67results about How to "Secure working space" patented technology

An engine oxygen concentration sensor mounting structure in which an oxygen concentration sensor is mounted in an exhaust pipe connected to an outlet of an exhaust manifold having a plurality of exhaust single pipes. When a straight line is drawn from a detection part of the oxygen concentration sensor positioned within the exhaust pipe so as to be parallel to a section of a centerline of the exhaust pipe closest to the detection part, the straight line passes outside the outlet of the exhaust manifold. This allows the exhaust gases discharged from the exhaust manifold to be sufficiently mixed within the curved exhaust pipe and differences in length of the plurality of the exhaust single pipes to be compensated for. Thus, accurate detection by the oxygen concentration sensor can be secured, even if the lengths of a plurality of exhaust single pipes of the exhaust manifold are nonuniform.

The invention discloses a self-learning-based rotation control method for a dangerous condition of a tower crane. The self-learning-based rotation control method particularly comprises the following steps of: 1, carrying out self-learning on the inertia and a rotation running characteristic of the tower crane on the tower crane; 2, carrying out deceleration or shutoff control as appropriate according to the current running state of the tower crane; 3, after low-speed cut-off control of the tower crane, executing closed-loop control, if the dangerous angle of the tower crane at the time is more than an ideal parking position, re-starting low speed in a control direction of the tower crane by a system, allowing the tower crane to continuously advance at a low speed to be close to a target position; and 4, immediately braking when the tower crane enters a red line due to out of control, directly stopping the tower crane, delaying a brake for a certain time, then opening the brake and allowing the tower crane to rotate towards a safety direction. According to the self-learning-based rotation control method, the rotation of the tower crane is passively controlled, the parking regulation and braking control are carried out to ensure the parking stability, and the impaction of the rotation inertia of the tower crane is avoided.

The invention provides a suspension rail type rock drilling machine which can be used for solving the defects of poor flexibility of a drilling arm, movement restriction due to a tunnel bottom plate condition, low degree of automation, low working efficiency and the like in the prior art. The suspension rail type rock drilling machine comprises a machine body, a rock drilling device, a travelling mechanism and a hydraulic pump station and is technically characterized in that a rectangular-axis slewing mechanism and a rock drilling device control arm which is provided with a vertical-regulation hydraulic cylinder, a lifting hydraulic cylinder and a transverse-regulation hydraulic cylinder are adopted for connecting the rock drilling device; a driven travelling wheel and a driving wheel on the upper part of the machine body are adopted for moving along a travelling rail at the top of a tunnel; the hydraulic pump station which is suspended on the travelling rail by use of the driven travelling wheel is connected to the rear part of the machine body. The suspension rail type rock drilling machine is reasonable in design, compact in structure, small in tunnel occupied space, simple and convenient to operate, and stable, safe and reliable in movement, can perform permanent support operations such as anchor rod drilling and anchor rope drilling according to different geological conditions and the cross-section shape of the tunnel and can perform blasting hole drilling operation on a blasting working face, so that the production efficiency and support quality of a driving working face are remarkably improved.

An engine oxygen concentration sensor mounting structure in which an oxygen concentration sensor is mounted in a collector exhaust pipe connected to an outlet of an exhaust manifold having a plurality of exhaust single pipes. When a straight line is drawn from a detection part of the oxygen concentration sensor positioned within the collector exhaust pipe so as to be parallel to a section of a centerline of the exhaust pipe closest to the detection part, the straight line passes outside the outlet of the exhaust manifold. This allows the exhaust gases discharged from the exhaust manifold to be sufficiently mixed within the curved exhaust pipe and differences in length of the plurality of the exhaust single pipes to be compensated for. Thus, accurate detection by the oxygen concentration sensor can be secured, even if the lengths of a plurality of exhaust single pipes of the exhaust manifold are nonuniform.

The present invention provides a control device and a control method of a sewing machine. The control device of the sewing machine easily sets the height data of the sewed object into the sewing pattern data. The control device of the invention comprises the following components: a motor of sewing machine, which causes a sewing needle to move vertically; an intermediate presser foot which prevents the floating of the sewed object in sewing; an intermediate presser foot vertical-moving mechanism which vertically moves the intermediate presser foot synchronously with the sewing needle; a heightadjusting mechanism which adjusts the height of a lower dead point of the intermediate presser foot through the intermediate presser foot motor; an intermediate presser foot control unit which controls the intermediate presser foot motor for stopping the intermediate presser foot through the pressing when the intermediate presser foot descends and contacts; a thickness obtaining unit which computes the thickness of the sewed object according to the height of the intermediate presser foot in the state variation of an output shaft of the intermediate presser foot motor, which is caused by the descending and contacting of the intermediate presser foot; and a thickness recording unit which records the thickness of the sewed object into the sewing pattern data corresponding with the sequence of the needle number.

A vacuum processing apparatus with excellent processing uniformity and capable of effectively performing routine and non-routine maintenance even when an object to be processed has an increased diameter is provided. In the vacuum processing apparatus having a vacuum transfer chamber, this apparatus comprises a lower vessel having a cylindrical shape, a sample stage unit including a sample stage and a ring-shaped sample stage base having support beams disposed axisymmetric with respect to a central axis of the sample stage, an upper vessel having a cylindrical shape, and a moving mechanism which is fixed to the sample stage base and is capable to move the sample stage unit movable in a vertical direction and in a horizontal direction.

The invention provides a false twist texturing machine, capable of ensuring the space for storing full packages and winding a plurality of high-quality packages in short time. The false twist texturing machine (1) comprises a main frame (2) and a winding frame (3). The winding frame is provided above a working chamber (6) opposite to the main frame. The false twist texturing machine comprises a yarn supply section (5) and a winding device (15) for winding yarn (Y) from the yarn supply section (5). A first feed roller (20), a first heating device (11), a cooling device (12), a false twist device (13), a second feed roller (21), a second heating device (14) and a third feed roller (22) are arranged in turn from one side of the upstream along the yarn walking direction on the yarn from the yarn supply section to the winding device. The false twist device and the second heating device are arranged on the main frame and the first feed roller (20) and the winding device are arranged on the winding seat. Four-layer winding devices are arranged on the winding frame.

The spring balancer can ensure the operation space and improve operation environment, and is suitable for hanging pneumatic tool with installation torque testing function. The spring balancer includes one hose member with two pieces of hose; one reel for the hoses to be wound on; one bearing member comprising bearing shaft with two inside air passages and cylindrical rotary connector supported by the bearing shaft for rotating with the reel; and torque applying member for applying torque to the reel. The rotary connector has opening and the opening may be connected to these hoses and these air passages.

The invention relates to a circulating spray absorption tower for flue gas purification treatment. The absorption tower comprises a cylindrical liquid storage tower body and a cylindrical spray towerbody connected with the top end of the liquid storage tower body; a cleaning and scraping mechanism is arranged on the liquid storage tower body; two spraying pipeline assemblies capable of horizontally rotating are vertically arranged in the spray tower body; and a rotation driving mechanism used for driving the two spraying pipeline assemblies to rotate is arranged on the outer side wall of thespray tower body. According to the absorption tower provided by the invention, a spraying medium liquid can be uniformly and widely distributed in the spraying space, so that flue gas flowing upwardscan be in contact exchange with the spraying medium liquid at equal probability, and the spraying absorption effect can be improved and guaranteed; in addition, solid precipitates can be continuouslyscraped off, and formation and accumulation of a precipitation layer are avoided.

The present invention discloses an air conditioner capable of switching easily the front panel used for opening the front of the body, and opening the panel completely. The air conditioner of the present invention comprises a body forming the appearance, a front panel used for opening the front of the body, wherein the front panel slides towards the right and left direction to open / close by means of a first roller arranged on the upper part of the front panel and a second roller arranged on the bottom part of the front panel. And, each of the first roller and the second roller comprises a guide track arranged on one of the body and the front panel, and a plurality of roller arranged on the other.

The present invention comprises a branching pipe joint, for distributing a refrigerant that flows within a main pipe to two flows, and an air conditioner provided therewith, and achieves both the compaction of the vicinity of the branch part and the prevention of drift therein. A branching pipe joint (181) comprises a substantially Y-pipe shaped branch part (182), a first branch nozzle part (183), a second branch nozzle part (184), and a first branch pipe (186). The first branch pipe (186) is a pipe member, wherein one end part is connected to a tip part of the first branch nozzle part (183) during plumbing work. The first branch nozzle part (183) and the second branch nozzle part (184) are disposed so that a spacing between a portion of the tip part of the first branch nozzle part (183) nearest the second branch nozzle part (184) side and a portion of the second branch nozzle part nearest the tip part of the first branch nozzle part is less than or equal to 40 mm.

A radiation image reading apparatus having a front plate holding means, a back plate holding means, and a conveyance means for conveying at least either of the holding means between a cassette joint position and a position for reading radiation image information that substantially parallelly separates a front plate and a back plate. The conveyance means has a first link whose upper end is pivotably attached to a holding means conveyed and whose lower end is vertically movably attached to an apparatus body; a second link whose upper end is pivotably attached to the apparatus body and whose lower end is vertically movably attached to a holding means conveyed; a connection shaft for pivotably connecting the first linkand the second link at the portion where they cross; and an actuator for vertically driving the lower end of either of the links.

The present invention provides an air conditioner capable of switching the front panel easily and opening the bottom part in the front of the body to ensure working space adequately. The air conditioner of the present invention comprises a body forming the appearance, a front panel used for opening the front of the body, a hinge used for hinge joint the front panel with the body for switching the front of the body. And the hinge forms an isolation space for isolating the rotating shaft center of the front panel from the front panel so as to prevent the front panel from interfering with the body when front panel is rotated. The hinge comprises a rotating shaft rotatablely supported on the body, a joining part joined to the front panel, a hinge body connecting the rotating shaft with the joining part. The hinge body comprises a rear extension part extending towards the rear of the rotating shaft, an inner extension part bending towards the inner side of the body from one end of the rear extension part and extending, and a front extension part bending towards the front from one end of the inner extension part and extending.

The invention provides an elevator comprising a car (1), an upper beam (2) integrally spanned with the car (1) and an air conditioning plant (10) arranged above the car (1) in a way that the height oftop thereof is below the upper surface of the upper beam (2). A safe gird (6) for operation is arranged on the upper beam (2). A mounting rod (3) with the height of top thereof disposed below the upper surface of the upper beam (2) is fixed on the upper beam (2).

The invention discloses an automatic calorimeter for caloric analysis of a sample, comprising an outer barrel, an inner barrel and an oxygen bomb; the oxygen bomb is disposed in the inner barrel which is arranged in the outer barrel, a water supply stirring mechanism is arranged outside the outer barrel for supplying water to the inner barrel and stirring, the water supply stirring mechanism comprises a water supply chamber and a magnetic stirring assembly, one end of the water supply chamber is provided with a water inlet for communication with an external water supply apparatus, and the other end of the water supply chamber is provided with a water outlet for communicating with the inner barrel to supply water; the magnetic stirring assembly comprises stirring blades arranged in the inner barrel, a magnetic transmission part arranged in the water supply chamber and a magnetic drive part arranged outside the water supply chamber, the magnetic drive part cooperates with the magnetic transmission part to drive the magnetic transmission part to rotate, and the magnetic transmission part cooperates with the stirring blades to drive the stirring blades to move in sync for stirring. The calorimeter of the invention has the advantages of simple and compact structure, good stirring effect, high volume fixing precision and high test and analysis precision.

A machine tool with a linear guide device of a novel construction that enables simple linear guide replacement work. A machine tool is provided with linear guide devices (1, 1) having a base (11), guide rails (12, 12) placed on the base (11), linear guides (2, 2) movably placed on the guide rails (12, 12), and a jack up mechanism composed of a saddle (9)(movable body) movably supported by the guide rails (12, 12) with the linear guides in between and of a jack up bolt (5) provided between the base (11) and the saddle. The linear guides are fixed to the saddle through a fixation member. The fixation member is operated to release the fixation of the linear guides to the saddle, a gap (8) is formed between the saddle and the linear guides by using the jack up mechanism placed between the base and the movable body, and thereby the linear guides can be replaced.

A ring-shaped cofferdam and temporary pit excavation structure using tapered square pipes includes a plurality of tapered square pipes a trapezoidal cross-section, in which the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in a longitudinal direction on a first side, the plurality of tapered square pipes each have a coupling protrusion or a coupling groove formed in the longitudinal direction on a second side, the plurality of tapered square pipes are assembled by coupling the coupling protrusions and the coupling grooves, a long side of two parallel sides of the trapezoid is disposed outside, and a short side is disposed inside.

The present invention provides an indirect lighting lamp cover device which has an indirect lighting cover (10) having an L-shaped sectional plane and being installed on a ceiling part in an elevator cage (24) for covering a lighting lamp (18), a fixing bracket (12) fixed on the bottom surface of the indirect lighting cover (10), and a milk white plastic plate (15) having an L-shaped sectional plane and being fixed the fixing bracket (12) in a free disassembly and assembly way, therefore, the lighting lamp (18) is covered by the indirect lighting cover (10) through the L-shaped milk white plastic plate (15).

An installation structure of an external filter case for a refrigerator is provided. The filter case may include a main body that provides an inner space in which an internal line may be installed and water filters may be installed, and a cover that covers the inner space of the main body and is detachably coupled with the main body. The main body may have an open front side and may include bosses that protrude from its bottom face. The cover may include insertion holes into which the bosses may be inserted. A lower portion of the main body may be coupled with a lower portion of the cover. Magnets may be installed in upper portions of the main body and the cover, respectively, such that the main body and the cover may be coupled with each other by a magnetic force.

The invention relates to the technical field of underwater robots, and particularly relates to an underwater unmanned cable-free operation type robot which comprises a bow part, a middle part and a stern part. The bow part, the middle part and the stern part are each a hollow structure, and a mechanical arm lifting device and a cabin door opening and closing mechanism are arranged in the middle part; and a first horizontal channel propeller and a first vertical channel propeller are arranged on the bow portion, two second vertical channel propellers and four main propellers are arranged on the stern portion, and therefore high-speed cruising of the underwater unmanned cable-free operation type robot can be achieved, and stable and accurate hovering needed by operation of the underwater unmanned cable-free operation type robot can be met.

The invention provides a sewing machine comprising a sewing mechanism (1). The sewing mechanism (1) comprises a needle (11) with a needle hole through which yarns (13) can pass through; a sewing machine presser foot (12) for pressing a sewing sheet (F) and a substrate sheet (B) which are to be sewed by the needle; the sewing sheet (F) and the substrate sheet (B), on one hand are moved in a set direction, on the other hand pass through the sewing mechanism (1) to be sewed; the sewing mechanism also comprises a substrate sheet guiding mechanism which is provided with a bending guiding part (2) and a guiding sheet (3), wherein the bending guiding part (2) guides the substrate sheet (B) by bending the substrate sheet (B), and the guiding sheet (3) extends by protruding more than the end part, at the sewing mechanism side, of the bending guiding part (2) does and guides the substrate sheet (2) which is kept in a bending state between the sewing machine presser foot (12) and the sewing sheet (F). Therefore, the substrate is bent and the bending state of the substrate can be steadily kept until sewing is started.

Disclosed is a film-forming apparatus (10) which includes: a film-forming chamber (11), which has an upper part (22) in the gravitational direction, and has a substrate (W) disposed therein such that the substrate (W) surface, on which a film is to be formed, is parallel to the gravitational direction; an electrode unit (31), which has a flat-board-like cathode (75) having a voltage applied thereto, and an anode (67) disposed to face the cathode (75) by being spaced apart from the cathode, and which is removably provided in the film-forming chamber (11); and an attaching / detaching rail (41), which is provided on the upper part of the film-forming chamber (11), in the direction wherein the electrode unit (31) is drawn from the film-forming chamber (11), and which guides the electrode unit (31).

The invention provides a sewing machine comprising a sewing mechanism (1). The sewing mechanism (1) comprises a needle (11) with a needle hole through which yarns (13) can pass through; a sewing machine presser foot (12) for pressing a sewing sheet (F) and a substrate sheet (B) which are to be sewed by the needle; the sewing sheet (F) and the substrate sheet (B), on one hand are moved in a set direction, on the other hand pass through the sewing mechanism (1) to be sewed; the sewing mechanism also comprises a substrate sheet guiding mechanism which is provided with a bending guiding part (2) and a guiding sheet (3), wherein the bending guiding part (2) guides the substrate sheet (B) by bending the substrate sheet (B), and the guiding sheet (3) extends by protruding more than the end part, at the sewing mechanism side, of the bending guiding part (2) does and guides the substrate sheet (2) which is kept in a bending state between the sewing machine presser foot (12) and the sewing sheet (F). Therefore, the substrate is bent and the bending state of the substrate can be steadily kept until sewing is started.