Abstract

A constant-rotational speed heat dissipation motor for an electric tool, comprising a motor body (1). A transmission shaft (2) is fixedly connected to a transmission end of the motor body; a heat dissipation grid (3) is fixedly mounted at the middle of the motor body (1); a top cover (4) is fixedly mounted at the upper end of the motor body (1); a heat dissipation net (5) is fixedly mounted at the upper end of the top cover (4); a first rotor (6) is movably mounted at the lower end of the interior of the motor body (1); a bearing (7) is fixedly mounded at the upper end of the first rotor (6); and a second stator (8) is fixedly mounted at the upper end of the interior of the motor body. According to the constant-rotational speed heat dissipation motor for the electric tool, internal double-shaft transmission is utilized, such that when the motor body is loaded, a heat dissipation fan can be driven by the second rotor to rotate at an original rotation number, an internal heat dissipation fan continuously rotates at a constant rotation number for heat dissipation, and the situation that a heat dissipation effect becomes poor as a result of the reduction of the rotation number of the motor due to the load is avoided; and the heat dissipation effect is effectively improved.

IPC Classes  ?

• H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Abstract

Disclosed is a copper-aluminum composite bus duct, belonging to the technical field of bus power distribution. The copper-aluminum composite bus duct comprises a duct box (1), wherein an air bag (4) is arranged at the bottom of the duct box (1); a control device (5) is arranged at the bottom of the air bag (4); pressure mechanisms (6) are arranged at the left and right ends of a baffle (502); a first air inlet (8) is provided in the bottom of a shell (501); and a second air inlet (9) is provided in the bottom of the duct box (1). According to the copper-aluminum composite bus duct, when a copper-aluminum composite bus in the duct box (1) works, a relatively large amount of heat is generated, such that same is in contact with the baffle (502) in a pressed manner, and the baffle (502) deflects and turns over on a fixed table (503) when being pressed, such that the other side of the baffle (502) which is not pressed slides upwards from the interior of a sliding groove (10), thereby completely separating the baffle (502) and a pressing plate (602) from the sliding groove (10), such that air enters the shell (501) from the first air inlet (8), passes through the separation position between the sliding groove (10) and the baffle (502), and then enters the duct box (1) through the second air inlet (9), and heat in the duct box (1) is dissipated by means of an airflow entering same, thereby achieving the purposes of cooling and dissipating the heat in the interior of the duct box (1) by means of the airflow entering same after the baffle (502) is moved by using the heat generated when the copper-aluminum composite bus works.

IPC Classes  ?

• H02G 5/06 - Totally-enclosed installations, e.g. in metal casings
• H02G 5/10 - Cooling

Abstract

A low-voltage drawout power distribution cabinet, comprising a box body (1) and a power distribution cabinet (2), the power distribution cabinet (2) being composed of a cabinet door (21), a cabinet body (22), a handle (23), a rotary rod (24), a pull ring (26), a spool (27), a torsional spring A (28), a rubber rope (29), a rotary column (210), a blocking ring (211), a friction roller (212), a torsional spring B (213), a sleeve column (214), a spur gear (215), an electrical cabinet (216) and a pull block (25). By means of the arrangements of the cabinet door (21) and the cabinet body (22), the cabinet door (21) will be turned to be flush with the inner wall of the bottom surface of the cabinet body (22) after being opened, so that when the electrical cabinet is drawn out, the cabinet door (21) can support the electrical cabinet, preventing the formation of a torque between the electrical cabinet (216) and the cabinet body (22), increasing the stability of the power distribution cabinet (2), and facilitating a user applying a force when the electrical cabinet (216) is maintained. By means of the arrangements of the power distribution cabinet (2), the electrical cabinet (216) can be automatically pushed out after the cabinet door (21) is opened, and the cabinet door (21) can be automatically closed after the electrical cabinet (216) is pushed in, reducing the operation steps of a user during maintenance, thereby effectively shortening the operation time of the user and increasing the maintenance efficiency of the user.

IPC Classes  ?

• H02B 11/173 - Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
• H02B 11/127 - Withdrawal mechanism
• H02B 1/36 - Racks with withdrawable units
• H02B 1/56 - CoolingVentilation

Abstract

The present invention relates to the technical field of distribution cabinets. Disclosed is a maintenance-free distribution cabinet, comprising a cabinet body, a cabinet door, and a cabinet top. A heat-dissipating fan is disposed on the inner side of the cabinet top; first insulating blocks are symmetrically mounted on the inner walls of the cabinet body; second insulating blocks are provided on the cabinet door; wires are provided between both first insulating blocks and a terminal of the heat-dissipating fan; conductive blocks are mounted on the first insulating blocks and the second insulating blocks; and a temperature sensing device is disposed above one insulating block. In the maintenance-free distribution cabinet, when electrical components in the cabinet work for a long time, the temperature in the cabinet body is increased, mercury in a housing is heated to expand, the expanded mercury pushes a conductive rod to contact with wires on two ends to make the wires form a closed circuit so as to enable the heat-dissipating fan to start working, such that when the temperature in the distribution cabinet reaches a certain degree, the temperature sensing device can automatically contact with the wires to make the wires form a closed circuit so as to enable the heat-dissipating fan to work, and solves the problems of electricity wastage and additional heat generation due to continuous heat dissipation operation of the heat-dissipating fan.

IPC Classes  ?

• H02B 1/56 - CoolingVentilation
• H02B 1/30 - Cabinet-type casingsParts thereof or accessories therefor
• H02B 1/20 - Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
• H01H 29/30 - Switches having at least one liquid contact with level of surface of contact liquid displaced by expansion or evaporation thereof
• H02G 3/02 - Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles Details

Abstract

The present invention relates to the technical field of power distribution cabinets. Disclosed is a corrosion-resistant power distribution cabinet body, comprising the cabinet body, wherein an insertion slot is provided in the upper surface of the cabinet body and is located at the midpoint of the upper surface of the cabinet body; electric motors are arranged on the cabinet body; a protective cover is also arranged on the cabinet body; the electric motors are located in the protective cover; a sliding groove is provided at the position, corresponding to the insertion slot, in the cabinet body; gears are arranged in the sliding groove and are meshed with the sliding groove; output shafts of the electric motors are fixedly connected to the middle points of the gears; rotating disks are arranged below the gears; and fans are fixedly installed on the lower surfaces of the rotating disks. According to the corrosion-resistant power distribution cabinet body, the output shafts of the electric motors rotate, so as to drive the gears to rotate in the sliding groove, such that the fans can be driven to move in the cabinet body to enable the fans to blow air to devices over a large range in the cabinet body for heat dissipation and to also blow off dust on the devices in the cabinet body, thereby achieving a better heat dissipation effect for the devices in the cabinet body.

IPC Classes  ?

• H02B 1/56 - CoolingVentilation

Abstract

An intensive busway, comprising a busway body (1) and a busway cover (2). The busway body (1) is fixedly connected to the busway cover (2). A transverse partition plate (3) is fixed provided inside the busway body (1). Conductive copper bars (9) are fixedly connected to the upper surface of the transverse partition plate (3). Heat dissipation holes (4) are provided on the conductive copper bars (9). Through holes (5) are provided on the groove walls of the front and rear ends of the busway body (1). A filter screen (6) is fixedly connected to the inner rear end of each through hole (5). According to the intensive busway, liquid is expanded to enter the inside of an airbag (14), and then the airbag (14) expands upwards along a fixed shaft (13), so as to open the lower end of a blocking plate (8) inside the through hole (5) by means of a rotating shaft (7), so that the heat inside the busway body (1) can be diffused through the through hole (5), such that the busway body (1) can work for a long time, and the service life of the busway is prolonged.

IPC Classes  ?

• H02G 5/06 - Totally-enclosed installations, e.g. in metal casings
• H02G 5/10 - Cooling