Intelligent comb tooth type carrying trolley

Abstract

The utility model provides an intelligent comb tooth type carrying trolley which at least comprises a walking mechanism, a centering mechanism and a lifting mechanism, and further comprises photoelectric switches which are installed on two opposite angles of the front portion and the rear portion of a trolley body and used for vehicle detection, and a photoelectric switch which is installed in the middle of the trolley body and used for speed reduction and limiting. The centering extension limit switch and the centering retraction limit switch are mounted at the centering mechanism, and the lifting extension limit switch and the lifting retraction limit switch are mounted at the lifting mechanism; the pull rope sensor is installed on the trolley body and used for measuring the walking distance of the carrying trolley; the control unit is connected with the photoelectric switch, the limiting switch and the pull rope sensor, and meanwhile the control unit is connected with the walking motor, the centering motor and the lifting motor. According to the comb tooth type carrying trolley, accurate positioning of the carrying trolley can be achieved, then automatic operation of the carrying trolley is achieved, and meanwhile the man-machine interaction function is achieved through the touch screen connected with the PLC.

Description

Technical Field

[0001] The utility model relates to the technical field of comb-tooth type transport trolleys, in particular to an intelligent comb-tooth type transport trolley. Background Art

[0002] With the continuous improvement of social development and people's lives, the number of motor vehicles in cities is increasing. The large number of motor vehicle parking has a significant impact on urban traffic and environment. Stereoscopic parking lots can utilize space resources to park vehicles in a three-dimensional manner, making full use of urban space and thus solving the problem of parking difficulties. When a vehicle is stored in a three-dimensional parking lot, a transport trolley is usually required to move the vehicle to a designated parking space. When the driver picks up the vehicle, a transport trolley is also required to move the vehicle to the pick-up area. Therefore, a transport trolley is a key link in three-dimensional parking.

[0003] The comb-tooth transport trolley is a transport trolley that is widely used in multi-story parking lots. When storing a vehicle, the vehicle is parked in a designated area. The comb teeth of the comb-tooth transport trolley are in a retracted state and pass from the bottom of the vehicle to the front wheel positioning position, and then the comb teeth are extended. At the same time, the centering mechanism corrects the center of the vehicle, and then the vehicle is lifted by the lifting mechanism and moved to the parking position. The lifting mechanism falls, the vehicle is placed, and the vehicle retrieval procedure is the opposite. The comb-tooth transport trolley has a compact structure and high operating efficiency, but it also has high requirements for electrical control, requiring precise and reliable control, otherwise it is prone to failure, affecting vehicle parking. Summary of the invention

[0004] The utility model provides an intelligent comb-tooth type transport trolley. The comb-tooth type transport trolley performs signal detection through photoelectric switches, limit switches, proximity switches and pull-rope sensors, and is controlled by a PLC controller. The precise positioning of the transport trolley can be achieved, thereby realizing the automatic operation of the transport trolley. At the same time, a human-computer interaction function is realized through a touch screen connected to the PLC controller.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] An intelligent comb-tooth transport trolley at least comprises a trolley body and a running mechanism, a centering mechanism and a lifting mechanism installed on the trolley body, the running mechanism is provided with a running motor for driving the running mechanism, the centering mechanism is provided with a centering motor for driving the centering mechanism, and the lifting mechanism is provided with a lifting motor for driving the lifting mechanism. The intelligent comb-tooth transport trolley also comprises:

[0007] Photoelectric switches for vehicle detection installed at two diagonal positions in front and behind the vehicle body, and a photoelectric switch for deceleration limit installed in the middle of the vehicle body;

[0008] A centering extension limit switch and a centering retraction limit switch installed at the centering mechanism, and a lifting extension limit switch and a lifting retraction limit switch installed at the lifting mechanism;

[0009] A pull-rope sensor installed on the trolley body to measure the travel distance of the transport trolley;

[0010] The control unit is connected with the photoelectric switch, the limit switch and the pull rope sensor to receive the detection signal. Meanwhile, the control unit is connected with the traveling motor, the centering motor and the lifting motor to send the control command according to the detection signal to realize the automatic transportation of the intelligent comb-tooth transport trolley.

[0011] The control unit includes a PLC controller, which is provided with an I / O module for inputting and outputting signals and a communication module for sending and receiving signals; the PLC controller is connected to the sensor unit to receive the monitoring signal, and the PLC controller is connected to the traveling motor, the centering motor and the lifting motor to send control instructions.

[0012] The control unit also includes a touch screen, which is connected and communicated with the PLC controller to achieve human-computer interaction.

[0013] The PLC controller is provided with a fault alarm module, and when the running state of the transport trolley does not match the detection signal, the fault alarm module issues a fault alarm prompt.

[0014] The PLC controller is connected to the central controller.

[0015] The parking place of the transport trolley is provided with a starting position and an end position, and proximity switches are installed at the starting position and the end position.

[0016] The centering extension limit switch, centering retraction limit switch, lifting extension limit switch, and lifting retraction limit switch are all travel-type limit switches.

[0017] Plunger-type limit switches are vertically installed on both sides of the centering mechanism on the trolley body.

[0018] A control cabinet is arranged on the main body of the trolley, and the control unit is located in the control cabinet.

[0019] The traveling motor, centering motor and lifting motor are all connected to the frequency converter and driven by the frequency converter.

[0020] Compared with the prior art, the beneficial effects of the utility model are: 1. The intelligent comb-tooth type transport trolley provided by the utility model is capable of realizing accurate positioning of the transport trolley, realizing automatic transport of the transport trolley, and reducing labor input.

[0021] 2. The sensor unit in the utility model includes a photoelectric switch, a proximity switch, a limit switch and a pull-rope sensor, which can monitor the running status of the transport trolley in all directions and provide a basis for the accurate positioning of the transport trolley.

[0022] 3. The control unit in the utility model includes a PLC controller and a touch screen, and the two are connected and communicated to achieve human-computer interaction.

[0023] 4. In the utility model, a fault alarm module is provided in the PLC controller, which can warn of faults in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A top view of the bottom layout of the intelligent comb-tooth type transport trolley provided by the utility model;

[0025] Figure 2 A top view of the overall layout of the intelligent comb-tooth type transport trolley provided by the utility model;

[0026] Figure 3 A side view of the middle part of the intelligent comb-tooth type transport trolley provided by the utility model;

[0027] Figure 4 A side view of the lifting mechanism of the intelligent comb-tooth type transport trolley provided by the utility model;

[0028] Figure 5 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 1 ;

[0029] Figure 6 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 2 ;

[0030] Figure 7 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 3 , (a) in the figure is before the vehicle is lifted, and (b) is after the vehicle is lifted;

[0031] Figure 8 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 4 , (a) in the figure is before the vehicle is centered, and (b) is after the vehicle is centered;

[0032] Fig. 9 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 5 ;

[0033] Fig.10 Schematic diagram of the working process of the intelligent comb-tooth transport trolley provided by the utility model Figure 6 ;

[0034] 1-intelligent comb-tooth transport trolley, 11-photoelectric switch for vehicle detection, 12-photoelectric switch for deceleration limit, 13-centering extension limit switch, 14-centering retraction limit switch, 15-plunger limit switch, 16-lifting extension limit switch, 17-lifting retraction limit switch, 18-proximity switch, 19-pull rope sensor;

[0035] 2-starting position, 3-end point, 2-temporary storage position, 3-parking position. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0037] The intelligent comb-tooth type transport trolley provided by the utility model is as follows Figure 1-Figure 4 As shown, it at least includes a trolley body and a running mechanism, a centering mechanism and a lifting mechanism installed on the trolley body. The running mechanism is provided with a running motor for driving the running mechanism, and the centering mechanism is provided with a centering motor for driving the centering mechanism. Specifically, the centering mechanism includes two groups of left and right tensioning plates, which are driven to extend and retract by two groups of centering motors, and the lifting mechanism is provided with a lifting motor for driving the lifting mechanism. The structure of the intelligent comb-tooth transport trolley is prior art and will not be described in detail here.

[0038] In this embodiment, the traveling motor, the centering motor and the lifting motor are all connected to the frequency converter and driven by the frequency converter. The intelligent comb-tooth transport trolley also includes a photoelectric switch, a limit switch, a proximity switch, a pull rope sensor and a control unit.

[0039] Specifically, the photoelectric switch includes a photoelectric switch 11 for vehicle detection installed at two diagonal positions in front and behind the vehicle body, and a photoelectric switch 12 for deceleration and limit installed in the middle of the vehicle body. Figure 2 , to ensure the safe movement of the transport trolley. Preferably, three photoelectric switches for deceleration and limit are arranged in parallel in the middle of the trolley body along the front-to-back direction. Figure 3 , and the photoelectric switch used for deceleration and limit is a slot type photoelectric switch.

[0040] The limit switches include a centering extension limit switch 13 and a centering retraction limit switch 14 installed at the centering mechanism, and a lifting extension limit switch 16 and a lifting retraction limit switch 17 installed at the lifting mechanism. When the centering mechanism and the lifting mechanism run to the corresponding positions, the limit switches are triggered to control the on and off of the circuit, thereby sending out a detection signal. Specifically, the centering extension limit switch, the centering retraction limit switch, the lifting extension limit switch, and the lifting retraction limit switch are all travel limit switches. The specific positions of the centering extension limit switch and the centering retraction limit switch are determined according to the starting / end positions of the extension / retraction of the centering mechanism; the specific positions of the lifting extension limit switch and the lifting retraction limit switch are determined according to the starting / end positions of the extension / retraction of the lifting mechanism. In order to prevent the occurrence of a loss of control during the control of the centering mechanism, in this embodiment, plunger limit switches 15 are vertically installed on both sides of the centering mechanism on the trolley body. When a system failure occurs, the centering motor is still running. When the left and right tensioning plates of the centering mechanism hit the plunger limit switch, the circuit will be disconnected, a signal will be sent, and an early warning will be issued.

[0041] In this embodiment, a starting position 2 and an end position 3 are provided at the parking place of the transport trolley, and proximity switches 18 are installed at both the starting position and the end position.

[0042] The pull-wire sensor 19 is installed on the trolley body and is used to measure the travel distance of the transport trolley. Specifically, the fixed end of the pull-wire sensor is fixed on the trolley body, and the measuring end of the pull-wire sensor is installed on the wheel hub of the transport trolley. In this embodiment, a Miran pull-wire sensor is selected, and the measuring range is 10 meters.

[0043] In this embodiment, the control unit is connected to the photoelectric switch, limit switch, and pull rope sensor to receive detection signals. At the same time, the control unit is connected to the traveling motor, centering motor, and lifting motor to send control instructions according to the detection signals to realize automatic transportation of the intelligent comb-tooth transport trolley.

[0044] In this embodiment, the control unit is connected to the photoelectric switch, the limit switch, and the pull rope sensor to receive the detection signal. At the same time, the control unit is connected to the running motor, the centering motor and the lifting motor, and the control command is sent according to the detection signal to realize the automatic transportation of the intelligent comb-tooth transport trolley. Specifically, the control unit includes a PLC controller and a touch screen. The PLC controller is provided with an I / O module for inputting and outputting signals and a communication module for sending and receiving signals; the PLC controller is connected to the sensor unit to receive the monitoring signal. At the same time, the PLC controller is connected to the running motor, the centering motor and the lifting motor to send the control command, so as to realize the precise positioning and automatic transportation of the transport trolley. Preferably, the touch screen is a capacitive touch screen, and the touch screen is connected to the PLC controller for communication to realize human-computer interaction. In this embodiment, a fault alarm module is provided on the PLC controller. When the running state of the transport trolley does not match the detection signal, the fault alarm module sends a fault alarm prompt.

[0045] Preferably, a control cabinet is provided on the trolley body, a PLC controller of the control unit is located in the control cabinet, and the touch screen is installed on the panel of the control cabinet.

[0046] In this embodiment, the PLC controller is connected to a central controller, which is a field bus monitor, thereby connecting to the devices on the bus and monitoring their activities.

[0047] The working process of the intelligent comb-tooth transport trolley provided by the utility model is as follows: the vehicle is parked at the temporary storage position 4, the transport trolley is located at the parking place, and is provided with a starting position and an end position, such as Figure 5 As shown; the touch screen sends a parking instruction to the PLC controller, and the PLC controller controls the travel mechanism. Through the detection signals of the photoelectric switch for vehicle detection and the photoelectric switch for deceleration and limit, the transport trolley is controlled to travel from the starting position to the bottom of the car and stop at a specific position, such as Figure 6 As shown; the PLC controller controls the lifting mechanism to lift the car. After the car tires are completely lifted, the limit switch signal is triggered, and the lifting mechanism stops moving, and the vehicle lifting is completed. Figure 7 As shown; then the PLC controller controls the centering mechanism to start the action, and the left and right tensioning plates of the transport vehicle move outward respectively until they touch the limit switches on the tires on both sides, then the action stops, and the vehicle centering is completed, as shown. Figure 8 As shown; after the transport trolley completes the lifting and centering action of the vehicle, the PLC controller controls the mobile vehicle to move to the specified position and parks the vehicle in parking space 5, as shown Fig. 9 The PLC controller controls the centering mechanism and the lifting mechanism to return to their original positions in sequence, and then controls the transport trolley to move to the starting position through the detection signals of the proximity switch and the pull rope sensor, as shown in the figure. Fig.10 shown.

Claims

1. An intelligent comb-tooth transport trolley, comprising at least a trolley body and a running mechanism, a centering mechanism and a lifting mechanism installed on the trolley body, wherein the running mechanism is provided with a running motor for driving the running mechanism, the centering mechanism is provided with a centering motor for driving the centering mechanism, and the lifting mechanism is provided with a lifting motor for driving the lifting mechanism, characterized in that: The intelligent comb-tooth type transport trolley also includes: Photoelectric switches for vehicle detection installed at two diagonal positions in front and behind the vehicle body, and a photoelectric switch for deceleration limit installed in the middle of the vehicle body; A centering extension limit switch and a centering retraction limit switch installed at the centering mechanism, and a lifting extension limit switch and a lifting retraction limit switch installed at the lifting mechanism; A pull-rope sensor installed on the trolley body to measure the travel distance of the transport trolley; The control unit is connected with the photoelectric switch, the limit switch and the pull rope sensor to receive the detection signal. Meanwhile, the control unit is connected with the traveling motor, the centering motor and the lifting motor to send the control command according to the detection signal to realize the automatic transportation of the intelligent comb-tooth transport trolley.

2. The intelligent comb-tooth transport trolley according to claim 1 is characterized in that: The control unit includes a PLC controller, which is provided with an I / O module for inputting and outputting signals and a communication module for sending and receiving signals; the PLC controller is connected to the sensor unit to receive the monitoring signal, and the PLC controller is connected to the traveling motor, the centering motor and the lifting motor to send control instructions.

3. The intelligent comb-tooth transport trolley according to claim 2 is characterized in that: The control unit also includes a touch screen, which is connected and communicated with the PLC controller to achieve human-computer interaction.

4. The intelligent comb-tooth transport trolley according to claim 2 is characterized in that: The PLC controller is provided with a fault alarm module, and when the running state of the transport trolley does not match the detection signal, the fault alarm module issues a fault alarm prompt.

5. The intelligent comb-tooth transport vehicle according to claim 2 is characterized in that: The PLC controller is connected to the central controller.

6. The intelligent comb-tooth transport vehicle according to claim 1 is characterized in that: The parking place of the transport trolley is provided with a starting position and an end position, and proximity switches are installed at the starting position and the end position.

7. The intelligent comb-tooth transport vehicle according to claim 1 is characterized in that: The centering extension limit switch, centering retraction limit switch, lifting extension limit switch, and lifting retraction limit switch are all travel-type limit switches.

8. The intelligent comb-tooth transport vehicle according to claim 1 is characterized in that: Plunger-type limit switches are vertically installed on both sides of the centering mechanism on the trolley body.

9. The intelligent comb-tooth transport vehicle according to claim 1 is characterized in that: A control cabinet is arranged on the main body of the trolley, and the control unit is located in the control cabinet.

10. The intelligent comb-tooth transport vehicle according to claim 1, characterized in that: The traveling motor, centering motor and lifting motor are all connected to the frequency converter and driven by the frequency converter.

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