Safety protection device of large stacking machine

Abstract

The utility model provides a large stacking machine safety protection device which comprises a safety detection mechanism arranged around a stacking machine, an emergency action mechanism capable of braking the stacking machine emergently, a laser emitting mechanism capable of emitting signals to the emergency action mechanism and a control mechanism capable of receiving information. The emergency action mechanism is fixed to the tail end of the advancing route of the stacking machine and located in the safety detection mechanism, the laser emission mechanism is arranged on an advancing platform of the stacking machine, and the control mechanism is connected with the safety detection mechanism and the emergency action mechanism. According to the utility model, by introducing the cooperation of the laser emission mechanism and the emergency action mechanism, when an operator accidentally enters a dangerous area, the danger can be more quickly detected and the response can be made compared with the traditional method. The rapid reaction mechanism significantly reduces the risk of accident occurrence, and improves the safety performance of industrial automation equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of stackers, in particular to a safety protection device for large stackers. Background Art

[0002] In modern industrial manufacturing, stackers are widely used as automated mechanical equipment, particularly in operations involving the handling and stacking of heavy objects. Stackers can efficiently complete tasks such as handling, stacking, and retrieving goods, significantly improving production efficiency and reducing labor costs. However, with the acceleration of production speeds and the increasing complexity of the operating environment, operator safety faces potential risks. Traditional safety protection measures, such as guardrails and warning signs, while providing a certain degree of security, cannot achieve real-time monitoring and rapid response of the operating area. In actual operations, if an operator accidentally enters a dangerous area, they may not be protected in time, resulting in a safety accident.

[0003] The existing stacker crane safety protection measures have the following deficiencies:

[0004] 1. Inadequate emergency response measures: Existing safety protection measures rely on physical barriers or manual monitoring. These methods are slow to react when dangerous situations are detected and lack effective emergency measures to immediately stop equipment operation, making it impossible to prevent accidents immediately.

[0005] 2. Inadequate protection measures: The on-site operating environment is complex and changeable. When operators enter dangerous areas, human errors may occur, causing the stacker to suddenly start. However, existing safety protection measures cannot effectively prevent accidents in such situations.

[0006] 3. Low level of automation: Existing security protection measures are not fully integrated into the automated operation process, resulting in low work efficiency. Utility Model Content

[0007] The technical problem to be solved by the utility model is how to improve the reaction speed of safety protection measures.

[0008] The utility model solves the above technical problems through the following technical means:

[0009] The utility model provides a safety protection device for a large stacker, comprising a safety detection mechanism arranged around the stacker, an emergency action mechanism capable of emergency braking the stacker, a laser emitting mechanism capable of transmitting signals to the emergency action mechanism, and a control mechanism capable of receiving information. The emergency action mechanism is fixed at the end of the stacker's travel route and inside the safety detection mechanism. The laser emitting mechanism is arranged on the stacker's travel platform. The control mechanism is connected to the safety detection mechanism and the emergency action mechanism.

[0010] Beneficial Effects: The present invention ensures worker safety during both normal operation and emergency braking by integrating a safety detection mechanism, an emergency action mechanism, a laser emission mechanism, and a control mechanism. This eliminates potential safety blind spots in traditional safety measures, provides more comprehensive personnel protection, and enables real-time monitoring and rapid response to the stacker's operating area. By integrating a laser emission mechanism and an emergency action mechanism, the present invention enables workers to detect and respond to danger more quickly than with traditional methods when they accidentally enter a dangerous area. This rapid response mechanism significantly reduces the risk of accidents and improves the safety performance of industrial automation equipment.

[0011] Preferably, the safety detection mechanism includes a protective fence, which is arranged around the operating area of the stacker. The protective fence is provided with a protective door, and grating sensors are provided on both sides of the protective door frame.

[0012] Beneficial effect: The utility model sets a grating sensor on the protective door based on the principle of laser beam. When the operator enters the protective fence through the protective door, the grating sensor triggers a signal to the control mechanism, and the control mechanism sends an emergency braking instruction to the emergency action mechanism, and then the stacker stops running.

[0013] Preferably, the grating sensor is fixed on both sides of the protective door frame through an L-shaped bracket.

[0014] Preferably, the grating sensor includes a light emitter and a light receiver, and the light emitter and the light receiver are arranged opposite to each other.

[0015] Beneficial effect: The utility model emits infrared light through the light emitter and receives the infrared light through the light receiver to form a protective light curtain and generate light-passing and light-blocking signals.

[0016] Preferably, the emergency action mechanism includes a fixed bracket and a reflector, a guide rod is provided above the fixed bracket, the guide rod is sleeved with a travel cylinder, the travel cylinder is connected to the light baffle through a connecting plate, and the reflector is provided behind the light baffle.

[0017] Beneficial effect: The utility model moves up and down the light blocking plate through the walking cylinder. When the light blocking plate moves downward, it blocks the reflective sheet to prevent the laser signal from passing through the reflective sheet and reflecting back to the laser emitting mechanism. At this time, the emergency action mechanism will be triggered to perform emergency braking on the stacker, and the stacker will be quickly stopped.

[0018] Preferably, the laser emitting mechanism includes a laser emitter, a stacker, an upper guide rail, a lower guide rail, and a cross brace, wherein the laser emitter and the center point of the reflective sheet are kept in a straight line. The laser emitter is fixed to the stacker platform, and the stacker moves on the upper and lower guide rails. The upper guide rail is fixed to the shelves on both sides by the cross brace, and the lower guide rail is fixed to the ground on one side of the stacker.

[0019] Beneficial effect: The utility model uses a laser transmitter to move synchronously with the stacker, continuously transmitting signals to the light-emitting sheet of the emergency action mechanism, which is then bounced back to the laser transmitter. At this time, the emergency action mechanism cannot be triggered, thus maintaining the normal operation of the stacker.

[0020] Preferably, the reflective sheet is a long-distance reflective film, which is formed by sticking the long-distance reflective film on a reflective plate.

[0021] Beneficial effect: The utility model uses a long-distance reflective film that can receive long-distance lasers, optimize the reflection effect, and ensure that the laser can be effectively reflected back to the laser emitting mechanism.

[0022] Preferably, the reflective sheet is fixed under the fixing bracket, and the laser emitter emits laser light through the bottom of the fixing bracket to the reflective sheet, which can reflect the laser light back to the laser emitter.

[0023] Preferably, the control mechanism includes a PLC control box, which receives a trigger signal from the safety detection mechanism and issues an emergency braking instruction to the emergency action mechanism to perform emergency braking on the stacker.

[0024] Preferably, the safety protection device is combined with the shelf to provide all-round enclosed protection for the entire stacker. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a large stacker safety protection device in an embodiment;

[0026] Figure 2 This is a schematic structural diagram of a safety detection mechanism in an embodiment;

[0027] Figure 3 Schematic diagram of the structure of the grating sensor in the safety detection mechanism in the embodiment;

[0028] Figure 4 This is a schematic structural diagram of the emergency action mechanism in the embodiment;

[0029] Figure 5 This is a schematic diagram of the front structure of the emergency action mechanism in the embodiment;

[0030] Figure 6 This is a schematic structural diagram of the laser emission mechanism in the embodiment;

[0031] Figure 7 Schematic diagram of the principle of the emergency action mechanism in the embodiment. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships 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, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; in addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] like Figure 1-7 As shown, the present invention provides a large stacker crane safety protection device, comprising a safety detection mechanism 1 disposed around the stacker crane 31, an emergency action mechanism 2 capable of emergency braking the stacker crane 31, a laser emission mechanism 3 capable of transmitting signals to the emergency action mechanism 2, and a control mechanism 4 capable of receiving information. The emergency action mechanism 2 is fixed at the end of the stacker crane 31's travel path and is located within the safety detection mechanism 1. The control mechanism 4 is connected to the safety detection mechanism 1 and the emergency action mechanism 2.

[0035] The large stacker 31 targeted by the present invention, the laser emitting mechanism 3 is as follows Figure 1 As shown in FIG6 , two rows of parallel and oppositely positioned shelves 5 are set up, and together with the protective fences 11 at both ends, a closed space is formed. The stacker 31 is located in the middle area between the two rows of shelves, and operates based on the lower guide rails 32 and the upper guide rails 33 to place goods on the shelves 5 or take goods out of the shelves 5. Figure 6 As shown, the shelves 5 are omitted in the figure. Upper and lower rails are provided on either side of the stacker 31, along which the stacker 31 moves. The lower rail 32 is bolted to the ground on one side of the stacker 31, and the upper rail 33 is bolted to the center of a cross brace 34. The cross brace 34 is fixed to the pillars of the shelves 5 at both ends. Multiple cross braces 34 are provided, and the multiple cross braces 34 are parallel and equally spaced. The laser emitter 35 is fixed to the travel platform of the stacker 31 and moves synchronously with the stacker 31.

[0036] like Figure 1-3 As shown, the safety detection mechanism 1 includes a protective fence 11, which is arranged around the operating area of the stacker 31. The height of the protective fence 11 is greater than the height of a person, for example, 2 meters. The protective fence 11 is combined with the shelf 5 to provide all-round enclosed protection for the entire stacker 31.

[0037] In order to be able to check the operation of the stacker 31, a protective door (not shown) is set on the protective fence 11, and grating sensors 12 are set on both sides of the protective door frame. Figure 1 As shown, the safety detection mechanism 1 is arranged on both sides of the shelf 5, and the structures of the two sides are exactly the same. This embodiment only describes one side.

[0038] The grating sensor 12 refers to a pair of sensors based on the principle of laser beam reflection, specifically including an upper end cover 121, a lower end cover 122, an aviation terminal 123, a light emitter 124, a light receiver 125 and an L-shaped bracket 126. The upper and lower end covers are fixed to the upper and lower sides of the light emitter 124 or the light receiver 125 by bolts. An aviation terminal 123 is set at the bottom of the lower end cover 122 for cable line connection. The light emitter 124 and the light receiver 125 are located in the middle area of the grating sensor 12. The light emitter 124 is composed of a plurality of light-emitting devices that emit infrared light. The light receiver 125 is composed of a plurality of light-receiving devices that correspond one-to-one with the light-emitting devices of the light emitter to form a protective light curtain and generate light-passing and light-blocking signals. The L-shaped bracket 126 is bolted to the side of the grating sensor and fixed to the protective fence 11.

[0039] When the stacker 31 is in operation, the inside of the protective fence 11 is a dangerous area. When a worker enters the protective fence 11 through the protective door, a signal is triggered through the grating and sent to the control mechanism 4. The control mechanism 4 immediately issues an instruction to the emergency action mechanism 2 to realize emergency braking of the stacker 31.

[0040] like Figure 4-5As shown, the emergency action mechanism 2 includes a fixed bracket 21 and a reflector 26. The fixed bracket 21 includes a fixed leg 211 and a fixed rod 212. Two parallel fixed legs 211 are fixed to the ground. The length between the fixed legs 211 is greater than the length of the reflector 26. The height of the fixed legs 211 is greater than the height of the reflector 26. The fixed legs 211 are connected by a cross bar 213, and a fixed rod 212 is set in the middle of the cross bar 213.

[0041] A guide rod 22 is provided on the upper fixed rod 212 of the fixed bracket 21, and the upper and lower ends of the guide rod 22 are fixed to the side of the fixed rod 212 through L-shaped and U-shaped grooves. The guide rod 22 is sleeved with the walking cylinder 23, and the walking cylinder 23 is connected to the light baffle 25 through the connecting plate 24. The upper part of the light baffle 25 is connected to the connecting plate 24 by bolts. The cross-section of the light baffle 25 is rectangular, and the area of the cross-section of the light baffle 25 is larger than the area between the two fixed legs 211 of the fixed bracket 21. The reflector 26 is arranged behind the light baffle 25.

[0042] In order to optimize the reflection effect and be able to receive long-distance lasers, the reflective sheet 26 of this embodiment uses a long-distance reflective film, which is a reflective sheet 26 formed by sticking the long-distance reflective film on the reflective board, ensuring that the laser can be effectively reflected to the laser emitting mechanism 3 through the reflective sheet 26.

[0043] The emergency action mechanism 2 drives the light shielding plate 25 to move up and down through the travel cylinder 23 sleeved on the guide rod 22. When the light shielding plate 25 moves downward, it can block the reflective sheet 26 to prevent the reflective sheet 26 from reflecting the laser.

[0044] like Figure 6-7 As shown, the laser emitting mechanism 3 includes a laser emitter 35, which is fixed on the traveling platform of the stacker 31. The laser emitter 35 can emit laser and can move synchronously with the stacker 31. The laser emitter 35 and the center point of the reflective sheet 26 are arranged on the same straight line. The laser emitted by the laser reflector 35 can be received by the reflective sheet 26 and reflected back.

[0045] like Figure 1 As shown, the control mechanism 4 is fixed on the side of the protective fence 11. The control mechanism 4 includes a PLC control box. The PLC control box is connected to the emergency action mechanism 2 and the safety detection mechanism 1. It can receive the trigger signal of the safety detection mechanism 1 and issue an emergency braking instruction to the emergency action mechanism 2.

[0046] When the large stacker safety protection device of this embodiment is in use, the specific conditions are as follows:

[0047] 1. When the stacker 31 maintains normal operation, the laser emitter 35 moves synchronously with the stacker 31 and emits laser light. The laser light can be received by the reflective sheet 26 and reflected back to the laser reflector 35. At this time, the stacker maintains normal operation.

[0048] 2. When the stacker 31 is in emergency braking, when the stacker 31 is operating normally, the staff enters the protective fence 11 through the protective door. At this time, the grating will trigger a signal and send it to the control mechanism 4. The control mechanism 4 immediately issues an instruction to the emergency action mechanism 2. The emergency action mechanism 2 moves the light baffle 25 downward through the travel cylinder 23 to block the laser reflection back to the laser emitter 35. The stacker 31 does not receive the laser. At this time, the stacker 31 is triggered to stop running signal, and emergency braking is quickly implemented.

[0049] 3. Stacker 31 resumes operation. After emergency braking, it is necessary to confirm the safety of personnel and manually clear the alarm before the stacker 31 can resume operation, maximizing the personal safety of personnel. After safety is confirmed, the personnel manually resumes the operation through the PLC control box of the control mechanism 4. The PLC control box controls the travel cylinder 23 to move the light shield 25 upward. At this time, the reflector 26 can normally reflect the laser, and the stacker 31 resumes operation.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A large stacker safety protection device, characterized in that: The invention comprises a safety detection mechanism (1) arranged around a stacker (31), an emergency action mechanism (2) capable of emergency braking the stacker (31), a laser emission mechanism (3) capable of transmitting a signal to the emergency action mechanism (2), and a control mechanism (4) capable of receiving information. The emergency action mechanism (2) is fixed at the end of the travel path of the stacker (31) and is inside the safety detection mechanism (1). The control mechanism (4) is connected to the safety detection mechanism (1) and the emergency action mechanism (2).

2. The large stacker safety protection device according to claim 1, characterized in that: The safety detection mechanism (1) comprises a protective fence (11), which is arranged around the operating area of the stacker (31). The protective fence (11) is provided with a protective door, and grating sensors (12) are provided on both sides of the protective door frame.

3. The large stacker safety protection device according to claim 2, characterized in that: The grating sensor (12) is fixed on both sides of the protective door frame via an L-shaped bracket (126).

4. The large stacker safety protection device according to claim 3, characterized in that: The grating sensor (12) comprises a light emitter (124) and a light receiver (125), and the light emitter (124) and the light receiver (125) are arranged opposite to each other.

5. The large stacker safety protection device according to claim 1, characterized in that: The emergency action mechanism (2) comprises a fixed bracket (21) and a reflective sheet (26); a guide rod (22) is provided on the upper portion of the fixed bracket (21); the guide rod (22) is sleeved with a travel cylinder (23); the travel cylinder (23) is connected to a light shielding plate (25) via a connecting plate (24); and the reflective sheet (26) is provided behind the light shielding plate (25).

6. The large stacker safety protection device according to claim 5, characterized in that: The laser emitting mechanism (3) comprises a laser stacker (31), a lower guide rail (32), an upper guide rail (33), a cross brace (34), and a laser emitter (35). The laser emitter (35) and the center point of the reflective sheet (26) are arranged on the same straight line. The upper guide rail (33) is fixed to the shelves (5) on both sides through the cross brace (34), and the lower guide rail (32) is fixed to the ground on one side of the stacker (31).

7. The large stacker safety protection device according to claim 6, characterized in that: The reflective sheet (26) is a long-distance reflective film, which is formed by sticking the long-distance reflective film on a reflective plate.

8. The large stacker safety protection device according to claim 6, characterized in that: The reflective sheet (26) is fixed below the fixed bracket (21), and the laser emitter (35) emits laser light through below the fixed bracket (21) to the reflective sheet (26), and can reflect the laser light back to the laser emitter (35).

9. The large stacker safety protection device according to claim 1, characterized in that: The control mechanism (4) is fixed to the side of the protective fence (11), and the control mechanism (4) includes a PLC control box. The PLC control box is connected to the emergency action mechanism (2) and the safety detection mechanism (1), and can receive a trigger signal from the safety detection mechanism (1) and issue an emergency braking instruction to the emergency action mechanism (2).

10. The large stacker safety protection device according to claim 1, characterized in that: The safety protection device is combined with the shelf (5) to provide all-round sealing protection for the entire stacker (31).

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