Lift car limiting device for elevator maintenance

Abstract

The utility model relates to the technical field of elevator maintenance, and discloses a lift car limiting device for elevator maintenance, which comprises a mounting plate, a limiting mechanism is arranged on the mounting plate, the limiting mechanism comprises a fixing frame and a guide rod, and the guide rod is fixedly connected inside the fixing frame. The mounting plate is mounted on the shaft wall of the bottom end of the elevator shaft, when an elevator needs to be overhauled, the lift car is moved to the bottom of the elevator shaft, the lift car falls on the limiting seat, the limiting seat can move downwards under the downward pressure of the lift car, the descending force of the limiting seat can be buffered by the spring, and the lift car is prevented from being overhauled. The problem of collision damage caused by contact between the lift car and the limiting seat is avoided, after the lift car stops stably, the hydraulic oil cylinder is started to push the tooth block to move in the direction of the mounting plate, the tooth block is meshed with the tooth plate, and therefore the position of the limiting seat is fixed, the limiting seat can achieve the purpose of limiting and supporting the lift car, and the service life of the lift car is prolonged. And therefore, the safety during elevator maintenance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator maintenance technical field, concretely is a car limiting device for elevator maintenance. BACKGROUND

[0002] The elevator is the permanent transportation equipment that its car runs in at least two columns vertical to the horizontal plane or with the inclination angle of less than 15 DEG to rigid track movement that serves in building several specific floors. Also the step type, step board is installed on the continuous operation of track, commonly known as escalator or moving sidewalk. The fixed type lifting equipment that serves the prescribed floor. Vertical lifting elevator has a car, and runs between at least two columns vertical or inclination angle less than 15 DEG rigid guide rail. The car size and structure form facilitate passenger access or loading and unloading goods. Traditionally, regardless of its driving mode, the elevator is used as the general term of vertical transport tool in building.

[0003] At present, the elevator needs to be moved to the bottom end of the elevator shaft when overhauling, and stopping is realized through electrical control. However, the electrical control may lead to the failure of controlling the car due to the disorder of the controller system, thereby causing danger. Therefore, a car limiting device for elevator maintenance is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model provides a car limiting device for elevator maintenance to solve the technical problems in the prior art.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a car limiting device for elevator maintenance, which comprises a mounting plate, and a limiting mechanism is arranged on the mounting plate.

[0006] The limiting mechanism comprises a fixed frame and a guide rod, the guide rod is fixedly connected to the inside of the fixed frame, a spring is sleeved on the guide rod, a moving seat is slidably connected to the guide rod, a limiting seat is fixedly connected to the moving seat, a fixed plate is fixedly connected to the moving seat, a hydraulic oil cylinder is fixedly connected to the fixed plate, a tooth block is fixedly connected to the extension end of the hydraulic oil cylinder, a tooth plate is fixedly connected to the mounting plate, and a limiting rod is fixedly connected to the tooth block.

[0007] Preferably, a guide hole is formed in the moving seat, the guide rod penetrates the inside of the guide hole, the lower end of the spring abuts against the inner wall of the fixed frame, and the upper end of the spring abuts against the bottom of the moving seat. The guide hole and the guide rod can limit and guide the moving seat.

[0008] Preferably, the fixing bracket is fixedly connected to the mounting plate, and the mounting plate is provided with fastening holes. There are two guide holes, which are respectively opened on the left side and the right side of the upper surface of the limiting seat. The fastening holes make it easy for the mounting plate to be fixed to the wall of the elevator shaft by bolts.

[0009] Preferably, the fixing plate has a limiting hole, and the limiting rod passes through the inside of the limiting hole. The limiting hole and the limiting rod can limit the tooth block.

[0010] Preferably, the limiting seat is provided with a protective mechanism, which includes a rubber pad. The rubber pad is adhered to the upper surface of the limiting seat, and the protective mechanism can protect the bottom of the car.

[0011] Preferably, a positioning post is fixedly connected to the bottom of the rubber pad, and a positioning hole is provided on the limiting seat. The positioning post is inserted into the positioning hole. The positioning hole and positioning post can prevent the rubber pad from shifting.

[0012] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0013] 1. This elevator maintenance car limiting device involves installing a mounting plate on the bottom wall of the elevator shaft. When the elevator needs maintenance, the car is moved to the bottom of the elevator shaft, allowing it to rest on the limiting seat. The limiting seat moves downward under the downward pressure of the car, and its spring cushions the descent force, preventing collision damage between the car and the limiting seat. After the car stops and stabilizes, the hydraulic cylinder is activated to push the toothed block towards the mounting plate, causing the toothed block to mesh with the toothed plate, thereby fixing the position of the limiting seat. The limiting seat provides limiting support for the car, thus improving safety during elevator maintenance.

[0014] 2. The elevator maintenance car limit device, by setting a rubber pad on the limit seat, can avoid direct contact between the car and the limit seat, thus preventing wear on the bottom of the car and further improving the practicality of the car limit device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the limiting seat structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the mounting plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the bottom structure of the rubber pad of this utility model.

[0020] In the diagram: 1. Mounting plate; 2. Limiting mechanism; 201. Fixing frame; 202. Guide rod; 203. Spring; 204. Toothed plate; 205. Moving seat; 206. Limiting seat; 207. Guide hole; 208. Toothed block; 209. Fixing plate; 210. Hydraulic cylinder; 211. Limiting hole; 212. Limiting rod; 3. Protection mechanism; 301. Rubber pad; 302. Positioning hole; 303. Positioning post; 4. Fastening hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0025] Please see Figures 1-5One embodiment of this utility model is: an elevator car limiting device for elevator maintenance, including a mounting plate 1, on which a limiting mechanism 2 is provided;

[0026] The limiting mechanism 2 includes a fixed frame 201 and a guide rod 202. The guide rod 202 is fixedly connected inside the fixed frame 201. A spring 203 is sleeved on the guide rod 202. A movable seat 205 is slidably connected to the guide rod 202. A limiting seat 206 is fixedly connected to the movable seat 205. A fixed plate 209 is fixedly connected to the movable seat 205. A hydraulic cylinder 210 is fixedly connected to the fixed plate 209. A toothed block 208 is fixedly connected to the telescopic end of the hydraulic cylinder 210. A toothed plate 204 is fixedly connected to the mounting plate 1. A limiting rod 212 is fixedly connected to the toothed block 208. The mounting plate 1 is installed on the bottom wall of the elevator shaft. When the elevator needs maintenance, the car is moved to the bottom of the elevator shaft, allowing it to rest on the limit seat 206. The limit seat 206 will move downwards under the downward pressure of the car, and the spring 203 will buffer the downward force to prevent the car from colliding and causing damage. After the car stops and stabilizes, the hydraulic cylinder 210 is activated to push the toothed block 208 towards the mounting plate 1, so that the toothed block 208 meshes with the toothed plate 204, thereby fixing the position of the limit seat 206. The limit seat 206 can provide limiting support for the car, thereby improving the safety during elevator maintenance.

[0027] The movable seat 205 has a guide hole 207, and the guide rod 202 passes through the interior of the guide hole 207. The lower end of the spring 203 abuts against the inner wall of the fixed frame 201, and the upper end of the spring 203 abuts against the bottom of the movable seat 205. The guide hole 207 and the guide rod 202 can limit and guide the movable seat 205.

[0028] The fixing bracket 201 is fixedly connected to the mounting plate 1. The mounting plate 1 has fastening holes 4 and two guide holes 207. The two guide holes 207 are respectively opened on the left side and the right side of the upper surface of the limit seat 206. The fastening holes 4 make it easy to fix the mounting plate 1 to the wall of the elevator shaft with bolts.

[0029] A limiting hole 211 is provided on the fixing plate 209, and a limiting rod 212 passes through the interior of the limiting hole 211. The limiting hole 211 and the limiting rod 212 can limit the tooth block 208.

[0030] Working principle: By installing the mounting plate 1 on the bottom wall of the elevator shaft, when the elevator needs maintenance, the car is moved to the bottom of the elevator shaft, so that the car lands on the limit seat 206. The limit seat 206 will move downward under the downward pressure of the car, and the spring 203 will buffer the downward force to avoid collision damage between the car and the limit seat 206. After the car stops and stabilizes, the hydraulic cylinder 210 is activated to push the tooth block 208 towards the mounting plate 1, so that the tooth block 208 meshes with the tooth plate 204, thereby fixing the position of the limit seat 206. The limit seat 206 can provide limit support for the car, thereby improving the safety during elevator maintenance.

[0031] Please see Figures 1-5 Based on the above embodiments, in another embodiment of the present invention, a protective mechanism 3 is provided on the limiting seat 206. The protective mechanism 3 includes a rubber pad 301, which is adhered to the upper surface of the limiting seat 206. The protective mechanism 3 can protect the bottom of the car.

[0032] A positioning post 303 is fixedly connected to the bottom of the rubber pad 301. A positioning hole 302 is provided on the limiting seat 206. The positioning post 303 is inserted into the positioning hole 302. The positioning hole 302 and the positioning post 303 can prevent the rubber pad 301 from shifting.

[0033] Working principle: By setting a rubber pad 301 on the limit seat 206, the setting of the rubber pad 301 can avoid the car from directly contacting the limit seat 206 and causing wear on the bottom of the car, thus further improving the practicality of the car limit device.

[0034] This utility model provides a car limiting device for elevator maintenance. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A car stop device for elevator repair, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a limiting mechanism (2); The limiting mechanism (2) comprises a fixed frame (201) and a guide rod (202), the guide rod (202) is fixedly connected in the fixed frame (201), a spring (203) is sleeved on the guide rod (202), a moving seat (205) is slidably connected on the guide rod (202), a limiting seat (206) is fixedly connected on the moving seat (205), a fixed plate (209) is fixedly connected on the moving seat (205), a hydraulic oil cylinder (210) is fixedly connected on the fixed plate (209), a tooth block (208) is fixedly connected on the telescopic end of the hydraulic oil cylinder (210), a tooth plate (204) is fixedly connected on the mounting plate (1), and a limiting rod (212) is fixedly connected on the tooth block (208).

2. The car positioner of claim 1, wherein: The moving seat (205) is provided with a guide hole (207), the guide rod (202) penetrates the inside of the guide hole (207), the lower end of the spring (203) abuts against the inner wall of the fixed frame (201), and the upper end of the spring (203) abuts against the bottom of the moving seat (205).

3. The elevator car arresting device for maintenance according to claim 2, characterized in that: The fixed frame (201) is fixedly connected on the mounting plate (1), the mounting plate (1) is provided with a fastening hole (4), the number of the guide hole (207) is two, and the two guide holes (207) are respectively arranged on the left side and the right side of the upper surface of the limiting seat (206).

4. The car positioner of claim 1, wherein: The fixed plate (209) is provided with a limiting hole (211), and the limiting rod (212) penetrates the inside of the limiting hole (211).

5. The elevator car positioner of claim 1, wherein: The limiting seat (206) is provided with a protection mechanism (3), the protection mechanism (3) comprises a rubber pad (301), and the rubber pad (301) is bonded on the upper surface of the limiting seat (206).

6. The elevator car arresting device for maintenance according to claim 5, characterized in that: The bottom of the rubber pad (301) is fixedly connected with a positioning column (303), the limiting seat (206) is provided with a positioning hole (302), and the positioning column (303) is inserted into the inside of the positioning hole (302).

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