Electrically powered lifting legs

Abstract

The utility model discloses electric lifting leg, including support base, still be connected with the guide frame of fixed frame periphery on support base, the top end part of guide frame is provided with the limiting frame for limiting the upper limit position of movable frame, every side of the inner wall of limiting frame all is provided with the limiting protruding that acts on movable frame outer wall surface, every side of movable frame bottom end part all is installed with the stabilizing frame, and the stabilizing protruding that has the outer convex and can butt in the inner wall surface of guide frame is possessed on stabilizing frame. In the utility model, guide frame and fixed frame constitute main guide structure together, and the inner wall surface and outer wall surface of movable frame are guided doubly in cooperation, and then can realize the lifting movement of movable frame with the cooperation of precision lead screw transmission, the butt of stabilizing protruding and the inner wall surface of guide frame, the butt of limiting protruding and movable frame outer wall surface and the butt between nut protruding and movable frame inner wall surface form the secondary guide system, and in the process of lifting movement, can effectively restrain the lateral vibration of movable frame.

Description

Technical Field

[0001] This utility model relates to the field of lifting leg technology, and in particular to electric lifting leg. Background Technology

[0002] In fields such as scientific research instruments, industrial equipment, and medical equipment, lifting legs, as adjustable-height support structures, have become key functional modules, and their performance directly affects the applicability and operational accuracy of the equipment. Lifting mechanisms can meet the following core requirements: 1. Ergonomic adaptation: They must adapt to the height differences and operating posture requirements of different operators, achieving stepless height adjustment; 2. Space optimization: By reusing vertical space, they improve equipment layout efficiency and reduce the space occupied for transportation and storage. Currently, mainstream lifting mechanisms mainly adopt the following technical solutions: 1. Hydraulic / pneumatic drive: Lifting is achieved through fluid pressure, featuring high load-bearing capacity, but with risks of fluid leakage and maintenance complexity; 2. Electric push rod drive: Employing mechatronics design, it offers high control precision, but suffers from thrust limitations and mechanical backlash issues; 3. Direct-drive motor type: Lifting is achieved through mechanical transmission such as lead screws, gears, and racks, with a simple structure, but dynamic response characteristics need improvement. Taking the third type of drive as an example, it is prone to large swaying and complex anti-shake structure during the lifting process. The current approach is to improve the material of the drive structure and the complex anti-shake structure, but this will increase the production cost and is not economically feasible, thus reducing the practicality of the application. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned problems of the prior art and provide an electric lifting leg, which has the advantages of simple structure, stable and reliable operation, and low production cost.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] The electric lifting leg includes a support base, a fixed frame connected to the support base, and a movable frame that can move up and down relative to the fixed frame and surround the fixed frame. A lead screw is rotatably connected to the movable frame, and a lifting drive assembly for driving the lead screw to rotate is also installed on the movable frame. A nut seat that is sleeved on the lead screw and can cooperate with the lead screw is installed at the top of the fixed frame.

[0006] The support base is also connected to a guide frame located around the fixed frame, and the movable frame can move up and down in the area between the guide frame and the fixed frame;

[0007] The top of the guide frame is provided with a limiting frame to limit the upward movement of the movable frame. Each side of the inner wall of the limiting frame is provided with a limiting protrusion that acts on the outer wall of the movable frame.

[0008] Each side of the bottom end of the movable frame is equipped with a stabilizing frame, which has an outward protrusion that can abut against the inner wall of the guide frame.

[0009] Furthermore, the stabilizing protrusion is formed by the outward pressing of the stabilizing frame, and correspondingly, the inner surface of the stabilizing frame has a stabilizing groove adapted to the stabilizing protrusion.

[0010] Furthermore, the nut seat has an insertion section that can be inserted into the fixing frame and a cover section that is connected to the top of the insertion section and extends outward on each side;

[0011] Each side of the cover section is provided with a nut protrusion that can mate with the inner wall surface of the movable frame;

[0012] The cover section has ventilation holes running through its upper and lower ends.

[0013] Furthermore, the limiting frame is detachably connected to the fixed frame;

[0014] The limiting frame has a locking section that can be locked onto the inner wall of the fixed frame and can cooperate with the top of the stabilizing frame, and an anti-detachment section that connects to the top of the locking section and can be adapted to the top of the guide frame.

[0015] Furthermore, each side of the snap-fit ​​segment is provided with a recessed snap-fit ​​groove;

[0016] Each side of the top of the guide frame is provided with an inwardly inclined snap-fit ​​piece that can engage with the snap-fit ​​groove.

[0017] Furthermore, each side of the snap-fit ​​segment has two spaced-apart deformable notches located on both sides of the snap-fit ​​groove.

[0018] Furthermore, the stabilization frame is detachably connected to the movable frame;

[0019] The inner side of the stabilization frame is provided with snap-fit ​​protrusions;

[0020] The movable frame has a snap-fit ​​opening that can engage with the snap-fit ​​protrusion.

[0021] Furthermore, each side of the bottom end of the movable frame is provided with a deformation opening located above the stabilization frame.

[0022] Furthermore, a limiting block located below the nut seat is detachably sleeved at the bottom end of the lead screw;

[0023] The limit block includes limit block A and limit block B;

[0024] The limiting block A has a socket A through its upper and lower ends in the middle. The limiting block A has a notch A and a protrusion A connected to the bottom of the notch A. The notch A also has a notch A that communicates with the socket A and penetrates its outer surface.

[0025] The middle part of the limiting block B has a socket B that runs through its upper and lower ends and can cooperate with the socket A. The limiting block B has a protruding section B and a notch section B connected to the bottom end of the protruding section B. The notch section B also has a notch B that communicates with the socket B and runs through its outer surface.

[0026] When limit block A and limit block B move from opposite sides of the lead screw to the concave-convex connection, the sleeve through port A and sleeve through port B are sleeved together on the lead screw, and the protruding section B is locked with the notch A, and the protruding section A is locked with the notch B.

[0027] Furthermore, the lifting drive assembly includes a lifting drive device, and the output shaft of the lifting drive device has a transmission worm gear;

[0028] The top end of the lead screw is fitted with a transmission worm gear that can mesh with the transmission worm.

[0029] This utility model has the following beneficial effects: Through innovative structural design and optimization, this utility model achieves multiple performance improvements in the lifting leg. When applied to specific products, it can also improve the corresponding lifting performance of the products. Specifically:

[0030] 1. Significantly Improved Motion Stability: The guide frame and fixed frame together form the main directional structure, providing dual guidance for the inner and outer walls of the movable frame. Combined with a precision lead screw drive, this enables the lifting and lowering movement of the movable frame. The contact between the stabilizing protrusion and the inner wall of the guide frame, the contact between the limiting protrusion and the outer wall of the movable frame, and the contact between the nut protrusion and the inner wall of the movable frame form a secondary guiding system, which can effectively suppress the lateral vibration of the movable frame during lifting and lowering. In particular, the elastic deformation setting of the stabilizing protrusion can also have guiding and impact absorption functions, which can further improve the stability and reliability of operation.

[0031] 2. Optimized assembly and maintenance performance: The snap-fit ​​protrusions and snap-fit ​​through holes facilitate the installation and removal of the stabilizing frame on the movable frame; the deformable through-holes facilitate the installation and removal of the movable frame on the guide frame; the snap-fit ​​sections and anti-detachment sections facilitate the installation and removal of the limiting frame on the guide frame; the design of limiting block A and limiting block B facilitates the installation and removal on the lead screw, thereby improving assembly ease.

[0032] 3. Enhanced safety and reliability: The limit frame provides a mechanical stop for the movable frame, preventing it from moving excessively upwards and detaching from the guide frame; the limit block provides a mechanical stop for the movable frame, preventing it from moving excessively upwards and detaching from the fixed frame; the engagement of the snap-fit ​​piece and the snap-fit ​​groove forms a self-locking structure, preventing the limit frame from accidentally moving upwards and detaching from the guide frame. The design of the deformation notch allows the snap-fit ​​section to undergo corresponding elastic deformation without damaging the limit frame, adapting to different working conditions.

[0033] As can be seen, this utility model adopts a simplified structure, which can achieve motion stability, ease of assembly and use without significantly increasing production costs. Attached Figure Description

[0034] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in describing the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments recorded in this utility model. Those skilled in the art can derive other drawings from the following drawings without any creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the electric lifting leg of this utility model when it is raised;

[0036] Figure 2 This is a cross-sectional view of a specific embodiment of the electric lifting leg of this utility model when it is raised;

[0037] Figure 3 This is a schematic diagram of the structure of a specific embodiment of the electric lifting leg of this utility model during descent;

[0038] Figure 4 This is a cross-sectional view of a specific embodiment of the electric lifting leg of this utility model during descent;

[0039] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0040] Figure 6 This is a structural schematic diagram of a specific embodiment of the movable frame and fixed frame in the electric lifting leg of this utility model;

[0041] Figure 7 This is a structural schematic diagram of a specific embodiment of the limiting frame and nut seat in the electric lifting leg described in this utility model;

[0042] Figure 8 This is a structural schematic diagram of a specific embodiment of the fixing frame in the electric lifting leg described in this utility model;

[0043] Figure 9 This is a structural schematic diagram of a specific embodiment of the guide frame in the electric lifting leg of this utility model;

[0044] Figure 10 This is a schematic diagram of a specific embodiment of the nut seat in the electric lifting leg of this utility model;

[0045] Figure 11 This is a structural schematic diagram of a specific embodiment of the support base in the electric lifting leg of this utility model;

[0046] Figure 12 This is a schematic diagram of a specific embodiment of the lead screw drive assembly in the electric lifting leg of this utility model;

[0047] Figure 13 This is a structural schematic diagram of a specific embodiment of the lead screw, nut seat, and limit block in the electric lifting leg of this utility model.

[0048] Figure 14 This is a structural schematic diagram of a specific embodiment of the movable frame in the electric lifting leg of this utility model;

[0049] Figure 15 This is a structural schematic diagram of a specific embodiment of the electric lifting leg stabilizing frame described in this utility model;

[0050] Figure 16 This is a schematic diagram of a specific embodiment of the electric lifting leg limiting frame described in this utility model;

[0051] Figure 17 This is a schematic diagram of a specific embodiment of the limiting block in the electric lifting leg of this utility model;

[0052] Figure 18 and Figure 19 This is an exploded view of a specific embodiment of the limiting block in the electric lifting leg described in this utility model.

[0053] The component names corresponding to the reference numerals in the attached drawings are as follows: 1. Fixed frame, 2. Movable frame, 3. Lead screw, 4. Nut seat, 5. Guide frame, 6. Limiting frame, 7. Limiting protrusion, 8. Stabilizing frame, 9. Stabilizing protrusion, 10. Stabilizing groove, 11. Snap-fit ​​section, 12. Anti-detachment section, 13. Snap-fit ​​groove, 14. Snap-fit ​​piece, 15. Deformation notch, 16. Deformation opening, 17. Support base, 18. Limiting block, 19. Lifting drive device, 20. Transmission. 21. Worm gear; 22. Transmission worm wheel; 23. Nut protrusion; 24. Insertion section; 25. Cover section; 26. Vent hole; 27. Limiting block A; 28. Limiting block B; 29. ​​Notch section A; 30. Protrusion section A; 31. Socket port A; 32. Notch port B; 33. Protrusion section B; 34. Notch section B; 35. Notch B; 36. Guide connection section; 37. Fixed connection section; 38. Snap-fit ​​protrusion; 39. Snap-fit ​​port. Detailed Implementation

[0054] To enable those skilled in the art to better understand this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0055] Example 1

[0056] like Figures 1 to 19 As shown, the electric lifting leg includes a support base 17, a fixed frame 1 connected to the support base 17, and a movable frame 2 that can move up and down relative to the fixed frame 1 and surround the fixed frame 1. A lead screw 3 is rotatably connected to the movable frame 2, and a lifting drive assembly for driving the lead screw 3 to rotate is also installed on the movable frame 2. A nut seat 4 that is sleeved on the lead screw 3 and can cooperate with the lead screw 3 is installed at the top of the fixed frame 1.

[0057] The support base 17 is also connected to a guide frame 5 located on the periphery of the fixed frame 1, and the movable frame 2 can move up and down in the area between the guide frame 5 and the fixed frame 1;

[0058] The top of the guide frame 5 is provided with a limiting frame 6 for limiting the upper limit position of the movable frame 2. Each side of the inner wall of the limiting frame 6 is provided with a limiting protrusion 7 that acts on the outer wall surface of the movable frame 2.

[0059] Each side of the bottom end of the movable frame 2 is equipped with a stabilizing frame 8, and the stabilizing frame 8 has a stabilizing protrusion 9 that protrudes outward and can abut against the inner wall of the guide frame 5.

[0060] Preferably, the lifting drive assembly includes a lifting drive device 19, and the output shaft of the lifting drive device 19 has a transmission worm gear 20;

[0061] The top end of the lead screw 3 is fitted with a transmission worm wheel 21 that can mesh with the transmission worm 20.

[0062] In this embodiment, the lifting drive device 19 can be a geared motor. Both the fixed frame 1 and the movable frame 2 have a square frame-column structure. The movable frame 2 is sleeved on the fixed frame 1 and can move up and down relative to the fixed frame 1 to achieve a lifting effect. The top of the movable frame 2 can be connected to a structure such as a desktop to achieve the effect of lifting the desktop. The guide frame 5 not only achieves the effect of aesthetic protection, but also guides and limits the lifting and moving of the movable frame 2 to obtain reliable stability.

[0063] In application, the lifting drive device 19 is activated. Through the cooperation of the transmission worm 20 and the transmission worm wheel 21, the lead screw 3 is driven to rotate. Through the cooperation of the lead screw 3 and the nut seat 4, the movable frame 6 can be moved up and down relative to the fixed frame 1 and the guide frame 5, thereby driving the tabletop and other structures connected to the movable frame 6 to achieve the lifting effect. During the lifting process, the stabilizing protrusion 9 abuts against the inner wall of the guide frame 5, and the limiting protrusion 7 abuts against the outer wall of the movable frame 2. In this way, the stability of the movable frame 2 can be improved to reduce the problem of shaking and vibration. In addition, the setting of the limiting frame 6 can also prevent the movable frame 2 from accidentally detaching from the fixed frame 1, thereby improving the reliability of the operation of this embodiment.

[0064] Each of the stabilizing frames 8 has two spaced-apart stabilizing protrusions 9, which increases the contact points between the movable frame 2 and the fixed frame 1; each side of the inner wall of the limiting frame 6 is provided with two spaced-apart limiting protrusions 7, which increases the contact points between the movable frame 2 and the limiting frame 1, thereby further improving the stability of operation.

[0065] like Figure 11 As shown, the support base 17 is provided with a guide connecting section 36 for connecting the guide frame 5 and a fixed connecting section 37 located on the guide connecting section 36 for connecting the fixed frame 1.

[0066] Preferably, the stabilizing protrusion 9 is formed by the outward pressing of the stabilizing frame 8, and correspondingly, the inner side of the stabilizing frame 8 has a stabilizing groove 10 adapted to the stabilizing protrusion 9.

[0067] This design allows the stabilizing protrusion 9 to have sufficient elastic deformation force. Thus, when the movable frame 2 moves up and down, the stabilizing protrusion 9 can absorb the impact force and achieve a buffering effect through its own deformation capacity, thereby further improving the stability of operation.

[0068] Preferably, the nut seat 4 has an insertion section 23 that can be inserted into the fixing frame 1 and a cover section 24 that is connected to the top of the insertion section 23 and extends outward on each side;

[0069] Each side of the cover section 24 is provided with a nut protrusion 22 that can mate with the inner wall surface of the movable frame 2;

[0070] The cover section 24 has ventilation holes 25 that run through its upper and lower ends.

[0071] In this embodiment, during the lifting and lowering of the movable frame 2, the nut protrusion 22 can abut against the inner wall surface of the movable frame 2, which, together with the limiting protrusion 7, can improve the stability of the movable frame 2's vertical movement. Each side of the cover section 24 is provided with two spaced-apart nut protrusions 22, which increases the contact points between the movable frame 2 and the cover section 24, further improving operational stability.

[0072] When the movable frame 2 moves up and down rapidly, the vent hole 25 can release the air pressure between the movable frame 2 and the fixed frame 1.

[0073] Preferably, the limiting frame 6 is detachably connected to the fixing frame 2;

[0074] The limiting frame 6 has a locking section 11 that can be locked onto the inner wall of the fixed frame 2 and can cooperate with the top of the stabilizing frame 8, and an anti-detachment section 12 that is connected to the top of the locking section 11 and can be adapted to the top of the guide frame 5.

[0075] In this embodiment, the anti-detachment section 12 serves two purposes: firstly, it prevents the limiting frame 6 from moving excessively downwards; secondly, it acts as a leverage point for assembling and disassembling the limiting frame 6. The snap-fit ​​section 11 enhances the ease of assembling and disassembling the limiting frame 6, thereby improving the simplicity of assembly.

[0076] In order to facilitate the insertion of the limiting frame 6 into the opening at the top of the guide frame 5, the thickness of each side of the snap-fit ​​section 11 gradually decreases from top to bottom, and the narrower and thinner bottom end is more suitable for insertion into the guide frame 5.

[0077] Preferably, each side of the snap-fit ​​segment 11 is provided with a recessed snap-fit ​​groove 13;

[0078] Each side of the top end of the guide frame 5 is provided with an inwardly inclined snap-fit ​​piece 14 that can engage with the snap-fit ​​groove 13.

[0079] like Figure 5 and Figure 9As shown, the top edge of the snap-fit ​​piece 14 is connected to the guide frame 5, while the other three sides are suspended. This allows for a certain degree of elastic deformation. When the snap-fit ​​section 11 is inserted into the guide frame 5, the snap-fit ​​piece 14 can be moved outward under force. When the snap-fit ​​section 11 reaches the designated position, the snap-fit ​​groove 13 is aligned with the area of ​​the snap-fit ​​piece 14. At this time, the snap-fit ​​piece 14 can be reset and spring into the snap-fit ​​groove 13 to achieve a locking structure. This prevents the limit frame 6 from accidentally moving upward and detaching from the guide frame 5. When it is necessary to disassemble the limit frame 6, the snap-fit ​​piece 14 can be pushed outward by external force to detach it from the snap-fit ​​groove 13, and then the limit frame 6 can be moved upward simultaneously.

[0080] The snap-fit ​​piece 14 can be formed by making three-sided cuts on the side wall of the guide frame 5 and pressing it inward.

[0081] Preferably, each side of the snap-fit ​​segment 11 has two spaced-apart deformable notches 15 located on both sides of the snap-fit ​​groove 13.

[0082] In this embodiment, the design of the deformation notch 15 allows the snap-fit ​​segment 11 to undergo adaptive elastic deformation when it is first inserted into the top opening of the guide frame 5 to adapt to the inner wall surface of the guide frame 5, and then gradually recovers its deformation after insertion to achieve the effect of locking it to the inner wall of the guide frame 5.

[0083] Preferably, the stabilization frame 8 is detachably connected to the movable frame 2;

[0084] The inner side of the stabilization frame 8 is provided with a snap-fit ​​protrusion 38;

[0085] The movable frame 2 has a snap-fit ​​opening 39 that can cooperate with the snap-fit ​​protrusion 38.

[0086] In this embodiment, the snap-fit ​​protrusion 38 and snap-fit ​​opening 39 can improve the ease of assembling and disassembling the stabilization frame 8, thereby improving the ease of assembly.

[0087] Preferably, each side of the bottom end of the movable frame 2 is provided with a deformable opening 16 located above the stabilizing frame 8.

[0088] In this embodiment, the design of the deformable opening 16 facilitates the adaptive elastic deformation of the bottom end of the movable frame 2, thus making it easy to place the movable frame 2 into the top area between the fixed frame 1 and the guide frame 5. After installation, the upper limit frame 6 is then assembled at the top of the guide frame 5 to limit the upward movement limit position of the movable frame 2.

[0089] Preferably, the bottom end of the lead screw 3 is detachably sleeved with a limiting block 18 located below the nut seat 4;

[0090] Limit block 18 includes limit block A26 and limit block B27;

[0091] The limiting block A26 has a socket A30 that runs through its upper and lower ends in the middle. The limiting block A26 has a notch A28 and a protrusion A29 that connects to the bottom of the notch A28. The notch A28 also has a notch A31 that communicates with the socket A30 and runs through its outer surface.

[0092] The limiting block B27 has a socket B32 that runs through its upper and lower ends and can be matched with the socket A30 in the middle. The limiting block B27 has a protruding section B33 and a notch section B34 connected to the bottom of the protruding section B33. The notch section B34 also has a notch B35 that communicates with the socket B32 and runs through its outer surface.

[0093] When the limiting blocks A26 and B27 move from opposite sides of the lead screw 3 to the concave-convex connection, the sleeve opening A30 and the sleeve opening B32 are sleeved together on the lead screw 3, and the protruding section B33 is locked with the notch A31, and the protruding section A29 is locked with the notch B35.

[0094] In this embodiment, the design of the limiting block 18 can prevent the lead screw 3 from accidentally disengaging from the nut seat 4. The design of the limiting blocks A26 and B27 facilitates the installation and removal of the lead screw 3, thereby improving the ease of assembly.

[0095] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electric lifting leg, comprising a support base (17), a fixed frame (1) connected to the support base (17), and a movable frame (2) that can move up and down relative to the fixed frame (1) and surround the fixed frame (1), a lead screw (3) rotatably connected to the movable frame (2), and a lifting drive assembly for driving the lead screw (3) to rotate is also installed on the movable frame (2), and a nut seat (4) that is sleeved on the lead screw (3) and can cooperate with the lead screw (3) is installed at the top of the fixed frame (1), characterized in that: The support base (17) is also connected to a guide frame (5) located on the periphery of the fixed frame (1), and the movable frame (2) can move up and down in the area between the guide frame (5) and the fixed frame (1); The top of the guide frame (5) is provided with a limiting frame (6) for limiting the upper limit position of the movable frame (2). Each side of the inner wall of the limiting frame (6) is provided with a limiting protrusion (7) that acts on the outer wall of the movable frame (2). Each side of the bottom end of the movable frame (2) is equipped with a stabilizing frame (8), and the stabilizing frame (8) has a stabilizing protrusion (9) that protrudes outward and can abut against the inner wall of the guide frame (5).

2. The electric lifting leg according to claim 1, characterized in that: The stabilizing protrusion (9) is formed by the outward pressing of the stabilizing frame (8), and correspondingly, the inner side of the stabilizing frame (8) has a stabilizing groove (10) adapted to the stabilizing protrusion (9).

3. The electric lifting leg according to claim 1, characterized in that: The nut seat (4) has an insertion section (23) that can be inserted into the fixing frame (1) and a cover section (24) that is connected to the top of the insertion section (23) and extends outward on each side. Each side of the cover section (24) is provided with a nut protrusion (22) that can mate with the inner wall surface of the movable frame (2); The cover section (24) has ventilation holes (25) that run through its upper and lower ends.

4. The electric lifting leg according to claim 1, characterized in that: The limiting frame (6) is detachably connected to the fixing frame (1); The limiting frame (6) has a snap-fit ​​section (11) that can snap onto the inner wall of the fixed frame (1) and cooperate with the top of the stabilizing frame (8) and an anti-detachment section (12) that connects to the top of the snap-fit ​​section (11) and can be adapted to the top of the guide frame (5).

5. The electric lifting leg according to claim 4, characterized in that: Each side of the snap-fit ​​section (11) is provided with a recessed snap-fit ​​groove (13). Each side of the top of the guide frame (5) is provided with an inwardly inclined snap-fit ​​piece (14) that can engage with the snap-fit ​​groove (13).

6. The electric lifting leg according to claim 5, characterized in that: Each side of the snap-fit ​​segment (11) has two spaced deformation notches (15) located on both sides of the snap-fit ​​groove (13).

7. The electric lifting leg according to claim 1, characterized in that: The stabilization frame (8) is detachably connected to the movable frame (2); The inner side of the stabilization frame (8) is provided with snap-fit ​​protrusions (38); The movable frame (2) is provided with a snap-fit ​​opening (39) that can cooperate with the snap-fit ​​protrusion (38).

8. The electric lifting leg according to claim 1, characterized in that: Each side of the bottom end of the movable frame (2) is provided with a deformable opening (16) located above the stabilizing frame (8).

9. The electric lifting leg according to claim 1, characterized in that: The bottom end of the lead screw (3) is detachably sleeved with a limiting block (18) located below the nut seat (4). The limiting block (18) includes limiting block A (26) and limiting block B (27); The middle part of the limiting block A (26) is provided with a socket A (30) that runs through its upper and lower ends. The limiting block A (26) has a notch section A (28) and a protrusion section A (29) connected to the bottom end of the notch section A (28). The notch section A (28) is also provided with a notch A (31) that communicates with the socket A (30) and runs through its outer surface. The middle part of the limiting block B (27) is provided with a socket opening B (32) that runs through its upper and lower ends and can be matched with the socket opening A (30). The limiting block B (27) has a protruding section B (33) and a notch section B (34) connected to the bottom end of the protruding section B (33). The notch section B (34) is also provided with a notch B (35) that communicates with the socket opening B (32) and runs through its outer surface. When the limiting block A (26) and the limiting block B (27) move from both sides of the lead screw (3) to the concave-convex connection, the sleeve opening A (30) and the sleeve opening B (32) are sleeved on the lead screw (3), and the protruding section B (33) is locked with the notch A (31), and the protruding section A (29) is locked with the notch B (35).

10. The electric lifting leg according to claim 9, characterized in that: The lifting drive assembly includes a lifting drive device (19), and the output shaft of the lifting drive device (19) has a transmission worm gear (20). The top end of the lead screw (3) is fitted with a transmission worm wheel (21) that can mesh with the transmission worm (20).

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