Anti-toppling device for cargo carrying table of stacking machine

Abstract

According to the anti-toppling device for the cargo carrying table of the stacking machine, the cargos can be prevented from slipping while the cargos are actively clamped to prevent toppling, the stability and the boundary dimension of a stack are effectively maintained, the risk of over-limit alarming and parking is correspondingly reduced, and the warehouse in-out operation efficiency is improved. Comprising a clamping plate assembly vertically arranged along a cargo carrying table, a rotating assembly installed on one side of the cargo carrying table to be connected with the clamping plate assembly and drive the clamping plate assembly to reciprocate in the horizontal direction, and a driving assembly driving the rotating assembly to rotate in a reciprocating mode along the vertical center. When goods are carried on the goods carrying table, the driving device drives the rotating assembly to rotate around the vertical center of the rotating assembly and pushes out the clamping plate assemblies in the horizontal direction, and the two clamping plate assemblies are pushed out from one side to the center and get close to and limit the moving range of the goods at the same time.

Description

Technical Field

[0001] The present application belongs to the field of warehousing and logistics equipment, and specifically proposes a novel anti-dumping device for a cargo platform of a stacker to prevent cargo from dumping or falling due to inertia during rapid acceleration and deceleration of the stacker. Background Art

[0002] In the warehousing and logistics industry, stackers are common conveying equipment. For example, when entering and exiting a shelf warehouse, the stacker picks up the goods on the conveyor and places them on the loading platform, then transports them to the front of the designated cargo position, and finally transfers the goods from the loading platform to the shelf to complete a warehousing operation, while outbound operations are the opposite process. Since different goods have different packaging styles, the transportation process on the loading platform will also be different. For example, for ton-bag-style goods, during acceleration and deceleration, they are prone to sliding, package deformation, and even safety risks of falling off and tipping from a height due to the high center of gravity and inertia of the goods, which has a great impact on the stacker's efficiency in picking and placing.

[0003] In order to solve the problem of high-level bulk cargo slipping and tipping, the prior art usually installs a corresponding anti-tipping device on the cargo platform. For example, the following previously published Chinese patent application, application number CN202223089661.5, is named a cargo anti-tipping device for a double-column stacker cargo platform, which is arranged on both sides of the cargo on the cargo platform, including baffles, a mounting frame, a telescopic mechanism, a guide device and a limit device; baffles are provided on both sides of the cargo, and a telescopic mechanism and a guide device are provided on the side of the baffle away from the cargo, and the telescopic mechanism and the guide device are respectively connected to the mounting frame; a positioning device on the guide device; the mounting frame is an H-shaped frame structure fixedly connected to the cargo platform frame; the telescopic mechanism includes a turbine screw lift.

[0004] As mentioned above, since a fixed baffle is installed, the goods can be blocked in time when the stacker accelerates or decelerates, causing the goods to tilt. However, this baffle connection and positioning method requires the goods to have a higher center of gravity or a more neat stack shape, but the positioning effect is poor for bagged stacked goods; relative sliding is prone to occur between bagged goods during acceleration and deceleration. Even if tipping does not occur, the size of the goods will change and cause dimensional deviations, triggering the stacker alarm, which seriously affects the efficiency of warehousing and out-of-warehouse operations.

[0005] In view of this, this patent application is proposed. Summary of the invention

[0006] The present application proposes an anti-tipping device for a stacker's cargo platform, which aims to solve the problems existing in the above-mentioned prior art and, while actively clamping the cargo to prevent tipping, can prevent the cargo from slipping and effectively maintain the stability and external dimensions of the stack, thereby correspondingly reducing the risk of over-limit alarm and parking, and improving the efficiency of warehousing and out-of-warehouse operations.

[0007] The stacker loading platform anti-tipping device includes a splint assembly arranged vertically along the loading platform, a rotating assembly installed on one side of the loading platform to connect and drive the splint assembly to reciprocate in the horizontal direction, and a driving assembly driving the rotating assembly to reciprocate along the vertical center; when the goods are carried on the loading platform, the driving device drives the rotating assembly to rotate around its vertical center while pushing out the splint assembly in the horizontal direction, and the two groups of splint assemblies are pushed out from one side to the center respectively and at the same time approach and limit the moving range of the goods.

[0008] Furthermore, the driving assembly includes a reduction motor, and the output end of the reduction motor is sleeved with a driving sprocket, which is meshed and connected to the transmission chain to run; under the drive of the reduction motor, the rotating assembly is connected through the driving sprocket and the chain transmission to transmit the motor driving force to form a horizontal push-pull force of the splint assembly, forming a clamping of the cargo toward the center on one side or a release from the center to one side.

[0009] Furthermore, the rotating assembly includes two groups of rotating rods arranged vertically and maintained parallel to each other, each group of rotating rods is provided with at least one group of seat bearings, each group of seat bearings is installed and fixed on one side of the cargo platform, and the two groups of rotating rods are distributed vertically parallel to each other; a driven sprocket meshingly connected to the chain is fixedly sleeved at the end of one of the two groups of rotating rods; each group of rotating rods is hinged to two groups of connecting supports at the same time, and each group of connecting supports is fixedly connected to the same side of the splint assembly, and the rotating rods rotate around their vertical center while driving the connecting supports to rotate to push and pull the splint assembly horizontally.

[0010] Furthermore, one end of the swing arm is horizontally fixedly sleeved on the rotating rod, and the connecting support includes a vertical part and a horizontal part fixedly connected to form an integral structure. The other end of the swing arm is provided with a through hole, which is vertically rotatably connected to the horizontal part of the connecting support through a screw and a nut.

[0011] Furthermore, a pin shaft for limiting the rotation of the swing arm is vertically arranged on the horizontal portion of the connecting support and adjacent to one side of the through hole of the swing arm.

[0012] Furthermore, the pin shaft is located at the far end of the swing trajectory of the swing arm to swing out the clamping plate assembly.

[0013] Furthermore, the splint assembly includes a splint, on the same side of which are fixedly connected an array of mounting seats and connecting seats that are mutually sleeved and each has a T-shaped integral sleeve structure; one side of the mounting seat is fixedly connected to the splint, and the mounting seat and the connecting seat are fixedly connected horizontally and vertically by an array of bolts, and the outer side surface of the connecting seat is fixedly connected to the vertical portion of the connecting support by an array of bolts.

[0014] In summary, this application has the following advantages and beneficial effects:

[0015] 1. The stacker cargo platform anti-dumping device can actively clamp cargo from both sides to ensure that cargo does not deflect slightly under high acceleration, thus ensuring safe transportation.

[0016] 2. The present application realizes a self-locking mechanism of the pin shaft after clamping, which can withstand higher acceleration without causing the device to fail, that is, it effectively utilizes the transmission structure of each component between the rotating rod and the push plate and the limiting effect of the pin shaft, thereby protecting the reduction motor driving the clamping plate from damage by the reaction force of the cargo.

[0017] 3. The present application realizes a movable clamping plate, which can adjust the clamping distance in a small range according to the shape of the goods, so as to adapt to the diversity of goods.

[0018] 4. During the clamping process of the present application, the push plates on both sides can simultaneously push the goods that are slightly deviated from the center of the cargo platform to the middle position, so as to effectively ensure the accuracy of the positioning of the goods when picking up and placing them. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application will now be further described with reference to the following drawings;

[0020] Figure 1 This is a schematic diagram of the structure of the stacker loading platform anti-dumping device described in this application;

[0021] Figure 2 for Figure 1 a side view of the structure shown;

[0022] Figure 3 for Figure 1 Schematic diagram of some structures;

[0023] Figure 4 is a schematic diagram of the structure of the drive component;

[0024] Figure 5 is a schematic diagram of the structure of the rotating assembly;

[0025] Figure 6 for Figure 5 An exploded schematic diagram of the middle rotating rod connection structure;

[0026] Figure 7 is a schematic diagram of the structure of the splint assembly;

[0027] Figure 8 for Figure 7 Schematic diagram of the connection between the middle splint and the connecting support;

[0028] Figure 9-1 and Figure 9-2 They are the structural and force analysis diagrams of the splint being pushed horizontally synchronously by two sets of swing arms;

[0029] Figure 10-1 to Figure 10-3They are schematic diagrams of different stages of the swing arm synchronously pushing out the splint assembly;

[0030] Figure 11-1 to Figure 11-3 They are the structure and force analysis diagram of the pin-limited swing arm; DETAILED DESCRIPTION

[0031] Embodiment 1, as Figure 1 and Figure 2 As shown, the present application proposes a two-group symmetrically arranged cargo anti-dumping device installed on a cargo platform 100 of a stacker, each group of the device includes a clamping plate assembly 30 vertically arranged along the cargo platform 100, a rotating assembly 20 installed on one side of the cargo platform 100 to connect and drive the clamping plate assembly 30 to reciprocate in the horizontal direction, and a driving assembly 10 driving the rotating assembly 20 to reciprocate along the vertical center.

[0032] When the cargo 40 is loaded on the cargo platform 100, the driving device 10 drives the rotating assembly 20 to rotate around its vertical center and pushes out the clamping assembly 30 in the horizontal direction. The two sets of clamping assembly 30 are pushed out from one side to the center respectively and approach and limit the moving range of the cargo 40 at the same time, so that it is positioned at the center of the cargo platform 100. When the cargo platform 100 runs horizontally or vertically at high speed along the stacker, the cargo 40 can be kept in a relatively stable and static state by the clamping force of the clamping assembly 30 on both sides, thereby preventing the cargo 40 from slipping or deforming significantly from the cargo platform 100 (specifically bagged cargo or other packaging materials with unplanned and randomly changing shapes) or falling off the cargo platform 100.

[0033] The driving assembly 10 includes a reduction motor 1 mounted on the cargo platform 100 through a motor bracket 4, and a driving sprocket 2 is sleeved on the output end of the reduction motor 1, and the driving sprocket 2 is meshed and connected to the transmission chain 3 for operation;

[0034] Driven by the reduction motor 1, the rotating assembly 20 is connected through the driving sprocket 2 and the chain 3 to transmit the motor driving force to form a horizontal push-pull force of the splint assembly 30, forming a one-side center clamping or a center-to-one release of the cargo 40.

[0035] The rotating assembly 20 includes two groups of rotating rods 8 arranged vertically and kept parallel to each other, each group of rotating rods 8 is sleeved with two groups of upper and lower bearings 6, and each group of bearings 6 is fixed to one side of the cargo platform 100 through a bearing bracket 7, so that each group of rotating rods 8 is extended and connected vertically, and at the same time, the two groups of rotating rods 8 are kept at a certain distance from each other and are distributed vertically in parallel;

[0036] A driven sprocket 5 meshingly connected to the chain 3 is fixedly mounted at the end of the rotating rod 8 of one of the two groups. When the chain 3 reciprocates, the driven sprocket 5 drives the rotating rod 8 of the group to rotate in a clockwise or counterclockwise direction.

[0037] Each set of rotating rods 8 is hinged to two sets of connecting supports 9 at the same time, and each set of connecting supports 9 is fixedly connected to the same side of the clamping plate assembly 30. The rotating rods 8 rotate around their vertical center and drive the connecting supports 9 to rotate to push and pull the clamping plate assembly 30 horizontally.

[0038] The driven sprocket 5 is only provided on one of the two groups of rotating rods 8, so as to avoid the transmission failure caused by the deviation of the meshing precision between the two groups of sprockets and the chain. The driven sprocket 5 on one group of rotating rods 8 drives the rotating rods 8 to rotate under the transmission of the chain 3. After the rotating rods 8 push and pull the clamping plate assembly 30 in the horizontal direction, the clamping plate assembly 30 transmits the displacement force in the opposite direction to the other group of rotating rods 8 through the connecting support 9, causing it to rotate passively; that is, when one group of rotating rods 8 rotates, the other group of rotating rods 8 can rotate synchronously. Figure 9-1 and Figure 9-2 shown.

[0039] Another example Figure 6 As shown, one end of the swing arm 91 is fixedly sleeved horizontally on the rotating rod 8, and the connecting support 9 includes a vertical portion and a horizontal portion fixedly connected as an integral structure. The other end of the swing arm 91 is provided with a through hole, and the through hole is vertically rotatably connected to the horizontal portion of the connecting support 9 through a screw 92 and a nut 93, so that the swing arm 91 is formed with the through hole as the center (it is fixedly connected to the rotating rod 8 and can be regarded as an integral workpiece with the rotating rod 8, and the vertical center point of the rotating rod 8 is Figure 9-1 and Figure 9-2 The hinge point (i.e., the two points C and D in the figure) and the connecting support 9 (which is fixedly connected to the clamping plate assembly 30 and can be regarded as an integral workpiece with the clamping plate assembly 30) Figure 9-1 and Figure 9-2 A and B in the figure); when the rotating rod 8 is rotated horizontally under the transmission of the driving assembly 10, the connecting support 9 is subjected to force from the above-mentioned hinge point and transmits a thrust or pull in the horizontal direction to the splint assembly 30.

[0040] In the two sets of rotating components 20, the lengths of the swing arms 91 sleeved and connected on the two sets of rotating rods 8 are equal, that is, Figure 9-2R in the figure; the angles α and β between the swing arm 91 and the clamping plate assembly 30 and the horizontal direction are also equal, then the two sets of swing arms 91 and the clamping plate assembly 30 are in the same horizontally distributed parallelogram, so that in the process of the swing arm 91 swinging to drive the clamping plate assembly 30 to move horizontally, the inner side surface of the clamping plate assembly 30 and the cargo 40 can always be maintained in a parallel position relationship, and the pushing process of the two sets of clamping plate assemblies 30 clamping the cargo 40 from both sides is also carried out synchronously.

[0041] Furthermore, a pin 94 for limiting the rotation angle of the swing arm 91 can be vertically arranged on the horizontal portion of the connecting support 9, adjacent to one side of the through hole of the swing arm 91, and the pin 94 is located at the far end of the swing trajectory of the swing arm 91 to swing out the splint assembly 30.

[0042] The clamping plate assembly 30 includes a clamping plate 31 for clamping cargo 40 from the side, and an array of mounting seats 32 and connecting seats 33 that are mutually nested and have a T-shaped integral sleeve structure are fixedly connected to the outer side of the clamping plate 31; one side of the mounting seat 32 is fixedly connected to the clamping plate 31 by an array of bolts 34, and the mounting seat 32 and the connecting seat 33 are fixedly connected horizontally and vertically by an array of bolts 34, and the outer side surface of the connecting seat 33 is fixedly connected to the vertical part of the connecting support 9 by an array of bolts 34.

[0043] like Figure 10-1 to Figure 10-3 The swing arm 91 is shown in different stages of the process of pushing out the clamping plate assembly 30:

[0044] After the cargo 40 enters the cargo platform 100, the reduction motor 1 rotates forward, and the two sets of rotating rods 8 rotate clockwise synchronously. Through the swing transmission of the swing arm 91, the clamping plate assembly 30 moves to the right front around the hinge points A and B with the swing arm 91 accordingly; as the angle between the rotating rod 8 and the connecting support 9 gradually increases, the distance between the clamping plate assembly 30 and the side of the cargo 40 gradually decreases until the two are in contact with each other or the distance reaches the minimum state, at this time, the brake of the reduction motor 1 is opened and locked, and the clamping plate assembly 30 is stably maintained in the clamping state to prevent the cargo from tipping over.

[0045] When the cargo platform 100 runs at a large acceleration, the cargo 40 falls sideways on the clamp assembly 30 due to inertia. Since the clamp assembly 30 is fixedly connected by the clamp 31 and the mounting seat 32 and the connecting seat 33 of the T-sleeve structure, the inertia force of the cargo 40 is transmitted to the rotating assembly 20 through the connecting support 9. The rotating rod 8 and the connecting support 9 are connected in a single axis and are not fixed. The torque generated by the lateral force feedback from the cargo 40 due to its own shaking is transmitted to the motor shaft of the reduction motor 1, thereby directly generating a certain impact on the reduction motor 1 with a brake and inevitably affecting its service life.

[0046] To prevent the reduction motor 1 from being subjected to external impact, Figure 11-1 to Figure 11-3As shown, when the angle between the rotating rod 8 and the connecting support 9 is further increased, such as from 180 degrees in the original equilibrium state to 190 degrees, that is, when the splint assembly 30 transmits the lateral pressure of the cargo 40, the pin 94 located at the far end of the swing trajectory of the splint assembly 30 can be pushed out by the swing arm 91 to offset the torque generated by the lateral pressure, thereby regaining the force balance of the splint assembly 30.

[0047] Specifically, F is the pressure of the cargo 40 on the clamping plate assembly 30, and the forces on each fulcrum C and D are F1=F2=F / 2 respectively. The rotation of the rotating rod 8 is a key component affecting the stability of the entire structure. Therefore, the following force analysis is first performed on the structure when it is stable:

[0048] Taking the left part as an example, F1 is the pressure of the clamping plate assembly 30 on the rotating rod 8, and F2 is the supporting force of the seat bearing 6 on the rotating rod 8. The two are equal in magnitude and opposite in direction, and the torque generated is W1=F1l AC cos a, direction is counterclockwise;

[0049] The force on the rotating rod 8 at the contact point M between the pin 94 and the swing arm 91 (similarly, point N in the figure is the contact point between another set of pins 94 and the swing arm 91) is f1, which is perpendicular to the rotating rod 8; the force on the point A where the swing arm 91 is hinged to the clamping plate assembly 30 is f2, which is equal to f1 in magnitude and opposite in direction; the torque generated thereby is W2=f1l AM , the direction is counterclockwise;

[0050] When the above structure reaches equilibrium, the two moments W1 and W2 are equal in magnitude and opposite in direction, that is, W1 = W2, F1l AC cosa=f1l AM ,

[0051] Similarly, we can get:

[0052] Because the angle a and the rod length l AC , l AM , l BD With l BN It is a fixed value, so f1 and f2 are related to F; they change with the change of F. No matter how large F is, the structure can remain stable and not deformed if the material does not deform or break.

[0053] Based on the structural design and application of the above-mentioned cargo anti-dumping device, the present application proposes the following workflow of the cargo anti-dumping method for the cargo platform of a stacker:

[0054] 1. In the initial state, the two sets of clamping plate assemblies 30 are opened to both sides, and the goods 40 are transferred from the shelf (conveyor) to the cargo platform 100;

[0055] 2. When the sensor detects the cargo 40, the two groups of reduction motors 1 are respectively operated to drive the rotating rod 8 to rotate through the chain 3, so that the clamping plate assembly 30 is gradually closed from the open and closed state to the middle;

[0056] 3. After the swing arm 91 between the rotating rod 8 and the clamping plate assembly 30 swings to the maximum angle, the reduction motor 1 stops rotating and the brake is locked; at this time, the pin shaft 94 blocks the swing arm 91 from continuing to rotate to form a stable structure;

[0057] 4. When the stacker is accelerating or decelerating, the pin shaft 94 offsets the lateral pressure continuously applied by the goods 40 through the swing arm 91 and limits the swing arm 91 from continuing to rotate, so as to effectively prevent the goods 40 from impacting the reduction motor 1.

[0058] The above contents and the embodiments given in the accompanying drawings are only preferred solutions for achieving the purpose of the present invention. Those skilled in the art can be inspired by this and directly deduce other alternative structures that conform to the design concept of the present invention. Other structural features obtained thereby should also belong to the scope of the solution described in the present invention.

Claims

1. A stacker cargo platform anti-dumping device, characterized in that: It includes a splint assembly arranged vertically along the cargo platform, a rotating assembly installed on one side of the cargo platform to connect and drive the splint assembly to reciprocate in the horizontal direction, and a driving assembly driving the rotating assembly to reciprocate along the vertical center; when the cargo is loaded on the cargo platform, the driving device drives the rotating assembly to rotate around its vertical center and pushes out the splint assembly in the horizontal direction at the same time, and the two groups of splint assemblies are pushed out from one side to the center respectively and approach and limit the moving range of the cargo at the same time.

2. The stacker cargo platform anti-dumping device according to claim 1, characterized in that: The driving assembly includes a reduction motor, and the output end of the reduction motor is sleeved with a driving sprocket, which is meshed and connected to the transmission chain to run; under the drive of the reduction motor, the rotating assembly is connected through the driving sprocket and the chain transmission to conduct the motor driving force to form a horizontal push-pull force of the splint assembly, forming a clamping of the cargo toward the center on one side or a release from the center to one side.

3. The stacker cargo platform anti-dumping device according to claim 1 or 2, characterized in that: The rotating assembly comprises two groups of rotating rods arranged vertically and parallel to each other, each group of rotating rods is sleeved with at least one group of seat bearings, each group of seat bearings is fixedly mounted on one side of the cargo platform, and the two groups of rotating rods are vertically parallel to each other; A fixed sleeve at the end of the rotating rod of one of the two groups is provided with a driven sprocket engaged with the chain; Each set of rotating rods is hinged to two sets of connecting supports at the same time, and each set of connecting supports is fixedly connected to the same side of the clamping plate assembly. When the rotating rods rotate around their vertical centers, they drive the connecting supports to rotate and push and pull the clamping plate assembly horizontally.

4. The stacker cargo platform anti-dumping device according to claim 3, characterized in that: One end of the swing arm is horizontally fixedly sleeved on the rotating rod, and the connecting support includes a vertical part and a horizontal part fixedly connected as an integral structure. The other end of the swing arm is provided with a through hole, which is vertically rotatably connected to the horizontal part of the connecting support through a screw and a nut.

5. The stacker cargo platform anti-dumping device according to claim 4, characterized in that: A pin shaft for limiting the rotation of the swing arm is vertically arranged on a horizontal part of the connecting support and adjacent to one side of the through hole of the swing arm.

6. The stacker cargo platform anti-dumping device according to claim 5, characterized in that: The pin shaft is located at the far end of the swing track of the swing arm to swing out the clamping plate assembly.

7. The stacker cargo platform anti-dumping device according to claim 1 or 2, characterized in that: The splint assembly includes a splint, on the same side of which are fixedly connected an array of mounting seats and connecting seats that are mutually sleeved and each has a T-shaped integral sleeve structure; one side of the mounting seat is fixedly connected to the splint, and the mounting seat and the connecting seat are fixedly connected horizontally and vertically by an array of bolts, and the outer side surface of the connecting seat is fixedly connected to the vertical part of the connecting support by an array of bolts.

Images