CN202808106U - Elevator loading detection device - Google Patents

Abstract

The utility model provides an elevator load detection device, which comprises at least one loading measurement group, a sensor display instrument, a computer and an intelligent hydraulic control device, and the computer is respectively connected with the sensor display instrument and the intelligent hydraulic control device; The loading measurement group includes a tension sensor, a hydraulic cylinder and a foundation embedded plate, and a first steel wire rope is connected to the top of each tension sensor, and each of the first steel ropes passes through the car bottom beam and is connected to the bottom of the car. , the lower end of each tension sensor is connected to a piston vertical rod of the hydraulic cylinder through a second wire rope, and the bottom of each hydraulic cylinder is fixed on the corresponding foundation embedded plate. The utility model is small in size, light in weight, easy to carry, strong in applicability, simple and easy to operate, and at the same time, the detected value is more reliable and accurate.

Description

An elevator load detection device

【Technical field】

The utility model relates to an elevator load detection device.

【Background technique】

With the rapid development of my country's economy, high-rise buildings have sprung up like mushrooms after rain. Elevator is an essential device for high-rise buildings. As a unique means of transportation, it has been rapidly popularized and developed. At the same time, the elevator is also a mechatronics product with high technical content. Because it fully uses computer control, intelligence and Electrical and electronic technology, so it has the characteristics of high technical content and rapid development. When high-rise buildings have higher and higher requirements for elevator performance and control systems, the corresponding safety protection systems are required to be more advanced and reliable.

The overload protection function is an important protection function of the elevator. A large number of elevator accidents exposed by newspapers, TV and other media are related to the failure of the elevator car overload alarm. Especially when the elevator is operating without a driver, because people don't know the basic performance of the elevator, they will blindly escape from the car when encountering a pulley or other abnormal operation, resulting in many tragedies that should not have happened. The overload protection function is very important to ensure the personal safety of the elevator personnel, the goods transported by the elevator, and the safety of the elevator equipment itself.

During the use of the overload protection device, due to various reasons, its effectiveness and accuracy will inevitably change. If the function of the device fails or the load exceeds 110% of the rated load and cannot move, the elevator will have potential safety hazards. In order to ensure that each elevator has a reliable, accurate and stable overload protection device, the elevator maintenance company must regularly maintain and test the device, but in actual operation due to various reasons, standard weights are used as loads or other loads The conditions for the function of overload detection are relatively limited, and in many cases it is simply impossible to find enough load for testing. Therefore, no matter whether it is an elevator maintenance company or a special equipment inspection and testing organization, there is a certain neglect of the overload protection of the elevator. However, it is not known whether the load indicated by the alarm meets the requirements of the standard.

At present, there is no special instrument on the market that can realize the function of no-load detection elevator overload alarm. The inspection of the elevator overload alarm protection function is now a blind spot, and it is also a major cause of elevator safety hazards and even accidents.

The announcement date is July 18, 2012, and the announcement number is CN202337623U Chinese patent, which discloses a kind of elevator load detector. A pin hole matched with the pin shaft is processed on the top, the lever is hinged with the bracket through the pin shaft, one end of the support rod is connected with the bracket, and the other end is connected with the upper support seat. This patent is designed based on the principle of leverage, and its upper support seat needs to act on the upper sill of the elevator hall door, so the upper sill of the elevator hall door must provide sufficient reaction force; however, in actual operation, the upper sill of the elevator hall door The sill may not be able to achieve this function, for example: the upper sill of some elevator hall doors is not strong enough to bear the supporting force; or the upper sill of some elevator hall doors is too narrow to support the upper support seat of the detector, resulting in the elevator load detection It cannot be effectively carried out; in addition, the detector is too bulky and heavy to be portable; it should be developed towards light weight and miniaturization.

【Content of invention】

The technical problem to be solved by the utility model is to provide an elevator load detection device, which is small in size, light in weight, easy to carry, strong in applicability, easy to operate, and can ensure effective elevator load detection.

The utility model is achieved in that:

A load detection device for an elevator, the detection device is used in conjunction with an elevator car, and a car bottom of the elevator car is erected above a car bottom beam through two rubber blocks; wherein, the detection device includes at least A load measurement group, a sensor display instrument, a computer and an intelligent hydraulic control device, the computer is respectively connected with the sensor display instrument and the intelligent hydraulic control device; each of the load measurement groups includes a tension sensor, a hydraulic cylinder and a The foundation embedded plate, the top of each tension sensor is connected with a first steel wire rope, each of the first steel wire ropes passes through the car bottom beam and is connected to the bottom of the car, and the lower end of each tension sensor passes through a first wire rope. The two steel wire ropes are connected with a piston vertical rod of the hydraulic cylinder, and the bottom of each hydraulic cylinder is fixed on the corresponding foundation embedded board, and each of the foundation embedded boards is embedded in a foundation pit of the elevator; Each tension sensor is connected to a sensor display instrument, and each hydraulic cylinder is connected to an intelligent hydraulic control device through an oil pipe.

Further, the number of the load measurement groups is two, and the two load measurement groups are correspondingly arranged directly below the two sides of the bottom beam of the car.

Further, the bottom of the car is provided with two hoisting rings corresponding to the first wire ropes, each of the hoisting rings is respectively set directly above the corresponding foundation embedded board, and each of the first wire ropes is fixed on the corresponding hoisting ring.

Further, the hydraulic cylinder includes a cylinder body and a piston, the piston includes a piston head and a piston vertical rod vertically arranged on the piston head, and the piston head is horizontally arranged in the oil groove of the cylinder body, so The piston vertical rod passes through the top of the oil cylinder body, and the oil pipe is connected with the hydraulic oil cylinder through an oil inlet hole, and the oil inlet hole is arranged above the piston head.

The utility model has the advantages of:

The sensor display instrument displays the force of the tension sensor in real time, and feeds the signal back to the computer. The computer feeds and returns oil to the hydraulic cylinder through the intelligent hydraulic control device, thus forming a closed-loop control system until the tension sensor and the bottom of the elevator car reach Predetermined load, elevator overload, alarm system alarm. The load applied by the device is accurate and reliable, and any load can be applied to the elevator according to specific needs, and is suitable for overload detection of any elevator with a carrying capacity.

In addition, the elevator load detection device of the present invention is small in size, light in weight, easy to carry and carry, and has a simple structure, so it is convenient and easy to operate when inspecting the elevator overload device; Strong, solves the problems of cumbersome weight handling, high labor intensity and low efficiency when using weights to detect elevator overload.

【Description of drawings】

The utility model will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view of the hydraulic cylinder of the present invention.

【Detailed ways】

Referring to Fig. 1 and Fig. 2, the embodiment of the present utility model is described in detail.

As shown in Figures 1 and 2, the utility model relates to a load detection device for an elevator. The detection device is used in conjunction with an elevator car 1, and a car bottom 11 of the elevator car 1 is erected by two rubber blocks 12. On the top of a car bottom beam 13; the detection device includes at least one load measurement group 2, a sensor display instrument 3, a computer 4 and an intelligent hydraulic control device 5, and the computer 4 is connected with the sensor display instrument 3 and the sensor display instrument 3 respectively. The intelligent hydraulic control device 5 is connected; each of the loading measurement groups 2 includes a tension sensor 21, a hydraulic cylinder 22 and a foundation embedded plate 23, and a first steel wire rope 24 is connected to the top of each of the tension sensors 21, and each of the The first wire rope 24 passes through the car bottom beam 13 and is connected to the car bottom 11, and the lower end of each tension sensor 21 is connected to a piston vertical rod 221 of the hydraulic cylinder 22 through a second wire rope 25, The bottom of each hydraulic cylinder 22 is fixed on the corresponding foundation embedded board 23, and each described foundation embedded board 23 is all embedded in a foundation pit 14 of the elevator; each of the tension sensors 21 is connected to The sensor displays the meter 3 , and each hydraulic cylinder 22 is connected to the intelligent hydraulic control device 5 through an oil pipe 51 .

The number of the load measurement groups 2 is two groups, and the two groups of load measurement groups 2 are arranged directly below the two sides of the car bottom beam 13 respectively.

The car bottom 11 is provided with two suspension rings 111 corresponding to the first steel wire rope 24, each of the suspension rings 111 is respectively arranged directly above the corresponding foundation embedded board 14, each of the first steel wire ropes 24 is fixed on the corresponding suspension ring 111 on.

2, the hydraulic cylinder 22 includes a cylinder body 222 and a piston 223, the piston 223 includes a piston head 224 and a piston vertical rod 221 vertically arranged on the piston head 224, and the piston head 224 is arranged horizontally In the oil groove 225 of the oil cylinder body 222, the piston vertical rod 221 passes through the top of the oil cylinder body 222, and the oil pipe 51 is connected with the hydraulic cylinder 22 through an oil inlet hole 226, and the oil inlet hole 226 is arranged on above the piston head 224 .

Pre-tighten the second wire rope 25, the computer 4 sets the alarm critical load that needs to be loaded, the intelligent hydraulic control device 5 feeds oil into the hydraulic cylinder 22, the piston 223 moves downward, and the first wire rope 24 and the second wire rope 25 are tightened to realize For the loading of the elevator car bottom 11, the tension sensor 21 is subjected to the same pulling force, and the force value is fed back to the computer 4 through the sensor display instrument 3, and the computer 4 controls the intelligent hydraulic control device 5 in real time according to the feedback signal of the tension sensor 21. The hydraulic oil cylinder 22 enters and returns oil, thus forming a closed-loop control system until the elevator overloads an alarm, so as to realize the overload detection of the elevator.

The sensor display instrument of the utility model displays the force of the tension sensor in real time, and feeds back the signal to the computer, and the computer feeds and returns oil to the hydraulic oil cylinder through an intelligent hydraulic control device, thus forming a closed-loop control system until the tension sensor and the elevator When the bottom of the car reaches the predetermined load and the elevator is overloaded, the alarm system will alarm. The load applied by the device is accurate and reliable, and any load can be applied to the elevator according to specific needs, and is suitable for overload detection of any elevator with a carrying capacity.

In addition, the elevator load detection device of the present invention is small in size, light in weight, easy to carry and carry, and has a simple structure, so it is convenient and easy to operate when inspecting the elevator overload device; It is more accurate and has strong applicability, and solves the problems of cumbersome weight handling, high labor intensity and low efficiency in using weights to detect elevator overload. .

Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that the specific embodiments we describe are only illustrative, rather than used to limit the scope of the present utility model. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present utility model shall fall within the protection scope of the claims of the present utility model.

Claims (4)

1. elevator load detecting device, described detecting device cooperate a lift car to use, and a car bottom of described lift car is erected at the top of a car bottom girder by two rubber blocks; It is characterized in that: described detecting device comprises at least one loading measurement group, a sensor display instrument, a computing machine and an intelligent hydraulic control setup, and described computing machine links to each other with sensor display instrument and intelligent hydraulic control setup respectively; Each described loading measurement group comprises a pulling force sensor, a hydraulic ram and a basic embedded board, the top of each described pulling force sensor is connected with one first steel rope, each described first steel rope wore described car bottom girder and was connected to car bottom, the lower end of each described pulling force sensor links to each other with a piston montant of described hydraulic ram by one second steel rope, the bottom of each described hydraulic ram is fixed on the corresponding basic embedded board, and each described basic embedded board all is embedded in the foundation ditch of described elevator; Each described pulling force sensor all is connected to the sensor display instrument, and each described hydraulic ram all is connected to the intelligent hydraulic control setup by an oil pipe.

2. a kind of elevator load detecting device according to claim 1, it is characterized in that: the group number of described loading measurement group is two groups, described two groups load the measurement groups respectively corresponding be arranged on car bottom girder both sides under.

3. a kind of elevator load detecting device according to claim 2, it is characterized in that: described car bottom is provided with two suspension ring corresponding with the first steel rope, each described suspension ring be separately positioned on corresponding basic embedded board directly over, each described first steel rope is fixed on the corresponding suspension ring.

4. each described a kind of elevator load detecting device according to claim 1 ~ 3, it is characterized in that: described hydraulic ram comprises an oil cylinder body and a piston, described piston comprises a piston head and is vertically set on piston montant on the piston head, described piston head is horizontally set with in the oil groove of described oil cylinder body, described piston montant wore the top of oil cylinder body, described oil pipe links to each other with hydraulic ram by a fuel feed hole, and described fuel feed hole is arranged on the top of piston head.

Images