28 results about "Straight pull" patented technology

The invention discloses an optical module which comprises an upper cover and a base which are spliced with each other and provided with installation grooves symmetrically distributed in the two sides, and the two ends of each installation groove are provided with a first notch and a second notch respectively. The mouse cage is provided with a tongue piece, and the mouse cage is matched with the upper cover and the base which are spliced in an inserted mode; the unlocking connecting rod is arranged in a space formed by butt joint of the mounting grooves in the upper cover and the base after splicing, the two ends of the unlocking connecting rod extend to the first notch and the second notch respectively, and the unlocking connecting rod comprises a rotating part; the unlocking mode is equivalent to a semi-automatic structure, the jacking height of the unlocking boss of the unlocking connecting rod can be changed according to the acting force of the unlocking key, and the height can be adjusted to adapt to the assembly difference caused by the fact that a plurality of parts are matched with a dimensional tolerance chain; the problem of size chain matching of conventional straight pull type and rotary pull rings and an unlocking piece is solved, the risk of unlocking failure is avoided, and the unlocking stability is improved.

The utility model relates to the technical field of fasteners, and provides a longitudinal straight-pull self-expansion type joint anchor bolt, which comprises a plurality of through grooves arranged at one end of an expansion pipe, the through grooves are circumferentially arranged, the expansion pipe is provided with a plurality of clamping parts, and the clamping parts are circumferentially arranged and are used for being clamped with the external environment. By means of the technical scheme, the problem that in the prior art, when different top wall materials are used, the good anchoring effect is often difficult to achieve is solved.

This utility model discloses a front passenger airbag structure with internal pull straps, including an airbag body and internal pull straps disposed within the airbag body. The internal pull straps include a cross-shaped pull strap and a straight pull strap. The upper and lower ends of the cross-shaped pull strap are sewn to the left and right sides of the inner surface of the middle panel of the airbag body, and its left and right ends are sewn to the inner surfaces of the left and right sides of the airbag body. One end of the straight pull strap is sewn to the center of the cross-shaped pull strap, and its other end is sewn to the air inlet of the airbag body. The internal pull straps of this utility model can serve as a platform to meet the performance requirements of different working conditions. The X-axis pull strap can restrict airbag deployment, reducing airbag stiffness to handle frontal working conditions of small dummies and avoid neck overload. The Y-axis pull strap can control the airbag deployment width, suppressing excessive lateral expansion of large-volume airbags and avoiding the risk of screen collapse.

The utility model discloses a kind of riveting structure of tail box lock body, including upper lock body, lower lock body, upper lock body is installed on tail box, lower lock body is installed on box body, upper lock body includes upper lock surface cover, upper lock cover snap fastener, upper lock bottom cover, upper lock surface cover, upper lock cover snap fastener, upper lock bottom cover are connected by two groups of first riveting pin riveting connection between them, lower lock body includes lower lock surface cover, lower lock cover snap fastener, lower lock bottom cover, lower lock surface cover, lower lock cover snap fastener, lower lock bottom cover are also connected by two groups of first riveting pin riveting connection between them, riveting process of this structure is rotated by " rotation + axial pressure " riveting pin material uniform plastic deformation, form " surface contact " lock, axial, lateral, shear force can be simultaneously borne, torque attenuation rate is substantially reduced compared with traditional straight pull nail, can long-term maintain lower lock body to the stable connection of box body and tail frame, avoid tail box shaking in driving.

A narrow-version small-fall wading heavy truck axle comprises a front axle and a steering knuckle assembly, the upper portion and the lower portion of the inner side of the steering knuckle assembly are arranged on steering knuckle pins in a sleeving mode respectively, a straight pull rod arm is further arranged at the top of the inner side of the steering knuckle assembly, and a brake assembly is fixed to the outer side wall of a disc-shaped structure of the steering knuckle assembly. A front hub capable of rotating freely is supported on the periphery of the cylindrical structure of the steering knuckle assembly through a tapered roller bearing, a multi-lip box type oil seal and an O-shaped sealing ring are sequentially arranged between the inner end of the cylindrical structure of the front hub and the outer side wall of the disc-shaped structure of the steering knuckle assembly from outside to inside, and the outer end of the front hub is covered with a hub end cover for sealing. According to the utility model, the multi-lip box type oil seal design is adopted, and the interference and O-shaped sealing ring design is adopted at the shaft diameter part of the steering knuckle, so that muddy water and sundries are effectively prevented from invading; an O-shaped sealing ring design is adopted at the axle diameter of the knuckle, so that external dust and muddy water are effectively prevented from entering, and normal operation of parts is guaranteed after the vehicle wades into water.

The invention discloses an intelligent double two-for-one twisting and beating all-in-one machine. A plurality of straight pull type magnetic damping two-for-one twisting units and a two-for-one twisting and beating all-in-one unit are sequentially arranged. The straight pulling type magnetic damping two-for-one twisting unit comprises a plurality of feeding assemblies and magnetic damping tension adjusting assemblies corresponding to the feeding assemblies, bobbins can be directly installed on the feeding assemblies, and yarn bundles are pulled through rollers to drive the feeding assemblies to passively rotate to release yarn. The magnetic damping tension adjusting assembly adjusts rotation of the yarn bundle feeding assembly by generating reverse damping force so as to balance tension of all strands, instant braking is carried out when the machine stops due to inertia of a rotating component driving a yarn bundle, and meanwhile single-yarn two-for-one twisting is completed. The two-for-one twisting and beating integrated unit comprises a speed regulating roller, a second twisting hollow spindle blade, a transmission assembly, a reciprocating cycloid device and a magnetic coupler beating shaft which are independently driven, the second twisting hollow spindle blade drives two sets of synchronous belt transmission structures to act through a conical tooth meshing structure, and synchronous operation of second twisting, wire arranging and winding and beating is achieved.

The invention discloses aircraft training production testing equipment, and relates to the technical field of unmanned aerial vehicle testing, the aircraft training production testing equipment comprises a testing assembly and a pulling assembly, the testing assembly comprises a vertical plate, the pulling assembly comprises a mounting ball, a pulling rope and a fracture part, and the fracture part comprises a first pulling rope, a second pulling rope, a sliding shell, an electromagnet and a magnet; the two ends of each pulling rope are arranged on the corresponding vertical plate and the corresponding mounting ball correspondingly, and the lengths of the pulling ropes are sequentially increased from top to bottom; during testing, the pulling ropes are sequentially pulled and straightened from top to bottom; the two ends of the first pull rope are fixed to the sliding shell and the mounting ball respectively, the electromagnet is fixed in the sliding shell, and the magnet is fixed to one end of the second pull rope and slidably arranged in the sliding shell. Staged straightening can be realized during testing of the unmanned aerial vehicle through a plurality of rubber pulling ropes of which the lengths are sequentially increased from top to bottom; a dynamic interference process that a single-side arm, an undercarriage or a fuselage of the unmanned aerial vehicle is gradually wound by a plurality of branches, electric wires and vines is simulated in sequence, and a complex winding scene is covered.

The utility model relates to a high-rigidity gapless steering drag link assembly, and belongs to the technical field of automobile parts. The high-rigidity gapless steering straight pull rod assembly comprises a transverse pull rod, a connecting mechanism, a right ball head and a left ball head, one end of the transverse pull rod is provided with a right ball head through a connecting mechanism; the other end of the transverse pull rod is welded and connected with an extension rod; one end of the extension rod is connected with a left ball head through a rivet and a stamping rib plate; the connecting mechanism comprises a locking hoop and a connecting sleeve; a locking hoop is arranged on the outer side of one end of the transverse pull rod; a connecting sleeve is inserted into one end of the transverse pull rod; and a right ball head is inserted into one end of the connecting sleeve. The high-rigidity gapless steering straight pull rod assembly is compact in structure and ingenious in design, solves the problem that an existing pull rod assembly is insufficient in flexural rigidity through the connecting mechanism, and is particularly suitable for the use requirement of an automobile steering system.

The application discloses a circular mechanical connecting piece for a concrete member, which comprises a foundation pit guard plate, a side pulling piece, a circular connecting piece, a straight pulling piece, a middle connecting piece, a middle pulling piece and a reinforcing bar connecting piece, the foundation pit guard plate is composed of four sides to form a fence shape, a plurality of sinking pulling holes are formed through the outer side of the foundation pit guard plate, and matching inclined surfaces are formed on opposite sides of the foundation pit guard plate, the side pulling piece comprises a basket bolt piece; the hollow ring structure of the annular pipe piece makes the stress relatively stable, the inner reinforcing rib on the inner side is used for increasing the structural stress intensity, the side auxiliary hole and the cross pipe piece are used for making the annular pipe piece structure stress reduction, the key point position is provided with an opening to make the stress relatively stable, the structure action force is indirectly increased, a plurality of stable positions and connecting point positions are provided for the connection of the structural piece, the relative stability of the structure is ensured, and the concrete connection stress point position is increased, so that the relative stability of the structure is ensured.

A firearm locking linkage mechanism and a firearm using the same relate to the technical field of firearm internal parts, the firearm comprises a gun body, a trigger group and a firearm locking linkage mechanism, and the firearm locking linkage mechanism is arranged in a cavity arranged in the gun body and excited by the trigger group; the firearm locking linkage mechanism comprises a pulling plug, a pushing and ejecting rod, a locking piece and a driving hammer, the pulling plug is connected with the pushing and ejecting rod, the locking piece abuts against the limiting end face of the pushing and ejecting rod to form limiting in a locking state, and an unlocking part used for making contact with the locking piece and opening the locking state is arranged on the pulling plug; a transmission part is arranged between the bullet pushing rod and the driving hammer, and a first elastic reset piece is arranged between the driving hammer and the inner wall of the gun body; a kidney-shaped hole is formed in the pull plug, a linkage pin which is matched with the kidney-shaped hole and can directionally move in the kidney-shaped hole is arranged on the push-elastic rod, and the unlocking part forms an inner opening and locking state when the pull plug moves relative to the push-elastic rod; according to the utility model, on the premise that no electronic element is needed, the efficiency of simulation feedback and straight pulling operation is compatible.

The utility model discloses an auxiliary feeding device for a straight drawing machine, and relates to the technical field of metal material machining, the auxiliary feeding device comprises a feeding storage frame, the feeding storage frame is arranged on the side portion of the drawing trolley end of the straight drawing machine, and the side, close to the straight drawing machine, of the feeding storage frame is lower than the other side of the feeding storage frame; one end, close to the core rod of the straight pulling machine, of the feeding storage rack is lower than the other end; the feeding conveying assembly comprises a conveying roller, the conveying roller is arranged on the lower side of the feeding storage frame, the height of the conveying roller is larger than that of the straight pulling machine, and the conveying roller is driven by a motor arranged on the feeding storage frame to rotate; and the core rod lifting assembly is arranged on the straight drawing machine and drives the core rod to ascend and descend. Therefore, the problem of low production efficiency of the copper pipe straight drawing machine is solved, the pipe penetrating and feeding speed is increased, the labor intensity of workers is reduced, the labor cost is reduced, and the production efficiency is improved.

The utility model discloses a straight pull type device for a full-automatic on-site foaming coiled material feeding mechanism, which comprises a right protective plate, a left protective plate and a film mounting frame, a rear connecting rod sheet and a front connecting rod sheet are arranged on the inner side of the right protective plate and the inner side of the left protective plate, a connecting rod is arranged between the right protective plate and the left protective plate, and a film mounting frame is arranged on the film mounting frame. The connecting rod penetrates through the two sets of front connecting rod pieces, spring locks are installed on the two sides, close to the rear portion, of the film mounting frame, handles are installed on the two sides, close to the front portion, of the film mounting frame, a film mounting roller is arranged on the inner side of the right protection plate, the film mounting roller is wrapped with a foaming coiled material, and pull ropes are arranged between the handles and the spring locks. According to the straight pull type device for the full-automatic on-site foaming coiled material feeding mechanism, film loading is labor-saving and convenient, the working stability is improved, an operator is far away from a machine, the straight pull type device is safer to use, and the straight pull type device is suitable for more working sites.

The utility model relates to the technical field of plunger assembly closing-in devices, in particular to a straight pull type rotary feeding mechanism for plunger assembly spinning closing-in, which comprises a rack, a chuck mechanism, a chuck straight pull mechanism and a clamping mechanism arranged in the chuck mechanism and used for clamping a plunger assembly. The chuck mechanism comprises a backward pulling chuck, at least two movable clamping jaws are arranged on the backward pulling chuck, and rolling mechanisms are fixed to the movable clamping jaws. The chuck straight-pull mechanism comprises a straight-pull driving mechanism, a chuck pull rod, an upper jacking plate and a guide shaft, the straight-pull driving mechanism is connected with the upper jacking plate by connecting the guide shaft, the top of the chuck pull rod is connected with the movable clamping jaw, and the bottom of the chuck pull rod is connected with the upper jacking plate. The straight pulling driving mechanism drives the chuck pull rod to move up and down and drives the movable clamping jaw and the rolling mechanism to move in the radial direction of the backward pulling chuck to be close to or away from the plunger assembly. The plunger assembly spinning mechanism is high in spinning feeding synchronization precision, and the technical problems that an existing plunger assembly spinning mechanism is poor in spinning feeding synchronization precision, large in equipment size and high in manufacturing cost can be solved.

The invention relates to a humanoid robot leg structure which comprises thighs, knee joints, shanks and feet. The thigh part comprises a second motor, the knee joint comprises a second pull rod, and the shank part comprises a third motor, a first shank pull rod, a second shank pull rod and a first flange plate; the foot part comprises a straight pull rod, a front support and a rear support; one end of the straight pull rod is connected with the second motor through the second pull rod; the front support is connected with the rear support; one ends of the first shank pull rod and the second shank pull rod are connected to the two sides of the first flange plate respectively, and the other ends of the first shank pull rod and the second shank pull rod are connected to the two sides of the rear support respectively. Compared with the prior art, a second motor is adopted to drive a straight pull rod to achieve pitching motion of feet, and a third motor is adopted to drive a first shank pull rod and a second shank pull rod to achieve rolling motion of the feet; and the pitching motion and the rolling motion are independently controlled by an independent motor and do not interfere with each other, so that the control difficulty of the foot motion is greatly reduced, and the like.

The utility model is applicable to the technical field of supports, and provides an adjustable pipeline anti-seismic support which comprises two straight pull pieces and an inclined pull piece, the two straight pull pieces are connected with a supporting piece, the supporting piece comprises a scissor fork mechanism and a driving mechanism, each straight pull piece comprises a vertical rod, a vertical sleeve and a lead screw, the inclined pull piece comprises a telescopic rod and an adjustable hinge, and the scissor fork mechanism is connected with the telescopic rod. According to the adjustable pipeline anti-seismic support, the straight pulling piece, the inclined pulling piece and the supporting piece are arranged, the supporting piece comprises the shear fork mechanism and the driving mechanism, the two-way screw rod is rotated, the two-way screw rod drives the two threaded sleeves to be close to or away from each other, the two threaded sleeves drive the shear fork mechanism to stretch or retract, and therefore the adjustable pipeline anti-seismic support is convenient to use. The distance between the two straight pulling pieces is increased or shortened, adjustment can be conducted according to the distribution width of the pipelines, the supporting width is adjusted, and adaptability is higher.

The application belongs to the field of aircraft cabin door hinge mechanism, and particularly relates to a translationally outward-opening cabin door hinge mechanism. The translationally outward-opening cabin door hinge mechanism comprises a main hinge support with a first connecting part and a second connecting part; a lifting assisting assembly comprising a lifting sleeve and a spline shaft, the lifting assisting assembly being connected with the cabin door through a hinge joint; a first main hinge arm being hinged with the first connecting part of the main hinge support, a second main hinge arm being hinged with the lifting sleeve of the lifting assisting assembly, and a double-ear rocker arm mounting support being arranged on the second main hinge arm; a double-ear rocker arm being hinged with the double-ear rocker arm mounting support, the double-ear rocker arm having a first rocker arm part and a second rocker arm part; one end of a main rocker arm being connected with the spline shaft of the lifting assisting assembly; one end of a curved pull rod being hinged with the other end of the main rocker arm, the other end of the curved pull rod being hinged with the first rocker arm part of the double-ear rocker arm; one end of a straight pull rod being hinged with the second rocker arm part of the double-ear rocker arm, and the other end of the straight pull rod being hinged with the second connecting part of the main hinge support.

A rifle having a straight pull bolt assembly with a bolt handle that extends outward and downward from a bolt operation mechanism. The bolt handle rotatable a limited rotational range forward and rearwardly about a horizontal axis for operating the mechanism. The handle can be reconfigured to position its rotational range about the horizontal axis and can be attached to the mechanism at either left or right sides to provide for ambidextrous operation. Bolt heads, lower frame members with magazine wells, and barrel assemblies can be readily swapped to change ammunition. The bolt assembly can be unlocked by firing or by a thumb push button release at the backside of the mechanism. A bolt removal release mechanism is forward of the thumb pushbutton and an ejector includes a spring bias and cam follower surface to reliably eject casings.

The present invention discloses a method for manufacturing and assembling a cable and hydraulic combined curved clamp kit that replaces a straight pull rod, comprising the following steps: S1, manufacturing the various components that constitute the curved clamp kit, wherein the manufactured components can only be combined with adjacent components in the curved clamp kit through later assembly; S2, inserting and securing a guide tube into a hydraulic pipe; S3, passing a cable through the pipe from one end thereof, with a portion of the cable extending from both ends of the pipe; S4, connecting the ends of the cable to an upper hydraulic piston and a lower hydraulic piston, respectively; S5, installing the upper hydraulic piston rod and the lower hydraulic piston rod on the upper end surface of the upper hydraulic piston and the lower end surface of the lower hydraulic piston, respectively; S6, inserting the upper hydraulic piston and the lower hydraulic piston into an upper hydraulic cylinder and a lower hydraulic cylinder, respectively; S7, sealing and securing the upper hydraulic cylinder and the lower hydraulic cylinder to the upper and lower ends of the hydraulic pipe, respectively. The initial blanks of the hydraulic pipe and the guide tube manufactured in step S1 are both straight pipes.

The application discloses a continuous plate-pulling optimized single-arm manipulator and a continuous plate-pulling cake-unloading mechanism of a filter press, and belongs to the technical field of filter presses.The manipulator comprises a single-arm plate-pulling hook, a plate-pulling hook pin shaft, a manipulator support, a hook-elongating spring and a support mounting pin shaft.The key points of the innovative scheme are as follows: (1) simplifying the structure of the manipulator: omitting unnecessary parts, so that the movement processes of the parts of the constituent parts no longer interfere with each other; (2) improving the manipulator support and innovating a cross-chain center installation mode, so that the pulling force of the manipulator does not deviate from the chain, that is, the oblique pulling mode is improved into a straight pulling mode to effectively avoid chain jamming; and (3) optimizing the structure design of the plate-pulling hook: creating a round-steel bending type single-arm plate-pulling hook, so that the plate-pulling hook pressing process has small linear contact friction resistance, and the plate-pulling hook is light in weight and flexible in plate grabbing and unhooking.The continuous plate-pulling cake-unloading mechanism uses the manipulator, solves the related technical problems, has the functions of continuously and automatically pulling open filter plates block by block to unload cakes and pulling together the filter plates after the cakes are unloaded, and has technical comprehensive innovation and product upgrading and efficiency increasing.

The invention discloses a transfer clamp for an oversized titanium alloy frame type forge piece and a using method, and relates to the technical field of transfer clamps. The device comprises a manipulator and two symmetrical L-shaped beams, two straight pull rods are fixedly connected to the tops of the L-shaped beams, the straight pull rods are movably connected into clamping arms of the manipulator in a sleeved mode, a plurality of supporting rods are installed on the opposite sides of the two L-shaped beams, a plurality of gaskets used for adjusting the height of the manipulator are movably connected to the outer portions of the straight pull rods in a sleeved mode, and a plurality of inserting openings are formed in the L-shaped beams at equal intervals. And the supporting rods are movably inserted into the corresponding insertion openings. According to the invention, a plurality of support rods capable of adjusting the insertion positions according to the length, width and support requirements of the forge piece are arranged on the opposite sides of the two symmetrical L-shaped beams, and the support rods are locked by the fixing frames, the fixing holes and the fixing bolts, so that multi-point support can be formed to disperse the weight of the oversized titanium alloy frame forge piece; deformation caused by overlarge single-point stress is prevented, and damage caused by local suspension of the forge piece can be avoided.

The invention discloses a mirror body bending adjusting mechanism capable of reducing additional secondary stress, which is characterized by comprising a translation hinge, a torsion hinge, two connecting units, a base and two platforms, the connecting unit comprises a straight pulling plate, an inclined pulling plate and four joint hinges; the two ends of the base are respectively connected with a platform through a connecting unit; wherein one platform is connected with one end of a mirror body to be bent through a translation hinge, and the other platform is connected with the other end of the mirror body through a torsion hinge; one end of a straight pulling plate in the connecting unit is connected with one end of a base through a joint hinge, the other end is connected with the lower end face of a platform through a joint hinge, one end of an inclined pulling plate is connected with one end of the base through a joint hinge, and the other end is connected with the lower end face of the platform through a joint hinge. The inner sides of the two platforms are each provided with a force exerting device fixing hole site. In the same connecting unit, the intersecting line of the joint hinge middle face connected with the straight pulling plate and the joint hinge middle face connected with the inclined pulling plate coincides at the mirror body neutral layer of the mirror body.

The utility model relates to the technical field of straight pull rods, in particular to a reinforced straight pull rod structure which comprises a straight pull rod, a first reinforcing rod and a second reinforcing rod. An insertion ring is arranged at the end of the extension rod, a scale rod is arranged in the insertion ring, and a moving groove is formed in the end of the extension rod; the open groove is formed in the straight pull rod; the straight pull rod has the beneficial effects that the first reinforcing rod is fixed to the bending position of the straight pull rod, the first reinforcing rod plays a supporting role, when the first reinforcing rod is bent, the extension rod can move, the scale rod at the end of the extension rod moves along with the extension rod, the scale rod enters the straight pull rod, scales are arranged on the surface of the scale rod, and therefore the straight pull rod is convenient to use. Whether the scale rod moves or not can be clearly seen, an inserting ring is inserted into the end of the extension rod, the surface of the scale rod is sleeved with the inserting ring, scales on the surface of the scale rod are prevented from being abraded, the thickness of the moving groove is larger than that of the inserting ring, and the inserting ring is prevented from being clamped after deformation.

A firearm having a straight pull bolt action operating mechanism. The firearm has a lower receiver housing a trigger assembly, an upper receiver having a longitudinal axis, and a bolt carrier assembly within the upper receiver. The bolt carrier assembly has a bolt carrier, a bolt, a follower element, and an operating component. The bolt is received by the bolt carrier and is configured to rotate about the longitudinal axis. The operating component is configured to be manually operated by a user.

The utility model relates to a straight pulling steel chisel structure, and relates to the field of steel chisel body connecting structures, the straight pulling steel chisel structure comprises a steel chisel body and a buckle, one end of the steel chisel body is provided with a clamping piece, the buckle has a certain deformability, the buckle is provided with a mounting groove, the side wall of the buckle is provided with a buckle opening, and the buckle opening is provided with a through hole. And the clamping piece can penetrate through the buckle opening to be inserted into the mounting groove. The steel chisel recovery device has the effect of conveniently recovering the steel chisel body.

A firearm having a straight pull bolt action operating mechanism. The firearm has a lower receiver housing a trigger assembly, an upper receiver having a longitudinal axis, and a bolt carrier assembly within the upper receiver. The bolt carrier assembly has a bolt carrier, a bolt, a follower element, and an operating component. The bolt is received by the bolt carrier and is configured to rotate about the longitudinal axis. The operating component is configured to be manually operated by a user.

A rifle having a straight pull bolt assembly with a bolt handle that extends outward and downward from a bolt operation mechanism. The bolt handle rotatable a limited rotational range forward and rearwardly about a horizontal axis for operating the mechanism. The handle can be reconfigured to position its rotational range about the horizontal axis and can be attached to the mechanism at either left or right sides to provide for ambidextrous operation. Bolt heads, lower frame members with magazine wells, and barrel assemblies can be readily swapped to change ammunition. The bolt assembly can be unlocked by firing or by a thumb push button release at the backside of the mechanism. A bolt removal release mechanism is forward of the thumb pushbutton and an ejector includes a spring bias and cam follower surface to reliably eject casings.

The utility model discloses a vibration reduction structure of a cable-stayed bridge, and relates to the technical field of bridge construction. Supporting columns are symmetrically and fixedly connected to the bottom of the bridge, a bridge tower is fixedly connected to the top of the bridge, a first cable-stayed part is fixedly installed on one side of the bridge tower, the other end of the first cable-stayed part is fixedly connected with the top of the bridge, and a plurality of second cable-stayed parts are evenly and fixedly connected to the top of the bridge. The vibration reduction assembly is arranged, when the multiple second straight pull pieces shake, the first connecting cylinder is driven to shake, at the moment, vibration generated between the adjacent second straight pull pieces can be relieved through a second damper on one side of a fixing plate, meanwhile, vibration generated by the second straight pull pieces can be buffered through extrusion shrinkage of a guide cylinder, and therefore the vibration reduction effect is achieved. Through cooperation of the auxiliary assembly and the vibration reduction assembly, vibration generated by the first inclined pulling piece and the second straight pulling piece can be effectively relieved, the front end and the rear end are buffered, meanwhile, the middle can be buffered, and bridge safety accidents caused after shock excitation are avoided.