A telescopic forklift with anti-collision device

Abstract

This utility model discloses a telescopic fork with an anti-collision device, belonging to the field of telescopic fork technology. It includes a fork body and a fork sleeve that can telescopically slide on the fork body, and further includes: an elastic buffer mechanism disposed between the fork body and the fork sleeve, used to provide cushioning when the fork sleeve retracts upon impact; and a sensing trigger mechanism, including a sensor disposed within the fork sleeve and a trigger element disposed on the fork body and cooperating with the sensor. This telescopic fork with an anti-collision device, by incorporating the elastic buffer mechanism and the sensing trigger mechanism, not only absorbs part of the impact energy through the elastic deformation of the spring when the fork tip collides, thus buffering the impact and reducing damage to the fork itself, goods, and storage equipment; but also, the retraction caused by the collision immediately triggers the sensor to activate an alarm, promptly alerting operators or the control system to prevent more serious accidents.

Description

Technical Field

[0001] This utility model relates to the field of telescopic fork technology, specifically a telescopic fork with an anti-collision device. Background Technology

[0002] Telescopic forks are key components of core equipment such as stacker cranes and shuttles in automated warehouses and intelligent logistics systems, used to achieve precise storage and retrieval of goods. During automated operations, due to slight deviations in system positioning, improper placement of goods, or sudden abnormalities, the forks may collide with shelves, pallets, or goods when extending or retracting at high speed.

[0003] However, most existing conventional telescopic forks are rigid structures. In the event of a collision, the powerful impact force is directly transmitted, easily causing damage to the forks, goods, or racking. Furthermore, these forks typically lack collision detection devices, resulting in the inability to generate immediate alarm signals upon a collision, hindering timely response and posing significant safety hazards and equipment damage risks.

[0004] Therefore, existing telescopic forks generally lack sufficient protection when facing collision risks. How to provide a telescopic fork that can effectively buffer impact forces to protect equipment and goods in the event of a collision, and simultaneously and reliably trigger alarm signals to achieve real-time early warning, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a telescopic fork with an anti-collision device. By setting up an elastic buffer mechanism and a sensor triggering mechanism, when a collision occurs at the front end of the fork, not only can the elastic deformation of the spring absorb part of the impact energy, playing a buffering role and reducing the impact damage to the fork itself, goods, and storage equipment; at the same time, the retraction caused by the collision will immediately trigger the sensor to start the alarm, promptly issuing an alert to the operator or control system to avoid more serious accidents, thus solving the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a telescopic fork with an anti-collision device, comprising a fork body and a fork sleeve that can telescopically slide on the fork body, and further comprising:

[0007] An elastic buffer mechanism is provided between the fork body and the fork sleeve to provide cushioning when the fork sleeve contracts upon impact.

[0008] The sensing triggering mechanism includes a sensor disposed inside the fork sleeve and a triggering element disposed on the fork body and cooperating with the sensor;

[0009] An alarm is installed inside the fork sleeve and electrically connected to the sensor; when the fork sleeve is impacted and retracts relative to the fork body, the sensor is triggered by the triggering element, thereby activating the alarm.

[0010] Preferably, the elastic buffer mechanism includes:

[0011] A movable plate is fixed inside the fork sleeve;

[0012] A push rod, one end of which is fixed to the fork body, and the other end of which passes through the movable plate;

[0013] A spring is sleeved on the outside of the push rod, with its two ends abutting against the fork body and the movable plate, respectively.

[0014] Preferably, the trigger is fixedly connected to one side of the movable plate.

[0015] Preferably, the sensor is a limit switch, and the trigger is a contact protrusion that abuts against the limit switch.

[0016] Preferably, the fork sleeve has an internal mounting groove, in which a mounting block is detachably mounted, and the sensor and the alarm are both mounted on the mounting block.

[0017] Preferably, the upper end of the mounting block is provided with a cover plate, which is fixedly connected to the fork sleeve and the mounting block by a positioning pin.

[0018] Preferably, the side wall of the fork sleeve is provided with a through hole corresponding to the position of the alarm, for sound transmission, and a dustproof mesh is provided inside the through hole.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The present invention relates to a telescopic fork with an anti-collision device. By setting up an elastic buffer mechanism and a sensor triggering mechanism, when a collision occurs at the front end of the fork, it can not only absorb part of the impact energy by utilizing the elastic deformation of the spring to play a buffering role and reduce the impact damage to the fork itself, the goods and the storage equipment; at the same time, the contraction caused by the collision will immediately trigger the sensor to start the alarm, promptly issuing an alarm to the operator or control system to avoid more serious accidents.

[0021] 2. The present invention provides a telescopic fork with an anti-collision device. The mounting block is fixed by a cover plate and a positioning pin. When it is necessary to repair or replace the vulnerable electronic components on the mounting block, simply open the cover plate and take out the mounting block, which simplifies the maintenance process. The alarm is provided with a through hole with a dustproof net at the corresponding position, which not only ensures that the alarm sound can be clearly transmitted, but also effectively prevents dust and debris from entering the interior of the fork and corroding the electronic components, thus extending the service life of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the telescopic fork with anti-collision device of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the telescopic fork with anti-collision device of this utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the telescopic fork with anti-collision device of this utility model. Figure 3 ;

[0025] Figure 4 This is a schematic diagram of the structure of the telescopic fork with anti-collision device of this utility model. Figure 4 .

[0026] In the diagram: 1. Fork body; 2. Fork sleeve; 3. Anti-collision block; 4. Movable plate; 5. Slider; 6. Push rod; 7. Spring; 8. Fixed plate; 9. Trigger; 10. Mounting block; 11. Alarm; 12. Sensor; 13. Cover plate; 14. Positioning pin; 15. Through hole; 16. Mounting slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 This embodiment provides the following technical solution:

[0029] A telescopic fork with an anti-collision device includes a fork body 1 and a fork sleeve 2 that can slide telescopically on the fork body 1. In this embodiment, the fork sleeve 2 is slidably fitted onto the outside of the fork body 1 via a slider 5, thereby realizing the telescopic function of the fork. An anti-collision block 3 is also provided on the flat head side of the fork sleeve 2, which is used to make initial contact with the obstacle and disperse the impact force in the event of a collision.

[0030] A movable plate 4 is fixedly welded inside the fork sleeve 2, and a push rod 6 is fixedly installed on one side of the fork body 1. The rod 6 passes through the movable plate 4, and a fixed plate 8 fixed to the fork sleeve 2 is connected to its end after passing through the movable plate 4. A contact protrusion serving as a trigger element 9 is fixedly provided on the fixed plate 8.

[0031] A spring 7, which serves as an elastic buffer element, is fitted around the outside of the push rod 6. The two ends of the spring 7 abut against the fork body 1 and the movable plate 4, respectively.

[0032] To implement collision alarm, the fork sleeve 2 has an internal mounting groove 16, in which a removable mounting block 10 is installed. The alarm 11 and the limit switch, which serves as the sensor 12, are both integrated and mounted on the mounting block 10. The limit switch is positioned directly opposite the trigger 9, but a preset safety gap is maintained between them under normal conditions.

[0033] To facilitate installation and subsequent maintenance, the upper end of the mounting block 10 is provided with a cover plate 13. The cover plate 13 is positioned and fixed with the fork sleeve 2 and the mounting block 10 by a positioning pin 14, ensuring the stability and maintainability of the internal components.

[0034] To ensure the alarm signal is clearly audible, through holes 15 are provided on both sides of the fork sleeve 2, corresponding to the positions of the alarm 11, for sound conduction. Additionally, to prevent dust and debris from the working environment from entering the alarm 11, a dustproof mesh is affixed to the inside of the through holes 15.

[0035] Working principle: During normal operation, the fork sleeve 2 extends or retracts on the fork body 1. At this time, the spring 7 is in a natural or pre-tensioned state, and its elastic force keeps the movable plate 4 in a preset position, with the fork sleeve 2 maintaining its maximum extended state relative to the fork body 1. There is a preset safety gap between the sensor 12 installed inside the fork sleeve 2 and the trigger 9 fixed on the fork body 1, so the two do not contact each other, and the alarm 11 does not work.

[0036] When the anti-collision block 3 at the tip of the fork or the head of the fork sleeve 2 impacts goods, shelves, or other obstacles, the impact force forces the fork sleeve 2 to retract rearward relative to the fork body 1. During this process, the movable plate 4 fixed inside the fork sleeve 2 moves rearward and compresses the spring 7 between it and the fork body 1. The compression of the spring 7 absorbs a large amount of impact energy, providing effective cushioning protection.

[0037] As the fork sleeve 2 retracts backward, the sensor 12 installed inside it also moves backward. When the retraction displacement reaches a preset value, the limit switch is pressed down by the contact lug, the sensor 12 is triggered, its internal circuit is connected, and the alarm 11 electrically connected to it is immediately activated;

[0038] After alarm 11 is activated, it emits an alarm signal via a buzzer, the sound transmitted through through hole 15, alerting the operator or automatic control system that a collision has occurred ahead and immediate action should be taken. When the forklift reverses, the restoring force of the compressed spring 7 pushes the movable plate 4, which in turn pushes the entire fork sleeve 2 forward, returning it to its original extended position. Sensor 12 then separates from trigger 9, the alarm signal is deactivated, the system automatically resets, and it is ready for the next operation.

[0039] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A telescopic fork with an anti-collision device, comprising a fork body (1) and a fork sleeve (2) retractably sliding on the fork body (1), characterized in that, Also includes: An elastic buffer mechanism is provided between the fork body (1) and the fork sleeve (2) to provide buffering when the fork sleeve (2) is impacted and retracted; The sensing triggering mechanism includes a sensor (12) disposed in the fork sleeve (2) and a trigger (9) disposed on the fork body (1) and cooperating with the sensor (12). An alarm (11) is installed inside the fork sleeve (2) and electrically connected to the sensor (12); when the fork sleeve (2) is impacted and retracts relative to the fork body (1), the sensor (12) is triggered by the trigger (9), thereby activating the alarm (11).

2. The telescopic fork with anti-collision device according to claim 1, characterized in that, The elastic buffer mechanism includes: The movable plate (4) is fixed inside the fork sleeve (2); Push rod (6), one end of which is fixed to the fork body (1), and the other end passes through the movable plate (4); A spring (7) is sleeved on the outside of the push rod (6), with its two ends abutting against the fork body (1) and the movable plate (4) respectively.

3. The telescopic fork with anti-collision device according to claim 2, characterized in that, The trigger (9) is fixedly connected to one side of the movable plate (4).

4. The telescopic fork with anti-collision device according to claim 1, characterized in that, The sensor (12) is a limit switch, and the trigger (9) is a contact protrusion that abuts against the limit switch.

5. The telescopic fork with anti-collision device according to claim 1, characterized in that, The fork sleeve (2) has an internal mounting groove (16), and a mounting block (10) is detachably installed in the mounting groove (16). The sensor (12) and the alarm (11) are both mounted on the mounting block (10).

6. The telescopic fork with anti-collision device according to claim 5, characterized in that, The mounting block (10) is provided with a cover plate (13) at its upper end. The cover plate (13) is fixedly connected to the fork sleeve (2) and the mounting block (10) by a positioning pin (14).

7. The telescopic fork with anti-collision device according to claim 1, characterized in that, The fork sleeve (2) has a through hole (15) on its side wall corresponding to the position of the alarm (11) for sound transmission. The through hole (15) is provided with a dustproof net.

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