Three-axis multi-directional electric smart display desktop robot arm

Abstract

The present invention discloses a three-axis multi-directional electric intelligent display desktop mechanical arm, which relates to the technical field of display brackets, comprises a rotating base, a supporting lifting column is fixed on the top of the rotating base, and a pitch adjustment frame is installed on the top of the front end surface of the supporting lifting column. The rotating base comprises a supporting base, a driving motor is embedded in the bottom of the supporting base, a circular recessed groove is provided on the top of the supporting base, an annular frame is fixed in the recessed groove, a bearing seat is fixed on the top of the annular frame, and the top and bottom of the bearing seat are respectively rotatably connected with an upper cover plate and a lower cover plate that are synchronously deflected; in the present invention, when the upper cover plate and the lower cover plate on the rotating base rotate forward or reverse, the power supply line on the top of the lower cover plate can supply power to the internal components of the supporting lifting column, the power supply line will not be entangled, the safety hazard when the device is used is reduced, and the display screen is always ensured to be at the best viewing angle. At the same time, the pitch angle can be adjusted to meet the needs of different usage scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of display brackets, and in particular to a three-axis multi-directional electric intelligent display desktop mechanical arm. Background Art

[0002] The monitor arms currently available on the market are mainly divided into two types: pneumatic springs and mechanical springs. These two types of monitor arms mainly use manual arms to move the arm to move the monitor up and down, left and right, and forward and backward. Pneumatic spring arms are usually smoother to operate and easier to adjust, but there may be a problem of losing air pressure when not used for a long time. Although mechanical spring arms may not be as smooth as pneumatic springs when adjusted, they are usually more stable and durable.

[0003] Monitor stand arms play an important role in modern office and home entertainment, but according to user feedback and market analysis, existing products have some problems and shortcomings: 1. Stability issues: Some stands may be unstable when bearing heavy monitors, causing the monitor to "droop" or shake; at the same time, when the monitor position is adjusted, the power cord is easy to entangle, causing safety hazards. 2. Difficult to adjust: The adjustment mechanism of some stands is not smooth enough, and users may need to spend a lot of effort to adjust the position of the monitor. In addition, the adjustment tolerance of some stands is different, resulting in different degrees of tilt when placed in different positions, and each move requires readjustment. 3. Complex installation: Some users reported that the installation process of some stands is complicated, requiring a certain amount of strength and skills, which may be a challenge for non-professionals. 4. Lack of intelligence: Most stands on the market are still manually adjusted, lacking intelligence and automation functions, which is inconsistent with the trend of modern smart homes.

[0004] With the development of technology and the improvement of people's living standards, the younger consumer groups are eager for an automated, electric and intelligent display stand to replace the mechanical arm. The current market is in urgent need of an intelligent electric robot multi-axis and multi-directional rotating display stand to solve the above problems. This integrated intelligent and electric functional display mechanical arm can better suit the younger customer groups, improve user experience, and adapt to multi-scenario applications.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The purpose of the present invention is to provide a three-axis multi-directional electric intelligent display desktop robot arm to solve the problems mentioned in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides a three-axis multi-directional electric intelligent display desktop mechanical arm, including a rotating base, a supporting lifting column is fixed on the top of the rotating base, a pitch adjustment frame is installed on the top of the front end surface of the supporting lifting column, the rotating base includes a supporting seat, a driving motor is embedded at the bottom of the supporting seat, a circular recessed groove is provided on the top of the supporting seat, a ring frame is fixed in the recessed groove, a bearing seat is fixed on the top of the ring frame, the top and bottom of the bearing seat are respectively rotatably connected with an upper cover plate and a lower cover plate that are synchronously deflected, and the rotating shaft at the output end of the driving motor penetrates The top of the support seat coincides with the axis of the concave groove, and the top of the upper cover is fixedly installed with the support lifting column by a fixing plate and screws; the bottom of the lower cover is fixed with a circuit board 2, and a circuit board 1 is arranged horizontally and fixed in the ring frame below the circuit board 2, and the top of the circuit board 1 is provided with four concentric ring copper foil circuit boards corresponding to the four copper contacts of the circuit board 2, and the four copper contacts at the bottom of the circuit board 2 are in contact with the four concentric ring copper foil circuit boards; the power supply line at the output end of the top of the circuit board 2 passes through the lower cover, the upper cover and the fixing plate in turn and extends into the support lifting column. When the upper and lower covers on the rotating base rotate forward or reverse, the power supply line can supply power to the components inside the support lifting column, and the power supply line will not be entangled, reducing the safety hazard when the device is used.

[0008] Furthermore, an annular partition is provided in the middle of the bearing seat, and the top and bottom of the partition are respectively embedded with silent bearing 1 and silent bearing 2, and the bottom of the upper cover is provided with an annular protrusion, which is clamped on the inner arc wall of silent bearing 1, and the upper cover and the lower cover are fixed by bolts, and the center of the upper cover and the center of the fixed plate are both provided with apertures for the power supply line to pass through. The annular partition can prevent the two bearings from contacting, and at the same time can reduce the pressure on the inner ring of the bearing raceway.

[0009] Furthermore, the top of the bearing seat is provided with four evenly distributed steel balls, the bottom of the upper cover plate is provided with a circular ring-shaped guide rail which is recessed and located above the steel balls, and the top of the steel balls is located in the guide rail, so that the components installed on the top of the upper cover plate can rotate smoothly.

[0010] Furthermore, the supporting lifting column includes a main support fixed to the top of the fixed plate and arranged vertically, a sliding channel is provided on the front end surface of the main support, a baffle is fixed at the sliding channel and matches the gap with the main support, a vertically arranged electric push rod 1 is fixed in the main support, a slider is fixed at the output end of the electric push rod 1, both ends of the bottom of the slider are penetrated and slidably connected with a guide rod fixed in the main support, a connecting block is fixed on the front end surface of the slider, the top cross-section of the connecting block is a "ㄇ"-shaped structure, and both ends of the connecting block pass through the gap between the sliding channel and the baffle and are fixedly connected to the pitch adjustment frame. The power supply line at the top output end of the second circuit board supplies power to the electric push rod 1, and the supporting lifting column realizes the up and down movement of the pitch adjustment frame and the display screen installed on the pitch adjustment frame.

[0011] Furthermore, both ends of the bottom of the slider are penetrated and fixedly connected with linear bearings, which are sleeved on the outer wall of the guide rod and slidably connected thereto, and the slider also includes two upper and lower mounting plates, and a slider hole for fixing the output end of the electric push rod is provided at the center of the bottom of the slider. The stability of the slider's up and down movement is improved, the lateral force of the slider and the electric push rod's forward tilt is reduced, and the service life of the device is extended.

[0012] Furthermore, the pitch adjustment frame includes a horizontally arranged mounting block 1, a mounting block 2 is fixed to the front end surface of the mounting block 1, a pressure plate that matches the gap with the mounting block 2 is fixed to the front end surface of the mounting block 2, the side walls of the mounting block 2 and the pressure plate that are close to each other are both arc-shaped structures, a VESA adapter plate is pressed and slidably connected between the mounting block 2 and the pressure plate, two limit blocks are fixed to the rear end surface of the top of the VESA adapter plate, the side walls of the two limit blocks that are close to each other are both provided with arc grooves, a mounting groove is provided at the top of the mounting block 1, an electric push rod 2 that is tilted upward is fixed in the mounting groove, a ball head is fixed to the output end of the electric push rod 2, the ball head is rotatably connected to the ball groove formed by the two arc grooves, and a top cover located above the electric push rod 2 is fixed to the top of the mounting block 1. The output end of the electric push rod 2 moves forward or backward, so that the ball head drives the limit block and the VESA adapter plate to move synchronously, and the pitch angle of the display mounted on the VESA adapter plate is adjusted, and the top cover protects the electric push rod 2 to prevent the electric push rod 2 from being damaged by collision.

[0013] Furthermore, a control switch is installed on the support base, and one or more of a camera, a face recognition module, and an environment detection module are installed on the support base or the support lifting column, so as to realize the multifunctional expansion of the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Improved power supply stability and safety: The rotating base adopts a unique design. The upper cover and the lower cover are an integrated structure, which can be rotated forward and reversed synchronously. Through the concentric ring copper foil circuit boards and copper contacts of circuit board 2 and circuit board 1, the power supply line can continuously and stably supply power during rotation without entanglement, effectively reducing the safety hazards when using the device and ensuring the stable operation of the equipment.

[0016] 2. Structural optimization and enhanced durability: An annular partition is set inside the bearing seat, and the silent bearing 1 and silent bearing 2 are embedded respectively, and the annular convex block of the upper cover plate and the steel ball guide structure are matched to block the bearing contact and relieve the pressure, and make the parts rotate more smoothly, reduce the wear of the parts, and extend the service life of the device. The slider in the support lifting column cooperates with the guide rod through the linear bearing, which effectively improves the stability of the slider moving up and down, reduces the influence of the forward lateral force on the slider and the electric push rod 1, and further improves the durability of the overall structure.

[0017] 3. Highly flexible and precise adjustment: Through automation technology, the display position can be freely moved and adjusted according to needs, with high-precision positioning and operation capabilities. With the help of standard VESA plates, it can accurately connect a variety of displays, always ensuring that the display is at the best viewing angle, which is convenient for users to view and operate. At the same time, the pitch angle can be adjusted to meet the needs of different usage scenarios. It is easy to adjust and reduce the occurrence of "drooping" or shaking of the display.

[0018] 4. Strong compatibility and space saving: The bracket arm adopts the universal wall-mounting standard, supports a variety of VESA specification monitors, has wide compatibility, and using this mechanical arm can save desktop space, make the desktop more concise, and easy to install.

[0019] 5. Electric and intelligent experience upgrade: realize automation and intelligence of display adjustment direction, built-in advanced control system, support multiple interaction methods such as voice recognition and gesture recognition, intuitive and convenient operation, greatly enhancing user experience.

[0020] 6. Rich expansion of multifunctional applications: In addition to the basic display function, it can integrate multiple devices such as cameras, face recognition modules, and environmental detection modules to realize multifunctional applications such as remote monitoring, face recognition, and environmental monitoring, expand the use scenarios of the equipment, and is suitable for schools, hospital wards, retail stores, exhibition venues and other environments, bringing more possibilities and development opportunities to various industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a three-axis multi-directional electric intelligent display desktop robotic arm;

[0022] Figure 2 This is an exploded view of the rotating base in the three-axis multi-directional electric smart display desktop robot arm;

[0023] Figure 3 It is a structural schematic diagram of the connection between the circuit board 1 and the circuit board 2 in the three-axis multi-directional electric intelligent display desktop robot arm;

[0024] Figure 4 It is a structural diagram of the supporting lifting column in the three-axis multi-directional electric intelligent display desktop robot arm;

[0025] Figure 5 This is an exploded view of the pitch adjustment frame in the three-axis multi-directional electric smart display desktop robotic arm.

[0026] In the figure:

[0027] 10. Rotating base; 11. Support seat; 12. Ring frame; 13. Bearing seat; 14. Silent bearing 2; 15. Silent bearing 1; 16. Upper cover plate; 17. Lower cover plate; 18. Steel ball;

[0028] 20. Support lifting column; 21. Main frame; 22. Sliding channel; 23. Electric push rod 1; 24. Sliding block; 25. Baffle;

[0029] 30. Pitch adjustment bracket; 31. Mounting block 1; 32. Connecting block; 33. Electric push rod 2; 34. Ball head; 35. Mounting block 2; 36. Press plate; 37. VESA adapter plate; 38. Limit block; 39. Top cover;

[0030] 40. Circuit board one; 41. Rotating shaft; 42. Circuit board two;

[0031] 50. Depression groove;

[0032] 60. Fixed plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-5 The present invention provides a technical solution: a three-axis multi-directional electric intelligent display desktop robot arm, comprising a rotating base 10, a supporting lifting column 20 is fixed on the top of the rotating base 10, a pitch adjustment frame 30 is installed on the top of the front end surface of the supporting lifting column 20, the rotating base 10 comprises a supporting seat 11, a control switch is installed on the supporting seat 11, and one or more of a camera, a face recognition module, and an environment detection module are installed on the supporting seat 11 or the supporting lifting column 20 to realize the multifunctional expansion of the device; a driving motor is embedded at the bottom of the supporting seat 11, a circular recessed groove 50 is provided on the top of the supporting seat 11, a ring frame 12 is fixed in the recessed groove 50, a bearing seat 13 is fixed on the top of the ring frame 12, and the top and bottom of the bearing seat 13 are respectively rotatably connected with The upper cover plate 16 and the lower cover plate 17 are deflected synchronously, and the rotating shaft 41 at the output end of the driving motor passes through the top of the support seat 11 and coincides with the axis line of the recessed groove 50. The top of the upper cover plate 16 is fixedly installed with the support lifting column 20 by the fixing plate 60 and screws; the bottom of the lower cover plate 17 is fixed with the circuit board 2 42, and the circuit board 1 40 is arranged horizontally and fixed in the annular frame 12 below the circuit board 2 42. The top of the circuit board 1 40 is provided with four concentric circles and four ring copper foil circuit boards corresponding to the four copper contacts of the circuit board 2 42, and the four copper contacts at the bottom of the circuit board 2 42 are in contact with the four concentric circle ring copper foil circuit boards; the power supply line at the output end of the top of the circuit board 2 42 passes through the lower cover plate 17, the upper cover plate 16 and the fixing plate 60 in sequence and extends into the support lifting column 20.

[0035] It should be noted here that when the upper cover plate 16 and the lower cover plate 17 on the rotating base 10 rotate forward or reverse, the power supply line can supply power to the components inside the supporting lifting column 20, and the power supply line will not be entangled, thereby reducing safety hazards when the device is used.

[0036] An annular partition is provided in the middle of the bearing seat 13, and a silent bearing 15 and a silent bearing 2 14 are respectively embedded on the top and bottom of the partition. An annular protrusion is provided at the bottom of the upper cover plate 16, and the annular protrusion is clamped on the inner arc wall of the silent bearing 15. The upper cover plate 16 and the lower cover plate 17 are fixed by bolts. Apertures for passing the power supply line are reserved at the center of the upper cover plate 16 and the center of the fixing plate 60; four evenly distributed steel balls 18 are provided on the top of the bearing seat 13, and a circular ring-shaped guide rail which is recessed and located above the steel balls 18 is provided at the bottom of the upper cover plate 16, and the top of the steel balls 18 is located in the guide rail.

[0037] It should be noted that the annular partition can prevent the two bearings from contacting each other and relieve the pressure on the inner ring of the bearing raceway, so that the components installed on the top of the upper cover plate 16 can rotate smoothly.

[0038] The supporting lifting column 20 includes a main frame 21 fixed to the top of the fixing plate 60 and vertically arranged, a sliding channel 22 is provided on the front end surface of the main frame 21, a baffle 25 which is fixed at the sliding channel 22 and matches the clearance therewith, a vertically arranged electric push rod 23 is fixed in the main frame 21, a slider 24 is fixed at the output end of the electric push rod 23, both ends of the bottom of the slider 24 are penetrated and slidably connected with guide rods fixed in the main frame 21, a connecting block 32 is fixed on the front end surface of the slider 24, the top cross-section of the connecting block 32 is a "ㄇ"-shaped structure, and both ends of the connecting block 32 pass through the gap between the sliding channel 22 and the baffle 25 and are fixedly connected to the pitch adjustment frame 30.

[0039] It should be noted here that: the power supply line at the top output end of the second circuit board 42 supplies power to the electric push rod 1 23, and the support lifting column 20 realizes the up and down movement of the pitch adjustment frame 30 and the display screen installed on the pitch adjustment frame 30.

[0040] Both ends of the bottom of the slider 24 are penetrated and fixedly connected with linear bearings, which are sleeved on the outer wall of the guide rod and slidably connected thereto. The slider 24 also includes two upper and lower mounting plates. A slider hole for fixing the output end of the electric push rod 23 is provided at the center of the bottom of the slider 24.

[0041] It should be noted here that the stability of the up and down movement of the slider 24 is improved, the lateral force of the slider 24 and the electric push rod 23 tilting forward is reduced, and the service life of the device is extended.

[0042] The pitch adjustment frame 30 includes a horizontally arranged mounting block 1 31, a mounting block 2 35 is fixed to the front end surface of the mounting block 1 31, a pressure plate 36 which is clearance-matched with the mounting block 2 35 is fixed to the front end surface of the mounting block 2 35, the side walls of the mounting block 2 35 and the pressure plate 36 which are close to each other are both arc-shaped structures, a VESA adapter plate 37 is pressed and slidably connected between the mounting block 2 35 and the pressure plate 36, two limit blocks 38 are fixed to the rear end surface of the top of the VESA adapter plate 37, the side walls of the two limit blocks 38 which are close to each other are both provided with arc-shaped grooves, a mounting groove is provided at the top of the mounting block 1 31, an electric push rod 2 33 which is inclined upward is fixed in the mounting groove, a ball head 34 is fixed to the output end of the electric push rod 2 33, the ball head 34 is rotatably connected in the ball groove formed by the two arc-shaped grooves, and a top cover 39 located above the electric push rod 2 33 is fixed to the top of the mounting block 1 31.

[0043] It should be noted here that: the output end of the electric push rod 2 33 moves forward or backward, so that the ball head 34 drives the limit block 38 and the VESA adapter plate 37 to move synchronously, and the pitch angle of the display mounted on the VESA adapter plate 37 is adjusted. The top cover 39 protects the electric push rod 2 33 to prevent the electric push rod 2 33 from being damaged by collision.

[0044] Working principle:

[0045] 1. The output shaft 41 of the driving motor is rotated by controlling the switch on the top of the supporting base 11. Here, the driving motor is preferably a worm gear motor, so as to realize the forward and reverse rotation of the shaft 41, so that the lower cover plate 17, the upper cover plate 16, the fixing plate 60, the supporting lifting column 20, the pitch adjustment frame 30 and the display screen installed on the pitch adjustment frame 30 are deflected left and right;

[0046] Second, the output end of the electric push rod 23 is driven by the control switch on the top of the support seat 11 to drive the slider 24 to move in the vertical direction, so as to adjust the height of the pitch adjustment frame 30 and the display screen on the pitch adjustment frame 30 in the vertical direction;

[0047] 3. By moving the output end of the electric push rod 2 33 , the ball head 34 drives the limit block 38 and the VESA adapter plate 37 to move synchronously, so as to adjust the pitch angle of the display mounted on the VESA adapter plate 37 ;

[0048] 4. One or more of a camera, a face recognition module, and an environment detection module are installed on the support base 11 or the support lifting column 20 to achieve multifunctional expansion of the device.

[0049] It should be noted here that the power supply line at the output end of the top of the circuit board 42 passes through the front end surface of the supporting lifting column 20 to supply power to the electric push rod 33. When the display screen deflects and the slider 24 moves up and down, the power supply line has a redundant amount of bending and will not be entangled. The redundant amount is set according to the stroke of the slider 24 to ensure that the power supply line continues to supply power stably during the rotation process without being entangled, effectively reducing the safety hazards when the device is used and ensuring the stable operation of the equipment.

Claims

1. A three-axis multi-directional electric intelligent display desktop mechanical arm, comprising a rotating base (10), a supporting lifting column (20) fixed on the top of the rotating base (10), and a pitch adjustment frame (30) installed on the top of the front end surface of the supporting lifting column (20), characterized in that: The rotating base (10) comprises a supporting base (11), a driving motor is embedded in the bottom of the supporting base (11), a circular recessed groove (50) is provided on the top of the supporting base (11), an annular frame (12) is fixed in the recessed groove (50), a bearing seat (13) is fixed on the top of the annular frame (12), the top and bottom of the bearing seat (13) are respectively rotatably connected with an upper cover plate (16) and a lower cover plate (17) that deflect synchronously, a rotating shaft (41) at the output end of the driving motor passes through the top of the supporting base (11) and coincides with the axis line of the recessed groove (50), and the top of the upper cover plate (16) is fixed by a fixing plate (60) and screws. A supporting lifting column (20) is fixedly installed; a second circuit board (42) is fixed at the bottom of the lower cover plate (17); a first circuit board (40) is arranged horizontally and fixed in the annular frame (12) below the second circuit board (42); four concentric circular copper foil circuit boards corresponding to four copper contacts of the second circuit board (42) are arranged on the top of the first circuit board (40); the four copper contacts at the bottom of the second circuit board (42) are in contact with the four concentric circular copper foil circuit boards; a power supply line at the output end of the top of the second circuit board (42) passes through the lower cover plate (17), the upper cover plate (16) and the fixing plate (60) in sequence and extends into the supporting lifting column (20).

2. The three-axis multi-directional electric intelligent display desktop robot arm according to claim 1, characterized in that: An annular partition is provided in the middle of the bearing seat (13), and a silent bearing 1 (15) and a silent bearing 2 (14) are respectively embedded in the top and bottom of the partition. An annular protrusion is provided at the bottom of the upper cover plate (16), and the annular protrusion is clamped on the inner arc wall of the silent bearing 1 (15). The upper cover plate (16) and the lower cover plate (17) are fixed by bolts, and an aperture for the power supply line to pass through is reserved at the center of the upper cover plate (16) and the center of the fixing plate (60).

3. The three-axis multi-directional electric intelligent display desktop robot arm according to claim 1, characterized in that: The top of the bearing seat (13) is provided with four evenly distributed steel balls (18), the bottom of the upper cover plate (16) is provided with a recessed circular ring-shaped guide rail located above the steel balls (18), and the top of the steel balls (18) is located in the guide rail.

4. The three-axis multi-directional electric intelligent display desktop robot arm according to claim 1, characterized in that: The supporting lifting column (20) comprises a main frame (21) fixed on the top of a fixing plate (60) and arranged vertically, a sliding channel (22) is arranged on the front end surface of the main frame (21), a baffle (25) which is fixed at the sliding channel (22) and is fitted with a clearance therewith, a vertically arranged electric push rod (23) is fixed in the main frame (21), a slider (24) is fixed at the output end of the electric push rod (23), both ends of the bottom of the slider (24) are penetrated and slidably connected with a guide rod fixed in the main frame (21), a connecting block (32) is fixed on the front end surface of the slider (24), the top cross section of the connecting block (32) is a "ㄇ"-shaped structure, and both ends of the connecting block (32) pass through the gap between the sliding channel (22) and the baffle (25) and are fixedly connected to the pitch adjustment frame (30).

5. The three-axis multi-directional electric intelligent display desktop mechanical arm as claimed in claim 4, characterized in that: Both ends of the bottom of the slider (24) are penetrated and fixedly connected with linear bearings, the linear bearings are sleeved on the outer wall of the guide rod and slidably connected thereto, the slider (24) also includes two upper and lower mounting plates, and a slider hole for fixing the output end of the electric push rod (23) is provided at the center of the bottom of the slider (24).

6. The three-axis multi-directional electric intelligent display desktop mechanical arm according to claim 1, characterized in that: The pitch adjustment frame (30) comprises a horizontally arranged mounting block 1 (31), a mounting block 2 (35) being fixed to the front end surface of the mounting block 1 (31), a pressing plate (36) being fixed to the front end surface of the mounting block 2 (35) and being gap-matched therewith, the side walls of the mounting block 2 (35) and the pressing plate (36) being close to each other are both arc-shaped structures, a VESA adapter plate (37) is pressed and slidably connected between the mounting block 2 (35) and the pressing plate (36), and the rear end of the top of the VESA adapter plate (37) is Two limit blocks (38) are fixed on the end surface, and arc grooves are provided on the side walls of the two limit blocks (38) close to each other. A mounting groove is provided on the top of the mounting block 1 (31), and an electric push rod 2 (33) arranged obliquely upward is fixed in the mounting groove. A ball head (34) is fixed on the output end of the electric push rod 2 (33), and the ball head (34) is rotatably connected in the ball groove formed by the two arc grooves. A top cover (39) located above the electric push rod 2 (33) is fixed on the top of the mounting block 1 (31).

7. The three-axis multi-directional electric intelligent display desktop mechanical arm according to claim 1, characterized in that: A control switch is installed on the support base (11), and one or more of a camera, a face recognition module, and an environment detection module are installed on the support base (11) or the support lifting column (20).

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