41results about How to "Safe and convenient maintenance" patented technology

A ceiling fan easy for maintenance includes a motor housing, which is formed with an accommodating space having a motor provided therein. The motor is connected with a blade unit, and a switch box is provided beneath the blade unit and received therein with a driver, which is electrically connected with the motor. By so designing, in case the driver causes trouble and damage and need to be repaired, a maintenance man only need to open the switch box beneath the motor housing and the blade unit to carry out maintenance and dose not need to disassemble the motor housing. Thus, when doing maintenance work at altitude, the maintenance man can keep away from the blade unit of the ceiling fan, thus able to carry out maintenance of the ceiling fan with great safety and convenience.

The invention belongs to the technical field of anti-corrosive coatings, and particularly relates to an anti-corrosive coating for concrete surface and a preparation method thereof. The anti-corrosive coating for concrete surface is divided into a base coating and a surface coating, wherein the base coating is composed of a first component and a second component, the surface coating is composed of a component A and a component B; the first component and the component B both use epoxy resin as a base material; the second component and the component B are respectively composed of a curing agent and a curing promoter. While in use, the first component and the second component are uniformly mixed according to a proportion to obtain the base coating; and the component A and the component B are uniformly mixed according to proportion to obtain the surface coating. Compared with the prior art, the anti-corrosive coating for concrete surface has features of stable performance, strong adhesion, long service life, good corrosion prevention effect, green environmental protection, good decorative effect and simple production process, and can be used in highway bridges, offshore structures, factory buildings or the like. After the anti-corrosive coating is coated once, the high temperature resistance, the acid and alkaline corrosion resistance, and the service life are greatly improved.

The invention provides a bogie replacing device. The bogie replacing device comprises a first bearing part for bearing a bogie, two supporting columns arranged oppositely and a first cross beam erected on the two supporting columns, wherein a vehicle body supporting assembly for supporting a vehicle body is arranged on the first cross beam; and bogie lifting assemblies for lifting and dropping thefirst bearing part are arranged on the supporting columns. The bogie replacing device has the beneficial effects that the bogie replacing device has relatively good integrity and is extremely convenient to install and dismantle by arranging the vehicle body supporting assembly and the bogie lifting assemblies on the first cross beam and the supporting columns; in addition, as parts of the device,which need to be frequently overhauled and maintained, are mainly positioned above the ground, the bogie replacing device is safe and convenient to overhaul and maintain, the influence of undergroundhumid environments on the device can be avoided, and the reliability of the device is improved.

The invention relates to a bagged cement automatic bag-opening and discharging device for a nuclear power station. The bagged cement automatic bag-opening and discharging device for the nuclear power station comprises a sealing box, a conveying mechanism, a controller and a starting button. The bagged cement automatic bag-opening and discharging device for the nuclear power station is characterized by comprising a vertical lifting door, a cement bag recycling door and a cement exit. A cutting knife is fixed on the inner surface of the vertical lifting door, and the vertical lifting door is driven by a dynamic mechanism. An unpowered roller way and a belt conveying machine are respectively arranged inside and outside the vertical lifting door, and a guide rail is arranged on the upper portion of an outer shell. A motor can move on the guide rail through that a steel wire rope drags a bag-grabbing mechanism. A fine dust collecting machine is arranged on the top of the outer shell, signal input ends of the controller are respectively connected with signal output ends of a photoelectric sensor, a limiting switch and the starting button. Output ends of the controller are respectively connected with control ends of the belt conveying machine, the dynamic mechanism and the motor. The bagged cement automatic bag-opening and discharging device for the nuclear power station is simple in structure, low in cost, small in size, reliable in sealing, safe and convenient to use and maintain, and capable of meeting requirements for environmental protection of the nuclear power station.

The invention discloses a cable connection auxiliary apparatus. The cable connection auxiliary apparatus comprises a power-supply-end cable and a power-utilization-end cable which are electrically connected through a cable plug, wherein a cable bearing bracket is arranged at the power-utilization equipment end connected with the power-utilization-end cable; a clamping and fixing apparatus used for fixing the power-supply-end cable is arranged at the outer end of the cable bearing bracket; the cable bearing bracket is equipped with an anti-falling-off transitional auxiliary lifting hook; the power-supply-end cable is provided with an anti-falling-off transitional connection rope connected with the transitional auxiliary lifting hook; and the power-supply-end cable is also provided with a pulling force sensor used for monitoring the state of cable. The cable connection auxiliary apparatus is provided with the clamping and fixing apparatus used for fixing the power-supply-end cable, so that the problem existing in the safe connection of the connecting parts of the cable is solved; meanwhile, for realizing convenient connection and replacement and maintenance of the cable, a transitional connection apparatus consisting of the transitional connection rope and the transitional auxiliary lifting hook is arranged between the connecting parts, so that the connection and the maintenance of the cable becomes safer and more convenient; and in addition, the clamping and fixing apparatus can prevent the cable from being damaged, and fixation requirements of multiple kinds of different cables can be satisfied as well.

The invention relates to a cable plug which is made of a full ceramic or full glass material, formed by combining equal parts of 1 / 2 or 1 / 3 single bodies into a whole, and shaped as a conical sleeve with a T head, wherein the outer diameter R1 of the conical sleeve is slightly smaller than the inner diameter of a protective tube; the inner diameter R2 of the conical sleeve is slightly greater than the diameter of the cable; the outer diameter R3 of the T head is slightly greater than the outer diameter of the protective tube; and a cone angle b is 5-15 degrees. The cable plug can be used for performing fire prevention, preventing fire from spreading after firing, preventing small animals from burrowing into the protective tube to further bite the insulating layer of the cable, and preventing rain erosion and preventing the fixed cable from shaking in the protective tube, a wall body and equipment. The cable plug can be widely applied to parts which are needed to be protected by the protective tube or neccessarily penetrates through the wall body and neccessarily enters into equipment such as a high-voltage switch cabinet, a low-voltage switch cabinet and a control cabinet so as to be plugged in the fields of electric power, communication, televisions and broadcasting.

The invention discloses a mechanical interlocking operation device for a cable branch box, which relates to the technical field of manufacturing of high-voltage electrical equipment. The mechanical interlocking operation device comprises an outer box, a switch cabinet in which a load switch and a load switch operation mechanism are installed, a switch operation shaft arranged on the operation mechanism, a door lock arranged on the outer box, as well as an upper lock rod and a lower lock rod which are connected with the door lock, wherein the operation shaft is movably connected with a switch cabinet mechanical lock arranged in the switch cabinet, and the switch cabinet mechanical lock is movably connected with a mechanical lock key; the mechanical lock key is movably connected with a branch box mechanical lock installed on the outer box; the branch box mechanical lock is connected with the door lock; the upper lock rod and the lower lock rod are connected with a top rod respectively; the upper lock rod and the lower lock rod are further movably connected with a lock clamp arranged on a box body of the outer box. The mechanical interlocking operation device is capable of solving the problems of high production cost, and difficulty in installation and operation, of the cable branch box while meeting five-prevention requirements.

The invention discloses a cable pulling force buffering apparatus for engineering machinery. The cable pulling force buffering apparatus comprises a power-supply cable and a power-utilization cable which are connected through a plug, wherein the power-supply cable is provided with a clamping and fixing apparatus; the clamping and fixing apparatus is in tensioning connection with power-utilization equipment through an elastic connecting line; and the power-utilization cable is connected with power-utilization equipment in a tension-free manner. According to the cable pulling force buffering apparatus provided by the invention, the cable is fixedly connected through the clamping and fixing apparatus; the clamping and fixing apparatus is in tensioning connection with power-utilization equipment through the elastic connecting line to be fixed, so that the problem existing in the safe connection of the cable is solved; meanwhile, for realizing safer and more convenient connection and maintenance of the cable, a cable connecting supporting column is arranged on the power-utilization equipment, and a rotatable and foldable rigid connecting rod is further provided; meanwhile, a pulling force sensor which is arranged along the elastic connecting line can be used for monitoring the connection condition of the cable at any time; the clamping and fixing apparatus provided by the invention adopts a two-piece type clamping bracket with a rotary shaft open-close structure; replaceable elastic clamping and fixing claws are arranged, so that the cable is prevented from being damaged in the clamping and fixing operation; and the fixation requirements of multiple kinds of different cables can be satisfied as well.