Telescopic ladder stand

Abstract

The utility model belongs to the technical field of crawling ladders, and particularly relates to a telescopic crawling ladder which comprises a bottom plate. A telescopic mechanism is arranged on the top side of the bottom plate, a fixing mechanism is arranged on the telescopic mechanism, portable mechanisms are arranged at the two ends of the bottom plate, the telescopic mechanism comprises a mounting seat, a supporting rod is rotationally mounted on the mounting seat, and a connecting rod is rotationally connected to the top end of the supporting rod through a pin shaft in a matched mode. A fixed plate is installed at the bottom end of the outer side of the supporting rod in a penetrating mode, a limiting seat is installed at the bottom end of the inner side of the supporting rod in a penetrating mode, a pedal is fixed to the inner side of the limiting seat, and a movable plate is slidably installed on the inner side of the supporting rod. The supporting rod and the connecting rod rotate around the fixing plate, the connecting position of the ladder stand is folded into a rhombus, and therefore the ladder stand is folded, the occupied space of the ladder stand is reduced, the ladder stand is more convenient to carry, and the problems that an existing ladder stand is large in size and inconvenient to carry about after being folded are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ladders, in particular to a telescopic ladder. Background Art

[0002] Ladders are mainly used for tasks that require climbing, such as cleaning glass windows, decoration or maintenance. They are usually made of lightweight but strong materials such as aluminum alloys. They can provide support to users and can be used for operations at high places indoors or outdoors.

[0003] A retractable ladder with announcement number CN217354234U is composed of ladder one as the main body, ladder two being slidably installed on ladder one, a mounting box being fixedly installed on the bottom end of the back side of the ladder, sockets being symmetrically provided on the bottom side of the mounting box, plug plates being symmetrically fixedly installed on the bottom end of the back side of ladder two, plug holes being provided on the plug plates, movable blocks being symmetrically slidably provided on the inner side of the mounting box, a latch being fixedly installed on one side of the movable block, and mounting plates being symmetrically fixedly installed in the mounting box. The retractable ladder can prevent it from being used by idle personnel by adding locks, thereby increasing its practicality.

[0004] There are still problems in the telescopic ladder described above. The telescopic ladder has a lock, and its volume is large after being folded, which is inconvenient to carry around, resulting in a reduction in its scope of application. Therefore, a telescopic ladder is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the telescopic ladder is large in size after being folded, is inconvenient to carry around, and results in a reduced scope of application, the utility model provides a telescopic ladder.

[0006] The technical solution adopted by the utility model to solve its technical problem is: the telescopic ladder described in the utility model includes a base plate; a telescopic mechanism is arranged on the top side of the base plate, a fixing mechanism is arranged on the telescopic mechanism, portable mechanisms are arranged at both ends of the base plate, and a mounting seat is fixed on the top side of the base plate.

[0007] Preferably, the telescopic mechanism includes a mounting seat, a support rod rotatably mounted on the mounting seat, the top of the support rod is rotatably connected to the connecting rod by a pin shaft, a fixing plate is inserted through the bottom outer end of the support rod, and the fixing plate is rotatably connected to the support rod and the connecting rod, a limiting seat is inserted through the bottom inner end of the support rod, and the limiting seat is fixedly connected to the fixing plate, a pedal is fixed to the inner side of the limiting seat, and a movable plate is slidably mounted on the inner side of the support rod, the limiting seat is rotatably connected to the support rod and the connecting rod, the movable plate is located between the pedals on both sides, and the movable plate can be buckled on the top side of the pedal, and the elongation and shortening of the ladder can be controlled by folding the support rod and the connecting rod into a diamond-shaped structure, so that the ladder can reduce its occupied volume without changing its height, making it more convenient to carry and having a wider range of applications.

[0008] Preferably, the fixing mechanism includes a movable plate, connecting seats are symmetrically fixed at both ends of the movable plate, an insertion rod is inserted and installed on the inner side of the connecting seat, a limiting cap is fixed to one end of the insertion rod, a spring is fixedly connected between the limiting cap and the connecting seat, and the spring is sleeved on the insertion rod, fixing holes are provided at the top end of the support rod and the bottom end of the connecting rod near the edge position, one end of the insertion rod is inserted and installed on the inner side of the fixing hole, hinges are symmetrically fixed at both ends of the top side of the base plate, which are fixed by the insertion rod and the spring, and the object can be driven to move by the elastic force of the spring itself, and it is not easy to loosen after being fixed, so as to prevent the ladder from loosening and shortening during use.

[0009] Preferably, the portable mechanism includes a hinge, a shell is fixed at one end of the hinge, a card seat is fixed at one end of the top side of the shell on one side, and a rotating seat is fixed at one end of the top side of the shell on the other side. A card block is rotatably installed on the inner side of the rotating seat, and the card block is buckled on the inner side of the card seat. A handle is fixed at the middle position of the top side of the shell. Through the structure of the bottom plate and the shell, the ladder can be stored into a box after use, which is more convenient to carry and move.

[0010] The utility model is beneficial in that:

[0011] The utility model adopts a telescopic climbing ladder structure design, by arranging a telescopic mechanism, when in use, the bottom plate is placed on the ground and the shell is opened, then the support rod and the connecting rod are stretched to make them rotate around the fixed plate, so that the support rod and the connecting rod on the same side are tightly fitted, then the movable plate is pulled out of the limit seat, so that it slides to the connection point where the top end of the support rod and the bottom end of the connecting rod are connected, and it is fixed, at this time the ladder is in the unfolded state, after use, the fixation of the connection point between the top end of the support rod and the bottom end of the connecting rod is released, the movable plate is buckled on the top side of the pedal, then the connection point between the top end of the support rod and the bottom end of the connecting rod is separated to both sides, the support rod and the connecting rod are rotated around the fixed plate, and the connection point of the ladder is folded into a diamond shape, so that the ladder is folded, thereby reducing the occupied volume of the ladder, making it more convenient to carry, and solving the problem that the existing ladder is large in size after being folded and inconvenient to carry.

[0012] 2. The utility model adopts a structural design of a telescopic ladder and sets a fixing mechanism. When the ladder is extended and unfolded, the movable plate is moved to the connection between the top end of the support rod and the bottom end of the connecting rod. At this time, the insertion rod is moved to the fixing hole. At this time, the spring is in a stretched state. The spring pulls the limit cap to move through its own elastic force, so that the insertion rod is inserted and installed to the inside of the fixing hole, thereby fixing the connection position between the top end of the support rod and the bottom end of the connecting rod, so that the ladder will not loosen or shorten during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure;

[0015] Figure 2 It is a cross-sectional view of the telescopic mechanism from a top view of the three-dimensional structure;

[0016] Figure 3 It is a side view of the three-dimensional structure of the fixing mechanism;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the portable mechanism;

[0018] Figure 5 It is a schematic diagram of the overall three-dimensional structure when viewed from above.

[0019] In the figure: 1. bottom plate; 2. mounting seat; 3. support rod; 4. connecting rod; 5. fixing plate; 6. pedal; 7. limit seat; 8. movable plate; 9. connecting seat; 10. plug rod; 11. limit cap; 12. spring; 13. fixing hole; 14. hinge; 15. shell; 16. holder; 17. rotating seat; 18. block; 19. handle; 20. rubber pad. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4As shown, a telescopic ladder comprises a bottom plate 1; a telescopic mechanism is arranged on the top side of the bottom plate 1, a fixing mechanism is arranged on the telescopic mechanism, portable mechanisms are arranged at both ends of the bottom plate 1, and a mounting seat 2 is fixed on the top side of the bottom plate 1;

[0022] See also Figure 2 As shown, the telescopic mechanism includes a mounting seat 2, a support rod 3 is rotatably mounted on the mounting seat 2, the top of the support rod 3 is rotatably connected to the connecting rod 4 through a pin shaft, a fixing plate 5 is inserted through the bottom end of the outer side of the support rod 3, and the fixing plate 5 is rotatably connected to the support rod 3 and the connecting rod 4, a limiting seat 7 is inserted through the bottom end of the inner side of the support rod 3, and the limiting seat 7 is fixedly connected to the fixing plate 5, a pedal 6 is fixed to the inner side of the limiting seat 7, a movable plate 8 is slidably mounted on the inner side of the support rod 3, the limiting seat 7 is rotatably connected to the support rod 3 and the connecting rod 4, the movable plate 8 is located between the pedals 6 on both sides, and the movable plate 8 can be buckled on the top side of the pedal 6; when working, when encountering the problem that the existing ladder is large in size after being folded up and is inconvenient to carry, through The structure of the telescopic mechanism is that when in use, the base plate 1 is placed on the ground and the shell 15 is opened, then the support rod 3 and the connecting rod 4 are stretched to make them rotate around the fixed plate 5 so that the support rod 3 and the connecting rod 4 on the same side are tightly fitted, then the movable plate 8 is pulled out of the limit seat 7 to make it slide to the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4 and fix it. At this time, the ladder is in the unfolded state. After use, the fixation of the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4 is released, and the movable plate 8 is re-fastened on the top side of the pedal 6, then the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4 is separated to both sides, so that the support rod 3 and the connecting rod 4 are rotated around the fixed plate 5, and the connection of the ladder is folded into a diamond shape, thereby folding the ladder, thereby reducing the occupied volume of the ladder and making it more convenient to carry.

[0023] See also Figure 3As shown, the fixing mechanism includes a movable plate 8, and a connecting seat 9 is symmetrically fixed at both ends of the movable plate 8. A plug rod 10 is inserted and installed inside the connecting seat 9. A limiting cap 11 is fixed at one end of the plug rod 10. A spring 12 is fixedly connected between the limiting cap 11 and the connecting seat 9, and the spring 12 is sleeved on the plug rod 10. A fixing hole 13 is opened at the top end of the support rod 3 and the bottom end of the connecting rod 4 near the edge position. One end of the plug rod 10 is inserted and installed inside the fixing hole 13. The top side of the bottom plate 1 is symmetrically fixed with hinges at both ends. Chain 14; during operation, when the ladder structure is not stable enough, the ladder is extended and unfolded through the structure of the fixing mechanism, and the movable plate 8 is moved to the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4. At this time, the insertion rod 10 is moved to the fixing hole 13. At this time, the spring 12 is in a stretched state. The spring 12 pulls the limit cap 11 to move through its own elastic force, so that it pushes the insertion rod 10 to be inserted and installed to the inside of the fixing hole 13, thereby fixing the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4, so that the ladder will not loosen or shorten during use.

[0024] See also Figure 4 As shown, the portable mechanism includes a hinge 14, a shell 15 is fixed at one end of the hinge 14, a holder 16 is fixed at one end of the top side of the shell 15 on one side, and a rotating seat 17 is fixed at one end of the top side of the shell 15 on the other side. A clamping block 18 is rotatably installed on the inner side of the rotating seat 17, and the clamping block 18 is buckled on the inner side of the holder 16. A handle 19 is fixed at the middle position of the top side of the shell 15; during work, if the ladder is inconvenient to carry, the ladder can be retracted through the structure of the portable mechanism, and the shells 15 on both sides are merged and buckled on the top side of the base plate 1. At this time, the ladder is located on the inner side of the shell 15, and then the clamping block 18 is pushed to rotate around the rotating seat 17 so that the clamping block 18 is buckled on the inner side of the holder 16, thereby fixing the shells 15 on both sides in connection. At this time, the ladder can be driven to move with the cooperation of the handle 19, making it more convenient to carry.

[0025] See also Figure 5 As shown, a rubber pad 20 is fixed to the bottom side of the base plate 1; during operation, when the ladder is placed on the ground and is prone to slipping and falling, the structure of the rubber pad 20 can increase the friction between the base plate 1 and the ground, thereby preventing the ladder from slipping and falling during use.

[0026] Working principle: ladders are mainly used for tasks that require climbing, such as cleaning glass windows, decoration or maintenance. They are usually made of lightweight but strong materials such as aluminum alloy, which can provide support for users and can be used for operations at high places indoors or outdoors. Existing telescopic ladders have added locks, and their size is large after being folded, which is inconvenient to carry with you, resulting in a reduced scope of application. In order to solve this problem, a telescopic mechanism and a fixing mechanism are set, the bottom plate 1 is placed on the ground, the block 18 is pulled out of the seat 16, and the shell 15 is opened, and then the support rod 3 and the connecting rod 4 are stretched to rotate around the fixed plate 5 so that the support rod 3 and the connecting rod 4 on the same side are tightly fitted, and then the movable plate 8 is pulled out of the limit seat 7 to slide it to the connection between the top end of the support rod 3 and the bottom end of the connecting rod 4. At this time, the insertion rod 10 moves to the fixing hole 13, and the spring 12 is in a stretched state. The spring 12 pulls the limit cap through its own elastic force After the ladder is lifted up, the ladder 10 is moved to the upper and lower parts of the ladder 10 so that the ladder 10 can be moved to the upper and lower parts of the ladder 10. After the ladder is lifted up, the ladder 10 can be moved to the upper and lower parts of the ladder 10 so that the ladder 10 can be moved to the upper and lower parts of the ladder 10.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A telescopic ladder, characterized in that: It comprises a bottom plate (1); a telescopic mechanism is arranged on the top side of the bottom plate (1); a fixing mechanism is arranged on the telescopic mechanism; portable mechanisms are arranged at both ends of the bottom plate (1); and a mounting seat (2) is fixed on the top side of the bottom plate (1); The telescopic mechanism comprises a mounting seat (2), a support rod (3) is rotatably mounted on the mounting seat (2), the top end of the support rod (3) is rotatably connected to a connecting rod (4) through a pin shaft, a fixing plate (5) is inserted and installed at the bottom end of the outer side of the support rod (3), and the fixing plate (5) is rotatably connected to the support rod (3) and the connecting rod (4), a limiting seat (7) is inserted and installed at the bottom end of the inner side of the support rod (3), and the limiting seat (7) is fixedly connected to the fixing plate (5), a pedal (6) is fixed on the inner side of the limiting seat (7), and a movable plate (8) is slidably installed on the inner side of the support rod (3).

2. A telescopic ladder according to claim 1, characterized in that: The limiting seat (7) is rotatably connected to the supporting rod (3) and the connecting rod (4); the movable plate (8) is located between the pedals (6) on both sides, and the movable plate (8) can be buckled on the top side of the pedal (6).

3. A telescopic ladder according to claim 2, characterized in that: The fixing mechanism comprises a movable plate (8), connecting seats (9) are symmetrically fixed at both ends of the movable plate (8), an insertion rod (10) is inserted and installed inside the connecting seat (9), a limiting cap (11) is fixed at one end of the insertion rod (10), a spring (12) is fixedly connected between the limiting cap (11) and the connecting seat (9), and the spring (12) is sleeved on the insertion rod (10).

4. A telescopic ladder according to claim 3, characterized in that: A fixing hole (13) is provided at the top end of the support rod (3) and the bottom end of the connecting rod (4) near the edge, one end of the insertion rod (10) is inserted and installed inside the fixing hole (13), and hinges (14) are symmetrically fixed at both ends of the top side of the bottom plate (1).

5. A telescopic ladder according to claim 4, characterized in that: The portable mechanism comprises a hinge (14), a housing (15) is fixed to one end of the hinge (14), a card seat (16) is fixed to one end of the top side of the housing (15) on one side, and a rotating seat (17) is fixed to one end of the top side of the housing (15) on the other side.

6. A telescopic ladder according to claim 5, characterized in that: A clamping block (18) is rotatably mounted on the inner side of the rotating seat (17), and the clamping block (18) is buckled on the inner side of the clamping seat (16). A handle (19) is fixed at the middle position of the top side of the shell (15).

Images