Detailed explanation of elevator installation method in vauxhall

With the progress of science and technology and the development of society, elevators have now become a part of society. It is precisely because of the appearance of elevators that people can go up and down stairs conveniently and save travel time. It is also an essential aspect for friends engaged in related elevator industry to learn how to install elevators. Let Tutu first introduce the installation method of vauxhall elevator for everyone, so that everyone can know more about the elevator!

Introduction of elevator installation mode in vauxhall;

First, the computer room

1. 1? Equipment and devices unrelated to elevators are arranged in the machine room.

In order to ensure the overall beauty of buildings, some real estate companies set pressure pipes or fire hydrants and fire pipes in the machine room instead of laying them along the external walls. If the pipeline breaks, the overflowing water will flow into the machine room, the electrical components in the control cabinet may be burnt out, and some water will also flow into the shaft from the floor hole, resulting in the damage of the car and the main board of the elevator system due to short circuit, which will bring serious economic losses. Therefore, all relevant units should be familiar with the national management regulations and standards for elevator manufacturing and installation, and fully understand the requirements of elevator installation for related projects.

1.2? Civil engineering is too slow or power cabinet assembly does not meet the use requirements.

A considerable part of civil electrical construction can't keep up with the elevator installation period, and the proportion of elevators with temporary power supply is very large, which delays the supervision and inspection time of elevator installation and prolongs the construction period; Some main power supply capacity is too small. For example, the power of an elevator is 15kw, the rated speed is 1.5m/s, the lifting height is 60m, and the rated current is 4 1A, but the switching capacity of the main power supply is only 32A, which easily leads to the failure of the power supply system and the elevator can't run safely.

1.3 the ambient temperature and ventilation facilities of the elevator machine room do not meet the requirements.

Most elevator machine rooms are located on the top floor of the building, and some design units do not set windows on the outer wall of the machine room or as few as possible in pursuit of architectural beauty, which leads to insufficient ventilation and lighting in the machine room. GB7588—2003 Safety Code for Elevator Manufacture and Installation requires that the elevator machine room should be properly ventilated, and the ambient temperature of the machine room should be kept between 5-40 degrees. The exposure time of Sun Long in summer and the heat generated by elevator operation often make the ambient temperature of elevator machine room exceed the requirements of national standards, which increases the failure rate of elevator operation and shortens the service life of products. Although many construction units have installed exhaust devices in the computer room, they still feel that the effect is not good. Therefore, in addition to the beautiful appearance of the building, civil engineering design should also pay attention to the requirements of ventilation, lighting, heat insulation and rain-proof conditions of the elevator room. When installing the exhaust device, an air inlet (such as a louver) should be opened on the other wall of the computer room to make air convection, so as to improve the ambient temperature of the computer room.

1.4 The machine room is too close to the water supply equipment.

In order to save space, some buildings put the water supply tank and central air conditioning cooling tower near the computer room. For example, a hotel places a cooling tower next to the computer room, less than one meter away from the computer room window. When the temperature is too high in summer, wet steam enters the computer room through the window, forming condensed water on the top plate, resulting in excessive humidity in the computer room.

1.5 The effective area of elevator machine room and shaft is not enough.

When designing the machine room and hoistway, some designers did not carefully examine the civil engineering drawings provided by the elevator manufacturer, or designed according to the structural diagram of a certain brand of elevator, but actually ordered another brand of elevator. It is often found that the effective area of the machine room and hoistway is too small when the elevator is installed, which leads to the space not meeting the requirements of article 6.3.2 of GB7588-2003 on the size of the machine room, which is not conducive to the inspection and maintenance of emergency operation and maintenance personnel. Therefore, the civil drawings of the machine room and hoistway should be drawn according to the same standard drawings provided by professional elevator manufacturers, combined with different structures of the elevator hoistway of the building (such as brick structure, concrete structure, brick-concrete structure or steel-reinforced structure). It's best to determine which manufacturer's elevator to use first, so as to avoid incompatibility between the designed elevator and civil engineering.

Second, the axis

2. 1 Improper emergency unlocking position

In order to emphasize the beauty, most users decorate the door head of the layered door with marble or decorations. At this time, pay attention to the location of emergency unlocking and have enough unlocking space. 7.7.3.2 in GB7588—2003 Safety Code for Elevator Manufacture and Installation stipulates that "each landing door should be able to be opened from the outside with a key matched with the unlocking triangle hole specified in Appendix B". Some units neglected the emergency unlocking position, only to find that there was not enough unlocking space after installation, which caused unnecessary trouble.

2.2 The sill of the door on the second floor is lower than that of the decorative floor.

Article 4.4.2 of GB10060-93-93 Code for Acceptance of Elevator Installation "The sill of landing door should be 2 ~ 5 mm higher than the decorated floor." However, some elevator installation units are not in harmony with the ground decoration units, and there is no uniform requirement for the floor finish elevation of each floor, resulting in the floor bottom beam being the same height as or lower than the decoration ground. Article 7.4. 1 in GB7588—2003 gives us the following explanation: "There should be a slight slope in front of the window sill of each floor to prevent water from flowing into the shaft during washing and sprinkling." Water is a big taboo for elevator safety. Water enters the shaft along the gap between the landing door and the car sill, which is easy to cause electrical short circuit.

2.3 threshold strength should match the use environment.

Article 7.4. 1 in GB7588—2003 "The entrance of each landing door shall be equipped with a sill with sufficient strength to bear the load entering the car through it". For freight elevators that often go in and out with heavy loads, the sill should be strengthened without affecting the operation to ensure the impact load borne by the sill. Steel plates can be added at the front end of the sill, the brackets and supports should be welded firmly, and the welds should be continuous on both sides (spot welding is not allowed). Some units ignore the future use environment when installing elevators in the conventional way, which leads to the damage or even scrapping of the landing sill in a short time.

2.4 Distance between counterweight and buffer

GB10060-93-93 Code for Acceptance of Elevator Installation requires a certain distance between the collision plate of the car and counterweight and the top surface of the buffer. When installing a new ladder, the manufacturer is equipped with an adjusting block to adjust the distance between the counterweight and the buffer, although there are various forms. In order to save time, some elevator installation units did not make full use of the adjustment block. We know that the newly manufactured steel wire rope will have a certain elongation after being used for a period of time. If the wire rope head is fixed by Babbitt casting at this time, the rope must be cut to meet the counterweight distance. It can be seen from this that although the weight distance meets the requirements at the time of acceptance, if the future use situation is not fully considered, it will bring unnecessary trouble to users.

Third, the influence of car decoration on elevator performance parameters

The balance coefficient of elevator is an important parameter related to the running performance of elevator and the output power of driving device. After some elevators were installed and debugged, the car was renovated, but the balance coefficient was not readjusted. Users stick composite decorative boards on the car wall, lay marble on the car floor, and some even install air conditioners on the roof. Car decoration has undoubtedly changed the design area of the elevator, changed the weight of the car, and affected the traction condition and balance coefficient, which made the anti-skid coefficient efa=T 1/T2 unsatisfactory, and also affected whether the capacity of safety tongs and buffers matched.

In most elevator technical documents, there is no clear data about the allowable range of car weight and its change, which leads to the lack of safety technical basis for this decoration behavior. Some increase the weight of the car due to decoration, so as to reduce the rated load of the car to ensure the safe operation of the car, while others blindly increase the balance weight to keep the balance coefficient and rated load of the car unchanged, ignoring the change of elevator traction capacity and the effective capacity of safety tongs, buffers, traction ropes and other components, resulting in safety hazards, which are not worth the loss.

Four, the emergency alarm device Settings

The setting of emergency alarm device in GB7588—2003 is very general, which requires using intercom system or similar device to keep in touch with rescue service. At present, some elevator car intercom systems are only connected with the machine room. Although they meet the acceptance criteria, they are not practical. As we know, most computer rooms are not on duty at ordinary times, so it is difficult to communicate with the trapped people in time once they encounter the elevator, which affects the efficiency of emergency rescue. If this happens during acceptance, users are advised to establish a three-way call.

In order to ensure the personal safety of passengers and improve the safety level of elevators, it is very necessary to establish a perfect elevator intercom system from a practical point of view. The elevator intercom system can connect the elevator intercom extension with the control center or the duty room, and realize the tripartite communication among the elevator car, the elevator machine room and the control center. The functions of the control center and the machine room are the same. The elevator machine room can call the car, and the control center can also call the car, which effectively solves the problem of setting the emergency alarm device. (pay attention to voice interference, introduce emergency power from the machine room, and don't connect 220V power from the top of the car. )

Verb (abbreviation of verb) pit

5. 1 Floor strength of suspended pit

When someone can enter the space under the pit, such as basement, garage, passage, etc. The strength of the pit bottom should be able to bear the load of not less than 5000N/㎡, and there are other measures. Clause 5.5 in GB7588—2003 not only requires that the strength of the pit bottom meet the design bearing capacity, but also requires that a counterweight buffer be installed on the solid pile pier extending to the solid ground (or below the counterweight operation area). However, some civil engineering design units do not understand the requirements of national specifications for elevator installation and do not consider taking protective measures. The inspection found it difficult to rectify. Therefore, this kind of problem can be avoided if designers understand the requirements of national specifications for elevator installation.

5.2? Seepage and waterproofing of foundation pit

Article 5.7.3. 1 in GB7588—2003 stipulates that the pit shall not be used as a water storage pit, and there shall be no water leakage or seepage in the pit after the installation of guide rail, buffer and fence. Some civil construction units did not pay enough attention to this, did not do a good job in waterproof treatment, and water leakage occurred, which caused corrosion of elevator mechanical parts and decreased insulation performance of electrical parts.

Well, the above is the installation method of vauxhall elevator briefly introduced by Rabbit. I hope everyone can know the principle when using the elevator. In fact, elevators are closely related to us. Besides using the elevator safely, we should also remember to maintain it. For example, when we are overloaded, we should remind others, and then take the initiative to take the next elevator, so as to prevent accidents and maintain the elevator, starting from me.

Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~