Folding telescopic ladder stand

Abstract

The utility model discloses a folding telescopic crawling ladder, which relates to the field of crawling ladders and comprises main supporting rods, side limiting holes are uniformly formed in the side edges of the main supporting rods, the inner side edges of the two main supporting rods are in butt joint with an extending ejector rod, and the inner side edges of the two main supporting rods are in butt joint with a matched ejector rod. Auxiliary connecting rods are horizontally, uniformly and fixedly arranged on the side edges between the extending ejector rods, bottom support connecting rods are horizontally, uniformly and fixedly arranged on the side edges between the main supporting rods, inner limiting grooves are formed in the side edges between the main supporting rods, and limiting inserting rods are horizontally inserted into the inner side edges of side limiting holes; end overturning grooves are horizontally and symmetrically formed in the two ends of the limiting inserting rod, blocking inner blocks are horizontally connected to the inner side edges of the end overturning grooves in a clamped mode, and movable inner grooves are horizontally formed in the top faces of the blocking inner blocks. Meanwhile, the overall limiting is more stable and efficient due to the insertion positioning structure.

Description

Technical Field

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

[0002] Ladders are ancillary facilities for manhole inspection. As ancillary facilities for urban manhole inspection, ladders have long been made of steel bars. However, traditional metal ladders are prone to rust in many harsh environmental conditions, such as manholes, tunnels, chemical companies, rainy and humid places, etc., which affects safety and has a short service life.

[0003] When the current ladder is in use, due to the single fixed rod connection structure, the overall volume is large when stored and takes up more space, and the single rod folding structure does not reduce the volume much, and the fixed rod structure does not have an extension effect, so it cannot be adjusted for use. Utility Model Content

[0004] The utility model aims to provide a foldable telescopic ladder to solve the problem raised in the above-mentioned background technology that the existing ladder is relatively large in size and occupies more space when stored due to the single fixed rod connection structure, and the single rod folding structure does not reduce the volume much, and the fixed rod structure does not have an extension effect, so it cannot be adjusted for use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A folding telescopic ladder comprises a main support rod, the side of the main support rod is evenly provided with side limit holes, the inner sides of the two main support rods are butted with extension top rods, the inner sides of the two main support rods are butted with matching top rods, auxiliary connecting rods are evenly fixedly arranged on the sides horizontally between the extension top rods, bottom supporting connecting rods are evenly fixedly arranged on the sides horizontally between the main support rods, inner limit grooves are provided on the sides between the main support rods, limit plug-in rods are horizontally inserted into the inner sides of the side limit holes, and both ends of the limit plug-in rods are horizontally symmetrically provided with An end flip groove, the inner side edge of the end flip groove is horizontally clamped with a blocking inner block, the top surface of the blocking inner block is horizontally opened with a movable inner groove, the inner side edge of the end flip groove is fixedly inserted with a positioning inner column, the side edge of the extended push rod is inserted with a connecting shaft rod, one side edge of the extended push rod and the matching push rod is fixedly provided with a side fixing block, the side edge of the side fixing block is horizontally opened with a matching side hole, the top end of the matching push rod is opened with a top flip groove, the inner side edge of the top flip groove is symmetrically opened with side sleeve holes, and the inner side edge of the side sleeve hole is fixedly clamped with a limiting inner ring.

[0007] As a preferred embodiment of the present utility model: the number of the main support rods is four, and the bottom ends of the four main support rods are provided with anti-slip sleeve structures, the four main support rods are arranged in groups of two and parallel to each other, the number of side limit holes is multiple, and the multiple side limit holes are all horizontally through-opened, and the multiple side limit holes are arranged vertically equidistantly in a straight line.

[0008] As a preferred embodiment of the present utility model: the number of the extended top rods is two, and the two extended top rods are arranged parallel to each other, and one side edge of the extended top rod is butt-jointed with the side opening end of the inner limit groove, the arrangement of the mating top rod is consistent with the arrangement of the extended top rod, and the extended top rod and the mating top rod are arranged in a herringbone shape with respect to each other.

[0009] As a preferred embodiment of the utility model: the auxiliary connecting rods are all horizontally fixed and evenly arranged at the side positions between the extended top rods and the matching top rods, the bottom support connecting rods are all horizontally fixed and arranged at the side positions between the main support rods close to the edge, the inner limit groove is opened at a side position away from the bottom support connecting rod, and one end of the multiple side limit holes extends horizontally to the inside of the inner limit groove to remain connected.

[0010] As a preferred embodiment of the utility model: both ends of the limiting plug-in rod are horizontally correspondingly inserted and arranged on the inner sides of the matching side holes and the side limiting holes, and the two ends are horizontally extended to the outer sides, and the end flip grooves are horizontally inserted and arranged at the center lines of the two ends of the limiting plug-in rod, one side of the blocking inner block is horizontally docked and arranged at the side position of the main support rod, the movable inner groove is horizontally inserted and arranged at the center position of the top surface of the blocking inner block, and the positioning inner column is vertically inserted and inserted into the inner side of the movable inner groove.

[0011] As a preferred embodiment of the present utility model: the connecting shaft rod is horizontally plugged into the side of the extending top rod near the top position, and the two ends of the connecting shaft rod are horizontally plugged into the inner side of the limiting inner ring, the side fixing block is fixedly arranged on the side of the extending top rod and the matching top rod near the bottom end, and the side fixing block is correspondingly clamped on the inner side of the inner limiting groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model is to pull the main support rod outward to form an expanded inclined arrangement, and to stretch the top extension rod and the matching extension rod upward so that the side side fixing blocks can be moved along the inner limit groove to extend upward to a specified height on the side of the main support rod, and then the limit plug-in rod is horizontally inserted and arranged in the corresponding side limit hole, and the inserted end is horizontally inserted and arranged in the matching side hole, so that the opposite side fixing block is fixedly arranged at a specified point inside the inner limit groove, and the blocking inner blocks at both ends are flipped horizontally in the end flipping groove, so that the blocking inner blocks can be set in a blocking manner at the side position of the main support rod, effectively blocking the detachment of the limit plug-in rod, and then the personnel can step on the bottom supporting connecting rod and the auxiliary connecting rod to form a climbing effect, and the foldable and retractable structure is adopted, so that the overall storage is small and convenient for storage and use, and at the same time, the plug-in positioning structure makes the overall limit more stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a foldable and telescopic ladder;

[0016] Figure 2 It is a structural schematic diagram of the top view cross-section connection details of the main support rod of a folding and telescopic ladder;

[0017] Figure 3 It is a structural schematic diagram of the front view cross-section connection details of the main support rod of a folding and telescopic ladder;

[0018] Figure 4 It is a structural schematic diagram of the front view connection details of the extension top rod of a folding and telescopic ladder;

[0019] Figure 5 The present invention is a structural schematic diagram showing the top view and cross-sectional connection details of a folding and telescopic ladder.

[0020] In the figure: 1. Main support rod; 2. Side limit hole; 3. Extended top rod; 4. Matching top rod; 5. Auxiliary connecting rod; 6. Bottom supporting connecting rod; 7. Inner limit groove; 8. Limit plug-in rod; 9. End flip groove; 10. Blocking inner block; 11. Movable inner groove; 12. Positioning inner column; 13. Connecting shaft rod; 14. Side fixing block; 15. Matching side hole; 16. Top flip groove; 17. Side sleeve hole; 18. Limit inner ring. DETAILED DESCRIPTION

[0021] See also Figure 1In an embodiment of the utility model, a foldable telescopic ladder comprises a main support rod 1, side limit holes 2 are evenly opened on the side of the main support rod 1, the number of the main support rods 1 is four, and the bottom ends of the four main support rods 1 are provided with an anti-slip sleeve structure, the four main support rods 1 are arranged in parallel with each other in groups of two, the number of the side limit holes 2 is multiple, and the multiple side limit holes 2 are all opened horizontally through, and the multiple side limit holes 2 are arranged in a straight line vertically equidistantly, the inner sides of the two main support rods 1 are butt-jointed with an extension top rod 3, the inner sides of the two main support rods 1 are butt-jointed with a matching top rod 4, the number of the extension top rod 3 is two, and the two extension top rods The rods 3 are arranged parallel to each other, and one side of the extended top rod 3 is butt-jointed to the side opening end of the inner limit groove 7, the arrangement of the matching top rod 4 is consistent with that of the extended top rod 3, and the extended top rod 3 and the matching top rod 4 are arranged in a herringbone shape with each other, auxiliary connecting rods 5 are evenly fixedly arranged horizontally on the sides between the extended top rods 3, and bottom supporting connecting rods 6 are evenly fixedly arranged horizontally on the sides between the main support rods 1, the auxiliary connecting rods 5 are evenly fixedly arranged horizontally on the sides between the extended top rods 3 and the matching top rods 4, and the bottom supporting connecting rods 6 are evenly fixedly arranged horizontally on the sides between the main support rods 1;

[0022] See also Figure 2-5In the embodiment of the utility model, a foldable telescopic ladder is provided, wherein an inner limit groove 7 is provided on the side between the main support rods 1, and the inner limit groove 7 is provided at a side position away from the bottom support connecting rod 6, and one end of a plurality of side limit holes 2 extends horizontally to the inside of the inner limit groove 7 to maintain a continuous connection, and the inner side of the side limit hole 2 is horizontally plugged with a limit plug-in rod 8, and the two ends of the limit plug-in rod 8 are horizontally symmetrically provided with end flip grooves 9, and the inner side of the end flip groove 9 is horizontally clamped with a blocking inner block 10, and the top surface of the blocking inner block 10 is horizontally provided with a movable inner groove 11, and the inner side of the end flip groove 9 is fixedly plugged with a positioning inner column 12, and the two ends of the limit plug-in rod 8 are horizontally correspondingly inserted in the inner side of the matching side hole 15 and the side limit hole 2, and the two ends are horizontally extended to the outer side arrangement, and the end flip groove 9 is horizontally penetrated and provided at the midline position of the two ends of the limit plug-in rod 8, and one side of the blocking inner block 10 is horizontally docked and provided on the main support rod. 1, the movable inner groove 11 is horizontally penetrated and opened at the center position of the top surface of the blocking inner block 10, the positioning inner column 12 is vertically penetrated and inserted in the inner side of the movable inner groove 11, the side of the extended push rod 3 is inserted with a connecting shaft rod 13, and one side of the extended push rod 3 and the matching push rod 4 is fixedly provided with a side fixing block 14, and the side of the side fixing block 14 is horizontally provided with a matching side hole 15, and the top of the matching push rod 4 is provided with a top turning groove 16, and the inner side of the top turning groove 16 is symmetrically provided with side sleeve holes 17, and the inner side of the side sleeve hole 17 is fixedly clamped with a limiting inner ring 18, the connecting shaft rod 13 is horizontally inserted and set at the side of the extended push rod 3 near the top position, and the two ends of the connecting shaft rod 13 are horizontally inserted and set at the inner side of the limiting inner ring 18, the side fixing block 14 is fixedly set at the side of the extended push rod 3 and the matching push rod 4 near the bottom position, and the side fixing block 14 is correspondingly clamped and set at the inner side of the inner limiting groove 7.

[0023] The working principle of the utility model is:

[0024] The main support rod 1 is pulled outward to form an expanded inclined arrangement, and the side fixing blocks 14 are moved along the inner limit groove 7 by stretching the top extension rod 3 and the matching extension rod 4 upward, so that the extension rod 3 and the matching extension rod 4 are extended upward to the specified height on the side of the main support rod 1, and then the limiting plug-in rod 8 is horizontally inserted and set in the corresponding side limit hole 2, and the inserted end is horizontally inserted and set in the matching side hole 15, so that the opposite side fixing block 14 is fixed at the specified point inside the inner limit groove 7, and the blocking inner blocks 10 at both ends are flipped horizontally in the end flip groove 9, so that the blocking inner block 10 can be set in a blocking manner at the side position of the main support rod 1, effectively blocking the detachment of the limiting plug-in rod 8, and then the personnel can step on the bottom support connecting rod 6 and the auxiliary connecting rod 5 to form a climbing effect.

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foldable telescopic ladder, comprising a main support rod (1), characterized in that: The side edges of the main support rods (1) are evenly provided with side limit holes (2), the inner sides of the two main support rods (1) are butt-jointed with extension top rods (3), the inner sides of the two main support rods (1) are butt-jointed with matching top rods (4), auxiliary connecting rods (5) are evenly and horizontally fixedly arranged on the sides between the extension top rods (3), bottom supporting connecting rods (6) are evenly and horizontally fixedly arranged on the sides between the main support rods (1), inner limit grooves (7) are provided on the sides between the main support rods (1), the inner sides of the side limit holes (2) are horizontally plugged with limit plug-in rods (8), the two ends of the limit plug-in rods (8) are horizontally and symmetrically provided with end flip grooves (9), the inner sides of the end flip grooves (9) are horizontally and symmetrically connected with each other. A blocking inner block (10) is flatly connected, a movable inner groove (11) is horizontally opened on the top surface of the blocking inner block (10), a positioning inner column (12) is fixedly inserted on the inner side of the end flip groove (9), a connecting shaft (13) is inserted on the side of the extending push rod (3), a side fixing block (14) is fixedly provided on one side of the extending push rod (3) and the matching push rod (4), a matching side hole (15) is horizontally opened on the side of the side fixing block (14), a top flip groove (16) is opened on the top end of the matching push rod (4), a side sleeve hole (17) is symmetrically opened on the inner side of the top flip groove (16), and a limiting inner ring (18) is fixedly connected on the inner side of the side sleeve hole (17).

2. A foldable telescopic ladder according to claim 1, characterized in that: The number of the main support rods (1) is four, and the bottom ends of the four main support rods (1) are provided with anti-slip sleeve structures. The four main support rods (1) are arranged in pairs and parallel to each other. The number of the side limit holes (2) is multiple, and the multiple side limit holes (2) are all opened horizontally through, and the multiple side limit holes (2) are arranged vertically equidistantly in a straight line.

3. A foldable telescopic ladder according to claim 1, characterized in that: The number of the extending push rods (3) is two, and the two extending push rods (3) are arranged in parallel with each other, and one side edge of the extending push rod (3) is butt-jointed with the side opening end of the inner limit groove (7), the arrangement mode of the matching push rod (4) is arranged in a consistent manner with the arrangement mode of the extending push rod (3), and the extending push rod (3) and the matching push rod (4) are arranged in a herringbone shape with respect to each other.

4. The foldable telescopic ladder according to claim 1, characterized in that: The auxiliary connecting rods (5) are all horizontally fixedly arranged between the extended top rods (3) and the matching top rods (4) and are evenly arranged on the side positions; the bottom supporting connecting rods (6) are all horizontally fixedly arranged between the main supporting rods (1) and close to the edge positions on the side; the inner limit groove (7) is arranged at a side position away from the bottom supporting connecting rod (6); and one end of the plurality of side limit holes (2) is horizontally extended to the inside of the inner limit groove (7) to maintain a continuous connection.

5. The foldable telescopic ladder according to claim 1, characterized in that: Both ends of the limit plug-in rod (8) are horizontally correspondingly inserted and arranged on the inner side of the matching side hole (15) and the side limit hole (2), and the two ends are horizontally extended to the outer side. The end flip groove (9) is horizontally opened at the center line of the two ends of the limit plug-in rod (8). One side of the blocking inner block (10) is horizontally connected to the side position of the main support rod (1). The movable inner groove (11) is horizontally opened at the center of the top surface of the blocking inner block (10). The positioning inner column (12) is vertically inserted and arranged on the inner side of the movable inner groove (11).

6. The foldable telescopic ladder according to claim 1, characterized in that: The connecting shaft rod (13) is horizontally inserted and arranged on the side of the extending top rod (3) near the top end, and the two ends of the connecting shaft rod (13) are horizontally inserted and arranged on the inner side of the limiting inner ring (18), the side fixing block (14) is fixedly arranged on the side of the extending top rod (3) and the matching top rod (4) near the bottom end, and the side fixing block (14) is correspondingly clamped and arranged on the inner side of the inner limiting groove (7).

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