Wireless cooperative lifting method for multiple lifting columns

Abstract

The invention aims at disclosing a wireless cooperative lifting method for a plurality of lifting columns, and relates to the technical field of vehicle lifting control, and the wireless cooperative lifting method comprises n lifting columns; comprising the following steps that any one of n lifting columns is configured as a host, the host generates a random synchronous code, and n is larger than or equal to 6; the random synchronous codes are input into n-1 lifting columns respectively, the n-1 lifting columns are configured as slave machines, and the slave machines are numbered according to the pairing sequence; the host and the ith slave are arranged in a first column, i is an even number, the mth slave is arranged in a second column, and m is an odd number; the host sends a synchronous lifting signal through the first wireless module or the second wireless module; the method has the technical effects that the strongest wireless signal synchronization path is selected, the synchronization of the lifting signals among the plurality of lifting columns is ensured, the blockage of the height synchronization signal of one lifting column is avoided, and the safety is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lifting control, and in particular to a wireless coordinated lifting method for a plurality of lifting columns. Background Art

[0002] At present, the height synchronization of multiple lifting columns is synchronized through wireless signals. After being blocked by the lifted load, the height synchronization signal received by any lifting column will lag or become stuck, which will cause immeasurable hidden dangers to lifting safety.

[0003] In view of this, it is necessary to develop a wireless collaborative lifting method for multiple lifting columns to solve the above problems. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to disclose a wireless collaborative lifting method for a plurality of lifting columns.

[0005] To achieve the above-mentioned object of the invention, the present invention provides a wireless collaborative lifting method for a plurality of lifting columns, comprising n lifting columns, a first wireless module being arranged near the top of each lifting column, and a second wireless module being arranged near the bottom of each lifting column; The following steps are involved: Any one of the n lifting columns is configured as a host, wherein the host generates a random synchronization code, where n is greater than or equal to 6 and n is an even number; Inputting the random synchronization code into n-1 lifting columns respectively, the n-1 lifting columns are configured as slaves, and the slaves are numbered according to the pairing order; The master and the i-th slave are arranged in the first row, i is an even number, and the m-th slave is arranged in the second row, m is an odd number. The lifting columns in the first row and the lifting columns in the second row lift the load between them synchronously. The host sends a synchronous lifting signal through the first wireless module or the second wireless module, and the slaves in the first column receive the synchronous lifting signal; Monitor the wireless signal strength between any lifting column in the first column and any lifting column in the second column, select the lifting column in the first column with the maximum wireless signal strength to send a synchronous lifting signal to the kth slave in the second column, and the kth slave then sends a synchronous lifting signal to other slaves in the second column.

[0006] Preferably, the host and the first slave are configured as a first group, the lifting columns of the first group are selected for operation, the host and the first slave lift the load synchronously, and other slaves are not started.

[0007] Preferably, the host, the first slave, the second slave and the third slave are configured as the second group, the lifting column of the second group is selected for operation, the host, the first slave, the second slave and the third slave lift the load synchronously, and the other slaves are not started.

[0008] Preferably, the first wireless module of the lifting column of the first row and the first wireless module of the lifting column of the second row are at the same height and are paired; The second wireless module of the lifting column of the first row and the second wireless module of the lifting column of the second row are at the same height and are paired.

[0009] Preferably, the first wireless module and the second wireless module are both 2.4G wireless modules.

[0010] Preferably, the monitoring period of the wireless signal strength is 30ms-100ms.

[0011] Preferably, the first wireless module and the second wireless module are both installed perpendicular to the ground.

[0012] Preferably, n=8; The master, the second slave, the fourth slave and the sixth slave are in the first column, and the first slave, the third slave, the fifth slave and the seventh slave are in the second column; The signal strengths between any first wireless module in the first column and any first wireless module in the second column are a1, a2, a3, ..., a 16 ; The signal strengths between any second wireless module in the first column and any second wireless module in the second column are b1, b2, b3, ... b 16 ; Take max(a1, a2, a3, ...a 16 , b1, b2, b3, …b 16 ) The corresponding wireless module in the first column serves as a first relay wireless module, and the corresponding wireless module in the second column serves as a second relay wireless module; Synchronously transmitting a rising and falling signal to the second relay wireless module through the first relay wireless module; The second relay wireless module synchronously raises and lowers signals to other slaves in the second column.

[0013] Preferably, each lifting column is provided with a lifting slide, and the lifting slide drives the lifting arm to move up and down along the lifting column.

[0014] Preferably, the lifting slide is provided with a pull rope sensor, the pull rope sensor monitors the lifting height of the lifting arm, and the host synchronizes the lifting signal to several slaves.

[0015] Compared with the prior art, the technical effects of the present invention are as follows: in the process of lifting longer loads, such as containers, large trucks, rail vehicles and the like, from the bottom of several lifting columns to the highest point, due to the obstruction of the load body, especially when the load is raised to the highest point, the load is blocked between the first wireless module of the lifting column in the first row and the first wireless module of the second row, resulting in a large attenuation of the signal strength between the two; when the load is raised to the lowest point, the load is blocked between the second wireless module of the lifting column in the first row and the second wireless module of the second row, resulting in a large attenuation of the signal strength between the two; that is, in the process of the load being lifted, the strength of the wireless signal between the first row lifting column and the second row lifting column changes in real time. Through the present invention, the strongest wireless signal synchronization path is selected to ensure the synchronization of the lifting and lowering signals among several lifting columns, avoid the height synchronization signal of one of the lifting columns from being stuck, and ensure lifting safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the lifting column with M arms of the present invention.

[0018] Figure 2 It is a side structural schematic diagram of the lifting column with M arms of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the lifting column with the tire supporting arm of the present invention.

[0020] Figure 4 It is a schematic diagram of the arrangement of the first and second enumerated lifting columns of the present invention.

[0021] Figure 5 It is a flow chart of the wireless collaborative lifting method of several lifting columns of the present invention.

[0022] Among them, 1. Lifting column; 11. Host; 12. Second slave; 13. Fourth slave; 14. Sixth slave; 15. First slave; 16. Third slave; 17. Fifth slave; 18. Seventh slave; 2. First wireless module; 3. Second wireless module; 4. Lifting slide; 5. Lifting arm. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. Example 1

[0025] Ginseng Figures 1 to 5 As shown, this embodiment discloses a specific implementation of a wireless collaborative lifting method for multiple lifting columns.

[0026] Wireless collaborative lifting method for several lifting columns, Figures 1 to 5 As shown, it includes n lifting columns 1, a first wireless module 2 is set near the top of each lifting column 1, and a second wireless module 3 is set near the bottom of each lifting column 1. The distance between the first wireless module 2 and the top is preferably 0.0m-0.8m, especially preferably 0.2m-0.8m, see Figure 2 The second wireless module 3 is installed on the side wall near the bottom of the lifting column 1. The second wireless module 3 is preferably 0.3m-1.2m away from the ground, especially preferably 0.8m-1.2m. Figure 2 A wireless collaborative lifting method for a plurality of lifting columns, comprising the following steps: Step S1: any one of the n lifting columns is configured as the host 11, and the host 11 generates a random synchronization code, n≥6, and n is an even number; specifically, see Figure 4 , more than six and an even number of lifting columns are networked. During the networking process, in order to facilitate rapid networking, the lifting columns to be networked can be concentrated in a small area to facilitate wireless networking.

[0027] Step S2: The random synchronization code is input into n-1 lifting columns respectively, and the n-1 lifting columns are configured as slaves, and the slaves are numbered according to the pairing order; specifically, the random synchronization code is input into the control interface of each slave, and the slave number is determined according to the input order, or the selected host 11 sends a random synchronization code to each slave through the first wireless module 2 or the second wireless module 3, and each slave receives the random synchronization code and determines the slave number according to the networking order; after the synchronization is completed, the host 11 sends the networking list to each slave, so that each slave knows the member list of the network.

[0028] Step S3: The host and the i-th slave are arranged into the first column, i is an even number, the m-th slave is arranged into the second column, m is an odd number, and the lifting columns of the first column and the lifting columns of the second column synchronously lift the load located therebetween; specifically, the host and all the slaves are divided into two columns, the lifting columns of the first column lift one side of the load, and the lifting columns of the second column lift the other side of the load, the host and the even-numbered slaves are arranged into the first column, such as in the order of the host 11, the second slave 12, the fourth slave 13, and the sixth slave 14, and the odd-numbered slaves are arranged into the second column, such as in the order of the first slave 15, the third slave 16, the fifth slave 17, and the seventh slave 18.

[0029] Step S4: The host sends a synchronous lifting signal through the first wireless module or the second wireless module, and the slaves in the first column receive the synchronous lifting signal; specifically, when controlling the lifting load, the host sends a synchronous lifting signal through the first wireless module 2 or the second wireless module 3. Since the lifting columns in the first column are not blocked, the synchronous lifting signal can be received by the lifting columns in the first column, while the lifting columns in the second column may be blocked by the load, such as containers, large trucks, rail vehicles, etc., which will block the wireless signal between the lifting columns in the first column and the lifting columns in the second column, which may cause the synchronous lifting signal of the lifting columns in the second column to be stuck.

[0030] Step S5: Monitor the wireless signal strength between any lifting column in the first column and any lifting column in the second column, select the lifting column in the first column with the maximum wireless signal strength to send a synchronous lifting signal to the kth slave in the second column, and the kth slave then sends a synchronous lifting signal to other slaves in the second column. Specifically, several wireless signal strengths will be generated between the first wireless module of the lifting column in the first column and the first wireless module of the lifting column in the second column, and several wireless signal strengths will also be generated between the second wireless module of the lifting column in the first column and the second wireless module of the lifting column in the second column. Take the lifting column with the largest wireless signal strength as the relay, and then send a synchronous lifting signal to the corresponding kth slave in the second column, and then the kth slave sends the synchronous lifting signal to other slaves in the second column, that is, select one of the lifting columns with the strongest wireless signal in the first column as the relay, which solves the problem of the slave in the second column delaying in receiving the synchronous lifting signal.

[0031] See also Figures 1 to 3 Each lifting column 1 is provided with a lifting slide 4, and the lifting slide 4 drives the lifting arm 5 to move up and down along the lifting column. The lifting arm 5 can be Figure 1 The M arm shown is the lifting point of the M arm to lift the load; the lifting arm 5 can also be Figure 3 The tire supporting arm shown in the figure supports the loaded tire; the lifting slide 4 is provided with a pull rope sensor, which monitors the lifting height of the lifting arm 5, and the host synchronizes the lifting signal to several slaves; see Figure 4 The first wireless module of the lifting column in the first row and the first wireless module of the lifting column in the second row are at the same height and paired; the second wireless module of the lifting column in the first row and the second wireless module of the lifting column in the second row are at the same height and paired.

[0032] Currently, to reduce wireless signal delays or interruptions caused by obstructions, 433 wireless modules are often used, and higher wireless power is used to ensure the reliability of wireless signal transmission. However, the high-power 433 wireless signal can easily cause other wireless signals to malfunction, such as the vehicle's remote key being unable to unlock properly. This can cause unnecessary trouble in the field of dual-post lift posts. To this end, the first and second wireless modules are both 2.4G wireless modules, such as 2.4G WiFi modules or 2.4G ZIGBEE modules. 2.4G WiFi modules and 2.4G ZIGBEE modules have weak signal diffraction capabilities and are easily obstructed. The purpose of this embodiment is to achieve the reliability of wireless synchronization signals while using 2.4G wireless modules.

[0033] See also Figures 1 to 4The first wireless module 2 and the second wireless module 3 are both installed perpendicular to the ground, and a height signal synchronization path for the lifting loads of the first and second lifting columns is formed between the first wireless module of the lifting columns in the first row and the first wireless module of the lifting columns in the second row, and a height signal synchronization backup path for the lifting loads of the first and second lifting columns is formed between the second wireless module of the lifting columns in the first row and the second wireless module of the lifting columns in the second row; when the load enters between the lifting columns in the first row and the second row, the height position of the first wireless module is close to the top of the load, and the wireless signal of the first wireless module is less blocked or not blocked, and the height position of the second wireless module is close to the bottom of the load, and the wireless signal of the second wireless module is more blocked; in the process of the load gradually rising from the lowest part, the wireless signal strength between the first and second lifting columns is in real-time change, and the monitoring period of the wireless signal strength is 30ms-100ms, and the strongest wireless signal is selected to synchronize the height information, thereby ensuring the synchronization between the first and second lifting columns.

[0034] In order to improve the flexibility and adaptability of the lifting columns in the network, for example, to be able to lift family cars, the lifting columns in all the networks can be further configured into groups. For example, the host 11 and the first slave 15 are configured as the first group. When a small vehicle needs to be lifted, the lifting columns of the first group are selected for operation. The lifting arms of the lifting columns use M arms. The host 11 and the first slave 15 lift the load synchronously, and the other slaves are not started, thereby realizing the operation of two lifting columns in the network to lift small vehicles; for another example, the host 11, the first slave 15, the second slave 12 and the third slave 16 are configured as the second group. When a small vehicle needs to be lifted, the lifting columns of the second group are selected for operation. The lifting arms of the lifting columns use tire supporting arms. The host 11, the first slave 15, the second slave 12 and the third slave 16 lift the load synchronously, and the other slaves are not started, thereby realizing the operation of two lifting columns in the network to lift small vehicles. Example 2

[0035] See also Figure 4 Based on Example 1, n=8 is selected, that is, 8 lifting columns are networked according to the wireless collaborative lifting method for multiple lifting columns described in Example 1. The host 11, the second slave 12, the fourth slave 13, and the sixth slave 14 form the first column, and the first slave 15, the third slave 16, the fifth slave 17, and the seventh slave 18 form the second column. The signal strengths between any first wireless module in the first column and any first wireless module in the second column are a1, a2, a3, ..., a respectively. 16 The signal strengths between any second wireless module in the first column and any second wireless module in the second column are b1, b2, b3, ... b 16; Take max(a1, a2, a3, ...a 16 , b1, b2, b3, …b 16 ) The wireless module corresponding to the first column serves as the first relay wireless module, and the wireless module corresponding to the second column serves as the second relay wireless module; the first relay wireless module transmits the synchronous lifting signal to the second relay wireless module; the second relay wireless module transmits the synchronous lifting signal to other slaves in the second column, that is, the lifting column with the largest wireless signal strength is taken as the relay, and then the synchronous lifting signal is sent to the corresponding slave in the second column, which solves the problem that the slaves in the second column receive the synchronous lifting signal with delay.

[0036] The wireless collaborative lifting method for multiple lifting columns described in Example 2 is the same as that in Example 1. Please refer to Example 1 and will not be repeated here.

Claims

1. A wireless collaborative lifting method for a plurality of lifting columns, characterized in that: The system comprises n lifting columns, wherein a first wireless module is arranged near the top of each lifting column, and a second wireless module is arranged near the bottom of each lifting column; The following steps are involved: Any one of the n lifting columns is configured as a host, wherein the host generates a random synchronization code, where n is greater than or equal to 6 and n is an even number; Inputting the random synchronization code into n-1 lifting columns respectively, the n-1 lifting columns are configured as slaves, and the slaves are numbered according to the pairing order; The master and the i-th slave are arranged in the first row, i is an even number, and the m-th slave is arranged in the second row, m is an odd number. The lifting columns in the first row and the lifting columns in the second row lift the load between them synchronously. The host sends a synchronous lifting signal through the first wireless module or the second wireless module, and the slaves in the first column receive the synchronous lifting signal; Monitor the wireless signal strength between any lifting column in the first column and any lifting column in the second column, select the lifting column in the first column with the maximum wireless signal strength to send a synchronous lifting signal to the kth slave in the second column, and the kth slave then sends a synchronous lifting signal to other slaves in the second column.

2. The wireless collaborative lifting method for a plurality of lifting columns according to claim 1, characterized in that: The master and the first slave are configured as the first group, and the lifting column of the first group is selected for operation. The master and the first slave lift the load synchronously, and other slaves are not started.

3. The wireless collaborative lifting method for a plurality of lifting columns according to claim 1, characterized in that: The host, the first slave, the second slave and the third slave are configured as the second group, and the lifting column operation of the second group is selected. The host, the first slave, the second slave and the third slave lift the load synchronously, and the other slaves are not started.

4. The wireless collaborative lifting method for a plurality of lifting columns according to any one of claims 1 to 3, characterized in that: The first wireless module of the lifting column in the first row and the first wireless module of the lifting column in the second row are at the same height and paired; The second wireless module of the lifting column of the first row and the second wireless module of the lifting column of the second row are at the same height and paired.

5. The wireless collaborative lifting method for a plurality of lifting columns according to claim 4, characterized in that: The first wireless module and the second wireless module are both 2.4G wireless modules.

6. The wireless collaborative lifting method for a plurality of lifting columns according to claim 4, characterized in that: The monitoring period of wireless signal strength is 30ms-100ms.

7. The wireless collaborative lifting method for a plurality of lifting columns according to claim 4, wherein: The first wireless module and the second wireless module are both installed perpendicular to the ground.

8. The wireless collaborative lifting method for a plurality of lifting columns according to claim 4, wherein: n=8； The master, the second slave, the fourth slave and the sixth slave are in the first column, and the first slave, the third slave, the fifth slave and the seventh slave are in the second column; The signal strengths between any first wireless module in the first column and any first wireless module in the second column are a1, a2, a3, ..., a 16 ; The signal strengths between any second wireless module in the first column and any second wireless module in the second column are b1, b2, b3, ... b 16 ; Take max(a1, a2, a3, ...a 16 , b1, b2, b3, …b 16 ) The corresponding wireless module in the first column serves as a first relay wireless module, and the corresponding wireless module in the second column serves as a second relay wireless module; Synchronously transmitting a rising and falling signal to the second relay wireless module through the first relay wireless module; The second relay wireless module synchronously raises and lowers signals to other slaves in the second column.

9. The wireless collaborative lifting method for a plurality of lifting columns according to claim 4, characterized in that: Each lifting column is provided with a lifting slide, and the lifting slide drives the lifting arm to move up and down along the lifting column.

10. The wireless collaborative lifting method for a plurality of lifting columns according to claim 9, wherein: The lifting platform is provided with a pull rope sensor, which monitors the lifting height of the lifting arm, and the host synchronizes the lifting signal to several slaves.

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