A horizontal rod length adjustable disc buckle type support frame

Abstract

The application provides a disc buckle type support frame with adjustable horizontal rod length, and relates to the field of building construction. The support frame comprises vertical rods and horizontal rods. A plurality of horizontal rods are arranged between two vertical rods. The horizontal rods are arranged at intervals in the vertical direction. The horizontal rods and the vertical rods are connected through connecting discs. The horizontal rod comprises a fixed part and a movable part. The fixed part is in the shape of an open-ended cylinder. The movable part is arranged in the fixed part. A sliding groove is arranged on the top of the fixed part. A threaded sleeve is arranged in the fixed part. The threaded sleeve is connected with the movable part through threads. A threaded hole is arranged on the top of the threaded sleeve. The threaded hole faces the sliding groove. A locking bolt is arranged on the outer wall of the fixed part. The tail of the locking bolt is attached to the fixed part. The head of the locking bolt is adapted to be screwed into the threaded hole through the sliding groove. The application has the effect of quickly, labor-saving and high-precision length adjustment of the horizontal rod.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to a disc-lock support frame with adjustable horizontal bar length. Background Technology

[0002] Scaffolding (i.e., support frame) is a working platform erected to ensure the smooth progress of various construction processes, including a disc-lock type support frame. A disc-lock type support frame mainly consists of uprights, horizontal bars, diagonal braces, adjustable bases, and adjustable supports. The adjustable bases are located at the bottom of the uprights, and the adjustable supports are located at the top of the uprights. Multiple circular connecting discs are welded at intervals on the uprights, and the horizontal and diagonal braces are fixed between two uprights through these connecting discs.

[0003] When the spacing between uprights is not modular, adjustable horizontal bars need to be installed at the non-modular locations. Chinese patent document CN217711739U discloses a telescopic disc-lock frame horizontal bar reinforcement device, specifically revealing a hollow tube and adjusting knob structure. The adjusting knob can rotate freely, and its internal thread structure allows the lead screw to freely extend and retract within the hollow tube, adapting to the required horizontal bar length for different upright spacings.

[0004] However, in the aforementioned patent, the adjustment amount of the horizontal bar length is directly proportional to the number of turns of the adjustment knob. Thus, when the adjustment amount of the horizontal bar length is large, the adjustment knob needs to be turned continuously, which still has the disadvantages of being laborious to adjust and requiring high construction intensity. Summary of the Invention

[0005] To address the issue of increased construction intensity and costs when adjusting the length of the horizontal bar, this application provides a disc-lock support frame with adjustable horizontal bar length.

[0006] This application provides a disc-lock type support frame with adjustable horizontal bar length, adopting the following technical solution:

[0007] A disc-lock type support frame with adjustable horizontal bar length includes uprights and horizontal bars. A plurality of horizontal bars are provided between two uprights. The horizontal bars are spaced apart in the vertical direction. The horizontal bars are connected to the uprights by connecting discs. Each horizontal bar includes a fixed part and a movable part. The fixed part is a cylindrical shape with an open end, and the movable part passes through the fixed part.

[0008] The top of the fixed part is also provided with a sliding groove, and a threaded sleeve is provided inside the fixed part. The threaded sleeve is connected to the movable part by a thread. The top of the threaded sleeve is provided with a threaded hole, and the threaded hole faces the sliding groove.

[0009] A locking bolt is screwed onto the outer wall of the fixing part. The tail of the locking bolt fits into the fixing part, and the head of the locking bolt passes through the sliding groove and is screwed into the threaded hole.

[0010] By adopting the above technical solution, pulling the movable part directly in the horizontal direction causes both the movable part and the threaded sleeve connected to it to move outward simultaneously. This pull-and-release mechanism allows for rapid displacement of the movable part, enabling quick and large-variable adjustment of the horizontal bar length. After coarse adjustment of the horizontal bar length by pulling the movable part, the locking bolt is screwed into the threaded hole through the groove to fix the position of the threaded sleeve. Then, rotating the movable part allows for fine adjustment of the horizontal bar length, improving the accuracy of the adjustment. The pulling and rotating of the movable part significantly reduces the physical effort required for adjusting the horizontal bar length, thus reducing construction intensity.

[0011] Preferably, the groove is formed along the length of the fixing part, and the inner wall of the groove fits against the outer wall of the locking bolt.

[0012] By adopting the above technical solution, the groove is designed so that after the threaded sleeve stops, the locking bolt can be inserted into the inside of the fixed part and screwed into the threaded hole. The clamping force between the locking bolt and the fixed part forms a fixing effect on the threaded sleeve, preventing the threaded sleeve from shifting or rotating with the moving part.

[0013] Preferably, a pad is also provided on the outer wall of the fixing part, and the pad is provided with a through hole, through which the head of the locking bolt passes into the inner side of the fixing part;

[0014] A limiting strip is provided on the side of the threaded sleeve near the opening of the fixing part. The limiting strip extends upward and passes through the sliding groove. The side wall of the pad is in contact with the limiting strip.

[0015] By adopting the above technical solution, after the movable part is pulled to the set position, the pad is moved so that it contacts the limiting strip. Then, the pad is rotated. When the through hole on the pad is above the slide groove, the through hole will be coaxial with the threaded hole. In this way, under the positioning effect of the through hole, the locking bolt can be screwed into the threaded hole more quickly, improving the locking efficiency of the threaded sleeve.

[0016] Preferably, the outer wall of the threaded sleeve fits against the inner wall of the fixed part, and the movable part has an annular groove at one end located inside the fixed part;

[0017] An L-shaped card is provided on the inner side of the fixing part. The vertical end of the card is located in the groove, and the horizontal end of the card is attached to the inner wall of the fixing part. A woven strip is provided at the horizontal end of the card. A pressure bar is provided at the bottom of the pad, and the pressure bar presses against the top of the woven strip.

[0018] By adopting the above technical solution, during the process of pulling out the movable part, the card and the braided belt will move synchronously. Under the action of the groove, the rotation of the movable part will not affect the state of the card. In this way, when the rotation of the movable part ends and the length of the horizontal bar is adjusted, the threaded sleeve is locked with a locking bolt. At this time, the pressure bar at the bottom of the pad will press against the braided belt, so that the braided belt cannot be displaced, forming a pulling effect on the movable part, thereby reducing the interaction force between the movable part and the threaded sleeve, and preventing the horizontal bar from having too much horizontal squeezing force when supporting a pair of columns, which would cause the threads between the movable part and the threaded sleeve to break.

[0019] Preferably, there is a distance between the groove and the end of the threaded sleeve.

[0020] By adopting the above technical solution, the end of the movable part with the groove is located on the outside of the threaded sleeve, which leaves a margin for fine adjustment of the length of the horizontal rod by rotating the movable part, and avoids the groove from entering the threaded sleeve as the movable part rotates, thereby preventing the card from reliably limiting the position of the movable part.

[0021] Preferably, the inner side of the fixing part is further provided with an L-shaped sliding piece, the horizontal end of the sliding piece is in contact with the inner wall of the fixing part, and the weight of the sliding piece is greater than the sum of the weight of the woven tape and the card;

[0022] One end of the braided strip is connected to the card, and the other end of the braided strip is connected to the slider.

[0023] By adopting the above technical solution, under the action of the sliding plate, it is ensured that the woven tape can be laid flat and slide under the pulling action of the card. In this way, after the pressure bar presses against the woven tape, it can be ensured that the part of the woven tape between the pressure plate and the movable part can be in a taut state, thereby forming a pulling and limiting effect on the card and the movable part.

[0024] Preferably, the slider is provided with a tension spring and a limiting block on the side away from the card, one end of the tension spring is connected to the limiting block, and the other end of the tension spring is connected to the slider;

[0025] A pressure-stop bolt is screwed onto the outer wall of the fixing part, and the pressure-stop bolt presses against the top of the limiting block.

[0026] By adopting the above technical solution, after the limiting block is limited by the pressure bolt, the limiting block is located at the innermost side of the fixed part (i.e., away from the opening of the fixed part). At this time, under the action of the tension spring, the braided strip will be in a stacked state, and the card will also be in a state close to the slider. This can maximize the length of the movable part that can be retracted into the fixed part, thereby reducing the minimum length of the horizontal bar, which is convenient for stacking and transportation.

[0027] After the movable part is pulled outward, the tension spring will be in a stretched state, which facilitates the reset of the slider, braided tape and card. Moreover, the pulling action of the tension spring on the slider can promote the transformation of the braided tape from a stacked state to a straight state, ensuring that the part of the braided tape between the pressure bar and the movable part can be in a taut state after the pressure bar presses against the braided tape, thereby ensuring the reliable limiting effect of the movable part.

[0028] Preferably, the limiting block, tension spring, slider, braided belt and card are arranged sequentially in the direction toward the outside of the fixing part.

[0029] By adopting the above technical solution, the limiting block, tension spring, slider, braided belt and card are arranged in sequence. In this way, after the tension spring retracts, the distance between the limiting block, tension spring, slider, braided belt and card can be minimized. Moreover, when the movable part is pulled out, the card can drive the braided belt and slider to move, and no jamming will occur.

[0030] Preferably, the bottom inner side of the fixing part is provided with a dovetail groove extending along the axial direction, the dovetail groove is located below the sliding groove, and the end of the dovetail groove is connected to the end of the fixing part;

[0031] The bottom of the card, the slider, and the threaded sleeve are all provided with sliders, which are adapted to be located in the dovetail groove.

[0032] By adopting the above technical solution, the slider slides adaptably in the dovetail groove, which facilitates pushing the slider, card, and threaded sleeve into the inner side of the fixed part. Under the limiting effect of the dovetail groove, the slider, card, and threaded sleeve can only move horizontally within the fixed part and cannot rotate. Furthermore, by limiting the threaded sleeve, the threaded hole on the threaded sleeve can always be located below the slide groove, which reduces the difficulty of screwing the locking bolt into the threaded hole, avoids multiple alignments of the locking bolt and the threaded hole, and improves the locking efficiency of the threaded sleeve.

[0033] Preferably, the inner bottom of the fixing part is further provided with a limiting hole, the limiting hole is connected to the dovetail groove, the limiting block is disposed in the limiting hole, and the depth of the limiting hole is less than the thickness of the limiting block.

[0034] By adopting the above technical solution, after the limiting block moves into the limiting hole, it can be reliably fixed into the limiting hole by pressing it with the stop bolt. This ensures that the limiting block can remain stationary when the movable part is pulled out, thereby ensuring that the tension spring can be stretched and that the tension spring can reset the slide, braided strip and card through its own elastic retraction.

[0035] In summary, this application has the following beneficial effects:

[0036] 1. By pulling the movable part, the movable part and the threaded sleeve are displaced simultaneously, thus quickly and effortlessly achieving coarse adjustment of the horizontal bar length. Then, by rotating the movable part within the threaded sleeve, fine adjustment of the horizontal bar length is achieved. This improves adjustment accuracy while effectively reducing the operator's workload, increasing work continuity, and ultimately reducing construction costs.

[0037] 2. By setting the locking bolt, the threaded sleeve is fixed in the fixed part. The pressure of the pressure rod on the braided belt realizes the pulling action of the movable part, which can reduce the interaction force between the threaded sleeve and the movable part, ensure the stability of the threaded connection between the movable part and the threaded sleeve, and thus ensure that the length of the horizontal bar can be reliably adjusted. Attached Figure Description

[0038] Figure 1 This is a schematic perspective view of this application;

[0039] Figure 2 It is a schematic 3D diagram of a horizontal bar;

[0040] Figure 3 This is a cross-sectional view of the internal structure of the horizontal bar;

[0041] Figure 4 yes Figure 3 Reference diagram of the action state;

[0042] Figure 5 This is a schematic 3D diagram of the pad.

[0043] In the diagram: 1. Upright pole; 10. Connecting plate; 2. Horizontal bar; 21. Fixing part; 211. Slide groove; 212. Dovetail groove; 213. Limiting hole; 22. Movable part; 220. Groove; 23. Threaded sleeve; 231. Threaded hole; 232. Locking bolt; 233. Limiting strip; 234. Slider; 24. Pad; 241. Through hole; 242. Pressure rod; 25. Card; 26. Braided belt; 27. Sliding piece; 28. Tension spring; 29. ​​Limiting block; 290. Pressure bolt. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0045] Figure 1 This is a schematic perspective view of this application. See also Figure 1 A disc-lock type support frame with adjustable horizontal bar length includes several uprights 1 and several horizontal bars 2. Several connecting discs 10 are provided on the outer wall of the uprights 1, and several horizontal bars 2 are arranged between the uprights 1. The ends of the horizontal bars 2 are connected to the connecting discs 10.

[0046] Figure 2This is a schematic 3D diagram of a horizontal bar. See also... Figure 2 and combined Figure 1 The horizontal bar 2 includes a fixed part 21 and a movable part 22. The fixed part 21 is a cylindrical shape with an open end. One end of the movable part 22 is provided on the connecting plate 10 of one vertical bar 1, and the other end of the movable part 22 is inserted into the inside of the fixed part 21. The end of the fixed part 21 without an opening is provided on the connecting plate 10 of another vertical bar 1.

[0047] Figure 3 This is a cross-sectional view of the internal structure of the horizontal bar. See also... Figure 3 The top of the fixing part 21 is provided with a sliding groove 211, which passes through the fixing part 21, so that the fixing part 21 can communicate with the outside through the sliding groove 211. The bottom inner side of the fixing part 21 is provided with a dovetail groove 212, which is located below the sliding groove 211. Both the sliding groove 211 and the dovetail groove 212 extend along the length direction of the fixing part 21. A threaded sleeve 23 is provided on the inner side of the fixed part 21. The outer wall of the threaded sleeve 23 fits against the inner wall of the fixed part 21. A slider 234 is provided at the bottom of the threaded sleeve 23. The slider 234 is adapted to be located in the dovetail groove 212. One end of the movable part 22 located inside the fixed part 21 is connected to the threaded sleeve 23 by a thread (that is, the outer wall of the movable part 22 is provided with an external thread, which can mesh with the internal thread of the threaded sleeve 23). A threaded hole 231 is provided at the top of the threaded sleeve 23. The axis of the threaded hole 231 passes through the slide groove 211. A limiting strip 233 is provided on the side of the threaded sleeve 23 near the opening of the fixed part 21. The limiting strip 233 extends to the outside of the fixed part 21 through the slide groove 211. A pad 24 is provided on the outer wall of the fixing part 21. The pad 24 has a through hole 241. The axis of the through hole 241 also passes through the slide groove 211. The pad 24 slides from the side away from the fixing part 21 and the connecting plate 10 to the position of the limiting strip 233 until it fits against the limiting strip 233.

[0048] After connecting the end of the fixed part 21 to the connecting plate 10, the movable part 22 is pulled out directly. The movable part 22 will drive the threaded sleeve 23 to slide inside the fixed part 21, increasing the length of the movable part 22 outside the fixed part 21, thus increasing the overall length of the horizontal rod 2. Moreover, using a pulling method to achieve the displacement of the movable part 22 can greatly reduce the labor intensity of the operator. Furthermore, since the bottom of the threaded sleeve 23 is provided with a slider 234, the threaded sleeve 23 will not rotate during the pulling process, and the threaded hole 231 on the threaded sleeve 23 can remain aligned with the slide groove 211. At the same time, during the sliding of the pad 24, the through hole 241 on the pad 24 remains aligned with the slide groove 211. Thus, when the pad 24 contacts the limiting strip 233, the axes of the through hole 241 and the threaded hole 231 will be in a coincident state (the distance between the axis of the through hole 241 and the limiting strip 233 and the distance between the threaded hole 231 and the limiting strip 233). (The distance is consistent), and then the locking bolt 232 is screwed into the through hole 241 and the threaded hole 231. The locking bolt 232 and the through hole 241 are in a sliding fit, and the locking bolt 232 and the threaded hole 231 are in a threaded connection. When the head of the locking bolt 232 is screwed into the threaded hole 231 and the tail of the locking bolt 232 presses against the pad 24, the locking bolt 232 will generate a locking force on the pad 24, the fixed part 21 and the threaded sleeve 23, thereby realizing the locking of the threaded sleeve 23 in the fixed part 21. At this time, the movable part 22 cannot be pulled out, and the coarse adjustment operation of the horizontal bar 2 is completed.

[0049] Figure 4 yes Figure 3 See the reference diagram for the action state. Figure 4 and combined Figure 3 After the coarse adjustment of the horizontal bar 2 is completed, the movable part 22 is close to the connecting plate 10 on the corresponding vertical bar 1. At this time, the movable part 22 is rotated again, and the movable part 22 is slowly moved to the outside of the fixed part 21 by the threaded connection between the movable part 22 and the threaded sleeve 23 until it can be connected to the connecting plate 10. This achieves the fine adjustment of the length of the horizontal bar 2. Moreover, the adjustment accuracy achieved by the threaded connection is greater than the adjustment accuracy achieved by direct pulling. That is to say, after rotating the movable part 22, the position of the threaded sleeve 23 remains unchanged, while the movable part 22 will gradually unscrew out from the threaded sleeve 23, thereby achieving a high-precision fine adjustment of the length of the horizontal bar 2.

[0050] First, the length of the horizontal bar 2 can be quickly and coarsely adjusted by pulling it out, and then the length of the horizontal bar 2 can be precisely adjusted by rotating it. While achieving high-precision adjustment of the length of the horizontal bar 2, the workload of the operator is reduced, the continuity of the operator's work is enhanced, and thus the work efficiency can be effectively improved.

[0051] See Figure 3 The end of the movable part 22 is provided with an annular groove 220. There is a distance between the groove 220 and the threaded sleeve 23 (that is, there is a distance between the end face of the movable part 22 located inside the fixed part 21 and the end face of the threaded sleeve 23 away from the limiting strip 233). In other words, the groove 220 is located outside the threaded sleeve 23, and when the movable part 22 is rotated, there is enough distance between the groove 220 and the threaded sleeve 23 to ensure that the groove 220 will not rotate to the inside of the threaded sleeve 23. The fixed part 21 is also provided with a limiting block 29, a slider 27, a tension spring 28, a braided belt 26 and a card 25. The slider 27 and the card 25 are both L-shaped. At the bottom of the horizontal end of the slider 27 and the bottom of the horizontal end of the card 25, there is also a slider 234 that is consistent with the bottom of the threaded sleeve 23, so that the slider 27, the card 25 and the threaded sleeve 23 can slide in the fixed part 21 along the opening direction of the dovetail groove 212. The limiting block 29, the slider 27, the tension spring 28, the braided belt 26, and the card 25 are arranged sequentially along the direction of outward pulling of the movable part 22. The vertical end of the card 25 extends upward into the groove 220, and the horizontal end of the card 25 is connected to one end of the braided belt 26. The horizontal end of the slider 27 is connected to the other end of the braided belt 26. One end of the tension spring 28 is connected to the vertical end of the slider 27, and the other end of the tension spring 28 is connected to the upper part of the limiting block 29. A limiting hole 213 is also provided on the inner wall of the fixing part 21. The limiting block 29 is located at the innermost side of the fixing part 21 and communicates with the dovetail groove 212. The lower part of the limiting block 29 is located inside the limiting hole 213, and the upper part of the limiting block 29 is located outside the limiting hole 213.

[0052] When the movable part 22 is pulled out, the slider 27, the card 25, and the threaded sleeve 23 can all slide within the fixed part 21 with the cooperation of the dovetail groove 212 and multiple sliders 234. During the sliding process, the slider 27, the card 25, and the threaded sleeve 23 will not rotate. Furthermore, since the weight of the slider 27 is greater than the sum of the weights of the braided belt 26 and the card 25, and the slider 27 is connected to the limiting block 29 by a tension spring 28, and a pressure bolt 290 is screwed onto the fixed part 21 to fix the limiting block 29, the card 25 will... The movable part 22 moves synchronously with the sliding piece 27, while the sliding piece 27 moves slower than the movable part 22 and the card 25. As a result, the braided tape 26 changes from a stacked state to a flat state. That is, the moving speed of the end of the braided tape 26 connected to the card 25 is greater than the moving speed of the end of the braided tape 26 connected to the sliding piece 27. When the braided tape 26 is in a flat state, the movable part 22 continues to move. Under the limiting action of the limiting block 29, the tension spring 28 is stretched, thereby achieving a pulling action on the movable part 22 through the tension of the braided tape 26, preventing the interaction force between the movable part 22 and the threaded sleeve 23 from being too large and causing the thread to break.

[0053] Figure 5 This is a schematic 3D diagram of the pad. See also... Figure 5 and combined Figure 4 Furthermore, a pressure rod 242 is provided at the bottom of the pad 24. When the pad 24 moves to fit against the limiting strip 233 and the locking bolt 232 is screwed into the threaded hole 231, as the tightening force of the locking bolt 232 increases, the downward pressure of the pressure rod 242 on the braided belt 26 also gradually increases. The pressure of the pressure rod 242 on the braided belt 26 can form a limiting effect on the braided belt 26, ensuring that when the length of the movable part 22 is pulled out is small and the braided belt 26 is not in a straight state, the braided belt 26 between the pressure rod 242 and the card 25 can still be in a taut state, realizing the pulling effect on the movable part 22. Moreover, after the threaded sleeve 23 is locked, when the movable part 22 is rotated, the card 25 cooperates with the groove 220, so that while the movable part 22 can rotate reliably, it can pull the card 25 to produce a horizontal displacement, thereby further tightening the braided belt 26, thereby reducing the pressure on the threads between the threaded sleeve 23 and the movable part 22.

[0054] When dismantling the support frame, first rotate the movable part 22 to retract it into the fixed part 21. Then, release the locking effect of the locking bolt 232 on the threaded sleeve 23 and the pressing effect of the pressure rod 242 on the braided belt 26. Under the elastic force of the tension spring 28, the slider 27, the card 25 and the threaded sleeve 23 can quickly reset. The braided belt 26 can also be restored from a flat state to a stacked state under the pulling of the slider 27 and the pushing of the movable part 22. This increases the retraction space of the movable part 22, reduces the overall length of the horizontal bar 2, and facilitates stacking and transportation.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A disc-lock type support frame with adjustable horizontal bar length, comprising uprights (1) and horizontal bars (2), wherein a plurality of horizontal bars (2) are provided between two uprights (1), the horizontal bars (2) are spaced apart in the vertical direction, and the horizontal bars (2) are connected to the uprights (1) by connecting discs (10), characterized in that, The horizontal bar (2) includes a fixed part (21) and a movable part (22). The fixed part (21) is a cylindrical shape with an open end, and the movable part (22) passes through the fixed part (21). The top of the fixed part (21) is provided with a sliding groove (211), and a threaded sleeve (23) is provided inside the fixed part (21). The threaded sleeve (23) is connected to the movable part (22) by a thread. The top of the threaded sleeve (23) is provided with a threaded hole (231), and the threaded hole (231) faces the sliding groove (211). A locking bolt (232) is screwed onto the outer wall of the fixing part (21). The tail of the locking bolt (232) fits into the fixing part (21), and the head of the locking bolt (232) passes through the slide groove (211) and is screwed into the threaded hole (231) in a suitable manner. The outer wall of the fixing part (21) is also provided with a pad (24), and the pad (24) is provided with a through hole (241). The head of the locking bolt (232) passes through the through hole (241) and enters the inner side of the fixing part (21). The threaded sleeve (23) is provided with a limiting strip (233) on the side near the opening of the fixing part (21). The limiting strip (233) extends upward and passes through the slide groove (211). The side wall of the pad (24) is in contact with the limiting strip (233). The outer wall of the threaded sleeve (23) fits against the inner wall of the fixed part (21), and the movable part (22) has an annular groove (220) at one end located inside the fixed part (21). The inner side of the fixing part (21) is provided with an L-shaped card (25). The vertical end of the card (25) is located in the groove (220). The horizontal end of the card (25) is attached to the inner wall of the fixing part (21). The horizontal end of the card (25) is provided with a braided strip (26). The bottom of the pad (24) is provided with a pressure rod (242). The pressure rod (242) presses against the top of the braided strip (26). There is a distance between the groove (220) and the end of the threaded sleeve (23).

2. The adjustable horizontal bar length disc-lock support frame according to claim 1, characterized in that, The groove (211) is opened along the length direction of the fixing part (21), and the inner wall of the groove (211) is in contact with the outer wall of the locking bolt (232).

3. The adjustable horizontal bar length disc-lock support frame according to claim 1, characterized in that, The inner side of the fixing part (21) is also provided with an L-shaped slide (27), the horizontal end of the slide (27) is in contact with the inner wall of the fixing part (21), and the weight of the slide (27) is greater than the sum of the weights of the woven tape (26) and the card (25). One end of the braided strip (26) is connected to the card (25), and the other end of the braided strip (26) is connected to the slider (27).

4. A disc-lock type support frame with adjustable horizontal bar length according to claim 3, characterized in that, The slider (27) is provided with a tension spring (28) and a limiting block (29) on the side away from the card (25). One end of the tension spring (28) is connected to the limiting block (29), and the other end of the tension spring (28) is connected to the slider (27). A pressure-stop bolt (290) is screwed onto the outer wall of the fixing part (21), and the pressure-stop bolt (290) presses against the top of the limiting block (29).

5. A disc-lock type support frame with adjustable horizontal bar length according to claim 4, characterized in that, The limiting block (29), tension spring (28), slider (27), braided belt (26) and card (25) are arranged sequentially in the direction toward the outside of the fixing part (21).

6. A disc-lock type support frame with adjustable horizontal bar length according to claim 4, characterized in that, The bottom inner side of the fixing part (21) is provided with a dovetail groove (212) extending along the axial direction. The dovetail groove (212) is located below the sliding groove (211), and the end of the dovetail groove (212) is connected to the end of the fixing part (21). The bottom of the card (25), the slide (27) and the threaded sleeve (23) are all provided with sliders (234), which are adapted to be located in the dovetail groove (212).

7. A disc-lock type support frame with adjustable horizontal bar length according to claim 6, characterized in that, The inner bottom of the fixing part (21) is also provided with a limiting hole (213), the limiting hole (213) is connected to the dovetail groove (212), the limiting block (29) is provided in the limiting hole (213), and the depth of the limiting hole (213) is less than the thickness of the limiting block (29).

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