CN-224226420-U - Automatic loading device for elevator load test

CN224226420UCN 224226420 UCN224226420 UCN 224226420UCN-224226420-U

Abstract

The utility model relates to the technical field of elevator load test, in particular to an automatic loading device for an elevator load test, which comprises a folding water bag, weighing equipment, a three-position four-way electromagnetic reversing valve, a water pump module and a controller circuit. When loading and unloading are carried out, operators only need to enter and exit the elevator car when the water bag device is placed and removed from the elevator car and the water pipe is connected and removed, so that the danger that the frequent entering and exiting of the elevator car by the operators in the loading and unloading process possibly causes shearing is effectively avoided, and the safety in the loading and unloading process is high.

Inventors

ZHANG RUI
ZHANG XUELUN
TONG YIZHI
ZHOU GAOPING
FAN CUNLIN
LI WANCHUN
PAN CHUNYANG
XIE FEI

Assignees

重庆品智检验检测有限公司

Dates

Publication Date: 20260512
Application Date: 20250623

Claims (8)

1. An automatic loading device for elevator load test, comprising: a water storage tank (1); A collapsible water bag (2) for applying a load to the elevator, the collapsible water bag being placed in the elevator; The weighing equipment (3) is used for collecting the real-time load of the folding water bag, and the weighing equipment (3) is arranged below the folding water bag; The three-position four-way electromagnetic reversing valve (4) is used for switching the flow direction of the pipeline, and the three-position four-way electromagnetic reversing valve (4) is connected with the folding water bag (2) and the weighing equipment (3) through the pipeline; The water pump module is used for driving water flow in the pipeline and is connected with the three-position four-way electromagnetic reversing valve (4) through the pipeline; The controller circuit is connected with the weighing equipment (3), the three-position four-way electromagnetic reversing valve (4) and the water pump module, and is used for automatically controlling the three-position four-way electromagnetic reversing valve (4) and the water pump module according to the real-time load and a set target load range in an automatic mode so that the real-time load is in the set target load range, or is used for controlling the three-position four-way electromagnetic reversing valve (4) and the water pump module based on an externally input switching signal in a manual mode.
2. The automatic loading device for elevator load test according to claim 1, wherein the three-position four-way electromagnetic directional valve (4) comprises a first working end, a second working end, a third working end and a fourth working end; The water storage tank (1) is connected with a first working end of the three-position four-way electromagnetic directional valve (4) through a water pipe, a second working end of the three-position four-way electromagnetic directional valve (4) is connected with a water inlet end of the water pump module through a water pipe, a water outlet end of the water pump module is connected with a third working end of the three-position four-way electromagnetic directional valve (4) through a water pipe, and a fourth working end of the three-position four-way electromagnetic directional valve (4) is connected with the folding water bag through a water pipe; When the first working end is communicated with the second working end and the third working end is communicated with the fourth working end, the water pump module drives water in the water storage tank (1) to flow to the folding water bag (2), and when the second working end is communicated with the fourth working end and the first working end is communicated with the third working end, the water pump module drives water in the folding water bag (2) to flow to the water storage tank (1).
3. An automatic loading device for elevator load test according to claim 1, characterized in that the water pump module comprises a water pump (5) and an electric motor (6), the power shaft of the electric motor (6) being connected to the water pump (5) for driving the water pump (5) in operation.
4. The automatic loading device for elevator load test according to claim 1, wherein the controller circuit comprises a main loop, a water pump control loop, a switching control loop and a PLC integrated controller; The main loop comprises an inverter, wherein the input side of the inverter is connected with a first manual switch and a second manual switch in series and then externally connected with a direct current power supply, and the output side of the inverter is connected with a first relay contact in series and then connected with the water pump module; The water pump control loop is connected with the main loop and is used for controlling the working state of the water pump module; The switching control loop is connected with the main loop and the PLC integrated controller and is used for controlling the working state of the three-position four-way electromagnetic reversing valve (4).
5. The automatic loading device for elevator load test of claim 4, wherein the water pump control loop comprises a first relay coil for controlling the first relay contact, a motor start button, and a motor stop button; One end of the first relay coil is sequentially connected with a motor start button and a motor stop button in series and then is connected with the positive electrode of an external direct current power supply; The motor starting button is also connected with a first relay contact controlled by the first relay coil in parallel; the motor start button is a normally open button, and the motor stop button is a normally closed button.
6. The automatic loading device for elevator load test according to claim 4, wherein the switching control loop comprises a loading electromagnet, a load shedding electromagnet, a loading control electromagnet, and a load shedding control electromagnet; one end of the loading electromagnet is connected with the loading control contact in series and then connected to the positive electrode of an external direct current power supply, and the other end of the loading electromagnet is connected to the negative electrode of the external direct current power supply; One end of the load shedding electromagnet is connected with the load shedding control contact in series and then is connected to the positive electrode of an external direct current power supply, and the other end of the load shedding electromagnet is connected to the negative electrode of the external direct current power supply; One end of the loading control electromagnet is sequentially connected with the PLC, the load-increasing and load-decreasing start button and the load-increasing and load-decreasing stop button in series and then connected to the positive electrode of the external direct current power supply, and the other end of the loading control electromagnet is connected to the negative electrode of the external direct current power supply; One end of the load shedding control electromagnet is sequentially connected with the PLC, the load shedding start button and the load shedding stop button in series and then is connected to the positive electrode of an external direct current power supply, and the other end of the load shedding control electromagnet is connected to the negative electrode of the external direct current power supply; The load and unload starting button is a normally open button, the load and unload stopping button is a normally closed button, the load and unload starting button is also connected with a second relay contact in parallel, the second relay contact is controlled by a second relay coil, one end of the second relay coil is sequentially connected with the load and unload starting button in series, the load and unload stopping button is connected to the positive electrode of an external direct current power supply, and the other end of one end of the second relay coil is connected to the negative electrode of the external direct current power supply.
7. The automatic loading device for elevator load test of claim 6, further comprising a load start button and a load shedding start button; The loading starting button comprises a first normally open contact and a first normally closed contact which are synchronously locked, the first normally open contact is connected in series with a branch where the loading electromagnet is located, the first normally closed contact is connected in series with a branch where the loading control electromagnet is located, and one end of the loading electromagnet is connected with one end of the loading control electromagnet; The load shedding starting button comprises a second normally open contact and a second normally closed contact which are synchronously locked, the second normally open contact is connected in series with a branch where the load shedding electromagnet is located, the second normally closed contact is connected in series with a branch where the load shedding control electromagnet is located, and one end of the load shedding electromagnet is connected with one end of the load shedding control electromagnet.
8. The automatic loading device for elevator load test according to claim 1, wherein the folding water bag (2) comprises a tray (21), a guide rod (22) arranged at the center of the tray, and a telescopic water bag (23) sleeved on the guide rod (22); the telescopic water bag (23) is provided with a quick-mounting check pipe joint (24), and the telescopic water bag (23) is connected with a water pipe through the quick-mounting check pipe joint.

Description

Automatic loading device for elevator load test Technical Field The utility model relates to the technical field of elevator load test, in particular to an automatic loading device for an elevator load test. Background When the elevator is installed, debugged and checked, load tests are carried out to test and verify the performance of the elevator, so that the heavy objects are required to load the elevator car, and the heavy objects are required to be moved near the landing door and moved in and out of the elevator car, so that the weight of the heavy objects cannot be too heavy, and the loaded heavy objects basically consist of a plurality of small objects. This loading approach has the following problems: 1. In order to ensure the accuracy of the load, the weights (except the standard weights) should be measured one by one, and the measurement work is complicated, so the actual situation on site is basically not measured but estimated, and therefore, the accuracy of the loaded weight has to be questioned; 2. The elevator has the advantages that the loading weight is moved into the elevator car and moved out of the elevator car by manpower, the labor intensity is high, the efficiency is low, the floor and the wall of the elevator car are easy to damage, the performance reliability of the elevator is unknown before the elevator is subjected to a load test, and if the performance of the elevator does not meet the expected requirement, serious accidents of shearing of operators entering and exiting the elevator car caused by sliding in the loading process can easily occur. Moreover, the additional load inherently present during loading causes the actual load of the elevator to exceed the expected load, further exacerbating the risk of a roll-over shear event. For example, when an elevator is loaded to 125% rated load, loading personnel need to enter and exit the elevator car, which causes the elevator load to increase the weight and impact load of a person at 125% rated load, the load is not small, the rated load number of the elevator is assumed to be 13, and the weight of a person is 7.7% of rated load, so that the actual load of the elevator loaded to 125% of rated load is at least 132.7% of rated load, and especially when the rated load of the elevator is smaller, the percentage of additional load is higher. Therefore, the existing elevator load testing means have difficulty in automatically and precisely controlling the load in addition to requiring manual operation. Disclosure of Invention In view of the above, the present utility model aims to provide an automatic loading device for elevator load test, so as to solve the technical problems in the background technology. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model relates to an automatic loading device for an elevator load test, which comprises a water storage tank; a water storage tank; The folding water bag is used for applying load to the elevator and is placed in the elevator; The weighing equipment is used for collecting the real-time load of the folded water bag and is arranged below the folded water bag; The three-position four-way electromagnetic reversing valve is used for switching the flow direction of the pipeline and is connected with the folding water bag and the weighing equipment through the pipeline; The water pump module is used for driving water flow in the pipeline and is connected with the three-position four-way electromagnetic reversing valve through the pipeline; And the controller circuit is connected with the weighing equipment, the three-position four-way electromagnetic reversing valve and the water pump module, and is used for automatically controlling the three-position four-way electromagnetic reversing valve and the water pump module according to the real-time load and the set target load range in an automatic mode so that the real-time load is in the set target load range, or is used for controlling the three-position four-way electromagnetic reversing valve and the water pump module based on an externally input switch signal in a manual mode. In an embodiment of the present application, the three-position four-way electromagnetic directional valve includes a first working end, a second working end, a third working end and a fourth working end; The water storage tank is connected with the first working end of the three-position four-way electromagnetic reversing valve through a water pipe, the second working end of the three-position four-way electromagnetic reversing valve is connected with the water inlet end of the water pump through a water pipe, the water outlet end of the water pump is connected with the third working end of the three-position four-way electromagnetic reversing valve through a water pipe, and the fourth working end of the three-position four-way electromagnetic reversing valve is connected with the folding water bag thro