A bidirectional conveying elevator with mechanical limiting device

Abstract

The utility model belongs to tobacco logistics and storage equipment technical field discloses a two -way conveying elevator with mechanical positioner, including lifting platform and positioner, the lifting path of along the lifting platform is set in order from top to bottom and goes out warehouse station, first cache station and second cache station, the lifting platform respectively in warehouse station executes the feeding along second direction, executes the discharge along first direction in first cache station, executes the discharge along second direction in second cache station, the positioner includes the baffle of rotation installation on the lifting platform, and prevents the lifting platform at the discharge along second direction in warehouse station and first cache station place execution through the rotation of baffle. In the utility model, through the rotatable baffle of additional, make the lifting platform under the premise of keeping two -way conveying function, realize the accurate parking of piece tobacco conveying on the lifting platform in the process of taking and placing goods, thereby effectively improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of tobacco logistics and warehousing equipment, specifically relating to a bidirectional conveyor and elevator with a mechanical limiting device. Background Technology

[0002] A multi-pass warehouse for tobacco logistics mainly consists of shelving, inbound elevators, multi-level shuttle cars, outbound elevators, and an operation and control system. Multi-pass warehouses are primarily used for storing cigarette cartons and typically have multiple levels of shelving. After the multi-level shuttle cars retrieve and deliver the cartons of cigarettes to the outbound station, the outbound elevators transport them from different outbound stations to different target buffer stations. During this process, the elevators need to have bidirectional transport capabilities.

[0003] Currently, elevators generally use photoelectric sensing during the conveying process. When the photoelectric sensor is triggered when the cigarette pack reaches its designated position, the electric roller stops moving, thus controlling the cigarette pack to stop centered within the elevator station. However, because some cigarette packs have smooth surfaces, they can easily continue to slide when stopped solely by photoelectric sensing, causing the cigarette pack to exceed the edge of the elevator, triggering the limit alarm, and resulting in reduced efficiency. Utility Model Content

[0004] In view of this, in order to solve the problems mentioned in the background art, the purpose of this utility model is to provide a bidirectional conveying and lifting machine with a mechanical limiting device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A bidirectional conveyor elevator with a mechanical limiting device includes:

[0007] The lifting platform is provided with an outbound station, a first buffer station, and a second buffer station arranged sequentially from top to bottom along its lifting path. The lifting platform performs feeding in the second direction at the outbound station, discharging in the first direction at the first buffer station, and discharging in the second direction at the second buffer station.

[0008] A limiting device; the limiting device includes a baffle that is rotatably installed on the lifting platform, and the rotation of the baffle prevents the lifting platform from performing material discharge in the second direction at the outbound station and the first buffer station.

[0009] Preferably, the limiting device further includes a mounting plate fixedly installed on the lifting platform, and a first limiting post is fixed on the mounting plate to limit the baffle at a first angle. When the baffle rotates to the first angle, it prevents the lifting platform from discharging material in the second direction.

[0010] Preferably, the two ends of the baffle are a limiting end and a driving end, respectively. The driving end is fixedly connected to a counterweight block. When the baffle rotates to the first angle, the first limiting post abuts against the bottom of the driving end.

[0011] Preferably, the limiting device further includes a limiting frame fixedly installed at the second buffer station, and the limiting frame limits the baffle to rotate to the second angle, allowing the lifting platform to discharge material along the second direction.

[0012] Preferably, a second limiting post is also fixed on the mounting plate. When the baffle rotates to the second angle, the second limiting post and the limiting frame abut against the bottom of the limiting end and the driving end, respectively.

[0013] Preferably, an outbound platform is provided at the outbound station, a first buffer platform is provided at the first buffer station, and a second buffer platform is provided at the second buffer station. The outbound platform, the first buffer platform, the second buffer platform, and the lifting platform all include a frame and multiple conveying rollers rotatably installed within the frame.

[0014] Preferably, the conveying roller of the lifting platform is a driven roller, and the conveying rollers of the outbound platform, the first buffer platform and the second buffer platform are all driving rollers. A transition transmission system is connected between the driving roller and the driven roller, and the transition transmission system includes a driving gear, a driven gear and a cylinder. The driving gear rotates with the driving roller, and the cylinder drives the driven gear to move axially between a clearance position and a meshing position. When the driven gear moves to the meshing position, the driven gear meshes with the driving gear, and the driven roller rotates with the driven gear.

[0015] Preferably, the transition transmission system further includes a driven shaft that coaxially connects the driven gear and the driven roller, and the driven shaft includes a frustum drive shaft and a friction drive shaft sleeve sleeved outside the frustum drive shaft. The frustum drive shaft is coaxially fixed with the driven roller, and the friction drive shaft sleeve is coaxially fixed with the driven gear.

[0016] Preferably, the cylinder is fixedly installed on the lifting platform, and a movable plate is fixed to the drive extension end of the cylinder, and the friction transmission shaft sleeve is rotatably installed on the movable plate.

[0017] Preferably, the transition transmission system further includes a drive shaft coaxially connecting the drive gear and the drive roller. The drive shaft includes a central shaft and a sliding sleeve sleeved outside the central shaft. The central shaft and the drive roller are coaxially fixed. The sliding sleeve is fixed through and at the center position of the drive gear. A spring is connected between the central shaft and the sliding sleeve. The moving plate also includes an extension that can abut against the outer end of the sliding sleeve.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] In this invention, by adding a rotatable baffle, the lifting platform can accurately stop the cigarette packs on the lifting platform during the picking and placing process while maintaining the bidirectional conveying function. This avoids the edge alarm and cigarette damage that occur when the traditional method of relying solely on photoelectric control to stop the cigarette packs, thereby effectively improving work efficiency.

[0020] In this invention, the rotation angle of the baffle is adjusted and limited by the cooperation of counterweights and limiting frames. Specifically, at the outbound station and the first buffer station, the counterweights raise the limiting end of the baffle, thereby preventing the lifting platform from discharging material along the second direction at these stations. At the second buffer station, the limiting frames support the counterweights, causing the limiting end of the baffle to descend, thus allowing the lifting platform to discharge material along the second direction. The overall structure automatically adjusts with the lifting platform's raising and lowering, requiring no additional drive, resulting in low modification costs and accurate positioning.

[0021] In this invention, a transition transmission system is provided between the driving roller and the driven roller to ensure that the lifting platform can only transport materials via the driving roller connected to it, thus guaranteeing accurate feeding of the cigarette packs. Specifically, the transition transmission system completes the transmission through a driving gear and a driven gear in a meshed state. The driving gear is adapted to a driving shaft that can elastically extend and retract, and the driven gear is adapted to a driven shaft that can be frictionally driven or disengaged, thereby effectively ensuring stable meshing and stable transmission between the driving gear and the driven gear. Attached Figure Description

[0022] Figure 1 This is one of the perspective views of this utility model;

[0023] Figure 2 This is a second perspective view of the present invention;

[0024] Figure 3 for Figure 1 Enlarged view of point A in the image;

[0025] Figure 4 for Figure 1 Enlarged view of point B in the image;

[0026] Figure 5 This is a top view of the present invention;

[0027] Figure 6 for Figure 5 Enlarged view of point C in the image;

[0028] Figure 7 This is a schematic diagram of the lifting platform in this utility model;

[0029] Figure 8 This is an exploded view of the structure of the drive gear and drive shaft in this utility model;

[0030] Figure 9 This is a cross-sectional view of the drive shaft in this utility model;

[0031] Figure 10 This is an exploded view of the driven gear and driven shaft in this utility model;

[0032] Figure 11 This is a cross-sectional view of the driven shaft in this utility model;

[0033] Figure 12 This is a schematic diagram of the limiting device in this utility model;

[0034] Figure 13 This is a schematic diagram of the assembly of the baffle and the mounting plate in this utility model;

[0035] In the diagram: Lifting platform-100; Frame-101; Conveying roller-102; Limiting device-200; Baffle-201; Mounting plate-202; First limiting post-203; Counterweight-204; Limiting frame-205; Second limiting post-206; Outbound platform-300; First buffer platform-400; Second buffer platform-500; Transition transmission system-600; Drive gear-610; Driven gear-620; Cylinder-630; Driven shaft-640; Frustum drive shaft-641; Friction drive bushing-642; Moving plate-650; Extension-651; Drive shaft-660; Central shaft-661; Sliding bushing-662; Spring-663. Detailed Implementation

[0036] To further understand the content of this utility model, a detailed description of it is provided in conjunction with the accompanying drawings and embodiments. The structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art; they are not intended to limit the implementation of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed herein. Similarly, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, the bidirectional conveyor elevator with mechanical limiting device provided by this utility model includes a lifting platform 100, a limiting device 200, an outgoing platform 300, a first buffer platform 400, and a second buffer platform 500. Specifically, the lifting platform 100 is vertically mounted on a vertical guide rail, so that the lifting platform 100 can move up and down along the vertical guide rail.

[0039] In one example, a detailed description of each structure is provided based on an outbound elevator: An outbound station, a first buffer station, and a second buffer station are sequentially arranged from top to bottom along the lifting path of the lifting platform 100. The outbound platform 300 is located at the outbound station. When the lifting platform 100 rises along the vertical guide rail to the outbound station, the outbound platform 300 discharges material towards the lifting platform 100 in a second direction. The first buffer platform 400 is located at the first buffer station. When the lifting platform 100 descends along the vertical guide rail to the first buffer station, the lifting platform 100 can discharge material towards the first buffer platform 400 in a first direction. The second buffer platform 500 is located at the second buffer station. When the lifting platform 100 descends along the vertical guide rail to the second buffer station, the lifting platform 100 can discharge material towards the second buffer platform 500 in a second direction. Specifically, the outbound station and the first buffer station are set on the same side of the vertical guide rail, and the first buffer station and the second buffer station are set on opposite sides of the vertical guide rail. The lifting platform 100 realizes bidirectional conveying of cigarettes at the first buffer station and the second buffer station respectively.

[0040] In another example, a detailed description of the structure is provided based on an outbound elevator: An inbound station, a first buffer station, and a second buffer station (not shown in the figure) are sequentially arranged from bottom to top along the lifting path of the lifting platform 100. The inbound station is equipped with an inbound platform, and the first and second buffer stations are respectively equipped with a first buffer platform 400 and a second buffer platform 500. When the lifting platform 100 descends along the vertical guide rail to the inbound station, the inbound station feeds material to the lifting platform 100; when the lifting platform 100 rises along the vertical guide rail to the first buffer station, the lifting platform 100 feeds material to the first buffer platform 400; when the lifting platform 100 rises along the vertical guide rail to the second buffer station, the lifting platform 100 feeds material to the second buffer platform 500. Specifically, the warehousing station and the first buffer station are set on the same side of the vertical guide rail, and the first buffer station and the second buffer station are set on opposite sides of the vertical guide rail. The lifting platform 100 realizes bidirectional conveying of cigarettes at the first buffer station and the second buffer station respectively.

[0041] It is worth noting that the outbound platform 300, the first buffer platform 400, the second buffer platform 500, and the lifting platform 100 all include a frame 101 and multiple conveying rollers 102 rotatably mounted within the frame 101. Therefore, the movement and conveying of cigarette packs can be achieved by using a motor to drive the conveying rollers 102 to rotate.

[0042] Continue to refer to Figure 1 and Figure 7As shown, the limiting device 200 includes a baffle 201 rotatably mounted on the lifting platform 100. Specifically, one end of the baffle 201 forms a limiting end, which can limit the movement of the lifting platform 100 when the baffle 201 rotates until the limiting end rises from the top of the lifting platform 100. For example, a micro motor capable of driving the baffle 201 to rotate is installed at the bottom of the lifting platform 100.

[0043] In the illustration of this utility model, based on an outbound elevator: the outbound platform 300 and the first buffer platform 400 are both located on the left side of the elevator platform 100, and the second buffer platform 500 is located on the right side of the elevator platform 100. Thus, the second direction is from left to right, and the first direction is from right to left. Based on this, a baffle 201 is placed on the right side of the elevator platform 100 to prevent the elevator platform 100 from discharging materials along the second direction at the outbound station and the first buffer station by rotating the baffle 201. Simultaneously, it allows the elevator platform 100 to discharge materials along the second direction at the second buffer station. This effectively avoids the problem of cigarettes exceeding the edge alarm and cigarette damage when they are conveyed to the elevator platform 100. It ensures that even if the conveying roller 102 on the elevator platform 100 does not stop rotating, the cigarettes will not exceed the edge of the elevator platform 100 along the second direction.

[0044] It is worth noting that the rotation point of the baffle 201 and the micro motor are arranged below the conveying roller 102 of the lifting platform 100, and the limiting end of the baffle 201 moves up and down in the gap between adjacent conveying rollers 102.

[0045] Example 2

[0046] like Figure 1 and Figure 2 As shown, the bidirectional conveyor elevator with mechanical limiting device provided by this utility model includes a lifting platform 100, a limiting device 200, an outgoing platform 300, a first buffer platform 400, and a second buffer platform 500. Specifically, the structures of the lifting platform 100, the outgoing platform 300, the first buffer platform 400, and the second buffer platform 500 are the same as those in Embodiment 1.

[0047] Continue to refer to Figure 1 and Figure 12As shown, the limiting device 200 includes a baffle 201, a mounting plate 202, and a limiting frame 205. Specifically, the mounting plate 202 has an L-shaped structure and is fixedly installed on the frame 101 of the lifting platform 100. The baffle 201 is rotatably installed on the mounting plate 202. The two ends of the baffle 201 are a limiting end and a driving end, respectively, forming an angle between the limiting end and the driving end between 120° and 180°. The rotation point of the baffle 201 is located at the connection between the limiting end and the driving end. The limiting frame 205 is fixedly installed at the second buffer station.

[0048] For example, to ensure the smooth rotation of the baffle 201, a counterweight 204 is bolted to the driving end of the baffle 201. This makes the weight of the driving end of the baffle 201 greater than the weight of the limiting end of the baffle 201. Therefore, under the action of gravity, the driving end of the baffle 201 will automatically fall, thereby driving the baffle 201 to rotate and causing the limiting end of the baffle 201 to rise, forming... Figure 13 The state shown is as follows. It is worth noting that a first limiting post 203 is fixed on the mounting plate 202 to limit the baffle 201 to a first angle. Specifically, when the baffle 201 rotates to the first angle, the first limiting post 203 abuts against the bottom of the driving end of the baffle 201, thereby ensuring that the limiting end of the baffle 201 extends out from the top of the lifting platform 100, thereby preventing the lifting platform 100 from performing material discharge in the second direction.

[0049] For example, a second limiting post 206 is also fixed on the mounting plate 202, when the limiting frame 205 is in the position... Figure 12 When the baffle 201 abuts against the bottom of the drive end, the baffle 201 is lifted by the limiting bracket 205, thereby driving the limiting end of the baffle 201 to descend until the bottom of the limiting end of the baffle 201 abuts against the second limiting post 206, thus completing the limitation of the rotation of the baffle 201. At this time, the limiting end of the baffle 201 rotates to below the lifting platform 100, thereby allowing the lifting platform 100 to perform material discharge in the second direction.

[0050] In summary, in this embodiment:

[0051] When the lifting platform 100 rises along the vertical guide rail to the outbound workstation, the baffle 201 and the mounting plate 202 rise with the lifting platform 100. At this time, the baffle 201 is no longer restricted by the limiting frame 205, and with the cooperation of the counterweight 204 and the first limiting post 203, the baffle 201 rotates to the position where... Figure 13 As shown in the first angle, at this angle, the limiting end of the baffle 201 extends from the top of the lifting platform 100; the outgoing platform 300 discharges material to the lifting platform 100 along the second direction, and the smoke from the parts conveyed to the lifting platform 100 is blocked by the limiting end of the baffle 201, which can effectively prevent the smoke from exceeding the edge alarm.

[0052] As the lifting platform 100 descends along the vertical guide rail, the baffle 201 remains... Figure 1 and Figure 13 As shown, the lifting platform 100 is prevented from discharging material along the second direction;

[0053] When the lifting platform 100 descends along the vertical guide rail to the first buffer station, the lifting platform 100 can discharge material to the first buffer platform 400 in the first direction, while the baffle 201 is used to block the lifting platform 100 from the misoperation of discharging material in the second direction.

[0054] When the lifting platform 100 descends along the vertical guide rail to the second buffer station, the bottom of the drive end of the baffle 201 gradually abuts against the limit frame 205, thereby driving the drive end of the baffle 201 to rise and the limit end to fall, so that the limit end of the baffle 201 rotates to below the lifting platform 100, at which time the lifting platform 100 is allowed to discharge material to the second buffer platform 500 along the second direction.

[0055] Example 3

[0056] like Figures 1-6 As shown, the bidirectional conveyor elevator with mechanical limiting device provided by this utility model includes a lifting platform 100, a limiting device 200, an outgoing platform 300, a first buffer platform 400, a second buffer platform 500, and a transition transmission system 600. Specifically, the structures of the lifting platform 100, the limiting device 200, the outgoing platform 300, the first buffer platform 400, and the second buffer platform 500 are all the same as those in Embodiment 2. It is worth noting that the conveying roller 102 of the lifting platform 100 is a driven roller, while the conveying rollers 102 of the outbound platform 300, the first buffer platform 400, and the second buffer platform 500 are all driving rollers. The transition transmission system 600 is used to realize the transmission between the driving roller and the driven roller. That is, the conveying roller 102 in the lifting platform 100 does not need to be equipped with an independent driving device. By using the transition transmission of the transition transmission system 600, the conveying linkage between the outbound platform 300 and the lifting platform 100, or between the first buffer platform 400 and the lifting platform 100, or between the second buffer platform 500 and the lifting platform 100 can be realized.

[0057] Continue to refer to Figure 3 , Figure 4 and Figure 6As shown, the transition transmission system 600 includes a drive gear 610, a driven gear 620, and a cylinder 630. Specifically, a drive gear 610 is provided on each of the outbound platform 300, the first buffer platform 400, and the second buffer platform 500. The drive gears 610 on the outbound platform 300 and the first buffer platform 400 are located on the right side, and the drive gear 610 on the second buffer platform 500 is located on the left side, ensuring that the drive gears 610 can rotate synchronously with the corresponding drive rollers. Driven gears 620 are provided on both the left and right sides of the lifting platform 100, ensuring that the driven gears 620 can rotate synchronously with the corresponding driven rollers, thereby enabling the lifting platform 100 to effectively achieve bidirectional conveying.

[0058] Continue to refer to Figure 3 and Figure 4 As shown, the cylinder 630 is fixedly mounted on the frame 101 of the lifting platform 100, and a movable plate 650 is fixed to the drive extension end of the cylinder 630. The cylinder 630 drives the driven gear 620 to move through the movable plate 650. The driven gears 620 on the left and right sides of the lifting platform 100 are respectively disposed at the left and right ends of the movable plate 650, so that the cylinder 630 can synchronously drive the driven gears 620 on the left and right sides.

[0059] For example, the driven gear 620 and the corresponding driven roller are coaxially connected via a driven shaft 640. Figure 8 and Figure 9 As shown, the driven shaft 640 includes a frustum drive shaft 641 and a friction drive shaft sleeve 642 sleeved outside the frustum drive shaft 641. The frustum drive shaft 641 is coaxially fixed with the driven roller, and the friction drive shaft sleeve 642 is coaxially fixed with the driven gear 620. The friction drive shaft sleeve 642 is rotatably mounted on the moving plate 650. Specifically, when the lifting platform 100 is raised along the vertical guide rail to the outbound station, the lifting platform 100 is located on one side of the outbound platform 300, and the cylinder 630 is in the extended state at this time. This causes the moving plate 650 to drive the friction drive shaft sleeve 642 and the driven gear 620 to move outward, and causes the driven gear 620 to form a... Figure 5 and Figure 6In the misaligned state shown, specifically in this state, the transition transmission system 600 is ensured not to interfere with the lifting and lowering movement of the lifting platform 100. When the outgoing platform 300 discharges material to the lifting platform 100 along the second direction, the starting cylinder 630 retracts, thereby driving the moving plate 650 closer to the lifting platform 100. This, in turn, drives the friction transmission shaft sleeve 642 and the driven gear 620 closer to the driving gear 610 until the driven gear 620 meshes with the driving gear 610. Then, the driven gear 620, driven shaft 640, and other structures drive the driven roller in the lifting platform 100 to rotate, thus completing the discharge of material from the outgoing platform 300 to the lifting platform 100 along the second direction. The conveying linkage principle between the first buffer platform 400 and the lifting platform 100, and between the second buffer platform 500 and the lifting platform 100, is the same.

[0060] It is worth noting that the diameter of the end of the frustum drive shaft 641 that is fixed to the driven roller is relatively large, and the friction drive shaft sleeve 642 is provided with a frustum hole that matches the inclined surface of the frustum drive shaft 641. The frustum drive shaft 641 and the friction drive shaft sleeve 642 achieve coaxial rotation transmission through contact friction.

[0061] As a further example, the drive gear 610 and the corresponding drive roller are coaxially connected via a drive shaft 660. Figure 10 and Figure 11 As shown, the drive shaft 660 includes a central shaft 661 and a sliding bushing 662 sleeved outside the central shaft 661. The central shaft 661 is coaxially fixed with the drive roller. The sliding bushing 662 is fixed through and fixed at the center position of the drive gear 610. A spring 663 is connected between the central shaft 661 and the sliding bushing 662. The moving plate 650 also includes an extension 651 that can abut against the outer end of the sliding bushing 662. Based on this, during the retraction of the starting cylinder 630 to drive the moving plate 650 closer to the lifting platform 100, when the driven gear 620 meshes with the driving gear 610, the extension 651 of the moving plate 650 just abuts against the outer end of the sliding sleeve 662, while the friction transmission sleeve 642 is not in close contact with the frustum transmission shaft 641. In this state, the cylinder 630 continues to retract, driving the friction transmission sleeve 642 to move on the frustum transmission shaft 641, so that the friction transmission sleeve 642 abuts tightly against the outside of the frustum transmission shaft 641, and the extension 651 of the moving plate 650 pushes the sliding sleeve 662 to slide outside the central shaft 661, compressing the spring 663. This effectively ensures the stable meshing of the driven gear 620 and the driving gear 610, and also ensures the stable transmission between the friction transmission sleeve 642 and the frustum transmission shaft 641. In the overall process, the driven gear 620 and the driving gear 610 first mesh and transmit power, and then the driven gear 620 and the frustum transmission shaft 641 achieve frictional transmission to effectively ensure the stable execution of the overall transmission process.

[0062] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A bidirectional conveying and lifting machine with a mechanical limiting device, characterized in that, include: Lifting platform (100); along the lifting path of the lifting platform (100), from top to bottom, an outbound station, a first buffer station and a second buffer station are set up in sequence. The lifting platform (100) performs feeding along the second direction at the outbound station, discharging along the first direction at the first buffer station and discharging along the second direction at the second buffer station. Limiting device (200); the limiting device (200) includes a baffle (201) rotatably mounted on the lifting platform (100), and the rotation of the baffle (201) prevents the lifting platform (100) from discharging material in the second direction at the outgoing station and the first buffer station.

2. The bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 1, characterized in that: The limiting device (200) further includes a mounting plate (202) fixedly installed on the lifting platform (100), and a first limiting post (203) fixed on the mounting plate (202) to limit the baffle (201) to a first angle. When the baffle (201) rotates to the first angle, it prevents the lifting platform (100) from discharging material along the second direction.

3. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 2, characterized in that: The two ends of the baffle (201) are a limiting end and a driving end, respectively. The driving end is fixedly connected to a counterweight (204), and when the baffle (201) rotates to the first angle, the first limiting post (203) abuts against the bottom of the driving end.

4. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 3, characterized in that: The limiting device (200) further includes a limiting frame (205) fixedly installed at the second buffer station, and the limiting frame (205) limits the baffle (201) to rotate to the second angle, allowing the lifting platform (100) to discharge material along the second direction.

5. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 4, characterized in that: A second limiting post (206) is also fixed on the mounting plate (202). When the baffle (201) rotates to the second angle, the second limiting post (206) and the limiting frame (205) abut against the bottom of the limiting end and the driving end, respectively.

6. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 1, characterized in that: An outbound platform (300) is set at the outbound station, a first buffer platform (400) is set at the first buffer station, and a second buffer platform (500) is set at the second buffer station. The outbound platform (300), the first buffer platform (400), the second buffer platform (500) and the lifting platform (100) all include a frame (101) and a plurality of conveying rollers (102) rotatably installed in the frame (101).

7. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 6, characterized in that: The conveying roller (102) of the lifting platform (100) is a driven roller, and the conveying roller (102) of the outbound platform (300), the first buffer platform (400) and the second buffer platform (500) are all driving rollers. A transition transmission system (600) is connected between the driving roller and the driven roller, and the transition transmission system (600) includes a driving gear (610), a driven gear (620) and a cylinder (630). The driving gear (610) rotates with the driving roller, and the cylinder (630) drives the driven gear (620) to move axially between the avoidance position and the engagement position. When the driven gear (620) moves to the engagement position, the driven gear (620) meshes with the driving gear (610), and the driven roller rotates with the driven gear (620).

8. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 7, characterized in that: The transition transmission system (600) further includes a driven shaft (640) that coaxially connects the driven gear (620) and the driven roller. The driven shaft (640) includes a frustum drive shaft (641) and a friction drive shaft sleeve (642) sleeved outside the frustum drive shaft (641). The frustum drive shaft (641) is coaxially fixed with the driven roller, and the friction drive shaft sleeve (642) is coaxially fixed with the driven gear (620).

9. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 8, characterized in that: The cylinder (630) is fixedly installed on the lifting platform (100), and a movable plate (650) is fixed to the drive extension end of the cylinder (630). The friction transmission shaft sleeve (642) is rotatably installed on the movable plate (650).

10. A bidirectional conveying and hoisting machine with a mechanical limiting device according to claim 9, characterized in that: The transition transmission system (600) further includes a drive shaft (660) that coaxially connects the drive gear (610) and the drive roller. The drive shaft (660) includes a central shaft (661) and a sliding bushing (662) sleeved outside the central shaft (661). The central shaft (661) is coaxially fixed with the drive roller. The sliding bushing (662) is fixed through and at the center position of the drive gear (610). A spring (663) is connected between the central shaft (661) and the sliding bushing (662). The moving plate (650) further includes an extension (651) that can abut against the outer end of the sliding bushing (662).

Images