Portable safety engineering ladder

Abstract

The utility model belongs to the technical field of engineering ladders, and particularly relates to a portable safety engineering ladder which comprises a main ladder and a limiting device, the surface of the main ladder is rotatably connected with a supporting plate, and the inner wall of the supporting plate is rotatably connected with an auxiliary ladder; limiting devices are arranged on the surfaces of the main ladder and the auxiliary ladder and comprise main sleeves and auxiliary sleeves, the surfaces of the main ladder and the auxiliary ladder are sleeved with the main sleeves and the auxiliary sleeves respectively, rotating rods are rotationally connected to the two sides of the main sleeves and located on the surfaces of the auxiliary sleeves, inserting columns are slidably connected to the positions, close to the rotating rods, of the inner walls of the sleeves, and auxiliary devices are arranged on the two sides of the main ladder and the auxiliary ladder; the auxiliary device comprises a supporting block, the side wall of the supporting block is fixedly connected with the side wall of the main ladder, the surface of the supporting block is rotationally connected with a storage rod, and the inner wall of the storage rod is in threaded connection with a threaded rod; the abrasion between the main ladder and the auxiliary ladder can be reduced by arranging the main sleeve and the auxiliary sleeve, and the angle between the main ladder and the auxiliary ladder can be limited by the rotating rod and the inserting column, so that the stability during use is improved.

Description

Technical Field

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

[0002] As the name suggests, an engineering ladder is a ladder used for engineering purposes. Nowadays, the general engineering ladder family has expanded. It is no longer like the single herringbone ladder or straight ladder before. It has a variable structure, adjustable height, and variable shape, making it a ladder that is truly suitable for modern engineering.

[0003] A Chinese patent application CN210105737U discloses a portable safety engineering ladder, the technical solution of which is as follows: by setting a first folding frame and a second folding frame, the first folding frame and the second folding frame are folded outward through a folding axis, the ladder is folded and stored, and the ladder is lifted up through a hand strap, so that the device can have a certain degree of portability when in use, and the volume of the ladder is reduced and easy to move. By setting a handle and a hook, the handle is moved through a movable axis, and the hook is hung on the hook through the hook on the handle, and the handle is pressed downward so that the hook and the hook are locked, so that when the device is used, it has strong support after being unfolded to prevent folding during use.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when construction is required, an engineering ladder is needed, and most engineering ladders are herringbone ladders. Since most of them are used by one person, the engineering ladder is likely to be unstable and easy to move around during actual operation; therefore, a portable safety engineering ladder is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a portable safety engineering ladder described in the utility model comprises a main ladder and a limiting device, the surface of the main ladder is rotatably connected with a support plate, and the inner wall of the support plate is rotatably connected with an auxiliary ladder; the surfaces of the main ladder and the auxiliary ladder are provided with limiting devices, and the limiting devices comprise a main sleeve and an auxiliary sleeve, the main sleeve and the auxiliary sleeve are respectively sleeved on the surfaces of the main ladder and the auxiliary ladder, both sides of the main sleeve are rotatably connected with a rotating rod, the rotating rod is located on the surface of the auxiliary sleeve, and a plug-in column is slidably connected to the position of the inner wall of the auxiliary sleeve near the rotating rod, and the plug-in column is inserted in the rotating rod and the inner wall of the auxiliary sleeve. After the main ladder and the auxiliary ladder are arranged, the rotating rod is rotated to rotate to the surface of the auxiliary sleeve, and then the plug-in column is pushed to insert the plug-in column into the rotating rod and the inner wall of the auxiliary sleeve. By setting the main sleeve and the auxiliary sleeve, the wear of the main ladder and the auxiliary ladder can be reduced, and the rotating rod and the plug-in column can limit the position between the main ladder and the auxiliary ladder.

[0007] Preferably, a limiting block is fixedly connected to the surface of the secondary sleeve near the position of the plug post, and the surface of the limiting block is slidably connected to the inner wall of the plug post. When the plug post slides, the plug post will slide on the surface of the limiting block, and the limiting block can limit the position of the plug post.

[0008] Preferably, the side wall of the plug is fixedly connected with a connecting block, and the side wall of the connecting block and the surface of the secondary sleeve are fixedly connected with a spring. When the connecting block is released, the spring will rebound, and the spring drives the connecting block and the plug to slide. By setting the spring, the connecting block and the plug can be driven to move.

[0009] Preferably, a handle is fixedly connected to one end of the connecting block away from the plug post, a plurality of insertion holes are opened on the surface of the rotating rod, the plug post is inserted into the inner wall of the insertion hole of the rotating rod, and the opening of the insertion hole can accommodate the plug post.

[0010] Preferably, auxiliary devices are provided on both sides of the main ladder and the auxiliary ladder, and the auxiliary devices include a support block, the side walls of the support block are fixedly connected to the side walls of the main ladder, the surface of the support block is rotatably connected to a storage rod, and the inner wall of the storage rod is threadedly connected to a threaded rod. After the storage rod is rotated to a suitable angle, the threaded rod is rotated to allow the threaded rod to rotate on the inner wall of the storage rod, and the threaded rod is against the ground. By arranging the support block, the storage rod and the threaded rod, the main ladder can be auxiliary supported to a certain extent.

[0011] Preferably, a dome is fixedly connected to the surface of the threaded rod, and a limit pin is threadedly connected to the inner wall of the support block and the storage rod. After the storage rod is rotated to a suitable angle, the limit pin is rotated to the support block and the inner wall of the storage rod, and the dome is pressed against the ground. By setting the limit pin, the angle of the storage rod can be limited.

[0012] The utility model is beneficial in that:

[0013] 1. When the main ladder and the auxiliary ladder need to be used, the main sleeve and the auxiliary sleeve are respectively sleeved on the surface of the main ladder and the auxiliary ladder, and then the main ladder and the auxiliary ladder are rotated to place the main ladder and the auxiliary ladder to a suitable angle, and then the handle is pulled to make the handle drive the connecting block to slide, and the connecting block drives the plug post to slide, and the plug post slides on the surface of the limit block, and at the same time the connecting block also drives the spring to stretch, and then the rotating rod is rotated to make the rotating rod rotate to the surface of the auxiliary sleeve, and then the handle is released and the spring will rebound, and the spring drives the connecting block and the plug post to slide, and the plug post is inserted into the inner wall of the insertion hole of the rotating rod and the inner wall of the auxiliary sleeve. By setting the main sleeve and the auxiliary sleeve, the wear between the main ladder and the auxiliary ladder can be reduced, and the rotating rod and the plug post can limit the angle between the main ladder and the auxiliary ladder, thereby increasing the stability during use.

[0014] 2. After the main ladder and the auxiliary ladder are placed, the utility model rotates the storage rod to allow the storage rod to rotate on the surface of the support block. When the storage rod rotates, it will drive the threaded rod to rotate, and then the limit pin is rotated to the storage rod and the inner wall of the support block. Then the threaded rod is rotated to allow the threaded rod to rotate on the inner wall of the storage rod. The threaded rod drives the dome to move, and the dome is on the ground. By arranging the support block, the storage rod, the threaded rod and the dome, the main ladder or the auxiliary ladder can be auxiliary supported, and the limit pin can limit the angle of the storage rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a main ladder in a portable safety engineering ladder;

[0017] Figure 2 A portable safety engineering ladder Figure 1 A schematic diagram of the structure at A;

[0018] Figure 3 It is a schematic diagram of the side view structure of the main ladder in a portable safety engineering ladder;

[0019] Figure 4 A portable safety engineering ladder Figure 3 Schematic diagram of the structure at point B.

[0020] In the figure: 1. main ladder; 2. support plate; 3. auxiliary ladder; 4. limit device; 41. main sleeve; 42. rotating rod; 43. auxiliary sleeve; 44. plug column; 45. limit block; 46. connecting block; 47. handle; 48. spring; 49. socket; 5. auxiliary device; 51. support block; 52. storage rod; 53. threaded rod; 54. dome; 55. limit pin. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4As shown, a portable safety engineering ladder comprises a main ladder 1 and a limiting device 4, wherein the surface of the main ladder 1 is rotatably connected to a support plate 2, and the inner wall of the support plate 2 is rotatably connected to a secondary ladder 3; the surfaces of the main ladder 1 and the secondary ladder 3 are provided with limiting devices 4, wherein the limiting devices 4 comprise a main sleeve 41 and a secondary sleeve 43, wherein the main sleeve 41 and the secondary sleeve 43 are respectively sleeved on the surfaces of the main ladder 1 and the secondary ladder 3, wherein both sides of the main sleeve 41 are rotatably connected to a rotating rod 42, wherein the rotating rod 42 is located on the surface of the secondary sleeve 43, and the inner wall of the secondary sleeve 43 is close to the rotating rod 42 The sliding connection is provided with a plug post 44, which is inserted into the inner wall of the rotating rod 42 and the auxiliary sleeve 43; when working, the main sleeve 41 and the auxiliary sleeve 43 are respectively sleeved on the surface of the main ladder 1 and the auxiliary ladder 3. After the main ladder 1 and the auxiliary ladder 3 are arranged, the rotating rod 42 is rotated to make the rotating rod 42 rotate to the surface of the auxiliary sleeve 43, and then the plug post 44 is pushed to make the plug post 44 inserted into the rotating rod 42 and the inner wall of the auxiliary sleeve 43. By setting the main sleeve 41 and the auxiliary sleeve 43, the wear of the main ladder 1 and the auxiliary ladder 3 can be reduced, and the rotating rod 42 and the plug post 44 can limit the position between the main ladder 1 and the auxiliary ladder 3.

[0023] The surface of the secondary sleeve 43 is fixedly connected to a limiting block 45 near the plug post 44, and the surface of the limiting block 45 is slidably connected to the inner wall of the plug post 44; when working, the plug post 44 will slide on the surface of the limiting block 45, and the limiting block 45 can limit the position of the plug post 44.

[0024] The side wall of the plug post 44 is fixedly connected with a connecting block 46, and the side wall of the connecting block 46 and the surface of the secondary sleeve 43 are fixedly connected with a spring 48; during operation, the connecting block 46 is pulled to allow the connecting block 46 to drive the plug post 44 to slide, and at the same time, the connecting block 46 will also drive the spring 48 to stretch. When the plug post 44 is used, the spring 48 will rebound when the connecting block 46 is released, and the spring 48 drives the connecting block 46 and the plug post 44 to slide. By setting the spring 48, the connecting block 46 and the plug post 44 can be driven to move.

[0025] The end of the connecting block 46 away from the plug post 44 is fixedly connected with a handle 47, and a plurality of plug holes 49 are provided on the surface of the rotating rod 42, and the plug post 44 is inserted into the inner wall of the plug hole 49 of the rotating rod 42; when working, the handle 47 is pulled to make the handle 47 drive the connecting block 46 to slide, and when the plug post 44 slides, the plug post 44 is inserted into the inner wall of the plug hole 49 of the rotating rod 42, and the opening of the plug hole 49 can accommodate the plug post 44.

[0026] Auxiliary devices 5 are provided on both sides of the main ladder 1 and the auxiliary ladder 3. The auxiliary devices 5 include a support block 51. The side wall of the support block 51 is fixedly connected to the side wall of the main ladder 1. The surface of the support block 51 is rotatably connected to a storage rod 52, and the inner wall of the storage rod 52 is threadedly connected to a threaded rod 53. When working, the storage rod 52 is rotated to allow the storage rod 52 to rotate on the surface of the support block 51. After the storage rod 52 is rotated to a suitable angle, the threaded rod 53 is rotated to allow the threaded rod 53 to rotate on the inner wall of the storage rod 52, and the threaded rod 53 is against the ground. By arranging the support block 51, the storage rod 52 and the threaded rod 53, the main ladder 1 can be auxiliary supported to a certain extent.

[0027] A dome 54 is fixedly connected to the surface of the threaded rod 53, and the inner walls of the support block 51 and the storage rod 52 are threadedly connected to the limit pin 55; when working, the limit pin 55 is rotated to the inner walls of the support block 51 and the storage rod 52, and when the threaded rod 53 moves, the dome 54 is driven to move, and the dome 54 is against the ground. By setting the limit pin 55, the angle of the storage rod 52 can be limited.

[0028] Working principle: when the main ladder 1 and the auxiliary ladder 3 are needed, the main sleeve 41 and the auxiliary sleeve 43 are respectively sleeved on the surface of the main ladder 1 and the auxiliary ladder 3, and then the main ladder 1 and the auxiliary ladder 3 are rotated to place the main ladder 1 and the auxiliary ladder 3 to a suitable angle, and then the handle 47 is pulled to make the handle 47 drive the connecting block 46 to slide, and the connecting block 46 drives the plug post 44 to slide, and the plug post 44 slides on the surface of the limit block 45. At the same time, the connecting block 46 will also drive the spring 48 to stretch, and then the rotating rod 42 is rotated to make the rotating rod 42 rotate to the surface of the auxiliary sleeve 43, and then the handle 47 is released, and the spring 48 will rebound, and the spring 48 drives the connecting block 46 and the plug post 44 to slide, and the plug post 44 is inserted into the inner wall of the socket 49 of the rotating rod 42 and the inner wall of the auxiliary sleeve 43. By setting the main sleeve 41 and the auxiliary sleeve 43, The support block 51, the storage rod 52, the threaded rod 53 and the dome 54 are arranged to assist in supporting the main ladder 1 or the auxiliary ladder 3, and the limit pin 55 is arranged to limit the angle between the main ladder 1 and the auxiliary ladder 3.

[0029] 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.

[0030] 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 portable safety engineering ladder, comprising a main ladder (1) and a limit device (4), wherein the surface of the main ladder (1) is rotatably connected to a support plate (2), and the inner wall of the support plate (2) is rotatably connected to a secondary ladder (3); characterized in that: The surfaces of the main ladder (1) and the auxiliary ladder (3) are provided with a limiting device (4), and the limiting device (4) comprises a main sleeve (41) and an auxiliary sleeve (43), and the main sleeve (41) and the auxiliary sleeve (43) are respectively sleeved on the surfaces of the main ladder (1) and the auxiliary ladder (3), and both sides of the main sleeve (41) are rotatably connected with a rotating rod (42), and the rotating rod (42) is located on the surface of the auxiliary sleeve (43), and the inner wall of the auxiliary sleeve (43) is slidably connected with a plug post (44) near the rotating rod (42), and the plug post (44) is inserted into the inner wall of the rotating rod (42) and the auxiliary sleeve (43).

2. A portable safety engineering ladder according to claim 1, characterized in that: A position of the surface of the secondary sleeve (43) close to the plug post (44) is fixedly connected to a limiting block (45), and a surface of the limiting block (45) is slidably connected to an inner wall of the plug post (44).

3. A portable safety engineering ladder according to claim 1, characterized in that: The side wall of the plug post (44) is fixedly connected to a connecting block (46), and the side wall of the connecting block (46) and the surface of the auxiliary sleeve (43) are fixedly connected to a spring (48).

4. A portable safety engineering ladder according to claim 3, characterized in that: One end of the connection block (46) away from the plug post (44) is fixedly connected to a handle (47); a plurality of plug holes (49) are provided on the surface of the rotating rod (42); and the plug post (44) is inserted into the inner wall of the plug hole (49) of the rotating rod (42).

5. The portable safety engineering ladder according to claim 1, characterized in that: Auxiliary devices (5) are provided on both sides of the main ladder (1) and the auxiliary ladder (3), and the auxiliary device (5) comprises a support block (51), the side wall of the support block (51) is fixedly connected to the side wall of the main ladder (1), the surface of the support block (51) is rotatably connected to a storage rod (52), and the inner wall of the storage rod (52) is threadedly connected to a threaded rod (53).

6. A portable safety engineering ladder according to claim 5, characterized in that: A dome (54) is fixedly connected to the surface of the threaded rod (53), and a limit pin (55) is threadedly connected to the inner walls of the support block (51) and the storage rod (52).

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