Elevator door opening force tester

Abstract

The present invention relates to an elevator door opening force tester, which belongs to the field of elevator detection, and comprises a base, a double crank connecting rod mechanism is arranged on the base, guide rails are arranged on the bases on both sides of the double crank connecting rod mechanism, sliders are slidably connected on the guide rails, the double crank connecting rod mechanism connects the two sliders through a force sensor, and door pull hooks are arranged on the adjacent sides of the two sliders, and the two door pull hooks overlap each other when they are close to each other. The present invention provides a special tool for testing the door opening force of an elevator car door, which improves the test accuracy, improves the efficiency, and reduces manpower and working time.

Description

Technical Field

[0001] The invention belongs to the field of elevator detection and relates to an elevator door opening force tester. Background Art

[0002] According to the requirements for elevator car doors in the elevator manufacturing and installation safety specifications, if the elevator stops in the unlocking area for any reason, the car door and landing door should be manually opened with a force not exceeding 300N at the following positions:

[0003] 1. At the floor where the car is located, unlock the door with a triangular key or through the car door;

[0004] 2. Inside the car.

[0005] In order to restrict people in the car from opening the car door, measures should be provided:

[0006] 1. When the car is running, the force to open the car door should be greater than 50N;

[0007] 2. Apply a force of 1000N to the door opening restriction device, and the car door cannot open more than 50mm.

[0008] During elevator inspection and testing, in order to quantitatively determine whether the elevator car door meets the standard requirements, the relevant force parameters required by the standard clauses must be accurately measured. Such special instruments are lacking in the prior art. Summary of the invention

[0009] In view of this, an object of the present invention is to provide an elevator door opening force tester.

[0010] In order to achieve the above object, the present invention provides the following technical solutions:

[0011] An elevator door opening force tester comprises a base, a double crank connecting rod mechanism is arranged on the base, guide rails are arranged on the bases on both sides of the double crank connecting rod mechanism, sliders are slidably connected to the guide rails, the double crank connecting rod mechanism connects the two sliders through a force sensor, door pulling hooks are arranged on the adjacent sides of the two sliders, and the two door pulling hooks overlap each other when close to each other.

[0012] Furthermore, the base is rectangular, with a through hole for connecting a double crank connecting rod mechanism in the center, hollows are provided on both sides of the through hole in the long side direction of the base, slide rails are provided in the hollows, and the slider slides in the slide rails through the guide grooves.

[0013] Furthermore, the double crank connecting rod mechanism includes a rotating shaft arranged in the through hole, a connecting rod connected to the rotating shaft, the center of the connecting rod is fixedly connected to the rotating shaft, one end of the crank is hinged at both ends of the connecting rod, the other end of the crank is hinged to the force sensor, the force sensor is fixedly connected to the slider, and when the crank rotates, the two sliders move linearly in opposite directions in the same plane and along the same axis.

[0014] Furthermore, one of the two door-pulling hooks is in a frame shape and the other is in a square shape. When the two sliders are relatively close to each other and run to the extreme positions, the frame-shaped door-pulling hook and the square-shaped door-pulling hook overlap with each other.

[0015] Furthermore, a baffle is provided on the slider, one end of the force sensor is connected to the baffle, and the other end is hinged to the crank.

[0016] Furthermore, it also includes a protective cover, which is arranged on the base and covers the double crank connection mechanism.

[0017] The beneficial effect of the present invention is that when the elevator car door is in a closed state, two door-pulling hooks are inserted, and the crank is rotated to drive the two sliders to move away from each other. The door-pulling hooks on the slider realize the door opening action, and the force sensor on the slider records the door opening force. The door opening force tester tests the left and right door leaves of the elevator car door separately, and there are two door opening force data tested. The judgment principle of the test result is that the maximum door opening force is the larger one between the two, and the minimum door opening force is the smallest one between the two. The present invention provides a special tool for testing the door opening force of the elevator car door, which improves the test accuracy, improves the efficiency, and reduces manpower and working time.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the elevator door opening force tester of the present invention;

[0021] Figure 2 (a) is a front view of the elevator door opening force tester of the present invention, Figure 2 (b) is a front view of the slider approaching the structure; Figure (c) is a front view of the slider away from the structure;

[0022] Figure 3 (a) is a top view of the slider approaching the structure; Figure 3 (b) is a top view of the slider moving away from the structure;

[0023] Figure 4 It is a side view of the elevator door opening force tester of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the elevator door opening force tester of the present invention;

[0025] Figure 6 It is a schematic diagram of a double crank connecting rod mechanism;

[0026] Figure 7 It is a schematic diagram of a slider;

[0027] Figure 8 This is a schematic diagram of the door hook;

[0028] Fig. 9 Schematic diagram of the slider force analysis.

[0029] Reference numerals: base 1 , double crank connecting rod mechanism 2 , rotating shaft 21 , connecting rod 22 , crank 23 , force sensor 3 , slider 4 , door hook 5 . DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] like Figure 1-8 As shown, an elevator door opening force tester includes a base 1, a double crank connecting rod mechanism 2 is provided on the base 1, guide rails are provided on the bases on both sides of the double crank connecting rod mechanism 2, sliders 4 are slidably connected to the guide rails, the double crank connecting rod mechanism 2 is connected to the two sliders 4 through a force sensor 3, and door pull hooks 5 are provided on the adjacent sides of the two sliders 4, and the two door pull hooks 5 overlap each other when they are close to each other.

[0034] Optionally, the base 1 is rectangular, with a through hole in the center for connecting the double crank connecting rod mechanism 2, hollows are provided on both sides of the through hole in the long side direction of the base 1, and slide rails are provided in the hollows, and the slider 4 slides in the slide rails through the guide groove.

[0035] Optionally, the double crank connecting rod mechanism 2 includes a rotating shaft 21 arranged in a through hole, a connecting rod 22 connected to the rotating shaft 21, the center of the connecting rod 22 is fixedly connected to the rotating shaft 21, one end of a crank 23 is hinged at both ends of the connecting rod 22, the other end of the crank 23 is hinged to the force sensor 3, the force sensor 3 is fixedly connected to the slider 4, and when the crank 23 rotates, the two sliders 4 make linear motion in opposite directions in the same plane and along the same axis.

[0036] Optionally, one of the two door-pulling hooks 5 is in a square shape, and the other is in a square shape. When the two sliding blocks 4 are relatively close to each other and run to the extreme position, the square door-pulling hook 5 and the square door-pulling hook 5 overlap each other.

[0037] Optionally, a baffle is provided on the slider 4 , one end of the force sensor 3 is connected to the baffle, and the other end is hinged to the crank 23 .

[0038] Optionally, a protective cover is further included, which is arranged on the base 1 to cover the double crank connection mechanism 2 .

[0039] In this embodiment, the elevator door opening force tester uses a double crank connecting rod mechanism 2 to drive two sliders 4 to make linear motion. The hinges between the two sliders 2 and the crank 23 are both provided with force sensors 3. The two sliders 4 are both provided with guide grooves to cooperate with the guide rails on the base 1. When the crank 23 rotates, the two sliders 4 make linear motions in the same plane and along the same axis in opposite directions. A door pull hook 5 is respectively installed and fixed on the two sliders 4, one of which is designed as a square door pull hook and the other is designed as a physical door pull hook. When the two sliders 4 are relatively close to each other and run to the limit position, the square door pull hook 5 and the physical door pull hook 5 overlap each other to ensure that the thickness of the two door pull hooks 5 after overlapping can be smoothly inserted into the gap between the two elevator car doors when the elevator car door is in the closed state. When the crank 3 is rotated to drive the two sliders 4 to move relatively away from each other, the door pull hook 5 on the slider 4 can realize the door opening action, and at this time, the force sensor 3 on the slider 4 can record the door opening force.

[0040] Elevator door opening force tester force analysis Fig. 9 As shown, F1 represents the resistance of the car door to the slider when opening the door (i.e., the door opening force), which is obtained through force sensor testing; F2 represents the support reaction force of the guide rail on the slider; F3 represents the thrust of the connecting rod on the slider; φ represents the angle between the connecting rod and the movement direction of the slider, as shown Fig. 9 As shown: the size of F2 and F3 depends on the door opening force F1 and the angle φ between the connecting rod and the movement direction of the slider.

[0041] The door opening force tester tests the left and right door leaves of the elevator car door separately. There are two door opening force data tested. The principle for judging the test results is that the maximum door opening force takes the larger of the two, and the minimum door opening force takes the smaller of the two.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An elevator door opening force tester, characterized in that: The invention comprises a base, a double crank connecting rod mechanism is arranged on the base, guide rails are arranged on the bases on both sides of the double crank connecting rod mechanism, sliders are slidably connected to the guide rails, the double crank connecting rod mechanism connects the two sliders through a force sensor, door-pulling hooks are arranged on the adjacent sides of the two sliders, and the two door-pulling hooks overlap each other when they are close to each other; the base is rectangular, a through hole for connecting the double crank connecting rod mechanism is arranged in the center, hollows are arranged on both sides of the through hole in the long side direction of the base, slide rails are arranged in the hollows, and the sliders slide in the slide rails through guide grooves; The double crank connecting rod mechanism includes a rotating shaft arranged in a through hole, a connecting rod connected to the rotating shaft, the center of the connecting rod is fixedly connected to the rotating shaft, one end of the crank is hinged at both ends of the connecting rod, the other end of the crank is hinged to a force sensor, and the force sensor is fixedly connected to a slider. When the crank rotates, the two sliders move linearly in opposite directions in the same plane and along the same axis. One of the two door puller hooks is square and the other is square. When the two sliders are relatively close to each other and run to the extreme position, the square door puller hook and the square door puller hook overlap with each other.

2. The elevator door opening force tester according to claim 1, characterized in that: The slider is provided with a baffle, one end of the force sensor is connected to the baffle, and the other end is hinged to the crank.

3. The elevator door opening force tester according to claim 1, characterized in that: The utility model also comprises a protection cover, which is arranged on the base and covers the double crank connection mechanism.

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