38results about How to "Adjust the size of the force" patented technology

The invention relates to a device for separating magnetic minerals milled by milling equipment in the industries of metallurgy, mine, chemical industry and the like, in particular relates to a device for magnetic separation of mineral powder extruded by a high-pressure roller mill, and concretely relates to a multi-feeding-belt magnetic separator. The multi-feeding-belt magnetic separator comprises a belt pre-separation mechanism, a belt conveying mechanism and a belt tail-separation mechanism which are arranged from top to bottom, wherein the belt pre-separation mechanism comprises more than two stages of belt magnetic separation mechanisms which are arranged in an overlapped mode; each belt magnetic separation mechanism comprises a transmission wheel, a magnetic roller and a magnetic separation belt sleeving the transmission wheel and the magnetic roller; a magnetic system is arranged inside a lower belt of the magnetic separation belt adjacent to the belt conveying mechanism; and the magnetic field of the magnetic system covers the discharge end of the belt conveying mechanism. The multi-feeding-belt magnetic separator is simple in structure, large in treatment amount and capable of simultaneously considering the separated ore grade and tailing rate; the magnetic system structure of each part can be sufficiently and reasonably utilized through a reasonable structure layout; and under the condition of guaranteeing the magnetic separation effect, the treatment capability is high, and the equipment is compact in shape and small in occupation area.

The embodiment of the present invention discloses an edge sealing device for gypsum board, which is arranged on both sides of the gypsum board. Water supply device, origami device, positioning device and cutting device, the origami device includes origami board, the positioning device includes an end positioning roller, a side positioning roller and a positioning brush, the end positioning roller and the end of the gypsum board The two side positioning rollers are opposite to each other, and the two side positioning rollers are opposite to the two sides of the end of the gypsum board. The positioning brush is fixed on the frame through the support frame, and a set of edge-sealing pressing rollers are used to position the edge-sealing, and then the positioning brush is used to press the edge-sealing tape to stick the edge-sealing tape on the plate, instead of the conventional method. Three sets of edge-sealing rollers can reduce the pressure on the gypsum board while achieving a good edge-sealing effect, avoid the core air holes at the edge-sealing position at the end of the gypsum board from being crushed, and prevent paper stripping.

The invention belongs to the technical field of forming equipment for concrete structures at the bottom of building walls, in particular to a formwork for forming the bottom of an indoor waterproof and moisture-proof filled wall, including a formwork group and a supporting mechanism. The formwork group includes two formworks arranged in parallel, and the support The mechanism includes an outer fixing part and an inner supporting part. The outer fixing part includes a horizontal connecting rod, and the two ends of the connecting rod are respectively fixedly connected with vertical supporting rods. The supporting rods are attached to the outside of the formwork. A horizontal locking adjustment piece is connected between the middle parts, and the inner supporting piece includes a cross bar and a stop bar vertically fixedly connected to the cross bar. The cross bar is against the top of the formwork, and the stop bar is against the inner side of the formwork. This solution solves the problems in the prior art that the formwork is not easy to be reinforced when the wall bottom is formed in reverse sill, and the problem that a large amount of internal support is consumed in the formation of the reverse sill.

The present invention provides a movable false stage mouth, aiming to solve the problem that the slide rails or stage floor used for the side pieces in the prior art are seriously damaged due to the force of the side pieces, including the left side piece, the right side piece, The upper piece installed between the left side piece and the right side piece and arranged horizontally, the left side piece includes an upper section, a lower section, and a connecting piece between the upper section and the lower section; the connecting piece includes an upper cuboid, which is fixed at the lower end of the upper cuboid Lower cuboid; the upper end of the upper cuboid is provided with a connecting hole with a rectangular cross section, and the lower end of the upper section is provided with a bump matching the hole; the upper end of the lower section is provided with a lower hole matching the lower cuboid; the lower hole is provided with a spring, the spring Located at the lower end of the lower cuboid; the right side piece has the same structure as the left side piece. In the present invention, the force on the stage floor and the guide rails is small, and they are not easily deformed and damaged; in addition, springs are arranged between the upper and lower sections, and the force on the stage floor and the guide rails can be adjusted according to the specifications of the springs.

A stepless rotational and positioning device is provided, which facilitates the rotation of a display and simultaneously provides stable support. The stepless rotational and positioning device comprises a pedestal, a rotary shaft and a positive force supplier. The pedestal comprises a shell and a base frame and the rotary shaft comprises a stress terminal and a frictional force seat, wherein the shell comprises at least one first friction surface which is arranged in correspondence to a second friction surface formed by the upper surface of the frictional force seat of the rotary shaft; the frictional force seat is rotatably equipped and contained inside the shell and adapted to the axial movement. The positive force supplier is equipped between the frictional force seat and the base frame and adapted to provide a positive force to axially compress the frictional force seat, so as to allow the contact between the first and the second friction surfaces.

The invention discloses a device and method for testing the tension, compression and creep of inter-hole rock bridges by using an expansion agent. The interior of the rock bridge is filled with an expansion agent; a rock bridge is formed between two adjacent small holes, and distributed optical fibers, transparent grid paper or stress monitoring points for measuring the stress on the rock bridge are arranged in different areas of the rock bridge; Inside the small hole, steel plates are placed on both sides close to the rock bridge, and two adjacent steel plates are connected with steel bars. This method can monitor and measure various mechanical parameters in real time, and give real-time feedback on the stress of rock samples. This method is simple in operation, low in cost, and simple in structure, and can be applied to tensile and compressive molds for rock samples of various shapes and sizes. Quantitative detection has extensive engineering practical significance and application prospects.