41results about How to "Fast support" patented technology

The invention discloses a hand-push type delivery device applied to construction sites. The hand-push type delivery device comprises a vehicle board, a hopper, a single wheel, a handlebar, an inserting unit, a sliding unit and a locking unit, the hopper is located above the vehicle board, the single wheel is fixed under the vehicle board, the handlebar is fixed on the vehicle board, the locking unit is used for fixing the hopper, the inserting unit is fixed on the vehicle board or the handlebar, the sliding unit is used for driving the hopper to move back and forth on the vehicle board, the sliding unit comprises guiding slide grooves arranged in the vehicle board and guiding wheels arranged at the bottom of the hopper, and the guiding wheels are matched with the guiding slide grooves; the hand-push type delivery device further comprises tilting prevention units arranged on two sides of the vehicle board, and the tilting prevention units can be opened downwardly and retracted to the direction of the bottom of the vehicle board. By the aid of the above structure, the hand-push type delivery device can be reliably pulled off on slopes, the hand-push type delivery device is labor saving in unloading and adaptable to different terrains, and the vehicle can be avoided toppling over.

The invention discloses a hand-push type delivery device applied to construction sites. The hand-push type delivery device comprises a vehicle board, a hopper, a single wheel, a handlebar, an inserting unit, a sliding unit and a locking unit, the hopper is located above the vehicle board, the single wheel is fixed under the vehicle board, the handlebar is fixed on the vehicle board, the locking unit is used for fixing the hopper, the inserting unit is fixed on the vehicle board or the handlebar, the sliding unit is used for driving the hopper to move back and forth on the vehicle board, the sliding unit comprises guiding slide grooves arranged in the vehicle board and guiding wheels arranged at the bottom of the hopper, and the guiding wheels are matched with the guiding slide grooves; the hand-push type delivery device further comprises tilting prevention units arranged on two sides of the vehicle board, and the tilting prevention units can be opened downwardly and retracted to the direction of the bottom of the vehicle board. By the aid of the above structure, the hand-push type delivery device can be reliably pulled off on slopes, the hand-push type delivery device is labor saving in unloading and adaptable to different terrains, and the vehicle can be avoided toppling over.

The invention relates to a petroleum pipe inner wall cleaning and drying treater. The petroleum pipe inner wall cleaning and drying treater comprises an inner wall automatic walking device; the inner wall automatic walking device stably walks on an inner wall of a pipe from four directions, has four walking support forces uniformly distributed, is excellent in uniform support performance, and is excellent in stable walking performance; an inner wall rotary cleaning device is mounted at the middle part of the inner wall automatic walking device, can realize high-pressure cleaning function of the inner wall of the pipe, can perform local high-pressure cleaning according to the pipe inner wall demands, is wide in application range, is precise and adjustable in cleaning angle, is fast in cleaning speed, and is high in cleaning efficiency; and an inner wall drying device is mounted on the left side of the inner wall automatic walking device, can realize a quick drying function of the inner wall of the pipe, and can perform local quick drying according to actual conditions of the inner wall of the pipe. The petroleum pipe inner wall cleaning and drying treater can realize continuous and stable cleaning and drying functions of the inner wall of a petroleum pipe, has no need to replace equipment for operation during the process, is fast in treatment speed of the inner wall of the pipe, and is high in treatment efficiency of the inner wall of the pipe.

The invention discloses an anti-emergency-brake bus lifting ring. The lifting ring comprises a shell, wherein the shell is of a circular barrel-shaped structure; a plurality of cylinders are symmetrically arranged on the inner wall of the shell, a piston is hermetically and slidably connected to the inner wall of each cylinder, and each piston is fixedly connected with a push rod; the side, away from the corresponding piston, of each push rod is fixedly connected with an arc-shaped plate. The lifting ring has the advantages that when a bus takes a sudden turn and brakes, a standing passenger can tightly hold and pull a holding ring with force subconsciously, a round plate is driven to move downwards to make a straight rod extrude a baffle, and a U-shaped plate extends into a hard tube, sothat the effective cross-sectional area of liquid flowing in the straight rod and the hard tube is reduced, and the amount of a fluid which can flow through in unit time in the hard tube is greatly reduced, that is, the fluid in each cylinder cannot be rapidly circulated. Therefore, the holding ring generates large supporting force on the hands of the passenger, and the situation that the passenger falls down is avoided.

The invention provides a liftable, foldable and extensile airborne advanced support device. The device comprises a lifting device and an advanced support. The lifting device comprises a movable base and a lifting support. The lifting support is fixed on the movable base. The advanced support is fixed on the lifting support and comprises multiple support racks which are hinged onto each other. From the middle of the length direction of the advanced support towards two sides, two adjacent support racks are driven by a first driving mechanism to stretch or fold. Each support rack comprises a main rack and a widening support at least arranged on one side of the main rack. Each widening support is slidably fixed on each main rack and driven by a second driving mechanism to retract along the length direction of a roadway. The liftable, foldable and extensile airborne advanced support device has following beneficial effects: the movable base drives the lifting support to move back and forth; the lifting support drives the advanced support to move up and down; and by means of the multiple hinged support racks, an irregular unprotected area which is just exposed can be supported in an adaptable manner.

The invention relates to a convenient and fast constant-resistance type temporary support strut which can solve the difficulties restricting the development of tunneling temporary support in the tunneling temporary of maintenance of tunneling head and roof fall region maintenance, wherein the difficulties include complicated operation, long assembly and disassembly time, low setting stress, heavysize, high price and the like. In the structure, the temporary support strut comprises an outer strut, a sleeve, a rack strut and an inner movable strut; the inner movable strut is provided with a top tray at the upper end and fixing holes in the strut body and is installed in the rack strut; the outer wall of the rack strut is provided with pin holes; pins pass through the pin holes and the fixing holes in the inner movable strut in a cross way to fix the inner movable strut and the rack strut together; the rack strut passes through the sleeve and is installed in the outer strut; a lifting mechanism for lifting the rack strut up is fixed on the sleeve; the sleeve is fixed on the outer strut; a bottom tray is arranged at the lower part of the outer strut, and a brake is installed at the lower part of the sleeve on the outer strut. The convenient and fast constant-resistance type temporary support strut is light and adjustable, also has the advantages of high support speed, large support height, high setting stress, automatic pressure release and the like, and can greatly improve the filed working efficiency and guarantee the construction safety.

The invention discloses a high-reliability conveying trolley structure for construction field. The high-reliability conveying trolley structure for construction field comprises a trolley plate, a hopper, a single wheel, a support rod and a handlebar, wherein the hopper is positioned above the trolley plate; the single wheel is fixed under the trolley plate through a wheel plate; the support rod and the handlebar are fixed at the same end of the trolley plate; the trolley structure also comprises anti-falling devices arranged at the two sides of the trolley plate; the anti-falling devices can realize the downward unfolding and the folding in the direction towards the bottom of the trolley. The high-reliability conveying trolley structure has the advantages that by using the structure, the goal of adapting to the complicated terrain can be achieved; the tipping in the cargo conveying process of the trolley is avoided; a certain protection effect is achieved on trolley pushing personnel.

The invention relates to a heading machine, in particular to a heading machine provided with a cantilever type front canopy supporting protection device, aiming at solving the problem that the existing heading machine is not provided with the supporting protection device. The heading machine comprises a front cantilever and a speed reducing device positioned on the front cantilever, wherein the outer wall of the speed reducing device is sheathed with a canopy base, the left and the right sides of which are articulated with telescopic racks, and each telescopic rack consists of a support plateand two support legs fixed under the support plate; the front end on the upper surface of the canopy base is articulated with a rotary beam, the other end of which is penetrated with a rotating shaftvertical to the rotary beam, and the two ends of the rotating shaft are fixed with support beam bases which are provided with grooves that are internally articulated with support beams; jacks of the telescopic racks are respectively articulated between the bottoms at the two sides of the canopy bases and the telescopic racks, jacks of the rotary beams are articulated between the support plates ofthe telescopic racks and the rotary beams, and jacks of the support beams are articulated between the rotary beams and the rotating shafts. The heading machine can reduce the time for supporting protection, lighten the labor intensity, and effectively improve the safety factor.

The invention discloses an anti-tilting trolley fit for slope stopping, which comprises a trolley plate, a trolley hopper, a single wheel, a trolley handle, an insertion device and anti-tilting devices, wherein the trolley hopper is located above the trolley plate; the single wheel is fixed under the trolley plate through a wheel plate; the trolley handle is fixed on the trolley plate; the insertion device is fixed on the trolley plate or the trolley handle; the anti-tilting devices are arranged on the two sides of the trolley plate and can be unfolded downward and folded toward the bottom of the trolley plate; the insertion device comprises a connecting rod, a flat pressing plate and an insertion drum arranged under the flat pressing plate; one end of the connecting rod is fixed on the trolley plate or the trolley handle while the other end of the connecting rod is fixed with the flat pressing plate. With such a structure, the anti-tilting trolley can obtain reliable stopping guarantee and can be prevented from being out of control when used for loading and unloading cargos on a slope, can be conveniently restarted on the slope, and can be prevented from tilting in the process of transporting the cargos and can prevent a trolley operator from being hurt.

The invention relates to electrically-driven double arm-braces. The electrically-driven double arm-braces comprise a pair of supporting rods matched with an arm-brace motor in a transmission manner, and a pair of footing rods hinged with the bottom ends of the supporting rods respectively, wherein an extending part extendingoutwardly is arranged on the outer side surface of the top end of each footing rod; a meshing tooth is formed at the top end of each extending part, or a pulley is arranged at the top end of eachextending part; a meshing seat is fixedly arranged at the upper part of a position adjacent to each extending part; when each supporting rod is in upward displacement, the meshing seat is meshed with the meshing tooth, or is in sliding fit with the pulley, and is suitable for allowing the supporting rods to swing towardsthe inner side until to be in the horizontal state; when each supporting rodis in downward displacement, the meshing seat and the meshing tooth are separatedfrom each other, and the footing rods are suitable for swinging downwards and present in a splay shape. When the electrically-driven double arm-braces are in use, supporting rods continue downward synchronous displacement until being in contact with the ground and supporting up the rear end part of an electric motorcar or a motorcycle so as to fix the electric motorcar or the motorcycle, and moreover, labor is not required.

The invention belongs to the technical field of underground equipment in a coal mine and particularly relates to an anchor rod transloading set which solves the problem that existing underground equipment in the coal mine cannot be suitable for mines with small section roadways and mines with coal beds in poor geological conditions. The anchor rod transloading set comprises a chassis, a transloading mechanism and a scraper conveyer. The bottom disc is provided with the transfer mechanism and comprises a main frame, a left crawler frame, a right crawler frame and a tail frame. Lifting mechanisms are respectively arranged at the top parts of the left crawler frame and the right crawler frame. The top parts of the lifting mechanisms are connected with a worktable, and the front part of the worktable is connected with a front anchor protector. A rear anchor protector is arranged at the rear part of the main frame. Temporary supports are further hinged on the left crawler frame and the right crawler frame. The invention has the beneficial effects that the anchor rod transloading set can be used for mines with small section roadways and mines with coal beds in poor geological conditions, the complete machine is arranged compactly, the structure is reasonable, the anchor protector part has high degree of automation and fast support speed, and the anchor rod transfer set has large loading capacity, strong climbing ability and can protect and transfer at the same time.