42results about How to "Avoid drooping" patented technology

A hanger includes an elongated member having a rod with a plurality of positioning portions spaced in a vertical direction. An engaging portion is formed on a bottom of the rod for engaging with an engagement portion. A coupling block includes a connecting head. The coupling block further includes a body and a resilient plate that are located below the connecting head. The body and the resilient plate together define a passageway having an opening in a lower end thereof. The rod is slideable in the passageway in the vertical direction. The resilient plate includes a free end having a hook that is spaced from the body. At least a portion of the hook extends into the passageway. The hook is releasably engaged with a selected one of the positioning portions. The resilient plate is operable to disengage the hook from the positioning portions.

The invention relates to a metal 3D printer which comprises a rack, a working table, a working table moving mechanism, a printing head moving mechanism, a printing head, a feeding mechanism and an electric control box. The metal 3D printer is characterized in that the working table moving mechanism comprises a working table transverse moving mechanism driving the working table to move transversely, a working table longitudinal mechanism driving the working table to move longitudinally, a working table vertical rotating mechanism driving the working table to rotate vertically, and a working table horizontal rotating mechanism driving the working table to rotate horizontally. The printing head moving mechanism comprises a printing head vertical linear moving mechanism driving the printing head to move vertically, a printing head horizontal rotating mechanism driving the printing head to rotate horizontally, and a printing head vertical rotating mechanism driving the printing head to rotate vertically.

The invention relates to a lifting supporting wheel assembly and a cantilever sliding door, and belongs to the technical field of sliding doors. The lifting supporting wheel assembly is characterized by comprising a case, a slider-crank mechanism, a drive mechanism and a lifting wheel; the case is a hollow cavity with an opening in the bottom face, and a guide rod is transversely arranged in the case; the slider-crank mechanism comprises a slider, a crank and a connecting rod connecting the slider and the crank through two rotating pairs; the slider is arranged on the guide rod in a sliding and sleeving manner, the upper portion of the crank is rotationally connected to the case, and the lower portion of the crank is hinged to the lifting wheel; and the drive mechanism is used for driving the slider to slide. Compared with the prior art, the lifting supporting wheel assembly and the cantilever sliding door have the following beneficial effects that the slider-crank mechanism can be driven by the drive mechanism to run, and meanwhile the lifting wheel is driven to ascend and descend. When the lifting wheel abuts against the ground, a cantilever door body can be prevented from hanging down and deforming. Meanwhile, the lifting wheel can be folded upwards and hung above the ground, the suspension vision effect of the cantilever door body cannot be affected, or stable running of the door body cannot be hindered.

An adjustable structure is described herein according to various embodiments, including an inner tube member and an outer tube member. The inner tube member and the outer tube member are configured to move in at least one of a telescoping direction or a rotation direction with respect to one another. The adjustable structure further includes a first frictional element between the inner tube member and the outer tube member. The first frictional element provides friction in the telescoping direction. Furthermore, the adjustable structure includes a second frictional element between the inner tube member and the outer tube member. The second frictional element provides friction in the rotational direction.

The invention discloses a locking hook assembly for hooking and locking a first object and a second object in relative movement. The locking hook assembly comprises a first locking hook and a second locking hook which are respectively arranged on the first object and the second object, and the first locking hook and the second locking hook are oppositely arranged and can elastically move, wherein by relative moment of the first object and the second object, the relative slip of the first locking hook along the second locking hook enables the first locking hook and/or the second locking hook to elastically move, so that the first locking hook can be selectively hooked and locked with or separated from the second locking hook. The invention also discloses a folding arm support of an engineering machine using the locking hook assembly. Sagging of a lower joint arm when the folding arm support is in a folded state can be effectively prevented. In addition, the invention also discloses concrete pumping equipment using the folding arm support of the engineering machine.

The invention discloses a suspension-free integrated ceiling. The suspension-free integrated ceiling comprises gusset plates, staggered floor beams, side shrinking strips, keels and electric appliance hangers; each gusset plate comprises a gusset plate plane, strengthening ribs, a gusset plate clamping slot and a gusset plate fixing slot; each staggered floor beam comprises a first splicing buckle, a first leveling structure, a first clamping slot, a first strengthening slot, a second splicing buckle, a second leveling structure and a gusset plate bearing platform; each side shrinking strip comprises a side shrinking splicing buckle, a side shrinking leveling structure and a side shrinking gusset plate bearing table; each keel comprises a first flatting structure, a second flatting structure, a bearing slot, a first strengthening frame, a second strengthening frame, splicing clamping slots and a screw installation slot. By means of the suspension-free integrated ceiling, the step of hanging installation suspension rods can be avoided in the staggered floor beam installation process, and the integrality and the attractiveness of overall indoor ceiling installation can be met.

The invention discloses a coating machine which comprises a rack, a coating head, a comma doctor roll, a glue retaining mechanism and a driving mechanism, wherein the comma doctor roll and the glue retaining mechanism are erected on the rack; the coating head is arranged at a glue scraping position of the comma doctor roll; the comma doctor roll is positioned above the glue retaining mechanism; an output shaft of the driving mechanism is in transmission connection with the comma doctor roll; and a clamping mechanism is arranged on the comma doctor roll and is used for clamping the comma doctor roll. According to the clamping mechanism, the comma doctor roll is supported, so that the comma doctor roll can be used for a long time and does not easily sag or deform, and the coating quality of the product can be effectively guaranteed.

The invention relates to the technical field of clamps, in particular to a glue spraying clamp. The glue spraying clamp comprises a hollow-out bracket, a rotary bracket, a vacuum device and a plurality of sucking discs, wherein the rotary end of the rotary bracket is fixedly connected with the hollow-out bracket; the vacuum device is fixedly mounted on the rotary bracket; each sucking disc communicates with the vacuum device through a pipeline, and is distributed on a hollow-out part of the hollow-out bracket; and under a working state, the vacuum device extracts air, so that negative pressureis formed at the working ends of the sucking discs for adsorbing products on the hollow-out bracket. Compared with the prior art, the rotary bracket can be controlled, so that a glue-sprayed productis driven to rotate for performing glue spraying to different areas of a product; and the positions and the angles of the sucking discs can be regulated through the movable pipeline for adsorbing products of different shapes, so that the glue spraying clamp has relatively strong applicable performance.

The invention discloses a rotary welding device for preventing the middle part of a tower crane base section from drooping during welding, which comprises a base section, and further comprises a driving mechanism, a left support, a middle support, a right support and a rotary frame, the left support and the right support are fixedly arranged on the left side and the right side respectively, the driving mechanism is fixedly arranged on the left support, the middle support comprises a supporting seat and a supporting rotary drum, and the supporting seat is fixedly arranged on the supporting rotary drum. The supporting seat is fixedly arranged at the middle position between the left support and the right support, a plurality of rollers capable of rotating freely are fixedly arranged on the supporting seat, the supporting rotating cylinder is placed on the rollers, the outer circle of the supporting rotating cylinder is in rolling contact with the rollers, the rotating frame penetrates through the supporting rotating cylinder and is fixed to the supporting rotating cylinder in the radial direction, and the left end of the rotating frame is fixedly connected with the driving mechanism. And the right end is rotationally connected with the right support. The motor is used for driving the base joint to rotate, supporting force can be applied to the middle of the base joint when the base joint is static and rotates, the middle of the base joint is prevented from drooping and deforming, and it is ensured that the product quality reaches the expected quality standard.

The invention discloses a method for reducing the negative bending moment of a T-type rigid bridge. The method comprises the steps that in the design stage, an upward jacking load design value is calculated according to a counter force design value of side pier supports and a set reducing value of the negative bending moment of a main beam arranged at a main pier, and an upward jacking displacement design value sdesign is calculated according to the upward jacking load design value; in the construction stage, the upward jacking displacement design value sdesign is corrected according to a construction error of the height of the cantilever end of the T-type rigid bridge to obtain an actual upward jacking displacement value sactual, an actual upward jacking load F is determined according to the actual upward jacking displacement value sactual, then a jack is adopted to apply the actual upward jacking load F at the cantilever end of the T-type rigid bridge, and the T-type rigid bridge is made to meet the requirement of a bridge line. According to the method, the negative bending moment of the main beam arranged at the bridge pier is reduced, stress is reasonable, and materials are saved; the counter force of the side pier supports is appropriately increased, and disengaging and dropping of the side pier supports can be effectively prevented; main beam drooping deformation generated during construction is effectively solved, and the driving comfort is improved.

The invention provides a grid structure, a panel assembly and an air conditioner. The grid structure comprises grid bars, a grid frame and clamping hooks, wherein the multiple grid bars are arranged,the grid bars are arranged on the grid frame, first clamping grooves are formed in the grid frame, one ends of the clamping hooks are connected with the first clamping grooves in a clamped mode, and the other ends of the clamping hooks are provided with clamping parts which are connected with a fixing base for fixing the grid structure in a matched and clamped mode. According to the grid structure, the first clamping grooves are formed in the grid frame where the grid bars are installed so that the grid structure can be fixed through penetrating arrangement of the clamping hooks, and then thegrid structure can be conveniently disassembled; and a grid can be fixed by arranging the plurality of first clamping grooves and clamping hooks in a matching manner, so that the grid is prevented from drooping and deforming, and meanwhile, the ventilation area is increased.

The invention provides a double-cross-beam UV flat plate printing machine. The machine comprises a machine frame, a nozzle device and an ink supply device; a worktable is arranged on the machine frame; two Y-axle support beams are arranged on the upper surfaces of two ends of the worktable separately; two parallel X-axle cross beams are arranged above the two Y-axle support beams; spraying cars are arranged on the lower surfaces of the adjacent ends of the two X-axle cross beams; at least one Y-axle guide rail is arranged on the outer walls of the two Y-axle support beams; at least one spraying car clamping groove combined with the Y-axle guide rails is arranged on the inner walls of the spraying cars; the spraying cars can slide relative to the Y-axle support beams; the inner walls of thetwo X-axle cross beams are each provided with at least one X-axle guide rail; and the nozzle device can slide relative to the X-axle cross beams. The structures of the two X-axle cross beams are adopted to effectively prevent the dropping deformation of the X-axle cross beams caused by the gravity of the nozzle device as well as self-weight of the X-axle cross beams, so that the stability of theX-axle cross beams is not changed, and the printing quality is improved advantageously.

The invention relates to strong viscous mouse adhesive. The strong viscose mouse adhesive is used for catching mice and is characterized by comprising, by weight, 12-18 parts of naphthenic oil, 10-15 parts of SEBS (styrene-ethylene/butylenes-styrene block copolymers) HS105, 15-20 parts of SEPS 2825, 18-25 parts of No.1 C5 petroleum resin, 12-18 parts of pentaerythritol ester 145 and 14-30 parts of hydrogenated petroleum resin FP100. The strong viscous mouse adhesive has the advantages that the strong viscous mouse adhesive is good in resilience, tensile property and weather resistance, free of vertical flow phenomena and stable in performance, and the viscosity of the strong viscous mouse adhesive can keep unchanged for a long time.

An embodiment of the present invention provides a transition device, including a transition device main body, the transition device main body is arranged between an upstream slab conveyor belt for conveying slabs and a downstream plate for conveying slabs along the slab conveying direction. Between blank conveyor belts. The transition device further includes: a clamping portion for clamping the transition device body portion; and a tensioning mechanism for driving the clamping portion to tension the transition device body portion. Embodiments of the present invention also provide a slab conveying system comprising the transition device.

The invention discloses a fastening connection structure and a ceiling installation structure. The fastening connection structure comprises a fastening cap, a fastening nail column and an elastic piece. The fastening nail column is arranged on one side of the fastening cap, a mounting cavity is formed in the fastening nail column, the mounting cavity penetrates through one end, connected with the fastening cap, of the fastening nail column, and a plurality of positioning parts are arranged on the outer side wall of the fastening nail column in the length direction of the fastening nail column; the elastic piece is arranged in the installation cavity, one end of the elastic piece is connected to the closed end of the installation cavity, and the other end of the elastic piece is connected with the buckle cap. The invention aims to solve the problem of abnormal sound caused by loosening and deformation of the automobile roof due to self-weight sagging.