Telescopic structure for photographic equipment
By using a four-level nested square tube structure and a multi-directional adjustment mechanism, the problems of insufficient extended length and excessive length when storing photographic equipment have been solved, achieving an ideal shooting angle from high places and convenient transportation, thus improving the flexibility and reliability of photographic equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING TIANYINGTONG TECH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-06-23
Smart Images
Figure CN224397534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photographic equipment, and in particular to a telescopic structure for shooting with photographic equipment. Background Technology
[0002] In the field of photographic equipment, telescopic structures are key components for adjusting the height and position of shooting equipment, and are widely used in camera brackets, lighting stands, and other equipment. Currently, most telescopic structures on the market use a nested design of two-stage or three-stage tubes, which has significant shortcomings in practical use.
[0003] On the one hand, the unfolding length of existing two- or three-level telescopic structures is greatly limited. Due to the limitations of the nesting levels, their maximum unfolding length is insufficient. In scenarios such as film and television shooting and advertising location scouting, when it is necessary to shoot from above at high places such as the top of a stage or the exterior of a building, the limited extension height will cause the camera's field of view to be obstructed by obstacles, making it impossible to obtain the ideal picture effect.
[0004] On the other hand, the existing structure is too long in its retracted state. This also means that handling requires two people or specialized tools, increasing the difficulty of operation. During transportation, the excessive length cannot fit into ordinary vehicles, requiring customized transport boxes or specialized trucks, thus increasing transportation costs.
[0005] Based on this, we propose a telescopic structure for shooting with photographic equipment. Utility Model Content
[0006] To address the technical problems of insufficient extended length and excessive length when folded in existing telescopic structures for photographic equipment, this utility model provides a telescopic structure for shooting photographic equipment.
[0007] This utility model is achieved by the following technical solution: a telescopic structure for shooting with photographic equipment, including a telescopic structure body, the telescopic structure body including a multi-directional adjustment mechanism, a multi-stage telescopic square tube mechanism installed above the multi-directional adjustment mechanism, a cylinder installed inside the multi-stage telescopic square tube mechanism, and a sliding mechanism connected to the output end of the cylinder.
[0008] The multi-directional adjustment mechanism includes a rotating mounting base, a support bracket rotatably connected above the rotating mounting base, the support bracket being U-shaped, a support frame movably hinged to the inner side of the support bracket via a rotating shaft, and a primary square tube fixedly connected to the upper inner surface of the support frame.
[0009] The multi-stage telescopic square tube mechanism includes a primary square tube, a secondary square tube, a tertiary square tube, and a quaternary square tube. The dimensions of the primary, secondary, tertiary, and quaternary square tubes decrease sequentially. The primary, secondary, tertiary, and quaternary square tubes are nested sequentially along the axial direction to form a telescopic insertion structure that can slide relative to each other. The secondary square tube slides into the inner cavity of the primary square tube, the tertiary square tube slides into the inner cavity of the secondary square tube, and the quaternary square tube slides into the inner cavity of the tertiary square tube. The axial telescopic adjustment is achieved through sliding cooperation between adjacent square tubes.
[0010] The cylinder is installed inside the hollow cavity of the first-stage square tube, the second-stage square tube, the third-stage square tube, and the fourth-stage square tube. The output end of the cylinder is fixedly connected to the connecting bracket on the next-stage square tube, and the bottom end of the cylinder is fixedly connected to the inner wall of the upper-stage square tube.
[0011] The sliding mechanism includes a connecting bracket, with a V-shaped right-angle protrusion connected to the outer side of the connecting bracket. A V-grooved wheel is rotatably connected to the outer side of the V-shaped right-angle protrusion, and four sets of V-grooved wheels are provided. The sliding mechanism is fixedly connected to the top ends of the secondary, tertiary, and quaternary square tubes. A rolling mechanism is installed at the connection point between each level of square tube, assisting in the extension and retraction of the lower-level square tube.
[0012] The rolling mechanism includes a fixed frame, which is fixedly fitted onto the surface of each stage of the multi-stage telescopic square tube mechanism. The fixed frame is U-shaped, with sidewall rollers rotatably mounted on the U-shaped sidewalls. A fixed bracket is fixedly connected to the bottom of the U-shaped fixed frame, and a bottom wall roller is rotatably connected to the inner side of the fixed bracket. The fixed frame is installed at the end of the upper-stage square tube, and the bottom wall roller overlaps the bottom end of the lower-stage square tube, slidingly inserting into the interior of the upper-stage square tube in cooperation with the lower-stage square tube.
[0013] As a further optimization of this utility model, the multi-directional adjustment mechanism includes a rotating mounting base, a U-shaped receiving bracket, a rotating shaft, and a support frame. The rotating mounting base can rotate horizontally, and the receiving bracket is hinged to the support frame via the rotating shaft, allowing the primary square tube to swing up and down. This design enables the telescopic structure to be adjusted at multiple angles in the horizontal (360°) and vertical directions, meeting the angle requirements of different shooting scenarios.
[0014] As a further optimization of this utility model, the cylinder is installed in the hollow cavity of the first-stage, second-stage, third-stage, and fourth-stage square tubes, with its bottom end fixed to the inner wall of the previous-stage square tube and its output end fixed to the connecting bracket of the next-stage square tube. When the cylinder is started, the extension and retraction of the piston rod pushes the next-stage square tube to move axially, realizing the synchronous extension and retraction of the multi-stage square tubes.
[0015] As a further optimization of this utility model, primary, secondary, tertiary, and quaternary square tubes are nested along the axial direction, with their dimensions decreasing sequentially. The secondary square tube is slidably inserted into the primary square tube, the tertiary square tube is inserted into the secondary square tube, and the quaternary square tube is inserted into the tertiary square tube. Under the push of a cylinder, the adjacent square tubes extend and retract through sliding cooperation, forming a four-stage telescopic structure. When extended, the total length can reach 6247mm, and when retracted, it is shortened to within 2400mm.
[0016] As a further optimization of this utility model, the sliding mechanism is fixed at the top of the secondary, tertiary, and quaternary square tubes, and consists of a connecting bracket, a V-shaped right-angle protrusion, and four sets of V-grooved wheels. The V-grooved wheels cooperate with the V-shaped protrusions on the inner side of the square tubes to limit the movement trajectory of each level of the square tubes, ensuring stability during extension and retraction and preventing radial swaying.
[0017] As a further optimization of this utility model, a rolling mechanism is installed at the connection of each level of square tube. Its fixed frame is sleeved on the end of the upper level square tube, and the side wall roller and bottom wall roller contact the side wall and bottom end of the lower level square tube, respectively. When the square tube extends or retracts, the side wall roller and bottom wall roller reduce resistance through rolling friction, making the extension and retraction process smoother and reducing wear on the square tube.
[0018] As a further optimization of this utility model, the cylinder is activated, and the secondary square tube extends from the primary square tube under power. Simultaneously, the cylinder's output pulls the tertiary and quaternary square tubes sequentially, with rollers of the rolling mechanism assisting the square tubes in sliding until the set height is reached. At this point, photographic equipment can be mounted on the suspension base at the top of the quaternary square tube, and the shooting angle can be adjusted via a multi-directional adjustment mechanism.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] 1. This utility model utilizes a multi-stage telescopic square tube mechanism with four nested square tubes to form a four-stage telescopic structure. When unfolded, the total length reaches 6247mm, effectively solving the problem of insufficient unfolded length in existing telescopic structures. In scenarios requiring overhead shots, such as film and television production or advertising, it prevents obstacles from obstructing the camera's view, allowing the photographer to obtain the desired visual effect.
[0021] 2. When stored, the telescopic structure of this utility model allows all square tubes to be nested inside the primary square tube, reducing the overall length to below 2400mm, thus solving the problem of excessive length in existing structures during storage. It can be operated by one person during handling, reducing operational difficulty, and can be loaded into ordinary vehicles during transportation, eliminating the need for customized transport boxes or special trucks, thereby reducing transportation costs.
[0022] 3. This utility model, by setting a multi-directional adjustment mechanism, includes a rotating mounting base, a receiving bracket, a rotating shaft, and a support frame. The rotating mounting base can rotate horizontally, and the receiving bracket is hinged to the support frame through the rotating shaft, allowing the first-stage square tube to swing up and down. This realizes multi-angle adjustment of the telescopic structure in the horizontal 360° and vertical directions, which can meet the angle requirements of different shooting scenarios and improve the flexibility and applicability of shooting.
[0023] 4. This utility model, by setting up a sliding mechanism and a rolling mechanism, has a V-groove wheel of the sliding mechanism that cooperates with the V-shaped protrusion on the inner side of the square tube to limit the movement trajectory of each level of the square tube, ensuring stability during extension and contraction and avoiding radial swaying; the side wall rollers and bottom wall rollers of the rolling mechanism reduce resistance through rolling friction, making the extension and contraction process smoother, while reducing the wear of the square tube and improving the service life and reliability of the extension structure. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 This utility model Figure 1 Schematic diagram of the storage state of the middle structure;
[0026] Figure 3 This is a schematic diagram of the connection structure of the multi-directional adjustment mechanism of this utility model;
[0027] Figure 4 This utility model Figure 1 Perspective diagram of the internal structure of the central structure;
[0028] Figure 5 This utility model Figure 4 Schematic diagram of the middle section of the structure;
[0029] Figure 6 This utility model Figure 5 Schematic diagram of the middle section of the structure;
[0030] Figure 7 This is a schematic diagram of the four-stage square tube connection structure of this utility model;
[0031] Figure 8 This utility model Figure 7 Schematic diagram of the middle section of the structure;
[0032] Figure 9 This is a schematic diagram of the connection of the rolling mechanism of this utility model.
[0033] Explanation of key symbols:
[0034] 1. Telescopic structure main body; 2. Multi-directional adjustment mechanism; 21. Rotating mounting base; 22. Support bracket; 23. Rotating shaft; 24. Support frame; 3. Multi-stage telescopic square tube mechanism; 31. Primary square tube; 32. Secondary square tube; 33. Tertiary square tube; 34. Quaternary square tube; 4. Cylinder; 5. Sliding mechanism; 51. Connecting bracket; 52. V-shaped right-angle protrusion; 53. V-groove wheel; 6. Rolling mechanism; 61. Fixed frame; 62. Side wall roller; 63. Fixed bracket; 64. Bottom wall roller. Detailed Implementation
[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0036] Example 1:
[0037] Please combine Figures 1-9 This embodiment proposes a telescopic structure for shooting with photographic equipment, including a telescopic structure body 1, a multi-directional adjustment mechanism 2, a multi-stage telescopic square tube mechanism 3 installed above the multi-directional adjustment mechanism 2, a cylinder 4 installed inside the multi-stage telescopic square tube mechanism 3, and a sliding mechanism 5 connected to the output end of the cylinder 4.
[0038] The multi-directional adjustment mechanism 2 includes a rotating mounting base 21, and a support bracket 22 is rotatably connected above the rotating mounting base 21. The support bracket 22 is U-shaped, and a support frame 24 is movably hinged to the inner side of the support bracket 22 through a rotating shaft 23. A primary square tube 31 is fixedly connected to the upper inner surface of the support frame 24.
[0039] The specific technical solution includes a multi-directional adjustment mechanism 2 comprising a rotating mounting base 21, a U-shaped receiving bracket 22, a rotating shaft 23, and a support frame 24. The rotating mounting base 21 can rotate horizontally, and the receiving bracket 22 is hinged to the support frame 24 via the rotating shaft 23, allowing the primary square tube 31 to swing up and down. This design enables the telescopic structure to be adjusted at multiple angles in the horizontal (360°) and vertical directions, meeting the angle requirements of different shooting scenarios.
[0040] The multi-stage telescopic square tube mechanism 3 includes a first-stage square tube 31, a second-stage square tube 32, a third-stage square tube 33, and a fourth-stage square tube 34; the dimensions of the first-stage square tube 31, the second-stage square tube 32, the third-stage square tube 33, and the fourth-stage square tube 34 decrease sequentially, and the first-stage square tube 31, the second-stage square tube 32, the third-stage square tube 33, and the fourth-stage square tube 34 are nested sequentially along the axial direction to form a telescopic plug-in structure that can slide relatively.
[0041] Among them, the secondary square tube 32 is slidably inserted into the inner cavity of the primary square tube 31, the tertiary square tube 33 is slidably inserted into the inner cavity of the secondary square tube 32, and the quaternary square tube 34 is slidably inserted into the inner cavity of the tertiary square tube 33. The axial expansion and contraction adjustment between each adjacent square tube is achieved through sliding cooperation.
[0042] It should be noted that cylinder 4 is installed inside the hollow cavities of the first-stage square tube 31, the second-stage square tube 32, the third-stage square tube 33, and the fourth-stage square tube 34. The output end of cylinder 4 is fixedly connected to the connecting bracket 51 on the next-stage square tube, and the bottom end of cylinder 4 is fixedly connected to the inner wall of the tube of the previous-stage square tube.
[0043] In the specific technical solution, cylinder 4 is installed in the hollow cavity of the first-stage square tube 31, the second-stage square tube 32, the third-stage square tube 33, and the fourth-stage square tube 34. Its bottom end is fixed to the inner wall of the previous-stage square tube, and its output end is fixed to the connecting bracket 51 of the next-stage square tube. When cylinder 4 is started, the extension and retraction of the piston rod pushes the next-stage square tube to move axially, realizing the synchronous extension and retraction of the multi-stage square tubes.
[0044] More specifically, the first-level square tube 31, the second-level square tube 32, the third-level square tube 33, and the fourth-level square tube 34 are nested along the axial direction, with their dimensions decreasing sequentially. The second-level square tube 32 is slidably inserted into the first-level square tube 31, the third-level square tube 33 is inserted into the second-level square tube 32, and the fourth-level square tube 34 is inserted into the third-level square tube 33. Under the push of the cylinder 4, the adjacent square tubes achieve extension and retraction through sliding engagement, forming a four-level telescopic structure. When extended, the total length can reach 6247mm, and when retracted, it is shortened to within 2400mm.
[0045] The sliding mechanism 5 includes a connecting bracket 51, a V-shaped right-angle protrusion 52 connected to the outside of the connecting bracket 51, and a V-groove wheel 53 rotatably connected to the outside of the V-shaped right-angle protrusion 52, with four sets of V-groove wheels 53.
[0046] A further technical solution involves a sliding mechanism 5 fixed to the top of the secondary square tube 32, the tertiary square tube 33, and the quaternary square tube 34. This mechanism consists of a connecting bracket 51, a V-shaped right-angle protrusion 52, and four sets of V-grooved wheels 53. The V-grooved wheels 53 engage with the V-shaped protrusions on the inner side of the square tubes, limiting the movement trajectory of each level of the square tube, ensuring stability during extension and retraction, and preventing radial swaying.
[0047] It should be noted that the sliding mechanism 5 is fixedly connected to the top of the secondary square tube 32, the tertiary square tube 33 and the quaternary square tube 34.
[0048] A rolling mechanism 6 is installed at the connection point of each level of square tube. The rolling mechanism 6 is installed at the connection point between the end of the upper level square tube and the lower level square tube to assist the expansion and contraction of the lower level square tube.
[0049] The rolling mechanism 6 includes a fixed frame 61 which is fixedly sleeved on the surfaces of the square tubes at all levels of the multi-stage telescopic square tube mechanism 3. The fixed frame 61 is in a "mouth" shape. Side wall rollers 62 are rotatably installed on the side walls of the fixed frame 61 in the "mouth" shape, and a fixed support 63 is fixedly connected to the bottom of the fixed frame 61 in the "mouth" shape. A bottom wall roller 64 is rotatably connected to the inner side of the fixed support 63.
[0050] The fixed frame 61 is installed at the end of the upper-stage square tube, and the bottom wall roller 64 abuts against the bottom end of the lower-stage square tube. The bottom wall roller 64 cooperates with the lower-stage square tube to slide and insert into the interior of the upper-stage square tube.
[0051] For the specific technical solution, the rolling mechanism 6 is installed at the connection of the square tubes at all levels. Its fixed frame 61 is sleeved at the end of the upper-stage square tube, and the side wall roller 62 and the bottom wall roller 64 are respectively in contact with the side wall and the bottom end of the lower-stage square tube. When the square tubes are telescoping, the side wall roller 62 and the bottom wall roller 64 reduce the resistance through rolling friction, making the telescoping process smoother and at the same time reducing the wear of the square tubes.
[0052] It should be noted that:
[0053] Deployment process
[0054] Start the cylinder 4. The secondary square tube 32 extends out of the primary square tube 31 under the power drive. At the same time, the tertiary square tube 33 and the quaternary square tube 34 are pulled to be deployed in sequence through the output end of the cylinder 4. The rollers of the rolling mechanism 6 assist the sliding of the square tubes until the set height is reached. At this time, the hanging base at the top of the quaternary square tube 34 can install photographic equipment, and the shooting angle can be adjusted through the multi-directional adjustment mechanism 2.
[0055] Storage process
[0056] Drive the cylinder 4 in the reverse direction. The quaternary square tube 34 first retracts into the tertiary square tube 33, and then the tertiary square tube 33 and the secondary square tube 32 retract in sequence. Finally, all the square tubes are nested in the primary square tube 31, and the overall length is shortened to less than 2400 mm, which is convenient for handling and transportation.
[0057] Working principle of the telescopic structure of this patent
[0058] I. Overall structure driving principle
[0059] Power source and transmission
[0060] The cylinder 4 is installed in the hollow cavities of the primary square tube 31, the secondary square tube 32, the tertiary square tube 33 and the quaternary square tube 34. Its bottom end is fixed to the inner wall of the upper-stage square tube, and the output end is fixed to the connection bracket 51 of the lower-stage square tube. When the cylinder 4 is started, the lower-stage square tube is pushed to move axially through the telescoping of the piston rod, realizing the synchronous telescoping of the multi-stage square tubes.
[0061] Multi-level square tube nested expansion mechanism
[0062] The first-level square tube 31, the second-level square tube 32, the third-level square tube 33, and the fourth-level square tube 34 are nested along the axial direction, with their dimensions decreasing sequentially. The second-level square tube 32 is slidably inserted into the first-level square tube 31, the third-level square tube 33 is inserted into the second-level square tube 32, and the fourth-level square tube 34 is inserted into the third-level square tube 33. Under the push of the cylinder 4, the adjacent square tubes expand and contract through sliding cooperation, forming a four-level telescopic structure. When expanded, the total length can reach 6247mm, and when retracted, it is shortened to within 2400mm.
[0063] II. Synergistic effect of sliding and rolling mechanisms
[0064] Guiding function of sliding mechanism 5
[0065] The sliding mechanism 5 is fixed to the top of the secondary square tube 32, the tertiary square tube 33, and the quaternary square tube 34, and consists of a connecting bracket 51, a V-shaped right-angle protrusion 52, and four sets of V-grooved wheels 53. The V-grooved wheels 53 cooperate with the V-shaped protrusions on the inner side of the square tubes to limit the movement trajectory of each level of square tube, ensuring stability during extension and retraction and preventing radial swaying.
[0066] The auxiliary telescopic function of the rolling mechanism 6
[0067] A rolling mechanism 6 is installed at the connection of each level of square tube. Its fixed frame 61 is sleeved on the end of the upper level square tube, and the side wall roller 62 and bottom wall roller 64 contact the side wall and bottom end of the lower level square tube, respectively. When the square tube expands or contracts, the side wall roller 62 and bottom wall roller 64 reduce resistance through rolling friction, making the expansion and contraction process smoother and reducing the wear of the square tube.
[0068] III. Angle Adjustment Principle of Multi-directional Adjustment Mechanism
[0069] The multi-directional adjustment mechanism 2 includes a rotating mounting base 21, a U-shaped receiving bracket 22, a rotating shaft 23, and a support frame 24. The rotating mounting base 21 can rotate horizontally, and the receiving bracket 22 is hinged to the support frame 24 via the rotating shaft 23, allowing the primary square tube 31 to swing up and down. This design enables the telescopic structure to be adjusted at multiple angles in the horizontal 360° and vertical directions, meeting the angle requirements of different shooting scenarios.
[0070] IV. Storage and Unfolding Workflow
[0071] Unfolding process
[0072] When cylinder 4 is activated, the secondary square tube 32 extends from the primary square tube 31 under power. Simultaneously, the output end of cylinder 4 pulls the tertiary square tube 33 and the quaternary square tube 34 to unfold sequentially. The rollers of the rolling mechanism 6 assist the square tubes in sliding until the set height is reached. At this point, photographic equipment can be mounted on the suspension base at the top of the quaternary square tube 34, and the shooting angle can be adjusted through the multi-directional adjustment mechanism 2.
[0073] Storage process
[0074] The reverse-drive cylinder 4 first retracts the fourth-stage square tube 34 into the third-stage square tube 33, and then the third-stage square tube 33 and the second-stage square tube 32 retract in sequence. Finally, all the square tubes are nested into the first-stage square tube 31, and the overall length is shortened to less than 2400mm, which is convenient for handling and transportation.
[0075] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A telescopic structure for shooting with photographic equipment, comprising a telescopic structure body (1), characterized in that, The telescopic structure body (1) includes a multi-directional adjustment mechanism (2). Above the multi-directional adjustment mechanism (2), a multi-stage telescopic square pipe mechanism (3) is installed. Inside the multi-stage telescopic square pipe mechanism (3), a cylinder (4) is installed. The output end of the cylinder (4) is connected to a sliding mechanism (5). The multi-stage telescopic square pipe mechanism (3) includes a first-stage square pipe (31), a second-stage square pipe (32), a third-stage square pipe (33), and a fourth-stage square pipe (34). The sizes of the first-stage square pipe (31), the second-stage square pipe (32), the third-stage square pipe (33), and the fourth-stage square pipe (34) decrease in sequence. The first-stage square pipe (31), the second-stage square pipe (32), the third-stage square pipe (33), and the fourth-stage square pipe (34) are nested axially in sequence to form a telescopic plug-in structure that can slide relative to each other. Among them, the second-stage square pipe (32) is slidably inserted into the inner cavity of the first-stage square pipe (31). The third-stage square pipe (33) is slidably inserted into the inner cavity of the second-stage square pipe (32). The fourth-stage square pipe (34) is slidably inserted into the inner cavity of the third-stage square pipe (33). Axial telescopic adjustment is achieved through sliding配合 between adjacent square pipes.
2. The telescopic structure for shooting with photographic equipment as described in claim 1, characterized in that, The multi-directional adjustment mechanism (2) includes a rotating mounting base (21). Above the rotating mounting base (21), a receiving bracket (22) is rotatably connected. The receiving bracket (22) is U-shaped. Inside the receiving bracket (22), a support frame (24) is movably hinged through a rotating axis (23). On the inner upper surface of the support frame (24), the first-stage square pipe (31) is fixedly connected.
3. The telescopic structure for shooting with photographic equipment as described in claim 1, characterized in that, The sliding mechanism (5) includes a connecting bracket (51). On the outer side of the connecting bracket (51), a V-shaped right-angle convex block (52) is connected. On the outer side of the V-shaped right-angle convex block (52), a V-groove wheel (53) is rotatably connected. Four groups of V-groove wheels (53) are provided.
4. The telescopic structure for shooting with photographic equipment as described in claim 1, characterized in that, The sliding mechanism (5) is fixedly connected to the tops of the second-stage square pipe (32), the third-stage square pipe (33), and the fourth-stage square pipe (34).
5. The telescopic structure for shooting with photographic equipment as described in claim 1, characterized in that, The cylinder (4) is installed inside the hollow cavities of the first-stage square pipe (31), the second-stage square pipe (32), the third-stage square pipe (33), and the fourth-stage square pipe (34). The output end of the cylinder (4) is fixedly connected to the connecting bracket (51) on the next-stage square pipe. The bottom end of the cylinder (4) is fixedly connected to the inner wall of the pipe body of the previous-stage square pipe.
6. The telescopic structure for shooting with photographic equipment as described in claim 1, characterized in that, A rolling mechanism (6) is installed at the connection of each stage of the square pipe. The rolling mechanism (6) is installed at the connection of the end of the previous-stage square pipe and the next-stage square pipe to assist the telescoping of the next-stage square pipe.
7. The telescopic structure for shooting with photographic equipment as described in claim 6, characterized in that, The rolling mechanism (6) includes a fixed frame (61). The fixed frame (61) is fixedly sleeved on the surfaces of each stage of the square pipes of the multi-stage telescopic square pipe mechanism (3). The fixed frame (61) is square-shaped. On the side walls of the square-shaped fixed frame (61), side wall rollers (62) are rotatably installed. At the bottom of the square-shaped fixed frame (61), a fixed bracket (63) is fixedly connected. Inside the fixed bracket (63), a bottom wall roller (64) is rotatably connected.
8. The telescopic structure for shooting with photographic equipment as described in claim 7, characterized in that, The fixed frame (61) is installed at the end of the upper-level square tube, and the bottom wall roller (64) overlaps the bottom end of the lower-level square tube. The bottom wall roller (64) slides into the interior of the upper-level square tube in cooperation with the lower-level square tube.