Stacker crane safety protection system and stacker crane

Abstract

The utility model belongs to the technical field of material storage, and discloses a stacker crane safety protection system and a stacker crane. The safety protection system of the stacker crane comprises a limiting baffle, a control unit and a monitoring unit, a pallet unloading area is arranged on one side of a pallet placing table, the pallet unloading area is used for allowing a forklift to drive in and unloading pallets to the pallet placing table, and the limiting baffle is arranged in the pallet unloading area and can abut against the forklift; the control unit is electrically connected with the stacker crane and can control the stacker crane to stop; the detection unit comprises a sensing assembly and a correlation sensor, the sensing assembly is electrically connected with the control unit, and the sensing assembly is used for recognizing the forklift and transmitting a signal to the control unit; the correlation sensor comprises a transmitting end and a receiving end which are oppositely arranged at the end, facing the pallet unloading area, of the pallet containing table, the receiving end is electrically connected with the control unit, and the receiving end can transmit signals to the control unit. The stacker crane can detect objects except for a forklift and automatically stop, so that the safety in the stacking process is improved.

Description

Technical Field

[0001] The utility model relates to the field of material storage, in particular to a palletizer safety protection system and a palletizer. Background Art

[0002] Palletizers are a type of automated material handling equipment commonly used in the warehousing field. They are mainly used at the end of production lines or in logistics warehousing. They mainly use forklifts to stack pallets, and use conveyor belts to place goods on the stacked pallets and transport them to the next processing link.

[0003] As the palletizer occupies a large area and some of its facilities are exposed, injuries often occur during the use of the palletizer due to negligence of personnel approaching the palletizer. At the same time, when workers are driving forklifts, they are often damaged because they are too close to the palletizer. Utility Model Content

[0004] The utility model aims to provide a palletizer safety protection system and a palletizer, which can detect objects other than forklifts and automatically stop the machine, so as to improve the safety of the palletizing process.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a palletizer safety protection system, comprising:

[0007] A limit baffle, one side of the pallet placement platform is provided with a pallet unloading area, the pallet unloading area is used for a forklift to enter and unload the pallet onto the pallet placement platform, the limit baffle is arranged in the pallet unloading area, the limit baffle can abut against the forklift to keep a safe distance between the forklift and the pallet placement platform;

[0008] A control unit, the control unit is electrically connected to the palletizer, and the control unit can control the palletizer to stop;

[0009] A detection unit, the detection unit comprising a sensing component and a beam sensor, the sensing component being electrically connected to the control unit, the sensing component being used to identify the forklift and transmit a signal to the control unit;

[0010] The through-beam sensor comprises a transmitting end and a receiving end which are arranged relatively at one end of the pallet placement platform toward the unloading area, the receiving end is electrically connected to the control unit, and the receiving end can transmit a signal to the control unit.

[0011] Preferably, the palletizer safety protection system further comprises a high-limiting rod, which is arranged on the pallet placement platform in an adjustable height, and the high-limiting rod can abut against the pallet in the height direction.

[0012] Preferably, the sensing component comprises a first detection device, the first detection device is disposed on the pallet placement table, the first detection device is electrically connected to the control unit, and the first detection device is used to detect the forklift and transmit a signal to the control unit.

[0013] Preferably, the first detection device is a diffuse reflection photoelectric sensor.

[0014] Preferably, the sensing component includes a second detection device, which is arranged in the pallet unloading area on the side of the limit baffle away from the pallet placement table, and the second detection device is electrically connected to the control unit, and is used to detect the forklift and transmit a signal to the control unit.

[0015] Preferably, the second detection device is a geomagnetic sensor.

[0016] A palletizer, comprising the above-mentioned palletizer safety protection system.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a palletizer safety protection system, in which a pallet unloading area for a forklift to enter and unload the pallet is arranged on one side of the pallet placement platform, and since a limit baffle is arranged on the pallet unloading area, the limit baffle can abut against the forklift to keep a certain safety distance between the forklift and the pallet placement platform, thereby preventing the forklift from overstepping and causing damage to the palletizer; since a transmitting end and a receiving end of a through-beam sensor are arranged oppositely at one end of the pallet placement platform, the through-beam sensor can detect an object approaching the pallet placement platform from the pallet unloading area; the induction component is used to identify the forklift, and since the induction component is electrically connected to the control unit and the induction component can transmit a signal to the control unit, the receiving end of the through-beam sensor is also connected to the control unit. The control unit is electrically connected and can output a signal to the control unit. When the control unit receives a signal from the sensing component identifying a forklift and a signal from the through-beam sensor detecting an object, it indicates that the forklift is close to the pallet placement table for normal pallet unloading operations. At this time, the control unit does not operate and the palletizer operates normally. If the control unit does not receive a signal from the sensing component identifying a forklift and receives a signal from the through-beam sensor detecting an object, it indicates that an object other than a forklift is close to the pallet placement table. At this time, the control unit controls the palletizer to stop, thereby avoiding the collision between the palletizer and the object in the non-operating state to damage the palletizer or the object, thereby improving the safety of the palletizing process.

[0019] The palletizer provided by the utility model can accurately detect forklifts and other objects, and can automatically stop when it is recognized that an object other than a forklift is close to the running palletizer, thereby protecting the palletizer and the object and ensuring the safety of the palletizing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view of a palletizer safety protection system provided by a specific implementation method of the utility model.

[0021] In the figure:

[0022] 100-Pallet placement table;

[0023] 200-Forklift;

[0024] 300-pallet;

[0025] 1-Limiting baffle;

[0026] 2-detection unit; 21-sensing component; 211-first detection device; 212-second detection device; 22-reflection sensor; 221-transmitter; 222-receiver;

[0027] 3-Limited to high-end poles. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1 As shown, the utility model provides a palletizer safety protection system, which includes a limit baffle 1, a control unit and a detection unit 2. One side of the pallet placement platform 100 is provided with a pallet unloading area, and the pallet unloading area is used for a forklift 200 to enter and unload the pallet 300 from the pallet placement platform 100. The limit baffle 1 is arranged in the pallet unloading area, and the limit baffle 1 can abut against the forklift 200 to maintain a safe distance between the forklift 200 and the pallet placement platform 100. In this embodiment, a pallet unloading area is provided on one side of the pallet placement platform 100 for a forklift 200 to enter and unload the pallet 300. Since a limit baffle 1 is provided in the pallet unloading area, the limit baffle 1 can abut against the forklift 200 to maintain a certain safety distance between the forklift 200 and the pallet placement platform 100, thereby preventing the forklift 200 from overstepping and causing damage to the palletizer; specifically, the limit baffle 1 is fixed on the ground, and the limit baffle 1 can be a rectangular structure, or a triangle or other irregular structure, as long as it can block the wheels of the forklift 200, and no limitation is made here.

[0033] The control unit is electrically connected to the palletizer, and the control unit can control the palletizer to stop; the detection unit 2 includes a sensing component 21 and a beam sensor 22, the sensing component 21 is electrically connected to the control unit, and the sensing component 21 is used to identify the forklift 200 and transmit a signal to the control unit; the beam sensor 22 includes a transmitting end 221 and a receiving end 222 which are relatively arranged at one end of the pallet placement table 100 facing the unloading area, the receiving end 222 is electrically connected to the control unit, and the receiving end 222 can transmit a signal to the control unit. In this embodiment, since the transmitting end 221 and the receiving end 222 of the through-beam sensor 22 are disposed opposite to each other at one end of the pallet placement platform 100, the through-beam sensor 22 can detect an object approaching the pallet placement platform 100 from the unloading area; the sensing component 21 is used to identify the forklift 200. Since the sensing component 21 is electrically connected to the control unit and the sensing component 21 can transmit a signal to the control unit, the receiving end 221 of the through-beam sensor 22 is also electrically connected to the control unit and can output a signal to the control unit. When the control unit receives the signal that the sensing component 21 identifies the forklift 200 and receives the signal that the through-beam sensor 22 detects After the control unit receives the signal of the object, it means that the forklift 200 is close to the pallet placement platform 100 to perform normal unloading of the pallet 300. At this time, the control unit does not work and the palletizer operates normally; the through-beam sensor 22 plays a role of protection detection. If the control unit does not receive the signal of the sensing component 21 identifying the forklift 200, and receives the signal of the through-beam sensor 22 detecting the object, it means that an object other than the forklift 200 is close to the pallet placement platform 100. At this time, the control unit controls the palletizer to stop, thereby avoiding the collision between the palletizer and the object in the non-operating state to damage the palletizer or the object, thereby improving the safety of the palletizing process. Specifically, the through-beam sensor 22 is a sensor commonly used in the art that uses photoelectric elements for detection, including a transmitting end 221 and a receiving end 222 installed at the same horizontal height. The transmitting end 221 can emit an infrared light source, and the receiving end 222 is used to receive the light emitted by the transmitting end 221. When there is an object blocking the receiving end 222 and the transmitting end 221, the light is cut off and cannot be received by the receiving end 222. At this time, the receiving end 222 can transmit an electrical signal to the control unit.

[0034] Furthermore, if Figure 1 As shown, the palletizer safety protection system also includes a high-limit rod 3, which is height-adjustably arranged on the pallet placement platform 100, and the high-limit rod 3 can abut against the pallet 300 in the height direction. In this embodiment, the high-limit rod 3 is arranged on the pallet placement platform 100, and the high-limit rod 3 is composed of a vertical upright pole and a cross bar arranged on the upright pole. The position of the cross bar on the upright pole is adjustable and fixed by a latch or a bolt. The staff can adjust the height of the cross bar according to the actual situation on site to adjust the limited height of the high-limit rod 3 to prevent the pallet 300 from being stacked too high and causing unstable stacking, thereby improving safety.

[0035] Furthermore, if Figure 1 As shown, the sensing component 21 includes a first detection device 211, which is arranged on the pallet placement platform 100, and is electrically connected to the control unit. The first detection device 211 is used to detect the forklift 200 and transmit a signal to the control unit. In this embodiment, the first detection device 211 is a photoelectric sensor or a proximity switch or other commonly used sensor in the art, which can detect the existence of an object and transmit an electrical signal to the outside. Specifically, the first detection device 211 is arranged on the pallet placement platform 100 and is used to detect the forklift 200 in the unloading area. When the first detection device 211 detects the forklift 200, it transmits a signal to the control unit.

[0036] Specifically, the first detection device 211 is a diffuse reflection photoelectric sensor. In this embodiment, the diffuse reflection photoelectric sensor is a commonly used photoelectric sensor, which determines the position and shape of the object by emitting light to the object and receiving the light reflected by the object. Therefore, the diffuse reflection photoelectric sensor can detect the object and identify the forklift 200 by detecting the size of the object, thereby ensuring the accuracy of the identification, thereby improving the reliability of the palletizer safety protection system.

[0037] Specifically, the sensing component 21 includes a second detection device 212, which is arranged in the unloading area on the side of the limit baffle 1 away from the pallet placement platform 100, and the second detection device 212 is electrically connected to the control unit. The second detection device 212 is used to detect the forklift 200 and transmit a signal to the control unit. In this embodiment, a second detection device 212 is also arranged on the ground of the unloading area, and the second detection device 212 is used to detect the forklift 200 and transmit a signal to the control unit. Specifically, the second detection device 212 cooperates with the first detection device 211, and both can detect the forklift 200 and transmit a signal to the control unit; only when the control unit receives the signals sent by the first detection device 211 and the second detection device 212, it proves that the sensing component 21 accurately identifies the forklift 200, and cooperates with the signal transmitted by the beam sensor 22, the control unit can accurately determine that the forklift 200 enters the unloading area to unload the pallet 300, avoiding the occurrence of human operation to shield a single detection device and cause a misjudgment, thereby improving the accuracy of the forklift 200 identification.

[0038] Specifically, the second detection device 212 is a geomagnetic sensor. In this embodiment, the second detection device 212 is set on the ground of the unloading area and close to the limit baffle 1. When the forklift 200 travels to the unloading area for unloading, the forklift 200 is located directly above the second detection device 212. The second detection device 212 can detect the object above and send a signal; specifically, the second detection device 212 is a geomagnetic sensor, which is a commonly used sensor in this field. It is based on Faraday's law of electromagnetic induction or the principle of magnetoresistance effect and can detect the presence of a vehicle. In another embodiment, the second detection device 212 is a radar detector that detects the presence of an object by receiving reflected wave frequencies.

[0039] The working process of the palletizer safety protection system provided in this embodiment is roughly as follows:

[0040] The staff drives the forklift 200 into the unloading area. When the forklift 200 arrives at the designated operation area, the wheels of the forklift 200 abut against the limit baffle 1 and are blocked, preventing the forklift 200 from running offside and damaging the palletizer; the first detection device 211 and the second detection device 212 will detect the forklift 200, thereby transmitting a signal to the control unit, and the through-beam sensor 22 will also detect the forklift 200 and transmit a signal to the control unit. At this time, the control unit does not operate, the palletizer operates normally, and the forklift 200 also unloads the pallet 300 from the pallet placement table 100 under the operation of the staff. It can be understood that only when the first detection device 211 and the second detection device 212 both transmit signals to the control unit, if the control unit receives the signal transmitted by the through-beam sensor 22 at this time, the control unit does not stop; in addition, when the first detection device 211 and the second detection device 212 do not transmit signals to the control unit or any detection device does not transmit signals to the control unit, if the control unit receives the signal transmitted by the through-beam sensor 22 at this time, the control unit controls the palletizer to stop.

[0041] The present embodiment further provides a palletizer, which includes the above-mentioned palletizer safety protection system, and can accurately identify the forklift 200 and other objects. When an object other than the forklift 200 is identified approaching the running palletizer, it can automatically stop, thereby protecting the palletizer and the object and ensuring the safety of the palletizing process.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Palletizer safety protection system, characterized in that: include: A limiting baffle (1), one side of the pallet placement platform (100) is provided with a pallet unloading area, the pallet unloading area is used for a forklift (200) to enter and unload the pallet (300) from the pallet placement platform (100), the limiting baffle (1) is arranged in the pallet unloading area, the limiting baffle (1) can abut against the forklift (200) to maintain a safe distance between the forklift (200) and the pallet placement platform (100); A control unit, the control unit is electrically connected to the palletizer, and the control unit can control the palletizer to stop; A detection unit (2), the detection unit (2) comprising a sensing component (21) and a beam sensor (22), the sensing component (21) being electrically connected to the control unit, the sensing component (21) being used to identify the forklift (200) and transmit a signal to the control unit; The through-beam sensor (22) comprises a transmitting end (221) and a receiving end (222) which are arranged relatively on one end of the pallet placement platform (100) facing the pallet unloading area, and the receiving end (222) is electrically connected to the control unit, and the receiving end (222) can transmit a signal to the control unit.

2. The palletizer safety protection system according to claim 1, characterized in that: The palletizer safety protection system further comprises a high-limit rod (3), wherein the high-limit rod (3) is arranged on the pallet placement platform (100) in an adjustable manner in height, and the high-limit rod (3) can abut against the pallet (300) in the height direction.

3. The palletizer safety protection system according to claim 1, characterized in that: The sensing component (21) comprises a first detection device (211), the first detection device (211) is arranged on the pallet placement platform (100), the first detection device (211) is electrically connected to the control unit, and the first detection device (211) is used to detect the forklift (200) and transmit a signal to the control unit.

4. The palletizer safety protection system according to claim 3, characterized in that: The first detection device (211) is a diffuse reflection photoelectric sensor.

5. The palletizer safety protection system according to claim 3, characterized in that: The sensing component (21) comprises a second detection device (212), the second detection device (212) being arranged in the pallet unloading area on the side of the limit baffle (1) away from the pallet placement platform (100), the second detection device (212) being electrically connected to the control unit, and the second detection device (212) being used to detect the forklift (200) and transmit a signal to the control unit.

6. The palletizer safety protection system according to claim 5, characterized in that: The second detection device (212) is a geomagnetic sensor.

7. Palletizer, characterized in that: The invention comprises the palletizer safety protection system as described in any one of claims 1 to 6.

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