Device and method for preventing tray from tipping over

Abstract

The present invention discloses a device and method for preventing a tray from tipping over, aiming to provide a device and method for effectively preventing a tray from tipping over. The device comprises two symmetrically arranged connecting seats, a support arranged in an isosceles triangle with the two connecting seats, a driving rod whose rod portion is hinged to the support, a force-dividing rod whose two rod portions are hinged to each other through a rotating shaft, two locking rods in the same plane, two guide seats symmetrically located on both sides of the two connecting seats, a connecting rod whose two ends are respectively connected to the rotating shaft and the driving rod, a fixed seat located between the two connecting seats, and a reset spring whose two ends are respectively connected to the connecting rod rod portion and the fixed seat; and a reset spring whose two ends are respectively connected to the connecting rod and the rotating shaft; the two locking rods are guided and matched with the guide seats and can slide along the guide seats; the rotating shaft is located between the two connecting seats, one end of one of the force-dividing rods is hinged to one of the connecting seats, and the other end thereof is connected to one of the locking rods; one end of the other force-dividing rod is hinged to the other connecting seat.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a device and method for preventing a pallet from tipping over. Background Art

[0002] When the logistics conveyor line is changing the direction of the boxed goods, it is necessary to use a lifting and rotating conveyor to change the direction of the materials. When the goods are not full and the height is high (over 800mm), the boxes on the pallet are prone to shifting their center of gravity during the rotation and lifting of the lifting and rotating conveyor, causing the pallet to tilt, causing the box loaded with goods to slide off the pallet, causing damage to the box and the goods. If the pallet loaded with boxes can remain stable during the rotation and lifting process, the goods will also be stable on the pallet and will not fall over, which can ensure the normal transportation of the goods. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a device and method for preventing a pallet from tipping over, which can ensure that the pallet remains stable when in contact with a downstream conveyor, so as to improve the reliability of transportation.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] A device and method for preventing a tray from tipping over, comprising two symmetrically arranged connecting seats, a support seat arranged in an isosceles triangle with the two connecting seats, a driving rod whose rod portion is hinged to the support seat, a force dividing rod whose two rod portions are hinged to each other through a rotating shaft, two locking rods in the same plane, two guide seats symmetrically located on both sides of the two connecting seats, a connecting rod connected to the rotating shaft and the driving rod at both ends respectively, a fixed seat located between the two connecting seats, and a reset spring connected to the connecting rod rod portion and the fixed seat at both ends respectively; and a reset spring connected to the connecting rod and the rotating shaft at both ends respectively; the two locking rods are guided and matched with the guide seats and can slide along the guide seats; the rotating shaft is located between the two connecting seats, one end of one of the force dividing rods is hinged to one of the connecting seats, and the other end thereof is connected to one of the locking rods; one end of the other force dividing rod is hinged to the other connecting seat, and the other end thereof is connected to the other locking rod; the force dividing rod and the locking rod are movably connected, and when the force dividing rod swings, the arc trajectory movement of the end of the force dividing rod drives the locking rod to move linearly.

[0006] Preferably, the force-dividing rod is connected to the locking rod via a ball head rod, the ball head portion of the ball head rod passes through the locking rod, and the rod portion is fixedly connected to the force-dividing rod.

[0007] Preferably, the guide seat and the locking rod adopt a guide sleeve structure.

[0008] Preferably, the guide seat and the locking rod adopt a guide rail structure.

[0009] Preferably, the guide seat and the locking rod adopt a guide groove structure.

[0010] A method for preventing a pallet from tipping over, using the device as described above, the method comprises the following contents:

[0011] (1) Two sets of devices are arranged symmetrically, ensuring that the upper structure of the device is located in the groove area on the corresponding side of the bottom of the tray, and the end of the drive rod extends to the support foot on the outside of the bottom of the tray;

[0012] (2) The connecting seat, the support seat, the guide seat and the fixed seat are respectively fixed to the upper end of the lifting and rotating conveyor. At this time, the lifting and rotating conveyor is located between the conveying chains on both sides of the conveying equipment;

[0013] (3) When the pallet carries the box along the conveyor chain of the conveying equipment and reaches the top of the lifting and rotating conveyor, the conveying equipment stops. At this time, the lifting and rotating conveyor rises, and the upper structures of the two sets of devices enter the groove areas on both sides of the bottom of the pallet. As the lifting and rotating conveyor continues to rise, the support feet on both sides of the bottom of the pallet press the drive rod downward. After the drive rod is activated, it pulls the force-dividing rod to swing. The force-dividing rod drives the locking rod to move to the outside of the bottom of the pallet and contact the inner wall surface of the support foot on the outside of the pallet, so as to lock and fix the pallet and prevent the pallet from tipping over freely. At the same time, the middle support foot of the pallet contacts the top of the lifting and rotating conveyor.

[0014] (4) The pallet then rises steadily with the help of the lifting and lifting device of the lifting conveyor. After the supporting feet on both sides of the pallet leave the conveying chain of the conveying equipment, the lifting conveyor stops rising and completes the rotation reversal.

[0015] (5) After the pallet is reversed, the lifting conveyor descends along the reverse direction of the above steps to complete the lowering of the pallet.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The present invention uses two sets of symmetrically installed on the lifting and rotating conveyor. When the lifting and rotating conveyor rises and lifts the tray, the gravity of the tray is used as the driving force to realize the automatic operation of the device. The present invention has the advantages of simple structure, high transmission reliability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1It is a top view of the present invention.

[0020] Figure 2 for Figure 1 The left view of some components is omitted.

[0021] Figure 3 for Figure 1 Structural diagram of the middle drive rod and some connected components.

[0022] The arrows in the figure indicate the movement direction of each component when the driving rod is subjected to downward pressure from the tray. DETAILED DESCRIPTION

[0023] In order to more clearly explain the purpose, technical solution and advantages of the present invention, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention described below, all other embodiments obtained by ordinary technicians in this field without paying creative work belong to the scope of protection of the present invention.

[0024] In the description of the present invention, the technical terms or scientific terms used should be the common meanings understood by people with general skills in the technical field to which the present invention belongs. It should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "set" and the like should be understood in a broad sense. For example, it can be fixedly connected or set, or it can be detachably connected or set, or it can be connected or set in one piece. The terms "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can also include electrical connections. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The directions or positional relationships indicated by terms such as “center”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0025] Meanwhile, in order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0026] As shown in the accompanying drawings, the device for preventing a tray from tipping over of the present invention comprises two symmetrically arranged connecting seats 1 and 1', a support 2 arranged in an isosceles triangle with the two connecting seats, a driving rod 3 whose rod portion is hinged to the support 2, a force dividing rod 5 and 5' whose two rod portions are hinged to each other through a rotating shaft 4, two locking rods 6 and 6' in the same plane, two guide seats 7 symmetrically located on both sides of the two connecting seats 1 and 1', a connecting rod 8 connected to the rotating shaft 4 and the driving rod 3 at both ends, a fixing seat 11 located between the two connecting seats 1 and 1', and a return spring 9 connected to the rod portion of the connecting rod 8 and the fixing seat 11 at both ends; and A return spring 9 connected to the connecting rod 8 and the rotating shaft 4; the two locking rods are guided and matched with the guide seat 7 and can slide along the guide seat 7; the rotating shaft 4 is located between the two connecting seats, one end of one of the force-dividing rods 5 is hinged to one of the connecting seats 1, and the other end thereof is connected to one of the locking rods 6; one end of the other force-dividing rod is hinged to the other connecting seat, and the other end thereof is connected to the other locking rod 6'; the force-dividing rods 5, 5' and the locking rods 6, 6' are movably connected, and when the force-dividing rods 5, 5' swing, the arc-shaped trajectory movement of the ends of the force-dividing rods 5, 5' drives the locking rods 6, 6' to move in a straight line.

[0027] In this embodiment, the force-dividing rod is connected to the locking rod 6, 6' through the ball head rod 10, the ball head portion of the ball head rod 10 passes through the locking rod 6, 6', and the rod portion is fixedly connected to the force-dividing rod. Obviously, a telescopic rod or the like can also be used to convert the swing of the end of the force-dividing rod 5, 5' into the linear motion of the locking rod 6, 6'.

[0028] In the present embodiment, the guide seat 7 and the locking rod adopt a guide sleeve structure. Obviously, a commonly used linear guide mechanism such as a guide rail structure or a guide groove structure (such as a dovetail groove) can also be adopted.

[0029] In the present invention, the interference between the components can be achieved by using existing methods such as opening, bending or step arrangement, and there is no technical problem.

[0030] The method of the present invention is as follows:

[0031] (1) Two sets of the above-mentioned devices are arranged symmetrically to ensure that the upper structure of the device is located in the groove area on the corresponding side of the bottom of the pallet, and the end of the drive rod extends to the support foot outside the bottom of the pallet, and the extended length does not overlap or interfere with the conveyor chain of the conveying equipment;

[0032] (2) The connecting seat, the support seat, the guide seat and the fixed seat are respectively fixed to the upper end of the lifting and rotating conveyor. At this time, the lifting and rotating conveyor is located between the conveying chains on both sides of the conveying equipment;

[0033] (3) When the pallet carries the box along the conveyor chain of the conveying equipment and reaches the top of the lifting and rotating conveyor, the conveying equipment stops. At this time, the lifting and rotating conveyor rises, and the upper structures of the two sets of devices enter the groove areas on both sides of the bottom of the pallet. As the lifting and rotating conveyor continues to rise, the support feet on both sides of the bottom of the pallet press the drive rod downward. After the drive rod is activated, it pulls the force-dividing rod to swing. The force-dividing rod drives the locking rod to move to the outside of the bottom of the pallet and contact the inner wall surface of the support foot on the outside of the pallet, so as to lock and fix the pallet and prevent the pallet from tipping over freely. At the same time, the middle support foot of the pallet contacts the top of the lifting and rotating conveyor.

[0034] (4) The pallet then rises steadily with the help of the lifting and lifting device of the lifting conveyor. After the supporting feet on both sides of the pallet leave the conveying chain of the conveying equipment, the lifting conveyor stops rising and completes the rotation reversal.

[0035] (5) After the pallet is reversed, the lifting conveyor descends along the reverse direction of the above steps to complete the lowering of the pallet.

[0036] The device uses the pallet's deadweight to push down the conveying driving force when the lifting and rotating conveyor lifts the pallet. The locking rod slides through the linkage drive of each component, so that the locking rod extends to the pallet groove to prevent the pallet from tipping over freely. When the lifting and rotating conveyor descends, the pallet gradually separates from the driving rod. Under the synchronous action of the reset spring, the locking rod returns to its position to allow the pallet to be conveyed freely. The method and device use the pallet's gravity as the driving force and can realize automatic operation. It has a simple structure, high transmission reliability and low cost.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. For those skilled in the art, any modification, equivalent replacement and improvement of the technical solutions or partial technical features recorded in the above specific embodiments within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preventing a tray from tipping over, characterized in that: The invention comprises two symmetrically arranged connecting seats (1, 1'), a support (2) arranged in an isosceles triangle with the two connecting seats (1, 1'), a driving rod (3) whose rod portion is hinged to the support (2), a force component rod (5, 5') whose two rod portions are hinged to each other via a rotating shaft (4), two locking rods (6, 6') on the same plane, two guide seats (7) symmetrically located on both sides of the two connecting seats (1, 1'), a connecting rod (8) whose two ends are respectively connected to the rotating shaft (4) and the driving rod (3), a fixing seat (11) located between the two connecting seats (1, 1'), and a return spring (9) whose two ends are respectively connected to the rod portion of the connecting rod (8) and the fixing seat (11); the two locking rods ( The rotating shaft (4) is located between the two connecting seats (1, 1'); one end of one of the force-dividing rods (5) is hinged to one of the connecting seats (1), and the other end thereof is connected to one of the locking rods (6); one end of the other force-dividing rod (5') is hinged to the other connecting seat (1'), and the other end thereof is connected to the other locking rod (6'); the force-dividing rod (5, 5') and the locking rod (6, 6') are movably connected, and when the force-dividing rod (5, 5') swings, the arc-shaped trajectory movement of the end of the force-dividing rod (5, 5') drives the locking rod (6, 6') to move linearly.

2. The device for preventing a tray from tipping over according to claim 1, characterized in that: The force distribution rod (5, 5') is connected to the locking rod (6, 6') via a ball head rod (10); the ball head portion of the ball head rod (10) passes through the locking rod (6, 6'), and the rod portion thereof is fixedly connected to the force distribution rod (5, 5').

3. The device for preventing a tray from tipping over according to claim 1 or 2, characterized in that: The guide seat (7) and the locking rod (6, 6') adopt a guide sleeve structure.

4. The device for preventing a tray from tipping over according to claim 1 or 2, characterized in that: The guide seat (7) and the locking rod (6, 6') adopt a guide rail structure.

5. The device for preventing a tray from tipping over according to claim 1 or 2, characterized in that: The guide seat (7) and the locking rod (6, 6') adopt a guide groove structure.

6. A method for preventing a pallet from tipping over, characterized in that Using the device for preventing a tray from tipping over as claimed in claim 1, the method comprises the following steps: (1) Two sets of devices to prevent the pallet from tipping over are arranged symmetrically, ensuring that the upper structure of the device to prevent the pallet from tipping over is located in the groove area on the corresponding side of the bottom of the pallet, and the end of the driving rod extends to the support foot on the outer side of the bottom of the pallet; (2) The connecting seat, the support seat, the guide seat and the fixed seat are respectively fixed to the upper end of the lifting and rotating conveyor. At this time, the lifting and rotating conveyor is located between the conveying chains on both sides of the conveying equipment; (3) When the pallet carries the box along the conveyor chain of the conveying equipment to the top of the lifting and rotating conveyor, the conveying equipment stops. At this time, the lifting and rotating conveyor rises, and the upper structures of the two sets of devices to prevent the pallet from tipping over enter the groove areas on both sides of the bottom of the pallet. As the lifting and rotating conveyor continues to rise, the support feet on both sides of the bottom of the pallet press the drive rod downward. After the drive rod is activated, it pulls the force-dividing rod to swing. The force-dividing rod drives the locking rod to move to the outside of the bottom of the pallet and contact the inner wall surface of the support foot on the outside of the pallet, thereby locking and fixing the pallet and preventing the pallet from tipping over freely. At the same time, the middle support foot of the pallet contacts the top of the lifting and rotating conveyor. (4) The pallet then rises steadily with the help of the lifting conveyor and the device that prevents the pallet from tipping over. After the supporting feet on both sides of the pallet leave the conveying chain of the conveying equipment, the lifting conveyor stops rising and completes the rotation reversal; (5) After the pallet is reversed, when the lifting and rotating conveyor descends, the pallet gradually separates from the driving rod. Under the synchronous action of the return spring, the locking rod returns to its position to allow the pallet to be transported freely.

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