A telescoping ladder

Abstract

The utility model provides a telescopic ladder, including main ladder, the right side of main ladder is provided with telescopic ladder, the both sides of telescopic ladder front and back close to the bottom fixed mounting has lifting piece, the both sides of main ladder front and back fixed mounting has lifting plate, the right side of main ladder and located telescopic ladder bottom fixed mounting has connecting portion, the inside of connecting portion is provided with adjusting assembly, the both sides of connecting portion front and back are provided with support assembly, through adjusting assembly drive telescopic ladder relative main ladder flexible telescopic, break fixed length limit, staff need not frequently remove ladder and can disposablely cover greater operation area, reduce the operation tediousness because of adjusting position, support assembly passes through sliding column and adjusts height and utilizes limit stop bolt fixed, cooperate and support base increase contact area, can adapt to different downhole ground condition, prevent ladder to sway, make staff more safe when work in extension area.

Description

Technical Field

[0001] This utility model relates to the field of underground construction equipment technology, and in particular to a retractable ladder. Background Technology

[0002] Underground construction operations refer to the general term for construction, mining, maintenance, and exploration operations carried out in underground environments (such as mines, tunnels, underground pipelines, underground engineering, etc.). In underground construction operations, human ladders are important auxiliary tools. In areas where there is no mechanical lifting equipment or equipment cannot reach, human ladders provide workers with a safe way to go up and down, avoiding the risk of falling from rock walls, equipment, etc. Some existing ladders have a fixed length, which cannot be flexibly increased according to the needs of underground operations. This makes it difficult for workers to cover a larger work area at once, requiring frequent movement or the use of other auxiliary tools to adjust the work position. This not only increases the complexity of operation and reduces the convenience of work, but also affects the improvement of work efficiency to a certain extent.

[0003] Therefore, this utility model proposes a retractable human ladder to solve the problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a retractable ladder to solve the problem that existing technologies cannot flexibly increase the length of the ladder according to the needs of underground operations, making it difficult for workers to cover a larger work area at once. This requires frequent movement or the use of other auxiliary tools to adjust the work position, which not only increases the cumbersomeness of operation and reduces the convenience of work, but also affects the improvement of work efficiency to a certain extent.

[0005] To achieve the purpose of this utility model, the present utility model is implemented through the following technical solution: a retractable ladder, including a main ladder, a telescopic ladder provided on the right side of the main ladder, multiple ladder rods fixedly installed on the inner side of the main ladder and the telescopic ladder, lifting blocks fixedly installed on the front and rear sides of the telescopic ladder near the bottom, lifting plates fixedly installed on the front and rear sides of the main ladder, the lifting plate having a lifting groove on the side away from the main ladder for the lifting blocks to slide up and down, hanging rings fixedly installed on the top of the main ladder and the telescopic ladder near the front and rear sides, a connecting part fixedly installed on the right side of the main ladder and at the bottom of the telescopic ladder, an adjustment component provided on the inner side of the connecting part for adjusting the height of the telescopic ladder, and support components provided on the front and rear sides of the connecting part for supporting the stability of the main ladder.

[0006] A further improvement is that the distance between any two adjacent ladder bars is 300 mm, and anti-slip grooves are provided on the surface of the ladder bars.

[0007] A further improvement is that the adjusting component includes a lead screw, the top and bottom ends of which are rotatably connected to the inner wall of the connecting part. A connecting plate is fitted onto the surface of the lead screw and threadedly connected thereto. Multiple connecting rods are fixedly installed on the top of the connecting plate near the front and rear sides. The top ends of the connecting rods penetrate the inner side of the connecting part and are fixedly connected to the bottom of the telescopic ladder. An adjusting block for driving the lead screw to rotate is rotatably connected to the bottom of the connecting part.

[0008] A further improvement is that: a first hinge rod is rotatably connected to the bottom inner side of the connecting part and to the front and rear sides of the lead screw; a second hinge rod is rotatably connected to the top of the first hinge rod; the top of the second hinge rod is rotatably connected to the bottom of the connecting plate; and a protective pad is fixedly installed on the top inner side of the connecting part and to the front and rear sides of the lead screw.

[0009] A further improvement is that the support assembly includes a mounting base, the surface of the mounting base is fixedly connected to the connecting part, a fixing sleeve is fixedly installed on the inner side wall of the mounting base, a sliding column is slidably connected to the inner side of the fixing sleeve, a support base is fixedly installed at the bottom end of the sliding column, a limit seat is fixedly installed near the top end of the surface of the fixing sleeve, and a limit bolt is rotatably connected to the front side of the limit seat.

[0010] A further improvement is that: the sliding column has multiple limiting holes adapted to the limiting bolt on the side away from the telescopic ladder, and the fixed sleeve and the inner side of the limiting seat have a connecting hole through which the limiting bolt can pass.

[0011] The beneficial effects of this utility model are as follows: 1. By adjusting the components to drive the telescopic ladder to extend and retract flexibly relative to the main ladder, the fixed length limitation is broken. Workers can cover a larger work area at once without frequently moving the ladder, reducing the cumbersome operation caused by adjusting the position and significantly improving work convenience and efficiency.

[0012] 2. The sliding fit between the lifting block and the lifting plate, and the auxiliary support of the first hinge rod and the second hinge rod, improve the structural stability of the telescopic ladder during the lifting process.

[0013] 3. The support assembly is height-adjustable via sliding columns and fixed with limit bolts. Combined with the support base, it increases the contact area, adapting to different underground ground conditions, preventing the ladder from swaying, reducing operational interruptions caused by instability, making it safer for workers to operate in expanded areas, and indirectly improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a side view of the telescopic ladder and its connecting part of this utility model.

[0016] Figure 3 This is a side sectional view of the connecting part and adjusting component of this utility model.

[0017] Figure 4 This is a side sectional view of the support component of this utility model.

[0018] The components are: 1. Main ladder; 2. Telescopic ladder; 3. Ladder rod; 4. Lifting block; 5. Lifting plate; 6. Lifting ring; 7. Connecting part; 8. Screw rod; 9. Connecting plate; 10. Connecting rod; 11. Adjusting block; 12. First hinge rod; 13. Second hinge rod; 14. Protective pad; 15. Mounting seat; 16. Fixing sleeve; 17. Sliding column; 18. Support base; 19. Limiting seat; 20. Limiting bolt; 21. Limiting hole. Detailed Implementation

[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0020] according to Figure 1-4 As shown in the figure, this embodiment proposes a solution: a retractable ladder, including a main ladder 1, a retractable ladder 2 on the right side of the main ladder 1, multiple ladder rods 3 fixedly installed on the inner side of the main ladder 1 and the retractable ladder 2, lifting blocks 4 fixedly installed on the front and rear sides of the retractable ladder 2 near the bottom, lifting plates 5 fixedly installed on the front and rear sides of the main ladder 1, the lifting plate 5 has a lifting groove on the side away from the main ladder 1 for the lifting blocks 4 to slide up and down, hanging rings 6 fixedly installed on the top of the main ladder 1 and the retractable ladder 2 near the front and rear sides, a connecting part 7 fixedly installed on the right side of the main ladder 1 and at the bottom of the retractable ladder 2, an adjustment component is provided on the inner side of the connecting part 7 for adjusting the height of the retractable ladder 2, and support components are provided on the front and rear sides of the connecting part 7 for supporting the stability of the main ladder 1.

[0021] In this implementation case, the support components allow the adjustable range to adapt to different underground ground conditions. Stable support makes it safer for workers to expand the work area, reducing operational interruptions caused by instability and indirectly improving work efficiency. The position of the telescopic ladder 2 relative to the main ladder 1 can be changed by adjusting the components, allowing the overall length to change flexibly. The telescopic design breaks the fixed length limitation, eliminating the need for workers to frequently move the ladder and enabling them to cover a larger work area at once. This reduces operational complexity and improves convenience and work efficiency. The sliding connection between the lifting block 4 and the lifting plate 5 increases the stability of the telescopic ladder 2 during the lifting process, making it more stable for workers to work in a larger area and further improving work efficiency.

[0022] The spacing between two adjacent ladder bars 3 is 300mm. Anti-slip grooves are provided on the surface of the ladder bars 3. The 300mm spacing of the ladder bars 3 is ergonomic and makes it easy for workers to step on them. The anti-slip grooves increase the friction.

[0023] The adjustment assembly includes a lead screw 8, the top and bottom of which are rotatably connected to the inner wall of the connecting part 7. A connecting plate 9 is fitted onto the surface of the lead screw 8 and threadedly connected thereto. Multiple connecting rods 10 are fixedly installed on the top of the connecting plate 9 near the front and rear sides. The top of the connecting rods 10 passes through the inner side of the connecting part 7 and is fixedly connected to the bottom of the telescopic ladder 2. An adjustment block 11 that drives the lead screw 8 to rotate is rotatably connected to the bottom of the connecting part 7. Rotating the adjustment block 11 at the bottom of the connecting part 7 drives the lead screw 8 to rotate, thereby driving the connecting plate 9 and the connecting rods 10 to move up and down, thereby realizing the height adjustment of the telescopic ladder 2. This allows workers to accurately adjust the length of the telescopic ladder 2 to meet different underground operation length requirements.

[0024] A first hinge rod 12 is rotatably connected to the bottom inner side of the connecting part 7 and located on both sides of the lead screw 8. A second hinge rod 13 is rotatably connected to the top of the first hinge rod 12. The top of the second hinge rod 13 is rotatably connected to the bottom of the connecting plate 9. A protective pad 14 is fixedly installed on the top inner side of the connecting part 7 and located on both sides of the lead screw 8. The first hinge rod 12 and the second hinge rod 13 are rotatably connected on the inner side of the connecting part 7 to assist in supporting the connecting plate 9. The top protective pad 14 plays a buffering role and improves the safety of use.

[0025] The support assembly includes a mounting base 15, which is fixedly connected to the connecting part 7 at its surface. A fixing sleeve 16 is fixedly installed on the inner wall of the mounting base 15. A sliding column 17 is slidably connected to the inner side of the fixing sleeve 16. A support base 18 is fixedly installed at the bottom end of the sliding column 17. A limit seat 19 is fixedly installed near the top of the surface of the fixing sleeve 16. A limit bolt 20 is rotatably connected to the front side of the limit seat 19. The sliding column 17 inside the fixing sleeve 16 can slide up and down. After adjusting the support height, the limit bolt 20 on the limit seat 19 is rotated so that it passes through the connecting hole and inserts into the limit hole 21 of the sliding column 17, thus fixing the sliding column 17. The bottom support base 18 enhances stability. Stable support makes it safer for workers to expand the work area, reduces operation interruptions caused by instability, and indirectly improves work efficiency.

[0026] The sliding column 17 has multiple limiting holes 21 on the side away from the telescopic ladder 2, which are adapted to the limiting bolts 20. The fixed sleeve 16 and the limiting seat 19 have connecting holes on their inner sides, which allow the limiting bolts 20 to pass through. The connecting holes allow the limiting bolts 20 to be inserted into the inner side of the limiting holes 21.

[0027] The above embodiment discloses a telescopic ladder, wherein the device is moved to a suitable position, and the operator manually drives the sliding column 17 in the fixed sleeve 16 to slide up and down. After adjusting to a suitable support height, the operator rotates the limiting bolt 20 on the limiting seat 19 so that it passes through the connecting hole and inserts into the limiting hole 21 of the sliding column 17 to fix the sliding column 17. The bottom support base 18 enhances stability. Stable support makes it safer for the operator to expand the working area, reduces operation interruptions caused by instability, and indirectly improves work efficiency. Rotating the adjusting block 11 at the bottom of the connecting part 7 drives the screw 8 to rotate, which in turn drives the connecting plate 9 and the connecting rod 10 to move up and down, realizing the height adjustment of the telescopic ladder 2. This allows the operator to accurately adjust the length of the telescopic ladder 2 to meet different downhole operation length requirements, making the overall length flexible. The telescopic design breaks the fixed length limitation, and the operator does not need to move the ladder frequently. It can cover a larger working area at once, reduce the cumbersome operation, and improve convenience and work efficiency.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A telescoping ladder characterized by: The system includes a main ladder (1), a telescopic ladder (2) on the right side of the main ladder (1), multiple ladder rods (3) fixedly installed on the inner side of the main ladder (1) and the telescopic ladder (2), lifting blocks (4) fixedly installed on the front and rear sides of the telescopic ladder (2) near the bottom, lifting plates (5) fixedly installed on the front and rear sides of the main ladder (1), and lifting grooves for the lifting blocks (4) to slide up and down on the side of the lifting plate (5) away from the main ladder (1). Hanging rings (6) are fixedly installed on the top of the main ladder (1) and the telescopic ladder (2) near the front and rear sides. A connecting part (7) is fixedly installed on the right side of the main ladder (1) and at the bottom of the telescopic ladder (2). An adjustment component is provided on the inner side of the connecting part (7) for adjusting the height of the telescopic ladder (2). Support components are provided on the front and rear sides of the connecting part (7) for supporting the stability of the main ladder (1).

2. A telescoping ladder according to claim 1, wherein: The distance between two adjacent ladder rods (3) is 300 mm, and the surface of the ladder rods (3) is provided with anti-slip grooves.

3. A telescoping ladder according to claim 1, wherein: The adjusting assembly includes a lead screw (8), the top and bottom ends of which are rotatably connected to the inner wall of the connecting part (7). A connecting plate (9) is fitted on the surface of the lead screw (8) and threadedly connected thereto. Multiple connecting rods (10) are fixedly installed on the top of the connecting plate (9) near the front and rear sides. The top of the connecting rod (10) passes through the inner side of the connecting part (7) and is fixedly connected to the bottom of the telescopic ladder (2). An adjusting block (11) for driving the lead screw (8) to rotate is rotatably connected to the bottom of the connecting part (7).

4. A telescoping ladder according to claim 3, wherein: The bottom inner side of the connecting part (7) and the front and rear sides of the lead screw (8) are rotatably connected to a first hinge rod (12), the top of the first hinge rod (12) is rotatably connected to a second hinge rod (13), the top of the second hinge rod (13) is rotatably connected to the bottom of the connecting plate (9), and a protective pad (14) is fixedly installed on the top inner side of the connecting part (7) and the front and rear sides of the lead screw (8).

5. A telescoping ladder according to claim 1, wherein: The support assembly includes a mounting base (15), the surface of which is fixedly connected to the connecting part (7), a fixing sleeve (16) is fixedly installed on the inner side wall of the mounting base (15), a sliding column (17) is provided through the inner side of the fixing sleeve (16) and is slidably connected to it, a support base (18) is fixedly installed at the bottom end of the sliding column (17), a limiting seat (19) is fixedly installed on the surface of the fixing sleeve (16) near the top end, and a limiting bolt (20) is rotatably connected to the front side of the limiting seat (19).

6. A telescoping ladder according to claim 5 wherein: The sliding column (17) has multiple limiting holes (21) on the side away from the telescopic ladder (2) that are compatible with the limiting bolt (20). The fixed sleeve (16) and the limiting seat (19) have connecting holes on their inner sides that allow the limiting bolt (20) to pass through.

Images