Liftable U-shaped movable support

Abstract

The utility model belongs to the field of supporting frame body structures, and particularly relates to a liftable U-shaped movable support which aims at solving the problem that an existing support cannot meet the requirement for large-range angle adjustment and comprises a movable support assembly. The mobile support assembly comprises an upper L-shaped frame rod and a lower L-shaped frame rod, the butt joint position of the upper L-shaped frame rod and the lower L-shaped frame rod is connected with a lifting adjusting assembly, the mobile support assembly is of a U-shaped frame body structure, the mobile terminal assembly is supported and connected through the U-shaped frame body structure, and when a camera is rotated, the lifting adjusting assembly can be adjusted, so that the lifting adjusting assembly is not prone to falling off when the camera is rotated. A larger rotation angle can be achieved; a crown-shaped gear of the lifting adjusting assembly is in threaded connection with a threaded rod, so that the threaded rod can drive an adjustable inner rod to move up and down for adjustment, mobile terminal assemblies of different heights can be conveniently installed, and the installation positions of the mobile terminal assemblies can be conveniently and finely adjusted.

Description

Technical Field

[0001] The utility model relates to a mobile bracket, in particular to a liftable U-shaped mobile bracket, belonging to the technical field of support frame structures. Background Art

[0002] With the increasing development of the Internet, webcasting has become an important communication platform. Webcasting is not limited to categories such as entertainment and live commerce. It can be carried out using terminals such as mobile phones, tablets, and cameras. However, these devices need brackets to clamp and fix them to ensure high-quality webcasting.

[0003] In the prior art, such as a telescopic support frame of a mobile phone webcasting bracket disclosed in the publication number CN219514111U, the rack meshing with the gear can move up and down along the opening direction of the limit groove by rotating the gear, thereby driving the telescopic rod and the mobile phone bracket to move up and down. This design only requires the anchor to adjust with one hand, so the anchor does not need to put down the product to adjust. In addition, the meshing design allows the bracket to be adjusted slightly to ensure that the anchor can find the best webcasting position. Although the prior art can support some webcasting terminals, such as mobile phones, in order to improve the webcasting effect, professional cameras with larger volume and weight are often used for webcasting. However, the existing brackets cannot support and fix larger cameras. Secondly, in order to improve the webcasting effect, although small adjustments can, to a certain extent, adjust the angles and orientations shown in the webcast, for some large webcasting sites or for a more comprehensive display of the webcasting process of products, the camera often needs to be rotated and adjusted over a large range, and the prior art cannot meet higher webcasting requirements. Summary of the Invention

[0004] The utility model provides a liftable U-shaped mobile bracket to solve the problem that the existing bracket cannot meet the large-range angle adjustment.

[0005] The utility model realizes the above object through the following technical solutions: A liftable U-shaped mobile bracket includes a mobile bracket assembly, the mobile bracket assembly is installed on a height adjustment component, and a mobile terminal component is installed on the mobile bracket assembly;

[0006] The mobile bracket assembly includes an upper L-shaped frame rod and a lower L-shaped frame rod, and a lifting adjustment component is connected at the docking position of the upper L-shaped frame rod and the lower L-shaped frame rod;

[0007] The lifting adjustment component includes an adjustable inner rod, a threaded rod, and a crown gear. Both ends of the adjustable inner rod are movably connected inside the upper L-shaped frame rod and the lower L-shaped frame rod. The threaded rod is fixedly connected inside the adjustable inner rod. The crown gear is rotatably connected inside the lower L-shaped frame rod, and the crown gear is threadedly engaged with the rod body of the threaded rod.

[0008] As a further solution of the present utility model: an upper insertion inner cavity is provided in the vertical rod body of the upper L-shaped rod, a lower insertion inner cavity is provided in the vertical rod body of the lower L-shaped rod, and the upper and lower ends of the adjustable inner rod are respectively inserted into the upper insertion inner cavity and the lower insertion inner cavity.

[0009] As a further solution of the present utility model: the height adjustment assembly includes a tripod and a height adjustment rod. The bottom end of the height adjustment rod is movably inserted on the central shaft rod of the tripod, a threaded circle is provided at the upper end of the height adjustment rod, and a threaded hole is provided in the middle of the horizontal rod body of the lower L-shaped rod.

[0010] As a further solution of the present utility model: a clamping seat is clamped at the connection between the central shaft rod of the tripod and the height adjustment rod. A stepped inner wall is provided on the inner side of the clamping seat, and a fastening knob is connected to the open end of the clamping seat.

[0011] As a further solution of the present utility model: a connecting seat is sleeved on the horizontal rod body of the upper L-shaped rod. The bottom end of the connecting seat is rotatably connected with a docking connecting rod. The mobile terminal assembly includes a terminal camera, a camera base and two camera connecting plates. The bottom end of the camera base is connected with a camera connecting plate. The two camera connecting plates are arranged in parallel. The terminal camera is fixedly connected between the two camera connecting plates by bolts. The upper end of the camera base is fixedly connected with a docking seat by bolts, and the docking seat is docked with the docking connecting rod.

[0012] As a further solution of the present utility model: a limiting groove is provided on the bottom end rod body of the docking connecting rod, a limiting slot hole is provided in the docking seat connected to the upper end of the camera base, and a limiting block is clamped at the alignment position of the limiting groove and the limiting slot hole.

[0013] As a further solution of the present utility model: a square positioning block is provided at the top of the inner cavity of the adjustable inner rod. A circular convex block is provided at the center position of the square positioning block. A circular positioning groove is provided at the top end of the rod body of the threaded rod, and the circular positioning groove is clamped on the circular convex block at the center position of the square positioning block.

[0014] As a further solution of the present utility model: a movable through groove is provided on the side wall of one end of the adjustable inner rod located in the lower insertion inner cavity. A toothed disc is rotatably arranged in the lower insertion inner cavity. The toothed disc is meshed and connected with a crown gear. A rotating handle is fixedly connected to the center of the toothed disc, and the rotating end of the rotating handle is located outside the lower L-shaped rod. The position where the movable through groove is opened is directly above the rotating handle.

[0015] As a further solution of the present utility model: a positioning hollow seat is fixedly connected in the lower insertion inner cavity of the lower L-shaped rod. The crown gear is connected to the positioning hollow seat through a groove, and the hollow position opened by the positioning hollow seat can pass through the rod body of the threaded rod.

[0016] As a further solution of the present utility model: a long strip-shaped limiting sliding groove is formed on the side wall of the other side of the adjustable inner rod, and a limiting nut is connected through the upper end side wall of the lower L-shaped frame rod. The installation position of the limiting nut and the opening position of the limiting sliding groove are on the same side, and a limiting bolt is connected to the limiting nut through internal threads.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By providing a moving support assembly composed of an upper L-shaped frame rod and a lower L-shaped frame rod, a U-shaped frame structure can be formed. The moving terminal assembly is supported and connected through the U-shaped frame structure. When the camera is rotated, a larger rotation angle can be obtained, so as to meet large-scale recording and live broadcast sites and enable more comprehensive product recording and live broadcast.

[0019] By providing a lifting adjustment assembly composed of an adjustable inner rod, a threaded rod, and a crown gear between the upper L-shaped frame rod and the lower L-shaped frame rod, the threaded connection between the crown gear and the threaded rod enables the threaded rod to drive the adjustable inner rod to move up and down for adjustment. Furthermore, the distance between the upper L-shaped frame rod and the lower L-shaped frame rod can be adjusted to facilitate the installation of moving terminal assemblies with different heights and fine-tune the installation position of the moving terminal assembly.

[0020] The moving support assembly is installed on the height adjustment assembly. The height adjustment assembly is composed of a tripod and a height adjustment rod. A clamping seat is placed at the connection between the central axis rod of the tripod and the height adjustment rod. The clamping seat is provided with a stepped inner wall that can fit on the rod bodies of the height adjustment rod and the central axis rod. Then, by tightening the fastening knob, the clamping seat firmly clamps the connection between the height adjustment rod and the central axis rod, ensuring the fixation of the adjusted height.

[0021] A long strip-shaped limiting sliding groove is formed on the side wall of the adjustable inner rod, and a limiting nut is connected through the upper end side wall of the lower L-shaped frame rod. A limiting bolt is connected to the limiting nut through internal threads. After inserting the adjustable inner rod into the lower insertion cavity of the lower L-shaped frame rod, by turning the limiting bolt, the front end of the limiting bolt is placed in the limiting sliding groove, thereby limiting the amplitude of the up and down movement adjustment of the adjustable inner rod to prevent the adjustable inner rod from disengaging from the lower L-shaped frame rod due to excessive rotation of the rotating handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0023] Figure 2 is a schematic side view structure diagram of the whole of the present utility model;

[0024] Figure 3 is a schematic structure diagram of the whole of the present utility model in a disassembled state;

[0025] Figure 4 This is a schematic cross-sectional connection structure diagram of the upper L-shaped rod and the adjustable inner rod of the present utility model;

[0026] Figure 5 This is a schematic structure diagram of the threaded rod of the present utility model;

[0027] Figure 6 This is a schematic structure diagram of the crown gear of the present utility model;

[0028] Figure 7 This is a schematic cross-sectional structure diagram of the lower L-shaped rod of the present utility model;

[0029] Figure 8 This is a schematic internal structure diagram of the lower L-shaped rod of the present utility model;

[0030] Figure 9 This is a schematic structure diagram of the clamping seat of the present utility model.

[0031] In the figure: 1. Upper L-shaped rod, 11. Connecting seat, 12. Upper insertion cavity, 13. Docking connecting rod, 14. Limiting groove, 2. Adjustable inner rod, 21. Threaded rod, 22. Circular positioning groove, 23. Square positioning block, 231. Circular convex block, 24. Movable through groove, 25. Limiting sliding groove, 3. Lower L-shaped rod, 31. Lower insertion cavity, 32. Crown gear, 321. Groove, 33. Positioning hollow seat, 34. Tooth disc, 35. Rotating handle, 36. Limiting nut, 37. Limiting bolt, 4. Terminal camera, 41. Camera base, 42. Camera connecting plate, 43. Docking seat, 44. Limiting slot hole, 45. Limiting clamping block, 5. Tripod, 6. Height adjusting rod, 61. Clamping seat, 62. Tightening knob. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Embodiment 1

[0034] As Figures 1 to 7 shown, a liftable U-shaped mobile bracket includes a mobile bracket assembly, the mobile bracket assembly is installed on a height adjustment component, and a mobile terminal component is installed on the mobile bracket assembly;

[0035] The mobile support assembly includes an upper L-shaped rod 1 and a lower L-shaped rod 3, and a lifting and adjusting assembly is connected at the docking part of the upper L-shaped rod 1 and the lower L-shaped rod 3;

[0036] The lifting and adjusting assembly includes an adjustable inner rod 2, a threaded rod 21 and a crown gear 32. Both ends of the adjustable inner rod 2 are movably connected inside the upper L-shaped rod 1 and the lower L-shaped rod 3. The threaded rod 21 is fixedly connected inside the adjustable inner rod 2. The crown gear 32 is rotatably connected inside the lower L-shaped rod 3, and the crown gear 32 is in threaded engagement with the rod body of the threaded rod 21.

[0037] Embodiment Two

[0038] In addition to including all the technical features in Embodiment One, this embodiment further includes:

[0039] An upper insertion inner cavity 12 is provided in the vertical rod body of the upper L-shaped rod 1, and a lower insertion inner cavity 31 is provided in the vertical rod body of the lower L-shaped rod 3. The upper and lower ends of the adjustable inner rod 2 are respectively inserted into the upper insertion inner cavity 12 and the lower insertion inner cavity 31, so as to realize the concealed installation of the adjustable inner rod 2. And when assembling this mobile support, only by placing it in position can the upper L-shaped rod 1 and the lower L-shaped rod 3 form a U-shaped frame structure, and the operation is simple and convenient.

[0040] The height adjustment assembly includes a three-legged support 5 and a height adjustment rod 6. The bottom end of the height adjustment rod 6 is movably inserted into the central shaft rod of the three-legged support 5. A threaded ring is provided at the upper end of the height adjustment rod 6, and a threaded hole is provided in the middle of the horizontal rod body of the lower L-shaped rod 3. By screwing the threaded ring at the upper end of the height adjustment rod 6 into the threaded hole, the assembly connection of the height adjustment assembly and the mobile support assembly can be realized, and by adjusting the extended length of the height adjustment rod 6, the overall height of this mobile support can be adjusted;

[0041] Furthermore, the lower L-shaped rod 3 can also be replaced with a long straight rod, that is, the whole mobile support assembly can be in an L shape, and then the mobile support assembly can be installed on parts such as walls for use.

[0042] A clamping seat 61 is clamped at the connection part of the central shaft rod of the three-legged support 5 and the height adjustment rod 6. A stepped inner wall is provided on the inner side of the clamping seat 61. A fastening knob 62 is connected to the open end of the clamping seat 61. Since the height adjustment rod 6 needs to be inserted into the central shaft rod, the connection part of the central shaft rod and the height adjustment rod 6 is stepped, and the clamping seat 61 is provided with a stepped inner wall that can fit on the rod bodies of the height adjustment rod 6 and the central shaft rod. Then, by tightening the fastening knob 62, the clamping seat 61 can firmly clamp the connection part of the height adjustment rod 6 and the central shaft rod, and the fixed height after adjustment can be ensured.

[0043] Embodiment Three

[0044] In addition to all the technical features in Embodiment 1, this embodiment further includes:

[0045] A connecting seat 11 is sleeved on the horizontal rod body of the upper L-shaped rod 1. The bottom end of the connecting seat 11 is rotatably connected with a docking connecting rod 13. The mobile terminal assembly includes a terminal camera 4, a camera base 41 and two camera connecting plates 42. The bottom end of the camera base 41 is connected with a camera connecting plate 42. The two camera connecting plates 42 are arranged in parallel. The terminal camera 4 is fixedly connected between the two camera connecting plates 42 by bolts. The upper end of the camera base 41 is fixedly connected with a docking seat 43 by bolts. The docking seat 43 is docked with the docking connecting rod 13, which can assemble the mobile terminal assembly and the mobile bracket assembly together. And the docking connecting rod 13 is rotatably connected to the bottom end of the connecting seat 11. Therefore, the angle of the terminal camera 4 can be adjusted in multiple directions to meet different recording and live broadcast requirements.

[0046] Furthermore, the connecting seat 11 can be adjusted in position on the horizontal rod body of the upper L-shaped rod 1 to ensure that the center of gravity of the connected mobile terminal assembly is consistent with the center of gravity of the height adjustment assembly, thereby ensuring the overall structural stability of the mobile bracket.

[0047] A limiting groove 14 is opened on the bottom rod body of the docking connecting rod 13. A limiting slot hole 44 is opened on the docking seat 43 connected to the upper end of the camera base 41. A limiting block 45 is placed at the alignment position of the limiting groove 14 and the limiting slot hole 44, which can limit and fix the docking part of the docking seat 43 and the docking connecting rod 13 to ensure the firmness of the docking part. And there is no need to adopt auxiliary fixing measures such as screwing, which is convenient for disassembly and assembly.

[0048] Embodiment 4

[0049] In addition to all the technical features in Embodiment 1, this embodiment further includes:

[0050] A square positioning block 23 is arranged at the top of the inner cavity of the adjustable inner rod 2. A circular convex block 231 is arranged at the center position of the square positioning block. A circular positioning groove 22 is opened at the top end of the rod body of the threaded rod 21. And the circular positioning groove 22 is placed on the circular convex block 231 at the center position of the square positioning block 23. When the threaded rod 21 is vertically placed in the inner cavity of the adjustable inner rod 2, under the action of the gravity of the adjustable inner rod 2 itself, the circular convex block 231 at the center position of the square positioning block 23 can be placed in the circular positioning groove 22 in alignment, that is, a fixed connection between the threaded rod 21 and the adjustable inner rod 2 can be formed.

[0051] One end side wall of the adjustable inner rod 2 located inside the lower insertion inner cavity 31 is provided with a movable through slot 24. A toothed disk 34 is rotatably arranged inside the lower insertion inner cavity 31. The toothed disk 34 is meshed and connected with the crown gear 32. A rotating handle 35 is fixedly connected to the center of the toothed disk 34, and the rotating end of the rotating handle 35 is located outside the lower L-shaped frame rod 3. The position where the movable through slot 24 is opened is directly above the rotating handle 35, so as to drive the toothed disk 34 to rotate through the rotating handle 35, and then drive the crown gear 32 to rotate. When the installation position of the crown gear 32 remains unchanged, the threaded connection between the crown gear 32 and the threaded rod 21 can enable the threaded rod 21 to drive the adjustable inner rod 2 to move up and down for adjustment. Furthermore, the distance between the upper L-shaped frame rod 1 and the lower L-shaped frame rod 3 can be adjusted, so as to facilitate the installation of mobile terminal components with different heights and facilitate the fine adjustment of the installation position of the mobile terminal components. At the same time, when the adjustable inner rod 2 moves up and down, the opened movable through slot 24 can pass through the position of the rotating handle 35 without causing movement interference to the rotating handle 35.

[0052] A positioning hollow seat 33 is fixedly connected inside the lower insertion inner cavity 31 of the lower L-shaped frame rod 3. The crown gear 32 is connected to the positioning hollow seat 33 through a groove 321, and the hollow position opened by the positioning hollow seat 33 can pass through the rod body of the threaded rod 21, so as to keep the installation position of the crown gear 32 fixed, that is, the crown gear 32 can only rotate inside the lower insertion inner cavity 31 and cannot be adjusted in height position inside the lower insertion inner cavity 31. Furthermore, the threaded rod 21 can be driven to drive the adjustable inner rod 2 to move up and down for adjustment.

[0053] A long strip-shaped limiting sliding groove 25 is opened on the other side wall of the adjustable inner rod 2. A limiting nut 36 is penetrated and connected to the upper end side wall of the lower L-shaped frame rod 3. The installation position of the limiting nut 36 and the opening position of the limiting sliding groove 25 are on the same side, and a limiting bolt 37 is threadedly connected inside the limiting nut 36. After the adjustable inner rod 2 is inserted into the lower insertion inner cavity 31 of the lower L-shaped frame rod 3, by screwing the limiting bolt 37, the front end of the limiting bolt 37 is placed in the limiting sliding groove 25, and then the amplitude of the adjustable inner rod 2 that can move up and down for adjustment can be limited, so as to prevent the adjustable inner rod 2 from detaching from the lower L-shaped frame rod 3 due to excessive rotation of the rotating handle 35.

[0054] Working principle: First, vertically insert the threaded rod 21 into the lower insertion cavity 31. Rotate the handle 35 to drive the gear disk 34 to rotate, and then drive the crown gear 32 to rotate, so that the threaded rod 21 is threadedly connected to the crown gear 32. Then, insert the adjustable inner rod 2 into the insertion cavity 31, and place the circular bump 231 on the square positioning block 23 in the circular positioning groove 22, that is, a fixed connection between the threaded rod 21 and the adjustable inner rod 2 can be formed. After inserting the adjustable inner rod 2 into the lower insertion cavity 31 of the lower L-shaped frame rod 3, screw the limit bolt 37 so that the front end of the limit bolt 37 is placed in the limit sliding groove 25, and then the amplitude of the up and down movement adjustment of the adjustable inner rod 2 can be limited to prevent the adjustable inner rod 2 from detaching from the lower L-shaped frame rod 3 due to excessive rotation of the handle 35. By screwing the thread ring at the upper end of the height adjustment rod 6 into the threaded hole, the assembly connection between the height adjustment component and the moving support component can be realized, and by adjusting the extended length of the height adjustment rod 6, the overall height of the moving support can be adjusted. The terminal camera 4 is fixedly connected between two camera connection plates 42 by bolts. A docking seat 43 is fixedly connected to the upper end of the camera base 41 by bolts, and the docking seat 43 is docked with the docking link 13, so that the mobile terminal component and the moving support component can be assembled together. When in use, rotate the handle 35 to drive the gear disk 34 to rotate, and then drive the crown gear 32 to rotate. With the installation position of the crown gear 32 remaining unchanged, the threaded connection between the crown gear 32 and the threaded rod 21 can drive the threaded rod 21 to drive the adjustable inner rod 2 to move up and down, so that the distance between the upper L-shaped frame rod 1 and the lower L-shaped frame rod 3 can be adjusted, which is convenient for installing mobile terminal components of different heights and for fine-tuning the installation position of the mobile terminal component. At the same time, when the adjustable inner rod 2 moves up and down, the opened movable through groove 24 can pass through the position of the handle 35 without causing movement interference to the handle 35.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0056] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liftable U-shaped mobile support, comprising a mobile support assembly, characterized in that: The mobile bracket assembly is installed on the height adjustment assembly, and the mobile terminal assembly is installed on the mobile bracket assembly; The mobile bracket assembly comprises an upper L-shaped frame rod (1) and a lower L-shaped frame rod (3), and a lifting and lowering adjustment assembly is connected to the joint between the upper L-shaped frame rod (1) and the lower L-shaped frame rod (3); The lifting and lowering adjustment assembly comprises an adjustable inner rod (2), a threaded rod (21) and a crown gear (32); the two ends of the adjustable inner rod (2) are movably connected in the upper L-shaped frame rod (1) and the lower L-shaped frame rod (3); the threaded rod (21) is fixedly connected in the adjustable inner rod (2); the crown gear (32) is rotatably connected in the lower L-shaped frame rod (3); and the crown gear (32) is threadedly engaged with the rod body of the threaded rod (21).

2. The liftable U-shaped mobile bracket according to claim 1 is characterized in that: The vertical rod body of the upper L-shaped frame rod (1) is provided with an upper insertion cavity (12), the vertical rod body of the lower L-shaped frame rod (3) is provided with a lower insertion cavity (31), and the upper and lower ends of the adjustable inner rod (2) are respectively inserted into the upper insertion cavity (12) and the lower insertion cavity (31).

3. The liftable U-shaped mobile bracket according to claim 1 is characterized in that: The height adjustment assembly comprises a tripod (5) and a height adjustment rod (6), the bottom end of the height adjustment rod (6) is movably inserted on the central axis of the tripod (5), the upper end of the height adjustment rod (6) is provided with a threaded ring, and the middle part of the horizontal rod of the lower L-shaped frame rod (3) is provided with a threaded hole.

4. The liftable U-shaped mobile bracket according to claim 3 is characterized in that: A clamping seat (61) is clamped at the connection between the central axis of the tripod stand (5) and the height adjustment rod (6), a stepped inner wall is provided on the inner side of the clamping seat (61), and a tightening knob (62) is connected to the open end of the clamping seat (61).

5. The liftable U-shaped mobile bracket according to claim 1 is characterized in that: A connecting seat (11) is sleeved on the horizontal rod body of the upper L-shaped frame rod (1), and the bottom end of the connecting seat (11) is rotatably connected to a docking connecting rod (13). The mobile terminal assembly comprises a terminal camera (4), a camera base (41) and two camera connecting plates (42). The bottom end of the camera base (41) is connected to a camera connecting plate (42), and the two camera connecting plates (42) are arranged in parallel. The terminal camera (4) is fixedly connected between the two camera connecting plates (42) by bolts. The upper end of the camera base (41) is fixedly connected to a docking seat (43) by bolts, and the docking seat (43) is docked with the docking connecting rod (13).

6. The liftable U-shaped mobile bracket according to claim 5, characterized in that: A limiting groove (14) is provided on the bottom rod body of the docking connecting rod (13), a limiting slot hole (44) is provided on the docking seat (43) connected to the upper end of the camera base (41), and a limiting clamping block (45) is clamped at the corresponding position of the limiting groove (14) and the limiting slot hole (44).

7. The liftable U-shaped mobile bracket according to claim 1, characterized in that: A square positioning block (23) is arranged at the top of the inner cavity of the adjustable inner rod (2), a circular protrusion (231) is arranged at the center of the square positioning block, a circular positioning groove (22) is arranged at the top of the rod body of the threaded rod (21), and the circular positioning groove (22) is clamped on the circular protrusion (231) at the center of the square positioning block (23).

8. The liftable U-shaped mobile bracket according to claim 7, characterized in that: A movable through slot (24) is provided on a side wall of one end of the adjustable inner rod (2) located in the lower insertion cavity (31); a toothed disc (34) is rotatably arranged in the lower insertion cavity (31); the toothed disc (34) is meshingly connected to the crown gear (32); a rotating handle (35) is fixedly connected to the center of the toothed disc (34); a rotating end of the rotating handle (35) is located outside the lower L-shaped frame rod (3); and the opening position of the movable through slot (24) is located directly above the rotating handle (35).

9. The liftable U-shaped mobile bracket according to claim 8, characterized in that: A positioning hollow seat (33) is fixedly connected in the lower insertion cavity (31) of the lower L-shaped frame rod (3), the crown gear (32) is connected to the positioning hollow seat (33) via a groove (321), and the hollow position of the positioning hollow seat (33) can pass through the rod body of the threaded rod (21).

10. The liftable U-shaped mobile bracket according to claim 8, characterized in that: A long strip-shaped limiting sliding groove (25) is provided on the other side wall of the adjustable inner rod (2), and a limiting nut (36) is connected to the upper end side wall of the lower L-shaped frame rod (3). The installation position of the limiting nut (36) is located on the same side as the opening position of the limiting sliding groove (25), and the limiting nut (36) is internally threadedly connected to a limiting bolt (37).

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