Wireless synchronous double-column lifting machine

Abstract

The invention aims to disclose a wireless synchronous double-column lifting machine, which relates to the technical field of vehicle lifting control and comprises a first lifting column and a second lifting column which are mounted on the ground, a first wireless module is mounted on the side wall close to the top of the first lifting column, and a second wireless module is mounted on the side wall of the first lifting column; a third wireless module is mounted on the side wall close to the top of the second lifting column, and a fourth wireless module is mounted on the side wall of the second lifting column; in the vehicle lifting process of the first lifting column and the second lifting column, if a is larger than or equal to b, a first wireless module and a third wireless module are adopted to synchronize height signals; if a is smaller than b, the second wireless module and the fourth wireless module are adopted to synchronize the height signals, and the technical effects are that through the two pairs of antennas, when a vehicle is lifted to any height of the double-column lifting machine, it can be guaranteed that the signal strength between one pair of antennas meets the requirement, and the reliability of the double-column lifting machine is improved. And communication delay or interruption between the antennas due to the fact that the vehicle body shields the signal is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lifting control, and in particular to a wireless synchronous double-column lift. Background Art

[0002] At present, the height synchronization of two-post lifts is achieved through a locking mechanism and a steel wire rope. The synchronization is related to the tightness of the steel wire rope. The adjustment of the tightness of the steel wire rope requires the experience of after-sales or operators. How to design a two-post lift that does not require steel wire rope synchronization is one of the technical difficulties that need to be overcome.

[0003] In view of this, it is necessary to develop a wireless synchronous two-post lift 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 synchronous two-post lift.

[0005] To achieve the above-mentioned object of the invention, the present invention provides a wireless synchronous two-post lift, comprising a first lifting post and a second lifting post mounted on the ground; A first wireless module is installed on a side wall close to the top of the first lifting column, and a second wireless module is installed on a side wall close to the bottom of the first lifting column; A third wireless module is installed on the side wall close to the top of the second lifting column, and a fourth wireless module is installed on the side wall close to the bottom of the second lifting column; The second wireless module and the fourth wireless module are at the same height and paired; The first wireless module and the third wireless module are at the same height and paired; During the process of the first lifting post and the second lifting post lifting the vehicle, monitoring the received signal strength between the first wireless module and the third wireless module as a, and monitoring the received signal strength between the second wireless module and the fourth wireless module as b; If a≥b, synchronizing the height signals of the first lifting post and the second lifting post to lift the vehicle using the first wireless module and the third wireless module; If a<b, the second wireless module and the fourth wireless module are used to synchronize the height signals of the first lifting post and the second lifting post for lifting the vehicle.

[0006] Preferably, the first wireless module, the second wireless module, the third wireless module and the fourth wireless module are all 2.4G wireless modules.

[0007] Preferably, the connection lines of the first wireless module, the second wireless module, the third wireless module and the fourth wireless module form a rectangle.

[0008] Preferably, a first shell and a second shell are provided on the side wall of the top of the first lifting column, the first wireless module is installed on the top of the first shell, and the second wireless module is installed on the bottom of the second shell.

[0009] Preferably, a third shell and a fourth shell are provided on the side wall of the top of the second lifting column, the third wireless module is installed on the top of the third shell, and the fourth wireless module is installed on the bottom of the fourth shell.

[0010] Preferably, the first lifting column is provided with a first lifting slide, and the first lifting slide drives the first M-shaped support arm or the first tire-holding support arm to rise and fall along the first lifting column. The second lifting column is provided with a second lifting slide, and the second lifting slide drives the second M-shaped support arm or the second tire-holding support arm to rise and fall along the second lifting column.

[0011] Preferably, the monitoring period of the received signal strength is 20ms-50ms.

[0012] Preferably, the first wireless module, the second wireless module, the third wireless module and the fourth wireless module are all installed perpendicular to the ground.

[0013] Preferably, the first lifting slide is provided with a first pull-wire sensor, the first pull-wire sensor monitors the lifting height of the first M-shaped support arm or the first tire-holding support arm, and the first pull-wire sensor sends the monitored height signal to the first wireless module or the second wireless module; The second lifting slide is provided with a second pull-wire sensor, which monitors the lifting height of the second M-shaped support arm or the second tire-type support arm, and the second pull-wire sensor sends the monitored height signal to the third wireless module or the fourth wireless module.

[0014] Preferably, if a≥b, the first draw-wire sensor sends the height signal it monitors to the first wireless module, and the second draw-wire sensor sends the height signal it monitors to the third wireless module, and the height information is synchronized through the first wireless module and the third wireless module; If a<b, the first drawstring sensor sends the height signal it monitors to the second wireless module, and the second drawstring sensor sends the height signal it monitors to the fourth wireless module, and the height information is synchronized through the second wireless module and the fourth wireless module.

[0015] Compared with the prior art, the technical effects of the present invention are as follows: in the process of lifting the vehicle from the bottom of the two-post lift to the highest point, due to the obstruction of the vehicle body, especially when the vehicle is lifted to the highest point, the vehicle is blocked between the first wireless module and the third wireless module, resulting in a large attenuation of the signal strength between the first wireless module and the third wireless module, while there is no obstruction between the second wireless module and the fourth wireless module, and the signal between the two is stronger. Through the two pairs of antennas of the present invention, when the vehicle is lifted to any height of the two-post lift, it can be ensured that the signal strength between one pair of antennas meets the requirements, avoiding communication delays or interruptions between the antennas due to the vehicle body blocking the signal, and making the synchronization between the first lifting post and the second lifting post more precise. 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 wireless synchronous two-post lift of the present invention.

[0018] Figure 2 It is a schematic diagram of the main structure of the wireless synchronous two-post lift of the present invention.

[0019] Figure 3 It is a schematic diagram of the circuit principle of the wireless synchronous two-post lift of the present invention.

[0020] Among them, 1. First lifting column; 11. Side wall; 12. First shell; 13. Second shell; 14. First lifting slide; 15. First M-shaped support arm or first tire-holding support arm; 2. First wireless module; 3. Second wireless module; 4. Second lifting column; 41. Side wall; 42. Third shell; 43. Fourth shell; 44. Second lifting slide; 45. Second M-shaped support arm or second tire-holding support arm; 5. Third wireless module; 6. Fourth wireless module; 7. First pull rope sensor; 8. Button. DETAILED DESCRIPTION

[0021] 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.

[0022] 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

[0023] Ginseng Figures 1 to 3 As shown, this embodiment discloses a specific implementation of a wireless synchronous two-post lift.

[0024] Wireless synchronous two-post lift, reference Figures 1 to 3 As shown, it includes a first lifting column 1 and a second lifting column 4 installed on the ground; a first wireless module 2 is installed on the side wall 11 near the top of the first lifting column 1, and the first wireless module 2 is preferably 0.0m-0.8m away from the top, especially preferably 0.5m-0.8m, see Figure 2 L, the side wall 11 near the bottom of the first lifting column 1 is provided with a second wireless module 3, the second wireless module 3 is preferably 0.3m-1.2m from the ground, particularly preferably 0.8m-1.2m, see Figure 2 near the side wall 41 of the second lifting column 4 at the top of the third wireless module 5 is installed, the third wireless module 5 is preferably 0.0m-0.8m from the top, particularly preferably 0.5m-0.8m, see Figure 2 H, the side wall 41 near the bottom of the second lifting column 4 is installed with a fourth wireless module 6, the fourth wireless module 6 is preferably 0.3m-1.2m from the ground, especially preferably 0.8m-1.2m, see Figure 2 N; the second wireless module 3 and the fourth wireless module 6 are at the same height and paired; the first wireless module 2 and the third wireless module 5 are at the same height and paired; during the process of the first lifting column 1 and the second lifting column 4 lifting the vehicle, the received signal strength between the first wireless module 2 and the third wireless module 5 is monitored as a, and the received signal strength between the second wireless module 3 and the fourth wireless module 6 is monitored as b; if a≥b, the first wireless module 2 and the third wireless module 5 are used to synchronize the height signals of the first lifting column 1 and the second lifting column 4 lifting the vehicle; if a<b, the second wireless module 3 and the fourth wireless module 6 are used to synchronize the height signals of the first lifting column 1 and the second lifting column 4 lifting the vehicle.

[0025] At present, in order to reduce the delay or interruption of wireless signals caused by obstruction, 433 wireless modules are often used, and a 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 not work properly, such as the vehicle's remote key cannot be unlocked normally, which will cause unnecessary trouble in the field of two-post lifts. For this reason, see Figure 1 , the first wireless module 2, the second wireless module 3, the third wireless module 5 and the fourth wireless module 6 are all 2.4G wireless modules, such as a 2.4G WIFI module or a 2.4G ZIGBEE module. The signal diffraction capability of the 2.4G WIFI module and the 2.4G ZIGBEE module is weak and easily blocked; the connection line of the first wireless module 2, the second wireless module 3, the third wireless module 5 and the fourth wireless module 6 forms a rectangle, and the first wireless module 2, the second wireless module 3, the third wireless module 5 and the fourth wireless module 6 are all perpendicular to the ground Installation, the first wireless module 2 and the third wireless module 5 form a height signal synchronization path for the first lifting column 1 and the second lifting column 4 to lift the vehicle, and the second wireless module 3 and the fourth wireless module 6 form a height signal synchronization backup path for the first lifting column 1 and the second lifting column 4 to lift the vehicle; when the vehicle enters between the first lifting column 1 and the second lifting column 4, the height position of the second wireless module 3 and the fourth wireless module 6 is close to the roof, while the height of the first wireless module 2 and the third wireless module 5 is much higher than the roof and there is no obstruction between the two. In this state, a≥b, then the first wireless module 2 and the third wireless module 5 are used to synchronize the height signal of the first lifting column 1 and the second lifting column 4 to lift the vehicle; in the process of the vehicle gradually rising from the lowest point, the signal between the second wireless module 3 and the fourth wireless module 6 is gradually blocked by the vehicle body and the signal strength is weakened. When the vehicle rises to the highest point or close to the highest point, the first wireless module 2 and the third wireless module 5 are blocked by the vehicle body and the received signal becomes weak, and there is no obstruction between the second wireless module 3 and the fourth wireless module 6 and the received signal becomes strong. At this time, a<b, then the second wireless module is used 3 and the fourth wireless module 6 synchronize the vehicle's lifting height signals between the first and second lifting posts 1 and 4. In this embodiment, when using a 2.4G wireless module, such as a 2.4G Wi-Fi module or a 2.4G Zigbee module, two antenna modules are designed to synchronize the vehicle's lifting height signals between the first and second lifting posts 1 and 4 in real time at any vehicle height during the lifting process. This avoids delays or interruptions in the 2.4G wireless signal due to vehicle body obstruction, resulting in more precise synchronization between the first and second lifting posts. To further ensure the reliability of 2.4G wireless signal communication, the received signal strength monitoring period is 20ms-50ms, i.e., the received signal strength a and received signal strength b are monitored and compared every 20ms-50ms.

[0026] See also Figure 1 The side wall 11 at the top of the first lifting column 1 is provided with a first shell 12 and a second shell 13, the first wireless module 2 is installed on the top of the first shell 12, and the first wireless module 2 is close to the edge of the top of the first shell 12 to reduce the shielding of the first lifting column 1 to the signal, and the second wireless module 3 is installed at the bottom of the second shell 13, and the second wireless module 3 is close to the edge of the bottom of the second shell 13 to reduce the shielding of the first lifting column 1 to the signal; the side wall 41 at the top of the second lifting column 4 is provided with a third shell 42 and a fourth shell 43, the third wireless module 5 is installed on the top of the third shell 42, and the third wireless module 5 is close to the edge of the top of the third shell 42 to reduce the shielding of the second lifting column 4 to the signal, and the fourth wireless module 6 is installed at the bottom of the fourth shell 43, and the fourth wireless module 6 is close to The edge of the bottom of the fourth shell 43 is to reduce the obstruction of the signal by the second lifting column 4; the first shell 12 can accommodate the hydraulic pump assembly of the first lifting column 1, the second shell 13 can accommodate the safety locking assembly of the first lifting column 1, the third shell 42 can accommodate the hydraulic pump assembly of the second lifting column 4, and the fourth shell 43 can accommodate the safety locking assembly of the second lifting column 4; the first lifting column 1 is provided with a first lifting slide 14, the first lifting slide 14 drives the first M-type support arm or the first tire-holding support arm 15 to rise and fall along the first lifting column 1, the second lifting column 4 is provided with a second lifting slide 44, the second lifting slide 44 drives the second M-type support arm or the second tire-holding support arm 45 to rise and fall along the second lifting column 4, the first M-type support arm or the first tire-holding support arm 15 and the second M-type support arm or the second tire-holding support arm 45 lift the vehicle chassis.

[0027] See also Figures 1 to 3 The synchronous working principle of the first lifting column 1 and the second lifting column 4 is as follows: the first lifting slide 14 is provided with a first pull-wire sensor, which monitors the lifting height of the first M-shaped support arm or the first tire-type support arm 15, and the first pull-wire sensor sends the height signal it monitors to the first wireless module 2 or the second wireless module 3; the second lifting slide 44 is provided with a second pull-wire sensor, which monitors the lifting height of the second M-shaped support arm or the second tire-type support arm 45, and the second pull-wire sensor sends the height signal it monitors to the third wireless module 5 or the fourth wireless module 6; see Figure 3Taking the first lifting column 1 as an example, the first lifting column 1 is controlled by the MCU controller. When the vehicle needs to be lifted, the start button 8 is pressed, the vehicle is lifted, and the first pull-wire sensor 7 converts the height signal it monitors through the MCU controller and sends it to the second wireless module 3 or the first wireless module 2. The second lifting column 4 receives the height synchronization signal and starts; if a≥b, the first pull-wire sensor sends the height signal it monitors to the first wireless module 2, and the second pull-wire sensor sends the height signal it monitors to the third wireless module 5, and the height information is synchronized through the first wireless module 2 and the third wireless module 5; if a<b, the first pull-wire sensor sends the height signal it monitors to the second wireless module 3, and the second pull-wire sensor sends the height signal it monitors to the fourth wireless module 6, and the height information is synchronized through the second wireless module 3 and the fourth wireless module 6.

Claims

1. Wireless synchronous two-post lift, characterized by: It includes a first lifting column and a second lifting column mounted on the ground; A first wireless module is installed on a side wall close to the top of the first lifting column, and a second wireless module is installed on a side wall close to the bottom of the first lifting column; A third wireless module is installed on the side wall close to the top of the second lifting column, and a fourth wireless module is installed on the side wall close to the bottom of the second lifting column; The second wireless module and the fourth wireless module are at the same height and paired; The first wireless module and the third wireless module are at the same height and paired; During the process of the first lifting post and the second lifting post lifting the vehicle, monitoring the received signal strength between the first wireless module and the third wireless module as a, and monitoring the received signal strength between the second wireless module and the fourth wireless module as b; If a≥b, synchronizing the height signals of the first lifting post and the second lifting post to lift the vehicle using the first wireless module and the third wireless module; If a<b, the second wireless module and the fourth wireless module are used to synchronize the height signals of the first lifting post and the second lifting post for lifting the vehicle.

2. The wireless synchronous two-post lift according to claim 1, characterized in that: The first wireless module, the second wireless module, the third wireless module and the fourth wireless module are all 2.4G wireless modules.

3. The wireless synchronous two-post lift according to claim 2, characterized in that: The connection lines of the first wireless module, the second wireless module, the third wireless module and the fourth wireless module form a rectangle.

4. The wireless synchronous two-post lift according to any one of claims 1 to 3, characterized in that: A first shell and a second shell are provided on the side wall of the top of the first lifting column. The first wireless module is installed on the top of the first shell, and the second wireless module is installed on the bottom of the second shell.

5. The wireless synchronous two-post lift according to claim 4, characterized in that: A third shell and a fourth shell are provided on the side wall of the top of the second lifting column. The third wireless module is installed on the top of the third shell, and the fourth wireless module is installed on the bottom of the fourth shell.

6. The wireless synchronous two-post lift according to claim 5, characterized in that: The first lifting column is provided with a first lifting slide, and the first lifting slide drives the first M-shaped support arm or the first tire-holding support arm to rise and fall along the first lifting column. The second lifting column is provided with a second lifting slide, and the second lifting slide drives the second M-shaped support arm or the second tire-holding support arm to rise and fall along the second lifting column.

7. The wireless synchronous two-post lift according to claim 4, characterized in that: The monitoring period of the received signal strength is 20ms-50ms.

8. The wireless synchronous two-post lift according to claim 4, wherein: The first wireless module, the second wireless module, the third wireless module and the fourth wireless module are all installed perpendicular to the ground.

9. The wireless synchronous two-post lift according to claim 6, wherein: The first lifting slide is provided with a first pull-wire sensor, which monitors the lifting height of the first M-shaped support arm or the first tire-holding support arm, and sends the monitored height signal to the first wireless module or the second wireless module; The second lifting slide is provided with a second pull-wire sensor, which monitors the lifting height of the second M-shaped support arm or the second tire-type support arm, and the second pull-wire sensor sends the monitored height signal to the third wireless module or the fourth wireless module.

10. The wireless synchronous two-post lift according to claim 9, wherein: If a≥b, the first drawstring sensor sends the height signal it monitors to the first wireless module, and the second drawstring sensor sends the height signal it monitors to the third wireless module, and the height information is synchronized through the first wireless module and the third wireless module; If a<b, the first drawstring sensor sends the height signal it monitors to the second wireless module, and the second drawstring sensor sends the height signal it monitors to the fourth wireless module, and the height information is synchronized through the second wireless module and the fourth wireless module.

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