36results about How to "Realize force balance" patented technology

The invention provides an embedded safety elevator which comprises an elevator safety lifting device and an elevator car. The elevator safety lifting device comprises a transmission rod, spiral lifting assemblies and track nut pipes. A spiral slide corresponding to a spiral slide on the inner wall of the corresponding track nut pipe and capable of being meshed with the spiral slide is arranged on the surface of a sliding bolt of each spiral lifting assembly, and each spiral lifting assembly is embedded in the corresponding track nut pipe. A first bevel gear is arranged on the end portion of the transmission rod, the bevel gear at the opening position of the track nut pipe is meshed with a second bevel gear on the end portion of the sliding bolt arranged in the corresponding spiral lifting assembly, and two spiral lifting assemblies and two track nut pipes matched with the assemblies are provided and symmetrically arranged on two sides of the elevator car. The embedded safety elevator meets the requirement for multi-direction opening, and the manufacture cost and the use cost of the elevator are effectively reduced.

The invention provides an improved holding device of an evaporated material of an evaporator, which comprises a first transmission mechanism, a supporting frame, a pair of second transmission mechanisms and a third transmission mechanism, wherein the first transmission mechanism comprises a first rotating shaft and a first rotating wheel which are driven to rotate by a driving device; the supporting frame is provided with a fixed disk and a supporting arm connected with the fixed disk; the second transmission mechanisms are respectively formed at the opposite sides of the first rotating wheel, and the second transmission mechanisms comprise a second rotating wheel, a second rotating shaft and a third rotating wheel, wherein the second rotating wheel rotates around the first rotating wheel, the second rotating shaft penetrates through the second rotating wheel and the fixed disk, and the third rotating wheel is connected with the second rotating shaft; and the third transmission mechanism comprises a fourth rotating wheel and an evaporated material bearing shaft, wherein the fourth rotating wheel is driven by the third rotating wheel, the evaporated material bearing shaft penetrates through the fourth rotating wheel and the supporting arm, and the shaft axis of the evaporated material bearing shaft is vertical to the extension line of the shaft axis of the first rotating shaft. Thus, the holding device for the evaporated material can be in revolution and rotation.

The invention discloses a bidirectional driving device for a seat height adjustor. The bidirectional driving device comprises a retarding piece, a driving plate, a ratchet wheel and a separating piece used for being fixed to a height adjustor body. Transition belts used for shielding part of the ratchet wheel are arranged on the separating piece, symmetrical portions of the retarding piece are sleeved with a set of pawls in a rotating mode, and the pawls are connected with the driving plate in a relative rotating mode. In a non-working state, the pawls are separated from the ratchet wheel; in a working state, the driving plate can drive the pawls to conduct revolution, and the retarding piece retarding rotation through the separating piece drives the pawls to conduct autorotation and be meshed with an inner-ring ratchet of the ratchet wheel. According to the device, under the retarding effect of the retarding piece and the separating piece, matching between the pawls and the ratchet wheel is achieved, and the effect that the driving plate enables the ratchet wheel to conduct unidirectional rotation is achieved, so that the operating movement range is saved; the symmetrical pawls are arranged on the driving plate and the retarding piece, and therefore stress balance of the ratchet wheel in the rotation process can be achieved. The invention further discloses a seat comprising the bidirectional driving device and a vehicle.

A planar three-range-of-motion loading robot with a multi-unit connection rod driving function comprises a multi-unit connection rod driving mechanism, a movable arm lifting mechanism, a fork bucket control mechanism and the like. Under control of a computer, the multi-unit connection rod driving mechanism achieves driving of multiple small-power motors and high-power and high-torque power output, and meets the power requirement of high-load operation of the slippage type loading robot. On the basis of the Pascal principle, a hydraulic element is introduced to the movable arm lifting mechanism, equal in-cylinder pressure is achieved, the problem that stress on two driving chains for driving a movable arm of an original controllable loading mechanism is unbalanced is effectively solved, and the bearing stability is improved. The loading robot has the characteristics of being high in transmission efficiency, high in response speed, high in motion precision, good in controllability and the like as the original controllable loading mechanism, but also has better bearing performance and vibration resistance through introduction of the multi-unit connection rod driving mechanism and the hydraulic element, can achieve the overload protection function easily, and is quite suitable for manufacturing of large, intermediate and small-sized loading robots.

A balance mechanism of a drilling and milling head of a gantry movable type numerical-control drilling and milling machine comprises self-locking spring balancers. Two ends of a steel wire rope in a body of each self-locking spring balancer respectively penetrate out of two sides of a shell of the self-locking spring balancer, the steel wire rope on one side of the shell of each self-locking spring balancer is connected with a connector of a first swing bolt by a first hook, the first swing bolts are fixed onto upright column assemblies by first nuts, the steel wire rope on the other side of the shell of each self-locking spring balancer is wound around a roller and then is connected with a connector of a second swing bolt by a second hook, and the second swing bolts are fixed onto a drilling and milling head assembly by second nuts and can move along with the drilling and milling head; and the rollers are sleeved on axles, the axles are fixed onto supports, the supports are fixed onto the upright column assemblies, and sliding sleeves are arranged among the rollers and the axles. The balance mechanism has the advantages that stress on the drilling and milling head can be balanced, driving force of a spindle of the drilling and milling head can be effectively relieved, and the running stability of the drilling and milling power head is guaranteed.

The invention discloses a construction method for a test pile with ultra-buried depth in a rock stratum, and belongs to the field of test pile construction. The technical problems that holes in a complex rock stratum are difficult to form, the underwater concrete ultra-pouring elevation cannot be accurately controlled, the static load detection operation conditions of the bottom of an ultra-deep foundation pit are limited, and the bearing detection is influenced by the control friction resistance for a cast-in-place pile are solved. According to the technical scheme, the method comprises the following steps that S1, construction preparation is carried out; S2, advanced drilling exploration is carried out, and a rock surface BIM model is established; S3, a protective cylinder is positionedand buried, and manufacturing and placing of double sleeves of the test pile are carried out; S4, a drilling machine is in place, and the centering and perpendicularity adjustment of a drill rod are carried out; S5, soil layer drilling, wall protection and rock stratum multi-stage step type drilling are carried out; S6, the perpendicularity of the drill rod is monitored by utilizing an internal and external double-control method; S7, a steel reinforcement cage is manufactured and an anti-floating structure is installed according to the step 2, the steel reinforcement cage is hoisted and placed, and an ultra-pouring monitoring probe is installed; S8, a guide pipe is placed, and secondary hole cleaning is carried out by adopting a gas lift reverse circulation method; and S9, underwater concrete pouring and ultra-pouring height monitoring are carried out.

A multi-unit-linear-driven loading robot with three planar ranges of motion comprises a multi-unit-linear-driving mechanism, a movable arm lifting mechanism, a bucket control mechanism and the like. Multiple linear drivers are adopted by the multi-unit-linear-driving mechanism for driving, high-power and high-torque power output is achieved through cranks, and the power requirement of an executing mechanism is met. Hydraulic elements are introduced in the movable arm lifting mechanism, equal pressure in two cylinders is achieved, the problem of unbalanced stress on two driving chains for lifting movable arms in original controllable loading mechanisms is effectively solved, and the bearing stability of the movable arms is improved. the loading robot not only has the characteristics of high mechanical efficiency, high response speed, high moving precision, good controllability and the like of the original controllable loading mechanisms, but also has better bearing and shock-resisting performance due to introduction of the multi-unit-linear-driving mechanism and the hydraulic elements, an overload protection function can be easily achieved, and the technical scheme is quite suitable for manufacturing of large, medium and small loading robots.

A multi-unit linkage-driven planar 3-acitivity face-shovel loading robot comprises a multi-unit linkage-drive mechanism, a movable arm lifting mechanism, a bucket control mechanism, and the like. Under the control of a computer, the multi-unit linkage-drive mechanism is driven by a plurality of low-power motors, the high-power and high-torque power output is achieved, and then the high-loading operation power demand of the loading robot is met; based on the Pascal's law, the same in-cylinder pressure is achieved by introduction of hydraulic elements into the movable arm lifting mechanism, thereby effectively solving the problem that two drive chains of lifting movable arms of a conventional controllable loading mechanism are subjected to uneven pressure and improving the bearing stability; the loading robot has not only the high-transmission-efficiency, high-response-speed, high-motion-accuracy, high-controllability and other characteristics of the conventional controllable loading mechanism, but also better bearing and anti-vibration properties by introduction of the multi-unit linkage-drive mechanism and the hydraulic elements; meanwhile, the overload protection function is easy to achieve; and such technical scheme is very suitable for manufacturing of large-, medium- and small-sized loading robots.

A simple high-load wood forklift with a multi-unit connection rod driving function comprises a multi-unit connection rod driving mechanism, a movable arm lifting mechanism, a fork bucket control mechanism and the like. Under the control of a computer, the multi-unit connection rod driving mechanism achieves driving of multiple low-power motors and high-power and high-torque power output, and meets the power requirement for high-load operation of the wood forklift. A hydraulic cylinder is applied to the configuration design of the wood forklift as a connection rod on the basis of the Pascal principle, through introduction of a hydraulic element, the problem that in the prior art, stress on two driving chains for lifting a movable arm is unbalanced is effectively solved, and the bearing stability is improved. The wood forklift not only has the characteristics of being high in transmission efficiency, high in response speed, high in motion precision, good in controllability, capable of saving energy, environmentally friendly and the like as a controllable mechanism, but also has better bearing performance and shock resistance through introduction of the multi-unit connection rod driving mechanism and the hydraulic element, can achieve the overload protection function easily and has great engineering application prospects and development potential.

The invention relates to the technical field of magic cubes, in particular to a pyramid magic cube which comprises a center shaft in a four-foot cone shape, a plurality of center block bodies, a plurality of edge block bodies and a plurality of tetrahedral angle block bodies. The edge block bodies are clamped between two adjacent center block bodies and the center shaft to form a pyramid magic cube in a tetrahedron shape; a clamping piece is arranged in the corner block body, the central shaft extends into the corner block body and is connected with the clamping piece, and a floating mechanism is arranged between the clamping piece and the corner block body, so that the corner block body floats when the pyramid magic cube is rotated; a magnetic module is arranged between the central block body and the edge block body, so that the central block body and the edge block body can be positioned conveniently; a linkage mechanism used for adjusting the multiple magnetic modules at the same time is arranged in the pyramid Rubik's cube so that the multiple magnetic modules can be adjusted at the same time, and the adjusting amplitudes of the multiple magnetic modules are the same.

The invention provides a plane three-activity electro-hydraulic controllable face shovel loading robot. The plane three-activity electro-hydraulic controllable face shovel loading robot comprises a movable arm lifting mechanism, a bucket control mechanism and the like. A hydraulic element is introduced into the movable arm lifting mechanism, so that the in-cylinder pressure is equal, the problem that two lifting branched chains of a movable arm of the loading robot are unbalanced in stress is solved, and the bearing stability is improved. According to the plane three-activity electro-hydraulic controllable face shovel loading robot, the characteristics of being high in transmission efficiency, response speed and moving precision, good in controllability and the like of an existing controllable loading mechanism are achieved; and in addition, the bearing capability and the anti-vibration performance of the loading robot are greatly improved by introducing the hydraulic element, an overload protection function is easy to achieve, the reliability and the practicability of the loading robot are greatly improved so that operation in places where the construction environments are bad can be achieved through the loading robot, and the hydraulic element is suitable for manufacturing large-size, medium-size and small-size loading robots.