47results about How to "Unclamp" patented technology

The invention relates to a door plate processing instrument, and particularly relates to a door body clamping device. The door body clamping device comprises a motor, four pressing plates in all, and a gear shaft, wherein the four resisting plates are used for pressing against a door body; one side of each pressing plate toward the adjacent side edge is a resisting surface; a rack of which the length direction is perpendicular to the resisting surface of each pressing plate is fixedly arranged below the pressing plate; the gear shaft is arranged below the door body; the racks which are respectively connected with the pressing plates with opposite positions are respectively arranged at two opposite sides of the gear shaft; the resisting plates and the racks form clamping function members; the clamping function members take the gear shaft as the center point and are in point symmetry distribution; the racks are meshed with the gear shaft; and the motor is fixedly connected with the lower end of the gear shaft or the motor is connected with the gear shaft through a transmission mechanism. The defect that the clamping device in the prior art cannot clamp from four surfaces is overcome; and the door body clamping device capable of automatically resetting is provided.

The invention provides a security door frame processing assembly clamping mechanism comprising a fixed bottom block. A transmission shaft is connected into the fixed bottom block; a sleeve block is further included, the sleeve block can move up and down along the transmission shaft, negative pressure cylinders are fixed to the two ends of the sleeve block, and the negative pressure cylinders are provided with third air passages; a negative pressure pump and a total air passage are also included, one end of the total air passage communicates with a suction port of the negative pressure pump, and the third air passages communicate with the other end of the total air passage in the up and down movement process of the negative pressure cylinders; a stepping motor, an abutting plate, a pressingplate, a first spring and two pressing switches are further included, the stepping motor is connected with the transmission shaft, the output ends of the pressing switches are in signal connection with the input end of the stepping motor through a single chip microcomputer, the abutting plate is slidably connected to the interior of the fixed bottom block up and down, the upper end of the abutting plate extends out of the fixed bottom block, and the two ends of the first spring are connected with the fixed bottom block and the abutting plate; and two side clamping plates and a driving part capable of driving the two side clamping plates to move face to face and back to back are further included. The clamping mechanism can replace manual work and can save time and labor.

The invention discloses a device for testing rigidity of a semi-rigid bearing. The device for testing the rigidity of the semi-rigid bearing comprises a driving piece and a fixing assembly, wherein atesting shaft is arranged between the driving piece and the fixing assembly, a to-be-tested station is arranged on the testing shaft, and a fixing shell is arranged on the to-be-tested station; the driving piece comprises a connecting rod and a hydraulic cylinder, the connecting rod is matched with the testing shaft in a clamping connection mode, and a telescopic type displacement sensor and a pressure sensor are arranged on the testing shaft; the fixing assembly comprises a fixing clamping tool, and the fixing clamping tool comprises a threaded rod, an annular installing seat and two clampingjaws; the clamping jaws are hinged to the annular installing seat, one ends of the clamping jaws are located in the annular installing seat and abut against the threaded rod to form driving ends, andthe other ends of the clamping jaws are located on the two sides of the fixing shell to form clamping ends; and the threaded rod is matched with the fixing shell in a threaded mode, an inclined surface is arranged on the threaded rod, and the threaded rod and the annular installing seat are relatively slidably arranged. According to the device for testing the rigidity of the semi-rigid bearing, the effect of fixing a to-be-tested bearing is good, the testing data are comprehensive and exact, and the testing precision is high.

The invention relates to the technical field of punching, in particular to a clamping device for workpiece punching. The device comprises a rack and a punching unit. The punching unit sequentially comprises a conveyor belt, a base, a clamping part, and a positioning plate and a punching machine fixed to the rack, a discharging hole and sliding grooves are formed in the upper surface of the base, the sliding grooves are formed in the two relative sides of the discharging hole and communicated with the discharging hole, the clamping part comprises two clamping units symmetric about the center line of the discharging hole, and each clamping unit comprises a clamping block, a first push rod and a second push rod, wherein the clamping block is arranged on the base, the middle section of the first push rod is hinged to the rack, one end of the first push rod is connected with a bulb of the clamping block, a spring is connected to the other end of the first push rod, the spring is verticallyfixed to the rack, and a groove is formed in the end, close to the spring, of the first push rod; one end of the second push rod is fixedly connected with an air cylinder, a sliding block is arrangedat the other end of the second push rod, and the sliding block is slidably arranged inside the groove. The technical problem that in the punching process, the punching rate is low due to sliding of workpieces in the punching process is solved.

The invention relates to a solar photovoltaic vacuum glass tube plate type curtain wall. The solar photovoltaic vacuum glass tube plate type curtain wall comprises an outer glass wall arranged on one side of a house, an outer exhaust device is arranged at the top of the outer glass wall, a rotating plate is rotationally connected in an inner partition plate fixedly connected in the house, a curtain wall body is arranged in the rotating plate, and a replacement assembly used for replacing the curtain wall body is arranged in the rotating plate. Two symmetrical connecting plates are arranged in the house, the two connecting plates are both located between the outer glass wall and the inner partition plate, and cleaning assemblies used for cleaning the inner surfaces of the outer glass wall and the curtain wall are arranged in the connecting plates. The problems that an existing solar photovoltaic vacuum glass tube plate type curtain wall cannot clean dust between glass curtain walls, an inner glass wall is inconvenient to replace, and an outer glass wall cannot be protected are solved.

The invention relates to the technical field of advertising media, and discloses a replaceable advertising board capable of automatically avoiding wind and resetting after wind stops in strong wind weather. The advertising board comprises an advertising board body, wherein a rotating shaft is movably connected to the interior of the advertising board body, an advertising board body is fixedly installed on the outer wall of the rotating shaft, an advertising clamping device is fixedly installed in the advertising board body, single-pole magnets are fixedly installed at the bottom of the advertising clamping device, rotating wheel discs are movably installed in the advertising board body, and movable rods are movably connected to the front faces of the rotating wheel discs. By manually pressing a telescopic rod to move downwards, the two rotating wheel discs are driven to rotate by means of the movable rods, metal stop blocks on the rotating wheel discs rotate to the portion between thetwo single-pole magnets, the attraction force between the two single-pole magnets is blocked, clamping of the advertising clamping device on cloth is relieved, the advertising cloth is replaced, and the effect of conveniently replacing the advertising board cloth is achieved.

The valve control device with the remote monitoring function comprises a valve body, a feeding pipe and a discharging pipe are connected to the valve body, a pressure sensor is installed in the feeding pipe, a box body is installed on the valve body through a supporting rod, a flow control assembly is arranged on the box body, a working cavity is formed in the box body, and a valve rod is installed in the working cavity. A piston is slidably installed in the working cavity, a piston rod is installed on the piston, a sliding hole is formed in the bottom of the box body, the piston rod penetrates through the sliding hole, a valve element is arranged in a valve cavity of the valve body, a valve hole is formed in the valve cavity, and a valve rod is installed on the valve element. When the valve is opened, materials in the feeding pipe can be extruded, so that the materials can generate acting force on the pressure sensor, the pressure sensor feeds back data of the condition in the feeding pipe to a remote terminal, remote monitoring of the condition of the valve is achieved, and at the moment, the remote terminal can achieve automatic adjustment of the valve through the flow control assembly.

The invention provides a safety belt shaking warning device, which comprises a clamping mechanism, a clamping driving mechanism and a shaking driving mechanism. The clamping driving mechanism is arranged on the clamping mechanism and used for driving the clamping mechanism to clamp a safety belt. The shaking driving mechanism is connected with the clamping mechanism and used for driving the clamping mechanism to reciprocate, and thus, the safety belt clamped by the clamping mechanism is alternately tightened and loosened. The clamping driving mechanism drives the clamping mechanism to clamp the safety belt, and the shaking driving mechanism drives the clamping mechanism to reciprocate to further drive the safety belt clamped by the clamping mechanism to be alternately tightened and loosened, so that the safety belt shakes to tactually and directly remind a driver and/or passengers of an emergency state, then the driver and/or the passengers can timely react to correct operations, and time difference of early warning signals reaching operation reaction chains of the driver and/or the passengers is sharply reduced.

The invention provides an automatic hoisting tool and hoisting equipment, and relates to the technical field of hoisting tools. The automatic hoisting tool comprises a hoisting beam device, a connecting beam device, a clamping arm device, a separating hoisting device and a base device; the connecting beam device comprises at least one pair of connecting beam bodies, and the first ends of the two connecting beam bodies in each pair are hinged to the hoisting beam device; the clamping arm device comprises at least one pair of clamping arm bodies, and the two clamping arm bodies in each pair arecorrespondingly hinged to the two connecting beam bodies in each pair, and the two clamping arm bodies in each pair are hinged to the base device; and the separating hoisting device is connected to the hoisting beam device, and the working end of the separating hoisting device can be connected to or separated from the base device. The hoisting equipment comprises the automatic hoisting tool. The problem that the hoisting efficiency and the hoisting safety are influenced due to the fact that a traditional hoisting tool needs manual participation is relieved.

The invention discloses a socket-and-spigot PP inner wall reinforced concrete pipe. The socket-and-spigot PP inner wall reinforced concrete pipe comprises a PP layer, wherein the outer side of the PP layer is wrapped with a concrete layer; a steel ring is fixed at one end of the concrete layer; the section of the steel ring is in the shape of an equilateral trapezoid. A preparation method of the socket-and-spigot PP inner wall reinforced concrete pipe comprises the following steps: step 1, preparing a PP pipe; step 2, preparing concrete; and step 3, pouring the concrete obtained in the step 2 outside the PP pipe through a reinforcing steel bar mold to obtain a tongue-and-groove PP inner wall reinforced concrete pipe. According to the socket-and-spigot PP inner wall reinforced concrete pipe, the steel ring is arranged at one end of the pipe, so that the pipe is more convenient to disassemble and assemble, and a large amount of manufacturing cost is saved for the PP inner wall pipe. Through the arrangement of a fixing mechanism, the PP pipe can be well fixed, so that the PP pipe cannot deviate during cutting; a moving rod can move randomly in the vertical direction, so that the socket-and-spigot PP inner wall reinforced concrete pipe can adapt to cutting at different heights and is wider in application range.

The invention belongs to the field of automatic disconnecting switches. The distribution network automatic control device for power grid dispatching comprises a base, insulators A, wiring boards, an inverted T contact, a knife switch mechanism, insulators B, a transmission shaft and a stepping motor; the two vertical insulators A are symmetrically installed on the base; and the wiring boards withwiring holes are installed at the upper ends of the insulators A respectively. According to the distribution network automatic control device for power grid dispatching of the invention, two L-shapedplates A are matched with two external threads with opposite rotating directions at two ends of a pin A respectively; and when two swing plates swing upwards simultaneously along with the L-shaped plates A hinged to the swing plates, the two swing plates of which the middle portions hinged in a crossed mode swing oppositely around a hinged point between the two swing plates, so that two conductiveplates release the clamping of the inverted T-shaped contact and are separated from each other, and therefore, a disconnecting switch is turned on. In a working process, the stepping motor only overcomes the obstruction of a plate spring B with a very small elastic coefficient and breaks a balance-approximating state between the plate spring B and the stepping motor, and the stepping motor consumes less energy and has a better energy-saving effect.

The invention discloses a clamping device for three-coordinate measurement of a workpiece, and belongs to the technical field of measurement. The clamping device comprises a body, a clamping component and an adjusting component, wherein the body is provided with a plurality of positioning pins; the clamping component comprises a plurality of clamping pieces, each clamping piece comprises an air cylinder, a lever and a pressing head, a piston rod of each air cylinder is hinged to one end of the corresponding lever, each air cylinder is provided with a first air port and a second air port which are communicated with two cavities of the air cylinder respectively, and the middle of each lever is rotationally installed on the corresponding air cylinder, and each pressing head is located at the other end of the corresponding lever; and the adjusting component comprises an air source, a pressure regulating valve and a three-position four-way directional control valve, and an air outlet of the air source is communicated with an air inlet of the pressure regulating valve. According to the clamping device for three-coordinate measurement of the workpiece, before three-coordinate measurement is conducted on the workpiece, different clamping forces generated when the workpiece is assembled can be simulated through the air cylinders, and therefore the assembly dimension of the workpiece can be accurately obtained.

The invention relates to the technical field of building energy conservation and renewable energy source utilization, and concretely relates to an aluminum alloy frame for a solar photovoltaic panel, and aims to solve the problems that the packaged photovoltaic panel is low in structural stability, complex in installation and inconvenient to disassemble and maintain. The aluminum alloy frame comprises a first frame and a second frame, and the first frame comprises a first vertical part; a first inner flange is arranged at the top of the first vertical part, an outer flange is arranged at the bottom of the first vertical part, the second frame comprises a second vertical part, a second inner flange is arranged at the top of the second vertical part, and the solar photovoltaic panel is clamped between the first inner flange and the second inner flange; the outer flange is fixedly connected with the second vertical part through a plurality of mounting assemblies; and a fastener is arranged at the end, away from the receding groove, of the connecting rod. The phenomena of dislocation, corner seams and the like can be effectively avoided, and meanwhile dismounting and mounting are convenient and fast.

The invention relates to an offshore wind turbine convenient for balance self-correction. A rolling ball is slidably connected into a bottom plate, a stand column fixedly penetrates through the rolling ball, a tower column is fixedly connected to the top end of the stand column, a wind power generation set is arranged at the top end of the tower column, and a control assembly used for keeping the stand column in a vertical state is arranged at the bottom end of the stand column; and a plurality of floats fixedly connected to the bottom of the bottom plate through a replacement assembly are annularly and equidistantly arranged in the bottom plate by taking the stand column as a circle center. The offshore wind turbine convenient for balance self-correction structure is compact in structure, the floats can be easily replaced by rotating a rotating rod, and when the bottom plate inclines, the vertical state of the stand column can be kept through a bearing cone block, so that the inclination of the stand column due to the influence of the bottom plate is avoided; and in addition, blocking of an arc-shaped clamping block to the rolling ball can be relieved by rotating the arc-shaped clamping block, so that the abraded rolling ball can be replaced conveniently.