Rotatable inclined ladder and linkage mechanism

Abstract

The utility model discloses a rotatable inclined ladder and a linkage mechanism, which comprise a wall hanging piece fixedly arranged on the wall of an elevator shaft; the upper supporting frame is rotatably mounted on the wall hanging piece; the lower supporting frame is rotatably installed on the wall hanging piece, and the length of the upper supporting frame is smaller than that of the lower supporting frame; a kidney-shaped hole is formed in the upper end of the crawling ladder body, a connecting shaft is arranged on the upper supporting frame and penetrates through the kidney-shaped hole, and the bottom of the crawling ladder body is rotatably installed on the lower supporting frame; and the control assembly comprises a pull rope, a fixed pulley block and a fixed bolt. Compared with the prior art, the elevator pit ladder stand solves the problems that an existing elevator pit ladder stand is inconvenient to use and occupies the space of a hoistway.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator pit ladders, in particular to a rotatable inclined ladder and a linkage mechanism. Background Art

[0002] A pit ladder is usually set up in the elevator shaft, and personnel enter the pit from the floor door entrance position by ladder. There are two main types of existing pit ladders: one is to place the ladder directly in the pit through a rope or chain fixed at the floor door, and the other is a fixed wall ladder set on the shaft wall.

[0003] If the ladder is placed directly in the pit, it will be placed randomly without a fixed position, and it is easy to be corroded by water brought into the pit. Long-term use may cause problems such as bumps, breakage or paint peeling. For retractable ladders, each step needs to be lifted and lowered. For conventional fixed wall-mounted ladders, it will take up space in the well and affect the size of the elevator. Utility Model Content

[0004] The utility model aims to provide a rotatable inclined ladder and a linkage mechanism to solve the problems that the existing elevator pit ladder is inconvenient to use and occupies hoistway space.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rotatable inclined ladder and a linkage mechanism, comprising:

[0006] A wall hanger, which is fixedly mounted on the elevator shaft wall;

[0007] An upper support frame, which is rotatably mounted on the wall hanger;

[0008] The lower support frame is rotatably mounted on the wall hanger, and the length of the upper support frame is smaller than that of the lower support frame;

[0009] The ladder body has a waist-shaped hole at its upper end, and a connecting shaft is provided on the upper support frame, the connecting shaft is passed through the waist-shaped hole, and the bottom of the ladder body can be rotatably mounted on the lower support frame;

[0010] The control component includes a pulling rope, a fixed pulley group and a fixing bolt. One end of the pulling rope is fixedly installed on the ladder body, and the other end is detachably installed on the fixing bolt. The pulling rope passes around the fixed pulley group, and the fixing bolt is fixedly installed on the sill of the hall door.

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

[0012] A rocker switch is arranged on the wall hanging, and the position of the rocker switch corresponds to the upper supporting frame.

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

[0014] Symmetrically arranged connecting shafts are provided on both sides of the upper support frame.

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

[0016] The connecting shaft passes through the waist-shaped hole and then is threadedly connected to the nut.

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

[0018] The pulling rope is a steel wire rope.

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

[0020] The wall hanger is fixed on the elevator shaft wall by expansion bolts.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. In the present invention, when the hoistway space is limited, the folding ladder will fully utilize the hoistway space and make the car as large as possible.

[0023] 2. In the present invention, compared with the folding ladder that is in a vertical state when used, the vertical ladder has a high safety risk and requires certain training for personnel to operate, while the inclined ladder in the present application can be safely and conveniently ascended and descended.

[0024] 3. In the utility model, when the well is relatively large and the floor door is relatively far from the well walls on both sides, a steel wire rope and a fixed pulley combination are used to loosen the ladder, so that when resetting, the ladder can be brought to a position close to the wall by pulling the steel wire rope to achieve folding and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The utility model is a schematic diagram of a rotatable inclined ladder and a linkage mechanism.

[0027] Figure 2 The present invention is a schematic diagram of the folding of a rotatable inclined ladder and a linkage mechanism.

[0028] Figure 3 A schematic diagram of a rotatable inclined ladder and linkage mechanism Figure 1 .

[0029] Figure 4 A schematic diagram of a rotatable inclined ladder and linkage mechanism Figure 2 .

[0030] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Wall hanger; 2. Upper support frame; 21. Connecting shaft; 211. Nut; 3. Lower support frame; 4. Ladder body; 41. Waist-shaped hole; 5. Control assembly; 51. Pull rope; 52. Fixed pulley block; 53. Fixing bolt; 9. Rocker switch. DETAILED DESCRIPTION

[0033] 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 of 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.

[0034] Example 1

[0035] See also Figure 1-5 The utility model provides a technical solution: a rotatable inclined ladder and a linkage mechanism, comprising:

[0036] A wall hanger 1, which is fixedly mounted on the elevator shaft wall;

[0037] An upper support frame 2, which is rotatably mounted on the wall hanger 1;

[0038] The lower support frame 3 is rotatably mounted on the wall hanger 1, and the length of the upper support frame 2 is smaller than the length of the lower support frame 3;

[0039] The ladder body 4 has a waist-shaped hole 41 at its upper end, and the upper support frame 2 is provided with a connecting shaft 21, which passes through the waist-shaped hole 41, and the bottom of the ladder body 4 can be rotatably mounted on the lower support frame 3;

[0040] The control assembly 5 includes a pulling rope 51, a fixed pulley block 52 and a fixing bolt 53. One end of the pulling rope 51 is fixedly mounted on the ladder body 4, and the other end is detachably mounted on the fixing bolt 53. The pulling rope 51 passes around the fixed pulley block 52, and the fixing bolt 53 is fixedly mounted on the sill of the hall door.

[0041] At least two fixed bolts 53 are provided on the sill of the hall door. The pull rope 51 can be connected to the head of the fixing bolt 53 through a ring, a hook or other similar parts provided at the end, so as to realize the detachable installation of the pull rope 51 and the fixing bolt 53. One fixing bolt 53 close to the ladder body 4 is used as a fixing point after the ladder body 4 is unfolded, and another fixing bolt 53 far from the ladder body 4 is used as a fixing point after the ladder body 4 is folded.

[0042] When the ladder is in use, the connection between the pull rope 51 and the fixing bolt 53 is loosened, and the ladder body 4 is unfolded under the action of gravity. After the ladder body 4 is released into place, the pull rope 51 and another fixing bolt 53 are fixed, and the upper support frame 2 and the lower support frame 3 form a support structure of the ladder body 4 that is short on the top and long on the bottom, so that the ladder body 4 is in an inclined state when in use, and it can be safely and conveniently climbed up and down. When the ladder is folded, the pull rope 51 is pulled, and the pull rope 51 lifts the ladder body 4 upward, and the connecting shaft 21 slides in the waist-shaped hole 41. The ladder body 4 and the control component 5 form a linkage control, and the structural linkage operation ensures that the user can retract and put away the ladder at the entrance.

[0043] A rocker switch 9 is provided on the wall hanging 1, and the position of the rocker switch 9 corresponds to the upper support frame 2. When the ladder is in use, after the ladder body 4 is unfolded downward, the upper support frame 2 releases the squeezing of the rocker arm head of the rocker switch 9, and the rocker switch 9 cuts off the power circuit, so that the car will not move during the use of the ladder. Afterwards, when the ladder is retracted and reset, the upper support frame 2 is close to the well wall and squeezes the rocker arm head of the rocker switch 9 to reset it, and the elevator can be operated normally at this time.

[0044] Symmetrically arranged connecting shafts 21 are provided on both sides of the upper support frame 2. The connecting shafts 21 pass through the waist-shaped holes 41 and are threadedly connected to the nuts 211 to ensure that the ladder body 4 can be stably retracted and released.

[0045] The pulling rope 51 is a steel wire rope, which improves the load-bearing capacity of the ladder and is not easy to be stretched and broken.

[0046] The wall hanger 1 is fixedly mounted on the elevator shaft wall by expansion bolts, which effectively fixes the wall hanger 1 and prevents the ladder body 4 from being loosened or falling off.

[0047] Working principle: Usually there is a certain distance between the ladder and the landing door entrance, and vertical ladders require certain training for operators, so inclined ladders are set up for use. Inclined ladders can be safely and conveniently moved up and down. When the shaft is relatively large, the length of the ladder connection support can be increased. When the folding ladder is lowered, it can ensure that the distance to the entrance position is closer, making it easier for operators to cross between the landing door entrance and the ladder.

[0048] In the case of limited shaft space, the folding ladder will make full use of the shaft space and make the car as large as possible. Compared with the folding ladder that is in a vertical state when in use, the vertical ladder has a high safety risk, which requires certain training for personnel to operate. The inclined ladder in this application can go up and down safely and conveniently. When the shaft is relatively large and the floor door is far away from the shaft walls on both sides, a combination of wire rope and fixed pulley is used to loosen the ladder, so that when resetting, the ladder can be brought close to the wall by pulling the wire rope to achieve folding and storage.

[0049] The above description 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 rotatable inclined ladder and linkage mechanism, characterized in that: include: A wall hanger, which is fixedly mounted on the elevator shaft wall; An upper support frame rotatably mounted on the wall hanger; A lower support frame, which is rotatably mounted on the wall hanger, and the length of the upper support frame is smaller than the length of the lower support frame; The ladder body has a waist-shaped hole at its upper end, the upper support frame is provided with a connecting shaft, the connecting shaft is passed through the waist-shaped hole, and the bottom of the ladder body can be rotatably mounted on the lower support frame; A control assembly includes a pulling rope, a fixed pulley block and a fixing bolt. One end of the pulling rope is fixedly mounted on the ladder body, and the other end is detachably mounted on the fixing bolt. The pulling rope passes around the fixed pulley block, and the fixing bolt is fixedly mounted on the sill of the hall door.

2. A rotatable inclined ladder and linkage mechanism according to claim 1, characterized in that: A rocker switch is arranged on the wall hanging, and the position of the rocker switch corresponds to the upper supporting frame.

3. A rotatable inclined ladder and linkage mechanism according to claim 1, characterized in that: The connecting shafts are symmetrically arranged on both sides of the upper support frame.

4. A rotatable inclined ladder and linkage mechanism according to claim 3, characterized in that: The connecting shaft passes through the waist-shaped hole and then is threadedly connected to the nut.

5. A rotatable inclined ladder and linkage mechanism according to claim 1, characterized in that: The pulling rope is a steel wire rope.

6. A rotatable inclined ladder and linkage mechanism according to claim 1, characterized in that: The wall hanger is fixedly mounted on the elevator shaft wall by expansion bolts.

Images