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PASSIVE ROBOTIC ARM JOINT LOCKING MECHANISM

A passive robotic arm joint locking mechanism. The mechanism comprises: an output assembly, comprising a joint output shaft (2) and a friction disc (5) fixed on the joint output shaft; and a braking assembly, comprising a threaded shaft (7) coaxial with the joint output shaft, a threaded shaft sleeve (4) threadingly connected with the threaded shaft, a turnplate (8) fixedly connected to the threaded shaft, an end cover (9) capable of rotating relative to the turnplate, and a scroll spring (10) applying rotational force to the threaded shaft. One end of the scroll spring is fixedly connected to the end cover, and the other end is connected to the turnplate or the threaded shaft. The threaded shaft sleeve abuts the friction disc. In the absence of any external force, the scroll spring causes the threaded shaft to rotate, further causing the threaded shaft sleeve on the threaded shaft to move towards the joint output shaft, such that the threaded shaft sleeve presses the friction disc, and ...

Cutting and polishing integrated device for bay window guardrail

The invention discloses a cutting and polishing integrated device for a bay window guardrail, and the cutting and polishing integrated device comprises a shell. Through mutual cooperation of a first U-shaped plate, a rolling shaft, a conveying belt, a first rotating shaft, a second rotating shaft, a transmission motor, a connecting base, a first electric push rod, a clamping plate, a fixing plate, a three-jaw chuck, a second electric push rod, a second moving plate, a connecting plate and a third electric push rod, after a worker conveys a guardrail into an inner cavity of a shell, the guardrail is conveyed into the shell; a first electric-hydraulic push rod, a first L-shaped plate and a cutter are matched with each other to cut a guardrail, and a servo motor, a threaded rod, a threaded block and a first moving plate are matched with each other to drive two grinders to move relatively, so that the two ends of the guardrail can be ground at the same time; through the arrangement, cutting ...

Batch full-automatic jujube pit opening machine

The invention relates to a batch full-automatic jujube pit opening machine which comprises a hopper, an arranging mechanism, a crushing mechanism and a screening mechanism which are connected in sequence, the arranging mechanism comprises paired rollers, a profiling brush and a reciprocating pushing unit, the gap between the paired rollers is smaller than the diameter of jujube pits, and a discharging channel is formed in the upper portion of the gap position; the hopper and the profiling brush are sequentially arranged in the material pushing direction and located above the material discharging channel. The reciprocating material pushing unit comprises a material pushing rod which reciprocates along the material discharging channel through a reciprocating driving piece. The crushing mechanism comprises a rotary material roller with a crushing groove and a crushing pressure head vertically matched with the crushing groove, an inlet is formed in one side of the crushing groove and connected ...

Wild jujube harvester

The invention belongs to the field of wild jujube harvesting equipment, and particularly relates to a wild jujube harvesting machine which comprises a machine shell, a rotary disc located in the machine shell and a swing rope penetrating through the machine shell, a hook is arranged at one end of the swing rope, a hand-cranking handle fixedly connected with the rotary disc is arranged on the outer side of the machine shell, and a shifting mechanism is fixed to the other side of the rotary disc. And the shifting mechanism shifts the swing rope by means of rotation of the turntable. According to the wild jujube harvesting machine, the swing rope is hung on branches of a wild jujube tree through the hook, the poking mechanism is manually shaken, the poking mechanism pokes the swing rope and enables the swing rope to pull the branches, the branches are made to vibrate, and therefore wild jujubes are shaken off from the branches, the wild jujube harvesting machine does not need a motor, the ...

Paenibacillus polymyxa dry suspending agent as well as preparation method and application thereof

The invention discloses a paenibacillus polymyxa dry suspending agent as well as a preparation method and application thereof. The paenibacillus polymyxa dry suspending agent is prepared from paenibacillus polymyxa fermentation liquor, a camphor tree bark extract, an auxiliary agent and a filler, the auxiliary agent is composed of a wetting agent, a dispersing agent, an adhesive and a disintegrating agent. The invention further discloses a method for preparing the dry suspending agent, which comprises the following steps of: mixing paenibacillus polymyxa fermentation liquor with the camphor tree bark extract, uniformly stirring to obtain a mixture 1, uniformly mixing the mixture 1 with the wetting agent, the dispersing agent, the adhesive and the disintegrating agent to obtain a mixture 2, coarsely crushing, finely grinding, adding the filler, and spraying and granulating by using a high tower to obtain the dry suspending agent. And performing spray drying. The paenibacillus polymyxa dry ...

Horizontal reaction kettle

... 本实用新型公开了一种卧式反应釜，包括卧式反应釜的釜体，釜体内水平设有驱动主轴，驱动主轴一端与驱动电机相连，釜体内的主轴上设有至少两个螺带式搅拌器，两个螺带式搅拌器轴向反向安装，两个螺带式搅拌器之间形成剪切腔；螺带式搅拌器包括内螺带和外螺带，内螺带中心线沿着以驱动主轴为中心线的圆柱螺旋线绕制而成。本实用新型提供了一种卧式反应釜，解决现有技术搅拌罐体型搅拌效率和搅拌质量不高，结构设计不合理，易出故障的问题。 ...

Pseudo-state attack demonstration system introducing detection efficiency mismatching vulnerability

The invention relates to quantum key distribution, in particular to a pseudo-state attack demonstration system introducing detection efficiency mismatching vulnerabilities, which comprises a QKD transmitting end, a QKD receiving end, a quantum switching unit and a pseudo-state attack demonstration platform, and is characterized in that the QKD transmitting end, the QKD receiving end and the pseudo-state attack demonstration platform are in communication connection with the quantum switching unit; the system is switched between a normal demonstration mode and an attack demonstration mode through the quantum exchange unit; when the system is in an attack demonstration mode, the pseudo-state attack demonstration platform randomly selects a measurement basis for quantum light pulses of a QKD transmitting end to detect to obtain a detection result, introduces a detection efficiency mismatching vulnerability in a QKD system calibration process, generates a corresponding pseudo-state according ...

Wastewater collecting tank convenient for discharging sediment

The utility model relates to a waste water collecting tank convenient to discharge sediment, which comprises a tank body, the tank body is provided with a sediment discharge port, a movable bottom plate is placed on the inner surface of the bottom wall of the tank body, and one end of the movable bottom plate, which is positioned at the sediment discharge port, is hinged with the tank body through a horizontal hinge shaft. The movable bottom plate is connected with a bottom plate lifting mechanism which drives the movable bottom plate to rotate upwards with the horizontal hinged shaft as the axis to incline. When the movable bottom plate is in an inclined state, a sediment collecting groove is formed between the upper surface of the movable bottom plate and the side wall of the tank body, and the sediment discharging port is located in the sediment collecting groove. The utility model aims to provide the waste water collecting tank convenient for discharging the sediment, which can fully ...