Weight real-time load monitoring device applied to freight elevator

Abstract

A weight real-time load monitoring device applied to a freight elevator comprises a weighing pressing plate, a weighing unit and a weighing base, the weighing pressing plate is located above the weighing base, and the weighing unit comprises at least one weighing sensor and a main control module in communication connection with the weighing sensor. The weighing sensor is located between the weighing pressing plate and the weighing base, the upper end of the weighing sensor is fixedly connected with the weighing pressing plate, and the lower end of the weighing sensor is fixedly connected with the weighing base; and the main control module is in communication connection with a display. When the rope head assembly is stressed to promote the weighing pressing plate to apply pressure to the weighing sensors, the main control module converts monitoring data of all the weighing sensors into weight values and displays the weight values on the display in the lift car, so that a cargo transporting worker can quickly know the weight of cargoes, the cargo transporting worker can quickly increase or decrease the cargoes in the lift car, and the working efficiency is improved. Therefore, the load operation requirement of the cargo elevator is met, the cargo conveying efficiency is improved, and the use benefits of the cargo elevator are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a real-time weight load monitoring device applied to a freight elevator. Background Art

[0002] To prevent freight elevators from being overloaded, existing freight elevators are typically equipped with load monitoring devices for real-time monitoring. For example, the elevator weighing device disclosed in Patent No. CN201821588218.3 transmits changes in the car weight to a rope rod. The upper end of the rope rod presses down on a rope spring, which transmits the pressure through the upper rope plate to a pressure sensor, which measures the corresponding pressure. The device disclosed in this technical solution can more accurately detect the car load, prevent elevator overload, and ensure safe elevator operation.

[0003] However, the load monitoring device disclosed in this technical solution usually serves as a weight limit alarm for the freight elevator and cannot display the cargo weight in real time, resulting in the following conditions during the operation of the freight elevator:

[0004] First, when the freight elevator is overloaded, it is difficult for the freight workers to accurately judge the amount of overload, which makes it difficult for them to quickly reduce the corresponding weight of the goods to meet the freight elevator's carrying requirements, affecting the efficiency of freight transportation;

[0005] Second, when the freight elevator is not overloaded, it is difficult for freight workers to judge how much freight the freight elevator can carry. Freight workers can only try to put the goods into the freight elevator car to test the load condition of the freight elevator, which affects the efficiency of transporting goods.

[0006] Therefore, constructing a load monitoring device that can display the weight of cargo in real time is an urgent problem to be solved in this field. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the utility model provides a real-time weight load monitoring device for a freight elevator.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] A real-time weight load monitoring device for a freight elevator comprises a weighing plate, a weighing unit and a weighing base, wherein the weighing plate is located above the weighing base, a plurality of rope end assemblies are provided on the weighing plate, and a rope end avoidance space for avoiding the rope end assemblies is provided on the weighing base, the upper portion of the rope end assembly is connected to the weighing plate, and the lower portion extends into the rope end avoidance space; the weighing unit comprises at least one weighing sensor and a main control module communicatively connected to the weighing sensor, the weighing sensor is located between the weighing plate and the weighing base, the upper end of the weighing sensor is fixedly connected to the weighing plate, and the lower end is fixedly connected to the weighing base; the main control module is communicatively connected to a display for displaying the weight value monitored by the weighing unit in real time in the freight elevator car.

[0010] In the present invention, the weighing base includes two longitudinal seats and support seats at the left and right ends respectively overlapped and fixed on the top of the longitudinal seats. The two longitudinal seats and the support seats enclose the rope head avoidance space.

[0011] In the present invention, the longitudinal seat has a support groove, which is located on the side of the longitudinal seat facing away from the other longitudinal seat. A support rib is provided in the support groove, and the support rib is fixedly connected to the longitudinal seat.

[0012] In the present invention, the upper end of the support seat has a horizontal groove, the weighing plate is located above the horizontal groove, the weighing plate and the horizontal groove form a weighing protection space, and the weighing sensor is located in the weighing protection space.

[0013] In the present invention, the weighing base further comprises a reinforcing plate located in the horizontal groove, the reinforcing plate is fixedly connected to the supporting seat and forms a transverse seat, and the lower end of the weighing sensor is fixed on the reinforcing plate.

[0014] In the present invention, two first through-hole structures are provided on the top of the longitudinal seat, each of the first through-hole structures includes at least one first connecting through-hole communicating with the supporting groove, and the supporting rib is located between the two first through-hole structures;

[0015] The support seat is provided with a second connecting through hole corresponding one-to-one to the first connecting through hole, and the reinforcing plate is provided with a third connecting through hole corresponding one-to-one to the second connecting through hole. The vertically corresponding second connecting through hole and the third connecting through hole constitute a first mounting hole, and the first fixing bolt is inserted and fitted in the first mounting hole and the first connecting through hole.

[0016] In the utility model, the reinforcing plate is provided with a plurality of first vertical holes, the support seat is provided with second vertical holes corresponding to the first vertical holes one by one, and a support avoidance hole connected to the rope head avoidance space is formed between the first vertical holes and the second vertical holes corresponding to each other in the vertical direction; the weighing plate is provided with a plurality of vertical through holes corresponding to the support avoidance holes one by one, and each support avoidance hole corresponds to a rope head assembly.

[0017] In the present invention, the rope head assembly includes a pull rod, a wedge sleeve, a wedge-shaped seat and a buffer module, a wedge-shaped cavity is provided in the wedge sleeve, a pull rod seat is fixed at the lower end of the pull rod, and the pull rod seat is fixed to the top of the wedge-shaped cavity; a wedge block insertion opening is reserved at the upper part of the pull rod seat and the wedge sleeve; a wedge block extension opening is provided at the lower part of the wedge sleeve; the wedge seat is in the wedge-shaped cavity, and the small end of the wedge seat extends from the wedge block extension opening, and the side of the wedge seat is provided with an annular groove portion that cooperates with the wire rope; the upper part of the pull rod passes through the support avoidance hole and the vertical through hole in turn, and cooperates with the buffer module and uses a locking nut to limit the buffer module.

[0018] In the present invention, the pull rod includes a threaded portion, and the buffer module includes a mounting cylinder seat, a shock-absorbing rubber ring, a first spring seat, a spring member and a second spring seat, which are sequentially mounted on the threaded portion from bottom to top; the mounting cylinder seat abuts against the top of the reinforcing plate, and the mounting cylinder seat and the locking nut are both threadedly connected to the threaded portion, and the locking nut abuts against the top of the second spring seat.

[0019] In the present invention, a positioning convex ring inserted into the third connecting through hole is provided at the lower portion of the mounting cylinder seat.

[0020] The beneficial effects of the present invention are as follows: the main control module of the present invention is connected to a display for displaying the weight value monitored by the weighing unit in real time in the freight elevator car. When the rope head assembly is subjected to force to prompt the weighing pressure plate to apply pressure to the weighing sensor, the weighing sensor feeds back the current monitoring data to the main control module. The main control module converts the monitoring data of all weighing sensors into weight values and displays it on the display in the car, so that the freight workers can quickly know the weight of the goods, so that the freight workers can quickly increase or decrease the goods in the car, so as to meet the load operation requirements of the freight elevator, thereby improving the efficiency of transporting goods and enhancing the use efficiency of the freight elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 It is a schematic diagram of the combination of weighing plate, weighing unit and weighing base;

[0023] Figure 2A connection diagram of the main control module, load cell, display and elevator control cabinet;

[0024] Figure 3 This is a schematic diagram of the installation of the weighing sensor on the weighing base;

[0025] Figure 4 It is an exploded schematic diagram of the weighing plate, longitudinal seat and support seat;

[0026] Figure 5 is a three-dimensional diagram of the rope head assembly;

[0027] Figure 6 This is a schematic diagram of the installation of the buffer module;

[0028] Figure 7 It is a schematic diagram of the combination of the wedge sleeve and the wedge seat;

[0029] Figure 8 This is a schematic diagram of the display screen installed in the car. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0033] Reference Figure 1-8, a real-time load monitoring device for weight of a freight elevator, comprising a weighing plate 1, a weighing unit and a weighing base 2, wherein the weighing plate 1 is located above the weighing base 2, and a plurality of rope head assemblies 3 are provided on the weighing plate 1, and a rope head avoidance space for avoiding the rope head assembly 3 is provided on the weighing base 2, the upper part of the rope head assembly 3 is connected to the weighing plate 1, and the lower part extends into the rope head avoidance space; the weighing unit comprises two weighing sensors 4 and a main control module 5 connected to the weighing sensors 4 by wired communication, the weighing sensors 4 are located between the weighing plate 1 and the weighing base 2, the two weighing sensors 4 are symmetrically arranged, the upper end of the weighing sensor 4 is fixedly connected to the weighing plate 1 by bolt connection, and the lower end is fixedly connected to the weighing base 2 The main control module 5 is communicatively connected to a display 6 for displaying the weight value monitored by the weighing unit in real time in the freight elevator car. The display 6 adopts a digital tube and is installed on the inner side of the rear wall of the freight elevator car so that the freight workers can intuitively see the weight value. The main control module 5 can be installed on the weighing base 2 or in the elevator control cabinet 7. The specific installation setting can be based on the actual installation. At the same time, the main control module 5 is communicatively connected to the elevator control cabinet 7 in a wired manner. In this way, the main control module 5 can send an overload alarm signal and a weight value to the elevator control cabinet 7 when the freight elevator is overloaded, so that the elevator control cabinet 7 can control the freight elevator to stop working according to the overload alarm signal. In addition, the main control module 5 can be communicatively connected to the display 6 through the elevator control cabinet 7.

[0034] The main control module 5 of this embodiment is connected to a display 6 for displaying the weight value monitored by the weighing unit in real time in the freight elevator car. When the rope end assembly 3 is subjected to force to prompt the weighing pressure plate 1 to apply pressure to the weighing sensor 4, the weighing sensor 4 feeds back the current monitoring data to the main control module 5. The main control module 5 converts the monitoring data of all weighing sensors 4 into weight values and displays it on the display 6 in the car, so that the freight workers can quickly know the weight of the goods, so that the freight workers can quickly increase or decrease the goods in the car, so as to meet the load operation requirements of the freight elevator, thereby improving the efficiency of transporting goods and enhancing the use efficiency of the freight elevator.

[0035] As a preferred embodiment, the weighing base 2 includes two longitudinal seats 21 and support seats 22 that are overlapped and fixed on the top of the longitudinal seats 21 at the left and right ends. The two longitudinal seats 21 are symmetrically arranged and parallel to each other. The two longitudinal seats 21 and the support seats 22 enclose the rope end avoidance space.

[0036] Furthermore, the longitudinal seat 21 and the support seat 22 are both made of channel steel, wherein the longitudinal seat 21 has a support groove, which is located on the side of the longitudinal seat 21 facing away from the other longitudinal seat 21. A support rib 211 is provided in the support groove, and the support rib 211 is fixedly connected to the longitudinal seat 21 by welding. The support rib 211 is used to enhance the structural stability of the longitudinal seat 21. The upper end of the support seat 22 has a horizontal groove 221, and the weighing plate 1 is located above the horizontal groove 221. The weighing plate 1 and the horizontal groove 221 form a weighing protection space, and the weighing sensor 4 is located in the weighing protection space, thereby reducing the probability of the weighing sensor 4 being damaged by foreign interference and achieving the purpose of extending the service life of the weighing sensor 4.

[0037] In this embodiment, the weighing base 2 also includes a reinforcing plate 23 located in the horizontal groove 221. The reinforcing plate 23 is fixedly connected to the support seat 22 to form a transverse seat. The lower end of the weighing sensor 4 is fixed to the reinforcing plate 23 by bolt connection. The reinforcing plate 23 is used to enhance the structural stability of the support seat 22.

[0038] In this embodiment, the reinforcing plate 23 and the support seat 22 can be fixed by welding, and two first through-hole structures are provided on the top of the longitudinal seat 21, each first through-hole structure includes at least one first connecting through-hole 212 connected to the support groove, and the support rib 211 is located between the two first through-hole structures, so as to ensure the stability of the longitudinal seat 21 after the first connecting through-hole 212 is opened for connection; the support seat 22 is provided with a second connecting through-hole corresponding to the first connecting through-hole 212 one by one, and the reinforcing plate 23 is provided with a third connecting through-hole corresponding to the second connecting through-hole one by one, and the vertically corresponding second connecting through-hole and third connecting through-hole constitute the first mounting hole 20, and the first fixing bolt is inserted and fitted in the first mounting hole 20 and the first connecting through-hole 212, so as to realize the detachable connection between the longitudinal seat 21 and the transverse seat.

[0039] In this embodiment, the reinforcing plate 23 is provided with a plurality of first vertical holes, the support seat 22 is provided with second vertical holes corresponding one to one with the first vertical holes, and a support avoidance hole 30 connected to the rope head avoidance space 10 is formed between the first vertical holes and the second vertical holes corresponding to each other in the vertical direction; the weighing plate 1 is provided with a plurality of vertical through holes 11 corresponding one to one with the support avoidance holes 30, and each support avoidance hole 30 corresponds to a rope head assembly 3.

[0040] As a preferred embodiment, the rope head assembly 3 includes a pull rod 31, a wedge sleeve 32, a wedge seat 33 and a buffer module 34, wherein a wedge-shaped cavity is provided in the wedge sleeve 32, and a pull rod seat 311 is fixed at the lower end of the pull rod 31, and the pull rod seat 311 is fixed to the top of the wedge cavity; a wedge block insertion opening is reserved for the wedge seat 33 to be inserted into the wedge-shaped cavity at the upper part of the pull rod seat 311 and the wedge sleeve 32; a wedge block extension opening is provided at the lower part of the wedge sleeve 32 to communicate with the wedge-shaped cavity; the wedge seat 33 is in the wedge-shaped cavity, and the small end of the wedge seat 33 extends from the wedge block extension opening, and the side surface of the wedge seat 33 is provided with an annular groove portion that matches the wire rope, and the wire rope is fixed with a wire rope clamp after being wound around the annular groove portion. This is a prior art;

[0041] Furthermore, the upper part of the pull rod 31 passes through the support avoidance hole 30 and the vertical through hole 11 in sequence, and then cooperates with the buffer module 34 and uses a locking nut 35 to limit the buffer module 34. Specifically, the pull rod 31 includes a threaded portion, and the buffer module 34 includes a mounting cylinder seat 341, a shock-absorbing rubber ring 342, a first spring seat 343, a spring member 344 and a second spring seat 345 that are sequentially sleeved on the threaded portion from bottom to top; the mounting cylinder seat 341 abuts against the top of the reinforcing plate 23, and the lower part of the mounting cylinder seat 341 is provided with a screw thread inserted into the first The positioning protrusions in the three connecting through holes position the mounting cylinder seat 341 on the reinforcing plate 23, thereby improving the installation quality of the buffer module 34; the spring member 344 is in a compressed state, wherein the mounting cylinder seat 341 and the locking nut 35 are both threadedly connected to the threaded portion, and the locking nut 35 abuts against the top of the second spring seat 345; the mounting cylinder seat 341 includes a placement cavity for placing the shock-absorbing rubber ring 342, so that the shock-absorbing rubber ring 342 is positioned and fitted on the mounting cylinder seat 341, allowing the shock-absorbing rubber ring 342 to stably and effectively achieve the shock-absorbing function.

[0042] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. A weight real-time load monitoring device for a freight elevator, comprising a weighing plate (1), a weighing unit and a weighing base (2), wherein the weighing plate (1) is located above the weighing base (2), a plurality of rope end assemblies (3) are provided on the weighing plate (1), and a rope end avoidance space for avoiding the rope end assemblies (3) is provided on the weighing base (2), the upper portion of the rope end assembly (3) is connected to the weighing plate (1), and the lower portion extends into the rope end avoidance space; the weighing unit comprises at least one weighing sensor (4) and a main control module (5) communicatively connected to the weighing sensor (4), the weighing sensor (4) is located between the weighing plate (1) and the weighing base (2), the upper end of the weighing sensor (4) is fixedly connected to the weighing plate (1), and the lower end is fixedly connected to the weighing base (2); and the characteristics are: The main control module (5) is communicatively connected to a display (6) for displaying the weight value monitored by the weighing unit in real time in the freight elevator car.

2. The real-time weight load monitoring device for a freight elevator according to claim 1, characterized in that: The weighing base (2) comprises two longitudinal seats (21), and support seats (22) at the left and right ends respectively overlapped and fixed on the top of the longitudinal seats (21), and the two longitudinal seats (21) and the support seats (22) enclose the rope end avoidance space.

3. The real-time weight load monitoring device for a freight elevator according to claim 2, characterized in that: The longitudinal seat (21) has a support groove, the support groove is located on a side of the longitudinal seat (21) facing away from the other longitudinal seat (21), a support rib (211) is provided in the support groove, and the support rib (211) is fixedly connected to the longitudinal seat (21).

4. The real-time weight load monitoring device for a freight elevator according to claim 3, characterized in that: The upper end of the support seat (22) has a horizontal groove (221), the weighing plate (1) is located above the horizontal groove (221), the weighing plate (1) and the horizontal groove (221) form a weighing protection space, and the weighing sensor (4) is located in the weighing protection space.

5. The real-time weight load monitoring device for a freight elevator according to claim 4, characterized in that: The weighing base (2) further comprises a reinforcing plate (23) located in the horizontal groove (221), wherein the reinforcing plate (23) is fixedly connected to the supporting base (22) to form a transverse base, and the lower end of the weighing sensor (4) is fixed on the reinforcing plate (23).

6. The real-time weight load monitoring device for a freight elevator according to claim 5, characterized in that: Two first through-hole structures are provided on the top of the longitudinal seat (21), each of the first through-hole structures comprising at least one first connecting through-hole (212) communicating with the supporting groove, and the supporting rib (211) is located between the two first through-hole structures; The support seat (22) is provided with a second connecting through hole corresponding one-to-one to the first connecting through hole (212), and the reinforcing plate (23) is provided with a third connecting through hole corresponding one-to-one to the second connecting through hole. The vertically corresponding second connecting through hole and the third connecting through hole form a first mounting hole (20), and the first fixing bolt is inserted and fitted in the first mounting hole (20) and the first connecting through hole (212).

7. The real-time weight load monitoring device for a freight elevator according to claim 5, characterized in that: The reinforcing plate (23) is provided with a plurality of first vertical holes, the supporting seat (22) is provided with second vertical holes corresponding to the first vertical holes, and a support avoidance hole (30) connected to the rope head avoidance space (10) is formed between the first vertical holes and the second vertical holes corresponding to each other in the vertical direction; the weighing pressure plate (1) is provided with a plurality of vertical through holes (11) corresponding to the support avoidance holes (30), and each support avoidance hole (30) corresponds to a rope head assembly (3).

8. The real-time weight load monitoring device for a freight elevator according to claim 7, characterized in that: The rope head assembly (3) includes a pull rod (31), a wedge sleeve (32), a wedge seat (33) and a buffer module (34), wherein a wedge cavity is provided in the wedge sleeve (32), a pull rod seat (311) is fixed at the lower end of the pull rod (31), and the pull rod seat (311) is fixed to the top of the wedge cavity; a wedge block insertion opening is reserved at the upper part of the pull rod seat (311) and the wedge sleeve (32); a wedge block extension opening is provided at the lower part of the wedge sleeve (32); the wedge seat (33) is in the wedge cavity, and the small end of the wedge seat (33) extends from the wedge block extension opening, and the side of the wedge seat (33) is provided with an annular groove portion that matches the wire rope; the upper part of the pull rod (31) passes through the support avoidance hole (30) and the vertical through hole (11) in sequence, and then matches the buffer module (34) and uses a locking nut (35) to limit the buffer module (34).

9. The real-time weight load monitoring device for a freight elevator according to claim 8, characterized in that: The pull rod (31) includes a threaded portion, and the buffer module (34) includes a mounting cylinder seat (341), a shock-absorbing rubber ring (342), a first spring seat (343), a spring member (344) and a second spring seat (345) which are sequentially mounted on the threaded portion from bottom to top; the mounting cylinder seat (341) abuts against the top of the reinforcing plate (23), the mounting cylinder seat (341) and the locking nut (35) are both threadedly connected to the threaded portion, and the locking nut (35) abuts against the top of the second spring seat (345).

10. The real-time weight load monitoring device for a freight elevator according to claim 9, characterized in that: The lower part of the mounting cylinder seat (341) is provided with a positioning convex ring inserted into the third connecting through hole.

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