Extension ladder double-rib treading pipe with support

Abstract

The utility model belongs to the technical field of extension ladder treading tubes, and discloses an extension ladder double-rib treading tube with a support, which comprises ladder legs, first treading tubes and the support, the first treading tubes are arranged between the ladder legs at equal intervals, the supports are arranged at two ends of the first treading tubes in a penetrating manner, the supports are used for controlling fixed connection between the first treading tubes and the ladder legs, and the first treading tubes are connected with the ladder legs. The support is in a U shape, through holes are symmetrically formed in the two sides of the surface of the support, and screws are arranged in the through holes in a penetrating mode. During use, the support is connected to the two ends of the first treading pipe in a sleeved mode, the support is fixed to the two ends of the first treading pipe through the rivet turning technology, then the first treading pipe is moved, and the first treading pipe is fixed to the support through the screw. And after the through holes in the bracket are aligned with the mounting holes, the screws penetrate through the through holes and are embedded into the mounting holes for fixation, so that direct contact between the pedal pipes and the ladder legs is avoided, and the problem that the joints of the pedal pipes and the ladder legs are extremely easy to rub at present is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of telescopic ladder tread pipes, and in particular relates to a telescopic ladder with a bracket and double-ribbed tread pipes. Background Art

[0002] In a traditional telescopic ladder, the tread tube is directly embedded in the small hole on the ladder leg and then fixed by integrated riveting. As a result, when in use, the tread tube is subjected to downward force and repeatedly rubs against the ladder leg, which greatly increases the wear of the ladder leg. At the same time, the integrated riveting connection method limits the hardness of the tread tube, which makes the load-bearing effect of the tread tube relatively general and easily damaged. Therefore, a telescopic ladder with a bracket and a double-ribbed tread tube is designed to solve the current problems of easy friction at the connection between the tread tube and the ladder leg and the relatively general load-bearing effect of the tread tube and easy damage. Utility Model Content

[0003] The utility model aims to provide a telescopic ladder with a bracket and a double-ribbed tread pipe, so as to solve the problems in the above background technology that the connection between the tread pipe and the ladder leg is very easy to rub and the load-bearing effect of the tread pipe is relatively general and very easy to be damaged.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic ladder with a bracket and a double-ribbed tread pipe comprises ladder legs, a first tread pipe and a bracket, wherein the first tread pipes are arranged at equal intervals between the ladder legs, and brackets are arranged at both ends of the first tread pipe, and the brackets are used to control the fixed connection between the first tread pipe and the ladder legs.

[0005] Preferably, the bracket is U-shaped, and through holes are symmetrically opened on both sides of the bracket surface, screws are penetrated in the through holes, and mounting holes are symmetrically opened at equal intervals on the side walls of the ladder legs, the screws pass through the bracket through the through holes, and the screw ends are embedded in the mounting holes.

[0006] Preferably, the distance between the ladder legs is greater than the length of the first tread tube, blocking rings are symmetrically installed on both sides of the surface of the first tread tube, and both ends of the first tread tube pass through the bracket, the side walls of the blocking ring are in contact with the outer wall of the bracket, and the pipe openings on both sides of the first tread tube are riveted to the bracket by sleeve-type riveting.

[0007] Preferably, a second tread tube is arranged inside the first tread tube, and the inner wall of the first tread tube and the outer wall of the second tread tube are in close contact with each other, the length of the second tread tube is smaller than that of the first tread tube, and both ends of the second tread tube pass through the bracket, and the second tread tube is used to increase the load-bearing effect of the first tread tube.

[0008] Preferably, reinforcing ribs are symmetrically installed on both sides of the inner wall of the second tread tube, and the upper and lower ends of the reinforcing ribs are fixedly connected to the upper and lower sides of the inner wall of the second tread tube.

[0009] Preferably, reinforcing ribs are symmetrically installed on both sides of the inner wall of the second tread tube, and the upper and lower ends of the reinforcing ribs are fixedly connected to the upper and lower sides of the inner wall of the second tread tube.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model is provided with a bracket, a screw and a first treadle tube, etc. When in use, the bracket is sleeved on both ends of the first treadle tube, and the bracket is fixed to both ends of the first treadle tube by a riveting process. Then, the first treadle tube is moved so that the through hole on the bracket is aligned with the mounting hole, and the screw is passed through the through hole and embedded into the mounting hole to fix it, thereby eliminating direct contact between the treadle tube and the ladder leg, and solving the problem of easy friction at the connection between the treadle tube and the ladder leg.

[0012] (2) The utility model is provided with a second pedal tube, a first pedal tube and reinforcing ribs. When in use, the second pedal tube is used in conjunction with the first pedal tube to increase the overall thickness of the pedal tube. At the same time, the hollow part in the middle of the pedal tube is supported by the reinforcing ribs. In addition, since the first pedal tube does not need to be riveted, a material with higher hardness can be selected, thereby achieving the purpose of improving the load-bearing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is the appearance diagram of the utility model;

[0015] Figure 3 It is a side view of the bracket of the utility model;

[0016] Figure 4 for Figure 1 A in the enlarged view;

[0017] In the figure: 1. ladder leg; 2. screw; 3. positioning block; 4. reinforcing rib; 5. mounting hole; 6. bracket; 7. first pedal tube; 8. second pedal tube; 9. anti-slip sleeve; 10. blocking ring; 11. through hole; 12. limit hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3As shown, the utility model provides the following technical solutions: a telescopic ladder with a bracket and a double-ribbed tread tube comprises a ladder leg 1, a first tread tube 7 and a bracket 6, the first tread tube 7 is arranged at equal intervals between the ladder legs 1, and the bracket 6 is penetrated at both ends of the first tread tube 7, and the bracket 6 is used to control the fixed connection between the first tread tube 7 and the ladder leg 1, the bracket 6 is U-shaped, and through holes 11 are symmetrically opened on both sides of the surface of the bracket 6, screws 2 are penetrated in the through holes 11, mounting holes 5 are symmetrically opened on the side walls of the ladder legs 1 at equal intervals, the screws 2 penetrate the bracket 6 through the through holes 11, and the ends of the screws 2 are embedded in the mounting holes, the distance between the ladder legs 1 is greater than the length of the first tread tube 7, blocking rings 10 are symmetrically installed on both sides of the surface of the first tread tube 7, and the two ends of the first tread tube 7 penetrate the bracket 6, the side walls of the blocking ring 10 are in contact with the outer wall of the bracket 6, and the pipe openings on both sides of the first tread tube 7 are riveted to the bracket 6 by sleeve-type riveting.

[0020] Through the above technical scheme: when in use, the bracket 6 is sleeved on the two ends of the first tread tube 7, so that the side wall thereof contacts the blocking ring 10 to complete the sleeve positioning, and then the pipe mouth of the first tread tube 7 is squeezed outward by the riveting process to expand the pipe mouth diameter, and then the bracket 6 is restricted and fixed between the blocking ring 10 and the pipe mouth, so that the bracket 6 is fixedly installed at the two ends of the first tread tube 7, and then the first tread tube 7 is moved to between the ladder legs 1, and after guiding the through hole 11 on the bracket 6 to be aligned with the mounting hole 5, the screw 2 is passed through the through hole 11 and embedded into the mounting hole 5 for fixing. Since the distance between the ladder legs 1 is greater than the length of the first tread tube 7, direct contact between the tread tube and the ladder leg 1 is eliminated, thereby solving the problem that the connection between the current tread tube and the ladder leg 1 is extremely easy to rub.

[0021] See also Figure 1-Figure 4 As shown, a second treadle tube 8 is arranged inside the first treadle tube 7, and the inner wall of the first treadle tube 7 and the outer wall of the second treadle tube 8 are in close contact with each other. The length of the second treadle tube 8 is smaller than that of the first treadle tube 7, and both ends of the second treadle tube 8 pass through the bracket 6. The second treadle tube 8 is used to increase the load-bearing effect of the first treadle tube 7. Reinforcing ribs 4 are symmetrically installed on both sides of the inner wall of the second treadle tube 8. The upper and lower ends of the reinforcing ribs 4 are fixedly connected to the upper and lower sides of the inner wall of the second treadle tube 8. An anti-slip sleeve 9 is sleeved on the first treadle tube 7, and positioning blocks 3 are symmetrically installed on the outer wall surface of the first treadle tube 7 at equal intervals. Limiting holes 12 are symmetrically opened on the anti-slip sleeve 9 at equal intervals. The positioning blocks 3 correspond to the limiting holes 12 one by one, and the positioning blocks 3 are embedded in the limiting holes 12.

[0022] Through the above technical solution: when in use, the second pedal tube 8 is used to cooperate with the first pedal tube 7 to increase the overall thickness of the pedal tube, and the hollow part in the middle of the pedal tube is supported by the reinforcing rib 4. Since the first pedal tube 7 does not need to be riveted to the bracket 6, it can be made of a material with higher hardness, and cooperate with the first pedal tube 7 and the reinforcing rib 4 to further improve the load-bearing effect. At the same time, before use, the elastic anti-slip sleeve 9 can be expanded so that it can be sleeved on the outside of the first pedal tube 7 after passing through the bracket 6, forcing the positioning block 3 to be embedded in the limiting hole 12, so that the anti-slip sleeve 9 cannot move freely on the surface of the first pedal tube 7, and then the anti-slip sleeve 9 is used to improve the anti-slip property of the pedal tube surface, thereby improving the safety of the equipment when in use.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic ladder with a bracket and double-ribbed tread pipe, characterized in that: The invention comprises ladder legs (1), first tread pipes (7) and brackets (6), wherein the first tread pipes (7) are arranged at equal intervals between the ladder legs (1), brackets (6) are arranged through both ends of the first tread pipes (7), and the brackets (6) are used to control the fixed connection between the first tread pipes (7) and the ladder legs (1).

2. The telescopic ladder with bracket and double-ribbed tread pipe according to claim 1, characterized in that: The bracket (6) is U-shaped, and through holes (11) are symmetrically provided on both sides of the surface of the bracket (6), screws (2) are provided through the through holes (11), and mounting holes (5) are symmetrically provided on the side walls of the ladder legs (1) at equal intervals, the screws (2) pass through the bracket (6) through the through holes (11), and the ends of the screws (2) are embedded in the mounting holes.

3. The telescopic ladder with bracket and double-ribbed tread pipe according to claim 2, characterized in that: The distance between the ladder legs (1) is greater than the length of the first tread tube (7); blocking rings (10) are symmetrically mounted on both sides of the surface of the first tread tube (7); both ends of the first tread tube (7) pass through the bracket (6); the side wall of the blocking ring (10) is in contact with the outer wall of the bracket (6); and the pipe openings on both sides of the first tread tube (7) are riveted to the bracket (6) by means of sleeve-type riveting.

4. The telescopic ladder with bracket and double-ribbed tread pipe according to claim 3, characterized in that: A second treadle tube (8) is arranged inside the first treadle tube (7), and the inner wall of the first treadle tube (7) and the outer wall of the second treadle tube (8) are in close contact with each other. The length of the second treadle tube (8) is shorter than that of the first treadle tube (7), and both ends of the second treadle tube (8) pass through the bracket (6).

5. The telescopic ladder with bracket and double-ribbed tread pipe according to claim 4, characterized in that: Reinforcing ribs (4) are symmetrically mounted on both sides of the inner wall of the second tread tube (8), and the upper and lower ends of the reinforcing ribs (4) are fixedly connected to the upper and lower sides of the inner wall of the second tread tube (8).

6. The telescopic ladder with bracket and double-ribbed tread pipe according to claim 1, characterized in that: The first tread tube (7) is sleeved with an anti-slip sleeve (9), and positioning blocks (3) are symmetrically installed on the outer wall surface of the first tread tube (7) at equal intervals, and limiting holes (12) are symmetrically arranged on the anti-slip sleeve (9) at equal intervals, the positioning blocks (3) correspond to the limiting holes (12) one by one, and the positioning blocks (3) are embedded in the limiting holes (12).

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