Auxiliary supporting leg straight ladder

Abstract

The utility model relates to the technical field of ladder equipment, in particular to an auxiliary supporting leg straight ladder which comprises a main ladder piece, a telescopic ladder piece used for prolonging the length of the main ladder piece is arranged on the main ladder piece, and an auxiliary ladder piece used for supporting the main ladder piece is arranged on the telescopic ladder piece. And an angle control assembly for controlling and fixing an angle is arranged between the auxiliary ladder piece and the main ladder piece. The length of the main ladder piece is extended by using the extension ladder piece, the height of the auxiliary ladder piece can be adjusted, the length of the auxiliary ladder piece can be adjusted by adjusting the plurality of movable joint parts according to the situation of a use site, and then the length of the auxiliary ladder piece is fixed by using the fixing assembly. And then the angle relation between the auxiliary ladder piece and the main ladder piece is fixed by using the angle control assembly, so that the ladder is more suitable for a narrow space or a working surface with steps at the bottom, and the flexibility is higher.

Description

Technical Field

[0001] The utility model relates to a straight ladder, in particular to an auxiliary leg straight ladder, belonging to the technical field of ladder equipment. Background Art

[0002] Ladders are common and widely used equipment in daily production or life. Ladders have a wide range of uses. Especially in construction scenarios, when high-altitude work is required, ladders can help workers reach higher positions to assist them in completing high-altitude work. Moreover, in construction sites, sometimes it is necessary to cross obstacles such as walls and railings. Ladders can help workers cross obstacles to facilitate construction. When workers use ladders, they can provide stable support, reduce the risk of falling, and ensure the safety of workers. There are various types of ladders, each with its own uses. Selecting the appropriate ladder type in the appropriate scenario can achieve the construction purpose.

[0003] During the operation process at the construction site, high-altitude work is everywhere, and operation ladders are used more frequently. When using a single ladder, it is unstable. The upper end is supported on the wall and the lower end touches the ground. It does not have anti-slip and anti-tipping functions, which may cause slipping and tipping. Therefore, it is prohibited to use on-site. When using a folding ladder, due to wall or space limitations, it cannot be close to the wall for construction or the space is too small to facilitate construction, resulting in reduced practicability and low flexibility.

[0004] Therefore, it is urgent to improve the straight ladder to solve the above existing problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary leg straight ladder. By using a telescopic ladder member to extend the length of the main ladder member, the height of the auxiliary ladder member can be adjusted accordingly. According to the situation of the use site, adjusting several movable joint components can adjust the length of the auxiliary ladder member. Then, using a fixing component to fix the length of the auxiliary ladder member, and then using an angle control component to fix the angular relationship between the auxiliary ladder member and the main ladder member. This device can adjust the angle between the main ladder and the auxiliary ladder at multiple angles in a building with a complex structure and during construction in a narrow space, and is more suitable for narrow spaces or working surfaces with steps at the bottom, with greater flexibility.

[0006] To achieve the above purpose, the main technical solutions adopted by the utility model include: including a main ladder member, a telescopic ladder member for extending the length of the main ladder member is provided on the main ladder member, an auxiliary ladder member for supporting the main ladder member is provided on the telescopic ladder member, and an angle control component for controlling and fixing the angle is provided between the auxiliary ladder member and the main ladder member;

[0007] The auxiliary ladder member includes a plurality of movable section members which are slidably connected to each other. A fixing assembly for fixing adjacent movable section members is provided on the movable section members. The movable section member includes two movable vertical rods and a fixed horizontal rod, and the fixed horizontal rod is fixedly connected between the two movable vertical rods.

[0008] Preferably, the main ladder member includes two first vertical rods, a plurality of first cross bars and two sliding tracks. The plurality of first cross bars are fixedly connected at equal intervals between the two first vertical rods, and the two sliding tracks are respectively fixedly connected to the side walls of one side of the two first vertical rods.

[0009] Preferably, the telescopic ladder member includes two sliding vertical rods and a plurality of second cross bars. The two sliding vertical rods are respectively slidably connected in the two sliding tracks, and the plurality of second cross bars are fixedly connected at equal intervals between the two sliding vertical rods. Fixed connecting plates are respectively fixedly connected to the side walls of one side of the two sliding vertical rods away from the main ladder member.

[0010] Preferably, a groove plate is fixedly connected to the fixed connecting plate, and a rotating member is rotatably connected in the groove plate. The two rotating members are respectively fixedly connected to one ends of the two movable vertical rods in one of the movable section members. Fixed slots are respectively formed on the side walls of one side of the two movable vertical rods, and sliding slots are respectively formed on the side walls of both ends of the fixed horizontal rod.

[0011] Preferably, the fixing assembly includes a hand push plate, a square column, a pipe fitting, a spring and a cylindrical pin. The cylindrical pin is slidably connected in the sliding slot, one side wall of the pipe fitting is fixedly connected to the end face of one end of the cylindrical pin, the square column is slidably connected in the pipe fitting, both ends of the spring are respectively fixedly connected to the inner bottom wall of the pipe fitting and the end face of one end of the square column, and the hand push plate is fixedly connected to the end face of the square column away from the pipe fitting.

[0012] Preferably, protrusions are respectively provided on both side walls of one end of the pipe fitting away from the square column, and the protrusions are slidably connected to the sliding slot. One side face of the hand push plate close to the square column is in contact with the side wall of the fixed horizontal rod, and one end of the cylindrical pin away from the pipe fitting is movably connected to the fixed slot.

[0013] Preferably, the angle control component includes a fixed block, a rotating positioning plate, a threaded block, and a rotating bolt. The fixed block is fixedly connected to the side wall of one of the movable vertical rods fixedly connected to the rotating member. The threaded block is fixedly connected to the side wall of the sliding track away from the second crossbar. One end of the rotating positioning plate is rotatably connected to the fixed block. A plurality of positioning holes are formed in the rotating positioning plate. The rotating bolt is movably threadedly connected to the threaded block, and the other end of the rotating positioning plate is fixedly connected to the threaded block through the rotating bolt.

[0014] The utility model at least has the following beneficial effects:

[0015] 1. By using the telescopic ladder member to extend the length of the main ladder member, the height of the auxiliary ladder member can be adjusted accordingly. According to the situation of the use site, adjusting several movable joint components can adjust the length of the auxiliary ladder member. Then, use the fixing component to fix the length of the auxiliary ladder member. Next, use the angle control component to fix the angular relationship between the auxiliary ladder member and the main ladder member. When the device is used in buildings with complex structures and during construction in narrow spaces, the angle between the main ladder and the auxiliary ladder can be adjusted at multiple angles, making it more suitable for narrow spaces or working surfaces with steps at the bottom, and having greater flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is an isometric structural schematic diagram provided by the present utility model;

[0018] Figure 2 is provided by the present utility model Figure 1 is an enlarged schematic diagram of the structure at A in

[0019] Figure 3 is a structural schematic diagram of the main ladder member, telescopic ladder member, and auxiliary ladder member provided by the present utility model;

[0020] Figure 4 is a partial structural explosion schematic diagram provided by the present utility model;

[0021] Figure 5 is a structural schematic diagram of the angle control component provided by the present utility model;

[0022] Figure 6 is a structural schematic diagram of the movable joint component provided by the present utility model.

[0023] In the figure, 1 is the main ladder component; 100 is the first vertical pole; 101 is the first cross bar; 102 is the sliding track; 2 is the telescopic ladder component; 200 is the sliding vertical pole; 201 is the second cross bar; 3 is the auxiliary ladder component; 4 is the angle control component; 400 is the fixed block; 401 is the rotating positioning plate; 402 is the threaded block; 403 is the rotating bolt; 404 is the positioning hole; 5 is the movable joint component; 500 is the movable vertical pole; 501 is the fixed cross bar; 6 is the fixed connecting plate; 7 is the groove plate; 8 is the rotating part; 9 is the fixed slot; 10 is the sliding slot; 11 is the push plate; 12 is the square column; 13 is the pipe fitting; 14 is the spring; 15 is the cylindrical pin; 16 is the protrusion. Detailed implementation mode

[0024] The following will be combined with the drawings and embodiments to detail the implementation mode of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0025] As Figures 1-6 shown, the auxiliary leg straight ladder provided in this embodiment includes a main ladder component 1. A telescopic ladder component 2 for extending the length of the main ladder component 1 is provided on the main ladder component 1. An auxiliary ladder component 3 for supporting the main ladder component 1 is provided on the telescopic ladder component 2. An angle control component 4 for controlling and fixing the angle is provided between the auxiliary ladder component 3 and the main ladder component 1. When in use, place the main ladder component 1 in a suitable position, then use the telescopic ladder component 2 to slide on the main ladder component 1. While sliding, the overall length of the main ladder component 1 can be extended. When the telescopic ladder component 2 extends outward, it will drive the auxiliary ladder component 3 to move upward. When the telescopic ladder component 2 extends to a suitable position, rotate the auxiliary ladder component 3 to a suitable angle, then adjust the movable joint component 5, and during the adjustment process, continuously use the fixing component to fix the adjusted movable joint component 5 until the bottom movable joint component 5 contacts the ground and then stop. Then use the angle control component 4 to fix the angle relationship between the auxiliary ladder component 3 and the main ladder component 1, making the overall device more stable during use. The auxiliary ladder component 3 and the telescopic ladder component 2 cooperate with the main ladder component 1 for use, and can be flexibly used when the construction site is relatively narrow;

[0026] The auxiliary ladder component 3 includes a plurality of movable joint components 5. The plurality of movable joint components 5 are slidably connected to each other. A fixing component for fixing adjacent movable joint components 5 is provided on the movable joint component 5. The movable joint component 5 includes two movable vertical poles 500 and a fixed cross bar 501. The fixed cross bar 501 is fixedly connected between the two movable vertical poles 500. Among the plurality of movable joint components 5, two adjacent movable joint components 5 can freely expand and contract to adjust the overall length of the auxiliary ladder component 3, so as to better cooperate with the angle change between the main ladder component 1 and the ground or the actual use requirements.

[0027] Among them, asFigure 2 and Figure 6 As shown, the main ladder component 1 includes two first vertical rods 100, several first crossbars 101 and two sliding tracks 102. The several first crossbars 101 are fixedly connected at equal intervals between the two first vertical rods 100. When using the main ladder component 1, workers can step on the first crossbars 101 to climb up and down. The two sliding tracks 102 are respectively fixedly connected to the side walls of one side of the two first vertical rods 100. The telescopic ladder component 2 includes two sliding vertical rods 200 and several second crossbars 201. The two sliding vertical rods 200 are respectively slidably connected in the two sliding tracks 102. The several second crossbars 201 are fixedly connected at equal intervals between the two sliding vertical rods 200. When using the telescopic ladder component 2, workers can step on the second crossbars 201 to climb up and down. Fixed connection plates 6 are respectively fixedly connected to the side walls of one side of the two sliding vertical rods 200 away from the main ladder component 1. A groove plate 7 is fixedly connected to the fixed connection plate 6. A rotating member 8 is rotatably connected in the groove plate 7. The two rotating members 8 are respectively fixedly connected to one ends of the two movable vertical rods 500 in one of the movable joint components 5. When extending the use height of the main ladder component 1, only need to slide the telescopic ladder component 2 upward. Then, under the action of the angle control component 4, the auxiliary ladder component 3 can fix the sliding of the telescopic ladder component 2 so that it will not slide back and forth during use.

[0028] Further, as Figures 1-6As shown, fixing slots 9 are respectively formed on the side walls of one side of two movable vertical rods 500, sliding slots 10 are respectively formed on the side walls of both ends of a fixing cross bar 501. The inside of the movable vertical rod 500 is hollow, and the movable vertical rods 500 on different movable joint components 5 are in a mutually sliding state. The fixing component includes a hand push plate 11, a square column 12, a pipe fitting 13, a spring 14 and a cylindrical pin 15. The cylindrical pin 15 is slidably connected in the sliding slot 10. One side wall of the pipe fitting 13 is fixedly connected to one end face of the cylindrical pin 15. The square column 12 is slidably connected in the pipe fitting 13. Both ends of the spring 14 are respectively fixedly connected to the inner bottom wall of the pipe fitting 13 and one end face of the square column 12. The hand push plate 11 is fixedly connected to one end face of the square column 12 away from the pipe fitting 13. Protrusions 16 are respectively arranged on both side walls of one end of the pipe fitting 13 away from the square column 12. The protrusions 16 are slidably connected to the sliding slot 10. One side face of the hand push plate 11 close to the square column 12 is in contact with the side wall of the fixing cross bar 501. One end of the cylindrical pin 15 away from the pipe fitting 13 is movably connected to the fixing slot 9. When the hand push plate 11 slides, under the action of the spring 14, the hand push plate 11 will closely adhere to the side wall of the fixing cross bar 501, increasing the friction force when the hand push plate 11 moves. And the two protrusions 16 enable the pipe fitting 13 to slide stably in the sliding slot 10 without being affected by the spring 14. Among two adjacent movable joint components 5, one movable joint component 5 is pulled out from the other movable joint component 5. During the pulling out process, the two movable vertical rods 500 in one movable joint component 5 will slide out from the movable vertical rods 500 in the other movable joint component 5. When completely pulled out, the hand push plate 11 is pushed, thereby driving the pipe fitting 13 and the square column 12 to move, and further driving the cylindrical pin 15 to move. When one end of the cylindrical pin 15 moves into the fixing slot 9, at this time, the movable vertical rods 500 on two adjacent movable joint components 5 are in a fixed state with each other.

[0029] Furthermore, as Figure 4 and Figure 6As shown in the figure, the angle control component 4 includes a fixed block 400, a rotating positioning plate 401, a threaded block 402, and a rotating bolt 403. The fixed block 400 is fixedly connected to one side wall of one of the movable vertical rods 500 fixedly connected to the rotating member 8. The threaded block 402 is fixedly connected to the side wall of the sliding track 102 away from the second crossbar 201. One end of the rotating positioning plate 401 is rotatably connected to the fixed block 400. A plurality of positioning holes 404 are formed in the rotating positioning plate 401. The rotating bolt 403 is movably threadedly connected to the threaded block 402. The other end of the rotating positioning plate 401 is fixedly connected to the threaded block 402 through the rotating bolt 403. When using the telescopic ladder member 2, when the telescopic ladder member 2 slides on the main ladder member 1, in order to adapt to the extended length of the main ladder member 1, a plurality of movable joint components 5 are used to extend the length of the auxiliary ladder member 3. Then, according to the site range, finally, the auxiliary ladder member 3 is adjusted to an appropriate length. Then, the angle position between the auxiliary ladder member 3 and the main ladder member 1 is determined. Then, the rotating positioning plate 401 is rotated onto the threaded block 402. Then, the rotating bolt 403 is used to pass through the positioning hole 404 corresponding to the threaded block 402 and then threadedly connected to the threaded block 402. At this time, the angle between the auxiliary ladder member 3 and the main ladder member 1 is fixed, and it is ensured that it is stable and reliable during use.

[0030] As Figures 1-6 shown, the principle of the auxiliary leg straight ladder provided in this embodiment is as follows: When in use, first place the main ladder member 1 in a suitable position. Then, slide the telescopic ladder member 2 according to the use requirements to extend the height of the main ladder member 1. Then, according to the situation of the use site, adjust the positional relationship between a plurality of movable joint components 5 to adjust the overall length of the auxiliary ladder member 3. While adjusting the length, according to the actual use site situation, adjust the angle relationship between the auxiliary ladder member 3 and the main ladder member 1. Finally, determine the length of the auxiliary ladder member 3. Then, use the fixing component to fix the adjusted plurality of movable joint components 5, and use the angle control component 4 to fix the angle relationship between the auxiliary ladder member 3 and the main ladder member 1, thereby fixing the telescopic ladder member 2. At this time, the whole device is fixed.

[0031] For example, certain terms are used in the specification and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0032] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the element.

[0033] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. An auxiliary leg ladder, comprising a main ladder member (1), characterized in that: The main ladder member (1) is provided with a telescopic ladder member (2) for extending the length of the main ladder member (1); the telescopic ladder member (2) is provided with an auxiliary ladder member (3) for supporting the main ladder member (1); an angle control component (4) for controlling and fixing the angle is provided between the auxiliary ladder member (3) and the main ladder member (1); The auxiliary ladder member (3) comprises a plurality of movable joint components (5), wherein the plurality of movable joint components (5) are slidably connected to each other, and a fixing assembly for fixing adjacent movable joint components (5) is provided on the movable joint component (5), wherein the movable joint component (5) comprises two movable vertical rods (500) and a fixed cross rod (501), and the fixed cross rod (501) is fixedly connected between the two movable vertical rods (500).

2. The auxiliary leg ladder according to claim 1, characterized in that: The main ladder member (1) comprises two No. 1 vertical poles (100), a plurality of No. 1 horizontal rails (101) and two sliding rails (102), wherein the plurality of No. 1 horizontal rails (101) are fixedly connected at equal distances between the two No. 1 vertical poles (100), and the two sliding rails (102) are fixedly connected to the side walls of one side of the two No. 1 vertical poles (100), respectively.

3. The auxiliary leg ladder according to claim 1, characterized in that: The telescopic ladder component (2) comprises two sliding uprights (200) and a plurality of second crosspieces (201), the two sliding uprights (200) being slidably connected in the two sliding rails (102) respectively, the plurality of second crosspieces (201) being fixedly connected at equal distances between the two sliding uprights (200), and a fixed connecting plate (6) being fixedly connected to the side walls of the two sliding uprights (200) on a side away from the main ladder component (1).

4. The auxiliary leg ladder according to claim 3, characterized in that: A groove plate (7) is fixedly connected to the fixed connection plate (6), a rotating member (8) is rotatably connected inside the groove plate (7), two rotating members (8) are respectively fixedly connected to one end of two movable vertical rods (500) in one of the movable joint components (5), a fixing groove (9) is respectively provided on one side wall of the two movable vertical rods (500), and sliding grooves (10) are respectively provided on the side walls at both ends of the fixed cross bar (501).

5. The auxiliary leg ladder according to claim 1, characterized in that: The fixing assembly comprises a hand push plate (11), a square column (12), a pipe fitting (13), a spring (14) and a cylindrical pin (15); the cylindrical pin (15) is slidably connected in the sliding groove (10); a side wall of the pipe fitting (13) is fixedly connected to an end surface of the cylindrical pin (15); the square column (12) is slidably connected in the pipe fitting (13); two ends of the spring (14) are respectively fixedly connected to the inner bottom wall of the pipe fitting (13) and an end surface of the square column (12); and the hand push plate (11) is fixedly connected to an end surface of the square column (12) away from the pipe fitting (13).

6. The auxiliary leg ladder according to claim 5, characterized in that: The side walls of the pipe fitting (13) at one end away from the square column (12) are respectively provided with protrusions (16), and the protrusions (16) are slidably connected to the sliding groove (10). The side surface of the hand push plate (11) close to the square column (12) is in contact with the side wall of the fixed cross bar (501), and the end of the columnar pin (15) away from the pipe fitting (13) is movably connected to the fixed groove (9).

7. The auxiliary leg ladder according to claim 1, characterized in that: The angle control assembly (4) comprises a fixed block (400), a rotating positioning plate (401), a threaded block (402), and a rotating bolt (403); the fixed block (400) is fixedly connected to a side wall of one of the movable uprights (500) fixedly connected to the rotating member (8); the threaded block (402) is fixedly connected to a side wall of the sliding track (102) away from the second horizontal bar (201); one end of the rotating positioning plate (401) is rotatably connected to the fixed block (400); a plurality of positioning holes (404) are formed on the rotating positioning plate (401); the rotating bolt (403) is movably threadedly connected to the threaded block (402); and the other end of the rotating positioning plate (401) is fixedly connected to the threaded block (402) via the rotating bolt (403).

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