A single bar with multi-adjustment

Abstract

The present application relates to a kind of multi-gear adjustment's single pole, comprising: support assembly, including base and a set of support square tube, respectively liftable installation is installed with lifting square tube on support square tube;Height adjustable single pole body, detachably installed between a set of lifting square tube;Limiting support mechanism, including a plurality of support blocks being fixedly connected in support square tube, the outside of support block is respectively movably installed with magnetic metal support piece;Support transmission mechanism, including the end plate being fixedly connected to the bottom side of lifting square tube, the middle part of end plate is rotatably installed with stand, the bottom end of stand is fixedly connected with link block, the two sides of link block are respectively movably installed with link support piece, after the locking screw rod is locked to the corresponding locking hole of lifting square tube, the link block and link support piece are respectively fixedly abutted to the upper side of the magnetic metal support piece and support block.The present application can effectively greatly improve the link stability between lifting square tube and support square tube under the premise of not affecting the normal height adjustment of lifting square tube.

Description

Technical Field

[0001] This invention relates to the field of sports exercise equipment technology, specifically to a multi-adjustable horizontal bar. Background Technology

[0002] As a basic and widely used piece of exercise equipment, the horizontal bar is extensively used in various settings such as home fitness, school sports facilities, and community fitness areas, primarily for core strength training exercises such as pull-ups and hanging leg raises. Because users of different heights and different training programs require different bar heights—for example, children need a lower height for group training, while taller adult users need a higher hanging height; pull-up training and hanging abdominal muscle training also often require different bar heights—horsepower horizontal bars with adjustable heights have begun to be developed and used.

[0003] Existing multi-level adjustable horizontal bars generally consist of a support assembly and a lifting assembly. The support assembly typically comprises a base and a set of support square tubes, while the lifting assembly includes a set of lifting square tubes movably mounted on the support square tubes. The horizontal bar body extends across the set of lifting square tubes. The lifting square tubes are fixed to the support square tubes via locking screws, which can easily lead to stress concentration at the connection points of the locking screws. This can cause deformation of the equipment, and in severe cases, even result in safety accidents, causing considerable inconvenience.

[0004] Therefore, the research objective of this invention is to design a multi-level adjustable horizontal bar that can effectively and significantly improve the connection stability between the lifting square tube and the supporting square tube, thereby effectively preventing excessive deformation of the equipment during use and significantly improving the safety of the equipment, without affecting the normal height adjustment of the lifting square tube. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a multi-level adjustable horizontal bar, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is: A multi-adjustable horizontal bar, comprising: The support assembly includes a base and a set of support square tubes fixed to both sides of the base, and corresponding lifting square tubes are respectively installed on the upper side of the support square tubes. The height-adjustable single rod body is detachably installed between the tops of a set of lifting square tubes. The lifting square tubes are provided with multiple corresponding locking holes according to their height. The upper part of the supporting square tube is screwed with a locking screw for passing through and locking into the locking hole. The limiting support mechanism includes multiple sets of support blocks that are fixed at different heights inside the support square tube. The distance between two adjacent support blocks is equal to the distance between two adjacent locking holes. Corresponding magnetic metal support components are movably installed on the outside of the support blocks by means of corresponding first springs. The support and transmission mechanism includes a sealing plate fixed to the bottom side of the lifting square tube. A corresponding column is rotatably installed in the middle of the sealing plate. A corresponding connecting block is fixed to the bottom end of the column. A corresponding connecting support is movably installed on both sides of the connecting block by a corresponding second spring. A corresponding magnet is fixedly embedded on the outer side of the connecting support. After the locking screw passes through and locks into the corresponding locking hole of the lifting square tube, the connecting block and the connecting support are fixedly abutted against the upper side of the magnetic metal support and the support block, respectively. A set of driving magnet blocks are detachably mounted on the support square tube on the outside of the support block.

[0007] When the driving magnet block is installed onto the supporting square tube, the magnetic metal support is magnetically driven to abut against the supporting block. The magnet and the driving magnet block are like poles that repel each other. The connecting support is driven to abut against the connecting block, allowing the connecting block and the connecting support to rise and fall through the positions of the supporting block and the magnetic metal support. After the driving magnet block is removed from the supporting square tube, the connecting support and the magnetic metal support are reset, so that the connecting block and the connecting support are fixedly abut against the upper side of the magnetic metal support and the supporting block, respectively.

[0008] The outer side of each support block is provided with a corresponding insertion hole, and the middle part of the magnetic metal support is provided with an insertion shaft that is adapted to the insertion hole. The insertion shaft is movably inserted into the insertion hole by the first spring.

[0009] The connecting block has corresponding limiting holes on both sides of its middle section, and the connecting support has guide shafts adapted to the limiting holes in its middle section. The guide shafts are movably inserted into the limiting holes by the second spring.

[0010] The upper side of the column is movably installed with a corresponding fixing pad by a threaded connection. The periphery of the fixing pad is movably abutted against the inner wall of the lifting square tube, and the fixing pad is provided with a locking thread hole that matches the locking hole. The rotation of the column drives the fixing pad to lift, so that the locking thread hole on the fixing pad is aligned with the locking hole. The end of the locking screw is screwed onto the locking thread hole of the fixing pad.

[0011] At the position where the locking screw is not provided, a tightening bolt is screwed onto the outer wall of the lifting square tube. The tightening bolt is tightened onto the lifting square tube outside the fixing pad.

[0012] The column is rotatably mounted onto the sealing plate via a corresponding mounting bearing, and a support reinforcement member with its top movable and abutting against the sealing plate is fixedly connected to the column on the bottom side of the sealing plate.

[0013] The top of the lifting square tube is horizontally fixed with corresponding insertion sleeves, and both ends of the height-adjustable single rod body are respectively inserted into the insertion sleeves and fixed by corresponding pins.

[0014] The base includes a T-shaped support connecting tube fixed to the bottom of the support square tube. Corresponding bottom support tubes are provided on both sides of the support connecting tube. The bottom support tube and the support connecting tube are connected by corresponding docking plates. The docking plates are detachably connected to the bottom support tube and the support connecting tube by bolt locking.

[0015] The supporting square tube and the bottom supporting tube are detachably connected by corresponding diagonal tie rods through bolt locking. The supporting connecting tube and the bottom supporting tube are detachably connected by corresponding tension rods through bolt locking.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1) Based on the original locking screw, this invention further adds a limiting support mechanism and a support transmission mechanism. Before adjusting the height of the lifting square tube, a set of driving magnets is held and fixed to the supporting square tube. The magnetic attraction force drives the magnetic metal support and the magnet respectively, so that the magnetic metal support is driven to abut against the support block. The magnet and the driving magnet repel each other, thereby driving the connecting support to abut against the connecting block. The connecting block and the connecting support can then rise and fall through the positions of the support block and the magnetic metal support to adjust the position of the lifting square tube. After the adjustment is completed, the driving magnets are removed from the supporting square tube, so that the connecting support and the magnetic metal support are reset respectively, and the connecting block and the connecting support are fixed to the upper side of the magnetic metal support and the support block respectively. Based on locking the lifting square tube and the supporting square tube with the locking screw, the bottom of the lifting square tube is further effectively supported. This significantly improves the connection stability between the lifting square tube and the supporting square tube without affecting the normal height adjustment of the lifting square tube, thereby effectively preventing excessive deformation of the equipment during use and significantly improving the safety of the equipment.

[0017] 2) The support block of the present invention has corresponding insertion holes on its outer side. The magnetic metal support member has an insertion shaft in its middle that matches the insertion hole. The insertion shaft is movably inserted into the insertion hole via a first spring. The connecting block has corresponding limiting holes on both sides of its middle section. The connecting support member has guide shafts in its middle section that match the limiting holes. The guide shafts are movably inserted into the limiting holes via second springs. The insertion shafts and guide shafts not only enable the movable installation of the magnetic metal support member and the connecting support member, but also effectively ensure that the magnetic metal support member and the connecting support member have reasonable supporting force, thereby effectively ensuring the practical effect of the present invention.

[0018] 3) A corresponding fixing block is movably installed on the upper side of the column of the present invention via a threaded connection. The periphery of the fixing block is movably abutted against the inner wall of the lifting square tube, and the fixing block is provided with a locking thread hole that matches the locking hole. By rotating the column, the fixing block can be driven to move up and down within the lifting square tube. In this way, the position of the fixing block only needs to be adjusted as needed before the height of the lifting square tube is adjusted, so as to ensure that the locking thread hole on the fixing block after the position adjustment can correspond to the locking hole that needs to be locked. Then, the end of the locking screw is screwed onto the locking thread hole of the fixing block, thereby distributing a portion of the locking force of the locking screw to the fixing block, that is, to the column, to further improve the connection stability between the lifting square tube and the supporting square tube of the present invention.

[0019] 4) At the location where the supporting square tube of the present invention does not have a locking screw, a tightening bolt is screwed on for tightening and fixing to the outer wall of the lifting square tube. The tightening bolt is tightened and fixed to the lifting square tube outside the fixing pad. The tightening of the tightening bolt further improves the connection stability between the lifting square tube and the supporting square tube of the present invention. At the same time, the intervention of the fixing pad reduces the mechanical damage of the tightening bolt when tightening the lifting square tube, thereby effectively improving the practical effect of the present invention.

[0020] 5) The column of the present invention is rotatably mounted on the sealing plate through a corresponding mounting bearing, and a support reinforcement member with a top that can move and abut against the sealing plate is fixedly connected to the column on the bottom side of the sealing plate, so as to transfer the force from the lifting square tube directly to the support reinforcement member and the column through the sealing plate, thereby reducing the impact of force transfer on the rotational installation of the column and ensuring the stability of the rotational installation of the column.

[0021] 6) The top of the lifting square tube of the present invention is horizontally fixed with corresponding insertion sleeves. Both ends of the height-adjustable single rod body are inserted into the insertion sleeves and fixed by corresponding pins. The base of the present invention includes a T-shaped support connecting tube fixed to the bottom of the support square tube. Corresponding bottom support tubes are provided on both sides of the support connecting tube. The bottom support tube and the support connecting tube are connected by corresponding docking plates. The docking plates are detachably connected to the bottom support tube and the support connecting tube by bolt locking. Corresponding diagonal tie rods are detachably connected between the support square tube and the bottom support tube by bolt locking. Corresponding tension rods are detachably connected between the support connecting tube and the bottom support tube by bolt locking. Under the premise of ensuring the support stability of the base and the assembly stability of the height-adjustable single rod body, the detachable assembly of each component is effectively realized, so that the present invention can be easily stored and the storage space can be reduced when not in use, thereby improving the use effect of the present invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the base of the present invention.

[0024] Figure 3 This is a schematic diagram of the limiting support mechanism.

[0025] Figure 4 This is a schematic diagram of the structure in which the lifting square tube is installed inside the supporting square tube.

[0026] Figure 5 This is an assembly diagram of the limit support mechanism and the support transmission mechanism.

[0027] Figure 6 This diagram illustrates the usage status of the limit support mechanism and the support transmission mechanism when the drive magnet block is installed in place.

[0028] Figure 7 This is an assembly diagram showing how the jacking bolts are tightened and fixed to the outside of the lifting square tube.

[0029] Figure 8 This is a schematic diagram of a structure with supporting reinforcements fixed to the column.

[0030] In the attached diagram: Support assembly 1, base 101, support connecting tube 1011, bottom support tube 1012, docking plate 1013, diagonal tie rod 1014, traction rod 1015, support square tube 102, lifting square tube 2, height adjustable single rod body 3, locking hole 4, locking screw 5, limiting support mechanism 6, support block 601, first spring 602, magnetic metal support 603, support transmission mechanism 7, sealing plate 701, column 702, connecting block 703, second spring 704, connecting support 705, magnet 706, driving magnet block 8, plug-in shaft 9, guide shaft 10, fixing pad 11, locking threaded hole 1101, tightening bolt 12, mounting bearing 13, support reinforcement 14, plug-in sleeve 15. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] refer to Figure 1-8 A multi-adjustable horizontal bar, comprising: The support assembly 1 includes a base 101 and a set of support square tubes 102 fixed to both sides of the base 101. The upper side of the support square tubes 102 is respectively equipped with corresponding lifting square tubes 2. The height-adjustable single rod body 3 is detachably installed between the tops of a set of lifting square tubes 2. The lifting square tubes 2 are provided with multiple corresponding locking holes 4 according to their height. The upper part of the supporting square tube 102 is screwed with a locking screw 5 for passing through and locking into the locking hole 4. The limiting support mechanism 6 includes multiple sets of support blocks 601 that are fixed at different heights within the support square tube 102. The distance between two adjacent support blocks 601 is equal to the distance between two adjacent locking holes 4. Corresponding magnetic metal support members 603 are movably installed on the outside of the support blocks 601 via corresponding first springs 602. The support and transmission mechanism 7 includes a sealing plate 701 fixed to the bottom side of the lifting square tube 2. A corresponding column 702 is rotatably installed in the middle of the sealing plate 701. A corresponding connecting block 703 is fixedly connected to the bottom end of the column 702. A corresponding connecting support 705 is movably installed on both sides of the connecting block 703 by a corresponding second spring 704. A corresponding magnet 706 is fixedly embedded on the outer side of the connecting support 705. After the locking screw 5 passes through and locks into the corresponding locking hole 4 of the lifting square tube 2, the connecting block 703 and the connecting support 705 are fixedly abutted against the upper side of the magnetic metal support 603 and the support block 601, respectively. A set of driving magnet blocks 8 are detachably mounted on the support square tube 102 on the outside of the support block 601.

[0033] When the driving magnet block 8 is installed onto the supporting square tube 102, the magnetic metal support member 603 is magnetically driven to abut against the supporting block 601. The magnet member 706 and the driving magnet block 8 are like poles that repel each other. The connecting support member 705 is driven to abut against the connecting block 703, so that the connecting block 703 and the connecting support member 705 can rise and fall through the positions of the supporting block 601 and the magnetic metal support member 603. After the driving magnet block 8 is removed from the supporting square tube 102, the connecting support member 705 and the magnetic metal support member 603 are reset, so that the connecting block 703 and the connecting support member 705 are fixedly abut against the upper side of the magnetic metal support member 603 and the supporting block 601, respectively.

[0034] Based on the original locking screw 5, this invention further adds a limiting support mechanism 6 and a support transmission mechanism 7. Before adjusting the height of the lifting square tube 2, a set of driving magnets 8 are held and fixed to the supporting square tube 102. The magnetic attraction force drives the magnetic metal support 603 and the magnet 706 respectively, so that the magnetic metal support 603 is magnetically driven to abut against the support block 601, and the like poles of the magnet 706 and the driving magnets 8 repel each other, thereby driving the connecting support 705. The connecting block 703 is abutted against, allowing the connecting block 703 and the connecting support 705 to rise and fall above the positions of the support block 601 and the magnetic metal support 603, thereby adjusting the position of the lifting square tube 2. After adjustment, the driving magnet 8 is removed from the support square tube 102, causing the connecting support 705 and the magnetic metal support 603 to reset, and then the connecting block 703 and the connecting support 705 are fixed against the upper sides of the magnetic metal support 603 and the support block 601, respectively. This effectively locks the lifting square tube 2 and the support square tube 102 with the locking screw 5, further providing support to the bottom of the lifting square tube 2. This significantly improves the connection stability between the lifting square tube 2 and the support square tube 102 without affecting the normal height adjustment of the lifting square tube 2, thereby effectively preventing excessive deformation of the equipment during use and significantly improving the safety of the equipment.

[0035] The outer side of the support block 601 is provided with corresponding insertion holes. The middle part of the magnetic metal support member 603 is provided with an insertion shaft 9 that matches the insertion hole. The insertion shaft 9 is movably inserted into the insertion hole through the first spring 602. The middle two sides of the connecting block 703 are provided with corresponding limiting holes. The middle part of the connecting support member 705 is provided with guide shafts 10 that match the limiting holes. The guide shafts 10 are movably inserted into the limiting holes through the second spring 704.

[0036] By intervening in the insertion shaft 9 and the guide shaft 10, not only can the magnetic metal support 603 and the connecting support 705 be movably installed, but the magnetic metal support 603 and the connecting support 705 can also be effectively ensured to have reasonable support force, thereby effectively ensuring the practical effect of the present invention.

[0037] The upper side of the column 702 is movably mounted with a corresponding fixing pad 11 via a threaded connection. The periphery of the fixing pad 11 is movably abutted against the inner wall of the lifting square tube 2. The fixing pad 11 is provided with a locking threaded hole 1101 that matches the locking hole 4. The rotation of the column 702 drives the fixing pad 11 to lift, so that the locking threaded hole 1101 on the fixing pad 11 is aligned with the locking hole 4. The end of the locking screw 5 is screwed onto the locking threaded hole 1101 of the fixing pad 11.

[0038] The fixed pad 11 can be driven to move up and down within the lifting square tube 2 by rotating the column 702. In this way, the position of the fixed pad 11 can be adjusted as needed before the height of the lifting square tube 2 is adjusted, so as to ensure that the locking thread hole 1101 on the fixed pad 11 after the position adjustment can correspond to the locking hole 4 that needs to be locked. Then, the rod end of the locking screw 5 can be screwed onto the locking thread hole 1101 of the fixed pad 11, thereby distributing a portion of the locking force of the locking screw 5 to the fixed pad 11, that is, to the column 702, so as to further improve the connection stability between the lifting square tube 2 and the supporting square tube 102 of the present invention.

[0039] At the location where the locking screw 5 is not located, a tightening bolt 12 is screwed onto the outer wall of the lifting square tube 2. The tightening bolt 12 is tightened and fixed onto the lifting square tube 2 outside the fixing pad 11. The tightening of the tightening bolt 12 further improves the connection stability between the lifting square tube 2 and the supporting square tube 102. At the same time, the intervention of the fixing pad 11 reduces the mechanical damage of the tightening bolt 12 when tightening the lifting square tube 2, thereby effectively improving the practical effect of the present invention.

[0040] The column 702 is rotatably mounted on the sealing plate 701 via a corresponding mounting bearing 13. Support reinforcement members 14, which are movable at the top and abut against the sealing plate 701, are fixedly connected to the column 702 on the bottom side of the sealing plate 701. This allows the force from the lifting square tube 2 to be directly transferred through the sealing plate 701 to the support reinforcement members 14 and the column 702, thereby reducing the impact of force transfer on the rotational installation of the column 702 and ensuring the stability of the rotational installation of the column 702.

[0041] The top of the lifting square tube 2 is respectively horizontally fixed with corresponding insertion sleeves 15, and the two ends of the height-adjustable single rod body 3 are respectively inserted into the insertion sleeves 15 and fixed by corresponding pins.

[0042] The base 101 includes a T-shaped support connecting tube 1011 fixed to the bottom of the support square tube 102. The support connecting tube 1011 has corresponding bottom support tubes 1012 on both sides. The bottom support tubes 1012 and the support connecting tube 1011 are connected by corresponding docking plates 1013. The docking plates 1013 are detachably connected to the bottom support tubes 1012 and the support connecting tubes 1011 by bolt locking.

[0043] The supporting square tube 102 and the bottom supporting tube 1012 are respectively detachably connected by bolts with corresponding diagonal tie rods 1014. The supporting connecting tube 1011 and the bottom supporting tube 1012 are respectively detachably connected by bolts with corresponding tension rods 1015.

[0044] While ensuring the stability of the base 101 and the assembly stability of the height-adjustable single rod body 3, the invention effectively achieves the detachable assembly of each component, thereby making it easy to store and reduce storage space when not in use, thus improving the effectiveness of the invention.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A multi-level adjustable horizontal bar, characterized in that, include: The support assembly (1) includes a base (101) and a set of support square tubes (102) fixed to both sides of the base (101). A corresponding lifting square tube (2) is installed on the upper side of the support square tube (102). The height-adjustable single rod body (3) is detachably installed between the tops of a set of lifting square tubes (2). The lifting square tubes (2) are provided with multiple corresponding locking holes (4) at different heights. The upper part of the supporting square tube (102) is screwed with a locking screw (5) for passing through and locking into the locking hole (4). The limiting support mechanism (6) includes multiple sets of support blocks (601) fixed at different heights within the support square tube (102). The distance between two adjacent support blocks (601) is equal to the distance between two adjacent locking holes (4). A corresponding magnetic metal support (603) is movably installed on the outside of the support block (601) via a corresponding first spring (602). The support transmission mechanism (7) includes a sealing plate (701) fixed to the bottom side of the lifting square tube (2). A corresponding column (702) is rotatably installed in the middle of the sealing plate (701). 2) The bottom end is fixed with a corresponding connecting block (703). On both sides of the connecting block (703), corresponding connecting support (705) is movably installed by corresponding second spring (704). The outer side of the connecting support (705) is fixedly embedded with a corresponding magnet (706). After the locking screw (5) passes through and locks into the corresponding locking hole (4) of the lifting square tube (2), the connecting block (703) is fixedly abutted against the upper side of the magnetic metal support (603), and the connecting support (705) is fixedly abutted against the upper side of the support block (601). The driving magnet block (8) is detachably mounted on the support square tube (102) outside the support block (601).

2. The multi-level adjustable horizontal bar according to claim 1, characterized in that, When the driving magnet block (8) is installed on the supporting square tube (102), the magnetic metal support member (603) is magnetically driven to abut against the supporting block (601), the magnet member (706) and the driving magnet block (8) are like poles and repel each other, and the connecting support member (705) is driven to abut against the connecting block (703), so that the connecting block (703) and the connecting support member (705) can rise and fall through the positions of the supporting block (601) and the magnetic metal support member (603); after the driving magnet block (8) is removed from the supporting square tube (102), the connecting support member (705) and the magnetic metal support member (603) are respectively reset, so that the connecting block (703) is fixedly abutted against the upper side of the magnetic metal support member (603), and the connecting support member (705) is fixedly abutted against the upper side of the supporting block (601).

3. A multi-level adjustable horizontal bar according to claim 2, characterized in that, The support block (601) has a corresponding insertion hole on its outer side, and the magnetic metal support (603) has an insertion shaft (9) in the middle that is adapted to the insertion hole. The insertion shaft (9) is movably inserted into the insertion hole by the first spring (602).

4. A multi-level adjustable horizontal bar according to claim 3, characterized in that, The connecting block (703) has corresponding limiting holes on both sides of its middle section. The connecting support (705) has a guide shaft (10) that is compatible with the limiting holes in its middle section. The guide shaft (10) is movably inserted into the limiting holes via the second spring (704).

5. A multi-level adjustable horizontal bar according to claim 1, characterized in that, The upper side of the column (702) is movably installed with a corresponding fixing pad (11) by means of a threaded connection. The periphery of the fixing pad (11) is movably abutted against the inner wall of the lifting square tube (2). The fixing pad (11) is provided with a locking thread hole (1101) that matches the locking hole (4). The rotation of the column (702) drives the fixing pad (11) to lift, so that the locking thread hole (1101) on the fixing pad (11) is aligned with the locking hole (4). The rod end of the locking screw (5) is screwed onto the locking thread hole (1101) of the fixing pad (11).

6. A multi-level adjustable horizontal bar according to claim 5, characterized in that, The supporting square tube (102) is not provided with the locking screw (5) and is also screwed with a tightening bolt (12) for tightening and fixing to the outer wall of the lifting square tube (2). The tightening bolt (12) is tightened and fixed to the lifting square tube (2) outside the fixing pad (11).

7. A multi-level adjustable horizontal bar according to claim 6, characterized in that, The column (702) is rotatably mounted on the sealing plate (701) via a corresponding mounting bearing (13), and a support reinforcement (14) is fixedly connected to the column (702) on the bottom side of the sealing plate (701) and its top is movable and abuts against the sealing plate (701).

8. A multi-level adjustable horizontal bar according to claim 7, characterized in that, The top of the lifting square tube (2) is horizontally fixed with a corresponding insertion sleeve (15), and both ends of the height-adjustable single rod body (3) are respectively inserted into the insertion sleeve (15) and fixed by corresponding pins.

9. A multi-level adjustable horizontal bar according to claim 8, characterized in that, The base (101) includes a support connecting tube (1011) that is T-shaped and fixed to the bottom of the support square tube (102). The support connecting tube (1011) has corresponding bottom support tubes (1012) on both sides. The bottom support tube (1012) and the support connecting tube (1011) are connected by corresponding docking plates (1013). The docking plates (1013) are detachably connected to the bottom support tube (1012) and the support connecting tube (1011) by bolt locking.

10. A multi-level adjustable horizontal bar according to claim 9, characterized in that, The supporting square tube (102) and the bottom supporting tube (1012) are detachably connected by a corresponding diagonal tie rod (1014) through a bolt locking method. The supporting connecting tubes (1011) are detachably connected by a corresponding first traction rod through a bolt locking method. The bottom supporting tubes (1012) are also detachably connected by a corresponding second traction rod through a bolt locking method.

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