Anti-extrusion device for sudden stop scissor fork type ladder truck

Abstract

The utility model provides an anti-extrusion device for sudden stop of a scissors fork type ladder truck, which belongs to the technical field of scissors fork type ladder trucks and comprises a mounting box, the mounting box is composed of a base and a box cover, lug plates are arranged on two sides of the base, the box cover is arranged at the top of the base through bolts, and an induction type circuit board is arranged in the mounting box. The induction type circuit board comprises a PCB, the PCB is detachably arranged in the base from the top of the base, and the PCB is connected with a power switch, a power interface terminal, a control chip, a dial switch, an intermediate frequency transformer, a probe interface, a relay interface terminal and a relay. The inductive circuit board is arranged between a lifting control unit and a power supply of the scissor type ladder truck, a plurality of ultrasonic probes are detachably connected to the probe interface, and the problems that in the prior art, a timely detection and response mechanism is lacked, extrusion deformation is prone to occurring during construction operation, and safety accidents are caused are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to scissor type aerial platform truck technical field, specifically, relate to a kind of for the anti-extrusion device of scissor type aerial platform truck of emergency stop. BACKGROUND

[0002] Scissor type aerial platform truck is a kind of special equipment for high-altitude operation widely used in construction, logistics, electrical and other industries, with efficient, safe, flexible, reliable and other advantages, it can realize large amplitude lifting in short time, quickly moves to different positions, greatly shortens the working time, and provides solid and stable structure, so that operator can control lifting and movement in safe place, avoid the danger brought by high-altitude operation.

[0003] At present, many scissor type aerial platform trucks do not set effective protection measures on lifting path, when scissor type aerial platform truck encounters obstacles in lifting process, due to lack of timely detection and response mechanism, vehicle is prone to extrusion deformation, thereby seriously threatening the life safety of operator, especially in some complex working environment, operator can cause collision between scissor type aerial platform truck and obstacle due to misoperation or inaccurate environment judgment, and then cause extrusion accident. In order to solve this problem, it is particularly important to develop an anti-extrusion device for scissor type aerial platform truck of emergency stop. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides an anti-extrusion device for scissor type aerial platform truck of emergency stop, to solve the above problems.

[0005] The utility model is realized as follows:

[0006] An anti-extrusion device for scissor type aerial platform truck of emergency stop, including installation box, the installation box is composed of base and box cover, the both sides of base are provided with lug plate, the box cover is set on the top of base by bolt, the inside of installation box is provided with inductive circuit board, the inductive circuit board includes PCB board, the PCB board is detachably arranged in the inside of base from the top of base, the PCB board is respectively connected with power switch, power interface terminal, control chip, dial switch, middle week transformer, probe interface, relay interface terminal and relay, the inductive circuit board is arranged between lifting control unit of scissor type aerial platform truck and its power supply, a plurality of ultrasonic probes are detachably connected at probe interface.

[0007] In the embodiment of the utility model, the power interface terminal is electrically connected between the lifting control unit of the scissor-type aerial vehicle and the relay, and the power switch is electrically connected between the power interface terminal and the relay, the signal output end of the control chip is in communication connection with the signal input end of the relay and the intermediate-week transformer respectively, the probe interface is electrically connected with the intermediate-week transformer and the ultrasonic probe respectively, the signal input end of the control chip is in communication connection with the signal output end of the dial switch and the ultrasonic probe respectively, and the relay interface terminal is electrically connected with the relay and the lifting control unit of the scissor-type aerial vehicle respectively.

[0008] In the embodiment of the utility model, the dial switch is a double-gear switch, the gear of the dial switch is adjusted to change the power of the intermediate-week transformer, thereby changing the detection distance of the ultrasonic probe, and the detection alarm distance range includes 40 cm, 50 cm, 60 cm or 70 cm.

[0009] In the embodiment of the utility model, the probe interface is a four-port structure and is arranged on the front side of the PCB board, and the corresponding ultrasonic probe has four, which are electrically connected with the ports of the probe interface respectively.

[0010] In the embodiment of the utility model, the top front side of the base is provided with a lower movable groove, the top front side of the box cover is provided with an upper movable groove opposite to the lower movable groove, and after the base and the box cover are assembled, the front side of the probe interface on the inductive circuit board is clamped between the upper movable groove and the lower movable groove.

[0011] In the embodiment of the utility model, the relay interface terminal is a three-hole terminal, which is normally closed, open and normally open respectively.

[0012] In the embodiment of the utility model, the top left and right sides of the box cover are respectively provided with a first side groove and a second side groove, the power switch and the power interface terminal are respectively arranged on the top left side of the PCB board, the relay interface terminal and the relay are respectively arranged on the top right side of the PCB board, the box cover is installed on the base, the power switch and the power interface terminal are located in the first side groove, and the relay interface terminal and the relay are located in the second side groove.

[0013] The utility model discloses a beneficial effect is: through inductive circuit board is between the lift control unit of scissor type aerial platform truck and power supply and adds a on-off switch, and a plurality of ultrasonic probes are arranged around the top of the working platform of scissor type aerial platform truck simultaneously, in order to monitor the obstacle on the lift path, when monitoring the obstacle, the relay in inductive circuit board disconnects the lift control unit of scissor type aerial platform truck and makes it emergency stop, avoids the construction accident of collision extrusion, and the installation box design is ingenious, and the side groove of the two sides of box cover and the front side movable slot facilitate the quick dismounting of the device and the related circuit on scissor type aerial platform truck and the quick dismounting of ultrasonic probe, improve the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0015] Figure 1 The structure diagram of the installation box provided for the embodiment of the utility model is shown in the figure.

[0016] Figure 2 The structure diagram of the base provided for the embodiment of the utility model is shown in the figure.

[0017] Figure 3 The structure diagram of the box cover provided for the embodiment of the utility model is shown in the figure.

[0018] Figure 4 The top view of the inductive circuit board provided for the embodiment of the utility model is shown in the figure.

[0019] Figure 5 The communication block diagram provided for the embodiment of the utility model is shown in the figure.

[0020] In the figure: 10, installation box;11, base;1101, ear plate;1102, lower movable slot;12, box cover;1201, first side groove;1202, second side groove;1203, upper movable slot;20, inductive circuit board;21, PCB board;22, power switch;23, power interface terminal;24, relay interface terminal;25, relay;26, control chip;27, dial switch;28, mid-week transformer;29, probe interface;30, ultrasonic probe. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] like Figures 1-5 As shown, this utility model provides an anti-pinch device for an emergency stop scissor lift vehicle, including a mounting box 10. The mounting box 10 consists of a base 11 and a cover 12. Ear plates 1101 are provided on both sides of the base 11. The cover 12 is bolted to the top of the base 11. An inductive circuit board 20 is installed inside the mounting box 10. The inductive circuit board 20 includes a PCB board 21, which is detachably mounted inside the base 11 from the top. The PCB board 21 is connected to a power switch 22, a power interface terminal 23, a control chip 26, a DIP switch 27, an intermediate frequency transformer 28, a probe interface 29, and a relay interface. Terminal 24 and relay 25, and inductive circuit board 20 are installed between the lifting control unit of the scissor lift and its power supply. Several ultrasonic probes 30 are detachably connected to the probe interface 29. This device is equivalent to setting an on / off switch between the lifting control unit of the scissor lift and its power supply. Specifically, several ultrasonic probes 30 are installed around the working platform of the scissor lift. Based on the preset detection accuracy of the ultrasonic probes 30, obstacles on the working path of the working platform are monitored. When an obstacle is detected, the connection between the lifting control unit of the scissor lift and its power supply is disconnected, causing it to stop moving and preventing collisions that could cause construction accidents.

[0024] like Figure 5As shown, power interface terminal 23 is electrically connected between the lifting control unit of the scissor lift vehicle and relay 25, and power switch 22 is electrically connected between power interface terminal 23 and relay 25. The signal output terminal of control chip 26 is communicatively connected to the signal input terminal of relay 25 and intermediate frequency transformer 28, respectively. Probe interface 29 is electrically connected to intermediate frequency transformer 28 and ultrasonic probe 30, respectively. The signal input terminal of control chip 26 is communicatively connected to the signal output terminal of ultrasonic probe 30 of DIP switch 27, respectively. Relay interface terminal 24 is electrically connected to relay 25 and lifting control unit of scissor lift vehicle, respectively.

[0025] In this embodiment, the DIP switch 27 is a dual-position switch (including switch 1 and switch 2). Adjusting the position of the DIP switch 27 changes the power of the intermediate frequency transformer 28, thereby changing the detection distance of the ultrasonic probe 30. It should be noted that the number of intermediate frequency transformers 28 is the same as the number of ultrasonic probes 30, and their control relationship is one-to-one. When the position of the DIP switch 27 changes, the control chip 26 receives an electrical signal and controls several intermediate frequency transformers 28 to perform frequency conversion, thereby adjusting the output power of the ultrasonic probe 30 to change the detection distance. The detection alarm distance range includes 40cm, 50cm, 60cm, or 70cm. The specific detection range corresponding to the adjustment of the position is shown in the table below:

[0026] Alarm distance 40 cm 50 cm 60 cm 70 cm Switch 1 ON OFF ON OFF Switch 2 ON ON OFF OFF

[0027] In this embodiment, the probe interface 29 has a four-port structure and is located on the front side of the PCB board 21. There are four corresponding ultrasonic probes 30, which are electrically connected to the ports of the probe interface 29. These ultrasonic probes 30 are located around the top of the working platform of the scissor lift vehicle.

[0028] Furthermore, the relay interface terminal 24 is a three-hole terminal, such as... Figure 4 As shown, from back to front, they are normally open, open, and normally closed, and their corresponding wiring diagrams are as follows:

[0029]

[0030] When in use, simply press the silkscreen to connect normally closed and common to enable the scissor lift to stop suddenly when the detection distance is less than the safe distance.

[0031] Specifically, this solution uses four ultrasonic probes 30 to emit ultrasonic waves to detect the distance from four points to the obstacle. When the detection distance of any probe is less than the safe distance (set according to user requirements, currently 40cm), an electrical signal is sent to the control chip 26. The control chip 26 controls the relay 25 to switch states, disconnecting the normally closed and common terminals of the relay interface terminal 24, ultimately stopping the scissor lift vehicle in an emergency to prevent it from being crushed.

[0032] As Figures 1-3 The top front side of the base 11 is provided with a lower movable slot 1102, and the top front side of the box cover 12 is provided with an upper movable slot 1203 opposite to the lower movable slot 1102, and the front side of the probe interface 29 on the inductive circuit board 20 is clamped between the upper movable slot 1203 and the lower movable slot 1102 after the base 11 and the box cover 12 are assembled, so as to facilitate the quick plug-in of the ultrasonic probe 30.

[0033] In the embodiment, the top left and right sides of the box cover 12 are respectively provided with a first side slot 1201 and a second side slot 1202, the power switch 22 and the power interface terminal 23 are respectively arranged on the top left side of the PCB board 21, the relay interface terminal 24 and the relay 25 are respectively arranged on the top right side of the PCB board 21, the box cover 12 is installed on the base 11, the power switch 22 and the power interface terminal 23 are located in the first side slot 1201, and the relay interface terminal 24 and the relay 25 are located in the second side slot 1202, so that the two side slots facilitate the quick installation of the anti-extrusion device between the lifting control circuit and the power supply of the shear fork climbing vehicle, the anti-extrusion device does not need to be removed, and the efficiency is higher.

[0034] The above has further described the utility model by means of specific embodiments, but it should be understood that, here specific description, should not be understood as the limitation of the essence and scope of the utility model, and various modifications made to the above embodiment by the ordinary skill in the art after reading the specification all belong to the range protected by the utility model.

Claims

1. A crush prevention device for an emergency stop scissor lift, characterized by, The utility model provides an installation box (10) is by base (11) and box cover (12) constitute, the both sides of base (11) are provided with lug (1101), the box cover (12) is set up on the top of base (11) through bolt, installation box (10) inside is provided with inductive circuit board (20), inductive circuit board (20) includes PCB board (21), PCB board (21) is detachably arranged in the inside of base (11) from the top of base (11), PCB board (21) is connected with power switch (22), power interface terminal (23), control chip (26), dial switch (27), middle week transformer (28), probe interface (29), relay interface terminal (24) and relay (25) respectively, inductive circuit board (20) is arranged between the lift control unit of scissor type aerial vehicle and its power supply, detachably connected with a plurality of ultrasonic probes (30) at probe interface (29).

2. The anti-crush device for an emergency stop scissor lift vehicle of claim 1, wherein, The power interface terminal (23) is electrically connected between the lift control unit of the scissor type aerial vehicle and the relay (25), and the power switch (22) is electrically connected between the power interface terminal (23) and the relay (25). The signal output end of the control chip (26) is communicatively connected with the signal input end of the relay (25) and the middle week transformer (28). The probe interface (29) is electrically connected with the middle week transformer (28) and the ultrasonic probe (30). The signal input end of the control chip (26) is communicatively connected with the signal output end of the dial switch (27) and the ultrasonic probe (30). The relay interface terminal (24) is electrically connected with the relay (25) and the lift control unit of the scissor type aerial vehicle.

3. The anti-crush device for an emergency stop scissor lift vehicle of claim 2, wherein, The dial switch (27) is a two-gear switch. Adjusting the gear of the dial switch (27) changes the power of the middle week transformer (28), thereby changing the detection distance of the ultrasonic probe (30). The detection alarm distance range includes 40 cm, 50 cm, 60 cm, or 70 cm.

4. The anti-crush device for an emergency stop scissor lift vehicle of claim 3, wherein, The probe interface (29) is a four-port structure and is arranged on the front side of the PCB board (21). Correspondingly, the ultrasonic probe (30) has four ports and is electrically connected with the ports of the probe interface (29).

5. A crush prevention device for an emergency stop scissor lift vehicle as claimed in claim 4, wherein, The top front side of the base (11) is provided with a lower movable groove (1102), and the top front side of the box cover (12) is provided with an upper movable groove (1203) opposite to the lower movable groove (1102). After the base (11) and the box cover (12) are assembled, the front side of the probe interface (29) on the inductive circuit board (20) is clamped between the upper movable groove (1203) and the lower movable groove (1102).

6. The anti-crush device for an emergency stop scissor lift vehicle of claim 2, wherein, The relay interface terminal (24) is a three-hole terminal, which is normally closed, open, and normally open.

7. The anti-crush device for an emergency stop scissor lift vehicle of claim 2, wherein, The top of the box cover (12) is provided with a first side groove (1201) and a second side groove (1202) on the left and right sides respectively, the power switch (22) and the power interface terminal (23) are arranged on the top left side of the PCB board (21) respectively, the relay interface terminal (24) and the relay (25) are arranged on the top right side of the PCB board (21) respectively, the box cover (12) is installed on the base (11), the power switch (22) and the power interface terminal (23) are located in the first side groove (1201), and the relay interface terminal (24) and the relay (25) are located in the second side groove (1202).

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