37results about How to "Meet mechanical requirements" patented technology

The invention discloses a special soil subgrade structure and a construction method thereof. The special soil subgrade structure comprises a special soil, a triple-combined soil, a cohesive soil, a gravel cushion and a triple-combined soil base course, wherein bamboo filaments are additionally mixed in the triple-combined soil. According to the invention, the bearing capacity and the stability of the special soil subgrade structure can be improved; influences of extraneous water, such as side slope seepage, surface water, underground water and the like, on special soil can be also effectively blocked; the special soil sensitive to water, such as an expansive soil, a collapsible loess, a red clay, a salinized soil and the like, can be directly used for laying of the subgrade; building fillers can be sufficiently utilized to avoid spoiling of excavation soil, borrowing of fillers and transferring of the fillers; and the adoption of a novel bamboo material as reinforcing and slope-protecting materials adapts to a demand that the civil construction industry is developed towards low-carbon, energy-saving, environment-friendly and sustainable directions. Therefore, the special soil subgrade structure disclosed by the invention can save project investment and is energy-saving and environment-friendly.

The invention provides a shoe making method applying three-dimensional sole data. The shoe making method comprises the following steps: a step a, scanning a sole and obtaining a determined sole three-dimensional dimension through a sole three-dimensional data processing system; a step b, according to the obtained sole three-dimensional dimension, matching an existing shoe tree to obtain an instep dimension; a step c, automatically processing the sole in a three-dimensional shape according to the sole three-dimensional dimension; a step d, adopting a conventional lasting surface, pressure adhesive and the sole in the three-dimensional shape to adhere and make a shoe; a step e, pushing out the shoe tree to obtain a three-dimensional shoe which is fitted with a human sole in three-dimensional dimension data, or combining the steps d and e to perform conventional shoe making by adopting the conventional lasting surface, the pressure adhesive and an adaptive existing shoe tree, pushing out the shoe tree and putting the shoe sole in the three-dimensional shape into a shoe. The shoe making method solves contradiction between mass production and high-cost personalized customization, and realizes quickly manufacturing personalized customization shoes in a large-scale manner with a bit high cost.

The invention relates to a switching rocker (1) of a shifting device for a gear wheel gear change box, particularly for motor vehicles, comprising two half parts (2) forming a selector gate (19), the parts being rigidly connected to each other by means of a connecting element (3). The invention furthermore relates to a method for producing such a switching rocker, wherein the two half parts (2) forming a selector gate, the parts each being provided with an insertion tab (10) for a pivoting support of the switching rocker and an insertion tab (12) for receiving sliding pieces, are positioned by means of the insertion tabs and rigidly connected to each other by a connecting element (3).

The invention discloses an on-pole permanent magnet vacuum breaker with a manual switching-on and switching-off device. The on-pole permanent magnet vacuum breaker with the manual switching-on and switching-off device comprises three vacuum arc extinguish chambers, the vacuum arc extinguish chambers are connected with a connection rod part through contact springs, the positions, between the middle vacuum arc extinguish chamber and the adjacent vacuum arc extinguish chambers, of the connection rod part are provided with switching-off springs and a connecting lever respectively, the middle of the connecting lever is provided with a shaft, one end of the connecting lever is connected with the connection rod part, and the other end of the connecting lever is connected with a permanent magnet mechanism. The on-pole permanent magnet vacuum breaker with the manual switching-on and switching-off device is characterized in that the position, between the switching-off springs and the middle vacuum arc extinguish chamber, of the connection rod part is provided with the manual switching-on and switching-off device, and the manual switching-on and switching-off device can manually drive the connection rod part to move under the condition of not depending on the permanent magnet mechanism. The manual switching-on and switching-off device is additionally arranged in the on-pole permanent magnet vacuum breaker and is located inside a box of the breaker, energy is obtained manually and is applied on a drive pull rod through force conversion, and the switching-on energy is provided. The on-pole permanent magnet vacuum breaker with the manual switching-on and switching-off device achieves emergency manual switching-off and switching-on operations, the structure is simple, few parts are needed, few fault points exist, and reliability is high.

The invention relates to a type of high-toughness alloy steel, and a heat treatment device thereof. The material is a 25CrMnSi material. The heat treatment device comprises orderly arranged components of: a normalizing furnace in which a temperature can be configured as 920 DEG C +-10 DEG C, and a residence time can be configured as 120 minutes; a quenching furnace in which a temperature can be configured as 880 DEG C +-10 DEG C, and a residence time can be configured as 180 minutes; a quenching tank in which a temperature of a cooled product is configured as 300 DEG C, wherein a cooling medium of a water-soluble quenching liquid is placed in the quenching tank; and a tempering furnace in which a temperature can be configured as 610 DEG C +-10 DEG C, and a residence time can be configuredas 180 minutes. The tensile strength of the material is 850Mpa, the yield strength of the material satisfies 700Mpa, and the hardness HB of the material is 240 to 280. With the material, mechanical requirements of ship-use container lockset material can be satisfied. Also, the material has advantages of low metal cost, good and appropriate strength, good and appropriate hardness, good and appropriate flexibility, and good and appropriate toughness. The heat treatment device has advantages of easy processing, simple equipment, convenient operation, and low environmental pollution.

A container lock product and its heat treatment process and equipment, wherein the product material is 25CrMnSi, and its heat treatment includes: normalizing: temperature 920°C±10°C, air cooling after holding time for 120 minutes; quenching: temperature 880°C±10°C , Water cooling after holding time for 180 minutes; tempering: temperature 610°C±10°C, air cooling after holding time for 180 minutes. At the same time, corresponding heat treatment equipment is provided. The tensile strength of the container lock products obtained by the above heat treatment process and equipment meets: 850MPa, the yield strength meets: 700MPa, and the hardness HB: 240-280, which meets the mechanical requirements of marine container lock products and has low metal cost and good quality. Appropriate strength, hardness, plasticity and toughness, as well as the characteristics of simple heat treatment process equipment, convenient operation, and little environmental pollution.

A prefabricated engineering pipe for municipal tap water comprises an engineering pipe body with a circular-ring-shaped section. The inner surface of the engineering pipe body is coated with a corrosion-resistant coating. A heat-preservation layer is located outside the engineering pipe body. A concrete shell is located on the outer surface of the heat-preservation layer, and the section of the concrete shell is trapezoidal. The outside of the concrete shell is coated with a corrosion-resistant coating. The outside of the concrete shell is coated with the corrosion-resistant coating, so that the corrosion resistance of the prefabricated engineering pipe is improved. The section of the concrete shell is trapezoidal, so that the mechanics requirement of the concrete shell in an underground soil layer is met.

The embodiment of the invention provides a large-load column-free arc-shaped top plate formwork and a construction method thereof. The large-load column-free arc-shaped top plate formwork comprises a spliced steel truss arch structure, wherein the spliced steel truss arch structure is provided with an arc-shaped top wall, a plurality of anti-skid blocks are fixedly arranged on the arc-shaped top wall at intervals, and each anti-skid block is provided with a stopping space; supporting blocks are arranged in the stopping spaces of the multiple anti-sliding blocks in a one-to-one correspondence mode, and a top plate formwork is arranged on the sides, away from the arc-shaped top wall, of the supporting blocks. According to the assembled steel truss arch structure, through the assembled structure in the horizontal direction and the vertical direction, on-site welding operation is not needed, the steel truss arch structure better meets the mechanical requirement of theoretical calculation, waste of materials is reduced, and due to the fact that the steel truss in the vertical direction of the arch structure is necessarily segmented, therefore, the vertical support in a certain area can be independently manufactured or replaced, and maintenance cost and manufacturing cost are low.