Convenient-to-move herringbone ladder for installation engineering

Abstract

The utility model relates to the field of herringbone ladders, and discloses a herringbone ladder convenient to move for installation engineering, which comprises two groups of crawling ladders, the side surfaces of the outer walls of the two groups of crawling ladders are hinged through a connecting rod I and a connecting rod II, and the bottom ends of the outer walls of the crawling ladders are hinged with hinge blocks through limiting components. Extension ladders are hinged to the bottoms of the outer walls of the hinge blocks through limiting assemblies, bottom feet are hinged to the bottoms of the outer walls of the extension ladders, and rotating rods are rotationally connected to the bottom ends of the inner sides of the outer walls of the extension ladders. According to the movable herringbone ladder, by arranging the extension ladder, the bottom feet, the rotating rods, the universal wheels and the fixing assemblies, when the herringbone ladder needs to be moved, limiting is relieved by manually pulling the fixing blocks, then the fixing blocks 19 are rotated to drive the square rods to rotate, the universal wheels are driven by the square rods to make contact with the ground, then the limiting blocks are loosened, and the limiting blocks are rebounded into the corresponding first fixing grooves through the limiting springs; the moving wheels can be quickly switched, and the herringbone ladder can be manually moved to replace the construction position.

Description

Technical Field

[0001] The utility model relates to the field of herringbone ladders, in particular to a herringbone ladder for installation engineering which is easy to move. Background Art

[0002] Installation projects usually include electrical, ventilation, water supply and drainage, and equipment installation work. Industrial equipment and pipelines, cables, lighting lines, etc. are often also covered within the scope of installation projects. The most indispensable tool for installation projects is the herringbone ladder. The herringbone ladder is a type of climbing tool used for work such as decoration in spaces above a plane. When it is used, the front and rear ladder bars and the ground form an isosceles triangle, which looks like a herringbone, so it is figuratively called a "herringbone ladder."

[0003] Existing herringbone ladders for installation projects usually adopt fixed-base type, and the ladder is moved by manual handling to change the construction position. Some herringbone ladders for installation projects usually adopt a full-body structure, and two sets of ladder frames are manually combined for handling.

[0004] On the one hand, the existing fixed-foot herringbone ladder needs to be manually folded and stored when moving to a new construction location, and then manually unfolded for use. It is impossible to quickly switch the moving wheels for movement. On the other hand, the existing herringbone ladder with a full-body structure usually requires two people to carry it at the same time during transportation or manual transportation due to its long and large size. It cannot be folded and stored again, and the transportation occupies a large space. Therefore, a herringbone ladder for installation engineering that is easy to move is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a herringbone ladder for installation engineering that is easy to move, aiming to improve the problem in the prior art that the moving wheels cannot be quickly switched for movement.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a herringbone ladder for installation engineering that is easy to move, including a climbing ladder, wherein the climbing ladder is provided with two groups, and the side surfaces of the outer walls of the two groups of ladders are hinged by connecting rod one and connecting rod two, the bottom end of the outer wall of the ladder is hinged with a hinge block through a limiting assembly, the bottom of the outer wall of the hinge block is hinged with an extension ladder through a limiting assembly, the bottom of the outer wall of the extension ladder is hinged with a base, the bottom end of the inner side of the outer wall of the extension ladder is rotatably connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to a universal wheel, and the bottom end of the outer wall of the extension ladder is provided with a fixing assembly.

[0007] As a further description of the above technical solution:

[0008] The limit assembly includes a limit frame, the end of the outer wall of the limit frame is fixedly connected to the bottom end of the inner side of the outer wall of the ladder, the inner wall of the limit frame is elastically connected to the rotating shaft through a limit spring, the outer wall of the rotating shaft is fixedly connected to a clamping block, the end of the outer wall of the rotating shaft is fixedly connected to a connecting rod, and the inner wall of the hinge block is provided with a clamping groove.

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes a fixing frame, the outer wall end of the fixing frame is fixedly connected to the bottom end of the outer wall of the extension ladder, the outer wall of the fixing frame is provided with a fixing groove 1, the inner wall of the fixing frame is elastically connected to a square rod through a compression spring, the right end of the outer wall of the square rod is fixedly connected to a fixing block, and the inner wall of the inner bottom end of the extension ladder is provided with a fixing groove 2.

[0011] As a further description of the above technical solution:

[0012] The top end of the outer wall of connecting rod one is hinged to the end of the outer wall of a group of ladders on the right side, the bottom end of the outer wall of connecting rod one is hinged to the bottom end of the outer wall of connecting rod two, and the top end of the outer wall of connecting rod two is hinged to the end of the outer wall of a group of ladders on the left side. The top ends of the outer walls of the two groups of ladders are hinged.

[0013] As a further description of the above technical solution:

[0014] One end of the limit spring is fixedly connected to the top of the inner wall of the limit frame, and the other end of the limit spring is fixedly connected to the outer wall end of the rotating shaft. The outer wall end of the rotating shaft is slidably connected to the inner wall of the limit frame. The outer wall of the rotating shaft passes through and is slidably connected to the inner wall of the hinge block. The outer wall of the rotating shaft passes through and is slidably connected to the inner wall of the bottom end of the ladder.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the clamping block is slidably connected to the inner wall of the bottom end of the ladder, and the end of the outer wall of the clamping block is clamped on the inner wall of the clamping slot.

[0017] As a further description of the above technical solution:

[0018] One end of the compression spring is in contact with the top end of the inner wall of the fixed frame, and the other end of the compression spring is fixedly connected to the outer wall of the square rod.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the fixing block is clamped on the inner wall of the fixing groove 1, the outer wall of the square rod passes through and is slidably connected to the inner wall of the rotating rod, the end of the outer wall of the square rod is clamped on the inner wall of the fixing groove 2, and the outer wall of the square rod passes through and is slidably connected to the inner wall of the fixing frame.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by setting an extension ladder, a base, a rotating rod, a universal wheel, and a fixing assembly, when the stepladder needs to be moved, the limit is released by manually pulling the fixing block, and then the fixing block 19 is rotated to drive the square rod to rotate, and the universal wheel is driven to contact the ground through the square rod. After that, the limit block is released and the limit spring is used to rebound it to the corresponding fixed groove 1, thereby realizing rapid switching of the moving wheel, which is convenient for manually moving the stepladder to change the construction position.

[0023] 2. In the present invention, by providing a hinge block, an extension ladder, a climbing ladder, and a limit assembly, when the stepladder is to be stored, the connecting rod is manually pulled to drive the two sets of rotating shafts to contact the limit at the same time, and then the outer wall of the extension ladder is manually rotated to fit the outer wall of the climbing ladder, and then the connecting rod is released to allow the limit spring to rebound the block to the card slot 14 and fix it, so that the extension ladder can be folded, the space occupied by the stepladder can be reduced, and it is convenient for manual handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of a movable stepladder for installation engineering proposed by the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the folded extension ladder of the mobile installation engineering ladder proposed by the utility model;

[0026] Figure 3 The utility model provides a herringbone ladder for installation engineering that is easy to move Figure 2 The enlarged three-dimensional schematic diagram of part A in the middle;

[0027] Figure 4 This is a schematic sectional perspective view of an extended ladder of a herringbone ladder for installation engineering that is easy to move, as proposed by the present invention;

[0028] Figure 5 The utility model provides a herringbone ladder for installation engineering that is easy to move Figure 3 The enlarged three-dimensional schematic diagram of part B in the middle;

[0029] Figure 6 The utility model is a three-dimensional schematic diagram of the fixing groove 2 of the herringbone ladder for installation engineering that is easy to move.

[0030] Legend:

[0031] 1. Ladder; 2. Connecting rod 1; 3. Connecting rod 2; 4. Hinge block; 5. Extension ladder; 6. Foot; 7. Turn bar; 8. Universal wheel; 9. Limit frame; 10. Limit spring; 11. Rotating shaft; 12. Block; 13. Connecting rod; 14. Slot; 15. Fixing frame; 16. Fixing slot 1; 17. Compression spring; 18. Square rod; 19. Fixing block; 20. Fixing slot 2. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment of a herringbone ladder for installation engineering that is easy to move, including a ladder 1, the ladder 1 is a herringbone ladder main body for construction workers to climb, the ladder 1 is provided with two groups, the outer wall sides of the two groups of ladders 1 are hinged by connecting rod 1 2 and connecting rod 2 3, the connecting rod 1 2 and connecting rod 2 3 are hinged, and are used to limit the expansion angle of the ladder 1, the bottom end of the outer wall of the ladder 1 is hinged with a hinge block 4 through a limit assembly, the hinge block 4 is provided for bidirectional hinged climbing ladder 1 and extension ladder 5, the ladder 1 and extension ladder 5 are folded and stored by the limit assembly, the bottom of the outer wall of the hinge block 4 is hinged with an extension ladder 5 through the limit assembly, the extension ladder 5 is a herringbone ladder auxiliary body, and is used to change its expansion or fit to the outer wall of the ladder 1 through the limit assembly, and the bottom of the outer wall of the extension ladder 5 is hinged The bottom of the foot 6 is provided with a groove for increasing the friction with the ground and increasing the stability of the stepladder. The bottom end of the inner side of the outer wall of the extended ladder 5 is rotatably connected to a rotating rod 7. The rotating rod 7 is used to change the angle of the universal wheel 8 through a fixed assembly. The outer wall of the rotating rod 7 is fixedly connected to the universal wheel 8. The universal wheel 8 is a prior art and will not be described in detail. It is used to switch the universal wheel 8 to contact the ground through the fixed assembly, which is convenient for manually moving the stepladder to change the construction position. The bottom end of the outer wall of the extended ladder 5 is provided with a fixed assembly. The top end of the outer wall of the connecting rod 1 is hinged to the outer wall end of the right group of ladders 1, the bottom end of the outer wall of the connecting rod 1 is hinged to the outer wall bottom end of the connecting rod 2 3, and the top end of the outer wall of the connecting rod 2 3 is hinged to the outer wall end of the left group of ladders 1, and the top ends of the outer walls of the two groups of ladders 1 are hinged.

[0034] Reference Figure 1-Figure 3The limit assembly includes a limit frame 9, which is used to extend the card connection space for the rotating shaft 11 to ensure that the limit spring 10 has enough compression space. The end of the outer wall of the limit frame 9 is fixedly connected to the bottom end of the inner side of the outer wall of the ladder 1. The inner wall of the limit frame 9 is elastically connected to the rotating shaft 11 through the limit spring 10. The rotating shaft 11 is used to act as a hinge axis. At the same time, the outer wall fixed card block 12 plays a limiting role. The outer wall of the rotating shaft 11 is fixedly connected with a card block 12. The card block 12 is provided in two opposite groups for engaging the card slot 14 to fix the ladder 1 and the extension ladder 5. The outer wall end of the rotating shaft 11 is fixedly connected with a connecting rod 13. The connecting rod 13 is used to release the two sets of limits at the same time, which is convenient for single person to fold and store. The inner wall of the hinge block 4 is provided with a card slot 14. The card slot 14 is provided with Two groups are used to clamp the card block 12 to fix two groups of positions in the expanded or folded state. One end of the limit spring 10 is fixedly connected to the top of the inner wall of the limit frame 9, and the other end of the limit spring 10 is fixedly connected to the outer wall end of the rotating shaft 11. Through the opposite extrusion force between the limit spring 10 and the limit frame 9, the card block 12 always remains clamped on the inner wall of the card slot 14 without being affected by external force. The outer wall end of the rotating shaft 11 is slidably connected to the inner wall of the limit frame 9, the outer wall of the rotating shaft 11 passes through and is slidably connected to the inner wall of the hinge block 4, the outer wall of the rotating shaft 11 passes through and is slidably connected to the inner wall of the bottom end of the ladder 1, the outer wall of the card block 12 is slidably connected to the inner wall of the bottom end of the ladder 1, and the outer wall end of the card block 12 is clamped on the inner wall of the card slot 14.

[0035] Reference Figure 4-Figure 6, the fixing assembly includes a fixing frame 15, the fixing frame 15 is configured to provide a compression space for the compression spring 17, and to provide a clamping position for the fixing block 19. The outer wall end of the fixing frame 15 is fixedly connected to the bottom end of the outer wall of the extension ladder 5. The outer wall of the fixing frame 15 is provided with a fixing groove 16. The fixing groove 16 is provided with a square multi-angle slot for clamping the fixing block 19 to fix the angle of the rotating rod 7. The inner wall of the fixing frame 15 is elastically connected with a square rod 18 through a compression spring 17. The square rod 18 is configured as a square strip and is configured to slide through the inner wall of the rotating rod 7 while driving the square rod 18 to rotate. The right end of the outer wall of the square rod 18 is fixedly connected with a fixing block 19. The fixing block 19 is configured as a cube and is used for multi-position clamping of the fixing groove 16 to fix the rotation angle of the universal wheel 8. The inner wall of the inner bottom end of the extension ladder 5 is provided with a fixing groove 20. The fixing groove 20 is used to clamp the square rod 1 8. The same angle slot is set as the fixing slot 16 to improve the stability of the rotation angle and avoid the sliding of the right-side rotating rod 7 due to gravity, which causes the ladder to tip over. One end of the compression spring 17 contacts the top of the inner wall of the fixing frame 15, and the other end of the compression spring 17 is fixedly connected to the outer wall ring eaves of the square rod 18. Through the opposing extrusion force between the compression spring 17 and the fixing frame 15, the fixing block 19 is always kept connected to the inner wall of the fixing slot 16 without being affected by external forces, so that the square rod 18 is always kept connected to the inner wall of the fixing slot 2 20 without being affected by external forces. The outer wall of the fixing block 19 is clamped on the inner wall of the fixing slot 16, the outer wall of the square rod 18 passes through and is slidably connected to the inner wall of the rotating rod 7, the end of the outer wall of the square rod 18 is clamped on the inner wall of the fixing slot 2 20, and the outer wall of the square rod 18 passes through and is slidably connected to the inner wall of the fixing frame 15.

[0036] Working principle: When it is necessary to move the herringbone ladder, manually pull the fixed block 19 out of the fixing slot 16 to release the limit, and at the same time drive the square rod 18 out of the fixing slot 2 20 to release the limit, then rotate the fixed block 19 to drive the square rod 18 to rotate, and drive the rotating rod 7 to rotate through the square rod 18, and then drive the universal wheel 8 to contact the ground through the rotating rod 7, then release the fixed block 19 and at the same time use the compression spring 17 to rebound the fixed block 19 to the corresponding fixing slot 1 16 to engage, and at the same time rebound the square rod 18 to the corresponding fixing slot 2 20 to engage, so as to realize the rapid switching of the moving wheels, which is convenient for manual and rapid movement of the herringbone ladder to the construction position and improves construction efficiency.

[0037] When the stepladder is to be folded, the connecting rod 13 is manually pulled to move the two sets of rotating shafts 11 backward, and the rotating shafts 11 drive the clamping block 12 out of the clamping slot 14 to release the limit. Then, the extension ladder 5 is manually rotated so that its outer wall is in contact with the outer wall of the climbing ladder 1. Then, the connecting rod 13 is released and the clamping block 12 is rebounded into the corresponding clamping slot 14 by the limit spring 10, so that the extension ladder 5 is folded. This reduces the space occupied by the stepladder, making it easier to carry manually. The stepladder can also be moved by deploying the universal wheels 8 by fixing the assembly, reducing transportation costs.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A herringbone ladder for installation engineering that is easy to move, including a climbing ladder (1), characterized in that: The ladder (1) is provided with two groups. The outer wall side surfaces of the two groups of ladders (1) are hinged through a connecting rod 1 (2) and a connecting rod 2 (3). The bottom end of the outer wall of the ladder (1) is hinged to a hinge block (4) through a limiting assembly. The bottom of the outer wall of the hinge block (4) is hinged to an extension ladder (5) through a limiting assembly. The bottom of the outer wall of the extension ladder (5) is hinged to a foot (6). The bottom end of the inner side of the outer wall of the extension ladder (5) is rotatably connected to a rotating rod (7). The outer wall of the rotating rod (7) is fixedly connected to a universal wheel (8). The bottom end of the outer wall of the extension ladder (5) is provided with a fixing assembly.

2. The movable stepladder for installation engineering according to claim 1 is characterized in that: The limit assembly comprises a limit frame (9), the end of the outer wall of the limit frame (9) is fixedly connected to the bottom end of the inner side of the outer wall of the ladder (1), the inner wall of the limit frame (9) is elastically connected to a rotating shaft (11) through a limit spring (10), the outer wall of the rotating shaft (11) is fixedly connected to a clamping block (12), the end of the outer wall of the rotating shaft (11) is fixedly connected to a connecting rod (13), and the inner wall of the hinge block (4) is provided with a clamping groove (14).

3. The movable stepladder for installation engineering according to claim 1 is characterized in that: The fixing assembly comprises a fixing frame (15), the outer wall end of the fixing frame (15) is fixedly connected to the outer wall bottom end of the extension ladder (5), the outer wall of the fixing frame (15) is provided with a fixing groove (16), the inner wall of the fixing frame (15) is elastically connected to a square rod (18) through a compression spring (17), the right end of the outer wall of the square rod (18) is fixedly connected to a fixing block (19), and the inner wall of the inner bottom end of the extension ladder (5) is provided with a fixing groove (20).

4. The movable stepladder for installation engineering according to claim 1 is characterized in that: The top end of the outer wall of the connecting rod 1 (2) is hinged to the end of the outer wall of the right group of ladders (1), the bottom end of the outer wall of the connecting rod 1 (2) is hinged to the bottom end of the outer wall of the connecting rod 2 (3), and the top end of the outer wall of the connecting rod 2 (3) is hinged to the end of the outer wall of the left group of ladders (1), and the top ends of the outer walls of the two groups of ladders (1) are hinged.

5. The movable stepladder for installation engineering according to claim 2 is characterized in that: One end of the limit spring (10) is fixedly connected to the top of the inner wall of the limit frame (9), and the other end of the limit spring (10) is fixedly connected to the outer wall end of the rotating shaft (11). The outer wall end of the rotating shaft (11) is slidably connected to the inner wall of the limit frame (9). The outer wall of the rotating shaft (11) passes through and is slidably connected to the inner wall of the hinge block (4). The outer wall of the rotating shaft (11) passes through and is slidably connected to the inner wall of the bottom end of the ladder (1).

6. The movable stepladder for installation engineering according to claim 2, characterized in that: The outer wall of the clamping block (12) is slidably connected to the inner wall of the bottom end of the ladder (1), and the end of the outer wall of the clamping block (12) is clamped to the inner wall of the clamping slot (14).

7. The movable stepladder for installation engineering according to claim 3 is characterized in that: One end of the compression spring (17) contacts the top of the inner wall of the fixed frame (15), and the other end of the compression spring (17) is fixedly connected to the outer wall of the square rod (18).

8. The movable stepladder for installation engineering according to claim 3 is characterized in that: The outer wall of the fixing block (19) is clamped on the inner wall of the fixing groove (16), the outer wall of the square rod (18) passes through and is slidably connected to the inner wall of the rotating rod (7), the end of the outer wall of the square rod (18) is clamped on the inner wall of the fixing groove (20), and the outer wall of the square rod (18) passes through and is slidably connected to the inner wall of the fixing frame (15).

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