Elevator pit ladder

Abstract

The elevator pit ladder comprises the ground pedal and the telescopic mechanism, the ground pedal is rotated through the inner ladder shaft block, the ladder is convenient to use, carry and transport, the ground pedal is laid at an elevator opening, the stability of the ladder is improved, and the door clamping devices on the door clamping sliding rails slide towards the two sides to abut against the bottoms of the two sides of an elevator door frame. The rotary knob on the door clamping device is used for rotating downwards and fixing, the continuous opening state of an elevator door is completed, elevator maintenance personnel can go in and out conveniently, the inner ladder frame slides in the outer ladder frame, the length of the ladder is changed, the ladder can be fixedly placed in elevator pits with different depths, the L-shaped lock rod in the lock catch is pulled out, and the safety of the elevator is improved. The bottom pit pedal is inserted into the round holes of the outer ladder frame and the inner ladder frame in the center in a rotating mode, the length of the ladder is fixed, the applicability of the ladder to elevator bottom pits with different depths is improved, the bottom pit pedal aims at the bottom pit ground which is possibly wet and soft, the contact area is increased, the friction force is improved, and the operation safety of constructors is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator pit ladder. Background Art

[0002] With the rapid advancement of urbanization, high-rise buildings have gradually become the symbol of the city, and the demand for elevators is also growing rapidly. Usually, the elevator pit is equipped with equipment such as the elevator's counterweight guardrail, elevator buffer base, and drainage device. In order to facilitate the daily inspection and maintenance of these equipment, a ladder is required for the staff to enter and exit the pit.

[0003] According to the search announcement number: CN213301235U, an elevator pit ladder includes: at least one fixed bracket, which is set on the wall of the elevator shaft; at least one set of support arms, one end of which is connected to the fixed bracket and can change the support length; a ladder body, which is connected to the other end of the support arm; and a control component, which is connected to the support arm and can control the support length of the support arm, so that the distance between the ladder body and the wall changes between the farthest distance and the closest distance. The elevator pit ladder of the utility model can occupy a smaller pit space, and avoids the situation where the staff uses arms or tools to reach into the pit to unfold the ladder body, thereby improving the convenience of use.

[0004] However, the following problems exist when implementing the above technical solution: the above technical solution uses multiple sets of support arms to change the height of the ladder and the distance between the ladder and the wall. The design is relatively bloated and the physical structure is relatively complex. The ladder is not stable enough during construction and use, and there is a situation where the ladder is not subjected to sufficient force, resulting in ladder deformation and people falling. The height of the ladder cannot be changed safely and effectively, the elevator door cannot be kept in a continuously open state, the safety of elevator maintenance personnel entering and exiting cannot be avoided, and the needs of elevator maintenance work cannot be completed safely and efficiently. Utility Model Content

[0005] The utility model aims to provide an elevator pit ladder to solve the problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elevator pit ladder, comprising a ground pedal and a telescopic structure, ground axle seats are provided on both sides of the ground pedal, an inner ladder axle block is provided at the inner center of the ground pedal, a slide rail axle seat is provided on the outer side of the inner ladder axle block, a Carmen slide rail is provided on the outer side of the slide rail axle seat, a Carmen device is provided on the outer side of the Carmen slide rail, a telescopic structure is provided at the bottom of the ground pedal, an inner ladder frame is provided at the bottom of the inner ladder axle block, an inner ladder pedal is provided at the inner center of the inner ladder frame, an outer ladder frame is provided on the outer side of the inner ladder frame, a lock is provided on the top outer side of the outer ladder frame, an L-locking rod is provided on the front side of the lock, an outer ladder pedal is provided at the inner center of the outer ladder frame, and a pit pedal is provided at the bottom end center of the outer ladder pedal.

[0007] Preferably, the telescopic structure includes an inner ladder frame, an inner ladder pedal, an outer ladder frame, a lock, an L-locking rod, an outer ladder pedal, a pit pedal, a plastic foot pad and an anti-slip foot. A plastic foot pad is provided in the center of the top of the pit pedal, and an anti-slip foot is provided at the bottom of the pit pedal.

[0008] Preferably, the ground pedal is fixedly connected to the ground shaft seat, two groups of the ground shaft seat are provided, the ground shaft seat is rotatably connected to the inner ladder shaft block, and the ground shaft seat corresponds to the inner ladder shaft block one by one.

[0009] Preferably, the inner ladder shaft block is fixedly connected to the slide rail shaft seat, the inner ladder shaft block and the slide rail shaft seat correspond one to one, the Karman slide rail and the slide rail shaft seat are rotationally connected, the Karman slide rail and the Karman device are slidably connected, two groups of the Karman slide rails are provided, and the Karman slide rails and the Karman device correspond one to one.

[0010] Preferably, the inner ladder frame and the inner ladder pedals are fixedly connected, and four groups of inner ladder pedals are provided. The inner ladder frame and the outer ladder frame are slidably connected. Circular holes are equidistantly provided on the front side of the inner ladder frame. The sizes of the inner ladder frame and the outer ladder frame match. A circular hole is provided on the top front side of the outer ladder frame. The outer ladder frame and the locking buckles are fixedly connected, and two groups of locking buckles are provided. The locking buckles and L-locking rods are rotatably connected, and the locking buckles correspond to the L-locking rods one by one. The L-locking rods pass through the circular holes of the outer ladder frame and are connected to the inner ladder frame slots. The L-locking rods can be connected and fixed to different circular holes of the inner ladder frame by the slots.

[0011] Preferably, the outer ladder frame is fixedly connected to the outer ladder pedals, four groups of the outer ladder pedals are provided, the outer ladder frame is rotatably connected to the pit pedals, and the pit pedals can be rotated forward vertically.

[0012] Preferably, the pit pedal is fixedly connected to the plastic foot pad, the sizes of the pit pedal and the plastic foot pad match, the pit pedal is fixedly connected to the anti-slip feet, and the anti-slip feet are equidistantly arranged.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The ground shaft seat can rotate the ground pedal to expand or store it through the inner ladder shaft block, which is convenient for the use and carrying of the ladder. The ground pedal is laid on the tile floor at the elevator entrance to increase the friction on the top of the ladder and improve the placement stability of the ladder during use. Slide rail shaft seats are set on both sides of the inner ladder shaft block. The slide rail shaft seats can place the door locks on both sides horizontally or rotate them vertically for storage. The door locks on the door lock slide rails are slid to both sides against the bottom of both sides of the elevator door frame, and the knob on the door lock is rotated downward to fix it, thereby completing the continuous opening state of the elevator door, which is convenient for the entry and exit activities of elevator maintenance personnel and improves maintenance safety. The safety of maintenance work is improved by sliding the inner ladder frame in the outer ladder frame to change the length of the ladder. The ladder can be fixed in elevator pits of different depths. The L-locking rods in the locks on both sides of the outer ladder frame are pulled out, rotated inward and inserted into the circular holes of the central outer ladder frame and the inner ladder frame to fix the length of the ladder, thereby improving the applicability of the ladder to elevator pits of different sizes and the working safety of elevator maintenance personnel. The pit pedal increases the contact area and increases the friction for the pit ground that may be wet and soft, fixes the position of the bottom bracket of the ladder, and ensures the operating safety of the construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model in working state;

[0016] Figure 2 This is a schematic diagram of the partial appearance structure of the top inner ladder of the utility model;

[0017] Figure 3 This is a schematic diagram of the partial appearance structure of the bottom outer ladder of the utility model;

[0018] Figure 4 This is a schematic diagram of the appearance structure of the utility model in the stored and folded state.

[0019] Numbers in the figure: 1. Ground pedal; 2. Ground shaft seat; 3. Inner ladder shaft block; 4. Slide rail shaft seat; 5. Carmen slide rail; 6. Carmen device; 7. Telescopic structure; 701. Inner ladder frame; 702. Inner ladder pedal; 703. Outer ladder frame; 704. Lock; 705. L locking rod; 706. Outer ladder pedal; 707. Pit pedal; 708. Plastic foot pad; 709. Anti-slip foot. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] See also Figure 1-4 The utility model provides a technical solution: an elevator pit ladder, comprising a ground pedal 1 and a telescopic structure 7, ground axle seats 2 are arranged on both sides of the ground pedal 1, an inner ladder axle block 3 is arranged at the inner center of the ground pedal 1, a slide rail axle seat 4 is arranged on the outer side of the inner ladder axle block 3, a carmen slide rail 5 is arranged on the outer side of the slide rail axle seat 4, a carmen device 6 is arranged on the outer side of the carmen slide rail 5, a telescopic structure 7 is arranged at the bottom of the ground pedal 1, an inner ladder frame 701 is arranged at the bottom of the inner ladder axle block 3, an inner ladder pedal 702 is arranged at the inner center of the inner ladder frame 701, an outer ladder frame 703 is arranged on the outer side of the inner ladder frame 701, a lock buckle 704 is arranged on the outer side of the top of the outer ladder frame 703, an L locking rod 705 is arranged on the front side of the lock buckle 704, an outer ladder pedal 706 is arranged at the inner center of the outer ladder frame 703, and a pit pedal 707 is arranged at the bottom end center of the outer ladder pedal 706.

[0022] Furthermore, the telescopic structure 7 includes an inner ladder frame 701, an inner ladder pedal 702, an outer ladder frame 703, a lock 704, an L-locking rod 705, an outer ladder pedal 706, a pit pedal 707, a plastic foot pad 708 and an anti-slip foot 709. A plastic foot pad 708 is arranged at the top center of the pit pedal 707, and an anti-slip foot 709 is arranged at the bottom of the pit pedal 707. The plastic foot pad 708 prevents the operator from falling due to wet soles of the shoes, and the anti-slip foot 709 fits the ground to further improve the stability of the ladder and improve the safety of operation.

[0023] Furthermore, the ground pedal 1 is fixedly connected to the ground shaft seat 2, two groups of ground shaft seats 2 are provided, and the ground shaft seat 2 is rotatably connected to the inner ladder shaft block 3. The ground shaft seat 2 corresponds to the inner ladder shaft block 3 one by one. The ground shaft seat 2 can rotate the ground pedal 1 through the inner ladder shaft block 3 to expand or store it, which is convenient for the use and carrying and transportation of the ladder. The ground pedal 1 is laid on the tile floor at the elevator entrance to increase the friction on the top of the ladder and improve the placement stability of the ladder during use.

[0024] Furthermore, the inner ladder shaft block 3 and the slide rail shaft seat 4 are fixedly connected, the inner ladder shaft block 3 and the slide rail shaft seat 4 correspond one to one, the Carmen slide rail 5 and the slide rail shaft seat 4 are rotatably connected, the Carmen slide rail 5 and the Carmen device 6 are slidably connected, and two groups of Carmen slide rails 5 are provided, and the Carmen slide rails 5 and the Carmen device 6 correspond one to one. Slide rail shaft seats 4 are provided on both sides of the inner ladder shaft block 3, and the slide rail shaft seats 4 can horizontally place or vertically rotate and store the Carmen devices 6 on both sides. The Carmen device 6 can slide on the Carmen slide rails 5 on both sides to change its own width, which is suitable for elevator maintenance operations with different elevator door widths. The Carmen device 6 on the Carmen slide rail 5 is slid to both sides against the bottom of both sides of the elevator door frame, and the knob on the Carmen device 6 is rotated downward to fix it, so as to complete the continuous opening state of the elevator door, facilitate the entry and exit activities of elevator maintenance personnel, and improve the safety of maintenance work.

[0025] Furthermore, the inner ladder frame 701 is fixedly connected to the inner ladder pedal 702, and the inner ladder pedal 702 is provided with four groups. The inner ladder frame 701 is slidably connected to the outer ladder frame 703. Circular holes are equidistantly provided on the front side of the inner ladder frame 701. The sizes of the inner ladder frame 701 and the outer ladder frame 703 match each other. A circular hole is provided on the top front side of the outer ladder frame 703. The outer ladder frame 703 is fixedly connected to the lock buckle 704, and the lock buckle 704 is provided with two groups. The lock buckle 704 is rotatably connected to the L lock rod 705. The lock buckle 704 corresponds to the L lock rod 705 one by one. The L lock rod 705 passes through the circular hole of the outer ladder frame 703 and the inner ladder frame 701 is connected by a slot, and an L locking rod 705 can be connected and fixed to different circular holes of the inner ladder frame 701 by a slot. The inner ladder frame 701 slides in the outer ladder frame 703 to change the length of the ladder. The ladder can be fixedly placed in elevator pits of different depths. According to the depth of the elevator pit for construction and maintenance, the length of the ladder is determined and stretched, and the L locking rods 705 in the lock buckles 704 on both sides of the outer ladder frame 703 are pulled out, rotated inwardly and inserted into the circular holes of the central outer ladder frame 703 and the inner ladder frame 701 to complete the fixing of the ladder length, thereby improving the applicability of the ladder to elevator pits of different sizes and the working safety of elevator maintenance personnel.

[0026] Furthermore, the outer ladder frame 703 is fixedly connected to the outer ladder pedal 706, and four groups of the outer ladder pedals 706 are provided. The outer ladder frame 703 is rotatably connected to the pit pedal 707. The pit pedal 707 can be rotated vertically forward. The construction workers step on the inner ladder pedal 702 and the outer ladder pedal 706 to go down into the pit. The pit pedal 707 is placed horizontally on the pit ground. The pit pedal 707 increases the contact area and improves the friction for the pit ground that may be wet and soft, fixes the position of the bottom bracket of the ladder, and ensures the safety of the construction workers' operation.

[0027] Furthermore, the pit pedal 707 is fixedly connected to the plastic foot pad 708, the sizes of the pit pedal 707 and the plastic foot pad 708 match, the pit pedal 707 is fixedly connected to the anti-slip feet 709, the anti-slip feet 709 are evenly arranged and distributed, the plastic foot pad 708 prevents the operator from falling due to wet soles, and the anti-slip feet 709 fit the ground further improve the stability of the ladder and improve the safety of operation.

[0028] Working principle: The elevator maintenance personnel first operate according to the elevator pit maintenance process, move the elevator car to the top floor or other top floors, ensure that the elevator car is fixed, use the triangular key to open the elevator door, and determine the length of the ladder according to the depth of the elevator pit to be repaired and constructed, and stretch it. The inner ladder frame 701 slides in the outer ladder frame 703 to change the length of the ladder so that the ladder is suitable for the elevator pit of the current depth. The L locking rod 705 in the lock buckle 704 on both sides of the outer ladder frame 703 is pulled out, rotated inwardly and inserted into the circular holes of the central outer ladder frame 703 and the inner ladder frame 701 to complete the fixation of the ladder length, thereby improving the applicability of the ladder to elevator pits of different sizes and the working safety of elevator maintenance personnel. The ground pedal 1 is laid on the tile floor at the elevator entrance to increase the friction at the top of the ladder and provide stability for the placement of the ladder during use. Slide rail shaft seats 4 are provided on both sides of the inner ladder shaft block 3. The slide rail shaft seat 4 can The door locks 6 on both sides are placed horizontally, and then the door locks 6 on the door slide rails 5 are slid to both sides against the bottom of the elevator door frame on both sides, and the knobs on the door locks 6 are rotated downward to fix them, thus completing the continuous opening state of the elevator door, facilitating the entry and exit activities of elevator maintenance personnel and improving the safety of maintenance work. Finally, the construction personnel step on the inner ladder pedal 702 and the outer ladder pedal 706 to go down into the pit, and the pit pedal 707 is placed horizontally on the pit floor. The pit pedal 707 increases the contact area and friction for the pit floor that may be wet and soft, fixes the position of the bottom bracket of the ladder, and the plastic foot pad 708 prevents the operator's soles from getting wet and falling. The anti-slip feet 709 fit the ground to further improve the stability of the ladder and improve the operating safety. The ground shaft seat 2 can rotate the ground pedal 1 to unfold or store it through the inner ladder shaft block 3, which is convenient for the use and carrying and transportation of the ladder. In this way, the use process of an elevator pit ladder is completed.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator pit ladder, comprising a ground pedal (1) and a telescopic structure (7), characterized in that: Ground axle seats (2) are arranged on both sides of the ground pedal (1); an inner ladder axle block (3) is arranged at the center of the inner side of the ground pedal (1); a slide rail axle seat (4) is arranged on the outer side of the inner ladder axle block (3); a Carmen slide rail (5) is arranged on the outer side of the slide rail axle seat (4); a Carmen device (6) is arranged on the outer side of the Carmen slide rail (5); a telescopic structure (7) is arranged at the bottom of the ground pedal (1); an inner ladder frame (701) is arranged at the bottom of the inner ladder axle block (3); An inner ladder pedal (702) is arranged at the center of the inner side of the inner ladder frame (701), an outer ladder frame (703) is arranged on the outer side of the inner ladder frame (701), a lock (704) is arranged on the outer side of the top of the outer ladder frame (703), an L-locking rod (705) is arranged on the front side of the lock (704), an outer ladder pedal (706) is arranged at the center of the inner side of the outer ladder frame (703), and a pit pedal (707) is arranged at the center of the bottom end of the outer ladder pedal (706).

2. An elevator pit ladder according to claim 1, characterized in that: The telescopic structure (7) comprises an inner ladder frame (701), an inner ladder pedal (702), an outer ladder frame (703), a lock (704), an L-locking rod (705), an outer ladder pedal (706), a pit pedal (707), a plastic foot pad (708) and an anti-slip foot (709), wherein a plastic foot pad (708) is arranged at the center of the top of the pit pedal (707), and an anti-slip foot (709) is arranged at the bottom of the pit pedal (707).

3. The elevator pit ladder according to claim 1, characterized in that: The ground pedal (1) is fixedly connected to the ground shaft seat (2), two groups of the ground shaft seat (2) are provided, the ground shaft seat (2) is rotatably connected to the inner ladder shaft block (3), and the ground shaft seat (2) and the inner ladder shaft block (3) correspond one to one.

4. The elevator pit ladder according to claim 1, characterized in that: The inner ladder shaft block (3) and the slide rail shaft seat (4) are fixedly connected, and the inner ladder shaft block (3) and the slide rail shaft seat (4) correspond one to one. The Carmen slide rail (5) and the slide rail shaft seat (4) are rotatably connected, and the Carmen slide rail (5) and the Carmen device (6) are slidably connected. Two groups of the Carmen slide rails (5) are provided, and the Carmen slide rails (5) and the Carmen device (6) correspond one to one.

5. The elevator pit ladder according to claim 1, characterized in that: The inner ladder frame (701) is fixedly connected to the inner ladder pedal (702), and four groups of inner ladder pedals (702) are provided. The inner ladder frame (701) is slidably connected to the outer ladder frame (703). Circular holes are equidistantly provided on the front side of the inner ladder frame (701). The sizes of the inner ladder frame (701) and the outer ladder frame (703) match each other. A circular hole is provided on the top front side of the outer ladder frame (703). 3) is fixedly connected with the lock buckle (704), and the lock buckle (704) is provided with two groups. The lock buckle (704) and the L lock rod (705) are rotatably connected. The lock buckle (704) and the L lock rod (705) correspond to each other one by one. The L lock rod (705) passes through the circular hole of the outer ladder frame (703) and is connected with the slot of the inner ladder frame (701). The L lock rod (705) can be connected and fixed to different circular holes of the inner ladder frame (701) through the slot.

6. The elevator pit ladder according to claim 1, characterized in that: The outer ladder frame (703) is fixedly connected to the outer ladder pedal (706), and four groups of the outer ladder pedal (706) are provided. The outer ladder frame (703) is rotatably connected to the pit pedal (707), and the pit pedal (707) can be rotated forward vertically.

7. An elevator pit ladder according to claim 2, characterized in that: The pit pedal (707) is fixedly connected to the plastic foot pad (708), the sizes of the pit pedal (707) and the plastic foot pad (708) match, the pit pedal (707) is fixedly connected to the anti-skid feet (709), and the anti-skid feet (709) are arranged at equal distances.

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