed online X-ray counting equipment has emerged to address this need, revolutionizing counting methods across numerous fields with its superior performance. Based on the penetrating characteristics of X-rays, this equipment recognizes that different materials and thicknesses absorb X-rays to varying degrees, resulting in differences in the intensity of X-rays received by the detector and thus forming corresponding images. The advanced image processing algorithms onboard the equipment accurately identify the material's outline, shape, size, and other features in the image, and then, through complex calculation models, quickly and accurately complete the material quantity count.

[0003] In high-speed online X-ray counting equipment systems, the multi-functional material cart is a crucial hub for material flow and connection, playing a decisive role in the overall efficiency of the equipment. The multi-functional material cart and the X-ray counting equipment achieve real-time data interaction via industrial Ethernet or wireless communication modules. When the material cart approaches the equipment, it automatically sends material information. Upon receiving this information, the equipment quickly adjusts X-ray emission parameters and image acquisition frequency based on the material characteristics to ensure accurate counting. After completing the counting, the equipment feeds back the results to the material cart, which then updates the material data and plans the subsequent transport path. During production, the material cart transports materials to the X-ray counting equipment in an orderly manner according to the production plan. After the equipment completes the counting, the material cart quickly transfers the materials to the next process, freeing up space for new material trays. The entire collaborative operation process is tightly integrated and highly efficient, significantly improving production cycle time.

[0004] In the existing technology, most common loading and unloading devices use a single guide shaft. The single guide shaft is a cantilever beam structure with insufficient rigidity, which makes it easy to shake during the loading and unloading process, affecting the accuracy of loading and unloading, reducing efficiency. In addition, the direct contact between the lifting mechanism and the material tray can easily cause damage to the material tray by the lifting mechanism.

[0005] Therefore, there is an urgent need to propose a material cart device and loading / unloading equipment to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a material cart device to solve the problems of insufficient rigidity of a single guide shaft causing the material tray to shake during loading and unloading, affecting the accuracy of loading and unloading, resulting in low efficiency, as well as the problem that the lifting mechanism is prone to damaging the material tray.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A material cart device for transferring material trays, the material cart device comprising:

[0009] Fixed base plate;

[0010] The lifting platform is located on the upper side of the fixed base plate;

[0011] The guide shaft has at least two guide shafts, both of which are mounted on a fixed base plate. The lifting plate is sleeved on the at least two guide shafts and can reciprocate along the axial direction of the guide shafts. The material tray is movably sleeved on the guide shafts and can be placed on the lifting plate.

[0012] Preferably, at least two guide shafts are evenly distributed on the surface of the lifting plate.

[0013] Preferably, the material cart device also includes a linear bearing, which is sleeved on the guide shaft and fixedly connected to the side of the lifting plate facing the fixed base plate.

[0014] Preferably, the material cart device also includes a limiting component, the height of which is not less than the height of the linear bearing. The limiting component is fixed on the side of the fixed base plate facing the lifting plate, or the limiting component is installed on the side of the lifting plate facing the fixed base plate.

[0015] Preferably, the material cart device also includes a guide head, which is installed at the top of the guide shaft. A first through hole is provided on the lifting plate, through which the guide shaft passes. A second through hole is provided on the material tray, through which the material tray is sleeved on the guide shaft. The diameter of the guide head is larger than the diameter of the first through hole and smaller than the diameter of the second through hole.

[0016] Preferably, the material cart device also includes casters, which are located on the underside of the fixed base plate and are rotatably connected to the fixed base plate.

[0017] Another objective of this invention is to provide a loading and unloading device to solve the problems of insufficient rigidity of the guide shaft of the material cart device, which causes the material tray to shake during the loading and unloading process, affecting the accuracy of loading and unloading, resulting in low working efficiency of the loading and unloading device, as well as the problem that the material tray is easily damaged by the lifting mechanism.

[0018] To achieve this objective, the present invention adopts the following technical solution:

[0019] A loading and unloading device includes a lifting device and the aforementioned material cart device. The lifting device includes a plate and a lifting bracket. The plate is slidably connected to the lifting bracket in the vertical direction. The plate can support the bottom of the lifting plate and drive the lifting plate to move back and forth in the vertical direction.

[0020] Preferably, the lifting device further includes a first guide member connected to the lifting bracket, the first guide member extending in a horizontal direction, and the material cart device further includes a first roller structure, the first roller structure including a first roller, the first roller being rotatably connected to the fixed base plate, the axis of the first roller being perpendicular to the horizontal plane, and the first roller being able to roll on the side wall of the first guide member.

[0021] Preferably, the lifting device further includes a second guide member, which is set at an angle to the horizontal plane, and the highest point of the second guide member is connected to the lifting bracket. The material cart device also includes a second roller, which is rotatably connected to the lower side of the fixed base plate. The axis of the second roller is parallel to the horizontal plane, and the second roller can roll on the upper surface of the second guide member.

[0022] Preferably, the lifting device also includes a sensor and a lifting drive assembly. A third through hole is provided on the lifting plate. The third through hole is located at the edge of the guide shaft. The sensor can detect whether a material tray is sleeved on the guide shaft through the third through hole. The drive end of the lifting drive assembly is connected to the insert plate. The lifting drive assembly can drive the insert plate to lift.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a material cart device and a loading / unloading device. The material cart device is used to transfer material trays and includes a fixed base plate, a lifting plate, and guide shafts. The lifting plate is located on the upper side of the fixed base plate. There are at least two guide shafts, both mounted on the fixed base plate. The lifting plate is sleeved on the at least two guide shafts and can reciprocate along the axial direction of the guide shafts. The material tray is movably sleeved on the guide shafts and can be placed on the lifting plate. At least two guide shafts are simultaneously sleeved on one lifting plate, and these shafts simultaneously limit the horizontal movement of the lifting plate, reducing its sway and improving its guiding effect. This enhances the stability of the lifting plate's movement, achieving smooth lifting. With the material tray placed on the lifting plate, the smooth lifting of the lifting plate drives the smooth lifting of the material tray, improving the accuracy and efficiency of loading and unloading. Furthermore, when using a lifting mechanism to lift the material tray, the tray can be placed on the lifting plate, and the lifting plate can then lift the tray, avoiding direct contact between the lifting mechanism and the material tray, thus protecting the material tray. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the material cart device (equipped with a 7-inch material tray) provided in this embodiment;

[0026] Figure 2 This is a schematic diagram of the material cart device provided in this embodiment (equipped with a 15-foot material tray);

[0027] Figure 3This is a right view of the material cart device provided in this embodiment;

[0028] Figure 4 This is a schematic diagram of the first structure of the loading and unloading equipment provided in this embodiment;

[0029] Figure 5 This is a schematic diagram of the second structure of the loading and unloading equipment provided in this embodiment.

[0030] In the picture:

[0031] 100. Material tray; 201. Fixed base plate; 202. Lifting plate; 203. Guide shaft; 204. Guide shaft fixing seat; 205. Linear bearing; 206. Limiting component; 207. Guide head; 208. Caster; 209. First roller; 210. Spacer; 211. Second roller; 212. Second roller fixing seat; 213. Second roller shaft; 214. Third through hole; 215. Fixing component; 216. Caster fixing seat; 217. Trolley handle; 301. Insert plate; 302. Lifting bracket; 303. Lifting drive assembly. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] This embodiment provides a material cart device to solve the problems of insufficient rigidity of the guide shaft causing shaking during loading and unloading, affecting the accuracy of loading and unloading, resulting in low efficiency, as well as the problem that the lifting mechanism is prone to damaging the material tray.

[0037] Specifically, such as Figure 1 As shown, a material cart device is used to transfer a material tray 100. The material cart device includes a fixed base plate 201, a lifting plate 202, and guide shafts 203. The lifting plate 202 is located on the upper side of the fixed base plate 201. There are at least two guide shafts 203, each mounted on the fixed base plate 201. The lifting plate 202 is sleeved on the at least two guide shafts 203 and can reciprocate along the axial direction of the guide shafts 203. The material tray 100 is movably sleeved on the guide shafts 203 and can be placed on the lifting plate 202. At least two guide shafts 203 are simultaneously sleeved on one lifting plate 202, and the at least two guide shafts 203 simultaneously limit the horizontal movement of the lifting plate 202, thereby reducing the swaying of the lifting plate 202, improving the guiding effect of the lifting plate 202, and thus improving the stability of the lifting of the lifting plate 202. The material tray 100 is placed on the lifting plate 202. The smooth lifting and lowering of the lifting plate 202 drives the smooth lifting and lowering of the material tray 100, thereby improving the accuracy and efficiency of loading and unloading the material tray 100. Furthermore, when using a lifting mechanism to lift the material tray 100, the material tray 100 can be placed on the lifting plate 202, and the lifting plate 202 drives the material tray 100 to rise and fall, avoiding direct contact between the lifting mechanism and the material tray 100, thus protecting the material tray 100. In this embodiment, the number of guide shafts 203 is 5. In other embodiments, the number of guide shafts 203 can be 2, 4, or 7, etc.

[0038] Optionally, the material cart device further includes a guide shaft fixing seat 204, which is located on the lower side of the fixed base plate 201, and the guide shaft 203 is located on the upper side of the fixed base plate 201. The guide shaft fixing seat 204 is provided with an internal thread, and the bottom of the guide shaft 203 is provided with an external thread. The guide shaft 203 passes through the fixed base plate 201, and the internal thread and the external thread cooperate to achieve a stable connection between the guide shaft 203 and the fixed base plate 201. In other embodiments, the guide shaft 203 may also be welded to the fixed base plate 201. The number of guide shaft fixing seats 204 is equal to the number of guide shafts 203 and corresponds one-to-one.

[0039] Furthermore, at least two guide shafts 203 are evenly distributed on the surface of the lifting plate 202, which further improves the guiding effect of the guide shafts 203 on the lifting plate 202 and further improves the stability of the lifting plate 202 during the lifting process.

[0040] Furthermore, such as Figures 1 to 2 As shown, the distance between two adjacent guide shafts 203 is not less than 7.5 feet. When the trolley device is applied to a 7-foot tray 100, several 7-foot trays 100 are fitted onto each guide shaft 203, making the trolley device provided in this embodiment applicable to 7-foot trays 100. When the trolley device is applied to a 13-foot or 15-foot tray 100, several trays 100 are fitted onto the middle guide shaft 203, and the remaining guide shafts 203 are located around the tray 100, making the trolley device of this embodiment also applicable to 13-foot and 15-foot trays 100, thus expanding its applicability. In this embodiment, the distance between two adjacent guide shafts 203 is 8 feet. In other embodiments, the distance between two adjacent guide shafts 203 can be 7.5 feet or 9 feet, etc. It should be noted that the distance between two adjacent guide shafts 203 can be adjusted according to the diameter of the tray 100 to accommodate trays 100 of different sizes.

[0041] Optionally, the material cart device also includes a linear bearing 205, which is sleeved on the guide shaft 203. The linear bearing 205 is fixedly connected to the side of the lifting plate 202 facing the fixed base plate 201. The linear bearing 205 restricts the displacement of the lifting plate 202 in the radial direction of the guide shaft 203, and only allows the lifting plate 202 to reciprocate along the axial direction of the guide shaft 203, which plays a precise guiding and positioning role, ensuring the straightness and accuracy of the movement of the lifting plate 202, and thus ensuring the accuracy of the material tray 100 feeding.

[0042] Optionally, the material cart device further includes a limiting member 206. The height of the limiting member 206 is not less than the height of the linear bearing 205. The limiting member 206 is fixed to the side of the fixed base plate 201 facing the lifting plate 202. The limiting member 206 serves to isolate the linear bearing 205 from the fixed base plate 201, preventing the linear bearing 205 from directly colliding with the fixed base plate 201 when the lifting plate 202 is at its lowest point, thus avoiding damage to the linear bearing 205 and affecting the straightness and accuracy of the lifting plate 202's movement. In this embodiment, the height of the limiting member 206 is greater than the height of the linear bearing 205. In other embodiments, the height of the limiting member 206 is equal to the height of the linear bearing 205. In other embodiments, the limiting member 206 can also be installed on the side of the lifting plate 202 facing the fixed base plate 201.

[0043] Furthermore, the number of limiting members 206 is at least two, and the at least two limiting members 206 are evenly distributed along the circumference of the fixed base plate 201 to prevent the lifting plate 202 from tilting and causing compression of the linear bearing 205, thereby further improving the effect of the limiting members 206 in protecting the linear bearing 205. In this embodiment, the number of limiting members 206 is 6. In other embodiments, the number of limiting members 206 can be 2, 5, or 10, etc.

[0044] Optionally, the material cart device also includes a guide head 207, which is installed at the top of the guide shaft 203. A first through hole is provided on the lifting plate 202, through which the guide shaft 203 passes. A second through hole is provided on the material tray 100, through which the material tray 100 is sleeved on the guide shaft 203. The diameter of the guide head 207 is larger than the diameter of the first through hole and smaller than the diameter of the second through hole, thereby limiting the movement of the lifting plate 202 by the guide head 207, preventing the lifting plate 202 from falling off the guide shaft 203 while satisfying the loading and unloading of the material tray 100 on the guide shaft 203.

[0045] Furthermore, the guide head 207 is designed to be narrower at the top and wider at the bottom, which serves to guide the material tray 100 onto the guide shaft 203, making it easier to fit the material tray 100 and thus improving the working efficiency of the entire material cart device.

[0046] Optionally, such as Figures 2 to 3 As shown, the material cart device also includes a fixing component 215. The fixing component 215 is made of aluminum profile. The fixing component 215 is fixedly installed on the lower side of the fixed base plate 201. The aluminum profile has high strength and hardness. After being fixedly connected with the fixed base plate 201, it can form a stable frame structure, so that the fixed base plate 201 can withstand greater weight and external force, thereby increasing the load capacity of the fixed base plate 201 on the material tray 100.

[0047] Optionally, the material cart device also includes casters 208, which are connected to the fixing member 215 to enable the entire material cart device to move in different directions on the working ground, making it more convenient to pick up and put down the material tray 100 in different positions.

[0048] Furthermore, the number of casters 208 is at least two, and the at least two casters 208 are evenly distributed on both sides of the fixing member 215. The casters 208 support the fixing member 215, preventing the entire material cart device from tilting and making the movement of the entire material cart device more convenient. In this embodiment, the number of casters 208 is four. In other embodiments, the number of casters 208 can be two, three, or six, etc. In this embodiment, all four casters 208 are movable casters. In other embodiments, the four casters 208 include two movable casters and two fixed casters. It should be noted that the number of fixed casters and movable casters is not limited and can be adjusted according to the actual situation.

[0049] Furthermore, the material cart device also includes a caster mounting base 216, which is fixedly connected to a fixing member 215. The caster 208 is detachably rotatably connected to the caster mounting base 216, thus connecting the caster 208 to the fixing member 215. When the caster 208 is worn or damaged and needs to be replaced, the old caster 208 can be removed and a new caster 208 can be installed simply by disassembling the connecting part between the caster mounting base 216 and the caster 208, making the replacement process more convenient and saving maintenance time and costs.

[0050] Optionally, the material cart device also includes a cart handle 217, which is fixedly connected to the fixed base plate 201. By gripping the cart handle 217 and applying force in different directions, the travel direction of the entire material cart device can be easily changed, allowing it to flexibly move between different workplaces.

[0051] This embodiment also provides a loading and unloading device to solve the problems of insufficient rigidity of the guide shaft of the material cart device, which causes shaking during the loading and unloading process, affecting the accuracy of loading and unloading, resulting in low working efficiency of the loading and unloading device, and the problem that the lifting mechanism is prone to damaging the material tray.

[0052] Specifically, such as Figures 3 to 5As shown, a loading and unloading device includes a lifting device and the aforementioned material cart device. The lifting device includes a plate 301 and a lifting bracket 302. The plate 301 is slidably connected to the lifting bracket 302 in the vertical direction. The plate 301 can support the bottom of the lifting plate 202 and drive the lifting plate 202 to reciprocate in the vertical direction, thereby enabling the lifting plate 202 to drive the material tray 100 to move in the vertical direction. When the lifting plate 202 drives the material tray 100 to move in the vertical direction, at least two guide shafts 203 guide the lifting plate 202, improving the stability of the lifting plate 202 and the accuracy of loading and unloading the material tray 100, thereby improving the efficiency of loading and unloading the material tray 100. In addition, by using the lifting plate 202 to drive the lifting and unloading of the material tray 100, the plate 301 is prevented from directly contacting the material tray 100 and causing damage to the material tray 100, thus achieving the effect of protecting the material tray 100.

[0053] Furthermore, the lifting device also includes a first guide member, which is connected to the lifting bracket 302 and extends horizontally. The material cart device also includes a first roller structure, which includes a first roller 209. The first roller 209 is rotatably connected to the fixed base plate 201. The axis of the first roller 209 is perpendicular to the horizontal plane. The first roller 209 can roll on the side wall of the first guide member to guide the material cart device in the horizontal direction and improve the accuracy of the docking between the material cart device and the lifting device in the horizontal direction.

[0054] Furthermore, the rotating shaft that rotates with the first roller 209 is mounted on the fixed base plate 201 by a screw, thereby achieving the installation connection between the first roller 209 and the fixed base plate 201.

[0055] Furthermore, the number of first roller structures is at least two, and these at least two first roller structures are distributed on both sides of the fixed base plate 201, further improving the accuracy of the horizontal docking between the material cart device and the lifting device. The number of first rollers 209 in the first roller structure can be one, two, or more. When the number of first rollers 209 in the first roller structure is two or more, the contact area between the first roller structure and the first guide member can be increased, improving the guiding effect of the material cart device in the horizontal direction, and further improving the accuracy of the horizontal docking between the material cart device and the lifting device. In this embodiment, the number of first roller structures is eight. In other embodiments, the number of first roller structures can be two, six, or sixteen, etc. In this embodiment, four of the eight first roller structures include two first rollers 209, and the remaining four first roller structures include one first roller 209. It should be noted that the number of first rollers 209 in different first roller structures can be the same or different. The number of first rollers 209 included in the first roller structure can be set according to the actual situation to ensure that the first guide member and the first rollers 209 cooperate sufficiently to guide the material cart device.

[0056] Optionally, the first roller structure further includes a spacer 210. When the first roller structure includes two or more first rollers 209, adjacent first rollers 209 are separated by the spacer 210. After separation, the height of the entire first roller structure increases in the vertical direction, enabling the first rollers 209 to contact the first guide member at a higher position, further improving the horizontal guidance of the material cart device and further improving the accuracy of horizontal docking between the material cart device and the lifting device. In this embodiment, the spacer 210 is annular; in other embodiments, the spacer 210 is arc-shaped or square annular.

[0057] Optionally, the lifting device also includes a second guide member, which is set at an angle to the horizontal plane, and the highest point of the second guide member is connected to the lifting bracket 302. The material cart device also includes a second roller 211, which is rotatably connected to the lower side of the fixed base plate 201. The axis of the second roller 211 is parallel to the horizontal plane, and the second roller 211 can roll on the upper surface of the second guide member. In practical applications, the casters 208 of the material cart device are pushed from the lowest point of the second guide member onto the second guide member, and then the material cart device is pushed to gradually raise the material cart device. The second roller 211 supports the entire material cart device, thereby raising the material cart device relative to the ground on site. This avoids the ground on site being too low, causing the material cart device to be lower than the lifting device, which would prevent the material cart device from accurately docking with the lifting device.

[0058] Optionally, the material cart device further includes a second roller fixing seat 212 and a second roller shaft 213. The second roller fixing seat 212 is fixedly connected to the fixed base plate 201. Both ends of the second roller shaft 213 are fixedly connected to the second roller fixing seat 212. The second roller 211 is sleeved on the second roller shaft 213 and rotatably connected to the second roller shaft 213, thereby realizing the rotatable connection between the second roller 211 and the fixed base plate 201.

[0059] Furthermore, the number of second rollers 211 is at least four, and the at least four second rollers 211 are evenly distributed on both sides of the fixed base plate 201. The at least four second rollers 211 ensure that the material cart device can be positioned, further improving the accuracy of the vertical docking between the material cart device and the lifting device. In this embodiment, the number of second rollers 211 is eight. In other embodiments, the number of second rollers 211 can be four, seven, or ten, etc.

[0060] Optionally, the lifting device further includes a sensor, a controller, and a lifting drive assembly 303. A third through hole 214 is provided on the lifting plate 202, located at the edge of the guide shaft 203. The sensor can detect whether a material tray 100 is fitted on the guide shaft 203 through the third through hole 214. The drive end of the lifting drive assembly 303 is connected to the insert plate 301, and the lifting drive assembly 303 can drive the insert plate 301 to rise and fall. Both the sensor and the lifting drive assembly 303 are connected to the controller via signals. When the sensor detects that no material tray 100 is fitted on the guide shaft 203, the sensor transmits the signal of no material tray 100 to the controller, and the controller controls the lifting assembly to drive the insert plate 301 to fall. When the sensor detects that a material tray 100 is fitted on the guide shaft 203, the sensor transmits the signal of detecting the material tray 100 to the controller, and the controller controls the lifting assembly to drive the insert plate 301 to rise.

[0061] Furthermore, the lifting drive assembly 303 can be an electric telescopic rod or a reciprocating cylinder, etc. For example, when the lifting drive assembly 303 is a reciprocating cylinder, the fixed end of the reciprocating cylinder is fixedly connected to the lifting bracket 302, and the reciprocating cylinder is signal-connected to the controller, and the controller controls the drive end of the reciprocating cylinder to move back and forth.

[0062] In this embodiment, the sensor is a through-beam sensor, which includes a transmitter and a receiver. The transmitter's emitter head and the receiver are angled together and both face the third through-hole 214. Both the transmitter and receiver are located on the side of the insert plate 301 facing the lifting plate 202. The lower surface of the tray 100 is coated with a reflective layer. When the light beam emitted by the transmitter can pass through the third through-hole 214, be reflected by the reflective layer of the tray 100, and reach the receiver, it indicates that the tray 100 is fitted on the guide shaft 203. When the receiver does not receive the light beam emitted by the transmitter, it indicates that the tray 100 is not fitted on the guide shaft 203. In other embodiments, the sensor is a capacitive sensor. When there is a tray 100 above the third through-hole 214, the dielectric constant between the tray 100 and the electrodes of the capacitive sensor changes, causing a change in capacitance. The capacitive sensor detects this capacitance change and converts it into an electrical signal output. When there is no tray 100 above the third through-hole 214, the capacitive sensor forms a relatively stable capacitance value with the surrounding environment. In another embodiment, the sensor is a laser sensor, with the laser sensor's emitting head facing the third through hole 214 so that the laser beam emitted by the laser sensor passes through the third through hole 214. When there is a material tray 100 above the third through hole 214, the laser beam will be reflected or scattered when it encounters the material tray 100, and the laser sensor can detect the reflected or scattered laser signal. When there is no material tray 100 above the third through hole 214, the laser sensor cannot detect the reflected or scattered laser signal.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A buggy device for transporting a pallet, characterized by, The trolley device comprises: a fixed bottom plate (201); a lifting plate (202) located on the upper side of the fixed bottom plate (201); a plurality of guide shafts (203) mounted on the fixed bottom plate (201), the lifting plate (202) being sleeved on the guide shafts (203) and being capable of reciprocating along the axial direction of the guide shafts (203), and the material tray (100) being movably sleeved on the guide shafts (203) and being capable of being placed on the lifting plate (202).

2. The buggy device of claim 1, wherein, The guide shafts (203) are uniformly distributed on the surface of the lifting plate (202).

3. The buggy device of claim 1, wherein, The trolley device further comprises linear bearings (205) sleeved on the guide shafts (203) and fixedly connected to the side of the lifting plate (202) facing the fixed bottom plate (201).

4. The buggy device of claim 3, wherein, The trolley device further comprises a limiting piece (206) having a height not less than that of the linear bearings (205), the limiting piece (206) being fixed to the side of the fixed bottom plate (201) facing the lifting plate (202) or being mounted on the side of the lifting plate (202) facing the fixed bottom plate (201).

5. The buggy device of any one of claims 1-4, wherein, The trolley device further comprises a guide head (207) mounted on the top end of the guide shaft (203), the lifting plate (202) being provided with a first through hole through which the guide shaft (203) passes, and the material tray (100) being provided with a second through hole through which the material tray (100) is sleeved on the guide shaft (203), the diameter of the guide head (207) being greater than the diameter of the first through hole and less than the diameter of the second through hole.

6. The buggy device of any one of claims 1-4, wherein, The trolley device further comprises a caster (208) located on the lower side of the fixed bottom plate (201) and rotatably connected to the fixed bottom plate (201).

7. A loading and unloading apparatus, characterized by, The trolley device comprises a lifting device and any one of the trolley devices according to claims 1-6, the lifting device comprising a plug-in plate (301) and a lifting support (302), the plug-in plate (301) being slidably connected to the lifting support (302) in the vertical direction, the plug-in plate (301) being capable of being supported on the bottom of the lifting plate (202) and driving the lifting plate (202) to reciprocate in the vertical direction.

8. The feeding and discharging apparatus according to claim 7, characterized in that, The lifting device further comprises a first guide connected with the lifting support (302), the first guide extends in the horizontal direction, the trolley device further comprises a first roller (209) structure, the first roller (209) structure comprises a first roller (209), the first roller (209) is rotationally connected with the fixed bottom plate (201), the axial direction of the first roller (209) is perpendicular to the horizontal plane, and the first roller (209) can roll on the side wall of the first guide.

9. The feeding and discharging apparatus according to claim 7, characterized in that, The lifting device further comprises a second guide, the second guide is arranged at an angle with the horizontal plane, the highest part of the second guide is connected with the lifting support (302), and the trolley device further comprises a second roller (211), the second roller (211) is rotationally connected to the lower side of the fixed bottom plate (201), the axial direction of the second roller (211) is parallel to the horizontal plane, and the second roller (211) can roll on the upper surface of the second guide.

10. The feeding and discharging apparatus according to claim 7, characterized in that, The lifting device further comprises a sensor and a lifting driving assembly (303), a third through hole (214) is formed in the lifting plate (202), the third through hole (214) is located at the edge of the guide shaft (203), the sensor can detect whether the tray (100) is sleeved on the guide shaft (203) through the third through hole (214), and the driving end of the lifting driving assembly (303) is connected with the plug-in plate (301). The lifting driving assembly (303) can drive the plug-in plate (301) to lift.

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