209results about How to "Change support height" patented technology

The invention discloses an underground pipeline box culvert. The underground pipeline box culvert comprises sequentially-connected box culvert units. Fire disaster expansion gaps are reserved between the box culvert units. Each box culvert unit comprises an inverted-U-shaped upper cement cover plate, a middle cement partition plate, a cement base plate and a pipe support installed on the vertical surfaces of the inner side of the upper cement cover plate and / or the vertical surfaces of the middle cement partition plate, wherein the upper cement cover plate, the middle cement partition plate and the cement base plate are matched, the lower end of the upper cement cover plate and the cement base plate are matched on the two transverse sides of the box culvert in the longitudinal direction of the box culvert in an embedded and sleeved mode, and the embedded, sleeved and matched structure A comprises fire disaster expansion gaps formed in the transverse direction of the box culvert; the lower end of the middle cement partition plate and the middle of the upper side of the cement base plate are matched in the longitudinal direction of the box culvert in an embedded and sleeved mode; the upper end of the middle cement partition plate and the middle of the lower side of the upper cement cover plate are matched in the longitudinal direction of the box culvert in an embedded and sleeved mode, and the embedded, sleeved and matched structure B comprises fire disaster expansion gaps formed in the height direction of the box culvert. By means of the underground pipeline box culvert, cracking and collapsing, caused by expansion of concrete coarse aggregate, of a box culvert structure during a fire disaster can be avoided, the transport cost and the installation cost are low, the fireproof limitation of the box culvert is high, and the pipe supports bring convenience to pipeline installation.

The invention relates to a single column lift, which comprises a base and a column fixed on the base, a lifting arm is slidably connected to the column, and a beam is fixed at the rear of the lifting arm, and the two ends of the beam pass through the There is a group of rear support arms locked by the locking hoop; two groups of front support arms are symmetrically installed on the front end of the lifting arm through the support arm locking device; each group of the rear support arms and each group of the front support arms The front ends are respectively detachably equipped with extension sleeves, and each set of extension sleeves is inserted with a double-screw support pad assembly. The invention can realize the lifting of the vehicle, and the lengthening sleeve can quickly adjust the length of the front and rear support arms, which is suitable for different vehicle models; the double-screw support pad assembly can quickly adjust the support height, and its structure is simple, easy to adjust, and the scope of application wide.

The invention relates to a plastic greenhouse steel structure framework installation construction method. The method mainly comprises the following steps of installation preparation, frame installation, soil burying, inspection and acceptance and other processes. A steel structure framework positioning and righting device used in the method comprises a bottom plate, a rotating device, a lifting device, a clamping device and a locking device. The method can solve the following problems existing in the installation operation of an existing plastic greenhouse: a, when a traditional plastic greenhouse is installed, after a steel structure is inserted into soil, a supporting column needs to be used for supporting the steel structure to ensure the stability of the steel structure, the supportingcolumn cannot stably support the steel structure, the steel structure is prone to collapse, and safety accidents are prone to occurring; and b, when an existing plastic greenhouse supporting device supports the steel structure, the steel structure cannot be stably supported, the supporting angle and height cannot be adjusted, and the supporting quality of the steel structure can be improved.

The invention discloses an adjustable movable agricultural seedling transplanter, which comprises a seedling picking shovel, a water tank and a handle. A first movable rod is arranged on the top of the seedling picking shovel, a movable hole is arranged on the side face of a second movable rod, a movable connecting frame is arranged on the inner side of the movable hole, a spray head is arranged at the lower part of the movable connecting frame, a movable pressure silo is arranged on the upper part of the movable connecting frame, a reset spring is arranged on the inner side of the movable pressure silo, a water inlet is arranged on the lateral upper side of the movable pressure silo, the water tank is located at the end of a connecting pipe, the handle is located above the first movable rod, an adjusting sleeve rod is arranged at the lower part of the handle, and a stretching spring is arranged on the inner side of the adjusting sleeve rod. The adjustable movable agricultural seedlingtransplanter is equipped with the first movable rod and the second movable rod, the seedling picking shovel on both sides can be driven to open and close at a suitable angle during the application ofthe device, so that the soil can be excavated and clamped at the same time from both sides of the seedling.

The invention discloses a supporting component and detection equipment, relates to the technical field of glass substrate detection, and is used for improving the detection accuracy of glass substrateverticality. The invention has the main technical scheme that the supporting component comprises a base, a supporting part and a lifting mechanism, wherein the lifting mechanism comprises a telescopic airbag and an inflation and deflation component; the bottom of the telescopic airbag is connected to the base; the top of the telescopic airbag is connected to the supporting part; and the inflationand deflation component is connected to the telescopic airbag for inflating or deflating the telescopic airbag so as to regulate the supporting height of the supporting part.

The invention discloses an end balance support device for agricultural tractor carriages, which comprises a triangular block and a hollow shell. The bottom of the side of the triangular block is provided with an insert block structure integrated with it. Two ends of one end of the insert block structure The side is provided with a position-limiting and fixing mechanism integrated with it. The interior of the center of the triangular block is provided with a rectangular insertion hole communicating with its surface, and the interior of the triangular block is provided with a through-hole structure that communicates with the rectangular insertion hole and the outside world. A rectangular block is inserted into the interior of the rectangular insertion hole. When the present invention is working, it can be directly inserted into the herringbone triangle at the end of the carriage, which is very convenient in use. In addition, the device has the function of adjusting the support height, and it is very convenient to disassemble and assemble with the machine head. In addition, the device can effectively ensure the stress of the internal thread structure, prevent thread damage caused by force overload, and has strong practicability.

The invention discloses a building construction supporting device with a damping function. The building construction supporting device comprises a base, wherein a concrete reinforcing layer is arranged on the inner side of the base; an outer sleeve is arranged on the inner side of the concrete reinforcing layer; an inner sleeve column matched with the outer sleeve is arranged on the inner side ofthe outer sleeve in a sleeving mode; a fixing seat is arranged in the middle of the top of the inner sleeve column; a sleeve is arranged in the middle of the interior of the fixing seat; an inner sleeve matched with the sleeve is arranged on the inner side of the sleeve in a sleeving mode; and a spring A connected with the sleeve is arranged at the bottom of the inner sleeve. According to the building construction supporting device with the damping function, through sleeving connection of the outer sleeve and the inner sleeve column, during attaching supporting of the device, a pressing damping assembly and an attaching damping assembly are combined with each other and matched in a linkage mode, so that the supporting effect and strength of the device are greatly improved, impact force andvibration force which are generated during supporting are relieved, the overall structural strength of the device is enhanced, and the buffering function and the compression resistance effect of thedevice are improved.

The invention discloses a device for tunnel excavation and unloading. The device comprises a center shaft, support structures and steel tube pieces, wherein the two or more steel tube pieces are arranged and are arc-shaped pieces; the radians of the steel tube pieces are compatible with the inner wall of a tunnel to be simulated; the two or more steel tube pieces are sequentially stuck on the inner wall of the tunnel to be simulated in a surrounding way, and a cylindrical inner cavity is formed by the two or more steel tube pieces; the center shaft is arranged at a central axis of the cylindrical inner cavity; each support structure comprises a connecting rod and support rods respectively connected with the two ends of the connecting rod; the connecting rods are fixedly installed on the center shaft by means of the support rods; bearings are also installed on the connecting rods; the bearings are connected with the inner tube walls of the steel tube pieces in a sliding support way. Thedevice for tunnel excavation and unloading has the beneficial effect that the device can well replace a water bag and wax in the traditional scheme, thus realizing first loading and then excavating.

The invention relates to a guitar saddle which comprises a tailpiece, a passing slider and a string mounting block. The guitar saddle is characterized in that the passing slider and the string mounting block are mounted on the tailpiece in a front-and-back direction; the passing slider is provided with a plurality of pairs of steel balls; and the steel balls in each pair abut against each other. The guitar saddle provided by the technical solution has advantages of small length, small size and small weight. Furthermore the guitar saddle can reduce string wearing and prolong service life of the string.