Foldable ladder stand for vertical shaft

Abstract

The utility model provides a foldable ladder stand for a vertical shaft, which is formed by splicing a plurality of ladder stand units, and a protective net is foldable, so that the ladder stand is convenient to assemble and disassemble and has safety guarantee. The vertical shaft crawling ladder is formed by butting a plurality of sections of crawling ladder units along the length direction; the crawling ladder unit comprises a crawling ladder and a protective net arranged on the outer side face of the crawling ladder. The protective net can be folded or unfolded relative to the crawling ladder; a plurality of connecting pieces used for being matched with embedded parts in the shaft wall of the vertical shaft are distributed on the two transverse sides of the crawling ladder at intervals in the height direction.

Description

Technical Field

[0001] This utility model relates to a climbing ladder, specifically a foldable climbing ladder for vertical shafts, belonging to the technical field of vertical shaft supporting equipment. Background Technology

[0002] Vertical shaft ladders are specialized climbing devices used in vertical shafts; currently common types of ladders include hydraulic fixed folding ladders and telescopic lifting ladders.

[0003] (1) The hydraulic fixed folding ladder is firmly fixed to the inner wall of the elevator shaft or vertical shaft through a hydraulic structure, so that the operator will not shake when climbing, ensuring the personal safety of the operator, and making it convenient for the operator to stop and operate at any height of the ladder; however, due to the involvement of a hydraulic structure, its installation is complicated and the maintenance cost is high.

[0004] (2) The telescopic escalator is fixed to the shaft wall. Through the setting of limit slides and movable escalators, the escalator can be extended, retracted, and raised as needed. The bottom step of the movable escalator is equipped with guide teeth buckles and slots, which can be firmly fixed to the shaft wall to ensure the stability and safety of the escalator. However, this type of escalator has a complex structure, requiring precise installation of limit slides and fixing devices on the shaft wall, and is inconvenient to install and disassemble.

[0005] In addition, existing vertical shaft ladders cannot simultaneously ensure both convenient installation and dismantling and safety. During installation, ladders and safety nets need to be welded on-site, which is complicated and inconvenient to dismantle. Utility Model Content

[0006] In view of this, the present invention provides a foldable ladder for vertical shafts, which is composed of several ladder units and has a foldable protective net, thus balancing convenient installation and dismantling with safety assurance.

[0007] The technical solution of this utility model is: a vertical shaft climbing ladder, which is formed by connecting several climbing ladder units along the length direction; the climbing ladder unit includes: a climbing ladder and a protective net disposed on the outer side of the climbing ladder;

[0008] The protective netting can be folded or unfolded relative to the ladder;

[0009] The ladder has several connecting parts distributed at intervals along the height direction on both sides for cooperating with the embedded parts in the shaft wall.

[0010] In a preferred embodiment of this utility model, the embedded parts on the shaft wall are embedded bolts, and the ladder unit has several connecting ears distributed at intervals along the height direction on both sides as connecting parts, and the connecting ears are provided with fixing bolt holes.

[0011] In a preferred embodiment of this utility model, the protective net is formed by horizontally connecting protective net plate A, protective net plate B and protective net plate C;

[0012] One horizontal end of the protective mesh panel A is rotatably connected to one horizontal end of the ladder, and the other horizontal end of the protective mesh panel A is rotatably connected to one horizontal end of the protective mesh panel B.

[0013] One horizontal end of the protective mesh plate C is rotatably connected to the other horizontal end of the ladder;

[0014] After the protective net is unfolded, the other side of the protective net plate B is opposite to the other side of the protective net plate C, and the opposing surfaces of the two are provided with mutually cooperating positioning and connecting structures.

[0015] In a preferred embodiment of this utility model, the positioning connection structure includes a positioning pin and a positioning hole.

[0016] As a preferred embodiment of this utility model, protective mesh locking fasteners are respectively installed at the upper and lower ends of the mating surfaces of protective mesh plate A and protective mesh plate B, and at the upper and lower ends of the mating surfaces of protective mesh plate B and protective mesh plate C.

[0017] In a preferred embodiment of this utility model, the protective net locking device is a locking plate with the same bending angle as the included angle between the two protective net plates at the corresponding positions.

[0018] In a preferred embodiment of this utility model, the ladder is provided with a pin and a pin hole at both ends of its longitudinal direction, the pin and the pin hole are in corresponding positions, and adjacent ladder units are connected by the pin and the pin hole.

[0019] In a preferred embodiment of this utility model, a handrail is provided at the top of one of the ladder units.

[0020] Beneficial effects:

[0021] (1) The vertical shaft foldable ladder of this utility model is composed of several ladder units spliced ​​together, and the protective net can be folded or unfolded relative to the ladder, making it convenient to carry and store; at the same time, it is provided with a connector for cooperating with the pre-embedded parts in the shaft wall, which can be directly connected to the shaft wall without on-site welding, and is easy to install and disassemble.

[0022] (2) In the vertical shaft foldable climbing ladder of this utility model, a protective net is provided on the outside of each climbing ladder unit. The protective net and each climbing ladder section are an integral whole. The protective net is folded or unfolded in a rotating manner relative to the climbing ladder. The protective net can be folded up during transportation. When in use, the protective net only needs to be unfolded. No additional operation is required, making it convenient to use.

[0023] (3) In the vertical shaft foldable ladder of this utility model, adjacent ladder units are connected by pin holes and pin shafts; the ladder unit is connected to the pre-embedded parts reserved during the well wall pouring by bolts. During installation, only the bolts need to be tightened to complete the installation of the vertical shaft foldable ladder. During disassembly, the bolts can be unscrewed to recycle the ladder. The installation is simple and easy to complete.

[0024] (4) In the vertical shaft foldable ladder of this utility model, when the protective net is unfolded, protective net locking fasteners are installed at the upper and lower ends of the joint surface between the protective net plate A and the protective net plate B, and at the upper and lower ends of the joint surface between the protective net plate B and the protective net plate C, which can ensure the stability of the structure after the protective net is unfolded. Attached Figure Description

[0025] Figure 1 This is a three-dimensional view of the overall structure of the vertical shaft ladder of this utility model;

[0026] Figure 2 This is a front view of the overall structure of the vertical shaft ladder of this utility model;

[0027] Figure 3 A 3D view of the unfolded state of a single ladder unit;

[0028] Figure 4 Expand the status main view for a single ladder unit;

[0029] Figure 5 A folded 3D diagram of a single ladder unit;

[0030] Figure 6 Expand the collapsed main view for a single ladder unit;

[0031] Figure 7 Unfold a folded top view for a single ladder unit;

[0032] Among them: 1-handrail, 2-climbing ladder unit, 3-safety net, 31-safety net plate A, 32-safety net plate B, 33-safety net plate C, 4-climbing ladder, 5-pin hole, 6-pin shaft, 7-connecting ear, 71-limit bolt hole, 72-fixing bolt hole, 8-rotating connector, 9-safety net locking fastener. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1:

[0035] This embodiment provides a foldable ladder for shafts that is easy to install, dismantle, and transport. It is used to install inside shafts and connect the bottom of the shaft to the ground.

[0036] like Figure 1 and Figure 2As shown, the foldable ladder for the shaft includes several ladder units 2; the ladder units 2 are joined together along the length direction according to the depth of the shaft to form the shaft ladder.

[0037] like Figure 3 and Figure 4 As shown, each folding ladder unit 2 includes: a protective net 3 and a ladder 4; when in use, the side of the ladder 4 facing the shaft wall is its inner side, and the side opposite the inner side is its outer side, that is, the outer side is its climbing surface; the protective net 3 is set on the outer side of the ladder 4; thus a climbing passage is formed between the protective net 3 and the ladder 4.

[0038] For ease of transport, the protective netting 3 is foldable, capable of being folded or unfolded relative to the ladder 4; when in transport or storage condition, the protective netting 3 is folded relative to the ladder 4, fitting snugly against the outer surface of the ladder 4, such as... Figure 5 and Figure 6 As shown, this design saves transportation or storage space; when in use, the protective net 3 unfolds relative to the ladder 4, as... Figure 3 As shown, a climbing passage is formed between the protective net 3 and the ladder 4.

[0039] To achieve the connection between ladder unit 2 and the shaft wall, such as Figure 3 As shown, each ladder unit 2 has several connecting parts distributed at intervals along the height direction on both sides of the horizontal direction for cooperating with the pre-embedded parts in the well wall, thereby enabling the ladder unit 2 to be directly installed on the vertical shaft wall.

[0040] As an example, the embedded parts on the shaft wall are embedded bolts. Several connecting ears 7 are distributed at intervals along the height direction on both sides of the ladder unit 2 as connecting parts. Each connecting ear 7 has a fixing bolt hole 72 for connecting with the embedded bolts in the shaft wall. Preferably, the connecting ears 7 on both sides of the ladder unit 2 are symmetrically arranged.

[0041] As an example, limiting bolt holes 71 are provided on one of the pair of connecting ears 7 on both sides of the ladder unit 2 to facilitate the limiting of the ladder unit 2 during installation.

[0042] To enable the rapid assembly of several ladder units 2, the ladder 4 has pins 6 and pin holes 5 at both ends of its longitudinal direction. The pins 6 and pin holes 5 are positioned correspondingly, and adjacent ladder units 2 are connected by pins 6 and pin holes 5. As an example, the ladder 4 has pins 6 at both ends of its top surface and pin holes 5 at both ends of its bottom surface.

[0043] Therefore, when installing the vertical shaft ladder on site, it adopts bolt connection and socket structure (pin hole and pin shaft), which eliminates the need for on-site welding and makes installation and disassembly convenient.

[0044] As an example, one of the ladder units 2 has no pins 6 at the two ends of the top end face, but instead has handrails 1; in use, the ladder unit 2 with handrails 1 is used as the first ladder unit 2.

[0045] Since the vertical shaft ladder is composed of several ladder units 2 connected together, it can be installed and spliced ​​section by section according to the construction progress. When installing the ladder unit 2, the ladder unit 2 is connected to the embedded parts in the shaft wall through the fixing bolt holes 72, and then the foldable protective net 3 is unfolded (e.g., Figure 3 As shown in the figure, the installation of one ladder unit 2 is now complete.

[0046] The vertical shaft ladder is easy to install and disassemble. After the vertical shaft construction is completed, to dismantle the ladder, simply loosen the bolts in the fixing bolt holes 72 on the connecting lugs 7 of each ladder unit 2 (if there are limit bolt holes 71, loosen the limit bolts). The protective netting 3 can then be folded back into its folded state for transportation.

[0047] Example 2:

[0048] Based on implementation 1 above, this embodiment provides a preferred structural form for realizing the folding of the protective netting 3.

[0049] For ease of description, the width of ladder unit 2 is horizontal, and the length is vertical.

[0050] like Figures 3-7 As shown, in this example, the protective net 3 is composed of three protective net panels connected laterally: protective net panel A31, protective net panel B32, and protective net panel C33. One lateral end of protective net panel A31 is rotatably connected to one lateral end of the ladder 4 via a rotating connector 8 (such as a hinge). The other lateral end of protective net panel A31 is rotatably connected to one lateral end of protective net panel B32 via a rotating connector 8 (such as a hinge). One lateral end of protective net panel C33 is rotatably connected to the other lateral end of the ladder 4 via a rotating connector 8 (such as a hinge). When the protective net 3 is unfolded, the other lateral ends of protective net panel B32 and C33 are opposite each other, and their opposite surfaces are provided with mutually cooperating positioning connection structures. As an example, several positioning connection structures are arranged longitudinally at intervals on their opposite surfaces; these positioning connection structures can be positioning pins and positioning holes.

[0051] Therefore, when it is necessary to fold the protective net 3, disconnect the connection between the protective net plate B32 and the protective net plate C33 (e.g., pull the positioning pin out of the positioning hole), and then rotate the protective net plate C33 around its rotational connection side with the ladder 4 toward the ladder 4 until it is in contact with the ladder 4; rotate the protective net plate A31 around its rotational connection side with the ladder 4 toward the ladder 4 until it is in contact with the ladder 4; rotate the protective net plate B32 around its rotational connection side with the protective net plate A31 outward until it is in contact with the protective net plate A31, thereby achieving the folded state of the protective net 3 as shown in the figure. Figures 5-7 As shown.

[0052] When it is necessary to unfold the protective netting 3, simply reverse the rotation of protective netting panels A31, B32, and C33 to unfold the protective netting 3 as shown. Figure 3 As shown, a trapezoidal climbing passage is formed between the protective net 3 and the ladder 4. Then, the protective net panel B32 and the protective net panel C33 are positioned and connected (e.g., by inserting positioning pins into positioning holes).

[0053] As an example, to ensure the structural stability of the protective net 3 after it is unfolded, protective net locking fasteners 9 are installed at the upper and lower ends of the mating surfaces of protective net panels A31 and B32, and at the upper and lower ends of the mating surfaces of protective net panels B32 and C33, respectively. These fasteners prevent relative rotation between the two protective net panels at these locations. As an example, the protective net locking fasteners 9 are locking plates with a bending angle equal to the included angle between the two protective net panels at the corresponding positions. Mounting holes are pre-set at corresponding positions on the top and bottom of each protective net panel. After the protective net 3 is unfolded into place, the four locking plates are installed at the upper and lower ends of the mating surfaces of protective net panels A31 and B32, and at the upper and lower ends of the mating surfaces of protective net panels B32 and C33, respectively.

[0054] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A shaft foldable ladder, characterized by: The ladder unit (2) comprises a ladder (4) and a protective net (3) arranged on the outer side of the ladder (4). The protective net (3) can be folded or unfolded relative to the ladder (4). A plurality of connecting pieces for cooperating with pre-buried members in the shaft wall are distributed along the height direction on the lateral sides of the ladder (4).

2. The elevator shaft foldable cat ladder of claim 1, wherein, The pre-buried members on the shaft wall are pre-buried bolts, and the connecting ears (7) are distributed along the height direction on the lateral sides of the ladder unit (2) as connecting pieces.

3. The elevator shaft foldable cat ladder of claim 1, wherein, The protective net (3) comprises a protective net plate A (31), a protective net plate B (32) and a protective net plate C (33). The lateral one end of the protective net plate A (31) is rotationally connected with the lateral one end of the ladder (4), and the lateral other end of the protective net plate A (31) is rotationally connected with the lateral one end of the protective net plate B (32). The lateral one end of the protective net plate C (33) is rotationally connected with the lateral other end of the ladder (4). After the protective net (3) is unfolded, the lateral other end of the protective net plate B (32) is opposite to the lateral other end of the protective net plate C (33), and the opposite surfaces of the two are provided with mutually cooperating positioning connection structures.

4. The elevator shaft foldable cat ladder of claim 3, wherein, The positioning connection structure comprises a positioning pin and a positioning hole.

5. The elevator shaft foldable cat ladder of claim 3, wherein, The upper and lower ends of the abutting surfaces of the protective net plate A (31) and the protective net plate B (32) and the upper and lower ends of the abutting surfaces of the protective net plate B (32) and the protective net plate C (33) are respectively provided with protective net locking members (9).

6. The elevator shaft foldable cat ladder of claim 5, wherein, The protective net locking member (9) is a locking plate with a bending angle same as the included angle between the two protective net plates at the corresponding position.

7. A foldable shaft ladder according to any one of claims 1-6, characterized in that The longitudinal two ends of the ladder (4) are respectively provided with a pin shaft (6) and a pin hole (5), the pin shaft (6) and the pin hole (5) are positionally corresponding, and the adjacent ladder units (2) are connected through the pin shaft (6) and the pin hole (5).

8. A shaft ladder according to any one of claims 1 to 6, wherein, The top of one of the ladder units (2) is provided with a handrail (1).

Images