CN220165528U - Grid ruler mechanism for elevator speed measurement - Google Patents

Abstract

The utility model discloses a grating ruler mechanism for elevator speed measurement, which comprises a grating ruler body, a reading assembly and an inductive switch, wherein a plurality of first mark information and second mark information are arranged on the grating ruler body at intervals along the length direction, and the first mark information and the second mark information are arranged in a staggered manner; the reading assembly is slidably arranged on the grating ruler body and comprises a sliding seat and a limiting rod, the grating ruler body is arranged between the sliding seat and the limiting rod in a penetrating mode, the sliding seat is provided with a reading head, and the reading head is used for identifying first mark information and second mark information; the inductive switch comprises a pressing rod, the pressing rod is rotatably arranged on the sliding seat and is provided with a first position and a second position; when the grid ruler body is tightened, the compression bar is located at the first position, and when the grid ruler body is disconnected, the compression bar is located at the second position. The grating ruler mechanism is additionally provided with an inductive switch to monitor the relative position relation between the reading assembly and the grating ruler body, so that safety accidents caused by overlarge running speed data errors are avoided.

Description

Grid ruler mechanism for elevator speed measurement

Technical Field

The utility model relates to the technical field of elevator safety, in particular to a grating ruler mechanism for elevator speed measurement.

Background

The magnetic grating ruler is a common elevator speed and position detection means, so that the reading accuracy of the grating ruler mechanism plays a vital role in the operation safety of an elevator. In actual operation, the magnetic grid ruler mechanism can displace, so that the operation speed and the detection result of the position of the elevator are affected, even the elevator cannot be braked correctly due to position or speed judgment errors, the elevator leveling error is overlarge, and potential safety hazards are brought to passengers in an elevator car. In addition, the rule body of the grid rule structure can also loose or even break the belt along with the time change, and the operation safety of the elevator is affected.

Therefore, there is a need to provide a grid ruler mechanism capable of guaranteeing the operation safety of an elevator.

Disclosure of Invention

In order to solve at least one of the technical problems, the utility model provides a grating ruler mechanism for elevator speed measurement, which adopts the following technical scheme:

the grating ruler mechanism for elevator speed measurement comprises a grating ruler body, a reading assembly and an inductive switch, wherein a plurality of first mark information and second mark information are arranged on the grating ruler body at intervals along the length direction, and the first mark information and the second mark information are arranged in a staggered manner; the reading assembly is slidably mounted on the grid ruler body, the reading assembly comprises a sliding seat and a limiting rod, the grid ruler body is arranged between the sliding seat and the limiting rod in a penetrating mode, the sliding seat is provided with a reading head, and the reading head is used for identifying the first marking information and the second marking information; the inductive switch comprises a pressing rod, the pressing rod is rotatably arranged on the sliding seat, and the pressing rod is provided with a first position and a second position; when the grid ruler body is tightened, the pressing rod is located at the first position, and when the grid ruler body is disconnected, the pressing rod is located at the second position.

In some embodiments of the present utility model, two of the limit rods are arranged on the sliding seat at intervals along the length direction of the grating ruler body.

In some embodiments of the present utility model, the stop lever has a first stop structure and a second stop structure, the first stop structure and the second stop structure are arranged at intervals along the width direction of the grid ruler body, and the distance between the first stop structure and the second stop structure is greater than the width of the grid ruler body.

In some embodiments of the utility model, the stop bar is provided with a rolling member in rolling contact with the grating blade, and the first and second stop formations are raised relative to the rolling member.

In some embodiments of the present utility model, the grid ruler mechanism further includes an adjusting assembly, the adjusting assembly includes a driving member and a transmission structure, the driving member is mounted on the sliding seat, the transmission structure is fixedly connected with the limiting rod, and the driving member can drive the transmission structure to reciprocate along the width direction of the grid ruler body.

In some embodiments of the present utility model, the driving member is configured as a driving motor, a gear is mounted at an output end of the driving motor, and the transmission structure is configured as a rack structure meshed with the gear.

In some embodiments of the present utility model, the adjusting assembly further includes a position detecting unit mounted to the reading assembly, the position detecting unit configured to detect movement of the grating blade relative to the reading assembly, the position detecting unit being electrically connected to the driving member.

In some embodiments of the utility model, the position detection unit includes an infrared sensor mounted to a side of the slide mount opposite the grid blade.

In some embodiments of the present utility model, the position detecting unit includes two pressure sensors, and the two pressure sensors are respectively mounted on the first limit structure and the second limit structure.

In some embodiments of the present utility model, two of the inductive switches are respectively installed at two ends of the sliding seat along the length direction of the grating ruler body.

The embodiment of the utility model has at least the following beneficial effects: the grating ruler mechanism is additionally provided with an inductive switch, the inductive switch is arranged on the reading assembly, and the inductive switch can monitor the relative position relationship between the reading assembly and the grating ruler body. When the grid ruler body is seriously loosened or broken, the inductive switch is switched from the first position to the second position, so that safety accidents such as elevator collision and the like caused by overlarge running speed data errors are avoided.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a grid scale mechanism;

fig. 2 is a schematic view of the usage state of the grating ruler mechanism.

Reference numerals: 210. a grid ruler body; 220. a reading assembly; 221. a sliding seat; 222. a limit rod; 2221. a first limit structure; 2222. a second limit structure; 223. a rolling member; 400. an adjustment assembly; 410. a driving member; 420. a transmission structure; 430. a position detection unit; 600. an inductive switch.

Detailed Description

Embodiments of the present utility model are described in detail below with reference to fig. 1-2, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that, if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used as directions or positional relationships based on the directions shown in the drawings, the directions are merely for convenience of description and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

When the existing elevator is used, the grid ruler mechanism is used for measuring the real-time running speed of the elevator, so that the reading accuracy of the grid ruler mechanism plays a vital role in running safety of the elevator. In actual operation, the grid ruler mechanism can displace in the elevator operation process, so that the detection result of the elevator operation speed is affected, and even the elevator is impacted due to the fact that the elevator cannot be braked in time. In addition, the rule body of the grid rule structure can also loose or even break the belt along with the time change, and the operation safety of the elevator is affected.

The utility model relates to a grating ruler mechanism for elevator speed measurement, which comprises a grating ruler body 210, a reading assembly 220 and an inductive switch 600, wherein the grating ruler body 210 is provided with a plurality of first mark information and second mark information at intervals along the length direction, and the first mark information and the second mark information are arranged in a staggered manner; the reading assembly 220 is slidably mounted on the grid ruler body 210, the reading assembly 220 comprises a sliding seat 221 and a limiting rod 222, the grid ruler body 210 is arranged between the sliding seat 221 and the limiting rod 222 in a penetrating mode, the sliding seat 221 is provided with a reading head, and the reading head is used for identifying first mark information and second mark information; the inductive switch 600 includes a pressing lever rotatably mounted on the sliding seat 221, the pressing lever having a first position and a second position; wherein, when the grid ruler body 210 is tightened, the compression bar is positioned at the first position, and when the grid ruler body 210 is disconnected, the compression bar is positioned at the second position. The grating ruler mechanism is additionally provided with the inductive switch 600, the inductive switch 600 is arranged on the reading assembly 220, and the inductive switch 600 can monitor the relative position relationship between the reading assembly 220 and the grating ruler body 210. When the grid ruler body 210 is seriously loosened or broken, the inductive switch 600 is switched from the first position to the second position, so that safety accidents such as elevator collision and the like caused by overlarge running speed data errors are avoided.

In this embodiment, the grating ruler mechanism is a magnetic grating ruler mechanism, the grating ruler body 210 is made of magnetic materials, the first marking information and the second marking information are a first magnetic pole and a second magnetic pole with opposite magnetism, the reading head moves along the grating ruler body 210, detects the first magnetic pole and the second magnetic pole, and then feeds back a signal to obtain the actual running speed of the elevator car. It will be appreciated that in other embodiments, the grating scale mechanism is configured as a grating scale mechanism or a ball grating scale mechanism, and variations in the reading form of the grating scale mechanism do not affect implementation of the present solution.

In some embodiments, two stop bars 222 are provided, and in combination with the drawings, the two stop bars 222 are disposed at intervals along the length of the grid blade 210 on the sliding seat 221. In the present embodiment, two limiting rods 222 are respectively disposed at two ends of the sliding seat 221 to further define the relative positional relationship between the reading assembly 220 and the grid ruler body 210, so as to ensure the reading accuracy of the grid ruler mechanism. It is understood that the number and installation positions of the limit rods 222 can be optionally adjusted according to the specification of the sliding seat 221 in the reading assembly 220.

In some embodiments, the stop lever 222 has a first stop structure 2221 and a second stop structure 2222, the first stop structure 2221 and the second stop structure 2222 are spaced apart along the width of the grid blade 210, and the distance between the first stop structure 2221 and the second stop structure 2222 is greater than the width of the grid blade 210. As can be appreciated when the grid blade 210 is moved in the width direction, the first or second stop structure 2221 or 2222 can abut the grid blade 210 to prevent further deflection of the grid blade 210. It is appreciated that in other embodiments, the first and second stop structures 2221 and 2222 are disposed directly on the sliding base 221 to limit movement of the grid blade 210 relative to the sliding base 221.

Further, the stopper 222 is provided with a rolling member 223, and the rolling member 223 is in rolling contact with the grating blade 210 to reduce friction between the grating blade 210 and the stopper 222. It will be appreciated that in some embodiments, the rolling elements 223 are configured as bearings, and the positioning structure is provided at both ends of the bearings to prevent the bearings from moving axially along the stop lever 222, and the bearings rotate relative to the stop lever 222 as the grid blade 210 moves up and down; in other embodiments, the rolling member 223 is configured as a cylindrical structure integral with the stop lever 222, and the cylindrical structure drives the stop lever 222 to rotate relative to the sliding seat 221 when the grid ruler blade 210 moves up and down. In this embodiment, the first limit structure 2221 and the second limit structure 2222 are configured as boss structures protruding with respect to the rolling member 223, and the two boss structures are respectively disposed at two ends of the rolling member 223.

In some embodiments, the grid ruler mechanism further comprises an adjusting assembly 400, the adjusting assembly 400 comprises a driving piece 410 and a transmission structure 420, the driving piece 410 is mounted on the sliding seat 221, the transmission structure 420 is fixedly connected with the limiting rod 222, and the driving piece 410 can drive the transmission structure 420 to reciprocate along the width direction of the grid ruler body 210. It will be appreciated that during actual use of the grid scale mechanism, the mounting arm of the grid scale mechanism may sag and tilt due to its own weight and gravity of the grid scale mechanism after long-term operation, and the grid scale body 210 is still kept in a vertical state, but moves in the width direction relative to the sliding seat 221. To ensure the accuracy of the grid ruler mechanism, the driving member 410 drives the transmission structure 420 to move along the width direction, and further drives the stop lever 222 to push the grid ruler body 210, so as to adjust the relative position between the grid ruler body 210 and the reading assembly 220.

Further, the driving member 410 is configured as a driving motor, a gear is mounted at an output end of the driving motor, and the transmission structure 420 is configured as a rack structure engaged with the gear. Referring to the drawings, a driving motor is installed at the upper end of the reading assembly 220, and an output shaft of the driving motor drives a gear to rotate, thereby driving a rack structure and two limit rods 222 to move along the width direction and pushing the grid ruler body 210. It will be appreciated that in other embodiments, the driving member 410 and the transmission structure 420 are provided therebetween in the form of a ball screw pair, a worm gear, or the like to drive the stop lever 222 to move in the width direction.

Further, the adjusting assembly 400 further includes a position detecting unit 430, wherein the position detecting unit 430 is mounted on the reading assembly 220, and in particular, the position detecting unit 430 is used for detecting the movement of the grid blade 210 relative to the reading assembly 220, and the position detecting unit 430 is electrically connected to the driving member 410. It will be appreciated that in some embodiments, the position detection unit 430 is capable of monitoring whether the grid blade 210 is moving in a width direction relative to the reading assembly 220; in other embodiments, the position detection unit 430 can further measure the displacement of the grating blade 210 and is linked to the driving member 410 to achieve self-adjustment.

In some of these embodiments, the position detection unit 430 includes an infrared sensor mounted to the side of the slide mount 221 opposite the grid blade 210. It will be appreciated that as the grating blade 210 moves in the width direction, the grating blade 210 obscures the infrared sensor, thereby enabling the infrared sensor to determine the change in the relative position between the grating blade 210 and the sliding seat 221. Referring to the drawings, a plurality of infrared sensors are provided, and the plurality of infrared sensors are symmetrically arranged at both sides of the grid ruler body 210 in two rows to monitor the displacement of the grid ruler body 210.

In other embodiments, the position detecting unit 430 includes at least two pressure sensors, where the two pressure sensors are respectively mounted on a side of the first limit structure 2221 near the grid blade 210 and a side of the second limit structure 2222 near the grid blade 210.

In some embodiments, two inductive switches 600 are provided, and in combination with the drawings, the two inductive switches 600 are respectively mounted at two ends of the sliding seat 221 along the length direction of the grid ruler body 210. Specifically, the inductive switch 600 is configured as a relay switch or other contact switch, and the signal transmission is achieved through the change of the position. It can be appreciated that the inductive switches 600 are respectively disposed at the upper and lower ends of the sliding seat 221, so that the sensitivity of the grid ruler mechanism to the belt breakage detection can be improved, and the inductive switches 600 are triggered in time to perform subsequent operations such as braking and stopping. Specifically, the inductive switch 600 further includes an elastic member disposed between the pressing lever and the sliding seat 221 to ensure that the pressing lever can rotate from the first position to the second position in time when the grid blade 210 is loosened or broken.

In some of these embodiments, the grid scale mechanism further includes a tensioning member that is coupled to the grid scale blade 210. Specifically, the tensioning member is provided in the form of a weight and is connected to the lower end of the grid blade 210 to maintain the tensioned state of the grid blade 210, thereby avoiding excessive errors in the grid blade mechanism.

It can be appreciated that the grid ruler mechanism further includes a control component electrically connected to the reading component 220 to receive a signal fed back by the reading head and process to obtain an actual running speed of the elevator car, and electrically connected to the adjusting component 400 to control the driving element 410 to drive the transmission structure 420 to move, and adjust the position of the grid ruler body 210 through the first limit structure 2221 and the second limit structure 2222. In some embodiments, the control component independently controls the reading component 220 and the adjusting component 400, and starts the adjusting component 400 to reset the grid ruler mechanism according to the feedback of the reading component 220; in other embodiments, the control assembly is electrically connected to a control system for elevator operation, and the grid ruler mechanism is adjusted according to parameters such as elevator operation conditions.

In the description of the present specification, if a description appears that makes reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A grating ruler mechanism for elevator speed measurement, comprising:

the grid ruler comprises a grid ruler body (210), wherein a plurality of first mark information and second mark information are arranged on the grid ruler body (210) at intervals along the length direction, and the first mark information and the second mark information are arranged in a staggered mode;

the reading assembly (220), the reading assembly (220) is slidably mounted on the grid ruler body (210), the reading assembly (220) comprises a sliding seat (221) and a limiting rod (222), the grid ruler body (210) is arranged between the sliding seat (221) and the limiting rod (222) in a penetrating mode, and the sliding seat (221) is provided with a reading head which is used for identifying the first marking information and the second marking information;

a sense switch (600), the sense switch (600) comprising a plunger rotatably mounted to the slide mount (221), the plunger having a first position and a second position;

wherein when the grid blade (210) is tightened, the plunger is in the first position and when the grid blade (210) is disconnected, the plunger is in the second position.

2. The grid ruler mechanism for elevator speed measurement according to claim 1, wherein: the two limiting rods (222) are arranged, and the two limiting rods (222) are arranged on the sliding seat (221) at intervals along the length direction of the grid ruler body (210).

3. Grid ruler mechanism for elevator speed measurement according to claim 1 or 2, characterized in that: the limiting rod (222) is provided with a first limiting structure (2221) and a second limiting structure (2222), the first limiting structure (2221) and the second limiting structure (2222) are arranged at intervals along the width direction of the grid ruler body (210), and the distance between the first limiting structure (2221) and the second limiting structure (2222) is larger than the width of the grid ruler body (210).

4. A grating ruler mechanism for elevator speed measurement according to claim 3, characterized in that: the limiting rod (222) is provided with a rolling piece (223), the rolling piece (223) is in rolling contact with the grid ruler body (210), and the first limiting structure (2221) and the second limiting structure (2222) are protruding relative to the rolling piece (223).

5. A grating ruler mechanism for elevator speed measurement according to claim 3, characterized in that: the grid ruler mechanism further comprises an adjusting assembly (400), the adjusting assembly (400) comprises a driving piece (410) and a transmission structure (420), the driving piece (410) is installed on the sliding seat (221), the transmission structure (420) is fixedly connected with the limiting rod (222), and the driving piece (410) can drive the transmission structure (420) to reciprocate along the width direction of the grid ruler body (210).

6. The grid ruler mechanism for elevator speed measurement according to claim 5, wherein: the driving piece (410) is arranged as a driving motor, a gear is arranged at the output end of the driving motor, and the transmission structure (420) is arranged as a rack structure meshed with the gear.

7. The grid ruler mechanism for elevator speed measurement according to claim 5, wherein: the adjusting assembly (400) further comprises a position detecting unit (430), the position detecting unit (430) is mounted on the reading assembly (220), the position detecting unit (430) is used for detecting movement of the grid ruler body (210) relative to the reading assembly (220), and the position detecting unit (430) is electrically connected with the driving piece (410).

8. The grid ruler mechanism for elevator speed measurement according to claim 7, wherein: the position detection unit (430) includes an infrared sensor mounted to a side of the slide holder (221) opposite to the grid blade (210).

9. Grid ruler mechanism for elevator speed measurement according to claim 7 or 8, characterized in that: the position detection unit (430) comprises two pressure sensors, and the two pressure sensors are respectively installed on the first limit structure (2221) and the second limit structure (2222).

10. The grid ruler mechanism for elevator speed measurement according to claim 1, wherein: the two inductive switches (600) are arranged, and the two inductive switches (600) are respectively arranged at two ends of the sliding seat (221) along the length direction of the grid ruler body (210).