CN220641810U

CN220641810U - Truck limiter

Info

Publication number: CN220641810U
Application number: CN202321884553.9U
Authority: CN
Inventors: 易应新; 侯东升; 蒙锋永
Original assignee: Dongguan Dacheng Machinery Make Co ltd
Current assignee: Dongguan Dacheng Machinery Make Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-03-22
Anticipated expiration: 2033-07-17

Abstract

The utility model belongs to the technical field of truck limiters, and particularly relates to a truck limiter, which comprises a power input circuit, a controller, a limiter body and a prompt component, wherein the power input circuit is connected with the controller; the controller and the limiter body are connected with the power input circuit; the limiter body and the prompt component are connected with the controller; the limiter body is provided with an elastic sheet which is connected with the controller. The power input circuit provides working power for the controller, the limiter body and the prompting component, when the truck backs a car and is successfully connected with the limiter body, the controller detects the state of the spring after the spring is extruded by the tail of the truck, and prompts a truck driver to be successfully connected with the limiter through the prompting component, if the limiter body is not successfully connected with the tail of the truck or rapidly drops off after being connected, the controller can control the prompting component to send another signal when the compression state of the spring is not detected, so that the truck driver is reminded of not being successfully connected, and the truck driver is backed a car again and is connected again.

Description

Truck limiter

Technical Field

The utility model belongs to the technical field of truck limiters, and particularly relates to a truck limiter.

Background

As described in chinese patent No. ZLCN202023324468.6, the subject is an adjustable dock wagon limiter for logistics, which is an electromechanical, self-adaptive fixing device, and the wagon or semi-trailer is fixed on the loading and unloading platform by using a rear bumper rail. By hooking the tail bumper with an electric steel hook, a perfect fit of the vehicle and loading dock is achieved to prevent the truck or trailer from moving forward. Without the locking device, the truck and dock may disengage. When a forklift moves from a loading platform to a trailer, accidents can be caused; if the driver happens to be moving the vehicle on a truck/trailer, this can be a great nuisance.

However, in actual production, the truck driver often connects the truck tail with the restraint by reversing the truck. The truck driver cannot immediately know whether the limiter is successfully connected with the truck tail, but rather needs to get off the truck for inspection or other personnel notification. Therefore, the conventional connecting process of the truck and the stopper is complicated, and further simplification is required.

Disclosure of Invention

The utility model aims to provide a truck limiter, and aims to solve the technical problems that the connecting process of the existing truck and the limiter is complex and needs to be further simplified in the prior art.

In order to achieve the above purpose, the embodiment of the utility model provides a truck limiter, which comprises a power input circuit, a controller, a limiter body and a prompt component; the controller and the limiter body are connected with the power input circuit; the limiter body and the prompt component are connected with the controller; the limiter body is provided with an elastic sheet, and the elastic sheet is connected with the controller.

Optionally, the limiter body comprises an oil pumping assembly, an oil cylinder and a drag hook; the oil pumping assembly and the oil cylinder are connected with the controller; the oil cylinder is communicated with the oil pumping assembly; the oil pumping assembly is used for pumping hydraulic oil and conveying the hydraulic oil to the oil cylinder; the drag hook is connected with an output shaft of the oil cylinder; the elastic sheet is arranged on the drag hook.

Optionally, the oil pumping assembly comprises an oil pump and a motor which are connected with each other, and the oil pump and the motor are connected with the controller; the oil pump is also connected with the oil cylinder.

Optionally, the oil pump is connected with the oil cylinder through a hose; the hose is provided with a one-way valve.

Optionally, the power input circuit further comprises a voltage regulating circuit; the voltage regulating circuit is connected with the controller.

Optionally, the power input circuit is further connected with the motor to provide power for the motor to work.

Optionally, the prompting component is a signal lamp or a buzzer.

Optionally, the oil cylinder is provided with an oil cylinder pressure sensor; the oil cylinder pressure sensor is arranged in the oil cylinder and is connected with the controller.

Optionally, the device further comprises an unloading overflow valve; the unloading overflow valve is connected with the controller; the unloading overflow valve is also connected with the oil cylinder.

Optionally, the power input circuit is provided with a phase sequence protector.

The one or more technical solutions in the truck limiter provided by the embodiments of the present utility model have at least one of the following technical effects: the power input circuit provides a working power supply for the controller, the limiter body and the prompt component, when the truck backs a car and is successfully connected with the limiter body, after the elastic sheet is extruded by the tail of the truck, the controller detects the state of the elastic sheet and prompts a truck driver to be successfully connected with the limiter through the prompt component, if the limiter body is not successfully connected with the tail of the truck or rapidly drops off after being connected, the controller cannot detect the compression state of the elastic sheet, and then controls the prompt component to send another signal, so that the truck driver is reminded of not being successfully connected, and then the truck is backed a car again and is connected again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a truck stop provided in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a control circuit for a truck stop provided in an embodiment of the present utility model;

FIG. 3 is a schematic illustration of the connection of a pumping unit to a cylinder provided by the present utility model.

Wherein, each reference sign in the figure:

100. a power input circuit; 110. a voltage regulating circuit; 200. a controller; 300. a limiter body; 310. an oil pumping assembly; 311. an oil pump; 312. a motor; 313. a one-way valve; 320. an oil cylinder; 330. a drag hook; 340. a bracket; 341. a slide rail; 342. a slide block; 343. a roller; 400. a prompting component; 500. a spring plate; 600. and an unloading overflow valve.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In some embodiments of the present utility model, as shown in FIGS. 1-3, a truck restraint is provided that includes a power input circuit 100, a controller 200, a restraint body 300, and a prompt assembly 400. The controller 200 and the limiter body 300 are both connected to the power input circuit 100. Both the stop body 300 and the cue assembly 400 are connected to the controller 200. The limiter body 300 is provided with a spring plate 500, and the spring plate 500 is connected with the controller 200.

The power input circuit 100 provides a working power for the controller 200, the limiter body 300 and the prompt component 400, when the truck backs up and is successfully connected with the limiter body 300, after the elastic sheet 500 is extruded by the tail of the truck and is kept for a certain time, the controller 200 detects the state of the elastic sheet 500, prompts the truck driver to successfully connect with the limiter through the prompt component 400, if the limiter body 300 is not successfully connected with the tail of the truck or rapidly drops after being connected, the controller 200 cannot detect the compression state of the elastic sheet 500 in a certain time, and then controls the prompt component 400 to send another signal, thereby reminding the truck driver of unsuccessful connection, and then backing up again and connecting again.

In other embodiments of the present utility model, the controller 200 is preferably a PLC. It should be noted that, the PLC is a common digital operation electronic system in an industrial environment, and those skilled in the art should grasp the connection of the PLC and the programming of the PLC, and the connection of the PLC and the programming of the PLC are not the focus of the present application, so the present application does not detail how the PLC is connected and how the PLC is programmed.

Specifically, a limit switch B2 is disposed between the spring 500 and the controller 200. When the limiter body 300 is connected to the tail of the truck, the elastic sheet 500 is pressed and drives the limit switch B2, so as to change the opening and closing state of the limit switch B2, the controller 200 determines that the tail of the truck has been successfully connected to the limiter body 300 according to the change of the opening and closing state of the limit switch B2, and the controller 200 controls the prompt assembly 400 to send a prompt signal representing successful connection or connection failure.

In other embodiments, a dome pressure sensor is disposed on the dome 500, the dome pressure sensor measures a pressure value received by the dome 500 and transmits the pressure value to the controller 200, the controller 200 determines whether the truck tail is successfully connected with the limiter according to the pressure change value, and the controller 200 controls the prompt component 400 to send a prompt signal representing successful connection or connection failure.

In other embodiments of the present utility model, as shown in FIGS. 1-3, the stop body 300 includes a pumping unit 310, a cylinder 320, and a drag hook 330. The pumping unit 310 and the oil cylinder 320 are both connected to the controller 200. The oil cylinder 320 communicates with the oil pumping assembly 310. The pumping unit 310 is used to pump hydraulic oil and deliver the hydraulic oil to the cylinder 320. The drag hook 330 is connected with the output shaft of the oil cylinder 320. The elastic sheet 500 is mounted on the drag hook 330, preferably at a position where the drag hook 330 is in direct contact with the tail of the truck.

In other embodiments of the present utility model, as shown in fig. 1, the stopper body 300 further includes a bracket 340, and a longitudinal sliding rail 341 and a sliding block 342 are disposed on the bracket 340. The slide 342 is provided with a roller 343, so that the slide 342 can slide in the slide 341 by means of the roller 343. The drag hook 330 is fixedly connected with the slider 342, and an output shaft of the oil cylinder 320 is connected with the slider 342. The output shaft of the oil cylinder 320 may be pushed out or retracted to drive the slider 342 to move longitudinally in the sliding rail 341, so as to drive the draw hook 330 to move up and down, so as to adapt to different truck body heights.

Further, the pumping unit 310 includes an oil pump 311 and a motor 312 connected to each other, the oil pump 311 and the motor 312 are connected to the controller 200, and the oil pump 311 is also connected to the oil cylinder 320. The oil pump 311 is connected to an external hydraulic oil reservoir. The motor 312 rotates, so that the oil pump 311 extracts hydraulic oil into the oil cylinder 320. In other embodiments of the present utility model, as shown in fig. 2, the fourth pin Y4 of the controller 200 is connected to the pumping unit 310 through the first contactor KM1, and the fifth pin Y5 of the controller 200 is connected to the stopper body 300 through the second contactor YA 1. When the first contactor KM1 and the second contactor YA1 are simultaneously turned on, the pumping unit 310 pumps hydraulic oil and delivers the hydraulic oil to the oil cylinder 320, and the oil cylinder 320 hydraulically pushes the drag hook 330 to move upward.

In other embodiments of the present utility model, as shown in fig. 1, the oil pump 311 and the oil cylinder 320 are connected by a hose. The hose is provided with a one-way valve 313. The check valve 313 prevents the hydraulic oil from flowing back.

In other embodiments of the present utility model, as shown in fig. 2, the power input circuit 100 further includes a voltage regulating circuit 110. The voltage regulating circuit 110 is connected to the controller 200. The voltage regulating circuit 110 regulates the input voltage of the power input circuit 100 so that the input voltage is adapted to the operating voltage of the controller 200.

In other embodiments of the present utility model, as shown in fig. 2, the power input circuit 100 is also connected to the motor 312 to provide power for the operation of the motor 312.

In other embodiments of the present utility model, as shown in fig. 2, the prompting component 400 is a signal light or a buzzer. Specifically, when the signal lamps are adopted, signals of connection success and connection failure can be respectively sent out by adopting a plurality of groups of signal lamps, and signals of connection success and connection failure can be prompted by controlling the flashing frequency of the signal lamps. The signal lamp can be connected with Y0, Y1, Y2 and Y3 pins of the PLC. When the buzzer is adopted, the signal for prompting the connection success and the connection failure can be achieved by setting the sounding intervals of the buzzers with different intervals.

Specifically, the prompt component can be installed in the cab, so that a truck driver can know the connection condition of the limiter and the truck body at the first time conveniently.

In other embodiments of the present utility model, the cylinder 320 further includes a cylinder pressure sensor. The cylinder pressure sensor is connected with the controller 200. The cylinder pressure sensor may detect a pressure change in the cylinder 320 and transmit a pressure change value in the cylinder 320 to the controller 200. The controller 200 controls the pumping unit 310 to supplement hydraulic oil according to the pressure variation value in the oil cylinder 320, thereby maintaining the pressure in the oil cylinder constant even if the oil cylinder 320 maintains pressure. On the premise of maintaining the pressure of the oil cylinder 320, when the goods are unloaded from the truck, the oil cylinder with the pressure maintained is lifted along with the body of the truck, so that the draw hook 330 is prevented from unhooking with the body.

The cylinder pressure sensor and the spring plate pressure sensor are all commonly used pressure sensors.

In other embodiments of the present utility model, as shown in FIG. 3, the wagon balance further includes an unloading relief valve 600. The unloading relief valve 600 is connected to the controller 200, and the unloading relief valve 600 is also connected to the cylinder 320. When the truck is loaded with cargo, the body of the truck is lowered, thereby increasing the pressure of the cylinder 320. When the pressure of the oil cylinder 320 increases to the set value of the unloading relief valve 600, the unloading relief valve 600 automatically opens the unloading relief valve, hydraulic oil in the oil cylinder 320 flows out, and the pressure in the oil cylinder 320 decreases, thereby preventing the oil cylinder 320 from being damaged due to excessive pressure.

In other embodiments of the present utility model, as shown in fig. 2, the power input circuit 100 is provided with a phase sequence protector K1. The phase sequence protector is also called a phase sequence relay, is a kind of control relay, and can automatically identify the phase sequence, so that the motor 312 is prevented from reversing after the phase sequence of the power supply is reversed (three live wires are sequentially reversed), and accidents or equipment damage are avoided.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The truck limiter is characterized by comprising a power input circuit, a controller, a limiter body and a prompt component; the controller and the limiter body are connected with the power input circuit; the limiter body and the prompt component are connected with the controller; the limiter body is provided with an elastic sheet, and the elastic sheet is connected with the controller.

2. The truck restraint of claim 1 wherein the restraint body includes a pumping assembly, a cylinder, and a drag hook; the oil pumping assembly and the oil cylinder are connected with the controller; the oil cylinder is communicated with the oil pumping assembly; the oil pumping assembly is used for pumping hydraulic oil and conveying the hydraulic oil to the oil cylinder; the drag hook is connected with an output shaft of the oil cylinder; the elastic sheet is arranged on the drag hook.

3. The truck restraint of claim 2 wherein the oil pumping assembly includes an oil pump and a motor interconnected, both of which are connected to the controller; the oil pump is also connected with the oil cylinder.

4. A wagon limiter according to claim 3, wherein the oil pump and the oil cylinder are connected by a hose; the hose is provided with a one-way valve.

5. The truck restraint of claim 4 wherein the power input circuit further includes a voltage regulation circuit; the voltage regulating circuit is connected with the controller.

6. The truck restraint of claim 5 wherein the power input circuit is further coupled to the motor to provide power for operation of the motor.

7. The truck restraint of claim 6 wherein the cue assembly is a signal light or a buzzer.

8. The truck restraint of claim 7 wherein the ram is provided with a ram pressure sensor; the oil cylinder pressure sensor is arranged in the oil cylinder and is connected with the controller.

9. The truck stop of claim 8 further comprising an unloading relief valve; the unloading overflow valve is connected with the controller; the unloading overflow valve is also connected with the oil cylinder.

10. The truck restraint of claim 9 wherein the power input circuit is provided with a phase sequence protector.