CN214990052U

CN214990052U - Safety stop device for automatic forklift

Info

Publication number: CN214990052U
Application number: CN202121401049.XU
Authority: CN
Inventors: 汪学乾
Original assignee: Shanghai Xiangong Intelligent Technology Co ltd
Current assignee: Shanghai Xiangong Intelligent Technology Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-12-03
Anticipated expiration: 2031-06-23

Abstract

The utility model provides an automatic fork truck's safety stop device, it includes: the collision device comprises a bottom plate, a front collision unit which can rotate left and right and is arranged above the bottom plate, and a collision head which can stretch back and forth and is arranged at the front end of the front collision unit. When the collision head is collided with the front, the safety stop device is in an inward contraction state and sends out a first parking signal; when the collision head is collided by the side face, the safety stopping device is in a rotating state and sends out a second parking signal; when the collision head is collided by the front side and the side simultaneously, the safety stop device is in a rotating and inward-contracting state and sends out a third parking signal. The utility model discloses a safety stop device can improve automatic fork truck's security and operating efficiency, and the condition of effectively having avoided automatic fork truck mistake wounded people or other objects takes place.

Description

Safety stop device for automatic forklift

Technical Field

The utility model relates to a fork truck protects technical field, especially relates to an automatic fork truck's safety stop device.

Background

The forklift is various wheel type carrying vehicles for carrying out loading, unloading, stacking, short-distance transportation and heavy object carrying operation on goods, belongs to material carrying machinery, is widely applied to various national economic departments such as stations, ports, airports, factories, warehouses and the like, and is efficient equipment for mechanized loading, unloading, stacking and short-distance transportation. Forklifts are widely used in ports, stations, airports, goods, factory workshops, warehouses, etc. as transportation tools in modern industries. However, since the forklift sometimes collides with an obstacle or a pedestrian when transferring goods, a safety stop device for an automatic forklift is required to improve safety of the automatic forklift.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an automatic fork truck's safety stop device, this safety stop device can give the collision signal through mechanical linkage structure, and then can prevent fork truck because of maloperation or other unexpected condition striking people or other objects at the in-process of traveling, has improved automatic fork truck's security.

The utility model provides an automatic fork truck's safety stop device, this safety stop device includes: the collision device comprises a bottom plate, a front collision unit which can rotate left and right and is arranged above the bottom plate, and a collision head which can stretch back and forth and is arranged at the front end of the front collision unit. When the collision head is collided with the front, the safety stop device is in an inward contraction state and sends out a first collision signal. When the collision head is impacted by the side face collision, the safety stop device is in a rotating state and sends out a second collision signal. When the collision head is collided by the front face and the side face simultaneously, the safety stopping device is in a rotating and inward-contracting state and sends out a third collision signal.

Further, the safety stop device includes a rail structure provided longitudinally and for guiding the collision head to telescope forward and backward.

Furthermore, the guide rail structures are two groups and comprise guide rails and sliding blocks matched with the guide rails; the guide rails are arranged on two sides of the frontal collision unit in a bilateral symmetry mode, one end of the sliding block is fixedly connected with the collision head, and the other end of the sliding block is connected with the guide rails in a sliding mode.

Further, the safety stop device comprises a spring parallel to the rail structure and for resetting the crash head.

Further, the safety stop comprises a spring shaft. The front collision unit is provided with a first support for movably sleeving the spring shaft, the collision head is provided with a second support for fixedly connecting the spring shaft, and the spring is sleeved on the spring shaft and telescopically arranged between the first support and the second support.

Further, the safety stop device includes a first sensor for detecting a frontal collision. The first sensor is arranged parallel to the spring shaft towards the interior of the head-on collision cell; the bottom and the first support fixed connection of first sensor, the middle part of first sensor is fixed on the head-on collision unit through the sensor base.

Further, the safety stopping device includes a telescopic plate for ranging the first sensor. The expansion plate comprises a front plate and a side plate, the front plate is arranged opposite to the head of the first sensor, and the side plate is fixed on the guide rail structure.

Further, the safety stop device includes a second sensor for detecting a side collision. The second sensors are two and are arranged at the rear end of the frontal collision unit in a manner of being perpendicular to the guide rail structure and in bilateral symmetry.

Further, the safety stop device includes a pair of tension springs provided in parallel with the second sensor and used to reset the head-on collision unit.

Further, the safety stopper includes a connecting shaft for connecting the floor panel and the head-on collision unit together. The bottom plate and the frontal collision unit are both provided with mounting holes which can be matched with the connecting shaft.

The utility model has the advantages that: the problem of the unsafe of automatic fork truck fork mistake wounded people or other objects is solved, fork truck's security and fork truck's operating efficiency have been improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a plan view of the safety stop device of the present invention in an unactuated state;

FIG. 2 is a side view of the safety stop device of the present invention in an unactuated state;

fig. 3 is a plan view of the safety stopper in the retracted state;

fig. 4 is a side view of the safety stopper in the retracted state;

fig. 5 is a side view of the rotation state of the safety stopping device of the present invention;

fig. 6 is a plan view of the safety stopping device according to the present invention in a rotating state;

fig. 7 is a side view of the safety stopper in a rotated and retracted state;

fig. 8 is a plan view of the safety stopper in a rotated and retracted state;

fig. 9 is a schematic diagram of the explosion structure of the components of the safety stop device of the present invention.

Description of the reference numerals

A base plate; 200-frontal collision unit, 210-longitudinal sensor, 211-sensor base, 220-spring, 220' -spring shaft, 221-first support, 222-second support, 230-expansion plate, 240-guide rail structure, 250-transverse sensor, 260-tension spring; 300-collision head, 310-proximity sensor, 320-branch controller; 400-connecting shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. And the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in combination with the prior art according to specific situations. Furthermore, the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. One or more of the illustrated components may be required or unnecessary, and the relative positions of the illustrated components may be adjusted according to actual needs.

As shown in fig. 1, it is a schematic structural view of the safety stop device of the present invention. The safety stop device for an automatic forklift includes: a floor panel 100, a head-on collision cell 200 provided above the floor panel 100 to be rotatable right and left, and a collision head 300 provided at the front end of the head-on collision cell 200 to be retractable forward and backward. When the crash head 300 is subjected to a frontal crash, the safety stop is in the retracted state and a first stop signal is issued. When the crash head 300 is subjected to a side collision, the safety stop device is in a rotated state and gives a second parking signal. When the crash head 300 is simultaneously crashed by the front and the side, the safety device is in a rotating and contracting state and sends a third parking signal. When the safety stop device is used, the safety stop device can be arranged at the front end of the fork of the automatic forklift, and if the fork of the automatic forklift collides with an object, the safety stop device is triggered to give a stop signal. The master controller of the automatic forklift controls the automatic forklift to stop running after receiving the stop signal, so that safe stop is formed, and damage caused by expansion can be avoided. In addition, the safety stop device mainly adopts a mechanical linkage structure to give a collision signal, so the reliability is better.

As shown in fig. 1 and 2, the safety stop device of the present invention is in an unfired state. As can be seen from the figure, when the safety stop device is in the non-activated state, the head-on collision cell 200 is in the middle position of the floor panel 100, and the collision head 300 is extended relative to the head-on collision cell 200. The collision head 300 is connected to the head-on collision unit 200 through the spring 220 and the rail structure 240. Preferably, the rail structures 240 are two sets of bar-shaped rails that are longitudinally disposed at both sides of the head-on collision unit 200 and can guide the collision head 300 to be extended and retracted back and forth. The guide structure 240 includes a guide and a slider adapted to the guide. The guide rails are arranged on both sides of the head-on collision unit 200 in bilateral symmetry, and one end of the slider is fixedly connected with the collision head 300 while the other end is slidably connected with the guide rails.

Further, the safety stopping means includes a spring 220 parallel to the rail structure 240 and for returning the collision head 300. The safety stop includes a spring shaft 220'. The head-on collision unit 200 is provided with a first support 221 for movably receiving a spring shaft. The impact head 300 is provided with a second holder 222 for fixedly coupling the spring shaft. The spring 220 is sleeved on the spring shaft 220' and is telescopically arranged between the first support 221 and the second support 222.

As shown in fig. 3 and 4, the safety stopper of the present invention is in a retracted state. When the crash head 300 is subjected to a frontal crash, the safety stop is in the retracted state. As can be seen from the drawing, when the safety stopper is in the retracted state, the slider slides with respect to the guide rail and moves the impact head 300 toward the head-on collision unit 200. The distance between the first support 221 and the second support 222 becomes smaller so that the spring 220 is in a compressed state and the spring shaft 220' protrudes with respect to the first support 221.

In order to enable the safety device to issue the first parking signal when the safety device is involved in a frontal collision, the safety device includes a first sensor 210 for detecting a frontal collision. The first sensor 210 is disposed toward the inside of the head-on collision cell 200 in parallel with the spring shaft 220'. The bottom of the first sensor 210 is fixedly coupled to the first bracket 221, and the middle of the first sensor 210 is fixed to the head-on collision cell 200 by the sensor mount 211. When the collision head 300 is collided with the front, the first sensor 210 can convert the motion signal into an electric signal and send the electric signal to the main controller of the automatic forklift, and the main controller controls the automatic forklift to stop running.

In addition, in order to accurately measure the moving distance of the impact head 300 with respect to the head-on collision unit 200, the safety stopping apparatus further includes a telescopic plate 230 for ranging the first sensor 210. The extension plate 230 includes a front plate disposed opposite to the head of the first sensor 210 and a side plate fixed on the rail structure 240. When the safety stop is in the non-triggered state, the distance between the telescopic plate 230 and the first sensor 210 is small, and when the safety stop is in the retracted state, the distance between the telescopic plate 230 and the first sensor 210 along with the movement of the slider is large. Thus, the expansion/contraction distance of the impact head 300 can be obtained by calculating the difference between the two distances.

As shown in fig. 5 and 6, the safety stop device of the present invention is in a rotating state. In order to enable the safety device to issue a second parking signal when the safety device is subjected to a side impact, the safety device includes a second sensor 250 for detecting a side impact. The second sensors 250 are two and disposed at the rear end of the head-on collision unit 200 in bilateral symmetry perpendicular to the rail structure 240. When collision head 300 receives the side collision, second sensor 250 can be with the signal of telecommunication transmission for automatic fork truck's master controller of motion, and the master controller control automatic fork truck stops the operation. Further, the safety stopping device includes a pair of tension springs 260 disposed in parallel with the second sensor 250 and used to reset the head-on collision cell 200.

As shown in fig. 7 and 8, the safety stopper of the present invention is configured in a schematic view in a rotated and retracted state. When the collision head 300 is simultaneously subjected to a side and frontal collision, the safety device is in a rotated, retracted state. As can be seen from the figure, when the safety stopper is in the rotated and retracted state, the head-on collision cell 200 is rotated to one side with respect to the base plate 100, the two second sensors 250 are inclined, the tension spring 260 on one side is in a compressed state, and the tension spring 260 on the other side is in a stretched state. The slider slides relative to the guide rail and drives the collision head 300 to move toward the head-on collision unit 200. The distance between the first support 221 and the second support 222 becomes smaller so that the spring 220 is in a compressed state and the spring shaft 220' protrudes with respect to the first support 221. The distance between the telescopic plate 230 and the first sensor 210 becomes larger as the slider moves. The first sensor 210 and the second sensor 250 simultaneously convert the motion signals into electric signals to be sent to a master controller of the automatic forklift, and the master controller controls the automatic forklift to stop running.

Fig. 9 is a schematic diagram of the explosion structure of the components of the safety stop device according to the present invention. The safety stopping device further includes a connecting shaft 400 for connecting the bottom plate 100 and the head-on collision cell 200 together. Mounting holes capable of being fitted with the connecting shaft 400 are formed on both the bottom plate and the head-on collision unit. Further, a notch is formed at the front end of the impact head 300, and the safety stop mechanism includes a proximity sensor 310 that can be fitted into the notch and detects whether an obstacle exists in front. Therefore, when the proximity sensor 310 senses that the front obstacle exists, the proximity sensor also sends a signal to the main controller of the automatic forklift, and the main controller receives the signal and then controls the automatic forklift to stop working, so that the unsafe problem that people or other objects are mistakenly injured by the fork of the automatic forklift is solved, and the safety of the forklift and the working efficiency of the forklift are improved.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the appended claims and their full scope and equivalents, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims

1. A safety stop device for an automatic forklift, characterized by comprising: a base plate (100); a frontal collision unit (200) which is disposed above the floor panel (100) so as to be rotatable left and right; a collision head (300) which is provided at the front end of the head-on collision unit (200) so as to be retractable forward and backward; when the collision head is collided with the front face, the safety stop device is in an inward contraction state and sends out a first collision signal; when the collision head is collided by the side face, the safety stop device is in a rotating state and sends out a second collision signal; when the collision head is collided by the front face and the side face simultaneously, the safety stopping device is in a rotating and inward-contracting state and sends out a third collision signal.

2. The safety stop device according to claim 1, characterized in that it comprises a rail structure (240) disposed longitudinally and for guiding the collision head (300) to telescope back and forth.

3. Safety stop device according to claim 2, characterized in that the rail structures (240) are two sets and comprise rails and sliders adapted to the rails; the guide rails are arranged on two sides of the front collision unit (200) in a bilateral symmetry mode, one end of the sliding block is fixedly connected with the collision head (300), and the other end of the sliding block is connected with the guide rails in a sliding mode.

4. The safety stop device according to claim 2, characterized in that it comprises a spring (220) parallel to the rail structure (240) and for resetting the impact head (300).

5. The safety stop device according to claim 4, characterized in that it comprises a spring shaft (220'); the front collision unit (200) is provided with a first support (221) for movably sleeving the spring shaft, the collision head (300) is provided with a second support (222) for fixedly connecting the spring shaft, and the spring (220) is sleeved on the spring shaft (220') and is telescopically arranged between the first support (221) and the second support (222).

6. The safety stop device according to claim 5, characterized in that it comprises a first sensor (210) for detecting a frontal collision; the first sensor (210) is arranged parallel to the spring axis (220') towards the interior of the head-on collision cell (200); the bottom of the first sensor (210) is fixedly connected with a first support (221), and the middle of the first sensor (210) is fixed on the frontal collision unit (200) through a sensor base (211).

7. Safety stop device according to claim 6, characterized in that it comprises a telescopic plate (230) for ranging the first sensor (210); the expansion plate (230) comprises a front plate and a side plate, the front plate is opposite to the head of the first sensor (210), and the side plate is fixed on a guide rail structure.

8. Safety stop device according to any of claims 2 to 7, characterized in that it comprises a second sensor (250) for detecting a side impact; the second sensors (250) are two and are arranged at the rear end of the head-on collision unit (200) in a left-right symmetrical manner perpendicular to the guide rail structure (240).

9. The safety stop device according to claim 8, characterized by comprising a pair of tension springs (260) disposed in parallel to the second sensor (250) and for resetting the head-on collision cell (200).

10. The safety stop device according to claim 1, characterized by comprising a connecting shaft (400) for connecting together the floor panel (100) and the head-on collision unit (200); and mounting holes which can be matched with the connecting shaft (400) are formed in the bottom plate and the front collision unit.