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131results about How to "Improve support" patented technology

Roadway support device for dynamic pressure roadway and retaining roadway along goaf

The invention discloses a roadway support device used for a dynamic pressure roadway and a retaining roadway along a goaf. The device comprises a hollow steel pipe support, wherein the hollow part of the hollow steel pipe support is a concrete accommodating space; a grouting port which is communicated with the hollow part of the hollow steel pipe support is formed in the lower part of the hollow steel pipe support; a vent hole which is communicated with the hollow part of the hollow steel pipe support is formed in the top of the hollow steel pipe support; the concrete accommodating space of the hollow part of the hollow steel pipe support is filled with concrete concretion; further, a pressure avoiding layer is arranged between the steel pipe support and a roadway top plate; a pillar shoe is generally arranged between the steel pipe support and a roadway bottom plate. According to the support device, the hollow steel pipe support is filled with the concrete concretion, so that the support device has the advantages that the supporting force is large, the stability is good, the construction speed is rapid and the repeated use is realized, and the support device is capable of effectively supporting the dynamic pressure roadway and the retaining roadway along the goaf.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Travel pillow

A travel pillow for supporting the head of a person when seated comprises a generally U-shaped frame having two side members and a rear member, and a padded generally U-shaped cushion fixed with the frame. In one embodiment, the pillow includes a plurality of cushions each fixed along the frame. The frame and cushion may include a plurality of mutually-aligned ventilation apertures therethrough to cool the person's neck and head. The frame may include a plurality of connectable, size-adjustable, or hinged segments for allowing the pillow to be collapsed for storage or transport. In one embodiment, the frame is replaced by a plurality of rigid grommets fixed about each ventilation aperture, or a pair of lateral frames at side sections of the pillow. A travel pillow includes a resilient inner frame having a rear portion and two side portions, and U-shaped outer cushion fixed about the inner frame and including a rear portion and two side portions. Each side portion, and optionally the rear portions, includes at least one transverse air apertures therethrough. Each side portion of the inner frame further includes a forward end. The side portions may each include a drawstring aperture at the forward end for receiving a drawstring having two halves, each of which being fixed at a proximal end thereof at the drawstring apertures and being mutually and selectively fixable at distal ends thereof at one part of a two-part mechanical fastener. A flexible cover that has an opening therethrough into which the inner frame and the outer cushion are inserted may be included that has at least one ventilation area through which air may travel.
Owner:AZUROUS INC

Stereotyped operation platform of elevator shaft and operation method

The invention discloses a stereotyped operation platform of an elevator shaft. The direction toward a door opening of the elevator shaft is used as the forward direction, and the operation platform comprises a platform panel, a horizontal framework, a supporting framework and at least two lower side supports, wherein the platform panel and the horizontal framework are horizontally arranged and areof rectangular structures matched with the cross section of the inner wall of the elevator shaft, the bottom of the platform panel is welded to the horizontal framework, the bottom of the horizontalframework is welded to the top of the supporting framework, all the lower side supports are fixedly connected to the lower part of the front side of the supporting framework at intervals in the left-right direction, a plurality of round steel hanging rings penetrating through the platform panel are welded to the horizontal framework, and at least two groups of adjustable supporting structures arefixedly connected to the rear side part of the horizontal framework. According to the stereotyped operation platform, the structure is improved on the basis of a traditional elevator shaft operation platform, the lower side supports and the adjustable support structures are added, and the operation platform is ensured to be fixed firmly in the elevator shaft; and moreover, an elevator shaft protection structure is additionally arranged, the construction is safe, the turnover utilization is realized, and the cost is low.
Owner:THE SECOND CONSTR ENG CO LTD CCSEB
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