As a vertical transport, elevators are inseparable from people's daily life. At the same time, elevators are also an important category of government procurement. More than ten projects are open tendered almost every day. How to purchase an elevator can not only save time and effort, but also provide value for money and avoid disputes. It is a question that every procurement person and agency needs to consider. In fact, if you want to meet the above requirements, you only need to pay attention to some small details throughout the purchase. In this issue, we will introduce ten details in accordance with the procurement process.
First, the type of elevator
During the planning period of the building, the purpose of the building should be clearly stated, because the types of elevators used by hotels, restaurants, office buildings, hospitals, residential buildings, or industrial and mining enterprises have different types of elevators, and once they are determined, It is very troublesome to change again. After the use of the building is determined, passenger flow analysis is conducted based on factors such as the building area, floor height (floor height), flow of people in and out of the building, location of the elevator in the building, etc., in order to determine the elevator speed (lowest speed to meet the fire landing requirements) and load capacity ( The load of the elevator car when fully loaded), the number of required elevators, the type of machine room (large machine room, small machine room, machine-roomless room), traction machine type (traditional turbo worm and new permanent magnet synchronization).
Second, the plan approval after the purchase began
Procurement time suggests that purchases begin after the planning approval. After the elevator type, speed, capacity, number of stations, number of landings, total trip height, etc. are determined, the blueprint of the architectural design department can be entrusted. Regarding the part of elevator construction (mainly the elevator hoistway), the design department is usually specialized. The elevator manufacturer provides standard civil engineering drawings of the same type, and combines the different structures of the elevator ladders of the building, such as brick structures, concrete structures, brick-concrete structures, or steel structures, to draw elevator civil drawings. This size is considered universal and can meet the needs of general manufacturers. However, there are differences in shaft design dimensions, engine room and pit requirements of different elevator manufacturers. If manufacturers are determined in advance, designing according to the drawings of selected manufacturers can reduce the waste of use space and also reduce the troubles of future construction. If the hoistway is large, the area will be wasted; if the hoistway is small and some manufacturers cannot meet it at all, they must press non-standard production and increase a lot of construction costs.
Third, a reasonable choice of manufacturers and brands
There are also grades among the elevator manufacturers and the eight brands in the world. There are the First Corps and the Second Corps. There are also many domestic elevator companies. The elevator is also a penny. According to their own budget and project positioning to choose the same basic unit bids. Can also choose a large area, and finally determine which grade to determine according to the degree of difference. Elevators also have dealers and agents. Their prices will be high, but strong ones can be funded. Manufacturers are usually chosen so that quality is guaranteed and services can be found. However, the payment terms are more stringent. Industry practice is to require prepayment, full payment or basic full payment before shipment. The elevator factory shall have the necessary business licenses, elevator production licenses, qualification certificates for the construction enterprises of the construction department to which it belongs, and certification documents for the installation of safety certificates.
Four, divided interface to facilitate the transfer
The interface is divided into elevator installation and general contractor construction units (civil engineering and installation), fire control units, weak electricity units are all closely related, the interface between them should be clearly defined, and the construction process should be well handled.
Fifth, due to the need to select the elevator function
Each elevator factory has an elevator function table, and the purchasing personnel must understand its function. Some functions are mandatory and cannot fall. Some functions are necessary for elevators, and they are not selected. Some functions are auxiliary, not necessary, you can choose. According to the project location selection function. The more functions you have, the higher the price, but it's not necessarily practical. Especially for barrier-free elevators and residential projects, there is no mandatory requirement for completion and acceptance. Normal practice is not considered. For stretcher elevators, design specifications have mandatory requirements. For public construction projects, accessibility features need to be fully considered. Elevator button arrangement, to consider the convenience and beauty, but also consider the sensitivity of some people and foreigners to some numbers, 13 and 14, etc. use letters instead. When bidding, the elevator manufacturer is required to quote a variety of options for reference when selecting the model for calibration.
Six, clear prices to avoid disputes
The full price of the elevator project shall include all equipment costs, transportation costs, tariffs (into the middle ladder), insurance costs, installation fees, commissioning fees, and the manufacturer's commitment to the owner for pre-sales, after-sales warranty and other related costs, but here need to explain, in the manufacturers When the construction department delivers to the property owner the elevators that have been installed and accepted and qualified, some late-stage costs should be borne by the owners, such as elevator registration fees, installation acceptance inspection fees, fire (equipment) inspection fees, and elevator annual inspection fees. The above-mentioned related expenses, supply and demand sides should be implemented as much as possible in the contract, and clarifying the responsibilities of both parties in written form is the best way to avoid disputes. During the bidding, the elevator manufacturers are required to report the price of the wearing parts and the cost of maintenance. The cost of this department involves the cost of future operation and the property company is concerned.
Seventh, overall planning and delivery time
The owner can request the manufacturer of the elevator to specify the delivery date for the progress of his own building construction. It is now generally required for the factory to provide two and a half months to four months, and the elevator equipment of the general building should be capped at the top of the building. It is advisable to dismantle the outdoor tower crane soon. If the arrival arrives before this, it is bound to cause storage and storage problems, and after that, there will be costs such as secondary lifting and handling. Usually, the elevator factory will have a period of free storage for a certain period of time. If it is not delivered after this time, the factory will charge a certain fee.
Eight, three elevators to install a good link
A good elevator must control the following three major links (also called three phases).
First of all, the quality of elevator equipment products requires elevator manufacturers to guarantee the quality of their products. Since elevators belong to special equipment, the production quality of enterprises with production certification will not usually have big problems, but only the durability and stability will be certain. difference.
Second, we must pay attention to the installation and commissioning process, and the quality of installation is very important. The installation team of each elevator plant is basically its own or a long-term cooperation. There are also assessments, and the commissioning is usually arranged by the elevator plant.
Third, after-sales service, after the elevators have been sold, all professional maintenance teams are responsible. The elevator factory will sign the maintenance contract with the property company, which guarantees the continuity of the elevator plant's work. The reasonableness and timeliness of maintenance management ensure the quality of elevator use. Therefore, as early as the beginning of the 1990s, the State issued a red-headed document from the Ministry of Construction. It clearly stipulates that elevator products use the “one-stop” service provided by the manufacturer, that is, the elevator manufacturer will provide warranty, installation, and maintenance on the elevator equipment it produces. Etc.
Nine, elevator acceptance can not be careless
Elevators are special equipment. The State Bureau of Technical Supervision has an acceptance procedure, but they are usually responsible for safety. Therefore, the owner and the supervising unit must strictly carry out unpacking acceptance, process monitoring, concealed inspection and acceptance, and functional acceptance. It must be checked and accepted according to the elevator acceptance criteria and the functions determined in the contract, and the acceptance of an elevator and an elevator.
Ten, special people control elevator security
The elevator installation and commissioning are completed, internal acceptance is completed, and the conditions of use are met. According to regulations, elevators are not allowed to be used without inspection by the Technical Supervision Bureau, but usually the elevator has been dismantled at this time, and other work of the general contracting unit has not been completed and an indoor elevator is required. The elevator unit signs the agreement with the general contractor. The elevator unit arranges the elevator to open the elevator. The general contractor uses the elevator according to the requirements of the elevator unit and bears the cost. After the completion of the project, do a full inspection and maintenance. After the completion of the project's overall acceptance, the elevator company is handed over to the maintenance unit and the total package is handed over to the property company for management.
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