Lifting workbench

Abstract

The utility model discloses a lifting workbench which comprises a working platform, a base and a lifting assembly, the lifting assembly comprises at least one set of lifting arms, each set of lifting arms comprises a first supporting arm and a second supporting arm, the middles of the first supporting arm and the second supporting arm are hinged to form an X shape, and at least one end of each set of lifting arms is provided with a synchronous module. The synchronization module comprises a hollow base, a synchronization mechanism arranged in the base and sliding rails arranged on the base, and the end of the first supporting arm and the end of the second supporting arm are slidably connected with the base through the sliding rails. The synchronizing mechanism is used for enabling the first end of the first supporting arm and the first end of the second supporting arm to synchronously move in the opposite directions or synchronously move in the opposite directions in the length direction of the sliding rail, and / or the synchronizing mechanism is used for enabling the second end of the first supporting arm and the second end of the second supporting arm to synchronously move in the opposite directions or synchronously move in the opposite directions in the length direction of the sliding rail. According to the lifting workbench, the synchronizing mechanism is arranged in the base, so that the lifting workbench is high in safety performance, not prone to damage and high in lifting stability.

Description

Technical Field

[0001] The present application relates to the technical field of computer carrying equipment, and specifically to a lifting workbench. Background Art

[0002] With the continuous development of society, flat panel displays, tablet computers, etc. are becoming more and more popular in ordinary households, and the corresponding brackets have emerged. The lifting workbench for carrying tablet computers in the related technology, also known as lifting work tables, or desktop computer brackets, etc., is generally placed on a desktop or tabletop, and can be raised and lowered to adjust the height when in use to meet the needs of users for healthy working methods such as standing or alternating between standing and sitting.

[0003] A lifting workbench of related technology, such as the lifting workbench disclosed in the patent application with publication number CN117502808A previously applied by the applicant of this case, has a structure including a working platform, a base, and at least one group of lifting arms, each group of lifting arms including at least two support arms hinged in the middle to form an X-shape; the upper ends of the two support arms are respectively provided with first sliding members slidably connected to the working platform, and the lower ends of the two support arms are respectively provided with second sliding members slidably connected to the base; a first synchronization component located at the bottom of the working platform and protruding downward is connected between the two first sliding members, and a second synchronization component located on the base is connected between the two second sliding members; the synchronization component is transmitted by two racks meshing with the rotating gear at the same time, so that the movement between the two first sliding members and between the two second sliding members is kept synchronized.

[0004] During actual use, the inventor discovered that the lifting work platform of the above-mentioned related technology has the following defects: the lifting work platform of the related technology has synchronization mechanisms installed on the bottom of the working platform and the base are exposed outward. When adjusting the height of the working platform to link the movement of the synchronization mechanism, there is not only a safety hazard of pinching hands, but also it is easy to be damaged by accidental contact or accidental collision; furthermore, the synchronization mechanism has a large span and poor coordination stability, which causes the working platform to shake when the height is adjusted, and the user experience is poor. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide a lifting workbench with high safety performance, not easy to be damaged, and high lifting stability.

[0006] The technical solution of the present application is to provide a lifting workbench with the following structure:

[0007] Work platform;

[0008] A base that sits on an existing table or countertop; and

[0009] A lifting assembly connected to the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly comprising at least one set of lifting arms, each set of lifting arms comprising two arms hinged in the middle in an X shape: a first arm and a second arm, and the first end of the first arm and the first end of the second arm are respectively slidably connected to the working platform, and the second end of the first arm and the second end of the second arm are respectively slidably connected to the base;

[0010] A synchronization module is provided between the first end of the first arm and the first end of the second arm of each group of the lifting arms, and / or a synchronization module is provided between the second end of the first arm and the second end of the second arm; the synchronization module comprises a hollow base, a synchronization mechanism provided in the base, and a slide rail provided on the base; and

[0011] The first end of the first support arm and the first end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the first end of the first support arm and the first end of the second support arm move synchronously toward each other or move synchronously away from each other along the length direction of the slide rail; and / or

[0012] The second end of the first arm and the second end of the second arm of each group of lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the second end of the first arm and the second end of the second arm move toward each other or move away from each other synchronously along the length direction of the slide rail.

[0013] In some embodiments, the synchronization mechanism includes a first sliding member, a second sliding member and a synchronization gear, the first sliding member and the second sliding member move toward or away from each other along the length direction, and the first sliding member is provided with a first tooth portion along the length direction, and the second sliding member is provided with a second tooth portion along the length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the base, and the synchronization gear is respectively engaged with the first tooth portion and the second tooth portion; the first sliding member and the second sliding member are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first sliding member and the second sliding member are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

[0014] In some embodiments, the axial direction of the synchronous gear shaft is parallel to the horizontal plane where the working platform is located.

[0015] In some embodiments, the lifting assembly includes two groups of lifting arms, and the lifting workbench also includes at least one synchronization rod, which is arranged between the two groups of lifting arms, and the two ends of the synchronization rod are respectively connected to the synchronization gears of the synchronization mechanism of the two groups of lifting arms.

[0016] In some embodiments, a plug-in hole for the synchronization rod to be inserted is provided at the center of the synchronization gear; both ends of the synchronization rod are respectively inserted into the plug-in holes of the synchronization gears of the two groups of lifting arms and are circumferentially limited with the plug-in holes.

[0017] In some embodiments, the synchronization module is disposed between the first end of the first arm and the first end of the second arm of each group of the lifting arms and between the second end of the first arm and the second end of the second arm of each group of the lifting arms.

[0018] In some embodiments, the lifting assembly includes two groups of lifting arms, and the lifting work platform also includes a power element, which is connected between the work platform and the base and is located on a side close to one group of the lifting arms, and is used to provide lifting force for the work platform to rise.

[0019] In some embodiments, the first end of the power element is rotatably connected to the working platform or the base, and the second end is rotatably connected to the lifting assembly; or the first end of the power element is rotatably connected to the working platform and the second end is rotatably connected to the base; or the first end of the power element is rotatably connected to the first branch arm of the lifting arm and the second end is rotatably connected to the second branch arm of the lifting arm; wherein the power element is one of a gas spring, a hydraulic cylinder and a linear actuator.

[0020] In some embodiments, a first pull rod is connected between the first arms of the two groups of lifting arms, and a second pull rod is connected between the second arms of the two groups of lifting arms, the first end of the power element is rotatably connected to the first pull rod and the second end of the power element is rotatably connected to the second pull rod.

[0021] In some embodiments, the lifting work platform also includes a locking mechanism, which is connected to the working platform and / or the base, and is used to lock the working platform at any height of its travel; or the locking mechanism is connected to the lifting arm, and is used to lock the working platform at any height of its travel.

[0022] In some embodiments, the locking mechanism includes an elastic pin connected to the first arm of the lifting arm and a locking plate connected to the second arm of the lifting arm, and the locking plate is provided with a plurality of locking holes distributed circumferentially around the hinge axis in the middle of the lifting arm, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the elastic pin through a cable, and is used to control the elastic pin to be inserted into or out of the locking hole; or

[0023] The locking mechanism comprises a locking pin connected to the working platform or the base, the first sliding member or the second sliding member is provided with a plurality of insertion holes spaced apart along the length direction, the working platform or the base is rotatably connected to a driving handle, the driving handle is connected to the locking pin through a cable, and is used to control the locking pin to be inserted into or out of the insertion hole; or

[0024] The locking mechanism includes a locking toothed disk coaxially connected to the synchronous gear, and the locking toothed disk is provided with a plurality of bayonet holes along the circumferential direction; a bracket is connected to the working platform or the base, a bayonet pin which can be inserted into or disengaged from the bayonet is connected to the bracket, an elastic member is connected to the bracket, the elastic member is connected to the bayonet pin, and is used to ensure that the bayonet pin always has a movement tendency to engage with the bayonet pin; an unlocking handle is connected to the working platform or the base, the unlocking handle is connected to the bayonet pin, and is used to control the bayonet pin to disengage from the bayonet pin.

[0025] In some embodiments, the first sliding member is provided with a first limiting portion that is offset against the synchronous gear, and the first limiting portion is located at the inner end of the first tooth portion; the second sliding member is provided with a second limiting portion that is offset against the synchronous gear, and the second limiting portion is located at the inner end of the second tooth portion.

[0026] In some embodiments, a detachable keyboard tray is connected to a side of the work platform close to the user.

[0027] In some embodiments, the synchronization mechanism includes a first screw rod, a second screw rod and a support, the axes of the first screw rod and the second screw rod are arranged in parallel and move toward or away from each other along the axial direction; the support is rotatably connected to a first rotating block threadedly connected to the first screw rod and a second rotating block threadedly connected to the second screw rod, the first screw rod and the second screw rod are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first screw rod and the second screw rod are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

[0028] In some embodiments, the synchronization mechanism includes a first slider, a second slider and a fixed seat, and the first slider and the second slider move toward or away from each other along the length direction of the slide rail; the fixed seat is connected to the base, and a lead screw is connected to the fixed seat, and the thread directions of the lead screw on both sides of the fixed seat are opposite, the first slider and the second slider are respectively threadedly connected to the lead screw on both sides of the fixed seat, the first slider and the second slider are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first slider and the second slider are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

[0029] In summary, compared with the related art, the lifting work platform of the present application has the following advantages: the lifting work platform is provided with a synchronization module between the first end of the first arm and the first end of the second arm of each group of lifting arms, and / or a synchronization module is provided between the second end of the first arm and the second end of the second arm of each group of lifting arms, and the synchronization module includes a hollow base, a synchronization mechanism arranged in the base, and a slide rail arranged on the base. Therefore, the lifting work platform arranges the synchronization mechanism in the base of the synchronization module, so that the synchronization mechanism is hidden in the base and not exposed, so that when the height of the working platform is adjusted, the synchronization mechanism can effectively avoid pinching the hand, and the safety is high; moreover, the synchronization mechanism is located in the base of the synchronization module, so that it can avoid being damaged by human accidental contact or accidental collision; furthermore, the synchronization mechanism is integrated in the synchronization module for sliding the end of the arm of the lifting arm, so that the structure between the synchronization mechanism and the end of the lifting arm is more compact, and the span of the synchronization mechanism is small, so that the lifting stability of the lifting work platform is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a lifting work platform according to some embodiments of the present application.

[0031] Figure 2 This is a schematic diagram from another angle of a lifting workbench according to some embodiments of the present application.

[0032] Figure 3 This is a schematic diagram of the bottom structure of a lifting work platform according to some embodiments of the present application.

[0033] Figure 4 It is a schematic diagram of a side sectional structure of a lifting work platform according to some embodiments of the present application.

[0034] Figure 5 It is a schematic cross-sectional structural diagram of a lifting work platform according to some embodiments of the present application.

[0035] Figure 6This is a schematic diagram of a folding lifting workbench according to some embodiments of the present application.

[0036] Figure 7 This is a schematic diagram of a folded state of a lifting workbench according to some embodiments of the present application.

[0037] Figure 8 It is a schematic diagram of a lifting component of a lifting workbench according to some embodiments of the present application.

[0038] Fig. 9 This is a schematic diagram of the assembly of two sliding parts in a working platform of a lifting workbench according to some embodiments of the present application.

[0039] Fig.10 It is a structural schematic diagram of Example 1 of a locking mechanism of a lifting workbench according to some embodiments of the present application.

[0040] Fig.11 It is a schematic back view of Example 1 of a locking mechanism of a lifting work platform according to some embodiments of the present application.

[0041] Fig.12 It is a structural schematic diagram of Example 2 of a locking mechanism of a lifting workbench according to some embodiments of the present application.

[0042] Fig.13 It is a schematic diagram of the assembly structure of Example 2 of a locking mechanism of a lifting workbench according to some embodiments of the present application.

[0043] Fig.14 It is a structural schematic diagram of Example 3 of a locking mechanism of a lifting workbench according to some embodiments of the present application.

[0044] Fig.15 It is a schematic diagram of the assembly structure of Example 3 of a locking mechanism of a lifting workbench according to some embodiments of the present application.

[0045] Fig.16 It is a structural schematic diagram of a lifting work platform according to other embodiments of the present application.

[0046] Fig.17 It is a structural schematic diagram of a synchronization mechanism of a lifting workbench according to other embodiments of the present application.

[0047] Fig.18 It is a schematic cross-sectional structural diagram of a synchronization mechanism of a lifting workbench according to other embodiments of the present application.

[0048] Fig.19 It is a schematic diagram of a synchronization mechanism of a lifting workbench according to other embodiments of the present application.

[0049] Description of reference numerals:

[0050] 1. working platform, 100. first base, 101. first slide rail, 2. base, 200. second base, 201. second slide rail, 3. lifting assembly, 300. lifting arm, 301. first support arm, 302. second support arm, 303. first pull rod, 304. second pull rod, 305. first swing arm, 306. second swing arm, 307. locking plate, 308. lock hole, 309. elastic pin, 310. wrench, 4. keyboard tray, 5. power element, 6. synchronization mechanism, 600. first sliding member, 601. second sliding member, 602. synchronization gear, 603. first tooth portion, 604. second tooth portion, 605. first limit Part, 606, second limiting part, 7, mounting frame, 8, synchronization rod, 9, locking pin, 900, driving handle, 901, socket, 10, locking gear disc, 1000, bayonet, 1001, bracket, 1002, sliding hole, 1003, bayonet, 1004, elastic member, 1005, hook, 1006, rod, 1007, unlocking handle, 11, linear actuator, 12, support, 1200, first screw rod, 1201, second screw rod, 1202, first rotating block, 1203, second rotating block, 13, screw, 1300, fixed seat, 1301, first slider, 1302, second slider, 1303, threaded hole. DETAILED DESCRIPTION

[0051] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0052] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0053] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] See also Figures 1 to 9 As shown, an embodiment of the present application discloses a lifting workbench, which is also called a desktop workbench, a desktop lifting table, etc. Its structure includes a work platform 1, a base 2 and a lifting component 3 connecting the work platform 1 and the base 2 for adjusting the height of the work platform 1 relative to the base 2; the work platform 1 is also called a table top, an upper platform, a storage panel, etc., the base 2 is also called a lower platform, a base frame, etc., and the base 2 is placed on a desktop or table top in the prior art.

[0056] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the lifting assembly 3 includes at least one group of lifting arms 300, and each group of lifting arms 300 includes two arms hinged in the middle to form an X shape: a first arm 301 and a second arm 302, that is, the first arm 301 and the second arm 302 are crossed in the middle to form an X shape, and the crossing part is rotatably connected through a rotating shaft, and the first end of the first arm 301 and the first end of the second arm 302 are respectively slidably connected to the working platform 1, and the second end of the first arm 301 and the second end of the second arm 302 are respectively slidably connected to the base 2.

[0057] It can be understood that the first support arm 301 or the second support arm 302 is a rod or plate with a certain length, having two ends, namely a first end and a second end relative to the first end; specifically in this embodiment, the first end, namely the upper end, is located at the end of the support arm close to the working platform, and the second end, namely the lower end, is located at the end of the support arm close to the base.

[0058] It is not difficult to understand that when the height of the working platform 1 is adjusted relative to the base 2, the two arms of the lifting arm perform a scissor difference motion or a shear motion, so that the first end of the first arm 301 and the first end of the second arm 302 move toward each other or away from each other at the same time, and at the same time, the second end of the first arm 301 and the second end of the second arm 302 move toward each other or away from each other; therefore, within the entire height adjustment range of the lifting work platform, the support center of gravity of the lifting component 3 and the center of gravity of the load of the working platform 1 remain relatively unchanged, or the support center of gravity of the lifting component 3 is always maintained on the same vertical line as the load center of gravity of the working platform 1, or the support center of gravity of the lifting component 3 coincides with the load center of gravity of the working platform 1 and will not shift relatively, so that the lifting work platform has good support stability, strong load-bearing capacity, and avoids rollover, with high safety.

[0059] For example, Figure 1 and Figure 4 As shown, at this time, the working platform 1 is at the highest position relative to the base 2, and the supporting center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 are maintained on the vertical center line of the working platform 1; Figure 6 As shown, the working platform 1 is in the middle position of its travel relative to the base 2, and the supporting center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 are still maintained on the vertical center line of the working platform 1; Figure 7 As shown, the working platform 1 is in a folded state relative to the base 2 , and the supporting center of gravity of the two sets of lifting arms 300 and the center of gravity of the load of the working platform 1 are still maintained on the vertical center line of the working platform 1 .

[0060] Furthermore, in the present embodiment, the lifting arms 300 of the lifting assembly 3 are divided into two groups, and the two groups of lifting arms 300 are respectively arranged on both sides of the bottom of the working platform 1, and are symmetrically arranged; in other embodiments, the lifting arms 300 of the lifting assembly 3 can also be arranged in three groups, four groups, etc., and are arranged in sequence along the length direction of the working platform 1.

[0061] It is understandable that when the two arms perform scissor difference motion, if the horizontal displacement and rotation angle of the upper ends of the two arms or / and the lower ends of the two arms are not synchronized or there is a movement lag, it is easy to cause the working platform 1 to tilt or rise and fall unsmoothly or jam; in the embodiment of the present application, in order to avoid these defects, Figure 1 , Figure 3 and Figure 4As shown, a synchronization module is provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302, and / or a synchronization module is provided between the second end of the first arm 301 and the second end of the second arm 302; that is, when there is one synchronization module, it can be provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302 or between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300; when there are two synchronization modules, a synchronization module is provided between the first end of the first arm 301 of each group of lifting arms 300 and the first end of the second arm 302 of each group of lifting arms 300 and between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300; further, the synchronization module includes a hollow base, a synchronization mechanism 6 provided in the base and a slide rail provided on the base, wherein the slide rail is a guide long hole opened on the side wall of the base and extending along the length direction of the base, and the guide long hole is connected to the inside of the base.

[0062] Further in the present embodiment, the first end of the first arm 301 and the first end of the second arm 302 of each group of lifting arms 300 are respectively slidably connected to the base through a slide rail, and the synchronization mechanism 6 is used to make the first end of the first arm 301 and the first end of the second arm 302 move toward each other or move away from each other synchronously along the length direction of the slide rail; and / or the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300 are respectively slidably connected to the base through a slide rail, and the synchronization mechanism 6 is used to make the second end of the first arm 301 and the second end of the second arm 302 move toward each other or move away from each other synchronously along the length direction of the slide rail.

[0063] Specifically, the first end of the first arm 301 and the first end of the second arm 302 of each set of lifting arms 300 are respectively connected to a sliding pin or a sliding shaft that slides in the slide rail on the base; the second end of the first arm 301 and the second end of the second arm 302 of each set of lifting arms 300 are respectively connected to a sliding pin or a sliding shaft that slides in the slide rail on the base.

[0064] It is not difficult to understand that the synchronization module is an independent component. When the synchronization module is arranged between the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302, the base of the synchronization module is fixedly connected to the working platform 1 or the base of the synchronization module is a component constituting the working platform 1; when the synchronization module is arranged between the second end of the first arm 301 of the lifting arm 300 and the second end of the second arm 302, the base of the synchronization module is fixedly connected to the base 2 and the base of the synchronization module is a component constituting the base 2.

[0065] For example, Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, a synchronization module is arranged between the first end of the first arm 301 and the first end of the second arm 302 of each group of lifting arms 300. Specifically, two parallel square metal tubes are connected to the bottom of the working platform 1, and an intermediate connecting tube is connected between the two square metal tubes. The square metal tubes form a first base 100 of the synchronization module. The first base 100 is connected to the working platform 1. The synchronization mechanism 6 of the synchronization module is arranged in the square metal tube. The square metal tube is provided with a first slide rail 101 which is connected to the inside of the square metal tube and extends along the length direction of the square metal tube. The first base 100, the first slide rail 101 on the first base 100 and the synchronization mechanism 6 in the first base 100 together constitute the synchronization between the first end of the first arm 301 and the first end of the second arm 302 of the lifting arm 300. Module; similarly, a synchronization module is arranged between the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300. Specifically, the base 2 has two parallel square metal tubes, and an intermediate connecting tube is connected between the two square metal tubes. The square metal tubes form a second base 200 of the synchronization module. The second base 200 is connected to the base 2. The synchronization mechanism 6 of the synchronization module is arranged in the square metal tube. The square metal tube is provided with a second slide rail 201 which is connected to the inside of the square metal tube and extends along the length direction of the square metal tube. The second base 200, the second slide rail 201 on the second base 200 and the synchronization mechanism 6 in the second base 200 together constitute a synchronization module between the second end of the first arm 301 and the second end of the second arm 302 of the lifting arm 300.

[0066] In this embodiment, a synchronization module is provided between the first end of the first arm 301 of each lifting arm 300 and the first end of the second arm 302, and / or a synchronization module is provided between the second end of the first arm 301 of each lifting arm 300 and the second end of the second arm 302, and the synchronization module includes a hollow base, a synchronization mechanism 6 provided in the base, and a slide rail provided on the base. Therefore, the lifting workbench sets the synchronization mechanism in the base of the synchronization module, so that the synchronization mechanism is hidden in the base and not exposed, so that when the height of the working platform 1 is adjusted, the synchronization mechanism 6 can effectively avoid pinching the hand, and the safety is high; moreover, the synchronization mechanism 6 is located in the base of the synchronization module, so that it can avoid being damaged by human accidental contact or accidental collision; furthermore, the synchronization mechanism 6 is integrated in the synchronization module for sliding the end of the arm of the lifting arm 300, so that the structure between the synchronization mechanism 6 and the end of the lifting arm is more compact, and the overall span of the synchronization mechanism 6 is small, so that the lifting stability of the lifting workbench is high.

[0067] Further in this embodiment, in order to synchronize the movement between the first end of the first arm 301 of each lifting arm 300 and the first end of the second arm 302 and to synchronize the movement between the second end of the first arm 301 of each lifting arm 300 and the second end of the second arm 302, as shown in FIG. Figure 4 As shown, a synchronization module is provided between the first end of the first arm 301 and the first end of the second arm 302 of each lifting arm group 300 and between the second end of the first arm 301 and the second end of the second arm 302 of each lifting arm group 300.

[0068] Further in this embodiment, the synchronization mechanism 6 includes a first sliding member 600, a second sliding member 601 and a synchronization gear 602. Figure 4 , Figure 8 and Fig. 9 As shown, the first sliding member 600 and the second sliding member 601 move toward or away from each other along the length direction, and the first sliding member 600 is provided with a first tooth portion 603 along the length direction, and the second sliding member 601 is provided with a second tooth portion 604 along the length direction; the synchronous gear 602 is located between the first sliding member 600 and the second sliding member 601 and is rotatably connected to the base, the synchronous gear 602 is respectively engaged with the first tooth portion 603 and the second tooth portion 604, the first sliding member 600 and the second sliding member 601 are respectively connected to the first end of the first support arm 301 of each group of lifting arms 300 and the first end of the second support arm 302, and / or the first sliding member 600 and the second sliding member 601 are respectively connected to the second end of the first support arm 301 and the second end of the second support arm 302 of each group of lifting arms 300. Therefore, when the working platform 1 rises relative to the base 2, the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302 move toward each other at the same time, and the second end of the first arm 301 of the lifting arm 300 and the second end of the second arm 302 move toward each other at the same time; conversely, when the working platform 1 descends relative to the base 2, the first end of the first arm 301 of the lifting arm 300 and the first end of the second arm 302 move away from each other at the same time, and the second end of the first arm 301 of the lifting arm 300 and the second end of the second arm 302 move away from each other at the same time; because the first tooth portion 603 of the first sliding member 600 and the second tooth portion 604 of the second sliding member 601 are in transmission meshing with the synchronous gear 602, when the end of any arm moves, the end of the other arm is also linked to move synchronously, with good synchronization performance, so that the working platform 1 can be raised and lowered smoothly.

[0069] In some embodiments, the axial direction of the rotating shaft of the synchronous gear 602 is set to be parallel to the horizontal plane where the working platform 1 is located. That is, the synchronous gear 602 of the synchronous module is arranged horizontally, so that the first tooth portion 603 of the first sliding member 600 and the second tooth portion 604 of the second sliding member 601 are distributed on both sides of the synchronous gear 602 in the vertical direction, and the back of the first tooth portion 603 and the back of the second tooth portion 604 are respectively slidably fitted with the top wall and the bottom wall of the slide rail in the base. That is, when the two sliding members are fitted in the slide rail of the base, the slide rail of the base can guide the sliding of the two sliding members, and can prevent the two sliding members from moving horizontally during the sliding process and deviating from or disengaging from the synchronous gear 602, so that the ends of the two arms are more stable when moving toward or away from each other.

[0070] In other embodiments, the synchronization mechanism of the above embodiment may also be of the following structure, such as Fig.17 and Fig.18 As shown, the synchronization mechanism includes a first screw rod 1200, a second screw rod 1201 and a support 12, the axes of the first screw rod 1200 and the second screw rod 1201 are arranged in parallel and move toward or away from each other along the axial direction; a first rotating block 1202 threadedly connected to the first screw rod 1200 and a second rotating block 1203 threadedly connected to the second screw rod 1201 are rotatably connected to the support 12, the first screw rod 1200 and the second screw rod 1201 are respectively connected to the first end of the first support arm 301 and the first end of the second support arm 302 of each group of lifting arms 300, and / or the first screw rod 1200 and the second screw rod 1201 are respectively connected to the second end of the first support arm 301 and the second end of the second support arm 302 of each group of lifting arms 300. In this embodiment, the first rotating block 1202 and the second rotating block 1203 are actually transmission nuts, and the synchronization mechanism adopts the cooperation of the lead screw and the transmission nut. When the end of the support arm drives the lead screw to move, the transmission nut can rotate in the circumferential direction. Conversely, limiting the rotation speed of the transmission nut can limit the movement speed of the lead screw, so that the two groups of lead screws of the synchronization mechanism maintain synchronous movement, thereby keeping the two support arm ends of the lifting arm 300 in synchronous movement.

[0071] In other embodiments, the synchronization mechanism may also be of the following structure: Fig.19As shown, the synchronization mechanism includes a first slider 1301, a second slider 1302 and a fixed seat 1300. The first slider 1301 and the second slider 1302 move toward or away from each other along the length direction of the slide rail in the base. A horizontally arranged lead screw 13 is connected to the fixed seat 1300. The thread directions of the lead screws 13 on both sides of the fixed seat 1300 are arranged in opposite directions. The first slider 1301 and the second slider 1302 are respectively threadedly connected to the lead screws 13 on both sides of the fixed seat 1300, that is, the first slider 1301 and the second slider 1302 are respectively connected with threaded holes 1303 matching with the lead screw threads; the first slider 1301 and the second slider 1302 are respectively connected to the first end of the first arm 301 and the first end of the second arm 302 of each group of lifting arms 300, and / or the first slider 1301 and the second slider 1302 are respectively connected to the second end of the first arm 301 and the second end of the second arm 302 of each group of lifting arms 300. The synchronous mechanism cooperates with the threads of the two sliders through the lead screw 13, so that the two arm ends of the lifting arm 300 keep moving synchronously.

[0072] Further, in the embodiment of the present application, in order to synchronize the movements of the two lifting arms 300 of the lifting assembly 3, as shown in FIG. Figure 3 As shown, the lifting workbench also includes at least one synchronization rod 8, which is arranged between the two sets of lifting arms 300. The upper ends of the two sets of lifting arms 300 are both provided with synchronization modules, and the two ends of the synchronization rod 8 are respectively connected to the synchronization gears 602 of the two sets of synchronization modules. Thus, the rotation of the synchronization gears 602 of the two sets of synchronization modules is kept synchronous. The setting of the synchronization rod 8 can also make up for the defects of asynchronism caused by the precision error or assembly error between the two sets of lifting arms 300, thereby further ensuring that the working platform 1 will not tilt during the rising or falling process, and always maintain a horizontal state, and the support stability is good.

[0073] For example, Figure 3 and Figure 5 As shown, a synchronization rod 8 is connected between two synchronization gears 602 of two sets of lifting arms 300 below the working platform 1. Specifically, a plug hole for the synchronization rod 8 to be plugged in is provided at the center of each synchronization gear 602. Both ends of the synchronization rod 8 are respectively plugged into the plug holes of the synchronization gears 602 of the two sets of lifting arms 300 and are circumferentially limited with the plug holes. The plug hole is a polygonal hole, and the synchronization rod 8 is a polygonal rod. It is simple and convenient to install, and when one synchronization gear 602 rotates, the other synchronization gear 602 can be linked to rotate synchronously.

[0074] In other embodiments, the synchronization rod 8 may also be installed between two synchronization gears 602 of two synchronization modules located on or near the base 2, so that the rotation of the two synchronization gears 602 is kept synchronized. Alternatively, the synchronization rod 8 may also be provided in two pieces, connected between the two synchronization gears 602 on the working platform 1 and between the two synchronization gears 602 on the base 2, respectively.

[0075] Furthermore, in order to prevent the two sliding members from over-moving when moving toward each other and thus damaging the teeth of the synchronous gear 602, as shown in FIG. Fig. 9 As shown, the first sliding member 600 is provided with a first limiting portion 605 which is against the synchronous gear 602, and the first limiting portion 605 is located at the inner end of the first tooth portion 603; the second sliding member 601 is provided with a second limiting portion 606 which is against the synchronous gear 602, and the second limiting portion 606 is located at the inner end of the second tooth portion 604. In this way, when the two sliding members move toward each other until the first limiting portion 605 is against the synchronous gear 602 or the second limiting portion 606 is against the synchronous gear 602, the two sliding members stop moving; at this time, the working platform 1 stays at the highest position. Moreover, the lifting arm 300 can also provide good support force in this position and prevent the working platform 1 from shaking. Similarly, the elongated sliding hole on the inner side wall of the base of the synchronization module also limits the sliding stroke of the sliding member.

[0076] In some embodiments, the lifting assembly 3 includes two sets of lifting arms 300, and the lifting workbench also includes a power element 5, which is connected between the work platform 1 and the base 2 and is located on a side close to one set of lifting arms 300, and is used to provide lifting force for the work platform 1 to rise and to provide load-bearing or partial load-bearing for the work platform 1. The power element 5 can be a gas spring, a hydraulic cylinder, or a linear actuator 11. The power element 5 is located on a side close to one set of lifting arms 300, so that the torque of the power element 5 is shortened, the locking effect is better, more stable, and does not shake.

[0077] In the embodiments of the present application, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the power element 5 is a gas spring, which is a self-locking gas spring, has a control valve, and a rotating member or a driving member that can drive the gas spring to control the valve to open is connected to the working platform 1 or the base 2. The first end of the power element 5 is rotatably connected to the first arm 301 of the lifting arm 300, and the second end is rotatably connected to the second arm 302 of the lifting arm 300. The power element 5 can drive the first arm 301 of the lifting arm 300 to rotate relative to the second arm 302, thereby driving the working platform 1 to rise.

[0078] For example, Figure 2 and Figure 8 As shown, the power element 5 is a gas spring, a first tie rod 303 is connected between the first arms 301 of the two sets of lifting arms 300, and a second tie rod 304 is connected between the second arms 302 of the two sets of lifting arms 300, a first end of the power element 5 is rotatably connected to the first tie rod 303, and a second end of the power element 5 is rotatably connected to the second tie rod 304. Further, a first swing arm 305 extending laterally outward along the first tie rod 303 is connected to the first tie rod 303, and a second swing arm 306 extending laterally outward along the second tie rod 304 is connected to the second tie rod 304, and both ends of the gas spring are hinged to the first swing arm 305 and the second swing arm 306, respectively.

[0079] In other embodiments, the power element 5 is a gas spring, the first end of the power element 5 is rotatably connected to the work platform 1 or the base 2, and the second end is rotatably connected to the first arm 301 or the second arm 302 of the lifting assembly 3; or the first end of the power element 5 is rotatably connected to the work platform 1 and the second end is rotatably connected to the base 2. There are various connection methods for the power element 5, which can be set according to specific needs.

[0080] In other embodiments, the power element 5 is a linear actuator 11, such as Fig.16 As shown, the first end of the power element 5 is hinged to the first swing arm 305 on the first pull rod 303, and the second end of the power element 5 is hinged to the second swing arm 306 on the second pull rod 304; the structure of the linear actuator 11 generally includes a drive motor and an actuator body transmission connected to the drive motor, the actuator body has an actuator end that can axially reciprocate relative to the actuator body, the actuator end is hinged to the first swing arm 305, and the tail end of the actuator body is hinged to the second swing arm 306; the linear actuator 11 can output linear thrust and tension; the linear actuator 11 can also be replaced by a linear motor or an electric push rod.

[0081] It is not difficult to understand that when the power element 5 is a linear actuator 11, the lifting workbench is an electric lifting workbench, and the linear actuator 11 itself can provide the load-bearing or supporting force of the working platform 1, and there is no need to set up an additional locking mechanism at this time; similarly, for a lifting workbench with lower load-bearing requirements, its power element 5 can use a controllable gas spring or a self-locking gas spring, and the working platform 1 can be kept at a certain height under the self-locking force of the gas spring. For a lifting workbench with higher load-bearing requirements and using a gas spring as the power element 5, it is generally equipped with a locking mechanism, which is connected to the working platform 1 and / or the base 2, and is used to lock the working platform 1 at any height of its travel; or in some embodiments, the locking mechanism can also be connected between the two arms of the lifting arm 300, and is used to lock the working platform 1 at any height of its travel.

[0082] In this embodiment, the structure of the locking mechanism can adopt the locking methods of the following three embodiments.

[0083] As the first embodiment of the locking mechanism, see Fig.10 and Fig.11 As shown, the locking mechanism includes an elastic pin 309 connected to the second arm 302 of the lifting arm 300 and a locking plate 307 connected to the first arm 301 of the lifting arm 300, or the locking mechanism includes an elastic pin 309 connected to the first arm 301 of the lifting arm 300 and a locking plate 307 connected to the second arm 302 of the lifting arm 300; and the locking plate 307 is provided with a plurality of locking holes 308 circumferentially distributed around the central hinge axis of the lifting arm 300; the elastic pin 309 generally includes a pin body that can be axially moved to insert into or disengage from the locking hole 308, a spring and a support frame for fixing the pin body, and the spring connects the pin body and the support frame; the locking mechanism also includes The wrench 310 connected to the working platform 1 or the base 2 is rotated. The wrench 310 is connected to the elastic pin 309 through a cable and is used to control the elastic pin 309 to insert or disengage from the lock hole 308. In a natural state, the elastic pin 309 is inserted into the lock hole 308 under the action of a spring, so that the relative rotation of the first arm 301 and the second arm 302 of the lifting arm 300 is locked, and the height of the working platform 1 remains unchanged; when it is necessary to adjust the height of the working platform 1, the wrench 310 is pulled, and the wrench 310 drives the pin body of the elastic pin 309 to disengage from the lock hole 308 through the cable, and the two arms of the lifting arm 300 are unlocked, and the height of the working platform 1 can be adjusted at this time.

[0084] As the second embodiment of the locking mechanism, see Fig.12 and Fig.13 As shown, the locking mechanism includes a lock pin 9 connected to the working platform 1 or the base 2, a first sliding member 6 or a second sliding member 7 is provided with a plurality of sockets 901 spaced apart along the length direction, a driving handle 900 is rotatably connected to the working platform 1 or the base 2, and the driving handle 900 is connected to the lock pin 9 through a cable, and is used to control the lock pin 9 to be inserted into or out of the socket 901; as in the above-mentioned embodiment 1, the lock pin 9 also includes a pin body, a spring and a support frame, and the support frame is connected to the working platform 1 or the base 2, and the pin body can slide axially, and always has a tendency to be plugged and locked under the action of the spring. In the locked state, the lock pin 9 is inserted into the socket 901 under the action of the spring, so that the sliding of the sliding member is locked, and the height of the working platform 1 remains unchanged; when the height of the working platform 1 needs to be adjusted, the driving handle 900 is rotated, and the driving handle 900 drives the pin body of the lock pin 9 to be out of the socket 901 through the cable, and the sliding member is unlocked, and the height of the working platform 1 can be adjusted at this time.

[0085] As in the third embodiment of the locking mechanism, see Fig.14 and Fig.15As shown, the locking mechanism includes a locking toothed disk 10 coaxially connected to the synchronous gear 602, and the locking toothed disk 10 is provided with a plurality of bayonet holes 1000 along the circumferential direction, a bracket 1001 is connected to the working platform 1 or the base 2, a bayonet pin 1003 which can be inserted into or disengaged from the bayonet hole 1000 is connected to the bracket 1001, an elastic member 1004 is connected to the bracket 1001, the elastic member 1004 is connected to the bayonet pin 1003, and is used to ensure that the bayonet pin 1003 always has a movement tendency to engage with the bayonet hole 1000, an unlocking handle 1007 is connected to the working platform 1 or the base 2, and the unlocking handle 1007 is connected to the bayonet pin 1003, and is used to control the bayonet pin 1003 to disengage from the bayonet hole 1000. Specifically, the bayonet 1003 is slidably connected in the sliding hole 1002 of the bracket 1001 along the horizontal direction, the elastic member 1004 is a coil spring, the first end of the elastic member 1004 is connected to the hook 1005 on the bracket 1001, the second end of the elastic member 1004 is connected to the bayonet 1003, and the unlocking handle 1007 is connected to the bayonet 1003 through the rod 1006 or the cable, which can drive the bayonet 1003 to disengage from the bayonet 1000 of the locking toothed disc 10. In this embodiment, when the working platform 1 is adjusted in height, the synchronous gear 602 can rotate under the action of the teeth of the sliding member, so that the locking toothed disc 10 rotates accordingly. When the latch 1003 is engaged with the latch 1000 of the locking toothed disc 10, the locking toothed disc 10 stops rotating, and the synchronous gear 602 stops rotating. At this time, the sliding of the sliding member is locked, and the height of the working platform 1 is locked; when the height of the working platform 1 needs to be adjusted, the unlocking handle 1007 drives the latch 1003 to disengage from the latch 1000 of the locking toothed disc 10, and the locking toothed disc 10 is unlocked, so that the height adjustment of the working platform 1 can be achieved. In this embodiment, the unlocking handle 1007 can be slidably connected or rotatably connected to the working platform 1 or the base 2.

[0086] In some embodiments, Figure 1 and Figure 7 As shown, in order to facilitate the placement of the keyboard, a keyboard tray 4 is connected to the side of the work platform 1 close to the user, and the keyboard tray 4 is detachably connected to the bottom of the work platform 1 through a mounting frame 7; a support pad is connected to the bottom of the keyboard tray 4, and when the work platform 1 is at the lowest position, the bottom plane of the support pad is at the same horizontal height as the bottom plane of the base 2. In this way, when the work platform 1 is at the lowest position, the support pad at the bottom of the keyboard tray 4 is in contact with the ground or the table top, which makes the standing stability of the lifting workbench better.

[0087] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0088] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A lifting workbench, characterized in that: include Work platform; A base that sits on an existing tabletop or countertop; as well as A lifting assembly connected to the working platform and the base for adjusting the height of the working platform relative to the base, the lifting assembly comprising at least one set of lifting arms, each set of lifting arms comprising two arms hinged in the middle in an X shape: a first arm and a second arm, and the first end of the first arm and the first end of the second arm are respectively slidably connected to the working platform, and the second end of the first arm and the second end of the second arm are respectively slidably connected to the base; A synchronization module is provided between the first end of the first support arm and the first end of the second support arm of each group of the lifting arms, and / or a synchronization module is provided between the second end of the first support arm and the second end of the second support arm; the synchronization module comprises a hollow base, a synchronization mechanism provided in the base, and a slide rail provided on the base; as well as The first end of the first support arm and the first end of the second support arm of each group of the lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the first end of the first support arm and the first end of the second support arm move synchronously toward each other or move synchronously away from each other along the length direction of the slide rail; and / or The second end of the first arm and the second end of the second arm of each group of lifting arms are respectively slidably connected to the base through the slide rail, and the synchronization mechanism is used to make the second end of the first arm and the second end of the second arm move toward each other or move away from each other synchronously along the length direction of the slide rail.

2. The lifting workbench according to claim 1, characterized in that: The synchronization mechanism includes a first sliding member, a second sliding member and a synchronization gear, the first sliding member and the second sliding member move toward or away from each other along the length direction, and the first sliding member is provided with a first tooth portion along the length direction, and the second sliding member is provided with a second tooth portion along the length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the base, and the synchronization gear is respectively engaged with the first tooth portion and the second tooth portion; the first sliding member and the second sliding member are respectively connected to the first end of the first support arm and the first end of the second support arm of each group of the lifting arms, and / or the first sliding member and the second sliding member are respectively connected to the second end of the first support arm and the second end of the second support arm of each group of the lifting arms.

3. The lifting workbench according to claim 2, characterized in that: The axial direction of the synchronous gear rotating shaft is parallel to the horizontal plane where the working platform is located.

4. The lifting workbench according to claim 3, characterized in that: The lifting assembly includes two groups of lifting arms, and the lifting workbench also includes at least one synchronization rod, which is arranged between the two groups of lifting arms, and the two ends of the synchronization rod are respectively connected to the synchronization gears of the synchronization mechanism of the two groups of lifting arms.

5. The lifting workbench according to claim 4, characterized in that: The center of the synchronous gear is provided with an inserting hole for inserting the synchronous rod; the two ends of the synchronous rod are respectively inserted into the inserting holes of the synchronous gears of the two groups of lifting arms and are circumferentially limited with the inserting holes.

6. The lifting workbench according to claim 1, characterized in that: The synchronization module is arranged between the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and between the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

7. The lifting workbench according to claim 1, characterized in that: The lifting assembly includes two groups of lifting arms, and the lifting workbench also includes a power element, which is connected between the work platform and the base and is located on a side close to one group of the lifting arms, and is used to provide lifting force for the work platform to rise.

8. The lifting work platform according to claim 7, characterized in that: The first end of the power element is rotatably connected to the working platform or the base, and the second end is rotatably connected to the lifting assembly; or the first end of the power element is rotatably connected to the working platform and the second end is rotatably connected to the base; or the first end of the power element is rotatably connected to the first branch arm of the lifting arm and the second end is rotatably connected to the second branch arm of the lifting arm; wherein the power element is one of a gas spring, a hydraulic cylinder and a linear actuator.

9. The lifting work platform according to claim 8, characterized in that: A first pull rod is connected between the first arms of the two groups of lifting arms, and a second pull rod is connected between the second arms of the two groups of lifting arms. The first end of the power element is rotationally connected to the first pull rod, and the second end of the power element is rotationally connected to the second pull rod.

10. The lifting work platform according to claim 2, characterized in that: The lifting work platform also includes a locking mechanism, which is connected to the working platform and / or the base and is used to lock the working platform at any height of its travel; or the locking mechanism is connected to the lifting arm and is used to lock the working platform at any height of its travel.

11. The lifting work platform according to claim 10, characterized in that: The locking mechanism comprises an elastic pin connected to the first arm of the lifting arm and a locking plate connected to the second arm of the lifting arm, and the locking plate is provided with a plurality of locking holes distributed circumferentially around the hinge axis in the middle of the lifting arm, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the elastic pin through a cable for controlling the elastic pin to be inserted into or out of the locking hole; or The locking mechanism comprises a locking pin connected to the working platform or the base, the first sliding member or the second sliding member is provided with a plurality of insertion holes spaced apart along the length direction, the working platform or the base is rotatably connected to a driving handle, the driving handle is connected to the locking pin through a cable, and is used to control the locking pin to be inserted into or out of the insertion hole; or The locking mechanism includes a locking toothed disk coaxially connected to the synchronous gear, and the locking toothed disk is provided with a plurality of bayonet holes along the circumferential direction; a bracket is connected to the working platform or the base, a bayonet pin which can be inserted into or disengaged from the bayonet is connected to the bracket, an elastic member is connected to the bracket, the elastic member is connected to the bayonet pin, and is used to ensure that the bayonet pin always has a movement tendency to engage with the bayonet pin; an unlocking handle is connected to the working platform or the base, the unlocking handle is connected to the bayonet pin, and is used to control the bayonet pin to disengage from the bayonet pin.

12. The lifting work platform according to claim 2, characterized in that: The first sliding member is provided with a first limiting portion which is against and limited by the synchronous gear, and the first limiting portion is located at the inner end of the first tooth portion; the second sliding member is provided with a second limiting portion which is against and limited by the synchronous gear, and the second limiting portion is located at the inner end of the second tooth portion.

13. The lifting work platform according to claim 1, characterized in that: A detachable keyboard tray is connected to a side of the work platform close to the user.

14. The lifting work platform according to claim 1, characterized in that: The synchronization mechanism includes a first screw rod, a second screw rod and a support, the axes of the first screw rod and the second screw rod are arranged in parallel and move toward or away from each other along the axial direction; a first rotating block threadedly connected to the first screw rod and a second rotating block threadedly connected to the second screw rod are rotatably connected to the support, the first screw rod and the second screw rod are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first screw rod and the second screw rod are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

15. The lifting work platform according to claim 1, characterized in that: The synchronization mechanism includes a first slider, a second slider and a fixed seat, the first slider and the second slider move toward or away from each other along the length direction of the slide rail; the fixed seat is connected to the base, and a lead screw is connected to the fixed seat, and the thread directions of the lead screws on both sides of the fixed seat are opposite, the first slider and the second slider are respectively threadedly connected to the lead screws on both sides of the fixed seat, the first slider and the second slider are respectively connected to the first end of the first branch arm and the first end of the second branch arm of each group of the lifting arms, and / or the first slider and the second slider are respectively connected to the second end of the first branch arm and the second end of the second branch arm of each group of the lifting arms.

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