134results about How to "Driving force is stable" patented technology

The invention discloses a dual-head 3D printer capable of rotatably switching printing heads. The dual-head 3D printer is characterized by comprising a fixing plate, an installation plate which is arranged on the fixing plate, a first printing head and a second printing head, wherein the first printing head and the second printing head are installed on the installation plate in parallel; the fixing plate is provided with a fixed rotating shaft, and the installation plate is connected to the fixed rotating shaft in a way of rotating around the axis of the fixed rotating shaft; the first printing head is arranged below the fixed rotating shaft to the left side, and the second printing head is arranged below the fixed rotating shaft to the right side; and the dual-head 3D printer also comprises a drive mechanism for driving the installation plate to rotate along the fixed rotating shaft. The installation plate is driven by the drive mechanism to rotate, so that the structure that the heights of the two printing heads can be adjusted up and down relatively in the vertical direction, the working printing head is always maintained at a relatively low position, and the non-working printing head is maintained at a relatively high position; thus, the non-working printing head does not influence the surface of a molded workpiece, and the printing quality is improved.

A suspension device for a work vehicle is capable of not only providing improved ride quality during nonoperational traveling such as on-site movement over uneven terrain, but also ensuring stable driving power during operational traveling such as an excavation operation on uneven terrain. The suspension device 60 has an equalizer bar 61 for coupling undercarriages 4, 4′ provided on both sides, respectively, of a vehicle body 3, the equalizer bar 61 being provided in the vehicle body 3 so as to be freely swingable up and down. This suspension device 60 has pitch angle change cylinders 65 as maximum pitch angle changing mechanism for changing the maximum pitch angle of the equalizer bar 61.

The invention discloses a metal material plastic forming method through electromagnetic force driving. The metal material plastic forming method through electromagnetic force driving comprises the following steps that after insulating coatings are sprayed on the upper surface and the lower surface of a metal blank, the metal blank is arranged on a lower mould and is pressed through an edge pressing mould, and a certain interval is kept between an upper mould and the upper surface of the metal blank; current is applied to the metal blank, current opposite to the current of the metal blank in direction is applied to the upper mould, or/and current in the same direction as the current of the metal blank is applied to the lower mould, and downward electromagnetic force generated by mutual action of the current drives the metal blank to deform; the metal blank is attached to the upper surface of a groove of the lower mould after free expansion, mould attaching and other deformation stages under the driving of electromagnetic force, and the metal blank plastically deforms until formation. The invention further discloses a corresponding forming device. By means of the metal material plastic forming method through electromagnetic force driving, stable and continuous electromagnetic force is generated through the current, obviously improves deformation efficiency, increases the plasticity of materials, saves energy, and is suitable for the plastic formation of various metal plates.

The invention discloses a wall-climbing robot which comprises a power system, an adsorption system and a control system. The power system comprises a wheel, a driving motor, a rotating disc, a linear motor, a pushing rod and a connecting rod. The adsorption system comprises a high-speed motor, a fan, labyrinth cavities and a vacuum air supplement valve device. Due to the multi-cavity structure, reliability and adaptability of the wall-climbing robot in the working process are improved. Meanwhile, due to the vacuum air supplement valve device, the walking driving force of the wall-climbing robot is more stable, and adaptability of the wall-climbing robot to different wall faces is improved. The wall-climbing robot can be used for conducting crack inspection on a nuclear waste liquid tank and a reactor pressure tank, conducting thickness measurement and weld joint flaw detection, conducting coating on large wall faces, cleaning the glass wall faces, installing ceramic tiles, conducting bridge flaw detection and conducting inspection, measurement and maintenance on the inner wall face and the outer wall face of a large circular tank or a spherical tank, and can also be used for conducting rust removal, spray coating and the like on a ship.

A motor may include a bearing made of resin for rotatably supporting one end part of the rotor shaft, and an urging member attached to a bearing holder and abutted with a pressurization face of the bearing to urge the bearing toward a side of the rotor shaft. A molding material injection gate trace (projection) which has been used when the bearing is resin-molded is positioned at a center portion of the pressurization face. The molding material injection gate trace may be positioned in a recessed part which is formed at a roughly center portion of the pressurization face of the bearing. Further, the urging member may include an urging piece which is formed by cutting a center portion of a metal plate in a ring shape and an opening part is formed in the urging piece.

A camera module includes upper and lower leaf springs having a stable load characteristic and a holder displaceably held by the leaf springs so that the holder can be stably displaced within a magnetic circuit. The upper spring 5 has an outer annular portion 5a, an inner annular portion 5b provided inside the outer annular portion 5a so as to be displaceable with respect to the outer annular portion 5a and attached to the holder 9, and a plurality of bridge portions 5c coupled between the outer annular portion 5a and the inner annular portion 5b. The camera module further includes a bridge portion supporting member 4 for supporting a part of at least one of the plurality of bridge portions so that a load characteristic of the leaf spring can be changed. By rotating the bridge portion supporting member 4 in a clockwise direction, an overlapping part between the extending part 4c and the bridge portion 5c is increased according to the amount of the rotation so that a spring constant of the upper leaf spring 5 is apparently increased.

The invention relates to a bearing and damping device for a crawler-type mobile platform, which is a mechanical type suspension system which is suitable for a small and medium size crawler-type locomotive platform and has the advantages of strong bearing capacity, good damping effect and high cost performance. The bearing and damping device comprises four X swing arm components, a V swing arm component, springs and other parts. A bearing function of the bearing and damping device is realized through spring systems arranged on the X swing arms and the V swing arm, the elastic force of the springs horizontally placed on the swing arms is amplified in multiples through a force boosting lever principle so as to improve the main body bearing capacity and the part damping capacity; multiple damping can be realized through the deformation of the springs and the swinging of the X swing arms and the V swing arm; small-amplitude high-frequency turbulence vibration in the vertical direction is converted to the horizontal direction by utilizing the X swing arms and absorbed by the horizontally and oppositely arranged springs; large-amplitude low-frequency vibration is buffered and absorbed by utilizing the structural characteristic of the V swing arm, so that a quite obvious damping effect is applied on the platform; and mechanical limit is taken into account in the part design, so that the stability and the reliability of the bearing and damping device can be guaranteed.

The invention relates to a bionic multi-degree of freedom precise piezoelectric driving device and belongs to the precise machining field. The multi-degree of freedom precise piezoelectric driving device is formed by a rotor and a stator; the stator comprises a first layer, a second layer and a third layer which form into an integral structure through flexible hinges; a thin wall flexible hinge, a rotation driving mechanism and a straight line driving mechanism are packed inside the stator. According to the multi-degree of freedom precise piezoelectric driving device, stepping forward and reverse 360-degree continuous rotational motion and straight line motion of the rotor are achieved based on a loopworm movement principle through the forward reasoning function of piezoelectric stack, the reverse elastic function of the flexible hinges and the clamping function of the flexible hinges. The multi-degree of freedom precise piezoelectric driving device has the advantages of being compact in structure, compact, high in displacement control accuracy, rapid in response, low in driving power, wide in working frequency and high in benefit, applied to fields such as ultraprecise machine tools, micro electro mechanical systems, precision optics, aerospace and robots and wide in development prospect and application values.

The invention discloses an auxiliary disassembly-assembly device for a deep-sea airtight cabin. The auxiliary disassembly-assembly device for the deep-sea airtight cabin comprises a supporting seat, an L-shaped stop block, three V-shaped plates, a fixing clamp, two pairs of linear guide rails, a supporting bottom plate, a location disk, a movement platform, a ball screw pair, four supports, a front bearing pedestal, a supporting plate and a back bearing pedestal. By using the device provided by the invention, a deep-sea airtight cabin body and an end cover can be placed on the different V-shaped plates for location respectively, are fixedly arranged by utilizing the L-shaped stop block and the fixing clamp; the location disk is fixedly connected with the end cover of the deep-sea airtight cabin body; the movement platform is driven by rotating a ball screw to drive the location disk and the end cover to move towards or away from the deep-sea airtight cabin body; the disassembly and the assembly of the end cover of the deep-sea airtight cabin are completed in an auxiliary manner. The auxiliary disassembly-assembly device for the deep-sea airtight cabin is simple in structure; the disassembly and the assembly of the end cover of the deep-sea airtight cabin can be conveniently and quickly completed in the condition that the mounting precision is guaranteed; the labor power is saved.

The invention discloses multistage drying equipment for traditional Chinese medicine processing and relates to the technical field of medicine processing. The multistage drying equipment comprises a main body shell. The top of the inner wall of the main body shell is fixedly connected with a fixed support; the bottom of the right side of the fixed support is fixedly connected with an electric heating pipe, and the position, located on the right side of the fixed support, of the top of the inner wall of the main body shell is fixedly connected with an electrified support; the bottom of the electrified support is fixedly connected with the surface of the right end of the electric heating pipe; and the left side of the bottom of the fixed support is rotatably connected with a clamp through arotating shaft, the top of the clamp is fixedly connected with a buckle, and the inner wall of the clamp is movably connected with a first rotating rod. According to the multistage drying equipment for traditional Chinese medicine processing, a motor achieves autonomous turning-over of traditional Chinese medicines through the gravity, the uniform thermal drying purpose is achieved through cooperation of the electric heating pipe, no redundant mixing structure is arranged inside a drying bin, the stable physical structure of the traditional Chinese medicines is protected while drying is conducted, and thus the medicinal property of the traditional Chinese medicines is not damaged.

The invention relates to a vacuum presser which comprises a distributor, a pressing system, an unloading device, a vacuum system, a driving system, two pieces of filter cloth and a frame, wherein the pressing system is arranged on the top and the middle lower part on the right side of the frame; the distributor is arranged at one end of the top of the pressing system; the unloading device is arranged on one side, which is opposite to the distributor, of the pressing system; the vacuum system is arranged on the left lower part of the frame; the driving system is arranged on the frame below the unloading device; the two pieces of filter cloth are respectively wound into two closed loops; the two pieces of filter cloth are meshed in the right middle part of the pressing system. The traditional pressing dehydration and vacuum negative pressure dehydration are perfectly combined together, and materials can be well treated, so that the equipment is wide in application range, and the dehydration efficiency in unit time is greatly improved.

The present invention is directed to a bi-axial pivoting type actuator having a first movable section, a second movable section supporting the first movable section, and backlining. A first conductive portion and a second conductive portion for independently applying a driving voltage to each of the first movable section and the second movable section are provided on the second movable section, in a state of being split by isolation trenches and being stabilized by the backlining provided under the second movable section. By providing such backlining, mutual stabilization of the first conductive portion and the second conductive portion in an electrically isolated state, and simplification of the production steps for the actuator are realized. By providing a mirror on the first conductive portion of the actuator of the present invention as such, it becomes possible to provide a bi-axial pivoting type mirror device through a simple production process.

The invention discloses a riding wheel transmission mechanism which comprises a frame (1), wherein two rows of riding wheels are arranged at the upper part of the frame (1) in parallel; one row is drive riding wheels (2), and the other row is follow-up riding wheels (3); the drive riding wheels (2) are sleeved on a principal shaft (7); chain wheels (6) are correspondingly sleeved at the front and the back end of the principal shaft (7); a double-row gear (17) of a motor (5) is directly meshed with two chain wheels (6) between two adjacent drive riding wheels (2); and two chain wheels (6) between two adjacent drive riding wheels (2) in other positions are connected through double-chains (4). Through the adoption of the structure that the double-row gear of the motor is directly meshed with the corresponding chain wheels; and the two chain wheels between two adjacent drive riding wheels (2) in other positions are connected through the double-chains, the riding wheel transmission mechanism has the advantages that the equable transmission of the workpiece with small draw ratio and high quality is realized; and production efficiency can be adjusted and optimized by arranging a gradient adjusting device between a riding wheel base and the frame.

A driving mechanism comprises: (i) an actuator comprising: an electro-mechanical conversion element; a driving member which is connected to one end of the electro-mechanical conversion element and moves in accordance with elongation or contraction of the electro-mechanical conversion element; and a weight member provided on the other end of the electro-mechanical conversion element; and (ii) a driven member frictionally engaged with the driving member, wherein the actuator allows the driven member to move along the driving member, and the weight member comprises a member which reduces a resonance frequency of the actuator.

Provided is a photosensitive drum driving assembly, a photosensitive drum assembly, a process cartridge, and an image forming apparatus. The driving assembly including a supporting body and an engaging protrusion is connected to a drive shaft having a triangular twisted hole to transfer a rotary driving force from an image forming apparatus. The engaging protrusion twistedly protrudes to be inserted into the twisted hole, and includes three or more line contact portions on its cross-section perpendicular to the protrusion direction. The line contact portions are in line-contact with the surface of the twisted hole, and at least one portion of a surface formed by continuously joining the line-contact portions along the protrusion direction is a twisted contact-surface to receive the rotary driving force transferred by the drive shaft.

The invention discloses an inclination adjusting device. Through the setting of a sliding block mechanism and an articulated mechanism of the inclination adjusting device, a robot bearing platform hasa reliable and stable degree of freedom in the vertical driving direction, thereby achieving the effect that the inclination adjusting device is high in reliability, good in rigidity and smooth in movement.