Lift car limiting device for elevator maintenance

Abstract

The utility model relates to the technical field of elevator maintenance, in particular to a lift car limiting device for elevator maintenance, which comprises a shell, a transmission shell is arranged in the middle of the top end of the shell, and a lifting mechanism is arranged in the transmission shell. T-shaped grooves are formed in the two ends of the shell, and T-shaped blocks are movably installed in the T-shaped grooves. The operation process is simple, when an elevator breaks down, maintenance personnel only need to start the motor, the motor drives the screw to rotate, due to the fact that the lifting base is in sliding connection with the guide blocks, the lifting base can linearly descend, then the driving blocks at the two ends are driven, and finally the T-shaped block is inserted into the elevator guide rail clamping groove for limiting. Complex tools and tedious steps are not needed in the whole operation process, and compared with an elevator car limiting device needing special tools or complex operation procedures in the prior art, the elevator car limiting device greatly saves the operation time of maintenance personnel during emergency maintenance, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] In modern architecture, the elevator is an indispensable vertical transport tool. With the increasing frequency of elevator use, the maintenance and protection of the elevator become crucial. In the field of elevator maintenance, when the elevator fails, the maintenance personnel need to ensure the safety during the maintenance process, especially the stability of the car.

[0003] The existing car limiting device is not convenient for maintenance personnel to operate quickly in the maintenance scene. Some devices require special tools or complex operation procedures during installation and use, which will waste a lot of time in the case of emergency and efficient handling of elevator maintenance.

[0004] Moreover, the existing device may not provide sufficient limiting effect after limiting the car, resulting in a small displacement of the car during maintenance, which poses a safety risk to the maintenance personnel when they perform maintenance operations near the car, such as the possibility of injury to the maintenance personnel or damage to the tools and equipment due to accidental movement of the car. INVENTION CONTENTS

[0005] The utility model aims at providing a car limiting device for elevator maintenance to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A car limiting device for elevator maintenance, comprising

[0008] A housing is provided with a transmission housing in the middle of the top end, and a lifting mechanism is provided inside the transmission housing.

[0009] T-shaped grooves are formed at both ends of the housing, T-shaped blocks are movably installed inside the T-shaped grooves, and a limiting mechanism is provided at the inner end of the T-shaped block close to the housing.

[0010] Preferably, the lifting mechanism comprises a lifting groove vertically arranged between the transmission housing and the housing, a lifting seat movably installed inside the lifting groove and located at one end of the transmission housing, a motor fixedly installed at the middle of the top end of the transmission housing, an output shaft of the motor fixedly installed with a screw rod through the transmission housing, and a threaded groove with screw threads connected to the screw rod is formed in the middle of the lifting seat.

[0011] Preferably, the inside upper end of the transmission housing is further provided with guide blocks on both sides, and the upper end of the lifting seat is slidably connected with the guide blocks.

[0012] Preferably, the limiting mechanism comprises a driving block, the driving block is arranged horizontally at the inner end of the T-shaped block close to the lifting groove, and an inclined surface is arranged on the side of the driving block close to the lifting groove.

[0013] Preferably, the limiting mechanism further comprises a guide groove, the guide groove is arranged below the housing close to the driving block, a spring is arranged in the guide groove and away from the side of the lifting groove, and a movable block fixedly connected with the spring is arranged below the driving block and close to the side of the lifting groove.

[0014] Preferably, a friction plate is arranged at the end of the T-shaped block away from the driving block.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The car limiting device for elevator maintenance, the operation process of the device is simple, when the elevator fails, the maintenance personnel only need to start the motor, the motor drives the screw to rotate, the lifting seat can be lowered linearly due to the sliding connection between the lifting seat and the guide block, thereby driving the driving blocks at both ends, finally realizing that the T-shaped block is inserted into the elevator guide rail clamping groove for limiting, the whole operation process does not need complex tools and tedious steps, compared with the car limiting device in the prior art which needs special tools or complex operation process, the device greatly saves the operation time of the maintenance personnel in emergency maintenance, and improves the maintenance efficiency.

[0017] 2. The car limiting device for elevator maintenance, when the T-shaped block is inserted into the elevator guide rail clamping groove for limiting, since the driving block abuts against the outer side surface of the lifting seat and the angle between them is perpendicular, when the T-shaped block is stressed, the T-shaped block will not retreat towards the inner side of the T-shaped groove, and in the process of lowering and lifting the lifting seat, the spring can well control the movement of the guide block, so that the accurate insertion and withdrawal of the T-shaped block are ensured, the existing car limiting device can not provide sufficient limiting effect, and the technical scheme can ensure that the car does not appear slight displacement in the maintenance process, which is a very important safety guarantee for the maintenance personnel to perform maintenance operation near the car. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole front view structural schematic diagram of the utility model;

[0019] Figure 2 It is a whole front view structural schematic diagram of the utility model;

[0020] Figure 3 It is a whole front view structural schematic diagram of the utility model; Figure 2 It is an enlarged schematic diagram of A in the utility model;

[0021] Figure 4 It is a whole front view structural schematic diagram of the utility model;Figure 2 Amplified schematic view at B.

[0022] In the figure: 1, shell; 2, transmission shell; 3, T-shaped groove; 4, T-shaped block; 5, lifting groove; 6, lifting seat; 7, motor; 8, screw rod; 9, threaded groove; 10, guide block; 11, driving block; 12, guide groove; 13, spring; 14, movable block; 15, friction plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] As Figures 1-4 shown, a technical scheme provided by the utility model:

[0025] A car limiting device for elevator maintenance, comprising a shell 1, a transmission shell 2 is arranged at the middle of the top end of the shell 1, a lifting mechanism is arranged in the transmission shell 2, the lifting mechanism comprises a lifting groove 5, the lifting groove 5 is vertically arranged between the transmission shell 2 and the shell 1, a lifting seat 6 is movably installed in the lifting groove 5 and at one end of the transmission shell 2, a motor 7 is fixedly installed at the middle of the top end of the transmission shell 2, a screw rod 8 is fixedly installed on the output shaft of the motor 7 and passes through the transmission shell 2, a threaded groove 9 is formed in the middle of the lifting seat 6 and is threadedly connected with the screw rod 8, guide blocks 10 are further arranged at the upper end of the transmission shell 2, the upper end of the lifting seat 6 is slidably connected with the guide blocks 10, and a friction plate 15 is arranged at the end of the T-shaped block 4 away from the driving block 11.

[0026] In the embodiment, when the elevator stops at a position far away from the elevator door due to failure, the motor 7 can be started, the motor 7 drives the screw rod 8 to rotate after being started, the lifting seat 6 linearly descends when the screw rod 8 rotates because the lifting seat 6 is slidably connected with the guide blocks 10, the driving blocks 11 at both ends are driven to descend when the lifting seat 6 descends, the driving block 11 moves horizontally outward along the T-shaped groove 3 until the end of the driving block 11 close to the lifting seat 6 abuts against the outer side surface of the lifting seat 6 and stops, and thus the T-shaped block 4 is inserted into the preset clamping groove in the elevator guide rail and is limited.

[0027] As Figure 2 and Figure 4As shown, T-shaped grooves 3 are formed at both ends of the shell 1, T-shaped blocks 4 are movably installed in the T-shaped grooves 3, limit mechanisms are arranged at the inner end of the T-shaped blocks 4 close to the shell 1, the limit mechanisms comprise driving blocks 11, the driving blocks 11 are horizontally arranged at the inner end of the T-shaped blocks 4 close to the lifting grooves 5, the side of the driving blocks 11 close to the lifting grooves 5 is provided with an inclined surface, the limit mechanisms further comprise guide grooves 12, the guide grooves 12 are arranged below the driving blocks 11 close to the shell 1, springs 13 are arranged in the inner end of the guide grooves 12 away from the lifting grooves 5, movable blocks 14 fixedly connected with the springs 13 are arranged at the side of the driving blocks 11 below and close to the lifting grooves 5;

[0028] In the embodiment, since the driving blocks 11 abut against the outer side surface of the lifting seats 6 and the angles of the two are perpendicular, when the T-shaped blocks 4 are stressed, the T-shaped blocks 4 will not retreat towards the inner side of the T-shaped grooves 3; moreover, when the lifting seats 6 descend, the driving blocks 11 are driven outward, and the guide blocks 10 press the springs 13 in the guide grooves 12, and when the lifting seats 6 lift and retract, the springs 13 in the compressed state control the guide blocks 10 to rebound, so that the T-shaped blocks 4 quickly enter the T-shaped grooves 3.

[0029] Working principle: the device is arranged at the middle part of the bottom end outside of the elevator car, when the elevator stops at a position far away from the elevator door due to failure, the motor 7 can be started, after the motor 7 is started, the screw rod 8 rotates, since the lifting seats 6 are slidably connected with the guide blocks 10, when the screw rod 8 rotates, the lifting seats 6 linearly descend, when the lifting seats 6 descend, the driving blocks 11 at both ends are driven, since the end of the driving blocks 11 close to the lifting seats 6 is an inclined surface, the driving blocks 11 will move horizontally outward along the T-shaped grooves 3, until the end of the driving blocks 11 close to the lifting seats 6 abuts against the outer side surface of the lifting seats 6 and stops, so that the T-shaped blocks 4 are inserted into the limit mechanism of the preset clamping grooves on the elevator guide rail, moreover, since the driving blocks 11 abut against the outer side surface of the lifting seats 6 and the angles of the two are perpendicular, when the T-shaped blocks 4 are stressed, the T-shaped blocks 4 will not retreat towards the inner side of the T-shaped grooves 3; moreover, when the lifting seats 6 descend, the driving blocks 11 are driven outward, and the guide blocks 10 press the springs 13 in the guide grooves 12, and when the lifting seats 6 lift and retract, the springs 13 in the compressed state control the guide blocks 10 to rebound, so that the T-shaped blocks 4 quickly enter the T-shaped grooves 3.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, on the premise of not departing from the spirit and range of the utility model, the utility model will also have various changes and improvements, and these changes and improvements all fall into the range of the utility model claimed to be protected. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An elevator service car arresting device, characterized by: Comprising The housing (1) is provided with a transmission shell (2) in the middle of the top end, and a lifting mechanism is arranged inside the transmission shell (2); T-shaped grooves (3) are arranged at both ends of the housing (1), T-shaped blocks (4) are movably installed inside the T-shaped grooves (3), and limiting mechanisms are arranged at one end of the T-shaped blocks (4) close to the inside of the housing (1).

2. An elevator service car positioner as defined in claim 1, wherein: The lifting mechanism comprises a lifting groove (5) vertically arranged between the transmission shell (2) and the housing (1), a lifting seat (6) movably installed inside the lifting groove (5) and located at one end of the transmission shell (2), a motor (7) fixedly installed at the middle of the top end of the transmission shell (2), an output shaft of the motor (7) fixedly installed with a screw rod (8) through the transmission shell (2), and a threaded groove (9) threadedly connected with the screw rod (8) is arranged in the middle of the lifting seat (6).

3. An elevator service car position-limiting device according to claim 2, characterized in that: The inside upper end of the transmission shell (2) is further provided with guide blocks (10), and the upper end of the lifting seat (6) is slidably connected with the guide blocks (10).

4. An elevator service car positioner as set forth in claim 2, wherein: The limiting mechanism comprises a driving block (11), which is horizontally arranged at one end of the T-shaped block (4) close to the inside of the lifting groove (5), and the side of the driving block (11) close to the lifting groove (5) is provided with an inclined surface.

5. An elevator service car position-limiting device according to claim 4, characterized in that: The limiting mechanism further comprises a guide groove (12), which is arranged below the driving block (11) close to the housing (1), a spring (13) is arranged inside the guide groove (12) and away from one side of the lifting groove (5), and a movable block (14) fixedly connected with the spring (13) is arranged below the driving block (11) and close to one side of the lifting groove (5).

6. An elevator service car positioner as set forth in claim 4, wherein: A friction plate (15) is arranged at one end of the T-shaped block (4) away from the driving block (11).

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