70results about How to "Sufficient locking force" patented technology

A female terminal fitting (20) has a main portion (21) that can be inserted into a cavity. An engaging portion (50) for engaging a lock (17) in the cavity is folded back from the front of the main portion (21). The fold (55) is rounded and contacts the lock (17) when the terminal fitting (20) is inserted into a cavity. Thus, resistance to insertion is low. The engaging portion (50) is distanced from an opposed surface (25) of the main portion (21) by an embossment (51). Thus, a large area of engagement with the lock (17) exists. A slanted surface (53) is formed at a corner of a locking surface (52) closer to the ceiling plate (25). Thus, the leading end of the lock (17) intrudes at the inner side of the slanted surface (53) to prevent the lock (17) from escaping.

An object of the present invention is to reduce an inserting force while ensuring a sufficient locking force. A primary engaging portion 50 engageable with a locking portion 17 is formed by folding back a portion extending from the front edge of a ceiling plate 25 of a main portion 21. A folded portion 50 of the primary engaging portion 50 is rounded. Since a female terminal fitting 20 is inserted into a cavity while bringing the rounded folded portion 55 into contact with the locking portion 17, resistance is smaller and a smaller inserting force can be realized. Since the primary engaging portion 50 is distanced from the ceiling plate 25 by way of an embossed supporting portion 51, a larger area of engagement with the locking portion 17 can be provided. Since a slanted surface 53 is formed at a corner of a locking surface 52 closer to the ceiling plate 25, the leading end of the locking portion 17 acts to intrude at the inner side of the slanted surface 53, thereby securely preventing the locking portion 17 from escaping by sliding on the locking surface 52.

The invention discloses a multifunctional trolley with a double-layer platform, and belongs to the field of carrying tools. The trolley comprises an upper-layer platform body, a bottom-layer platformbody and a pushing hand, the pushing hand is fixed at the rear portion of the bottom-layer platform body, the upper-layer platform body is installed over the bottom-layer platform body through a scissor-type lifting mechanism, and the scissor-type lifting mechanism is further internally provided with an upper-layer locking air spring; the bottom-layer platform body comprises a bottom-layer platform fixing frame and a bottom-layer platform retractable frame which are retractably matched, the rear portion of the bottom-layer platform fixing frame and the front portion of the bottom-layer platform retractable frame are provided with rolling wheels, a bottom-layer retractable air spring for keeping the bottom-layer platform retractable frame elastically extending out is arranged between the bottom-layer platform fixing frame and the bottom-layer platform retractable frame, and the rear portion of the bottom-layer platform fixing frame is provided with a linkage mechanism for driving the bottom-layer platform retractable frame to retract back. By means of the trolley, the flexible use of the double-layer platform can be achieved; the loading capacity of the double-layer trolley is improved, and the trolley is flexible and convenient to use and easier to operate.

The present invention belongs to the civil engineering in-situ test technology field, and relates to a nonmetal anti-floating anchor multi-interface shear stress combination test method. The method performs synchronization real-time measurement of axial forces and shear stresses of a nonmetal anti-floating anchor body, an anchorage body and an interface of a rock and the anchorage body, and employs a novel test device to obtain pull-out amounts of the rod body and the anchorage body to research an anti-floating anchor mechanical transmission mechanism and deformation characteristics. The nonmetal anti-floating anchor multi-interface shear stress combination test method is simple in technology, simple in structure, high in test precision, high in operationality and direct and accurate in numerical result, can obtain multi-interface shear stress of a nonmetal anti-floating anchor, and is high in applicability and feasibility.

The invention discloses a decomposition-type prestressed carbon fiber tensioning device which comprises a pair of prestressed tensioning components symmetrically fixed on a to-be-reinforced component, at least one carbon fiber board arranged between the prestressed tensioning component, a tensioning anchor connecting the end of each carbon fiber board onto the adjacent prestressed tensioning component, and at least two anchoring boards compressing the carbon fiber boards on the surface of a to-be-reinforced structure. The invention further discloses a construction method applied on the prestressed carbon fiber tensioning device. The decomposition-type prestressed carbon fiber tensioning device is simple in structural design, a prestressed carbon fiber anchor is decomposed into the reusable tensioning anchor and a flat plate anchor which is permanently fixed by means of bonding through epoxy structure glue and compressing through bolts, and the decomposition-type prestressed carbon fiber tensioning device is simple in structure and low in cost.

A magnetic-controlled actuator (100) with an auto-locking function for joints of a manipulation arm mainly includes an inner-layer stator (10), an inner-layer mover (20), an outer-layer mover (30), an outer-layer stator (40), and a fixing shaft (50). The inner-layer mover (20), the outer-layer mover (30), and the outer-layer stator (40) have a plurality of permanent magnets, respectively. The fixed shaft (50) simultaneously penetrates through the inner-layer stator (10), the inner-layer mover (20), the outer-layer mover (30), and the outer-layer stator (40) forming a coaxial arrangement. The inner-layer mover (20) rotates relatively to the inner-layer stator (10) to output power from the actuator (100). Therefore, a cogging effect, which is produced due to interaction of the permanent magnets between the outer-layer mover (30) and the outer-layer stator (40), is automatically produces a high cogging torque for the actuator (100). Thus the actuator (100) provides a sufficient locking force to lock the non-stationary inner-layer mover (20) when a power failure occurs.

The invention relates to a locking and anti-loosing mechanism of a cutting tool used for a cutting machine, which is characterized in that: one end inside a pull rod (3) and connected with a sliding sleeve (4) is provided with a cylindrical cone hole (13) with a large caliber facing outwards; the cone hole port is provided with a steel ball (5) tangent with the cone hole; an anti-loosing bolt (6) withstanding the steel ball is arranged closely to the steel ball. The mechanism can lock a knife handle stably on a broach mechanism and can effectively prevent the cutting tool from getting loose; furthermore, the mechanism has the advantages of compact structure, relatively simple production and installation and can be widely applied to high speed rotating shaft systems.

The invention discloses a multi-functional wheelbarrow and belongs to the field of carrying tools. The multi-functional wheelbarrow comprises an upper-layer platform, a bottom-layer platform and handlebars, the handlebars are fixed to the rear part of the bottom-layer platform, and the upper-layer platform is installed on vertical arms of the handlebars through a vertical lifting mechanism; the bottom-layer platform comprises a bottom-layer platform fixed frame and a bottom-layer platform retractable frame which are matched in a retractable mode, the front part of the bottom-layer platform retractable frame is provided with front wheels, the rear part of the bottom-layer platform fixed frame is provided with rear wheels, an elastic mechanism is further arranged between the bottom-layer platform fixed frame and the bottom-layer platform retractable frame, and a linkage mechanism which ascends along with the upper-layer platform to drive the bottom-layer platform retractable frame to retract is further arranged between the upper-layer platform and the bottom-layer platform retractable frame. The loading capability of the multi-functional wheelbarrow is improved, thus the wheelbarrowhas multiple functions, the upper-layer platform and the bottom-layer platform are combined organically through the linkage mechanism, the functions are coordinating, the usage is more flexible, the operation is easier, and the work efficiency is improved.

The invention provides an axial positioning device of a crushing roller, which relates to a crushing machine and solves the problems that in the prior art, the installation and the maintenance of the crushing roller are difficult, and the equipment operation reliability is poor. The axial positioning device comprises high-strength locking screw nuts, a plurality of high-strength round head propping and pushing screws and two high-strength propping and pushing gaskets, wherein the circumferential rings of the two end surfaces of the high-strength locking screw nuts are provided with a plurality of threaded holes, the two locking screw nuts are respectively matched and connected with external screw threads of the fixing end and the floating end of a roller shaft, one propping and pushing gasket is arranged between the locking screw nuts and a bearing arranged at the floating end, the other propping and pushing gasket is arranged between the locking screw nuts and a No. IV isolation ring, and the round head propping and pushing screws are connected with the threaded holes arranged on the end surfaces of the locking screw nuts. The axial positioning device is used for the axial positioning of the crushing roller of a double-tooth roller crushing machine, the service life of parts can be prolonged, in addition, the installation and the maintenance can be conveniently and fast carried out, and the production efficiency of equipment is greatly improved.

The invention provides a guardrail steel cable quick locking device which is used for being installed on the portion, close to the end of a steel cable, of the steel cable and detachably fixed to a guardrail. The locking device comprises an outer sleeve, a conical chuck, an elastic component and an installing and fixing mechanism, wherein the outer sleeve is provided with a conical through hole and a first internal thread hole which are communicated with each other, and the hole diameter of the first internal thread hole is larger than or equal to the largest hole diameter of the conical through hole. The conical chuck is provided with a clamping hole used for the steel cable to pass, a plurality of clamping teeth are arranged in the clamping hole, and the conical chuck is placed in the conical through hole of the outer sleeve. The elastic component is placed at the bottom of the conical chuck in the outer sleeve. The installing and fixing mechanism is fixedly installed on the guardrail and provided with a first external threaded rod, the first external threaded rod is combined with the first internal thread hole in a screwed mode, and the elastic component is placed at the end of the first external threaded rod. The guardrail steel cable quick locking device can be installed upwards and downwards by 0-90 degrees, and the steel cable can freely rotate by 360 degrees. The guardrail steel cable quick locking device is enough in locking force, not prone to loosening after bearing external force, wide in applicability, convenient to install and high in work efficiency.

The invention provides a circumferential locking mechanism, a battery locking device comprising the same, a power battery pack and a vehicle. The circumferential locking mechanism comprises a first component and a second component; the first component comprises a first through hole and an inner gear ring arranged around the first through hole, and the inner gear ring is provided with inner obliqueteeth distributed along the inner circumference; the second component comprises a second through hole, an outer gear ring and a tightening sleeve; the outer gear ring and the tightening sleeve are arranged around the second through hole; the outer gear ring is provided with outer oblique teeth distributed along the outer circumference; the tightening sleeve is fixed to the inner side of the outergear ring in an embedded mode, and the inner oblique teeth are suitable for being connected with the outer oblique teeth. According to the invention, the tolerance degree of the first component and the second component in the joint process is improved through cooperation of the oblique teeth on the inner gear ring and the outer gear ring; after joint is completed, locking force with enough strength can be provided in the radial direction and the circumferential direction, and it is guaranteed that the first component and the second component can be firmly jointed.

The invention discloses an automatic aligning combined clamp which comprises a rear positioning shaft (1) and a positioning air cylinder (2). The rear positioning shaft (1) is mounted at the rear part of a hollowing main shaft (3) of a machine tool; and the positioning air cylinder (2) is mounted on a guide rail of the machine tool. The automatic aligning combined clamp also comprises an externally-clamped automatic aligning chuck mechanism which comprises a chuck body, an air cylinder component, an aligning mechanism and a locking mechanism; the chuck body is mounted at the front end of the hollowing main shaft (3); the air cylinder component, the aligning mechanism and the locking mechanism are all mounted in the chuck body; the locking mechanism is radially and movably connected with the chuck body by the aligning mechanism; and the air cylinder component which can drive the locking mechanism to radially clamp a processed piece when the locking mechanism axially moves backwards is sleeved outside the locking mechanism. The automatic aligning combined clamp does not need to manually adjust the inner hole concentricity of a steel tube and can improve the production efficiency, ensure the product quality and produce products in batch.

The invention discloses a machining rocker arm type clamp device. The machining rocker arm type clamp device comprises a shell, a lock buckle, a self-locking mechanism with tap positions, a drive rod and bevel gears; a screw rod is connected to the lower end of the drive rod; the bevel gears comprise the first bevel gear and the second bevel gear, an internal thread matched with the screw rod is arranged inside the first bevel gear, the second bevel gear and the first bevel gear are matched with each other and form a certain angle, and a rocking handle is inserted into an inner hole of the second bevel gear. The machining stepping type clamp device has the dual self-locking function, the locking performance is good, the structural design is ingenious, operation is easy, the machining accuracy of work-pieces is guaranteed, the production quality of the work-pieces is improved, and the production safety is guaranteed.

The invention relates to a rear door locking device of a small-tonnage collection vehicle. The rear door locking device overcomes the defects that due to the fact that in the prior art, a rear door and a compartment are locked through a rapid clamp mechanism, looseness caused by corrosion of a sealing strip is prone to happening, and sewage is sprinkled and leaks when the rear door is not locked in place. The rear door locking device comprises lock hook bases fixed to the rear door and supporting bases fixed to the bottom of the compartment. Lock hooks capable of being locked on the lock hook bases are hinged to the supporting bases. The lock hooks are driven to rotate by an elastic telescopic lead screw which has elasticity and is adjustable in length. A hook and a hook base matched with the hook are hinged to the lateral side of the compartment. The hook is hinged to the elastic telescopic lead screw. By rotating the hook, the elastic telescopic lead screw and the hook pass a dead point to form self locking and lock the rear door. The elastic telescopic lead screw has elasticity and is adjustable in length, and after the sealing strip between the rear door and the compartment is corroded, it can be ensured that the lock hooks have enough locking force through the elasticity of the elastic telescopic lead screw.

The invention relates to a spring tension type sealing piece which is characterized in that the spring tension type sealing piece comprises a cylindrical body, the center of the cylindrical body is provided with an axial through hole, the two ends of the cylindrical body extend outwards to form an upper sealing flange portion and a lower sealing flange portion, a round seam is formed between the upper sealing flange portion and the lower sealing flange portion, the lower face of the upper sealing flange portion is provided with a plurality of upper groove holes evenly distributed in the central peripheral direction of the cylindrical body. The upper face of the lower sealing flange portion is provided with a plurality of lower groove holes evenly distributed in the central peripheral direction of the cylindrical body. The upper groove holes correspond to the lower groove holes one by one. Springs are arranged between the upper groove holes and the correspondingly opposite lower groove holes. The upper ends of the springs are located in the upper groove bodies. The lower ends of the springs are located in the lower groove bodies. According to the spring tension type sealing piece, the sealing function of gaskets can be maintained under the action of the springs, and the sealing effect is good.

The invention discloses a flying shear locking device and a mounting detection method thereof and belongs to the technical field of flying shears of rolling mills. According to the flying shear locking device, a locking hydraulic cylinder is arranged on a flying shear holder; a regulating device is arranged between the locking hydraulic cylinder and the flying shear holder; one end of a connecting device is connected with the locking hydraulic cylinder; one end of a locking hook is connected with the other end of the connecting device; a first measurement block is movably connected with the other end of the locking hook; a second measurement block is movably connected with the other end of the locking hook; and the thickness of the second measurement block is larger than that of the first measurement block. By means of the flying shear locking device and the mounting detection method thereof, the effects that the locking force of the locking cylinder is sufficient and uniform in the mounting process of the flying shear locking device, and the extension lengths are coincident during releasing are ensured, and the flying shear is stable and reliable after being assembled to the line and applied.

The invention discloses a rotary button lock. The rotary button lock comprises a lock bracket, a driving piece, a swing arm, a sliding block, a support and a pressing head, wherein the driving piece,the swing arm, the sliding block, the support and the pressing head are arranged on the lock bracket, a driving insertion hole is formed in one side of the lock bracket, a sliding groove is formed inthe other side of the lock bracket, the driving piece is sleeved with the driving insertion hole, the sliding block is installed in the sliding groove, one end of the swing arm is connected with the driving piece, the other one end of the swing arm is connected with one end of the sliding block, the support is in a bent shape, one end of the support is hinged to the lock bracket, guide grooves areformed in the middle of the support, the other end of the support is connected with the pressing head, a shifting pin is arranged at the other end of the sliding block, the end part of the shifting pin extends into the guide groove, the driving piece comprises a shaft shell and an ejector rod, the shaft shell is sleeved with the driving insertion hole, a through groove is formed in the shaft shell, and a limiting clamping block is arranged on the ejector rod. The rotary button lock is simple in structure, small in size, light in weight, convenient to install and rapid and reliable in unlocking and locking operation, no protruding structure exists on the surface of a covering cap after installation, and the better aerodynamic configuration of an aircraft is guaranteed.

The invention provides a numerically-controlled vertical rotary working table. The numerically-controlled vertical rotary working table comprises a tool body; a servo motor which is arranged on the tool body is connected with a gear reducer through screws; the gear reducer is connected with a gear; a worm is fixedly arranged on a gear which is meshed with the gear; the worm is meshed with a worm gear; an inner hole of the tool body is provided with a main shaft; the working table is fixedly arranged at one end of the main shaft; the worm gear is fixedly arranged on the main shaft; a ball bearing is arranged on one side of the worm gear and between the mains shaft and the tool body; a transition sleeve is fixedly arranged on the other side of worm gear of the tool body; a combined bearing is arranged between the main shaft and the transition sleeve; the tool body is provided with a braking oil cylinder and a braking cover; a piston is arranged in the braking oil cylinder; the end portion of the piston is provided with a braking piece which is in contact with the braking cover. According to the numerically-controlled vertical rotary working table, the bilateral sides of a worm gear pair are supported by the bearings and accordingly abrasion of the worm gear pair is greatly reduced and the bearing capability is improved and eight small piston oil cylinders are utilized to lock the rear end of the mains shaft of the rotary table tightly and accordingly enough locking force can be provided and the product cost is reduced.

The invention provides a light and simplified butt-joint locking and releasing device and a working method thereof, and the device comprises a passive end installed on a butt-joint aircraft and an active end installed on an active aircraft. The driving end comprises a lead screw capturing mechanism, a lead screw shell, a capturing in-place triggering mechanism, a transmission shell, a switch frame, a transmission gear, an unlocking in-place triggering mechanism and a locking in-place triggering mechanism, and the lead screw shell, the transmission shell, the motor frame and the switch frame are fixedly connected into an integrated structure in sequence from front to back; the lead screw capturing mechanism is arranged in the lead screw shell and the transmission shell and fixedly connected with the transmission gear, the capturing in-place triggering mechanism sequentially penetrates through the lead screw shell and the motor frame to be kept balanced under the action of the elastic force of the spring, and the locking in-place triggering mechanism and the unlocking in-place triggering mechanism are fixedly connected with the switch frame through bolts. The light and simplified butt-joint locking and releasing device is compact in structure, low in space occupancy rate, capable of being used repeatedly, firm in locking and capable of being applied to various butt-joint separation occasions.

The invention provides a guardrail steel cable quick locking device which is used for being installed on the portion, close to the end of a steel cable, of the steel cable and detachably fixed to a guardrail. The locking device comprises an outer sleeve, a conical chuck, an elastic component and an installing and fixing mechanism, wherein the outer sleeve is provided with a conical through hole and a first internal thread hole which are communicated with each other, and the hole diameter of the first internal thread hole is larger than or equal to the largest hole diameter of the conical through hole. The conical chuck is provided with a clamping hole used for the steel cable to pass, a plurality of clamping teeth are arranged in the clamping hole, and the conical chuck is placed in the conical through hole of the outer sleeve. The elastic component is placed at the bottom of the conical chuck in the outer sleeve. The installing and fixing mechanism is fixedly installed on the guardrail and provided with a first external threaded rod, the first external threaded rod is combined with the first internal thread hole in a screwed mode, and the elastic component is placed at the end of the first external threaded rod. The guardrail steel cable quick locking device can be installed upwards and downwards by 0-90 degrees, and the steel cable can freely rotate by 360 degrees. The guardrail steel cable quick locking device is enough in locking force, not prone to loosening after bearing external force, wide in applicability, convenient to install and high in work efficiency.