A synchronously adjustable twin-column lift

Abstract

This invention discloses a synchronously adjustable dual-post lift, comprising a fixed post assembly and a movable post assembly. Each of the fixed and movable post assemblies is equipped with a height adjustment component, and each height adjustment component is equipped with an adjustable scissor-type support arm assembly. It also includes a synchronous lifting control mechanism and a synchronous angle control mechanism. Regardless of the distance between the two posts, the included angle of the scissor-type lifting arms on both sides can be adjusted synchronously and consistently for more accurate alignment with the vehicle chassis. The adjustment of the distance between the two posts, the height of the lifting arms, and the angle of the scissor-type lifting arms are all achieved using a screw and threaded sleeve mechanism, resulting in more precise adjustments, better stability, prevention of sudden drops, and improved safety.

Description

Technical Field

[0001] This invention relates to a two-post lift, and more particularly to a synchronously adjustable two-post lift. Background Technology

[0002] A car lift is an automotive maintenance device used in the automotive repair industry to lift vehicles. Car lifts play a crucial role in automotive repair and maintenance; whether it's a major overhaul or minor repair, a car lift is indispensable for raising the vehicle to a certain height for convenient subsequent repairs and maintenance. However, traditional lifts cannot freely adjust the gap between the two pillars, reducing flexibility when lifting vehicles with different widths. Furthermore, when not in use, the pillars cannot be easily closed to save space. Additionally, the angles between the four support arms formed by the two sets of scissor lifts cannot be adjusted synchronously, requiring mechanics to adjust them one by one, reducing work efficiency. Therefore, to address these issues, a design is needed that allows for free adjustment of the gap between the two pillars while simultaneously enabling synchronous adjustment of the angles and lifting movements of the two scissor lift support arms at any position, achieving symmetrical adjustment.

[0003] Therefore, existing two-post lifts need further improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a synchronously adjustable dual-post lift that can achieve synchronous adjustment of the included angle and synchronous lifting action of the two scissor arms at any dual-post position, so as to achieve symmetrical adjustment.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A synchronously adjustable dual-post lift includes a fixed post assembly and a movable post assembly. Each of the fixed post assembly and the movable post assembly is provided with a height adjustment assembly, and each height adjustment assembly is provided with an adjustable scissor-type support arm assembly. It also includes a synchronous lifting control mechanism and a synchronous angle control mechanism.

[0007] A synchronous lifting control mechanism is connected between the fixed column assembly and the movable column assembly to synchronously control the two height adjustment components. Even when the distance between the fixed column assembly and the movable column assembly changes, the synchronous control of the two height adjustment components is still maintained.

[0008] A synchronization angle control mechanism is connected between the two adjustable scissor arm assemblies. When the height position and left-right spacing position of the two adjustable scissor arm assemblies change, the included angle can still be kept synchronized.

[0009] Furthermore, the fixing column assembly includes an intermediate base, and a fixing column body is provided at one end of the intermediate base;

[0010] The movable column assembly includes a transverse track and a transverse guide groove disposed on the intermediate base. A first adjusting screw is disposed in the transverse guide groove. A first servo motor is disposed at one end of the transverse guide groove. The output end of the first servo motor is fixedly connected to the end of the first adjusting screw. A movable column body is disposed on the transverse track. A first threaded sleeve is disposed at the bottom of the movable column body. The first adjusting screw is inserted into the first threaded sleeve and threadedly connected.

[0011] Furthermore, the height adjustment assembly includes two vertical guide shafts spaced apart front to back, a vertically arranged second adjustment screw, and a lifting slider;

[0012] The lifting slider has two vertical guide holes spaced apart, and the vertical guide shaft is inserted into the vertical guide holes. The fixed column assembly and the movable column assembly are each provided with a vertical screw mounting seat. The second adjusting screw is rotatably mounted on a corresponding vertical screw mounting seat. The lifting slider has a vertical screw hole, and the second adjusting screw is inserted into the vertical screw hole and threaded.

[0013] Furthermore, the adjustable scissor-type support arm assembly includes two pivot holes symmetrically arranged on the lifting slider, a pivot body is provided in the pivot hole, a symmetrical transmission gear is provided at the end of the pivot body, the two symmetrical transmission gears mesh with each other for transmission, an adjustable telescopic arm is provided on the pivot body, and a support part is provided at the outer end of the adjustable telescopic arm.

[0014] Furthermore, a support plate is provided at the front and rear positions of the fixed column assembly and the movable column assembly, and a guide slope is provided at the outer end of the support plate.

[0015] Furthermore, the synchronous lifting control mechanism includes a straight gear mounting groove disposed at the lower end of the fixed column body and the movable column body, a control rack movably mounted in the straight gear mounting groove, a transmission gear disposed at the lower end of the second adjusting screw, the control rack meshing with a corresponding transmission gear, a second servo motor disposed in one of the support plates, a third adjusting screw longitudinally disposed at the output end of the second servo motor, longitudinal guide shafts fixedly connected to the support plate disposed on both sides of the third adjusting screw, and a transverse adjusting rod, a third threaded sleeve disposed in the middle of the transverse adjusting rod, longitudinal guide sleeves disposed on both sides of the transverse adjusting rod, the third adjusting screw being inserted into the third threaded sleeve and threadedly connected, the longitudinal guide shaft being inserted into the corresponding longitudinal guide sleeve, a longitudinal control transverse shaft disposed on the transverse adjusting rod, a longitudinal control bushing disposed at the outer end of the control rack, and the longitudinal control bushing being sleeved on the longitudinal control transverse shaft.

[0016] Furthermore, the two control racks are respectively disposed on the left side of the meshing transmission gear;

[0017] When the longitudinal control axis moves forward or backward, the longitudinal control bushing moves forward or backward accordingly.

[0018] When the longitudinal control bushing moves left or right, it does not affect the movement of the longitudinal control horizontal axis.

[0019] Furthermore, the synchronization angle control mechanism includes a longitudinal movement control mechanism mounted on another support plate. A transverse synchronization plate is mounted on the longitudinal movement control mechanism. The transverse synchronization plate has a transverse straight slot. Two rotating shafts near the transverse straight slot each have a hexagonal through hole. A hexagonal control post is inserted into each hexagonal through hole. A rotor seat is mounted at the upper end of both the fixed and movable column bodies. A rotor mounting part is mounted at the upper end of the hexagonal control post. The rotor mounting part is rotatably mounted within the rotor seat and restricts the axial movement of the hexagonal control post. The hexagonal control post and the hexagonal through hole are fitted together. When the hexagonal through hole rotates, the hexagonal control post rotates accordingly. A swing rod is mounted at the lower end of the hexagonal control post. A drive shaft is mounted at the outer end of the swing rod and moves within the transverse straight slot. The swing rods on both sides are symmetrically arranged.

[0020] Furthermore, the longitudinal movement control mechanism includes two fourth guide shafts disposed at the bottom of another support plate, a fourth servo motor disposed between the two fourth guide shafts, a fourth adjusting screw disposed at the output end of the fourth servo motor, the fourth servo motor being fixed to the bottom of the support plate, a fourth threaded sleeve and two fourth guide sleeves disposed on the transverse synchronization plate, the fourth adjusting screw being inserted into the fourth threaded sleeve and threadedly connected, and the fourth guide shaft being correspondingly inserted into the fourth guide sleeve.

[0021] Furthermore, a control component is provided on the fixed column assembly, and the control component is communicatively connected to the first servo motor, the second servo motor, and the fourth servo motor;

[0022] The first servo motor is used to control the movable column assembly, causing the distance between the movable column assembly and the fixed column assembly to change;

[0023] The second servo motor is used to control the height position of the two adjustable scissor arm assemblies;

[0024] The fourth servo motor is used to control the included angle between the two adjustable scissor arm assemblies.

[0025] In summary, the advantages of this invention over the prior art are:

[0026] This invention addresses the shortcomings of existing two-post lifts. Through its structural design, it offers the following advantages: 1. The spacing between the two posts can be freely adjusted to meet current lifting needs, allowing for flexible adjustment of the lifting width and accommodating more vehicles. It also allows for closer proximity, significantly saving space when not in use. 2. The lifting arms on both sides employ a scissor-type adjustment structure, enabling symmetrical adjustment of the two support rods. This reduces errors when securing the vehicle's underside, resulting in more accurate lifting and reducing manual adjustment labor. 3. Regardless of the spacing between the two posts, the angle between the scissor-type lifting arms on both sides can be adjusted synchronously and consistently for more accurate alignment with the vehicle chassis. 4. The adjustment of the post spacing, lifting arm height, and scissor-type lifting arm angle utilizes a screw-and-sleeve combination, resulting in more precise adjustments, better stability, prevention of sudden drops, and improved safety. Attached Figure Description

[0027] Figure 1 This is the front view of the present invention;

[0028] Figure 2 This is a top view of the present invention;

[0029] Figure 3 This is a bottom view of the first state of the present invention;

[0030] Figure 4 This is a bottom view of the second state of the present invention;

[0031] Figure 5 This is a first-state perspective view of the present invention;

[0032] Figure 6 This is a perspective view of the second state of the present invention;

[0033] Figure 7 This is the left view of the present invention;

[0034] Figure 8 for Figure 7 Sectional view along line BB;

[0035] Figure 9 for Figure 8 Sectional view along line CC;

[0036] Figure 10 for Figure 9 A magnified view of a portion at point D;

[0037] Figure 11 for Figure 7 Sectional view along line AA;

[0038] Figure 12 This is a bottom view of the present invention;

[0039] Figure 13 This is one of the exploded views of the present invention;

[0040] Figure 14 This is the second exploded view of the present invention;

[0041] Figure 15 This is the third exploded view of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1-15 The present invention provides a synchronously adjustable dual-column lift, including a fixed column assembly 1 and a movable column assembly 2, each of the fixed column assembly 1 and the movable column assembly 2 being provided with a height adjustment assembly 4, and the height adjustment assembly 4 being provided with an adjustable scissor-type support arm assembly 3; it also includes a synchronous lifting control mechanism 5 and a synchronous angle control mechanism 6.

[0044] The synchronous lifting control mechanism 5 is connected between the fixed column assembly 1 and the movable column assembly 2 to synchronously control the two height adjustment components 4. When the distance between the fixed column assembly 1 and the movable column assembly 2 changes, the synchronous control of the two height adjustment components 4 is still maintained.

[0045] The synchronous angle control mechanism 6 is connected between the two adjustable scissor arm assemblies 3. When the height position and left and right interval position of the two adjustable scissor arm assemblies 3 change, the synchronous control of the included angle can still be maintained.

[0046] The distance between the fixed column assembly 1 and the movable column assembly 2 can be freely adjusted according to the vehicle being lifted, so as to accommodate vehicles of more sizes, regardless of size.

[0047] The adjustable scissor support arm assembly 3 can freely adjust the included angle, so that the outer support part is in different width positions, which can be used to adapt to and fine-tune the support position.

[0048] The height adjustment component 4 can adjust the height position of the adjustable scissor arm component 3, thereby achieving the purpose of lifting.

[0049] The synchronous lifting control mechanism 5 enables the two adjustable scissor arm assemblies 3 to lift synchronously regardless of their spacing, ensuring synchronous lifting on both sides, preventing vehicle tilting, and reducing operational complexity.

[0050] The synchronous angle control mechanism 6 is used to adjust the included angle of the two adjustable scissor support arm assemblies 3 to be synchronous and adjustable at any height and spacing position; this ensures that the positions of the four support points on both sides are symmetrical front, back, left and right, accurately supports the vehicle chassis position, and reduces the complexity of operation.

[0051] The fixed column assembly 1 of the present invention includes an intermediate base 101, and a fixed column body 102 is provided at one end of the intermediate base 101;

[0052] The movable column assembly 2 includes a transverse rail 201 and a transverse guide groove 202 disposed on the intermediate base 101. A first adjusting screw 203 is disposed in the transverse guide groove 202. A first servo motor 204 is disposed at one end of the transverse guide groove 202. The output end of the first servo motor 204 is fixedly connected to the end of the first adjusting screw 203. A movable column body 205 is disposed on the transverse rail 201. A first threaded sleeve 206 is disposed at the bottom of the movable column body 205. The first adjusting screw 203 is inserted into the first threaded sleeve 206 and threadedly connected.

[0053] The height adjustment component 4 of the present invention includes two vertical guide shafts 401 spaced apart, a vertically arranged second adjustment screw 402, and a lifting slider 403;

[0054] The lifting slider 403 has two vertical guide holes 404 spaced apart, and the vertical guide shaft 401 is inserted into the vertical guide holes 404. The fixed column assembly 1 and the movable column assembly 2 are each provided with a vertical screw mounting seat 405. The second adjusting screw 402 is rotatably mounted on a corresponding vertical screw mounting seat 405. The lifting slider 403 is provided with a vertical screw hole 406, and the second adjusting screw 402 is inserted into the vertical screw hole 406 and threadedly connected.

[0055] The adjustable scissor-type support arm assembly 3 of the present invention includes two pivot holes 302 symmetrically arranged on the lifting slider 403. A pivot body 303 is provided in the pivot hole 302. A symmetrical transmission gear 305 is provided at the end of the pivot body 303. The two symmetrical transmission gears 305 mesh with each other for transmission. An adjustable telescopic arm 306 is provided on the pivot body 303. A support part 307 is provided at the outer end of the adjustable telescopic arm 306.

[0056] The present invention further provides a support plate 100 at the front and rear positions of the fixed column assembly 1 and the movable column assembly 2, and the outer end of the support plate 100 is provided with a guide slope 200.

[0057] The synchronous lifting control mechanism 5 of the present invention includes a straight tooth mounting groove 501 disposed at the lower end of the fixed column body 102 and the movable column body 205. A control rack 502 is movably mounted in the straight tooth mounting groove 501. A transmission gear 503 is disposed at the lower end of the second adjusting screw 402. The control rack 502 meshes with a corresponding transmission gear 503. A second servo motor 504 is disposed in one of the support plates 100. A third adjusting screw 505 is longitudinally disposed at the output end of the second servo motor 504. The third adjusting screw 505 is provided with a mounting plate 100 on both sides. The longitudinal guide shaft 506, which is fixedly connected to the 00, also includes a transverse adjusting rod 507. A third threaded sleeve 508 is provided in the middle of the transverse adjusting rod 507, and longitudinal guide sleeves 509 are provided on both sides of the transverse adjusting rod 507. The third adjusting screw 505 is inserted into the third threaded sleeve 508 and threadedly connected. The longitudinal guide shaft 506 is inserted into the corresponding longitudinal guide sleeve 509. A longitudinal control transverse shaft 510 is provided on the transverse adjusting rod 507, and a longitudinal control bushing 511 is provided at the outer end of the control rack 502. The longitudinal control bushing 511 is sleeved on the longitudinal control transverse shaft 510.

[0058] When the longitudinal control axis 510 moves longitudinally, it drives the longitudinal control sleeve 511 to move longitudinally as well. At this time, the longitudinal control sleeve 511 pushes the control rack 502 to move, and the control rack 502 drives the transmission gear 503 to rotate. The rotation of the transmission gear 503 drives the second adjusting screw 402 to rotate. The rotation of the second adjusting screw 402 engages with the vertical screw hole 406 for transmission. At this time, the lifting slider 403 adjusts its up and down position.

[0059] The longitudinal control bushing 511 is sleeved outside the longitudinal control horizontal shaft 510. At this time, when the longitudinal control bushing 511 can follow the movable column assembly 2 to move left and right, it does not affect the forward and backward pushing of the longitudinal control horizontal shaft 510.

[0060] In this invention, the two control racks 502 are respectively disposed on the left side of the transmission gear 503 in the meshing transmission;

[0061] When the longitudinal control axis 510 moves back and forth, the longitudinal control sleeve 511 is controlled to move back and forth accordingly.

[0062] When the longitudinal control sleeve 511 moves left or right, it does not affect the movement of the longitudinal control horizontal axis 510.

[0063] The synchronization angle control mechanism 6 of the present invention includes a longitudinal movement control mechanism 601 disposed on another support plate 100. A transverse synchronization plate 602 is disposed on the longitudinal movement control mechanism 601. A transverse straight slot 603 is disposed on the transverse synchronization plate 602. A hexagonal through hole 604 is disposed on each of the two rotating shafts 303 near the transverse straight slot 603. A hexagonal control post 605 is inserted into the hexagonal through hole 604. A rotor seat 606 is disposed on the upper end of the fixed column body 102 and the movable column body 205. The hexagonal control post 605 The upper end is provided with a rotor mounting part 607, which is rotatably mounted in the rotor seat 606 and restricts the axial movement of the hexagonal control post 605; the hexagonal control post 605 and the hexagonal through hole 604 are fitted together, and when the hexagonal through hole 604 rotates, the hexagonal control post 605 is controlled to rotate accordingly; the lower end of the hexagonal control post 605 is provided with a swing rod 609, and the outer end of the swing rod 609 is provided with a drive shaft 608, which moves through the transverse straight slot 603; the swing rods 609 on both sides are symmetrically arranged;

[0064] The cooperation between the hexagonal control post 605 and the hexagonal through hole 604 enables the hexagonal control post 605 to rotate synchronously with the symmetrical transmission gear 305 when it rotates. The hexagonal through hole 604 can be adjusted to any height position along the axial direction of the hexagonal control post 605 without affecting each other. When the hexagonal control post 605 rotates, the symmetrical transmission gear 305 also rotates accordingly.

[0065] Meanwhile, when the bottom horizontal straight slot 603 is adjusted in the front and back position, it will control the drive shaft 608 to rotate, drive the swing rod 609 to rotate, and the rotation of the swing rod 609 will drive the hexagonal control column 605 to rotate.

[0066] The drive shaft 608 can follow the movable column assembly 2 to move left and right within the transverse straight slot 603, but does not affect the control of the forward and backward movement of the transverse straight slot 603.

[0067] In other words, the four symmetrical transmission gears 305 can rotate symmetrically and synchronously at any left or right or height position.

[0068] The longitudinal movement control mechanism 601 of the present invention includes two fourth guide shafts 6011 disposed at the bottom of another support plate 100, a fourth servo motor 6012 disposed between the two fourth guide shafts 6011, a fourth adjusting screw 6013 disposed at the output end of the fourth servo motor 6012, the fourth servo motor 6012 being fixed at the bottom of the support plate 100, a fourth threaded sleeve 6014 and two fourth guide sleeves 6015 disposed on the transverse synchronization plate 602, the fourth adjusting screw 6013 being inserted into the fourth threaded sleeve 6014 and threadedly connected, and the fourth guide shafts 6011 being correspondingly inserted into the fourth guide sleeves 6015.

[0069] The fixed column assembly 1 of the present invention is provided with a control component 1000, which is communicatively connected to the first servo motor 204, the second servo motor 504 and the fourth servo motor 6012.

[0070] The first servo motor 204 is used to control the movable column assembly 2, so that the distance between the movable column assembly 2 and the fixed column assembly 1 changes;

[0071] The second servo motor 504 is used to control the height position of the two adjustable scissor arm assemblies 3;

[0072] The fourth servo motor 6012 is used to control the included angle between the two adjustable scissor arm assemblies 3.

[0073] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A synchronously adjustable dual-column lift, characterized in that: It includes a fixed column assembly (1) and a movable column assembly (2), each of which is provided with a height adjustment assembly (4), and the height adjustment assembly (4) is provided with an adjustable scissor-type support arm assembly (3); it also includes a synchronous lifting control mechanism (5) and a synchronous angle control mechanism (6). The synchronous lifting control mechanism (5) is connected between the fixed column assembly (1) and the movable column assembly (2) to synchronously control the two height adjustment components (4). When the distance between the fixed column assembly (1) and the movable column assembly (2) changes, the synchronous control of the two height adjustment components (4) is still maintained. The synchronous angle control mechanism (6) is connected between the two adjustable scissor support arm assemblies (3). When the height position and left and right interval position of the two adjustable scissor support arm assemblies (3) change, the synchronous control of the included angle can still be maintained. The fixed column assembly (1) includes an intermediate base (101), and a fixed column body (102) is provided at one end of the intermediate base (101). The movable column assembly (2) includes a transverse rail (201) and a transverse guide groove (202) disposed on the intermediate base (101). A first adjusting screw (203) is disposed in the transverse guide groove (202). A first servo motor (204) is disposed at one end of the transverse guide groove (202). The output end of the first servo motor (204) is fixedly connected to the end of the first adjusting screw (203). A movable column body (205) is disposed on the transverse rail (201). A first threaded sleeve (206) is disposed at the bottom of the movable column body (205). The first adjusting screw (203) is inserted into the first threaded sleeve (206) and threadedly connected. The height adjustment component (4) includes two vertical guide shafts (401) spaced apart front and rear, a second adjustment screw (402) arranged vertically, and a lifting slider (403). The lifting slider (403) is provided with two vertical guide holes (404) spaced back and forth. The vertical guide shaft (401) is inserted into the vertical guide holes (404). The fixed column assembly (1) and the movable column assembly (2) are each provided with a vertical screw mounting seat (405). The second adjusting screw (402) is rotatably mounted on a corresponding vertical screw mounting seat (405). The lifting slider (403) is provided with a vertical screw hole (406). The second adjusting screw (402) is inserted into the vertical screw hole (406) and threaded. A support plate (100) is also provided at the front and rear positions of the fixed column assembly (1) and the movable column assembly (2), and a guide slope (200) is provided at the outer end of the support plate (100). The synchronous lifting control mechanism (5) includes a straight gear mounting groove (501) located at the lower ends of the fixed column body (102) and the movable column body (205). A control rack (502) is movably mounted in the straight gear mounting groove (501). A transmission gear (503) is provided at the lower end of the second adjusting screw (402). The control rack (502) meshes with a corresponding transmission gear (503). A second servo motor (504) is provided in one of the support plates (100). A third adjusting screw (505) is longitudinally provided at the output end of the second servo motor (504). The third adjusting screw (505) has a connection point on both sides with the support plate (100). The longitudinal guide shaft (506) is fixedly connected to the transverse guide shaft (507), and a transverse adjusting rod (507) is provided with a third threaded sleeve (508) in the middle of the transverse adjusting rod (507). A longitudinal guide sleeve (509) is provided on each side of the transverse adjusting rod (507). The third adjusting screw (505) is inserted into the third threaded sleeve (508) and threadedly connected. The longitudinal guide shaft (506) is inserted into the corresponding longitudinal guide sleeve (509). A longitudinal control transverse shaft (510) is provided on the transverse adjusting rod (507). A longitudinal control bushing (511) is provided at the outer end of the control rack (502). The longitudinal control bushing (511) is sleeved on the longitudinal control transverse shaft (510).

2. The synchronously adjustable double-column lift according to claim 1, characterized in that: The adjustable scissor-type support arm assembly (3) includes two pivot holes (302) symmetrically arranged on the lifting slider (403). A pivot body (303) is provided in the pivot hole (302). A symmetrical transmission gear (305) is provided at the end of the pivot body (303). The two symmetrical transmission gears (305) mesh with each other for transmission. An adjustable telescopic arm (306) is provided on the pivot body (303). A support part (307) is provided at the outer end of the adjustable telescopic arm (306).

3. The synchronously adjustable double-column lift according to claim 2, characterized in that: The two control racks (502) are respectively disposed on the left side of the transmission gear (503) in the meshing transmission; When the longitudinal control axis (510) moves back and forth, the longitudinal control sleeve (511) moves back and forth accordingly. When the longitudinal control bushing (511) moves left or right, it does not affect the movement of the longitudinal control horizontal axis (510).

4. A synchronously adjustable dual-column lift according to claim 3, characterized in that: The synchronization angle control mechanism (6) includes a longitudinal movement control mechanism (601) mounted on another support plate (100). A transverse synchronization plate (602) is mounted on the longitudinal movement control mechanism (601). A transverse straight slot (603) is mounted on the transverse synchronization plate (602). Two rotating shafts (303) near the transverse straight slot (603) are each provided with a hexagonal through hole (604). A hexagonal control post (605) is inserted into the hexagonal through hole (604). A rotor seat (606) is mounted on the upper end of the fixed column body (102) and the movable column body (205). The hexagonal control post (605) The upper end is provided with a rotor mounting part (607), which is rotatably mounted in the rotor seat (606) and restricts the axial movement of the hexagonal control column (605); the hexagonal control column (605) and the hexagonal through hole (604) are fitted together and installed. When the hexagonal through hole (604) rotates, the hexagonal control column (605) is controlled to rotate accordingly. The lower end of the hexagonal control column (605) is provided with a swing rod (609), and the outer end of the swing rod (609) is provided with a drive shaft (608). The drive shaft (608) moves through the transverse straight slot (603); the swing rods (609) on both sides are symmetrically arranged.

5. A synchronously adjustable dual-column lift according to claim 4, characterized in that: The longitudinal movement control mechanism (601) includes two fourth guide shafts (6011) disposed at the bottom of another support plate (100), a fourth servo motor (6012) disposed between the two fourth guide shafts (6011), a fourth adjusting screw (6013) disposed at the output end of the fourth servo motor (6012), the fourth servo motor (6012) being fixed at the bottom of the support plate (100), a fourth threaded sleeve (6014) and two fourth guide sleeves (6015) disposed on the transverse synchronization plate (602), the fourth adjusting screw (6013) being inserted into the fourth threaded sleeve (6014) and threadedly connected, and the fourth guide shaft (6011) being correspondingly inserted into the fourth guide sleeve (6015).

6. A synchronously adjustable dual-column lift according to claim 5, characterized in that: The fixed column assembly (1) is provided with a control component (1000), which is communicatively connected to the first servo motor (204), the second servo motor (504) and the fourth servo motor (6012). The first servo motor (204) is used to control the movable column assembly (2) so that the distance between the movable column assembly (2) and the fixed column assembly (1) changes. The second servo motor (504) is used to control the height position of the two adjustable scissor arm assemblies (3); The fourth servo motor (6012) is used to control the angle between the two adjustable scissor arm assemblies (3).

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