CN214610957U - Loading module and elevator overload protection device performance detection system - Google Patents

Abstract

The utility model relates to a loading module and elevator overload protection device performance detecting system. The loading module is used for providing load in the performance detection process of the elevator overload protection device and comprises the following components: the clamp is fixedly connected with the elevator guide rail and positioned at the bottom of the car, and the clamp circumferentially surrounds the elevator guide rail along the elevator guide rail; the loader is connected between the elevator car and the clamp holder and loads the elevator car; and the loading data collector is used for collecting the loading data of the loader. The loading module and the guide rail form fixed connection, no unbalance loading force is formed, and loading balance can be ensured. And the universality of the loading module is good, and the loading module can be applied to elevators with guide rails.

Description

Loading module and elevator overload protection device performance detection system

Technical Field

The utility model relates to an engineering equipment load detection technical field especially relates to a loading module, elevator overload protection device's performance detecting system.

Background

Various engineering equipment has certain load limitation. Such as those familiar in daily life, when the load in the car exceeds the rated load, an overload protection device provided in the elevator will respond, such as giving an alarm, forcing the car door to open, etc. If the overload protection device can not work normally, unsafe states such as opening the door, going to the ladder, squatting at the bottom and the like can occur in the using process of the elevator, so that casualty accidents such as personnel shearing, falling into a hoistway and the like are caused. It is therefore particularly important to periodically test the performance of the load protection device for the elevator.

An essential step in the performance detection process of the elevator overload protection device is the loading of the car. The existing loading modes generally comprise two types of loading modes, namely loading by manually carrying weights into a car and loading by a loading device arranged at the bottom or the top of the car. The weight loading mode is characterized in that the weight loading mode needs to enter and exit the car manually to complete loading, the problems of low efficiency, high labor intensity and high danger coefficient exist, the protection on the appearance of the car is not friendly, and the weight loading mode cannot realize linear loading. The specific loading device needs to be designed at the bottom or the top of the lift car in a matching way, the existing structural characteristics of the elevator are changed, the loading device can work smoothly, and the installation is complicated; there is also a detection of elevator overload protection devices that cannot be applied to all forms. Therefore, the versatility is not good in both the installation process and the applicable object.

SUMMERY OF THE UTILITY MODEL

Therefore, a loading module is needed to be provided for solving the problems of low efficiency, poor universality and the like in the performance detection process of the existing elevator overload protection device. The utility model also provides a performance detecting system of elevator overload protection device with above-mentioned loading module.

A loading module for providing a load during performance testing of an elevator overload protection device, comprising:

the clamp is fixedly connected with the elevator guide rail and positioned at the bottom of the car, and the clamp circumferentially surrounds the elevator guide rail along the elevator guide rail;

the loader is connected between the elevator car and the clamp holder and loads the elevator car; and

and the loading data collector is used for collecting the loading data of the loader.

In one embodiment, the clamp comprises a first clamp and a second clamp, the first clamp comprises a clamping piece and a balance locking rod which is rotatably connected with one end of the clamping piece, the balance locking rod can rotate relative to the clamping piece and is fixedly connected with the other end of the clamping piece so as to clamp the elevator guide rail, and the clamping piece is connected with the loader; the second holder comprises a holding barrel and a guide rod connected with the holding barrel, the holding barrel comprises a barrel bottom and a barrel body extending out from the barrel bottom, the barrel bottom is abutted to the end part of the elevator guide rail, the barrel body is circumferentially wrapped on the elevator guide rail, one end of the guide rod is connected with the barrel body, and the other end of the guide rod is connected with the clamping piece.

In one embodiment, the elevator guide rail is T-shaped in cross section, the first clamp further comprises two sliding members, one of the sliding members is slidably connected to one end of the clamping member, the other sliding member is slidably connected to the other end of the clamping member, and the balancing locking lever is rotatably connected with one of the sliding members and can be locked with the other sliding member to clasp the elevator guide rail.

In one embodiment, the elevator guide rail connecting device further comprises connecting rods, the number of the clamping devices is consistent with that of the elevator guide rails, the number of the clamping devices is at least two, and the connecting rods are connected between two adjacent clamping devices.

In one embodiment, the loading data collector comprises a force sensor and a data analyzer, wherein the force sensor is used for detecting the output load of the loader and generating a detection signal, and the data analyzer is used for collecting the detection signal of the force sensor.

In one embodiment, the elevator further comprises a connecting member connected between the car bottom and the loader.

In one embodiment, the number of the loaders is multiple, and each gripper is configured to be connected with multiple loaders.

In one embodiment, the loader further comprises a power source mounted on the vehicle body structure having a moving function.

In one embodiment, the gripper and the load data collector are placed on the vehicle body structure during transportation of the load module.

An elevator overload protection device performance detection system, comprising:

the loading module is used for loading the elevator overload protection device arranged at the top of the elevator car, the bottom of the elevator car or in the elevator machine room and generating loading data;

the signal acquisition module is arranged at the elevator control cabinet and/or in the elevator car and used for generating a feedback signal according to whether the elevator overload protection device gives an alarm or not;

the car attitude detection module is arranged in the car and used for detecting the car attitude and generating an attitude signal; and

and the control terminal is used for controlling the loading module to load and acquire loading data, and receiving the feedback signal and the attitude signal, adjusting the loading according to the attitude signal, and judging the performance of the elevator overload protection device according to the loading data and the feedback signal.

Compared with the prior art, the loading module and the guide rail form wrapping fixed connection, no unbalance loading force is formed, and loading balance can be ensured. And the universality of the loading module is good, and the loading module can be applied to the elevator provided with the guide rail. In addition, the detection system comprises a signal acquisition module for detecting whether the alarm device of the elevator generates an alarm action, so that a feedback signal can be generated more accurately and more timely, and the control terminal can make correct judgment whether the related performance meets the requirements. Compared with the mode of manually receiving the alarm signal, the whole detection process can close the car landing door and the car door in a mode of arranging the signal acquisition module, and detection personnel do not need to be close to the car, so that the detection process is safer, and the detection result is more real. Moreover, compare in prior art and need many people just can accomplish the testing process, the detecting system that provides in this application can be accomplished the operation by single, reduces the human cost by a wide margin.

Drawings

Fig. 1 is a schematic view of a performance detection system of an elevator load protection device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a portion of the structure of a load module in the performance testing system of FIG. 1;

fig. 3 and 4 are diagrammatic views illustrating steps in assembling the structure of fig. 2 with elevator guide rails;

fig. 5 is a schematic view of a loading process of a performance detection method for an elevator load protection device according to an embodiment of the present invention;

fig. 6 and 7 are schematic diagrams of performance detection systems of elevator load protection devices according to different embodiments of the present invention;

fig. 8 is a schematic view of another application of the performance detection system of the elevator load protection device according to an embodiment of the present invention.

Icon:

the elevator comprises a lift car 10, a guide rail 11, a traction rope 12, a traction wheel 13, a balancing weight 14 and a control cabinet 15; a buffer 16;

a loading module 20; a clamper 21; a clamping member 211; a balanced locking bar 212; the sliding members 213, 214; a hydraulic pipe 216; a briquetting 217; the non-slip protrusions 218; a grip cylinder 221; a guide bar 222; a barrel bottom 223; a barrel 224;

a loader 23; a power source 231; a connecting rod 24;

a load data collector 25; a force sensor 251; a connecting member 26;

a signal acquisition module 30; a car attitude detection module 40; control terminal 50

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.

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.

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.

An embodiment of the utility model provides an elevator safety arrangement's performance detecting system for whether the performance that detects the safety arrangement in the elevator meets the requirements. Referring to fig. 1, the elevator is attached to a shaft installed in a building or a shaft of an outer wall of a building, and includes a car 10, guide rails 11, a traction rope 12, a traction sheave 13, a counter weight 14, and a control cabinet 15. The car 10 is located in the hoistway and is slidably connected to guide rails 11, and the car 10 and a counterweight 14 are connected by a traction rope 12 and bypass a traction sheave 13. The control cabinet 15 can be installed in a top machine room of a building, and is electrically connected with a power mechanism of the traction wheel 13 in a wireless or wired manner, so as to control the operation of the traction wheel 13, and further drive the car 10 to perform lifting movement relative to the guide rail 11.

In this embodiment, the safety protection device is an overload protection device. The overload protection device can be a machine room weighing type, a car top weighing type or a car bottom weighing type, namely the overload protection device can be arranged at the machine room, the car top or the car bottom. In any type, the alarm device is connected and arranged, and when the performance of the overload protection device meets the requirement and the load in the car 10 is detected to reach the threshold value for triggering the alarm device, the alarm device can generate an alarm action. The alarm action may be in the form of an audible and visual electrical signal that is transmitted outward and recognized by the user or a dedicated device.

The performance detection system may be used to detect whether the performance of the overload protection device is satisfactory. The performance detection system comprises a loading module 20, a signal acquisition module 30, a car attitude detection module 40 and a control terminal 50. The loading module 20 is used for loading the car 10 and generating loading data, and the signal acquisition module 30 is used for generating a feedback signal according to whether the overload protection device gives an alarm or not. The car attitude detection module 40 is provided in the car 10 for detecting an attitude of the car 10 and generating an attitude signal. The control terminal 50 is configured to adjust a loading process of the car 10 according to the loading data, the feedback signal, and the attitude signal, and determine whether performance of the overload protection device meets requirements according to the loading data and the feedback signal.

Referring to fig. 1 and 2 together, the load module 20 includes a clamper 21, a loader 23, and a load data collector 25. The gripper 21 is intended for fixed connection with the elevator guide rail 11. The loader 23 is rigidly connected with the holder 21, and when the loader 23 loads the car 10, the holder 21 is used as a stressed supporting point, so the connection stability of the holder 21 and the guide rail 11 directly determines whether the loading process of the loader 23 can be smoothly carried out. In one embodiment, the clamp 21 surrounds the rail 11 along the circumference of the rail 11 and forms a sufficient static friction with the rail 11. Because the clamp 21 surrounds the circumference of the guide rail 11, in the process of loading the cage 10 by the loader 23, the stress of the guide rail 11 is more uniform, and the condition that no unbalance loading force exists on the guide rail 11 is ensured, so that the safety of the detection process can be effectively ensured.

More specifically, in one embodiment, the clamp 21 includes a clamping member 211 and a balance locking lever 212 rotatably coupled to one end of the clamping member 211, wherein the balance locking lever 212 is capable of rotating relative to the clamping member 211 and is lockingly coupled to the other end of the clamping member 211 to clasp the elevator guide rail 11.

Furthermore, the clamp 21 further comprises two sliding members 213, 214, wherein one sliding member 213 is slidably connected to one end of the clamping member 211, the other sliding member 214 is slidably connected to the other end of the clamping member 211, and the balance locking lever 212 is rotatably connected to one sliding member 213 and can be locked to the other sliding member 214 to clasp the elevator guide rail 11.

In one embodiment, the elevator guide rail 11 has a T-shaped cross-section, and the clamping member 211 is shaped to match the cross-section of the guide rail 11 and has an omega shape, in which a cavity is formed for receiving the guide rail 11. Two sliding members 213, 214 are substantially n-shaped, are slidably connected to the two free ends of the clamping member 211, respectively, and the openings of the two sliding members 213, 214 are disposed opposite to each other. The two sliding members 213, 214 can slide relative to the chucking member 211 in directions away from or toward each other. Referring to fig. 3 and 4, when it is desired to fixedly connect holder 21 to rail 11, counter lock lever 212 is first pivoted open about slide 213 to expose the cavity of clamp member 211. The two sliding parts 213, 214 are then moved away from each other so that the clamping part 211 can be slipped onto the guide rail 11 in the circumferential direction. The slides 213, 214 are then returned to the original position, and the counter lock lever 212 is finally rotated in the opposite direction and locked to the slide 214. In this way, the gripper 21 completes the circumferential wrapping of the guide rail 11, as shown in fig. 2.

The relative fixing of the holder 21 to the guide rail 11 and the formation of a sufficiently large static friction force therebetween can be variously changed. One way of achieving this is by hydraulic clamping. As shown in fig. 1 and 2, the clamper 21 further includes a hydraulic pump (not shown), and a hydraulic pipe 216 connected between the hydraulic pump and the clamping member 211, the sliding members 213, 214, and a pressing piece 217 provided on the clamping member 211, the sliding members 213, 214. By the driving of the hydraulic pump, the hydraulic pressure can be transmitted to the clamping piece 211 and the pressing piece 217 on the sliding pieces 213 and 214 through the hydraulic pipe 216, and the pressing piece 217 is pressed against the surface of the guide rail 11 to clamp the guide rail 11, so that the clamp 21 is fixedly connected with the guide rail 11. The number and arrangement of the pressing blocks 217 may be changed according to specific needs. In order to make the static friction force more uniform and prevent the occurrence of unbalance loading, the pressing pieces 217 may be disposed on the clamping piece 211 and the sliding pieces 213 and 214 at equal intervals to form uniform force bearing points in the circumferential direction of the guide rail 11. In order to provide a still further reliable static friction between the clamper 21 and the rail 11, a non-slip projection 218 may be further provided on the surface of the clamping member 211 facing the rail 11. It will be appreciated that the stud 218 may also be provided on the surface of the slider 213, 214 facing the rail 11.

The static friction force between the clamper 21 and the guide rail 11 can be achieved by pneumatically driving the pressing piece 217, or by driving the clamping piece 211 to perform a telescopic clamping action by using a speed reduction motor, or by forming magnetic attraction between the clamping piece 211, the sliding pieces 213 and 214 and the guide rail 11 by using electromagnetic force.

The clamper 21 may be provided in plural, and at least one clamper 21 is provided on each guide rail 11. In some embodiments, as shown in fig. 1, between adjacent rails 11, a link 24 may also be provided for connecting the respective grippers 21. The connecting rod 24 can maintain the stability of the clamper 21 in the previous installation and working process, and plays the roles of fixed support, balanced load balancing and jitter elimination.

The loader 23 is connected between the bottom of the car 10 and the clamper 21, and applies a load to the car 10. It will be appreciated that the number of loaders 23 may correspond to the number of grippers 21, for example one loader 23 may be provided on one gripper 21. The number of the loader 23 may be larger than the number of the clamper 21, for example, a plurality of loaders 23 are connected to one clamper 21. The plurality of loaders 23 load the car 10 at the same time, and the position balance can be considered to ensure that the load force does not generate an unbalance load. In the embodiment shown in fig. 1, the loader 23 is fixed to the guide rail 11 by the clamper 21, and thus a tension force is applied to the car 10 downward. The loader 23 includes a power source 231, and the power source 231 may be in communication with the control terminal 50, which may enable the control terminal 50 to control the power source 215 to manipulate the loader 23 to load, adjust the loaded load, or unload the car 10. The power source 231 may also constitute a power source that controls the operation of the gripper 21. Further, the power source 231 may be mounted on a vehicle body structure having a moving function. Meanwhile, the vehicle body structure may have a function of housing all other devices in addition to the loading power source 231. In this way, all other devices of the performance detection system, such as the clamper 21 of the loading module 20, the loading data collector 25, etc., the signal acquisition module 30, the car attitude detection module 40, etc., can be placed on the car body structure during transportation, and can be transported again after reaching the position of the elevator to be detected. This configuration may rely on less manpower to complete the entire testing process than other testing devices in the prior art.

In one embodiment, the loading module 20 further comprises a connection 26, the connection 26 being connected between the bottom of the car 10 and the loader 23. The connection 26 may be a wire rope, cable, rod, or the like, for connection between the loader 23 and a connection member at the bottom of the car 10 to facilitate the fixed connection of the loader 23 to the bottom of the car 10.

The loading data collector 25 is used for collecting loading data of the loader 23. In one embodiment, the loading data collector 25 includes a force sensor 251 and a data analyzer (not shown), wherein the force sensor 251 is disposed at the output end of the loader 23, and is used for detecting the output load of the loader 23 and generating a detection signal. The data analyzer may be embedded beside the force sensor 251 for collecting the detection signal of the force sensor 251. The data analyzer can collect the detection signal of the force sensor 251 in real time, and the collection frequency is high. The detection signal can match corresponding loading data, so that the control terminal 50 can provide a basis for executing corresponding operations.

The signal detection module 30 is arranged at the elevator control cabinet and/or in the elevator car 10. For example, an alarm device, such as an alarm bell, is typically disposed within the car 10, and the signal acquisition module 30 may be mounted proximate to the alarm device. The signal collecting module 30 can detect whether the alarm device generates an alarm action, and generate a feedback signal according to the state of the alarm device, so that the control terminal 50 can execute a corresponding operation. For example, a basis is provided for determining whether the performance of the overload protection device meets the requirements.

The car posture detection module 40 is configured to detect a posture of the car 10 and generate a posture signal, so that the control terminal 50 provides a basis for executing a corresponding operation. For example, the control terminal 50 may determine whether to adjust the loading or stop the loading according to the attitude signal. The attitude signal of the car 10 may include the three-dimensional spatial state of the car 10, such as levelness, verticality, etc., during loading of the car 10; the loading state of the car 10 can also comprise the vertical displacement of the car 10 during the loading process, the opening and closing states of the elevator landing door and the car door, and the like. These attitude signals may be provided to the control terminal 50 to determine whether adjustment, balance loading is required to maintain the health of the car 10.

The car attitude detection module 40 may be disposed within the car 10, for example, directly on the floor of the car 10.

The control terminal 50 is used for controlling the loading module 20 to load and obtain loading data, and is used for receiving a feedback signal of the signal acquisition module 30 and an attitude signal of the car attitude detection module 40. The control terminal 50 can judge and control the progress of the loading process according to the loading data; whether the magnitude of the loading force needs to be adjusted or not and whether the magnitude of the loading force of different loaders 23 needs to be adjusted or not can be judged according to the attitude signals; and whether the performance of the overload protection device meets the requirement can be judged according to the feedback signal.

The control terminal 50 may be a terminal device having running processing software, such as a smart phone or a tablet computer. The control terminal 50 can be in communication connection with the loading module 20, the signal acquisition module 30 and the car posture detection module 40 through a wireless network. The user can hold the control terminal 50 by hand and perform operations such as data input, monitoring of the detection process, result output and the like outside the elevator. The control terminal 50 may be provided with an input device such as a keyboard and a touch screen for a user to input a control command. The control terminal 50 may have an output device, such as a display, for displaying the output result of the detection process in real time. The control terminal 50 may also be connected to an external output device, such as a printer, for outputting the detection process or the detection result to a tangible carrier.

A method for detecting the performance of an elevator safety protection device, such as an overload protection device, by using the performance detection system will be described below with reference to fig. 5.

Before the detection method is implemented, software and hardware equipment of the detection system needs to be installed and debugged. Firstly, safety warning signs are arranged at the exits of each floor of the elevator, the car 10 is stopped at the upper floor of the base station, and the state is changed into the maintenance state. The maintainer enters the shaft pit from the base station layer, carries the loading module 20 to the pit, and connects and sets the clamper 21, the loader 23 and the loading data collector 25, so that each functional component of the loading module 20 forms an assembling and connecting relationship with the car 10, the guide rail 11 and the like.

Then, the maintenance personnel leave the pit, the car 10 is moved to a base station position to open the landing door and the car door, and the signal acquisition module 30 and the car posture detection module 40 are installed in the car 10.

After the installation of each hardware facility is finished, the maintainers test the communication connection between the control terminal 50 and the loading module 20, the signal acquisition module 30 and the car attitude detection module 40, and close the car door and the landing door after the signals are stable and correct. Then, the main parameter information of the elevator is input into the control terminal 50, and a loading curve and a qualification standard are formulated according to specific requirements. Before performing formal detection, debugging and pre-connection, such as manual pre-loading, may be performed, and a loading force is input from the control terminal 50 to determine whether the load output of the loading module 20 is correct. After all mechanical connections, communication connections and the like are ensured to be correct, the whole system can be in a standby state and is ready to enter a detection process.

And in the first step of the detection process, a loading command is generated according to the main parameter information of the elevator. This loading command can be generated by the control terminal 50, for example, according to a system algorithm, to a loading curve command adapted to the elevator to be examined. Such as freight elevators and passenger elevators, the loading curves will differ according to the respective requirements and the control terminal 50 will generate corresponding loading curve commands according to the received elevator parameters. The loading command may also be provided by the control terminal 50 with a variety of different loading profiles based on the system algorithm, and then selected by the inspector. Regardless of the form of the loading command, the loading command can be operated by the detection personnel in the control terminal 50, and then the control terminal 50 enters the loading process after executing the loading command. At the same time of loading, the control terminal 50 can acquire the loaded data.

In one embodiment, as shown in fig. 5, the loading includes a linear fast loading phase a, an observation change loading phase B, a slow loading phase C, a steady hold loading phase D, a first unloading phase E, and a second unloading phase F in sequence. The letters A, B, C, D represent the loading load of each loading stage, wherein A is less than or equal to 0.5P, B is less than or equal to 0.5P and less than or equal to 0.8P, C is less than or equal to 0.8P and less than or equal to 0.95P, D is less than or equal to 0.95P and less than or equal to 1.1P, and P is the rated load of the elevator. The loading phase may be linear loading as performed by the loading module 20.

In the second step of the detection process, in the loading process, the signal acquisition module 30 generates a feedback signal according to whether the overload protection device generates an alarm action. The control terminal 50 can obtain the feedback signal generated by the signal acquisition module 30 in real time while obtaining the loading data in real time.

In the third step of the detection process, the control terminal 50 may provide a qualification criterion, and determine whether the performance of the overload protection device meets the qualification criterion, that is, whether the performance of the overload protection device meets the requirement, by combining the loading data generated by the loading module 20 and the feedback signal generated by the signal acquisition module 30.

For example, in some embodiments, the rated load M of the elevator is greater than or equal to 750Kg, when the load is within the range of M-1.1M, if the overload protection device generates an alarm, the performance of the overload protection device is judged to meet the requirement, and when the load exceeds 1.1M, if the overload protection device does not generate an alarm, the performance of the elevator safety protection device is judged to be not met the requirement. In this case, it is necessary to stop the continuation of the inspection and to unload it to ensure the safety of the elevator and the inspection personnel.

In some embodiments, the rated load M of the elevator is less than 750Kg, when the load is in the M- (M +75) range, if the overload protection device generates an alarm, the performance of the overload protection device is judged to be satisfactory, and when the load exceeds M +75, if the overload protection device does not generate an alarm, the performance of the overload protection device is judged to be unsatisfactory.

In some embodiments, the rated load M of the elevator is judged that the performance of the overload protection device is not satisfactory when the overload protection device generates an alarm when the loaded load is less than 0.9M.

In some embodiments, the rated load M of the elevator is determined that the performance of the overload protection device is not satisfactory if an alarm is generated when the overload protection device continuously unloads the load to 0.8M after the alarm is generated.

In the existing loading process, unbalance loading can be caused if the loading position is not reasonable, and further, the result of the inspection is not accordant with the actual result. More importantly, if the loading is not reasonable, the structural performance of the elevator can be damaged, such as the deformation of a car frame and the like. According to the application, the loading module 20 which is specially arranged can be better fixedly connected with the guide rail 11, offset load force cannot be generated, and loading balance can be ensured. In addition, the loading module 20 is arranged at the bottom of the car 10, and the simulation condition is more real. Furthermore, loading module 20 commonality is good, as long as possess elevator guide rail 11, just applicable the utility model provides a loading module 20. Compared with the existing detection facilities which need to be installed by modifying the pit bottom or the car 10 and other parts with special structures, the loading module 20 is convenient to install and wide in applicability.

Further, in an embodiment, the attitude signal generated by the car attitude detection module 40 can reflect the running state of the car 10 during the loading process in real time, so as to indicate whether the loading is normal or not. When the control terminal 50 receives the attitude signal indicating the abnormality, it can intervene and adjust the loading process in time. For example, the loading load is adjusted, or the load output of the loader 23 at a certain position is adjusted, so as to ensure the balance and safety of loading, thereby ensuring the authenticity of the detection result.

Because the signal acquisition module 30 is disposed in the car 10 for detecting whether the alarm device generates an alarm action, a feedback signal can be generated more accurately and more timely, so that the control terminal 50 can make a correct judgment whether the performance of the overload protection device meets the requirement. Compared with the mode of manually receiving the alarm signal, the mode of arranging the signal acquisition module 30 enables the floor door and the car door of the car 10 to be closed in the whole detection process, and detection personnel do not need to be close to the car 10, so that the detection process is safer, and the detection result is more real.

In some embodiments, the holder 21 may have another configuration, as shown in fig. 6. The clamper 21 in this embodiment includes a clamping cylinder 221 and a guide bar 222 connected to the clamping cylinder 221. The grip cylinder 221 is fitted to an end of the guide rail 11. The holding cylinder 221 specifically includes a cylinder bottom 223 and a cylinder body 224 extending from the cylinder bottom 223. The bottom 223 abuts against an end of the elevator guide rail 11, and the barrel 224 circumferentially surrounds the elevator guide rail 11. The guide bar 222 is connected to the barrel 224 at one end, for example, by bolts or the like in a conventional manner, and is connected to the loader 23 at the other end. The connection of the guide rod 222 to the loader 23 can be made by an intermediate piece, or can be directly connected to the housing of the loader 23. This type of gripper 21 is simpler to install and also more versatile, and this type of gripper 21 can be applied as long as the elevator has guide rails 11.

Fig. 7 shows another embodiment, which differs from the embodiments of fig. 1 and 6 in that the gripper of fig. 7 is of two types, namely both the gripper of fig. 1 and the gripper of fig. 6. Hereinafter, for convenience of description, the holder of fig. 1 is represented by a first holder, and the holder of fig. 6 is represented by a second holder. The specific configurations of the first holder and the second holder are as described above and will not be described herein. Wherein the guide bar 222 of the second gripper is connected with the clamping piece 211 of the first gripper.

The performance detection system and the detection method can also be applied to other safety protection devices of the elevator. For example, referring to FIG. 8, a situation is shown where the performance detection system is used to detect that the safety protection device is a buffer 16. The buffer 16 is disposed below the car 10, typically at the hoistway pit. In this case, the loader 23 of the loading module 20 is disposed between the clamper 21 and the buffer 16, and loads the buffer 16 with a pushing force. The detection system and method may be used to perform a vertical loading test of the buffer 16 to determine whether the buffer 16 is active and the associated electrical switch is active. For the installation, debugging and detection process of the detection system, reference may be made to the above description about the performance detection of the overload protection device, which is not described herein again.

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.

Claims (10)

1. A loading module for providing a load during performance testing of an elevator overload protection device, comprising:

the clamp is fixedly connected with the elevator guide rail and positioned at the bottom of the car, and the clamp circumferentially surrounds the elevator guide rail along the elevator guide rail;

the loader is connected between the elevator car and the clamp holder and loads the elevator car; and

and the loading data collector is used for collecting the loading data of the loader.

2. The loading module of claim 1, wherein the clamp includes a first clamp and a second clamp, the first clamp including a clamp member and a counter lock lever pivotally coupled to one end of the clamp member, the counter lock lever being relatively pivotable with respect to the clamp member and being lockingly coupled to the other end of the clamp member to grip the elevator guide rail, the clamp member being coupled to the loader; the second holder comprises a holding barrel and a guide rod connected with the holding barrel, the holding barrel comprises a barrel bottom and a barrel body extending out from the barrel bottom, the barrel bottom is abutted to the end part of the elevator guide rail, the barrel body is circumferentially wrapped on the elevator guide rail, one end of the guide rod is connected with the barrel body, and the other end of the guide rod is connected with the clamping piece.

3. The loading module of claim 2, wherein the elevator guide rail is T-shaped in cross-section, the first clamp further comprising two sliding members, one of the sliding members being slidably connected to one end of the clamping member and the other sliding member being slidably connected to the other end of the clamping member, the counterbalancing locking lever being pivotally connected to one of the sliding members and being capable of being lockingly connected to the other sliding member to hug the elevator guide rail.

4. The loading module of claim 1, further comprising at least two linkages corresponding in number to the number of elevator guide rails, the linkages connecting between adjacent two of the linkages.

5. The loading module of claim 1, wherein the loading data collector comprises a force sensor for detecting an output load of the loader and generating a detection signal, and a data analyzer for collecting the detection signal of the force sensor.

6. The loading module of claim 1, further comprising a connector connected between the car bottom and the loader.

7. The load module of claim 1, wherein the number of loaders is plural, and a plurality of loaders are attached to each gripper.

8. The loading module of claim 1, wherein the loader further comprises a power source mounted on the vehicle body structure having a mobility function.

9. A load module according to claim 8, wherein the grippers, load data collector are placed on the body structure during transportation of the load module.

10. An elevator overload protection device performance detection system, characterized by comprising:

a loading module according to any one of claims 1-9 for loading and generating loading data for an elevator overload protection device arranged on top of a car, on the bottom of a car or in an elevator machine room;

the signal acquisition module is arranged at the elevator control cabinet and/or in the elevator car and used for generating a feedback signal according to whether the elevator overload protection device gives an alarm or not;

the car attitude detection module is arranged in the car and used for detecting the car attitude and generating an attitude signal; and

and the control terminal is used for controlling the loading module to load and acquire loading data, and receiving the feedback signal and the attitude signal, adjusting the loading according to the attitude signal, and judging the performance of the elevator overload protection device according to the loading data and the feedback signal.

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