CN213622789U

CN213622789U - Elevator weighing device

Info

Publication number: CN213622789U
Application number: CN202022104313.5U
Authority: CN
Inventors: 葛志煌; 黄丹燕; 唐其伟
Original assignee: Hitachi Building Technology Guangzhou Co Ltd
Current assignee: Hitachi Building Technology Guangzhou Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-07-06
Anticipated expiration: 2030-09-23

Abstract

The utility model relates to an elevator weighing device, include: a first rope hitch plate; the second rope hitch plate is arranged at an interval with the first rope hitch plate; the rope head assembly comprises a rope head elastic piece and a rope head pull rod, the rope head elastic piece is elastically supported between the first rope hitch plate and the second rope hitch plate, and the rope head pull rod is used for connecting the second rope hitch plate with a traction rope of the elevator car; and the weighing component comprises a weighing rope, a tightening piece, a triggering piece and a weighing sensing piece, wherein the weighing rope is connected between the first rope hitch plate and the second rope hitch plate in a turn-back mode, the weighing rope can make tightening change under the action of the tightening piece to amplify the deformation amount of the rope head elastic piece, the triggering piece is connected with the weighing rope and can generate displacement along with tightening of the weighing rope, and the weighing sensing piece is used for being matched with the triggering piece to weigh and detect. The elevator weighing device of the scheme is simple in structure, low in cost, convenient to debug and maintain and capable of achieving accurate weighing of the elevator.

Description

Elevator weighing device

Technical Field

The utility model relates to an elevator technical field that weighs especially relates to an elevator weighing device.

Background

In the loading and running processes of the elevator, the actual load of the car needs to be fed back to a control system of the elevator in time, so that the control system can give an early warning to the loading condition of the car in time and perform safety protection operation, and the safe running of the elevator is effectively guaranteed. At present, the mainstream technical scheme of elevator weighing comprises car weighing and machine room rope end weighing. Machine room fag end is weighed and is generally adopted pressure sensor and controller to cooperate, because of pressure sensor need press in fag end board below, has the debugging of weighing and the maintenance scheduling problem of difficulty. The rope of an elevator is usually provided with a rope spring, but the compression amount of the spring is very small, and the elevator cannot be accurately weighed, so that the spring is not widely applied to elevator weighing.

SUMMERY OF THE UTILITY MODEL

Therefore, the elevator weighing device needs to be provided for solving the problems, the elevator weighing device can accurately weigh by amplifying the compression amount of the rope end spring, and the elevator weighing device is simple in structure, low in cost, and convenient to debug and maintain.

An elevator weighing apparatus comprising:

a first rope hitch plate;

the second rope hitch plate is arranged at an interval with the first rope hitch plate;

the rope head assembly comprises a rope head elastic piece and a rope head pull rod, the rope head elastic piece is elastically supported between the first rope hitch plate and the second rope hitch plate, and the rope head pull rod is used for connecting the second rope hitch plate with a traction rope of an elevator car; and

the subassembly of weighing, including weighing rope, receipts piece, trigger piece and the response piece of weighing, the rope of weighing turn back connect in first rope hitch plate with between the second rope hitch plate, the rope of weighing can make under the effect of receipts piece and tighten up the change, with right the deformation volume of rope end elastic component enlargies, trigger piece with the rope of weighing is connected and can be followed the rope of weighing tightens up and produces the displacement, the response piece of weighing be used for with the cooperation of trigger piece is in order to weigh the detection.

The first rope hitch plate of the elevator weighing device is fixed, the second rope hitch plate is connected with the traction rope of the elevator car through the rope hitch pull rod, and when the load of the elevator car changes, the second rope hitch plate can be driven to move relative to the first rope hitch plate. The interval between second rope hitch plate and the first rope hitch plate changes, make rope hitch elastic component can produce minimumly, stable deformation volume, and simultaneously, the rope of weighing continuously makes under the effect of tightening up the piece and tightens up the change, because the rope of weighing is the design of turning back and forth, can make the interval change between second rope hitch plate and the first rope hitch plate carry out the accuracy and enlarge, also accurately enlarge the deformation volume of rope hitch elastic component, finally show that the trigger piece can produce certain displacement along with tightening up of the rope of weighing, the trigger piece removes and can trigger the response piece of weighing, thereby detect the detection of weighing of elevator through the displacement change of weighing response piece to the trigger piece. The elevator weighing device has simple structure and lower cost, and can carry out weighing debugging and maintenance in the machine room, so that the debugging and maintenance operation is simpler and more convenient; the rope of weighing through the design of turning back round can carry out accurate effectual amplification to the deformation volume of fag end elastic component to can realize the accurate of elevator and weigh.

In one embodiment, the second rope hitch plates are arranged above the first rope hitch plate oppositely and at intervals, the first rope hitch plate and the second rope hitch plate are both provided with anti-rope pieces, the anti-rope pieces on the upper side and the lower side are arranged in a staggered mode along the horizontal direction, one end of the weighing rope is connected with the first rope hitch plate or the second rope hitch plate, and the other end of the weighing rope is connected with the trigger piece after being turned back to pass through the anti-rope pieces.

In one embodiment, the first rope hitch plate and the second rope hitch plate are provided with at least two reverse ropes.

In one embodiment, the backswing is an annular body through which the weighing rope can pass.

In one embodiment, the backstay member is a grooved pulley around which the weighing rope can be passed.

In one embodiment, a rope pull rod is connected between the weighing rope and the trigger piece, a limiting part is arranged on the rope pull rod, the tightening piece is a tightening spring sleeved on the rope pull rod, one end of the tightening spring is elastically abutted to the first rope hitch plate, and the other end of the tightening spring is elastically abutted to the limiting part.

In one embodiment, the rope end pull rod penetrates through the first rope end plate and the second rope end plate, the rope end assembly further comprises a locking piece in locking fit with the rope end pull rod, and the locking piece is limited and abutted to the top surface of the second rope end plate.

In one embodiment, the rope end elastic element is a compression spring sleeved on the periphery of the rope end pull rod.

In one embodiment, the first rope hitch plate is provided with a mounting rack for mounting the weighing sensing piece, and the weighing sensing piece is positioned below the trigger piece.

In one embodiment, the load sensing member is an eddy current sensor or a microswitch.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an elevator weighing device according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of an elevator weighing apparatus according to a second embodiment of the present invention.

10. A first rope hitch plate; 20. a second rope hitch plate; 31. a rope end elastic member; 32. a rope end pull rod; 33. a locking member; 41. weighing the rope; 42. a tightener; 43. a trigger; 44. a weighing sensing piece; 44a, an eddy current sensor; 44b, a microswitch; 45. a rope tension rod; 46. a limiting part; 50. a reverse rope member; 60. and (7) mounting frames.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, an elevator weighing apparatus according to two embodiments of the present application is shown. An elevator weighing device that this application embodiment provided includes: a first rope hitch plate 10, a second rope hitch plate 20, a rope head assembly and a weighing assembly. The second rope hitch plate 20 is arranged at a distance from the first rope hitch plate 10 and can move relative to the first rope hitch plate 10; the rope head assembly comprises a rope head elastic part 31 and a rope head pull rod 32, the rope head elastic part 31 is elastically supported between the first rope hitch plate 10 and the second rope hitch plate 20, and the rope head pull rod 32 is used for connecting the second rope hitch plate 20 with an elevator car traction rope; the weighing assembly comprises a weighing rope 41, a tightening piece 42, a triggering piece 43 and a weighing sensing piece 44, wherein the weighing rope 41 is connected between the first rope hitch plate 10 and the second rope hitch plate 20 in a folding mode, the weighing rope 41 can be tightened and changed under the action of the tightening piece 42 to amplify the deformation quantity of the rope head elastic piece 31, the triggering piece 43 is connected with the weighing rope 41 and can generate displacement along with the tightening of the weighing rope 41, and the weighing sensing piece 44 is used for being matched with the triggering piece 43 to carry out weighing detection.

Specifically, the first rope hitch plate 10 of the elevator weighing device is fixed, the second rope hitch plate 20 is connected with a traction rope of an elevator car through the rope hitch pull rod 32, and when the load of the elevator car changes, the second rope hitch plate 20 can be driven to move relative to the first rope hitch plate 10. The interval between second rope hitch plate 20 and first rope hitch plate 10 changes for rope end elastic component 31 can produce the small, stable deformation volume, and simultaneously, the rope 41 of weighing continuously makes the change of tightening up under the effect of tightening up the piece 42, because the rope 41 of weighing is the design of turning back and forth, can make the interval change between second rope hitch plate 20 and the first rope hitch plate 10 carry out accurate amplification, also accurately amplify the deformation volume of rope end elastic component 31, finally show that trigger 43 can produce certain displacement along with the tightening up of rope 41 of weighing, trigger 43 removes and can trigger weighing sensing element 44, thereby detect the displacement change of trigger 43 through weighing sensing element 44 and can realize weighing detection of elevator. The elevator weighing device has simple structure and lower cost, and can carry out weighing debugging and maintenance in the machine room, so that the debugging and maintenance operation is simpler and more convenient; the amount of deformation of the rope end elastic member 31 can be accurately and effectively amplified by the weighing rope 41 which is designed to be turned back and forth, so that accurate weighing of the elevator can be realized.

Further, as shown in fig. 1, in this embodiment, the second rope hitch plate 20 is disposed above the first rope hitch plate 10 at an interval, the first rope hitch plate 10 and the second rope hitch plate 20 are both provided with anti-rope members 50, the anti-rope members 50 located at the upper side and the lower side are staggered in the horizontal direction, one end of the weighing rope 41 is connected with the first rope hitch plate 10 or the second rope hitch plate 20, and the other end of the weighing rope turns back to pass through each anti-rope member 50 and then is connected with the trigger member 43. Specifically, in this embodiment, one end of the weighing rope 41 is connected and fixed to the first rope hitch plate 10, and the other end of the weighing rope 41 is folded back upward and passes through the reverse rope 50 on the second rope hitch plate 20, and then is folded back downward and passes through the reverse rope 50 on the first rope hitch plate 10, so that the weighing rope finally naturally hangs down after being folded back and forth for several times and is connected to the trigger 43. When the second rope hitch plate 20 moves downward relative to the first rope hitch plate 10, the weighing rope 41 is tightened by the tightening member 42, and accordingly, the end of the weighing rope 41 connected with the trigger 43 moves downward, so that the trigger 43 is driven to displace downward. When the second rope hitch plate 20 moves upward relative to the first rope hitch plate 10, the end of the weighing rope 41 connected with the trigger 43 moves upward, thereby bringing the trigger 43 into upward displacement. The adjustment of the trigger distance between the trigger member 43 and the weighing sensing member 44 can be realized by the up-and-down movement of the trigger member, and the weighing sensing member 44 can send out a corresponding detection signal by sensing the change of the trigger distance.

The specific number of the reverse rope pieces 50 on the first rope hitch plate 10 and the reverse rope pieces 50 on the second rope hitch plate 20 can be set according to actual requirements, and the weighing rope 41 can be turned back and forth. Optionally, in this embodiment, each of the first rope hitch plate 10 and the second rope hitch plate 20 is provided with at least two of the reverse ropes 50. So, can enlarge the deformation volume of fag end elastic component 31 more accurately to further promote the accuracy of weighing. For example, in this embodiment, four anti-rope pieces 50 are uniformly arranged at intervals in the middle of one surface of the first rope hitch plate 10 facing the second rope hitch plate 20, five anti-rope pieces 50 are uniformly arranged at intervals in the middle of one surface of the second rope hitch plate 20 facing the first rope hitch plate 10, and the anti-rope pieces 50 on the upper and lower sides are staggered in the horizontal direction.

The run of the weighing rope 41 can be guided back by the backstay 50 without affecting the expansion and contraction of the weighing rope 41. There are various specific structures of the backswing member 50, for example, in the present embodiment, the backswing member 50 is a ring body through which the weighing cord 41 can pass, and the structure is simple, so that the weighing cord 41 can pass through the ring body, and it can be ensured that the weighing cord 41 does not slip off the backswing member 50. Of course, in other embodiments, the backstay 50 can also be designed as a grooved pulley around which the weighing cables 41 can be wound. For example, a plurality of first grooved pulleys may be provided on the first rope hitch plate 10, a plurality of second grooved pulleys may be provided on the second rope hitch plate 20, and the reverse rope 50 may be sequentially turned back around the respective first grooved pulleys and second grooved pulleys, so that the change in expansion and contraction of the weighing rope 41 may be smoother by the grooved pulleys.

Further, in this embodiment, a rope pull rod 45 is connected between the weighing rope 41 and the trigger 43, a limiting portion 46 is disposed on the rope pull rod 45, the tightening member 42 is a tightening spring sleeved on the rope pull rod 45, one end of the tightening spring elastically abuts against the first rope hitch plate 10, and the other end of the tightening spring elastically abuts against the limiting portion 46. Specifically, the tightening element 42 (i.e., the tightening spring) is always in a compressed state, and when the second rope hitch plate 20 moves downward relative to the first rope hitch plate 10, the weighing rope 41 is loosened, and at this time, the tightening element 42 releases elastic potential energy to generate deformation, so that the weighing rope 41 can continuously make tightening changes, and one end of the tightening element 42 abuts against the limiting portion 46 on the rope pull rod 45, so that the rope pull rod 45 continuously moves downward, and then the triggering element 43 can be driven to move. Of course, in other embodiments, the tightening element 42 may be a rubber-elastic column or other deformable mechanical structure.

Further, in this embodiment, the rope end pull rod 32 passes through the first rope end plate 10 and the second rope end plate 20, the rope end assembly further includes a locking member 33 in locking fit with the rope end pull rod 32, and the locking member 33 is limited and abutted to the top surface of the second rope end plate 20. Specifically, the top end of the rope end pull rod 32 forms a limit fit with the second rope hitch plate 20 through the limiting part 46, the bottom end of the rope end pull rod 32 can be connected with a traction rope of the elevator car after passing through the first rope hitch plate 10, and the rope end elastic member 31 is elastically supported between the first rope hitch plate 10 and the second rope hitch plate 20. The elevator car can move the second rope hitch plate 20 relative to the first rope hitch plate 10 by applying a pulling force to the rope hitch bar 32, thereby deforming the rope hitch elastic member 31.

Optionally, in this embodiment, the rope end elastic member 31 is a compression spring sleeved on the periphery of the rope end pull rod 32. In this way, the acting force applied by the rope end pull rod 32 to the second rope hitch plate 20 is on the same straight line with the rope end elastic part 31, so that the deformation of the rope end elastic part 31 is more stable, and the rope end elastic part 31 adopts a compression spring, so that the compression amount is stable and the linearity is high, and the accuracy of a weighing result can be further improved; in addition, the compression spring has strong fatigue resistance, can effectively reduce maintenance times and prolong the service life. Alternatively, the locking member 33 may be a lock nut, and a screw is used at an end of the string end pulling rod 32 that is engaged with the lock nut, so that the initial compression amount of the string end elastic member 31 can be adjusted by screwing the lock nut. In addition, in this embodiment, a spring seat is further disposed on the first rope hitch plate 10, and the bottom end of the rope end elastic member 31 is connected to the spring seat to ensure the installation stability of the rope end elastic member 31.

Optionally, a guiding structure may be further disposed between the first rope hitch plate 10 and the second rope hitch plate 20, and the guiding structure guides the movement of the second rope hitch plate 20, so as to further improve the deformation stability of the rope hitch elastic member 31, and further improve the weighing accuracy. The guide structure may be implemented in various forms, for example, the guide structure may include a guide bar disposed on the first rope hitch plate 10 and a guide sleeve disposed on the second rope hitch plate 20, one end of the guide bar is connected to the first rope hitch plate 10, and the other end of the guide bar extends toward the second rope hitch plate 20 and is slidably fitted with the guide sleeve.

Further, in this embodiment, the first rope hitch plate 10 is provided with a mounting bracket 60 for mounting the weight sensing member 44, and the weight sensing member 44 is located below the trigger member 43. A stable mounting of the load cell 44 is achieved by the mounting bracket 60. For example, in the present embodiment, the mounting bracket 60 has a substantially L-shaped structure, the mounting bracket 60 includes a vertically extending hanger and a bracket extending horizontally from the bottom of the hanger, the top of the hanger is connected to the first rope hitch plate 10, and the hanger is connected to the first rope hitch plate 10 by, but not limited to, welding, fastening, and the like. The bracket is arranged below the first rope hitch plate 10 at intervals, the weighing sensing piece 44 is arranged on the bracket, and the trigger piece 43 is arranged above the weighing sensing piece 44 at intervals. In this way, the trigger 43 can be accurately detected by the weight sensor 44 when it is displaced in a telescopic manner.

On the basis of the above embodiments, non-contact weighing detection may be adopted between the weighing sensing member 44 and the triggering member 43, or contact weighing detection may be adopted, and accordingly, the specific form of the weighing sensing member 44 may be various. For example, as shown in fig. 1, the load sensing member 44 in the first embodiment of the present application is an eddy current sensor 44 a. Accordingly, the trigger 43 is a metallic conductor that mates with the eddy current sensor 44 a. The eddy current sensor 44a can accurately measure the static and dynamic relative displacement changes between the trigger 43 and the probe end surface by the principle of the eddy current effect. The sensor has the characteristics of good long-term working reliability, high sensitivity, strong anti-interference capability, non-contact measurement, high response speed and no influence of media such as oil, water and the like. For another example, as shown in fig. 2, in the second embodiment of the present application, the load sensing member 44 is a microswitch 44 b. The trigger piece 43 generates displacement change, and then the micro switch 44b can be triggered to act, so that weighing detection is realized. Of course, in other embodiments, other types of load sensing elements 44 may be used, including but not limited to linear displacement sensors, pressure sensors, etc., and will not be described in detail herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. An elevator weighing device, comprising:

a first rope hitch plate;

2. The elevator weighing device according to claim 1, wherein the second rope hitch plate is disposed above the first rope hitch plate in an opposite and spaced manner, the first rope hitch plate and the second rope hitch plate are both provided with anti-rope members, the anti-rope members on the upper side and the lower side are arranged in a staggered manner in the horizontal direction, one end of the weighing rope is connected with the first rope hitch plate or the second rope hitch plate, and the other end of the weighing rope is connected with the trigger member after being folded back to pass through each anti-rope member.

3. The elevator weighing apparatus of claim 2, wherein the first rope hitch plate and the second rope hitch plate are each provided with at least two of the anti-rope pieces.

4. The elevator weighing apparatus of claim 2, wherein the roping is an annulus through which the weighing rope can pass.

5. The elevator weighing apparatus of claim 2, wherein the roping is a grooved pulley around which the weighing rope can be passed.

6. The elevator weighing device of claim 2, wherein a rope tension rod is connected between the weighing rope and the trigger member, a limiting portion is disposed on the rope tension rod, the tightening member is a tightening spring sleeved on the rope tension rod, one end of the tightening spring is elastically abutted against the first rope hitch plate, and the other end of the tightening spring is elastically abutted against the limiting portion.

7. The elevator weighing device of claim 2, wherein the rope hitch is passed through the first rope hitch plate and the second rope hitch plate, the rope hitch further comprising a locking member that is a locking fit with the rope hitch, the locking member being retained against a top surface of the second rope hitch plate.

8. The elevator weighing apparatus of claim 7, wherein the rope end elastic member is a compression spring sleeved on the periphery of the rope end pull rod.

9. The elevator weighing apparatus of claim 2, wherein the first rope hitch plate is provided with a mounting bracket for mounting the weight sensing member, the weight sensing member being located below the triggering member.

10. An elevator weighing apparatus as defined in any one of claims 1 to 9, wherein the load sensing member is an eddy current sensor or a microswitch.