11results about How to "Control tightness" patented technology

This utility model discloses a band saw with a tension display device, including a sliding potentiometer. One end of the sliding potentiometer is electrically connected to a digital display screen. A threaded plate is slidably connected to the bottom of the sliding potentiometer, and a potentiometer bracket is fixedly connected to the upper end of the threaded plate. A slider is slidably connected to the top of the sliding potentiometer. An upper wheel shaft is fixedly installed at the center end of one side of the slider, and a hanging plate is fixedly connected to one side of the slider. A groove is opened on the surface of the hanging plate. The band saw with the tension display device of this utility model can control the tension of the saw blade through the rebound force of the spring, thus better controlling the tension of the saw blade. At the same time, the potentiometer push rod can move with the hanging plate through the groove, and the value on the digital display screen changes accordingly. The tension value is displayed in real time by adjusting the position of the upper wheel, making the adjustment more accurate and convenient for customer operation.

The application discloses a kind of semi-automatic coffee machine extraction pressure keeping mechanism including powder pressing handle, transmission gear, lifting frame with vertical rack and fixed ratchet disc;Brewing powder pressing head is installed at the lower end of lifting frame;Powder pressing handle is connected with transmission gear, and transmission gear is engaged with vertical rack, so that when powder pressing handle drives transmission gear, brewing powder pressing head moves up and down with lifting frame;Ratchet disc is provided with one-way ratchet by blocking surface and inclined sliding surface, and lock slot is formed between adjacent one-way ratchet;Control key and lock pin are provided on powder pressing handle, and control key controls lock pin to enter or exit lock slot;During the rotation of powder pressing handle, lock pin enters lock slot and jumps on continuous multiple inclined sliding surfaces with rotation;Blocking surface prevents reverse rotation of powder pressing handle to complete self-locking;It can be rotated smoothly in positive direction, and direction is automatically locked without additional operation, and individualized accurate selection of pressure can be realized.

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The utility model discloses a kind of goat cashmere spinning devices, including receiving support, two symmetrical assembly toothed plates are penetrated in the top of receiving support, assembly slot is set in the both sides of receiving support outer wall, assembly toothed plate both ends are respectively fixedly connected with assembly plate and assembly block, assembly shaft is rotatably connected between two assembly plates, assembly frame is fixedly sleeved on the outer wall of assembly shaft. The utility model, by moving motor drives mobile pulley to rotate, then mobile pulley drives assembly frame on assembly pulley to rotate by belt, then assembly frame also drives two assembly rollers to deflect, so that two assembly rollers further promote the tension of yarn, so that yarn tension does not need manual adjustment, reduce the phenomenon that yarn appears to break, to improve use effect.

The application relates to a backlight module structure of a hybrid liquid crystal display screen and relates to the technical field of hybrid liquid crystal display screens. The backlight module structure of the hybrid liquid crystal display screen comprises a storage assembly mounted in an F frame and a slideable guide. The storage assembly and the inner wall of the F frame form a storage groove for pre-storing UV glue, and the UV glue is output through a communicating outlet. The guide is located at a first position when an optical assembly is not assembled, and the outlet is blocked. In the process of inserting and assembling an optical film and an optical diffusion plate, the guide is forced to slide to a second position, so that the outlet is opened, the UV glue flows out and is bonded to the optical film and the diffusion plate. The structure combines sliding control and structural triggering mechanism, is beneficial to realizing automatic bonding, and improves assembly efficiency and connection stability.

This utility model discloses a quick-locking device for preventing loosening of metal hose connections, including a hook, a buckle, a wire rope, a handle, a switch, a housing, a ratchet, and a pawl. The ratchet and pawl are located inside the housing. The handle is fixedly connected to the ratchet via a rotating shaft. The rotating shaft has a wire rope hole. The wire rope passes through the wire rope hole, with one end connected to the hook and the other end connected to the buckle. The switch is connected to the pawl. When the switch is rotated in a first direction, the pawl can engage with the ratchet for a limited position. When the switch is rotated in a second direction opposite to the first direction, the pawl can release from the ratchet engagement. This utility model simplifies the operation process for preventing loosening of metal hoses and equipment connections, reduces the workload of personnel, improves work efficiency, ensures the connection quality of metal hoses and equipment, and reduces potential risks during operation.

The utility model discloses an automatic cable winding and unwinding device which comprises a bearing frame, the top of the bearing frame is fixedly connected with an assembling support, the side wall of the assembling support is fixedly connected with an assembling motor, and the output end of the assembling motor is fixedly connected with an assembling winding roller. The tail end of the assembling winding roller penetrates through the assembling support and is rotationally connected with the inner wall of the assembling support, and the top and the bottom of the assembling support are both connected with fixing assemblies. According to the device, the fixed rotating shaft on the fixed disc is driven by the fixed motor to rotate, and then the fixed rotating shaft slides in the fixed concentric-square-shaped plate, so that the fixed pushing plate on the fixed concentric-square-shaped plate is pushed to move in the direction of the fixed L-shaped supporting plate, and the fixed arc-shaped plate is also driven to move along with the fixed pushing plate; therefore, the fixed arc-shaped plate controls the cable on the winding and unwinding assembly winding roller to be disengaged and loosened, the tightness of the cable is controlled, knotting of the cable is reduced, and the using effect is improved.

The utility model provides a kind of anti-dripping structure of precision glue dispensing machine, including workbench, the top of the workbench is fixedly installed with mounting bracket, the top of the mounting bracket is fixedly installed with glue storage cavity, the outside of the glue storage cavity is connected with communicating pipe, the one end of the communicating pipe away from glue storage cavity is connected with metering instrument, the bottom of the metering instrument is fixedly installed with connecting column, the outside of the connecting column is provided with glue dispensing assembly, the inside of the glue dispensing assembly is provided with anti-dripping assembly.The anti-dripping structure of precision glue dispensing machine, by setting anti-dripping assembly, the telescopic stroke of electric cylinder can be accurately controlled by motor, the accurate conduction or sealing of through hole one and through hole two is realized, the rotation of the placement groove in extrusion block is driven by motor and connecting block, the through hole one and through hole two are misaligned, the outside of connecting block is tightly combined with the inner wall of extrusion block, and the auxiliary extrusion of press button is cooperated, further block the flow of glue residue, greatly reduce the pollution and scrap of workpiece caused by dripping.

The utility model discloses a side-locking adjustable helmet which comprises a helmet body, a bridle, protection rings rotationally installed on the two sides of the helmet body and sliding self-locking mechanisms arranged on one sides of the protection rings. The protection ring is suitable for being overturned to the front part to protect the jaw and the lips; the sliding self-locking mechanism comprises a sliding rail base arranged on one side of the protection ring and a sliding block assembled in the sliding rail base in a sliding mode. One end of the strap is fixed to the side, away from the sliding self-locking mechanism, of the helmet body, and the other end of the strap and the inner side of the sliding block are assembled in an opening and closing mode through a buckle. The tightness degree of the bridle can be adjusted by pushing the sliding block, and the sliding block can be self-locked and fixed in a normal state. The bridle is tied in a side locking mode, the tightness degree of the bridle can be adjusted by sliding up and down, operation is efficient and rapid, and stability is higher.

The utility model relates to a cold water machine circulation testing arrangement, including first water tank, second water tank and third water tank, the top fixed mounting of first water tank has water pump, and the top of first water tank's front end face is provided with temperature sensor, and the rear end of first water tank is fixedly installed in second water tank, and the front end face of second water tank has the gap with the rear end face of first water tank, and the top of second water tank's rear end face is provided with temperature sensor, and the right side of first water tank is fixedly installed in third water tank, and the right end face of second water tank and first water tank has the gap with the left end face of third water tank, and the top of third water tank is fixedly installed with heater, and the top of third water tank's front end face is provided with temperature sensor, can high -efficient and accurate control the temperature of cooling medium through the setting of heater and temperature sensor, has improved the convenience and security of operation.

This application discloses a water pipe network leakage detection device, belonging to the technical field of water pipe network leakage detection equipment. It includes a data detector, with a detection probe connected to one side via a wire. The data detector contains a Bluetooth module and an earphone jack. A movable box has four wheels at its bottom corners and a door on its front. The device utilizes a track, an electric push rod, and a moving block. The electric push rod activates the moving block, causing it to slide within the track, controlling the detection probe to move downwards and stop at a distance of one millimeter from the ground for detection. The detection data is then transmitted to the data detector. The data detector uses Bluetooth or a wired, noise-isolating earphone to listen for sound and make a judgment. The detection probe moves up and down repeatedly, resulting in high detection efficiency.