A multi-point positioning device for long-distance movement of a vehicle plate and a positioning method thereof

Abstract

The present invention discloses a multi-point positioning device for a long-distance moving vehicle plate and a positioning method thereof. The positioning device comprises a vehicle body frame, a vehicle plate, a controller and a motor. At least three parking spaces are provided in the transverse direction of the vehicle body frame. Two limit switches are fixed on the rear end inner wall of the vehicle body frame corresponding to each parking space, and a limit collision rod is fixed to the rear end of the vehicle plate. The signal output ends of the limit switches are connected to the signal input ends of the controller, and the signal output end of the controller is connected to the motor through a contactor. When the limit collision rod collides with the two limit switches, the vehicle plate can be positioned. The present invention improves the positioning capability of the vehicle plate and makes the subsequent actions of the vehicle plate simple and easy to control.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional parking equipment, in particular to a long-distance moving multi-point positioning device for a vehicle plate and a positioning method thereof. Background Art

[0002] In conventional parking systems, parking decks typically move between only two positions (upper and lower, or left and right). During the entire process of removing a parking deck, each deck performs only one movement: rising or falling, or moving left or right. However, in lift-and-slide parking systems, one type of deck behaves differently: the pass-through deck in multi-row pit systems. This deck typically operates under the traversing deck, allowing vehicles parked on the rear deck to pass over the pit in the front row and reach the rear parking space. Figure 1 As shown. This type of pallet typically moves between three positions. Its movements during each vehicle retrieval are significantly more complex than those of other pallets. Sometimes the pallet needs to be moved to a specific position, such as when retrieving a vehicle from the rear row; other times, it needs to be positioned differently, such as when retrieving a vehicle from the upper or lower deck of the front row. In typical multi-row pit-type equipment, each pallet has three positions: left, center, and right. Each position has a corresponding limit switch on the frame. Contact between the limit switch and the pallet's limit stop indicates that the pallet is in the center of that position. With this positioning method, if none of the three limit switches are triggered, the control system cannot determine the pallet's current position. It could be located slightly left of center or slightly right of center. The current position of the pallet is crucial to the next movement of the pallet. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to design a long-distance moving multi-point positioning device for a vehicle plate and a positioning method thereof.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multi-point positioning device for a long-distance moving passing plate comprises a vehicle frame, a passing plate, a controller and a motor, wherein at least three parking spaces are arranged in the transverse direction of the vehicle frame, and two limit switches are fixed on the rear end inner wall of the vehicle frame corresponding to each parking space, namely a left limit switch and a right limit switch; the passing plate is movably arranged in any parking space, and a limit striker is fixed on the rear end surface of the passing plate, the limit striker is a straight rod, and the length of the limit striker is equal to the distance between the two limit switches in the same parking space and is greater than the distance between the limit switches of any two adjacent spans; the signal output ends of the left limit switch and the right limit switch are both connected to the signal input end of the controller, and the signal output end of the controller is connected to the motor through a contactor.

[0006] Preferably, the limiting striker is arranged along the width direction of the vehicle plate.

[0007] Preferably, the contactor includes a contactor KM1 for controlling the forward rotation of the motor and a contactor KM2 for controlling the reverse rotation of the motor.

[0008] Preferably, there are 9 parking spaces in the transverse direction of the vehicle frame.

[0009] Preferably, the controller adopts a PLC programmable logic controller.

[0010] A multi-point positioning method for a long-distance moving vehicle plate includes the following steps:

[0011] Step 1: Sequentially number the parking spaces in the lateral direction of the vehicle frame. Let the numbers of all left limit switches be variable x, the numbers of all right limit switches be variable y, and the number of the target parking space be variable z.

[0012] Step 2: When picking up the car, the value of the target parking space number z is set. At the same time, the controller determines the current position of the parking plate, that is, determines the parking space numbers of the left limit switch and the right limit switch currently touched by the limit striker on the parking plate, and assigns the parking space number of the left limit switch to variable x, and the parking space number of the right limit switch to variable y;

[0013] Step 3: The controller determines the size of the x value and the z value, and the size of the y value and the z value. When x<z and y<z, or x<z and y=z, the controller controls contactor KM2 to be energized, the motor to reverse, and the motor to drive the passing plate to move right; when x=z and y>z, or x>z and y>z, the controller controls contactor KM1 to be energized, the motor to rotate forward, and the motor to drive the passing plate to move left; in the process of the passing plate moving left or right, the controller detects in real time the number of the parking space where the left limit switch and the right limit switch touched by the limit rod are located, and assigns their corresponding numbers to variables x and y respectively, until the values ​​of variables x and y are equal to the value of z, the passing plate stops moving.

[0014] The positive and beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to use. By fixing two limit switches on the vehicle body frame corresponding to each parking space, a straight rod-shaped limit striker is fixed on the rear end face of the passing plate along its width direction. The length of the limit striker is equal to the distance between the two limit switches in the same parking space and is greater than the distance between the limit switches of any two adjacent spans. When the limit striker collides with the two limit switches in the same parking space at the same time, it indicates that the passing plate is in the middle of the parking space, and the passing plate can be positioned. At the same time, the passing plate will touch at least one limit switch during its movement. When the passing plate is not parked in the middle of a parking space, it can also be positioned. The present invention increases the positioning capability of the passing plate, making the subsequent actions of the passing plate simple and easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view schematic diagram of the front and rear rows of three-layer pit parking equipment.

[0016] Figure 2 This is a front view schematic diagram of the three-story pit parking system in the front and rear rows.

[0017] Figure 3 It is a top view of the present invention.

[0018] Figure 4 This is a schematic diagram of the numbering of the 9 parking spaces in the transverse direction of the vehicle frame.

[0019] Figure 5 This is the motor control circuit diagram.

[0020] Figure 6 This is a control circuit diagram of the present invention.

[0021] The specific meanings of the numbers in the figure are: 1 is the vehicle frame, 2 is the passing plate, 3 is the left limit switch, 4 is the right limit switch, 5 is the limit bumper, 6 is the parking space, 7 is the transverse plate, 8 is the upper plate, 9 is the lower plate, and 10 is the pit edge. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0023] Combine Figure 1 To describe this embodiment, the multi-point positioning device for long-distance movement of a vehicle plate of the present invention comprises a vehicle frame 1, a vehicle plate 2, a controller, and a motor. The vehicle frame is provided with at least three parking spaces in the transverse direction. In this embodiment, there are nine parking spaces in the transverse direction of the vehicle frame, meaning that the vehicle plate 2 needs to move between the nine parking spaces. Two limit switches, a left limit switch 3 and a right limit switch 4, are fixed to the rear inner wall of the vehicle frame at each parking space, with a certain distance between them. The passing plate 2 is movably arranged in any parking space 6, and a limit striker 5 is fixed on the rear end surface of the passing plate 2. The limit striker 5 is arranged along the width direction of the passing plate 2. The limit striker 5 in this embodiment is a straight rod. The length of the limit striker is equal to the distance between the two limit switches in the same parking space and is greater than the distance between the limit switches of any two adjacent spans. When the limit striker collides with the two limit switches in the same parking space, the limit striker can be positioned; when the limit striker collides with any one or two limit switches of adjacent parking spaces, the position of the limit striker can be detected. The signal output ends of the left limit switch 3 and the right limit switch 4 are both connected to the signal input ends of the controller, and the signal output end of the controller is connected to the motor through a contactor. The contactor includes a contactor KM1 for controlling the forward rotation of the motor and a contactor KM2 for controlling the reverse rotation of the motor. The controller adopts a PLC programmable logic controller; that is, when the limit striker 5 collides with a limit switch, the limit switch transmits an electrical signal to the PLC, and the PLC controls the contactor KM1 or contactor KM2 to be attracted according to its internal control logic. When the contactor KM1 is attracted, the motor rotates forward, and the motor drives the passing plate to move to the left; when the contactor KM2 is attracted, the motor reverses, and the motor drives the passing plate to move to the right.

[0024] In this embodiment, the vehicle board needs to be moved between nine parking spaces in the horizontal direction. The multi-point positioning method specifically includes the following steps:

[0025] Step 1: Sequentially number the parking spaces across the vehicle frame, from left to right: the first parking space is numbered 1, the second is numbered 2, and so on to the ninth, 9. Let the number of all left limit switches be variable x, the number of all right limit switches be variable y, and the number of the target parking space be variable z.

[0026] Step 2: When picking up the car, the value of the target parking space number z is set. At the same time, the controller determines the current position of the parking plate, that is, determines the parking space numbers of the left limit switch and the right limit switch currently touched by the limit striker on the parking plate, and assigns the parking space number of the left limit switch to variable x, and the parking space number of the right limit switch to variable y;

[0027] Step 3: The controller determines the size of the x value and the z value, and the size of the y value and the z value. When x<z and y<z, or x<z and y=z, the controller controls the contactor KM2 to be energized, the motor to reverse, and the motor to drive the passing plate to move right; when x=z and y>z, or x>z and y>z, the controller controls the contactor KM1 to be energized, the motor to rotate forward, and the motor to drive the passing plate to move left; in the process of the passing plate moving left or right, the controller detects in real time the numbers of the parking spaces where the left limit switch and the right limit switch touched by the limit bumper are located, and assigns their corresponding numbers to the variables x and y respectively, until the values ​​of the variables x and y are equal to the value of z, the passing plate stops moving.

[0028] Specifically, assuming the board is to move to the fifth parking space, the target parking space is set to 5, i.e., z = 5. The controller determines which parking space the board is currently located in, that is, which parking space's limit switch the current parking space's limit bar is in contact with. Assuming the board is currently touching the right limit switch of the third parking space and the left limit switch of the fourth parking space (i.e., the board is located between the third and fourth parking spaces), the third parking space's number 3 is assigned to the variable y, i.e., y = 3, and the fourth parking space's number 4 is assigned to the variable x, i.e., x = 4. In this case, x = 4 and y = 3.

[0029] The controller determines the magnitude of the x and z values, and the y and z values. Since x = 4, y = 3, and z = 5, x < z and y < z, the controller controls contactor KM2 to energize, reverses the motor, and drives the access plate to the right. When the access plate moves to the fourth parking space, it hits the left and right limit switches of the fourth parking space. The controller assigns the number 4 of the fourth parking space to variables x and y, respectively. For example, if x = 4 and y = 4, the controller determines that x and y are still less than z, so the controller controls contactor KM2 to energize, and the access plate continues to move to the right. When the access plate hits the right limit switch of the fourth parking space and the left limit switch of the fifth parking space, the controller assigns the number 4 of the fourth parking space to variable y and the number 5 of the fifth parking space to variable x. For example, if x = 5 and y = 4, the controller determines that although x is equal to z, y is still less than z, so the controller controls the access plate to move to the right. When the passing plate collides with the left limit switch and the right limit switch of the 5th parking space, the controller assigns the number 5 of the 5th parking space to variables x and y respectively, that is, let x=5, y=5. The controller determines that the values ​​of x and y are equal to the value of z, and then the controller controls the passing plate to stop moving.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present invention. They should all be included in the scope of the technical solutions for which protection is sought in the present invention.

Claims

1. A multi-point positioning device for long-distance movement of a vehicle plate, characterized in that: It includes a vehicle body frame, a passing plate, a controller and a motor. At least three parking spaces are arranged in the transverse direction of the vehicle body frame. Two limit switches are fixed on the rear end inner wall of the vehicle body frame corresponding to each parking space, namely a left limit switch and a right limit switch; the passing plate is movably arranged in any parking space, and a limit striker is fixed on the rear end surface of the passing plate along the width direction of the passing plate. The limit striker is a straight rod. The length of the limit striker is equal to the distance between the two limit switches in the same parking space and is greater than the distance between the limit switches of any two adjacent spans. When the limit striker collides with the two limit switches in the same parking space at the same time, it indicates that the passing plate is in the middle of this parking space. At the same time, the passing plate will touch at least one limit switch during the movement; the signal output ends of the left limit switch and the right limit switch are both connected to the signal input end of the controller, and the signal output end of the controller is connected to the motor through a contactor; the contactor includes a contactor KM1 for controlling the forward rotation of the motor and a contactor KM2 for controlling the reverse rotation of the motor.

2. The multi-point positioning device for long-distance movement of a vehicle plate according to claim 1 is characterized in that: There are 9 parking spaces in the transverse direction of the vehicle body frame.

3. The multi-point positioning device for long-distance movement of a vehicle plate according to claim 1, characterized in that: The controller adopts a PLC programmable logic controller.

4. A positioning method for a long-distance moving multi-point positioning device for a vehicle plate according to any one of claims 1 to 3, characterized in that: The specific steps include: Step 1: Sequentially number the parking spaces in the lateral direction of the vehicle frame, that is, number the N parking spaces from left to right: the first parking space is numbered 1, the second parking space is numbered 2, ..., the Nth parking space is numbered N; let the number of all left limit switches be variable x, the number of all right limit switches be variable y, and the number of the target parking space be variable z; Step 2: When picking up the car, set the value of the target parking space number z, and set the target parking space number to the number of the parking space to which the pass plate is to move; At the same time, the controller determines the current position of the vehicle plate, that is, determines the parking space numbers of the left limit switch and the right limit switch currently touched by the limit striker on the vehicle plate, and assigns the parking space number of the left limit switch to the variable x, and the parking space number of the right limit switch to the variable y; Step 3: The controller determines the size of the x value and the z value, and the size of the y value and the z value. When x<z and y<z, or y<z and x=z, the controller controls contactor KM2 to close, the motor reverses, and the motor drives the vehicle plate to move right; When y=z and x>z, or x>z and y>z, the controller controls contactor KM1 to close, the motor rotates forward, and the motor drives the vehicle plate to move left; When the passing plate moves left or right, the controller detects in real time the numbers of the parking spaces where the left and right limit switches touched by the limit rods are located, and assigns their corresponding numbers to variables x and y respectively. When the values ​​of variables x and y are equal to the value of z, the passing plate stops moving.

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