303results about How to "Prevent pull out" patented technology

The invention discloses a power conversion device. The power conversion device comprises a device base. A protection casing body is arranged on the device base. A processor is arranged on one side of the protection casing body. One end of the protection casing body is provided with a liquid inlet, a liquid outlet and an inlet base. The other end of the protection casing body is provided with an outlet base. The inlet base and the outlet base are electrically connected with a conversion box arranged in the protection casing body. The lower part of the conversion box is connected with a slide base through a group of vertical damping springs. Both ends of the slide base are provided with lateral damping springs. A group of semiconductor cooling plates and a group of fans are arranged in the protection casing body. A serpentine heat exchange tube is arranged on the surface of the conversion box. The power conversion device has the advantages of easy and labor-saving movement, flexible positioning and reliable fixation, is provided with water cooling and air cooling, and has a good damping effect. The conversion box is prevented from being damaged by bumping. The service life of the device is prolonged. The failure rate is reduced.

The invention provides a segmented anchoring and grouting anchor rod device capable of achieving automatic clamping and an anchoring method thereof. According to the device, a grouting anchor rod, a first connecting piece, a cylinder, a second connecting piece and a resin anchor rod are sequentially connected into a rod body through threads; a piston and a piston rod are arranged in the cylinder and are fixedly connected; the end, connected with the second connecting piece, of the cylinder is provided with an annular groove, a plurality of supports are arranged at the end of the cylinder, one end of a movable connection rod is connected with the end of the piston rod, the other end of the movable connection rod penetrates through the annular groove of the cylinder and is hinged to a clamping wing, and the end of the clamping wing is hinged to the supports. According to the device and the method, resin cartridge anchoring and grouting anchoring are fully used, and the clamping wing is added and deeply embedded into the anchor hole wall, so that anchoring force is greatly enhanced. The device and method are suitable for unstable roadways with various mine soft rock crushing, can greatly improve anchoring capacity of a whole anchor rod, effectively improve self-stability of a roadway surrounding rock body, and have the advantages of being good in end anchoring effect, high in anchoring efficiency, convenient to install and the like.

The invention discloses a method for reinforcing a tailings accumulation dam with an end scroll type geogrid. The steps are: (1) laying a layer of geogrid on the surface of the sub-dam and dry beach; (2) laying a layer of geogrid on the surface of the geogrid Place the hollow tubes at both ends, then roll up the two ends of the geogrid and wrap the corresponding hollow tubes to form a reel, and then fasten the tendons of the reel one by one with iron wire; (3) carry out the dam Put ore in front to form a tailings accumulation dam; (4) Repeat the steps (1)-(3), laying up layer by layer until reaching the overall height of the tailings dam. The invention increases the reinforcement force, can effectively prevent the geogrid from being pulled out, enhances the stability of the tailings dam body, improves the underground seepage field of the tailings dam, and effectively solves the problem of high tailings accumulation dams faced by mining enterprises. While simplifying the construction plan, the cost is greatly reduced, and it is more suitable for large and medium-sized tailings ponds, earthquake areas or other harsh conditions.

The invention discloses a handcart interlocking mechanism of a five-prevention interlocking device, which includes an operating shaft connected to a ground switch, which can transmit the torque of theground switch operating shaft to the transmission structure of the circuit breaker handcart, and a locking structure for preventing the circuit breaker handcart from being pulled out of the circuit breaker chamber when the ground switch is switched on, the locking structure is linked with the locking structure to prevent the limiting structure of the circuit breaker handcart from being operated when the ground switch is switched on, and the positioning structure for preventing the ground switch from being switched on when the circuit breaker handcart is not in the test position; The handcartinterlocking mechanism is safe and reliable, Through the cooperation of multiple structures, It is ensured that the earth switch operation shaft closes the earth switch only when the circuit breaker handcart is in the test position, and it is avoided that the circuit breaker handcart can be pushed into the working position by operating the worm of the handcart when the earth switch is closed, andthe circuit breaker handcart can be pulled out of the circuit breaker chamber when the earth switch is opened.

The invention relates to an upper thread holding device of a sewing machine, in particular to an upper thread holding device (70) of a button sewing machine (100), comprising a slablike sewing thread catching part (71) with the front end formed into a catching part (71b) catching a sewing thread (T) and moving forwards and backwards, a cylinder (72) fixed on a body frame (F) and ensures that the sewing thread catching part (71) moves forwards and backwards as well as a first leaf spring (73) in elastic connection with the underside (71a) of the sewing thread catching part (71), wherein the first leaf spring (73) applies elastic force on the underside (71a) of the sewing thread catching part (71); the sewing thread catching part (71) ensures that the sewing thread (T) is in slide contact with the surface of the first leaf spring (73) and moves from the front end part (73a) to the butt end part (73b) of the first leaf spring (73), thereby holding the sewing thread (T) caught by the catching part (71b) of the sewing thread catching part (71). The upper thread holding device can reduce the occurrence of sewn degraded product.

The invention discloses a matched trolley of a winding machine and a winding system. The matched trolley comprises a moving trolley, a six-axis robot and a placing table are arranged on the moving trolley, a thread end knotting device, a thread wheel thread end grabbing device and an automatic threading mechanism are arranged on the placing table, the six-axis robot is connected with the thread wheel thread end grabbing device and the automatic threading mechanism through a quick change device, an image collector is further arranged at the front end of the six-axis robot, the axis of the image collector is parallel to that of the quick change device, a lens faces forwards, and an automatic thread breaking mechanism for breaking a silk thread on a full thread wheel from a silk thread at the winding machine is arranged between the six-axis robot and the placing table. According to the scheme, the thread end knotting mechanism and the automatic threading mechanism are arranged on the moving trolley, the thread end knotting mechanism can achieve off-line knotting operation, the working efficiency is beneficial for being improved, the automatic threading mechanism can effectively achieve automatic threading of thread ends, and therefore the whole process automation of feeding and discharging of the thread wheel at the winding machine is achieved, and the automation degree is high.

The invention discloses a carbon fiber board prestress tension clamp which comprises a clamping sleeve with a wedge-shaped through hole, a wedge-shaped clamping piece used for clamping a carbon fiber plate, a connecting plate detachably fixedly arranged at the big opening end of the wedge-shaped through hole, and a tension rod fixedly arranged on the connecting plate, wherein the wedge-shaped clamping piece is used for clamping the carbon fiber plate and then is wedged into the clamping sleeve to be matched with the wedge-shaped through hole. The carbon fiber board prestress tension clamp is characterized in that the wedge angle of the wedge-shaped clamping piece is more than that of the wedge-shaped through hole, which can lighten the stress concentration at the small end of the wedge-shaped clamping piece, is beneficial to transferring the tension force inside the clamp and prevents the carbon plate from being broken during the tesnion. The cylindrical clamping sleeve is adopted to ensure that the thickness of the clamping sleeve at the middle along the width direction of the wedge-shaped clamping piece is biggest, which can reduce the transverse deformation of the clamping sleeve, is beneficial to the uniform force of the carbon fiber plate in the width direction and prevents carbon fibers at the side of the carbon fiber plate from being broken, therefore, the clamp has better clamping property. A pre-ejecting and ejecting-retreating device is matched with the clamp, therefore, the prestress tension operation with high-quality and high speed and efficiency of the carbon fiber plate can be realized.

The invention discloses a handle of a concealed door window lock. The handle comprises a base, a hand grip and a square shaft, wherein the base is provided with a cavity capable of accommodating the hand grip; two sides of the front end of the hand grip are provided with square shaft fixing lugs; the front end of the square shaft is arranged between the square shaft fixing lugs on two sides, the square shaft fixing lugs are provided with fixing holes, and the square shaft is provided with connecting holes matched with the fixing holes; a torsion spring is arranged between the square shaft and the hand grip; the torsion spring comprises a pressure lever, torsion lugs and lug holes; a fixed column is inserted into the fixing holes, the lug holes and the connecting holes together; the front end of the cavity is provided with a positioning cavity, and a hollow positioning sheet and a shaft hole through which the square shaft pass are arranged in the positioning cavity; the hand grip is provided with a groove, a cushion sheet fixing plate is arranged in the cavity, and a cushion sheet is arranged between the groove and the cushion sheet fixing plate; and the square shaft is provided with a clamping groove, and a fixed sheet is sleeved on the clamping groove. The invention provides the handle of the concealed door window lock, wherein the hand grip is concealed in the base so as to prevent the hand grip from hooking an article, improve the service safety of the handle and prolong the service life of the handle.

A coupling element for container connection has at least one actuating device (12) to rotate a locking bolt (11). When replacing a defective or worn actuating device (12), the existing coupling element must be removed. The invention relates to a coupling element, wherein the at least one actuating device (12) is detachably connected to a locking screw (11). For this purpose, inserting action holding means ( 41 , 42 ) are used, which can be accessed from outside the chamber ( 10 ) through an opening ( 48 ) of the chamber ( 10 ). In the case of the coupling element according to the invention, the actuating means (12) can be replaced directly without dismantling the chamber (10).

A stoma dilation device that includes a tubular support defining a continuous pathway through the device; at least one inflatable dilation balloon and at least one inflatable retention balloon located on the tubular support; and inflation lumens for each balloon. The inflatable dilation balloon forms at least a first portion of the device and the inflatable retention balloon forms at least a second portion of the device. The inflatable retention balloon is configured to have a diameter upon full, unrestrained inflation that is greater than the largest diameter of the inflatable dilation balloon upon inflation.

The invention discloses a power distribution cabinet based on a cable fixing and adjusting structure, which mainly solves the problem in the prior art that a cable cannot be stably connected with a connection part inside a power distribution cabinet during the cable wiring operation. The power distribution cabinet comprises a power distribution cabinet body and an anti-pulling piece. The anti-pulling piece comprises a baffle plate fixed on the power distribution cabinet body and provided with a first cable through hole, a fixing part provided with a second cable through hole, a spring with the two ends thereof respectively connected with the baffle plate and the fixing part, and a cable fixing and adjusting structure arranged above the second cable through hole. The cable fixing and adjusting structure is of a conical structure. The diameter of the cable fixing and adjusting structure is gradually reduced along the central axis towards the direction of the fixing part. The central connecting line between the first cable through hole and the second cable through hole is on the same straight line with the central axis of the spring. The power distribution cabinet is stable in connection effect and the influence of the cable wiring operation on the connection part thereof is effectively avoided.

The invention relates to aconnecting load-bearing joint structure of an adjustable rotary precast concrete exterior hanging wall panel and a steel beam and a construction method.The connecting load-bearing joint structurecomprises the precast concrete exterior hanging wall panel, and the precast concrete exterior hanging wall panel is connected with a main structure through a steel bracket structure; thesteel bracket structure includes a steel bracketbody, and a vertical steel plate of thesteelbracketbody is parallel with the precast concrete exterior hangingwall panel, and U-shaped grooves and circular holes are symmetrically formed in the two sides of the central line at which the vertical steel plateis perpendicular to a transverse bottom plate; and the U-shaped groovesare internally provided with rotatable connecting structures, andcircular holes are internally provided with horizontal positioning structures; and a large circular hole is formed in the transverse bottom plate of the steel bracketbody, a load-bearing structure is installed in the large circular hole, an embedded structure is arranged in a concrete floor slab, and the load-bearing structure is fixed to the steel beam through the embedded structure.According to the connecting load-bearing joint structure, stressis simple and clear, and the elevation and horizontal position of the precast concreteexterior hanging wall panel can be adjusted, so that on-site construction and installation arefacilitated.

The invention discloses a burst production device in which a brush body (8), which has openings for receiving and fastening bristles and which is part of the brush to be produced, has a brush body holder (9), wherein at least one brush body (8) is releasably insertable to form a form-fitting temporary unit which is transported into the device, through the device and out of the device. The brush body holder (9) is designed to have a mechanical stop (40) against the brush body (8) from moving forward or moving away from the brush body holder (9). Furthermore, corresponding brush body holders and a manufacturing method are described.

The invention relates to a photovoltaic junction box connector. A limiting sleeve is supported between a metal electrode and a lock nut to prevent the metal electrode from being pulled out of a connector main body. The limiting sleeve comprises an annular sleeve and an upright axially stretching out of a side wall of the annular sleeve, wherein a reinforcing block radially stretching is arranged at the front end of the upright; and the reinforcing block is embedded into a notch at the rear end of the metal electrode. The limiting sleeve is mounted between the tail of the metal electrode of the connector and a cable sheath straining ring component, the upright pushes against the notch of the metal electrode, and the head of the annular sleeve pushes against the cable sheath straining ring component, so that a metal electrode terminal and the lock nut form overall support by the limiting sleeve of a cable in the connector. A drawing force of the cable for mounting the connector is above 400N.m, so that the drawing force is basically greater than a snap-in force of a cable core and the metal electrode terminal, and cable looseness and extraction caused by limiting can be permanently avoided.

The inventive safety belt retractor and safety belt device including the safety belt retractor can effectually prevent end-locking caused by pulling out a sensor via the safety belt, and can form a structure preventing the end-locking with a smaller and compacter configuration. When an eccentric gear (14) rotates along with retraction or pull-out of the safety belt, a pair of stop components (45, 46) are controlled by a cam slot (49) provided on a casing (10), guide slots (47, 48) of the eccentric gear (14) along an ELR-ALR switching mechanism is movable in a diameter direction of a reel. At the time of approximately totally retracting the safety belt, the stop components (45, 46) are located in large-diameter side arc slots (49c, 49d), thus pressing inner circumference of a ring section (12b) to prevent swing of inertia wheels (12). Besides, in case of pulling out the completely-retracted safety belt by a prescribed amount, the stop components (45, 46) are located in small-diameter side arc slots (49a, 49b), thus not pressing the inner circumference of the ring section (12b) to enable free swing of the inertia wheels (12).

A lancing system comprising a lancet with a handle portion and a needle bearing portion, the needle bearing portion retaining a thin needle protected by a safety cap. The safety cap includes first and second chambers, where the first chamber acts as a sheath and the second chamber having a surface positioned to compromise the structure of the needle when the needle bearing portion of the lancet body is inserted into the second chamber.

The invention discloses a special heat-resistant and wear-resistant polyurethane composite for printing and dyeing rollers. The composite is prepared from the following raw materials in parts by weight: 10-35 parts of 2,4-toluene diisocyanate, 20-35 parts of polycarbonate diol, 10-28 parts of polypropylene oxide diol, 2-9 parts of polyether ether ketone, 1-5 parts of phenyl silicone rubber, 1-3 parts of phenolic resin, 1-5 parts of a chain extender, 0.3-1 part of alcohol amine, 0.01-0.05 parts of a catalyst, 1-5 parts of nano-steel slag , 0.1-0.9 parts of nano-titania, 0.2-1.3 parts of carbonfibers, 0.1-1.5 parts of beta-cyclodextrin, 0.2-1.2 parts of hexamethyldisilazane, 0.2-1 part of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and 2-6 parts of a toughening agent. The special heat-resistant and wear-resistant polyurethane composite for the printing and dyeing rollers has excellent heat resistance and wear resistance, the printing and dyeing rollers made of the composite have excellent heat resistance and wear resistance and long service life.

The invention discloses a drainage tube fixing device which comprises a base and a tightening rope. The bottom face of the base is provided with medical proof fabric, the base comprises a fixed base and a turnover cover, the front end face of the fixed base is provided with a U-shaped portion, the top face of the fixed base is provided with a boss, the top face of the boss is provided with a first through hole and a second through hole, the top faces of two connecting arms of the U-shaped portion are respectively provided with an elastic locking column, the front end of the turnover cover is hinged to the front end of the front end of the U-shaped portion, the two side faces of the turnover cover are provided with clamping grooves matched with the locking columns, one end of the tightening rope penetrates out of the first through hole from bottom to top and is fixed in the second through hole to form a grommet, and the other end of the tightening rope penetrates out of the rear end of the fixed base. The drainage tube fixing device is simple in structure, and is capable of effectively fixing a drainage tube, thoroughly solving the problem that components are unstable in connection, preventing the drainage tube from being pulled out of the body, preventing the situation that the drainage tube is pulled to cause pain of patients from occurring, and conveniently and simply opening a cover to conduct observation, medicine changing and cleaning care on drainage wounds.

The invention relates to the technical field of irrigation for afforestation of a city, in particular to an intelligent management system for afforestation of a city. The intelligent management systemcomprises a railing placed at the periphery of a tree lawn, a soil moisture detection device, a water spraying device and a server, wherein the soil moisture detection device and the water spraying device are in long-range communication connection with the server; the water spraying device is arranged on the railing; the soil moisture detection device is arranged in the tree lawn, used for collecting soil moisture information, and transmitting the soil moisture information to the server; and the controller is used for controlling the water spraying device to spray water when receiving a triggering electrical signal of a distance sensing module, is also used for receiving a control signal generated by the server according to the soil moisture information through the radio communication module, and is used for controlling the water spraying device to spray water according to the control signal. When being used for watering afforestation plants, the intelligent management system can reduce waste of water resources, and besides, can wash dust on the plant leaves, so that the photosynthesis of the plants can be guaranteed.

An actuating handle for wing-like structural elements, such as windows, doors and the like, comprises a handling part (10), a driver element (20), a receiving sleeve (30), a clamping device for clamping the driver element (20) in the receiving sleeve (30) and a force-exerting device (40) acting on the clamping device. The clamping device comprises a first clamping frame (33a) and a second clamping frame (33b) which are arranged opposite each other and on both sides of the driver element (20) and are pivotable in opposite pivoting directions. The clamping frames (33a, 33b) exert a clamping force on the driver element (20), the clamping force preventing the handling part (10) from being pulled off the driver element (20).

Provided is a lip type seal element wherein a resin-made second lip seal member, which is a component of the lip type seal, can be effectively prevented from detaching radially inward from between a case and a backup ring by being dragged by a shaft when this shaft is being inserted. To achieve this, the lip type seal comprises a cartridge to be fit into the inner circumference of a shaft hole, a first lip seal member, a case, the resin-made second lip seal member, the backup ring, and an adapter. A protrusion section is provided in a partial portion of the circumference of a first flange section of the case. This protrusion section engages with the second lip seal member, thereby preventing the second lip seal member from turning with respect to the case and from detaching radially inward. Also, at the same time, a projecting section is provided in a partial portion of the circumference of the flange section of the backup ring. This projecting section engages with the second lip seal member, thereby preventing the second lip seal member from turning with respect to the backup ring and from detaching radially inward.