9results about How to "Increased connection contact area" patented technology

The utility model relates to the technical field of elevator derricks, in particular to an inward bending steel structure derrick for installing an elevator, which comprises a base, a derrick I and a plurality of derricks II, the derrick I is fixedly arranged at the top of the base, and the plurality of derricks II are fixedly arranged at the top of the derrick I in sequence. A plurality of stand columns and cross beams are arranged in the base, the first derrick and the second derrick, four stand columns distributed in a rectangular shape are arranged in the base, the first derrick and the second derrick, and the cross beams are connected between every two adjacent stand columns through bolts. The stand column is formed by inwards folding a steel plate to form a first bending piece and a second bending piece, the end, away from the second bending piece, of the first bending piece is inwards folded to form a third bending piece, and the end, away from the first bending piece, of the third bending piece is inwards folded to form a first bending connecting piece. According to the utility model, the problems of single structure, insufficient performance and stress concentration of connecting nodes of an elevator derrick upright post additionally arranged in an old community are solved, and the overall strength, stability and safety of the derrick are improved.

The utility model relates to photovoltaic panel installation technical field discloses a photovoltaic panel mounting structure of photovoltaic energy storage system, include: photovoltaic panel, both sides of photovoltaic panel can detachable installation have first locking plate, a plurality of first lock teeth are fixedly connected on the first locking plate.

The utility model provides an electric pipe winding machine compatible with a multi-caliber water hose, and belongs to the technical field of water hose winding. The electric pipe winding machine comprises a moving assembly and a winding assembly, the moving assembly comprises a box body, a first motor, walking wheels, a bottom plate and universal wheels, and the winding assembly comprises a long box, a hand wheel, an inner threaded cylinder, an outer threaded cylinder, a rotating shaft and a second motor. By arranging a long box, a hand wheel, an inner threaded cylinder, an outer threaded cylinder, a rotating shaft and a second motor, the stability of the rotating shaft and the clamp can be kept when the second motor drives the rotating shaft to rotate to wind the water hose by utilizing the large connecting contact area and the large friction force of trapezoidal threaded grooves in the inner threaded cylinder and the outer threaded cylinder; and the situation that the water hose clamped by the clamp is loosened and falls off is avoided, personnel are carried to move and roll together, the rolling efficiency is greatly improved, and manpower is saved.

The application discloses a battery device and a power utilization device, the battery device comprising: a box body having a containing cavity; a battery cell assembly arranged in the containing cavity; a structural beam extending along a second direction and fixed to the box body, and arranged on at least one side of the battery cell assembly in a first direction; and a fixing plate arranged on one side of the battery cell assembly in a third direction, the length of the fixing plate being smaller than the length of the battery cell assembly in the first direction, and the two ends of the fixing plate in the first direction being fixed to the structural beam and the battery cell assembly respectively. In the above technical manner, the anti-expansion effect of the battery cell can be guaranteed, the length of the fixing plate can be shortened, the material consumption and weight can be reduced, the cost can be reduced, the occupied space of the fixing plate in the box body can be reduced, the energy density of the battery device can be improved, the contact area of the fixing plate and the battery cell assembly can be reduced, and the risk of insulation failure of the battery cell can be reduced.

The utility model relates to an electric water heater, it includes shell body, inner container spare and blocking material piece, inner container spare and blocking material piece set up in the installation inner chamber, and the one end of blocking material piece is connected with inner container spare, wherein, the peripheral side of blocking material piece forms and has reinforced outer edge, and reinforced outer edge extends to the direction close to inner container spare, the design of reinforced outer edge can increase the structural strength of blocking material piece, reduce its deformation after receiving the foaming action force, can also reduce the wall thickness of blocking material piece, save production cost, reduce the weight of blocking material piece, in addition, still can increase the connecting contact area with shell body, the installation positioning of blocking material piece in shell body is convenient, improves the connection stability of blocking material piece.

This invention relates to the field of medical device technology, and discloses a 3D-printed humeral prosthesis that preserves the shoulder joint. The prosthesis includes a prosthesis body, with a proximal end for connecting to the humeral head of the patient's own shoulder joint. The proximal end of the prosthesis body is ball-shaped, and a connection area is provided at the top of the proximal end, with multiple nail-like protrusions. The proximal end of the prosthesis body also has through-holes perpendicular to the connection area. The ball-shaped proximal end of the prosthesis body of this invention, with its connection area, connects to the humeral head of the patient's own shoulder joint, preserving the patient's own shoulder joint, maintaining the patient's natural range of motion and function, reducing damage to surrounding tissues, facilitating more natural movement and recovery of daily activities, and improving postoperative function. The ball-shaped connection has a large contact area, and the nail-like protrusion structure in the connection area of ​​the proximal end of the prosthesis body further increases the contact area, making the connection more stable; this contributes to the initial and long-term stability of the prosthesis implantation.

The automobile assembly type steering knuckle comprises a main knuckle rod and an auxiliary knuckle rod, a plurality of sets of tooth columns which are annularly arranged are arranged on the surface of the auxiliary knuckle rod, a tooth inserting groove is formed between every two adjacent tooth columns, a cavity is formed in the main knuckle rod, an extension pipe is installed on the outer side of the cavity, and the surface of the extension pipe is sleeved with a rotary knob ring in a threaded mode. A plurality of groups of tooth columns are also arranged on the inner wall of the cavity of the main section rod in an annular array; and part of the tooth columns are inserted among the tooth inserting grooves. Fixing seats are mounted at the ends of the main section rod and the auxiliary section rod, and metal reinforcing layers are arranged at the end areas of the fixing seats; a rotating block is arranged in the fixing base, second connecting rods on the two sides of the rotating block are rotationally installed in first clamping holes of the fixing base, and first connecting rods on the surface of the rotating block are inserted into second clamping holes of the installation lugs. A mounting seat with a cutting groove and a mounting hole is mounted on one side of the mounting lug, anti-skid patterns are arranged in the mounting hole, and a locking bolt is arranged outside the mounting seat. An assembled structure is adopted, installation and maintenance are convenient, and the connection stability is improved through cooperation of the tooth columns and the tooth inserting grooves.