Safety protection device and forklift

Abstract

The utility model relates to the technical field of carrying, and discloses a safety protection device and a forklift, the forklift comprises a pallet fork, and the safety protection device comprises a mounting seat, a safety protection device and a driving device, the collision piece is connected to the mounting base in a sliding mode, the collision piece can move relative to the mounting base so as to be switched between a natural state and a collision state, and the collision piece is provided with a trigger piece; the detection part is arranged on the mounting seat, when the collision part is in a natural state, the trigger part is in a detection range of the detection part, and when the collision part is collided to slide and is in a collision state, the trigger part leaves the detection range of the detection part; or when the collision piece is in the natural state, the trigger piece leaves the detection range of the detection piece, and when the collision piece slides due to collision and is in the collision state, the trigger piece is in the detection range of the detection piece; the detection piece can send a deceleration or braking signal to the forklift when detecting that the trigger piece is located outside the detection range of the detection piece or located in the detection range of the detection piece.

Description

Technical Field

[0001] This application relates to the field of material handling technology, and in particular to a safety protection device and a forklift. Background Technology

[0002] Automated Guided Vehicles (AGVs) are intelligent logistics equipment capable of autonomously navigating and transporting goods along pre-set paths without a human driver. AGV forklifts are a type of AGV specifically designed for handling palletized goods and are widely used in warehousing, production logistics, and other fields. AGV forklifts basically consist of a drive system, a lifting system, a control system, and a safety system. The working principle of an AGV forklift is that sensors collect environmental information, a central controller plans a path based on this information, and directs the AGV to move along the path. During the handling process, the AGV can automatically identify the location of the goods, perform pick-up and drop operations, and return to the waiting area after completing the task.

[0003] Most existing safety systems use sensors placed at the tips of the forks to detect the distance between the fork tips and obstacles in front. When the detected distance is less than a preset value, the sensor sends a signal to the forklift to instruct it to slow down or brake. However, the detection method of using sensors to detect the distance between the fork tips and obstacles often requires high sensor accuracy, resulting in poor feedback sensitivity of the safety system and difficulty in triggering the forklift to slow down or brake in a timely manner. Utility Model Content

[0004] This application discloses a safety protection device and a forklift that can ensure safety protection while having stable detection capabilities.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application disclose a safety protection device for a forklift, the forklift including forks, the safety protection device comprising:

[0006] Mounting bracket, the mounting bracket being mounted on the forks;

[0007] A collision element, which is slidably connected to the mounting base, is movable relative to the mounting base to switch between a natural state and a collision state, and is provided with a trigger element;

[0008] A detection element is disposed on the mounting base. When the collision element is in its natural state, the trigger element is within the detection range of the detection element. When the collision element is impacted and slides into the collision state, the trigger element leaves the detection range of the detection element. The detection element can send a deceleration or braking signal to the forklift when it detects that the trigger element has left the detection range of the detection element. Alternatively, when the collision element is in its natural state, the trigger element is outside the detection range of the detection element. When the collision element is impacted and slides into the collision state, the trigger element is within the detection range of the detection element. The detection element can send a deceleration or braking signal to the forklift when it detects that the trigger element is within the detection range of the detection element.

[0009] The detection element is a non-contact detection element. When the collision element is in the natural state and the collision state, neither the trigger element nor the detection element is in contact.

[0010] As an alternative implementation, the detection element is a photoelectric sensor or a magnetic sensor.

[0011] As an optional implementation, the safety protection device further includes an elastic reset member disposed between the mounting base and the impact member, the elastic reset member being capable of providing a reset force to the impact member to reset to the natural state.

[0012] As an optional implementation, both the elastic reset member and the detection member are single entities, and the elastic reset member and the detection member are located on opposite sides of the movement path of the collision member; or

[0013] The elastic reset member and the detection member are both one, and the elastic reset member and the detection member are located on the same side of the movement path of the collision member.

[0014] As an optional implementation, the safety protection device further includes a support rod disposed on the mounting base, the elastic reset member being sleeved on the support rod and abutting against the collision member, the elastic reset member being able to provide the reset force to the collision member.

[0015] In one optional embodiment, the collision member includes an abutment portion, the support rod is provided with a flange, one end of the elastic reset member abuts against the abutment portion, and the other end of the elastic reset member abuts against the flange.

[0016] As an alternative implementation, the trigger is adjustablely mounted on the collision member so that the distance between the trigger and the detection member is adjustable.

[0017] As an alternative implementation, the collision member further includes an extension on which the trigger member is adjustablely mounted.

[0018] As an alternative implementation, the trigger is threadedly engaged with the collision member. By rotating the trigger, the trigger can be driven to move along its own axial direction to adjust the distance between the trigger and the detection member.

[0019] In one optional implementation, the mounting base is provided with a mounting cavity, the trigger and the detection element are disposed in the mounting cavity, a portion of the collision element passes through the mounting base and extends into the mounting cavity, and another portion of the collision element is located outside the mounting cavity.

[0020] As an optional implementation, the collision member further includes a collision part and a guide part. The collision part is located outside the mounting cavity, one end of the guide part passes through the mounting base and extends into the mounting cavity, and the other end of the guide part is located outside the mounting cavity and connected to the collision part. The guide part is slidably connected to the mounting base.

[0021] As an optional implementation, the side of the collision portion opposite to the guide portion is provided with a convex arc surface.

[0022] As an optional implementation, the safety protection device further includes a guide member, which is disposed in the mounting cavity along the moving direction of the collision member, and the guide portion slides in cooperation with the guide member.

[0023] As an optional implementation, the mounting base further includes a guide groove, which is disposed on the side of the mounting base near the collision member and communicates with the mounting cavity. One end of the guide portion passes through the guide groove and extends into the mounting cavity.

[0024] As an alternative implementation, the mounting base includes a base plate and a plurality of sidewall portions disposed around the outer periphery of the base plate, the base plate and the plurality of sidewall portions forming the mounting cavity.

[0025] In one optional embodiment, the sidewall portion includes a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall and a fourth sidewall disposed opposite to each other. The first sidewall and the third sidewall are located on one side of the movement path of the collision member, and the second sidewall and the fourth sidewall are located on the other side of the movement path of the collision member. The first sidewall and the second sidewall are parallel to the movement path of the collision member. The end of the third sidewall away from the first sidewall is inclined toward the collision member, and the end of the fourth sidewall away from the second sidewall is inclined toward the collision member.

[0026] As an alternative implementation, the sidewall portion further includes a fifth sidewall, which is connected between the first sidewall and the second sidewall.

[0027] As an optional implementation, the side of the mounting base used to connect with the forks is an inclined surface, and the inclination angle of the inclined surface matches the inclination angle of the surface of the mounting base where the forks connect.

[0028] As an alternative implementation, the mounting base includes a first connecting portion and / or a second connecting portion for connecting the forks.

[0029] Secondly, embodiments of this application disclose a forklift, comprising:

[0030] Forklift body, wherein the forklift body is movable;

[0031] An action controller is electrically connected to the forklift body and is capable of controlling the movement of the forklift body;

[0032] Forks, which are mounted on the forklift body, are used for handling and carrying goods;

[0033] The safety protection device described in the first aspect is disposed at the end of the fork away from the forklift body, and the detection element of the safety protection device is electrically connected to the action controller.

[0034] Compared with the prior art, the beneficial effects of this application are:

[0035] Compared to protection mechanisms that use high-precision sensors to detect the distance between the fork tips and obstacles in front, the safety protection device disclosed in this application does not require high-precision detection of the distance between the fork tips and obstacles. It only needs to detect whether the trigger is within the detection range of the detection element to send a deceleration or braking signal to the forklift in a timely manner. The detection accuracy requirement of the detection element is lower. Moreover, the method of moving the trigger outside the detection range of the detection element or moving the trigger into the detection range of the detection element when it is hit is replaced by the method of detecting the distance between the fork tips and obstacles in front by sensors. This can ensure the safety protection effect while having stable detection capability. This can improve the sensitivity of the safety protection device and greatly reduce the occurrence of obstacles hitting the forklift.

[0036] Furthermore, the detection element of this application is a non-contact detection element, which does not rely on physical contact between the detection element and the trigger element. This non-contact detection element usually has a faster measurement speed, enabling the detection element to transmit detection signals to the forklift in a timely manner. Moreover, there is no contact or friction between the non-contact detection element and the trigger element, resulting in a longer service life and lower maintenance costs. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the forklift structure disclosed in the embodiments of this application;

[0039] Figure 2 This is a schematic diagram of the structure of the safety protection device disclosed in the embodiments of this application;

[0040] Figure 3 for Figure 2 Another structural diagram of the safety protection device in the image;

[0041] Figure 4 for Figure 2 Another structural diagram of the safety protection device in the image;

[0042] Figure 5 for Figure 2 A structural schematic diagram of the safety protection device from another perspective.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100-Safety protection device; 1-Mounting base; 11-Guide groove; 111-First connecting part; 12-Base plate; 13-Side wall part; 131-First side wall; 132-Second side wall; 133-Third side wall; 134-Fourth side wall; 135-Fifth side wall; 1351-Second connecting part; 135A-Mounting hole; 1A-Mounting cavity; 2-Collision member; 21-Abutting part; 211-Connecting hole; 22-Extension part; 221-Bent section; 23-Collision part; 231-Convex arc surface; 24-Guide part; 3-Trigger member; 4-Detection member; 5-Elastic reset member; 6-Support rod; 61-Flange; 7-Guide member; 200-Forklift; 201-Forklift body; 202-Forks. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In this application, the terms "upper," "lower," "inner," "vertical," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0047] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0050] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0051] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the forklift 200 disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the safety protection device 100 disclosed in the embodiments of this application.

[0052] In a first aspect, embodiments of this application disclose a safety protection device 100 for a forklift 200, the forklift 200 including forks 202, and the safety protection device 100 including:

[0053] Mounting base 1, mounting base 1 is mounted on fork 202;

[0054] The collision element 2 is slidably connected to the mounting base 1. The collision element 2 can move relative to the mounting base 1 to switch between a natural state and a collision state. The collision element 2 is provided with a trigger element 3.

[0055] Detector 4 is mounted on mounting base 1. When collision member 2 is in its natural state, trigger member 3 is within the detection range of detector 4. When collision member 2 is impacted and slides, trigger member 3 leaves the detection range of detector 4. Detector 4 can send a deceleration or braking signal to forklift 200 when it detects that trigger member 3 has left its detection range. Alternatively, when collision member 2 is in its natural state, trigger member 3 is outside the detection range of detector 4. When collision member 2 is impacted and slides, trigger member 3 is within the detection range of detector 4. Detector 4 can send a deceleration or braking signal to forklift 200 when it detects that trigger member 3 is within its detection range.

[0056] Among them, the detection component 4 is a non-contact detection component. When the collision component 2 is in the natural state and the collision state, neither the trigger component 3 nor the detection component 4 is in contact.

[0057] Specifically, the mounting base 1 is the support structure of the safety protection device 100. The mounting base 1 is installed on the fork tip of the fork 202 (i.e., the end of the fork 202 away from the forklift body 201 of the forklift 200); the collision element 2 is installed on the mounting base 1 and can be displaced when subjected to external force to sense external collisions or obstacles; the trigger element 3 is a mechanical or electronic component used to work in conjunction with the detection element 4; the detection element 4 is installed on the mounting base 1 and is electrically connected to the forklift 200. It is responsible for monitoring the status of the trigger element 3. When the trigger element 3 is detected to leave the detection range or enter the detection range, it transmits a signal to the forklift 200, and the forklift 200 decelerates or stops to ensure driving safety.

[0058] In one embodiment, when there is no obstacle or collision at the front end of the fork 202, the collision member 2 is stationary relative to the mounting base 1, the collision member 2 is in a natural state, the trigger member 3 is within the detection range of the detection member 4, and the forklift 200 travels normally according to the preset path.

[0059] When there is an obstacle at the front end of the fork 202, the collision member 2 collides with the obstacle and moves relative to the mounting base 1. The collision member 2 is in a collision state. The detection member 4 detects that the trigger member 3 has left the detection range of the detection member 4. The detection member 4 sends a deceleration or braking signal to the forklift 200, and the forklift 200 decelerates or brakes.

[0060] When the obstacle at the front of the fork 202 is removed, the collision member 2 returns to its natural state from the collision state because there is no obstacle in front of it. The trigger member 3 enters the detection range of the detection member 4, and the detection member 4 stops sending deceleration or braking signals to the forklift 200 so that when the forklift 200 encounters an obstacle again, the safety protection device 100 can work normally and the forklift 200 can decelerate or brake.

[0061] In another embodiment, when there is no obstacle or collision at the front end of the fork 202, the collision member 2 is stationary relative to the mounting base 1, the collision member 2 is in a natural state, the trigger member 3 is outside the detection range of the detection member 4, and the forklift 200 travels normally according to the preset path.

[0062] When there is an obstacle at the front end of the fork 202, the collision member 2 collides with the obstacle and moves relative to the mounting base 1. The collision member 2 is in a collision state. The detection member 4 detects that the trigger member 3 has entered the detection range of the detection member 4. The detection member 4 sends a deceleration or braking signal to the forklift 200, and the forklift 200 decelerates or brakes.

[0063] When the obstacle at the front of the fork 202 is removed, the collision element 2 returns to its natural state from the collision state because there is no obstacle in front of it. The trigger element 3 leaves the detection range of the detection element 4, and the detection element 4 stops sending deceleration or braking signals to the forklift 200 so that when the forklift 200 encounters an obstacle again, the safety protection device 100 can work normally and the forklift 200 can decelerate or brake.

[0064] Compared to a protection mechanism that uses a high-precision sensor to detect the distance between the fork tip of the fork 202 and the obstacle in front, the safety protection device 100 disclosed in this application does not require high-precision detection of the distance between the fork tip of the fork 202 and the obstacle in front. It only needs to detect whether the trigger 3 is within the detection range of the detection device 4, or whether the trigger 3 is outside the detection range of the detection device 4, to promptly send a deceleration or braking signal to the forklift 200. The detection accuracy requirement of the detection device 4 is lower. Moreover, the method of using the collision member 2 to move the trigger 3 outside the detection range of the detection device 4 when it is hit, or the collision member 2 to move the trigger 3 into the detection range of the detection device 4 when it is hit, instead of using a sensor to detect the distance between the fork tip of the fork 202 and the obstacle in front, can ensure the safety protection effect while having a stable detection capability. This can improve the sensitivity of the safety protection device 100 and greatly reduce the occurrence of obstacles hitting the forklift 200.

[0065] Furthermore, the detection element 4 of this application is a non-contact detection element, which does not rely on physical contact between the detection element 4 and the trigger element 3. This non-contact detection element usually has a faster measurement speed, enabling the detection element 4 to transmit the detection signal to the forklift 200 in a timely manner. Moreover, there is no contact or friction between the non-contact detection element and the trigger element 3, resulting in a longer service life and lower maintenance costs.

[0066] For example, the detection element 4 described above may be a photoelectric sensor or a magnetic sensor. When the aforementioned detection element 4 is a magnetic sensor, the aforementioned trigger element 3 can be a metal part. Taking the detection range of the detection element 4 as a circle with a radius of 2mm as an example, when the distance between the trigger element 3 and the center of the detection range of the detection element 4 is less than 2mm, the detection element 4 determines that the collision element 2 is in a natural state by detecting the presence of metal in the trigger element 3 within the magnetic field. When the distance between the trigger element 3 and the center of the detection range of the detection element 4 is greater than 2mm, the detection element 4 can detect changes within the magnetic field to determine that the collision element 2 is in a collision state. The detection element 4 sends a signal to the forklift 200, and the forklift 200 decelerates or brakes. Alternatively, when the distance between the trigger element 3 and the center of the detection range of the detection element 4 is greater than 2mm, the detection element 4 determines that the collision element 2 is in a natural state by detecting the absence of metal in the trigger element 3 within the magnetic field. When the distance between the trigger element 3 and the center of the detection range of the detection element 4 is less than 2mm, the detection element 4 can detect changes within the magnetic field to determine that the collision element 2 is in a collision state. The detection element 4 sends a signal to the forklift 200, and the forklift 200 decelerates or brakes. This application does not limit the selection of the detection element 4 and the trigger element 3.

[0067] For example, the collision element 2 can be returned to its natural state manually. When the obstacle at the front of the fork 202 leaves, the collision element 2 does not return to its natural state. The trigger element 3 is outside the detection range of the detection element 4, or the trigger element 3 is within the detection range of the detection element 4. The forklift 200 continues to decelerate or brake. After the collision element 2 is returned to its natural state manually, the collision element 2 drives the trigger element 3 to reset, so that when the forklift 200 encounters an obstacle again, the safety protection device 100 can work normally and the forklift 200 can decelerate or brake.

[0068] For example, the way the collision element 2 returns to its natural state can also be reset by setting the elastic reset element 5, see [link to relevant documentation]. Figure 2 and Figure 3 , Figure 3 for Figure 2 Another structural schematic diagram of the safety protection device 100 is shown. The safety protection device 100 also includes an elastic reset member 5, which is disposed between the mounting base 1 and the collision member 2. The elastic reset member 5 can provide a reset force to the collision member 2 to reset to its natural state.

[0069] In one embodiment, when there is an obstacle at the front end of the fork 202, the collision member 2 collides with the obstacle, the collision member 2 moves relative to the mounting base 1, the collision member 2 changes from a natural state to a collision state, the elastic reset member 5 is deformed by the pressure applied by the collision member 2, the detection member 4 detects that the trigger member 3 has left the detection range, the detection member 4 sends a deceleration or braking signal to the forklift 200, and the forklift 200 decelerates or brakes.

[0070] When the obstacle at the front of the fork 202 is removed, the collision member 2 moves in the opposite direction relative to the mounting base 1 under the elastic force of the elastic reset member 5 because there is no obstacle in front of it, so as to reset to the natural state, so that the trigger member 3 returns to the detection range of the detection member 4, so that when the forklift 200 encounters an obstacle again, the safety protection device 100 can work normally and the forklift 200 can decelerate or brake.

[0071] In another embodiment, when there is an obstacle at the front end of the fork 202, the collision member 2 collides with the obstacle, the collision member 2 moves relative to the mounting base 1, the collision member 2 changes from a natural state to a collision state, the elastic reset member 5 is deformed by the pressure applied by the collision member 2, the detection member 4 detects that the trigger member 3 has entered the detection range of the detection member 4, the detection member 4 sends a deceleration or braking signal to the forklift 200, and the forklift 200 decelerates or brakes.

[0072] When the obstacle at the front of the fork 202 is removed, the collision member 2 moves in the opposite direction relative to the mounting base 1 under the elastic force of the elastic reset member 5 because there is no obstacle in front of it, so as to reset to the natural state, so that the trigger member 3 leaves the detection range of the detection member 4, so that when the forklift 200 encounters an obstacle again, the safety protection device 100 can work normally and the forklift 200 can decelerate or brake.

[0073] Understandably, on the one hand, when the obstacle at the front of the fork 202 is removed, the elastic reset member 5 can automatically push the collision member 2 back to its natural state, simplifying the operation process and reducing the need for personnel and labor costs. On the other hand, the instantaneous response capability of the elastic reset member 5 means that when the obstacle is removed, the collision member 2 loses pressure on the elastic reset member 5, and the elastic reset member 5 can immediately restore its deformation and push the collision member 2 back to its natural state. The detection member 4 detects that the trigger member 3 has returned to the detection range, or the detection member 4 detects that the trigger member 3 has left the detection range of the detection member 4, and the forklift 200 continues to run according to the preset path. Through the elastic reset member 5, the forklift 200 will not be affected by the collision member 2 not being reset, thus ensuring the operating efficiency of the forklift 200.

[0074] Optionally, please refer to Figure 4 , Figure 4 for Figure 2The diagram shows the structure of the safety protection device 100 from another perspective. There is one elastic reset element 5 and one detection element 4. The elastic reset element 5 and the detection element 4 are located on opposite sides of the movement path of the collision element 2, or there is one elastic reset element 5 and one detection element 4, located on the same side of the movement path of the collision element 2.

[0075] It is understandable that when the elastic reset member 5 and the detection member 4 are located on the same side of the movement path of the collision member 2, the overall layout of the safety protection device 100 can be simplified, the space occupied can be reduced, and the safety protection device 100 can be made more compact. Compared with the elastic reset member 5 and the corresponding detection member 4 on both sides, the fewer components and the simpler structure mean lower manufacturing and assembly costs, and may also reduce long-term operation and maintenance costs.

[0076] The elastic reset member 5 and the detection member 4 are located on both sides of the moving path of the collision member 2, which can balance the weight and torque distribution inside the safety protection device 100, reduce the additional vibration or unnecessary structural stress that may be caused by the shift of the center of gravity, and better resist the eccentric force when the collision member 2 suffers non-positive impact, thus maintaining the stability of the safety protection device 100.

[0077] Furthermore, when the collision element 2 is subjected to force, the arrangement on both sides ensures a more uniform force transmission, which is beneficial to improving the smoothness of the reset process and the accuracy of the detection signal, thereby improving the overall performance. Compared to having elastic reset elements 5 and corresponding detection elements 4 on both sides of the collision element 2's movement path, which results in two elastic reset elements 5 and two detection elements 4, using only one elastic reset element 5 and one detection element 4 reduces the number of required components, lowering material and production costs. Fewer components mean fewer potential failure points, simplifying maintenance and repair processes and saving time and labor costs. On the other hand, fewer components make the safety protection device 100 lighter, improving its mobility and energy efficiency. Moreover, while ensuring basic functions, fewer components occupy less space, leaving more room for other components. This application does not limit the arrangement of the elastic reset element 5 and the detection element 4.

[0078] Optionally, please refer to Figure 3 and Figure 4 , Figure 3 for Figure 2 Another structural schematic diagram of the safety protection device 100 is shown. The safety protection device 100 also includes a support rod 6, which is disposed on the mounting base 1. The elastic reset member 5 is sleeved on the support rod 6 and abuts against the collision member 2.

[0079] For example, the support rod 6 can be a bolt, and the support rod 6 is threadedly connected to the mounting base 1. This application does not limit the choice of the support rod 6.

[0080] Specifically, the collision member 2 includes an abutment portion 21, which can be disposed at the end of the collision member 2 away from the obstacle. The abutment portion 21 is provided with a connecting hole 211, through which the support rod 6 is disposed. The support rod 6 is provided with a flange 61, one end of the elastic reset member 5 abuts against the abutment portion 21, and the other end of the elastic reset member 5 abuts against the flange 61.

[0081] In one embodiment, when the collision member 2 is in its natural state, one end of the elastic reset member 5 abuts against the abutment portion 21, and the other end abuts against the flange 61 of the support rod 6. The elastic reset member 5 does not deform and abuts against the abutment portion 21 to keep the collision member 2 in its natural state.

[0082] In another embodiment, when the collision member 2 changes from a natural state to a collision state due to a collision, the abutment part 21 pushes the elastic reset member 5 to deform the elastic reset member 5. The elastic reset member 5 is sleeved on the support rod 6, and the other end of the elastic reset member 5 abuts on the flange 61 to deform along the length direction of the support rod 6. When the collision member 2 leaves the natural state, the trigger member 3 leaves the detection range of the detection member 4, or the trigger member 3 enters the detection range of the detection member 4. The forklift 200 decelerates or brakes according to the signal detected by the detection member 4, the collision member 2 stops moving, and the elastic reset member 5 stops deforming.

[0083] In one embodiment, the collision member 2 leaves the obstacle, and the elastic reset member 5 returns to its original shape due to the absence of resistance. The elastic reset member 5 pushes the abutment part 21 to return to its original shape along the length direction of the support rod 6. When the elastic reset member 5 finishes its deformation, the collision member 2 is pushed to its natural state by the elastic reset member 5, and the forklift 200 continues to move along the preset route.

[0084] Understandably, when the impactor 2 deviates from its natural state, the elastic resetter 5 uses its own elasticity to provide the impactor 2 with the force to return to its natural state, ensuring that the impactor 2 can quickly return to its natural state after the collision. When the impactor 2 encounters a collision, the elastic resetter 5 absorbs and releases the impact energy through deformation, reducing the overall impact of the collision on the safety protection device 100 and protecting the safety protection device 100 from severe vibration damage.

[0085] It should be noted that the above-mentioned elastic reset element 5 can be a spring, rubber or other device that can provide a reset force and has good elasticity and shock absorption performance. This application does not limit the selection of the elastic reset element 5.

[0086] When the elastic reset element 5 is a spring, the material of the spring can be carbon spring steel wire, silicon manganese alloy spring steel wire, titanium alloy or plastic, etc., which have high strength and good toughness and can withstand a large number of variable loads, so as to reduce the impact of the elastic reset element 5 on the life of the safety protection device 100 and the maintenance cost after multiple deformations. This application does not limit the material of the spring.

[0087] Optionally, the trigger 3 can be adjustablely mounted on the collision member 2 so that the distance between the trigger 3 and the detection member 4 is adjustable. The adjustable trigger 3 allows the user to adjust the distance between the trigger 3 and the detection member 4 according to actual needs to adapt to different working environments and conditions.

[0088] The adjustable installation method allows for adjustment of the position of the trigger element 3 to ensure accurate triggering of the detection element 4 under various conditions. The adjustable trigger element 3 also ensures the working efficiency of the forklift 200. If the distance between the trigger element 3 and the detection element 4 is too large, it may lead to inaccurate detection or delayed triggering. By regularly checking and adjusting the position of the trigger element 3, it can be ensured that the detection element 4 and the trigger element 3 maintain optimal working condition, improving the reliability and stability of the safety protection device 100.

[0089] For example, the trigger 3 and the collision member 2 can be threaded together. By rotating the trigger 3, the trigger 3 can be moved along its own axis to adjust the distance between the trigger 3 and the detection member 4.

[0090] The threaded connection ensures the stability of the trigger element 3 during movement, preventing false triggering or response failure due to loosening. Furthermore, the rotation of the trigger element 3 is simple and intuitive, requiring no specialized tools, facilitating on-site debugging and maintenance, and saving time and costs.

[0091] It should be noted that the trigger 3 can be a screw or bolt, and the collision member 2 is provided with a threaded hole or other means that can achieve a threaded connection. This application does not limit the connection method between the trigger 3 and the collision member 2.

[0092] Optionally, please refer to Figure 3 and Figure 4 The collision member 2 also includes an extension 22. When the collision member 2 is in its natural state, the extension 22 extends to a preset position, and the trigger member 3 is adjustablely mounted on the extension 22.

[0093] When the collision component 2 is in its natural state, the trigger component 3 is within the detection range of the detection component 4, and the preset position is within the detection range of the detection component 4; when the collision component 2 is in its natural state, the trigger component 3 is outside the detection range of the detection component 4, and the preset position is outside the detection range of the detection component 4.

[0094] Optionally, the extension 22 is disposed at one end of the collision member 2, and the extension 22 and the abutment 21 are respectively disposed on opposite sides of the same end of the collision member 2. The fact that the extension 22 and the abutment 21 are respectively disposed on opposite sides of the same end of the collision member 2 can further balance the weight inside the safety protection device 100.

[0095] Optionally, please refer to Figure 4 The extension 22 has a bent section 221 in the middle. The bent section 221 bends away from the detection element 4. It can be understood that the bent section 221 bends away from the detection element 4 so that the end of the extension 22 where the trigger element 3 is located bends away from the detection element 4, thereby reserving more installation space for the detection element 4 and making the installation of the detection element 4 more convenient.

[0096] like Figure 3 As shown, in order to reduce the impact of collisions on the service life of the safety protection device 100, in the first aspect, the mounting base 1 is provided with a mounting cavity 1A, the trigger 3 and the detection element 4 are disposed in the mounting cavity 1A, a part of the collision element 2 passes through the mounting base 1 and extends into the mounting cavity 1A, and the other part of the collision element 2 is located outside the mounting cavity 1A.

[0097] The mounting cavity 1A provides physical protection for the trigger element 3 and the detection element 4, preventing them from being directly affected by the external environment, such as dust, moisture, and accidental collisions. This extends the service life of the trigger element 3 and the detection element 4 and ensures the stability and reliability of the safety protection device 100.

[0098] Optionally, the elastic reset member 5 may also be disposed within the mounting cavity 1A.

[0099] Specifically, the collision element 2 also includes a collision part 23 and a guide part 24. The collision part 23 is located outside the mounting cavity 1A. One end of the guide part 24 passes through the mounting base 1 and extends into the mounting cavity 1A, while the other end of the guide part 24 is located outside the mounting cavity 1A and connected to the collision part 23. The guide part 24 is slidably connected to the mounting base 1. The collision part 23, located outside the mounting cavity 1A, is the part of the collision element 2 that directly contacts the obstacle. The collision part 23 typically possesses high strength and toughness, capable of absorbing and dispersing the impact energy during a collision, preventing direct impact damage to the detection element 4 and the trigger element 3. The guide part 24 is slidably connected to the mounting base 1, guiding the collision part 23 to move along the correct path when a collision occurs. The guide part 24 ensures that the collision part 23 moves in a preset manner after being impacted, avoiding unnecessary deviation or vibration, and ensuring the effectiveness of the safety protection device 100.

[0100] On the other hand, the safety protection device 100 also includes a guide member 7, which is disposed in the mounting cavity 1A along the moving direction of the impact member 2, and the guide portion 24 slides in cooperation with the guide member 7. The guide member 7 ensures that the impact member 2 moves along a predetermined path after being subjected to force, avoiding deviation from the track and achieving stable and controllable energy absorption and release. By sliding in cooperation with the guide portion 24, friction between the impact member 2 and the guide member 7 is reduced, wear is decreased, and the service life of both the impact member 2 and the guide member 7 is extended.

[0101] Furthermore, the mounting base 1 also includes a guide groove 11, which is located on the side of the mounting base 1 near the impactor 2 and is connected to the mounting cavity 1A. One end of the guide portion 24 passes through the guide groove 11 and extends into the mounting cavity 1A. The matching of the guide portion 24 and the guide groove 11 ensures that the impactor 2 slides along a preset path when subjected to force, preventing the guide portion 24 from deviating from its track and ensuring the correct transmission and release of energy. The design of the guide groove 11 enhances the structural stability between the mounting cavity 1A and the impactor 2, maintaining good working condition even under high-intensity impact and reducing structural deformation.

[0102] Overall, the aforementioned mounting cavity 1A can prevent the triggering element 3 and the detection element 4 from being directly affected by the external environment. The guide part 24, the guide element 7 and the guide groove 11 work together to ensure that the collision element 2 can move along the preset moving path after a collision, avoiding the collision element 2 from deviating from the preset path due to non-frontal collision force, which would damage the internal components of the safety protection device 100 and extend the service life of the safety protection device 100. The collision part 23 can absorb and disperse the impact energy during the collision, protecting the safety protection device 100 from being damaged by the collision.

[0103] Optionally, please refer to Figure 3 The collision part 23 has a convex arc surface 231 on the side opposite to the guide part 24. Specifically, the convex arc surface 231 is curved towards the guide part 24. When the collision member 2 comes into contact with an obstacle that is not in front, the convex arc surface 231 on the side of the collision part 23 opposite to the guide part 24 allows the collision member 2 to come into contact with the obstacle on the side, so that the obstacle on the side can also push the collision member 2, thereby improving the sensitivity of the collision member 2 and reducing the occurrence of obstacles hitting and damaging the forklift 200 from the side.

[0104] In some embodiments, please refer to Figure 3 and Figure 4 The mounting base 1 includes a base plate 12 and a plurality of side wall portions 13 arranged around the outer periphery of the base plate 12, the base plate 12 and the plurality of side wall portions 13 forming a mounting cavity 1A.

[0105] The base plate 12 supports all components within the mounting cavity 1A, ensuring the stability of the safety protection device 100. The side wall 13 enhances the overall structural strength of the mounting base 1, forming a stable frame together with the base plate 12 to ensure the stability and rigidity of the safety protection device 100 and prevent deformation under external forces. The side wall 13 can withstand collisions and impacts from foreign objects on the outside, disperse and absorb external forces, and protect the internal components from damage. The base plate 12 and the side wall 13 together form the mounting cavity 1A, which can isolate external dust, moisture and other impurities, protect the internal components of the safety protection device 100 from corrosion, and extend its service life.

[0106] Specifically, the sidewall portion 13 includes a first sidewall 131 and a second sidewall 132 disposed opposite to each other, and a third sidewall 133 and a fourth sidewall 134 disposed opposite to each other. The first sidewall 131 and the third sidewall 133 are located on one side of the movement path of the collision member 2, and the second sidewall 132 and the fourth sidewall 134 are located on the other side of the movement path of the collision member 2. The first sidewall 131 and the second sidewall 132 are parallel to the movement path of the collision member 2. The end of the third sidewall 133 away from the first sidewall 131 is inclined towards the collision member 2, and the end of the fourth sidewall 134 away from the second sidewall 132 is inclined towards the collision member 2.

[0107] Optionally, please refer to Figure 3 and Figure 4 The aforementioned side wall portion 13 also includes a fifth side wall 135, which is connected between the first side wall 131 and the second side wall 132. The fifth side wall 135 strengthens the rigidity of the safety protection device 100, improves the stability and compressive strength of the mounting base 1, and prevents the mounting base 1 from deforming under high load or impact.

[0108] Optionally, the end of the fifth sidewall 135 away from the base plate 12 is inclined away from the collision member 2. The inclined fifth sidewall 135 is easier to manufacture and also saves space required for the safety protection device 100.

[0109] Specifically, the fifth side wall 135 is provided with a mounting hole 135A for avoiding the support rod 6. The support rod 6 can be installed on the mounting base 1 through the mounting hole 135A in a direction parallel to the base plate 12, making the installation of the support rod 6 more convenient and the maintenance cost lower.

[0110] For example, please refer to Figure 1 and Figure 5 , Figure 5 for Figure 2 A structural schematic diagram of the safety protection device 100 from another perspective. Figure 1This is a schematic diagram of the structure of the forklift 200 disclosed in the embodiments of this application. The side of the mounting base 1 used to connect with the forks 202 is an inclined surface, and the inclination angle of the inclined surface matches the inclination angle of the surface of the mounting base 1 connected to the forks 202, so that the collision member 2 extends in the horizontal direction when the mounting base 1 is installed on the forks 202.

[0111] The mounting base 1 has an inclined surface on its side for connecting to the fork 202, and the inclination angle of this inclined surface matches the inclination angle of the surface of the mounting base 1 on which the fork 202 connects. This ensures the accuracy of the safety protection function, avoids misjudgment or performance degradation caused by directional deviation, and reduces safety hazards. Specifically, the mounting base 1 is installed on the lower surface of the fork 202, and the inclination angle of this inclined surface matches the inclination angle of the lower surface of the fork 202. In one embodiment, the mounting base 1 includes a first connecting portion 111 for connecting the fork 202. One end of the first connecting portion 111 can be disposed on the groove wall of the guide groove 11, and the other end of the first connecting portion 111 is connected to the fork 202.

[0112] In one embodiment, the mounting base 1 includes a second connecting portion 1351 for connecting the forks 202. One end of the second connecting portion 1351 may be disposed at the end of the fifth side wall 135 away from the bottom plate 12, and the other end of the second connecting portion 1351 is connected to the forks 202.

[0113] In one embodiment, the mounting base 1 includes a first connecting portion 111 and a second connecting portion 1351 for connecting the forks 202. One end of the first connecting portion 111 may be disposed on the groove wall of the guide groove 11, and one end of the second connecting portion 1351 may be disposed on the end of the fifth side wall 135 away from the bottom plate 12. The first connecting portion 111 and the second connecting portion 1351 are connected to the forks 202.

[0114] The first connecting part 111 and the second connecting part 1351 can ensure that the safety protection device 100 can be positioned when it is installed on the fork 202, prevent installation deviation, and ensure a firm connection between the fork 202 and the mounting base 1.

[0115] Optionally, the first connecting part 111 and the second connecting part 1351 can be threaded to the fork 202. The embodiments of this application do not limit the connection method between the first connecting part 111 and the second connecting part 1351 and the fork 202.

[0116] Secondly, please refer to Figure 1 This application discloses a forklift 200, comprising:

[0117] Forklift body 201, forklift body 201 is movable;

[0118] Action controller (not shown in the figure) is electrically connected to the forklift body 201 and can control the movement of the forklift body 201.

[0119] Forks 202 are mounted on the forklift body 201 and are used to handle and carry goods.

[0120] The aforementioned safety protection device 100 is located at the end of the fork 202 away from the forklift body 201 (i.e., the fork tip of the fork 202), and the detection element 4 of the safety protection device 100 is electrically connected to the action controller.

[0121] Specifically, the motion controller can control the movement of the forklift body 201. When there is no obstacle in front of the forklift 200, the motion controller controls the forklift body 201 to travel normally along the preset path. At this time, the safety protection device 100 is in a natural state.

[0122] When there is an obstacle in front of the forklift 200 and the forks 202 collide with the obstacle, the safety protection device 100 is in a collision state. The collision component 2 in the safety protection device 100 drives the trigger component 3 to move due to the collision. The trigger component 3 leaves the detection range of the detection component 4, or the trigger component 3 enters the detection range of the detection component 4. The detection component 4 outputs a braking or deceleration signal to the motion controller, and the motion controller controls the forklift body 201 to decelerate or brake.

[0123] Optionally, both the forks 202 and the safety guards 100 include two forks 202, which are spaced apart on the forklift body 201, and each fork 202 is equipped with a corresponding safety guard 100. The two safety guards 100 increase the detection range of obstacles, further ensuring safety. Furthermore, if one safety guard 100 malfunctions, the other safety guard 100 can still function normally, increasing the safety performance of the forklift 200.

[0124] The structure of the safety protection device 100 can be the same as that of any of the safety protection devices 100 in the above embodiments, and can bring the same or similar beneficial effects. For details, please refer to the description of the safety protection device 100 in the above embodiments. This embodiment will not repeat the description here.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A safety protection device for a forklift, the forklift including forks, characterized in that, The safety protection device includes: Mounting bracket, the mounting bracket being mounted on the forks; A collision element, which is slidably connected to the mounting base, is movable relative to the mounting base to switch between a natural state and a collision state, and is provided with a trigger element; A detection element is disposed on the mounting base. When the collision element is in its natural state, the trigger element is within the detection range of the detection element. When the collision element is impacted and slides into the collision state, the trigger element leaves the detection range of the detection element. The detection element can send a deceleration or braking signal to the forklift when it detects that the trigger element has left the detection range of the detection element. Alternatively, when the collision element is in its natural state, the trigger element is outside the detection range of the detection element. When the collision element is impacted and slides into the collision state, the trigger element is within the detection range of the detection element. The detection element can send a deceleration or braking signal to the forklift when it detects that the trigger element is within the detection range of the detection element. The detection element is a non-contact detection element. When the collision element is in the natural state and the collision state, neither the trigger element nor the detection element is in contact.

2. The safety protection device according to claim 1, characterized in that, The detection device is a photoelectric sensor or a magnetic sensor.

3. The safety protection device according to claim 1, characterized in that, The safety protection device also includes an elastic reset member disposed between the mounting base and the collision member, the elastic reset member being able to provide the collision member with a reset force to reset to the natural state.

4. The safety protection device according to claim 3, characterized in that, There is one elastic reset member and one detection member, and the elastic reset member and the detection member are located on opposite sides of the movement path of the collision member; or The elastic reset member and the detection member are both one, and the elastic reset member and the detection member are located on the same side of the movement path of the collision member.

5. The safety protection device according to claim 3, characterized in that, The safety protection device also includes a support rod, which is disposed on the mounting base. The elastic reset member is sleeved on the support rod and abuts against the collision member. The elastic reset member can provide the reset force to the collision member.

6. The safety protection device according to claim 5, characterized in that, The collision member includes an abutting portion, the support rod is provided with a flange, one end of the elastic reset member abuts against the abutting portion, and the other end of the elastic reset member abuts against the flange.

7. The safety protection device according to claim 1, characterized in that, The trigger element is adjustablely mounted on the collision element so that the distance between the trigger element and the detection element is adjustable.

8. The safety protection device according to claim 7, characterized in that, The collision element also includes an extension, on which the trigger element is adjustablely mounted.

9. The safety protection device according to claim 7, characterized in that, The trigger is threadedly engaged with the collision member. By rotating the trigger, the trigger can be driven to move along its own axis to adjust the distance between the trigger and the detection member.

10. The safety protection device according to claim 1, characterized in that, The mounting base is provided with a mounting cavity, the trigger and the detection are disposed in the mounting cavity, a part of the collision member passes through the mounting base and extends into the mounting cavity, and the other part of the collision member is located outside the mounting cavity.

11. The safety protection device according to claim 10, characterized in that, The collision component further includes a collision part and a guide part. The collision part is located outside the mounting cavity. One end of the guide part passes through the mounting base and extends into the mounting cavity. The other end of the guide part is located outside the mounting cavity and is connected to the collision part. The guide part is slidably connected to the mounting base.

12. The safety protection device according to claim 11, characterized in that, The collision part has a convex arc surface on the side opposite to the guide part.

13. The safety protection device according to claim 11, characterized in that, The safety protection device also includes a guide member, which is disposed in the mounting cavity along the moving direction of the collision member, and the guide portion slides in cooperation with the guide member.

14. The safety protection device according to claim 11, characterized in that, The mounting base also includes a guide groove, which is disposed on the side of the mounting base near the collision member and is connected to the mounting cavity. One end of the guide portion passes through the guide groove and extends into the mounting cavity.

15. The safety protection device according to claim 10, characterized in that, The mounting base includes a base plate and a plurality of sidewall portions arranged around the outer periphery of the base plate, the base plate and the plurality of sidewall portions forming the mounting cavity.

16. The safety protection device according to claim 15, characterized in that, The sidewall portion includes a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall and a fourth sidewall disposed opposite to each other. The first sidewall and the third sidewall are located on one side of the movement path of the collision member, and the second sidewall and the fourth sidewall are located on the other side of the movement path of the collision member. The first sidewall and the second sidewall are parallel to the movement path of the collision member. The end of the third sidewall away from the first sidewall is inclined towards the collision member, and the end of the fourth sidewall away from the second sidewall is inclined towards the collision member.

17. The safety protection device according to claim 16, characterized in that, The sidewall portion further includes a fifth sidewall, which is connected between the first sidewall and the second sidewall.

18. The safety protection device according to claim 1, characterized in that, The side of the mounting base used to connect with the forks is an inclined surface, and the inclination angle of the inclined surface matches the inclination angle of the surface of the mounting base where the forks connect.

19. The safety protection device according to claim 1, characterized in that, The mounting base includes a first connecting portion and / or a second connecting portion for connecting the forks.

20. A forklift, characterized in that, include: Forklift body, wherein the forklift body is movable; An action controller is electrically connected to the forklift body and is capable of controlling the movement of the forklift body; Forks, which are mounted on the forklift body, are used for handling and carrying goods; The safety protection device as described in any one of claims 1-19 is disposed at the end of the fork away from the forklift body, and the detection element of the safety protection device is electrically connected to the action controller.

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