Conveying device used between working layers

Abstract

The utility model provides a conveying device used between working layers, the conveying device comprises a lifting platform, a supporting frame and a grabbing mechanism, the supporting frame is installed on the lifting platform, and the grabbing mechanism is arranged in the supporting frame; the grabbing mechanism can grab the loading basket and stretch out and draw back in the supporting frame, and the loading basket can be conveyed between the working layers in cooperation with the lifting function of the lifting platform. The loading basket conveying device has the advantages that the loading basket is grabbed through the grabbing mechanism and is matched with the lifting platform to ascend and descend, and conveying of the loading basket between working layers can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit automated maintenance, in particular to a transport device used between working layers, and is particularly suitable for transporting between different working layers during maintenance of truck brake valves. Background Art

[0002] During the existing brake valve maintenance operation, the transportation of brake valves or disassembled parts of brake valves on the first and second floors of the maintenance workshop is carried out through conveyor lines, and the transportation method between the first and second floors is to configure a track connected to the conveyor line in the conveying device to realize the transportation of goods. This transportation method is mainly for the situation where both the upper and lower floors are conveyor lines. In addition, the transportation of brake valves during the maintenance operation is generally to store the disassembled parts in a special loading basket, and there are handles on both sides of the loading basket to facilitate workers to take the loading basket from the conveyor line.

[0003] In order to improve the intelligent level of the brake valve maintenance workshop, a transformation and upgrade is being carried out, and a large number of robotic arms and intelligent equipment are used for maintenance operations. In the intelligent transformation of the second-floor workshop, the second-floor workshop adopts an unmanned maintenance line. Since the original second-floor workshop uses a conveyor line for transportation, it occupies a large area and is not conducive to intelligent upgrading and transformation. Therefore, the original conveyor line is dismantled and AGV (automatic guided vehicle) is used to replace the original conveyor line for the transportation of loading baskets. The first-floor workshop still continues to use the conveyor line for the transportation of loading baskets, which also causes the original up and down transportation device between the working floors to fail to meet the current application needs, which is specifically manifested in the following aspects:

[0004] (1) The original device for transporting up and down between working layers is suitable for the operation mode where both the upper and lower working layers are conveyor lines, which is not compatible with AGV transportation;

[0005] (2) The original equipment for transporting materials between working floors had a low degree of automation and a low degree of automatic control during the transportation process, which could not meet the needs of unmanned maintenance operations on the second floor;

[0006] (3) The operation control accuracy of the original device for transporting up and down between working floors is low, and it is impossible to quickly pick up and lower the loading basket through linkage control, which cannot meet the production needs of efficient brake valve maintenance operations.

[0007] Therefore, it is necessary to study a transport device for use between working layers to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0008] The utility model provides a transport device for working layers, which can transport the loading basket between working layers by grabbing a loading basket through a grabbing mechanism and cooperating with a lifting platform for lifting, so as to effectively solve the above problems or alleviate the impact of the above problems.

[0009] The conveying device for working layers of the utility model may include a lifting platform, a supporting frame and a grabbing mechanism, wherein the supporting frame is installed on the lifting platform, and the grabbing mechanism is arranged in the supporting frame;

[0010] The grabbing mechanism can grab the loading basket and extend and retract in the supporting frame, and cooperate with the lifting function of the lifting platform to complete the transportation of the loading basket between working layers.

[0011] In one embodiment, the grabbing mechanism includes a guide rail and a slider, wherein the guide rail is fixed to the lower side of the upper frame of the support frame, and the slider is connected below the guide rail, and the slider can move along the length direction of the guide rail.

[0012] In one embodiment, the gripping mechanism further includes a lead screw arranged along the length direction of the guide rail and a nut fixed to the slider, the nut and the lead screw thread cooperate so that the lead screw can drive the slider to move along the guide rail.

[0013] In one embodiment, the gripping mechanism further comprises a servo motor fixed to the supporting frame, wherein the servo motor is located at one end of the lead screw, and an output end thereof is fixedly connected to the lead screw.

[0014] In one embodiment, two hooks are provided below the slider along its length direction, the two hooks have the same structure and opening direction, and the distance between the two hooks is consistent with the distance between the two handles of the loading basket.

[0015] In one embodiment, the transport device further includes a guide mechanism, which includes a plurality of vertically arranged guide rods, and the guide rods are vertically penetrated through the table top of the lifting platform, and can guide the lifting and lowering of the lifting platform.

[0016] In one embodiment, the guide mechanism is provided with a limit switch corresponding to the conveying port between the working layers, and the limit switch can limit the lifting position of the lifting platform.

[0017] In one embodiment, two support blocks located under the support frame are fixedly provided on the lifting platform, the two support blocks are arranged in parallel, and their end faces are in the same plane as the end face of the lifting platform, and the support blocks can resist the movement of the loading basket.

[0018] In one embodiment, the transport device further comprises a distance sensor fixed to the lifting platform, wherein the distance sensor is located between the two support blocks, and the distance sensor is used to identify the distance between the loading basket and the end surface of the lifting platform.

[0019] In one embodiment, the transport device further comprises a visual sensor fixed above the support frame, and the visual sensor is used to identify the type of parts loaded in the loading basket.

[0020] The utility model provides a conveying device for working layers, which has at least the following beneficial effects compared with the prior art:

[0021] The utility model uses a grabbing mechanism to grab the loading basket and telescopically move relative to the support frame to pick up and place it. The loading basket is lifted and lowered in coordination with the lifting of the lifting platform, so that the loading basket can be transported between working layers. In this way, the transporting device can realize the automatic transport of the loading basket between working layers in coordination with the automatic control system, and the transporting device can be used for the transport between different working layers of truck brake valve maintenance, where the lower layer is a conveyor line and the upper layer is an AGV. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the conveying device of an embodiment of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram corresponding to the conveying device and the conveying line of the embodiment of the utility model;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the conveying device and the AGV corresponding to the embodiment of the utility model;

[0026] Figure 4 This is a first position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0027] Figure 5 is a second position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0028] Figure 6 It is a third position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0029] Figure 7 It is a fourth position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0030] Figure 8 It is a fifth position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0031] Fig. 9 It is a sixth position diagram of the conveying device of the embodiment of the utility model grabbing the loading basket from the conveyor line;

[0032] Fig.10 It is a seventh position diagram of the transport device of the embodiment of the utility model placing the loading basket on the AGV;

[0033] Fig.11 This is a diagram showing the eighth position of the transport device of the embodiment of the utility model placing the loading basket on the AGV;

[0034] Fig.12 This is a ninth position diagram of the transport device of the embodiment of the utility model placing the loading basket on the AGV;

[0035] Fig.13 It is a tenth position diagram of the transport device of the embodiment of the utility model placing the loading basket on the AGV;

[0036] Fig.14 This is a diagram showing the eleventh position of the transport device of the embodiment of the utility model placing the loading basket on the AGV;

[0037] Fig.15 This is a diagram showing the twelfth position of the transport device of the embodiment of the utility model placing the loading basket on the AGV.

[0038] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0039] Reference numerals:

[0040] 1-lifting platform, 2-support frame, 3-grabbing mechanism, 4-guide rail, 5-slider, 6-screw, 7-nut, 8-servo motor, 9-hook, 10-guide rod, 11-support block, 12-distance sensor, 13-vision sensor, 14-loading basket, 15-conveyor line, 16-AGV. DETAILED DESCRIPTION

[0041] The utility model will be further described below in conjunction with the accompanying drawings.

[0042] like Figures 1 to 3 As shown, the conveying device for working layers of the utility model may include a lifting platform 1, a supporting frame 2 and a grabbing mechanism 3, wherein the supporting frame 2 is installed on the lifting platform 1, and the grabbing mechanism 3 is arranged in the supporting frame 2;

[0043] The grabbing mechanism 3 can grab the loading basket 14 and extend and retract in the supporting frame 2 , and cooperate with the lifting function of the lifting platform 1 to complete the transportation of the loading basket 14 between working floors.

[0044] Specifically, the conveying device for working layers of the utility model aims to provide an efficient, stable and easy-to-operate material conveying solution, especially for multi-layer working environments (such as factories, workshops, warehouses, etc.), to realize the vertical conveying of the loading basket 14 and the materials therein between working layers. The conveying device completes the conveying work through the cooperation and collaboration between the lifting platform 1, the support frame 2 and the grabbing mechanism 3.

[0045] The lifting platform 1 is the main part of the conveying device, which can carry the support frame 2 and the grabbing mechanism 3 (which may include the grabbed loading basket 14) to move in the vertical direction. The lifting platform 1 can be driven by electric, hydraulic or pneumatic means to ensure smooth and accurate lifting.

[0046] The support frame 2 is installed on the lifting platform 1 to fix and support the grabbing mechanism 3. The design of the support frame 2 needs to take into account strength and stability to ensure that it will not be deformed or shaken due to external factors during transportation.

[0047] The grabbing mechanism 3 is a key part of the transport device, which is mainly responsible for grabbing and releasing the loading basket 14. The grabbing mechanism 3 can be driven mechanically, electrically or pneumatically to ensure that the task can be effectively performed under different working conditions. The grabbing mechanism 3 is arranged in the support frame 2 and can be retracted in the support frame 2 to facilitate grabbing the loading basket 14 into the support frame 2 or moving it out of the support frame 2. In the process of grabbing and releasing the loading basket 14, the grabbing mechanism 3 needs to have sufficient grabbing force and precision to ensure the stability and safety of the operation.

[0048] During the specific operation process, the conveying device controls the lifting function of the lifting platform 1 to be lifted to the height of the target working layer, aligned with the conveyor line 15 or AGV16, and extends the support frame 2 through the grasping mechanism 3 to accurately grasp the loading basket 14 on the conveyor line 15 or AGV16. Then the grasping mechanism 3 retracts and returns to the support frame 2 with the loading basket 14, and then controls the lifting platform 1 to rise or descend to another target working layer, and then performs the above operation in reverse to place the loading basket 14 on the corresponding conveyor line 15 or AGV16.

[0049] In general, the conveying device for working layers of the utility model grasps the loading basket 14 through the grasping mechanism 3 and telescopically moves relative to the supporting frame 2 to pick up and place, and the loading basket 14 is raised and lowered in coordination with the lifting platform 1, so as to realize the conveying of the loading basket 14 between working layers. In this way, the conveying device can realize the automatic conveying of the loading basket 14 between working layers in coordination with the automatic control system, and the conveying device can be applied to the conveying between different working layers of the truck brake valve inspection, where the lower layer is the conveying line 15 and the upper layer is the AGV 16.

[0050] In one example, the grabbing mechanism 3 includes a guide rail 4 and a slider 5 . The guide rail 4 is fixed to the lower side of the upper frame of the support frame 2 . The slider 5 is connected below the guide rail 4 , and the slider 5 can move along the length direction of the guide rail 4 .

[0051] Specifically, the guide rail 4 is a linear guide rail 4, fixed to the lower side of the upper frame of the support frame 2, that is, the grabbing mechanism 3 is installed at the top position in the support frame 2 through the guide rail 4; the slider 5 is connected to the bottom of the guide rail 4 and can move along the length direction of the guide rail 4, that is, the movement of the slider 5 along the guide rail 4 can realize the grabbing mechanism 3 to be extended and retracted in the support frame 2. It should be noted that the length direction of the guide rail 4 is consistent with the transportation direction of the conveyor line 15 or AGV 16 of the corresponding working layer.

[0052] In one example, the gripping mechanism 3 further includes a lead screw 6 arranged along the length direction of the guide rail 4 and a nut 7 fixed to the slider 5 . The nut 7 is threadedly engaged with the lead screw 6 , so that the lead screw 6 can drive the slider 5 to move along the guide rail 4 .

[0053] Specifically, the lead screw 6 is arranged along the length direction of the guide rail 4 and can rotate around its own axis; the nut 7 is fixed on the slider 5, and the nut 7 is threadedly matched with the lead screw 6. The rotation of the lead screw 6 can drive the nut 7 to move along the length direction of the lead screw 6, so that the slider 5 fixed to the nut 7 moves along the length direction of the guide rail 4.

[0054] Furthermore, the screw 6 is a ball screw, and the nut 7 can be a ball nut.

[0055] In one example, the gripping mechanism 3 further includes a servo motor 8 fixed to the support frame 2, the servo motor 8 is located at one end of the lead screw 6, and its output end is fixedly connected to the lead screw 6. The servo motor 8 is a power component of the gripping mechanism 3, and the lead screw 6 and the output end of the servo motor 8 can be connected and fixed through a coupling. The servo motor 8 provides a rotational driving force for the rotation of the lead screw 6, and the nut 7 is threadedly engaged with the lead screw 6, so as to realize the movement of the slider 5 along the length direction of the guide rail 4.

[0056] In one example, two hooks 9 are provided below the slider 5 along its length direction. The two hooks 9 have the same structure and opening direction, and the distance between the two hooks 9 is consistent with the distance between the two handles of the loading basket 14 .

[0057] Specifically, the slider 5 is in the shape of a long strip, one end of which is fixedly provided with a nut 7 that cooperates with the lead screw 6 to realize the moving function, and the other end is provided with a hook 9 for grabbing the loading basket 14. The hook 9 is fixedly connected to the bottom of the slider 5, and the number of the hooks 9 is two. The structure and opening direction of the two hooks 9 are the same, and the distance between the two hooks 9 is consistent with the distance between the two handles of the loading basket 14, so that the two hooks 9 move synchronously with the movement of the slider 5, so as to be able to hook or detach from the two handles of the loading basket 14 at the same time, so as to realize the grabbing or releasing of the loading basket 14.

[0058] It should be noted that the grasping mechanism 3 also includes an encoder and a controller (not shown in the drawings) for translational motion control. The encoder can feedback the rotational position information of the servo motor 8, and the controller can accurately adjust the moving position of the grasping mechanism 3 through the feedback signal of the encoder.

[0059] It should also be noted that the grabbing mechanism 3 of the above embodiment is mainly suitable for valve maintenance factories that use loading baskets 14 for transportation. The transport device can adaptably adopt different grabbing mechanisms 3 to be used in different types of workshops or factories. For example, the grabbing mechanism 3 can be a manipulator. By adopting different types of manipulators, it is possible to realize automatic loading and unloading of different types of materials, and to realize fast and accurate grabbing and placement of materials, thereby completing transportation between working layers.

[0060] In one example, the transport device further includes a guide mechanism, which includes a plurality of vertically erected guide rods 10 , the guide rods 10 vertically penetrate the table surface of the lifting platform 1 , and can guide the lifting and lowering of the lifting platform 1 .

[0061] Furthermore, the table top of the lifting platform 1 is rectangular, and the guide mechanism includes four guide rods 10, which are respectively arranged at the four corners of the lifting platform 1, so as to guide the vertical lifting of the lifting platform 1 and improve the operation stability of the lifting platform 1.

[0062] It should be noted that the lifting platform 1 should also be configured with corresponding drive motors, encoders and controllers to facilitate precise control during the lifting process.

[0063] In one example, the guide mechanism is provided with a limit switch (not shown in the drawings) at the transport port between the working layers, and the limit switch can limit the lifting position of the lifting platform 1. The limit switch is a sensor configuration for the lifting platform 1 to accurately control the lifting action, so that the lifting platform 1 can cooperate with the grabbing mechanism 3 to achieve centimeter-level displacement control in the picking action of the loading basket 14, thereby facilitating the lifting platform 1 to quickly and accurately achieve a small lifting in the grabbing and placing action of the loading basket 14.

[0064] In one example, two support blocks 11 located under the support frame 2 are fixedly provided on the lifting platform 1. The two support blocks 11 are arranged in parallel, and their end faces are in the same plane as the end face of the lifting platform 1. The support blocks 11 can resist the movement of the loading basket 14. That is, the conveyor line 15 or AGV 16 conveys the loading basket 14 to the end face of the lifting platform 1. The upper surface of the support block 11 on the lifting platform 1 is higher than the table of the conveyor line 15 or AGV 16, which can prevent the loading basket 14 from moving further and limit it to its end face position.

[0065] In one example, the transport device further includes a distance sensor 12 fixed to the lifting platform 1, the distance sensor 12 is located between the two support blocks 11, and the distance sensor 12 is used to identify the distance between the loading basket 14 and the end face of the lifting platform 1. The distance sensor 12 can help the grasping mechanism 3 determine how far it needs to move forward to meet the grasping action requirements, and can also determine whether the position of the conveyor line 15 or AGV 16 transporting the loading basket 14 is accurate. When it is detected that the distance between the loading basket 14 and the end face of the lifting platform 1 is minimum and stable, the transport device can start to transport the loading basket 14 between working layers.

[0066] In one example, the transport device further includes a visual sensor 13 fixed above the support frame 2, and the visual sensor 13 is used to identify the type of parts loaded in the loading basket 14. The visual sensor 13 can help the grasping mechanism 3 determine whether the loading basket 14 is placed in a manner that allows grasping, and determine the type of parts in the loading basket 14, so as to help it select an action mode that matches the weight of the loading basket 14, so as to improve the operating efficiency of the transport process.

[0067] It should be noted that the transporting device also includes an automated control system (not shown in the accompanying drawings), which is electrically connected to the components of the lifting platform 1 and the gripping mechanism 3, respectively, and can accurately control the components of the lifting platform 1 and the gripping mechanism 3 to perform corresponding actions to complete the transport operation of the loading basket 14.

[0068] In order to better understand the present invention, the following is a further description of the transportation process of the conveying device for truck brake valve maintenance between different working layers (the lower layer is the conveying line 15, and the upper layer is the AGV16 for transportation) in conjunction with the accompanying drawings.

[0069] Grab the loading basket 14 from the lower conveyor line 15: the lifting platform 1 is aligned with the lower conveyor line 15, and the lower conveyor line 15 conveys the loading basket 14 to the end of the lifting platform 1. The support block 11 on the lifting platform 1 is higher than the conveyor line 15, which can block the movement of the loading basket 14; when the distance sensor 12 detects that the loading basket 14 is in place, the visual sensor 13 identifies the loading type, and the automatic control system selects the corresponding action mode according to the type of parts in the loading basket 14. At this time, the grabbing mechanism 3 is in the first position (such as Figure 4 Then, the gripping mechanism 3 is extended to the second position (such as Figure 5 ), the lifting platform 1 descends to a corresponding preset height to a third position (such as Figure 6 ), the grasping mechanism 3 is extended again to the fourth position (such as Figure 7 ), the hook 9 hooks the handle on the loading basket 14, and the lifting platform 1 rises to the corresponding preset height to the fifth position (such as Figure 8 ), the loading basket 14 is lifted, and finally the grabbing mechanism 3 with the loading basket 14 is retracted to the sixth position (such as Fig. 9 ).

[0070] Place the loading basket 14 on the upper AGV 16: When the grabbing mechanism 3 is retracted into place under the drive of the servo motor 8, the distance sensor 12 and the visual sensor 13 jointly determine that the loading basket 14 has been grabbed, and the lifting platform 1 rises to the seventh position (such as Fig.10 ) and align with the upper AGV 16. AGV 16 runs along a specific path to the docking position. After the distance sensor 12 on the lifting platform 1 detects that AGV 16 is in place, the visual sensor 13 identifies the type of AGV 16 and whether AGV 16 is in an empty state, and determines whether the loading basket 14 transfer operation requirements are met. After the operation requirements are met, the loading basket 14 transfer operation is performed. The grabbing mechanism 3 extends to the eighth position (such as 10) with the loading basket 14 driven by the servo motor 8. Fig.11 ), the lifting platform 1 descends to the corresponding preset height to the ninth position (such as Fig.12 ), the loading basket 14 is placed on the AGV 16, and the grabbing mechanism 3 is retracted to the tenth position (such as Fig.13 ), the lifting platform 1 rises to the corresponding preset height to the eleventh position (such as Fig.14 ), the grasping mechanism 3 is retracted to the twelfth position (such as Fig.15 ). When the grabbing mechanism 3 is retracted to the position driven by the servo motor 8, the distance sensor 12 and the visual sensor 13 jointly determine that the loading basket 14 has been placed.

[0071] The lifting platform 1 can be lowered to a position aligned with the lower conveying line 15 again, and the above steps are repeated to realize the transportation operation between the lower conveying line 15 and the upper AGV 16.

[0072] In summary, the beneficial effects of the conveying device of the utility model may include:

[0073] (1) The conveying device uses a lifting platform for lifting, and the grabbing mechanism uses a servo drive + linear drive combination of a ball screw and a linear guide pair for horizontal movement, thereby forming a linkage to realize the grabbing and placing of the loading basket. The action process requires high control accuracy and has the functions of visual recognition and automatic operation.

[0074] (2) The transport device has the function of grabbing and placing goods, as well as the function of transporting goods between upper and lower floors. The transport device can achieve the picking up and placing of specific goods by slightly raising and lowering the lifting platform and moving the grabbing mechanism forward and backward, and can achieve automatic control of the transportation of goods between upper and lower floors through specific sensors and control systems.

[0075] (3) The transport device is designed for the application scenarios where the valve maintenance line is transported by the lower conveyor line and the upper conveyor line is transported by AGV, and the valves are loaded by a loading basket structure. The forward and backward movement of the gripping mechanism and the small lifting and lowering movement of the lifting platform can realize the actions of picking up, recovering, pushing out and placing the loading basket structure.

[0076] (4) The loading and unloading of goods on the conveying device are completed automatically, and the goods can be quickly loaded, lifted and unloaded; the conveying device can be equipped with different grabbing mechanisms according to different types of goods, and there is no need to add complex mechanical transmission devices. Through a simple grabbing mechanism and a small lifting of the lifting platform, the goods can be effectively grabbed and placed.

[0077] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A conveying device for working layers, characterized in that: The transport device comprises a lifting platform, a support frame and a grabbing mechanism, wherein the support frame is mounted on the lifting platform and the grabbing mechanism is arranged in the support frame; The grabbing mechanism can grab the loading basket and extend and retract in the supporting frame, and cooperate with the lifting function of the lifting platform to complete the transportation of the loading basket between working layers.

2. The conveying device for working layers according to claim 1, characterized in that: The grabbing mechanism comprises a guide rail and a slider, wherein the guide rail is fixed to the lower side of the upper frame of the support frame, the slider is connected below the guide rail, and the slider can move along the length direction of the guide rail.

3. The conveying device for working layers according to claim 2, characterized in that: The gripping mechanism further comprises a lead screw arranged along the length direction of the guide rail and a nut fixed to the slider, wherein the nut is threadably matched with the lead screw so that the lead screw can drive the slider to move along the guide rail.

4. The conveying device for working layers according to claim 3, characterized in that: The grabbing mechanism further comprises a servo motor fixed to the supporting frame. The servo motor is located at one end of the lead screw, and an output end of the servo motor is fixedly connected to the lead screw.

5. The conveying device for working layers according to claim 2, characterized in that: Two hooks are provided below the sliding block along its length direction. The two hooks have the same structure and opening direction, and the distance between the two hooks is consistent with the distance between the two handles of the loading basket.

6. The conveying device for working layers according to any one of claims 1 to 5, characterized in that: The transport device further comprises a guide mechanism, which comprises a plurality of vertically arranged guide rods, wherein the guide rods are vertically penetrated through the table surface of the lifting platform and can guide the lifting and lowering of the lifting platform.

7. The conveying device for working layers according to claim 6, characterized in that: The guide mechanism is provided with a limit switch corresponding to the conveying port between the working layers, and the limit switch can limit the lifting position of the lifting platform.

8. The conveying device for working layers according to any one of claims 1 to 5, characterized in that: The lifting platform is fixedly provided with two support blocks located under the support frame. The two support blocks are arranged in parallel, and their end faces are in the same plane as the end face of the lifting platform. The support blocks can resist the movement of the loading basket.

9. The conveying device for working layers according to claim 8, characterized in that: The transport device further comprises a distance sensor fixed to the lifting platform, wherein the distance sensor is located between the two support blocks, and the distance sensor is used to identify the distance between the loading basket and the end surface of the lifting platform.

10. The conveying device for working layers according to any one of claims 1 to 5, characterized in that: The transport device further comprises a visual sensor fixed above the support frame, and the visual sensor is used to identify the type of parts loaded in the loading basket.

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