35results about How to "Reduce jacking force" patented technology

The invention discloses a midline deviation rectifying method for a sedimentary offset ballastless track. The midline deviation rectifying method comprises the following steps that (1) the uplifting quantity and the offset quantity of the sedimentary offset ballastless track line are determined; (2) the track structure characteristics are combined, a grouting uplifting hole is formed in the top surface of the ballastless track structure, and grouting uplifting material is injected into a ballastless track supporting layer or under a base plate through a grouting pipe installed in the grouting hole by adopting high-pressure grouting equipment under a certain grouting pressure according to the determined equipment parameters and the grouting steps, so that an overall ballast bed and the upper structure of the ballastless track are uplifted; (3) a jacking and pushing point is arranged on the side surface of the ballastless track structure, a jacking and pushing device is installed, and the ballastless track line is rectified to the designed position through the jacking and pushing process of grouping loading and jacking and pushing step by step; and (4) after the midline is rectified, the line recovery work is timely conducted, a lower gap of the overall ballast bed of the ballastless track is filled with a filling material, a fastener system is finely adjusted, and the line smoothness is recovered.

The invention provides a synchronous towing, pushing and tunneling device of underground box culvert or pipeline construction, relating the technical field of building construction machinery. The invention solves the technical problems of increasing suitability for a construction field, tunneling length and construction work efficiency. The synchronous towing, pushing and tunneling device comprises a push jack set, a tunneling machine head, a pull jack set and a plurality of cables, wherein the push jack set is arranged in a starting well, a cable reactive wall is arranged in a receiving well, the pull jack set is arranged on the cable reactive wall, at least four horizontal directional holes are drilled between the starting well and the receiving well along a designed axis direction, the cables are respectively laid into the horizontal directional holes, one end of each cable is connected and fixedly locked with the pull jack set in the receiving well, the other end of each cable is fixedly connected with the head of the tunneling machine head, and a cable self-locking mechanism which is used for stopping the cables is arranged on the pull jack set. The synchronous towing, pushing and tunneling device of underground box culvert or pipeline construction is suitable for various sizes of reinforced concrete or steel structure culverts or pipelines with rectangular and circular sections.

An underground water guiding and draining system under an impermeable membrane of an industrial waste residue storage yard is arranged in a mountain body (20) below a impermeable membrane (10) in a storage yard, and comprises a main guiding-leaking blind ditch (30), a branch guiding-leaking blind ditch (40) and a water guiding blind ditch (50), wherein the main guiding-leaking blind ditch is arranged at the lowest position of a valley, and the length of the main guiding-leaking blind ditch extends to the downstream of the storage yard along the tail end of the storage yard; the branch guiding-leaking blind ditch is arranged by surrounding the storage yard along the hillside surrounding the storage yard, a plurality of leaking water grooves for containing water leaking from the hillside are arranged on a guiding-leaking pipe in the branch guiding-leaking blind ditch, and a water outlet is arranged at one end of the branch guiding-leaking blind ditch positioned at the downstream of the storage yard; and the branch guiding-leaking blind ditch and the main guiding-leaking blind ditch are communicated with each other by a plurality of water guiding blind ditches or solid-wall HDPE (High-Density Polyethylene) water guiding pipes, which are arranged at intervals. The underground water guiding and draining system forms spider net shape under the impermeable membrane of the waste residue storage yard, so that underground water can be drained effectively, the support force on the impermeable membrane caused by underground water can be reduced, the upheaval and cracking of the impermeable membrane can be prevented, so that the completeness of the impermeable membrane can be kept, and the impermeable function of the impermeable membrane can be guaranteed.

The invention discloses an anti-rotary device of a single oil cylinder support boot. The anti-rotary device comprises an oil cylinder arranged between a middle shield and a tail shield in a connected mode, the support boot is arranged at the front end of a piston rod of the oil cylinder in a connected mode, and anti-rotary mechanisms are symmetrically arranged, at the two sides of the left-right symmetrical center line of the support boot, on the support boot; and each anti-rotary mechanism comprises a supporting piece and a keeping piece, wherein each supporting piece extends out the upper surface of the support boot and is matched with the inner surface of the tail shield in a contact mode, and each keeping piece is arranged on the support boot and drives the corresponding supporting piece and the inner surface of the tail shield to be kept in close contact elastically. According to the anti-rotary device of the single oil cylinder support boot, the supporting pieces at the left and right sides support at two left-right symmetrical points of the support boot, can be kept in close contact with the inner surface of the tail shield, and both generate rolling friction with the inner surface of the tail shield, rolling fraction force is large, rotating of the support boot is prevented effectively, it is ensured that the support boot cannot scratch the inner surface of the tail shield, the support boot cannot be in contact with duct piece seal, the probability of damage of the duct piece seal due to pushing is reduced, and the efficiency and quality of duct piece assembling is guaranteed.

The invention discloses a truss string structure internally provided with inclined guy ropes. The truss string structure comprises a top chord, a web member, knot sleeves, a lower cable and the inclined guy ropes, wherein the top chord is connected with the web member in a penetrating manner by way of welding, the lower end of the web member is connected with the knob sleeves, the lower cable penetrates through both rear ends of each knob sleeve and is fixed on support knobs at both ends respectively, the inclined guy ropes are symmetrically arranged, the lower ends of the inclined guy ropes are fixed on the support knobs and the upper ends of the inclined guy ropes are connected with the fixed knot of an upper cable; the fixed knot of the upper cable can be any intersection point between the top chord and the web member in a span scope of the truss string structure which is 1/5 to 1/3 far from adjacent support knobs. A pre-tress system which can provide bidirectional resistance is formed by the lower cable and the inclined guy ropes and the system can be suitable for wind suction loads. The truss string structure disclosed by the invention further has the advantages of small use level of steel products, simple structure, low preparation cost, good performance, easy construction and the like.

The invention discloses an offshore wind power large-diameter steel pipe pile which comprises a steel pipe pile body and lifting lugs; the steel pipe pile body is formed by welding a plurality of steel pipe pile pipe sections in a butt joint manner; the lifting lugs are fixed on the outer wall surface of the upper half part of the steel pipe pile body; and a plurality of vent holes are uniformly distributed in the middle of the second steel pipe pile section below the pile top of the steel pipe pile body along the peripheral wall surface of the pile, and the vent holes are staggered from auxiliary components on the steel pipe pile body. According to the offshore wind power large-diameter steel pipe pile, the vent holes are formed, gas in the pile can be exhausted in time, the jacking forceof compressed gas in the pile on a hydraulic hammer can be effectively reduced, the situation that the hydraulic hammer is separated from the steel pipe pile during pile sliding is eliminated, and damage to a large construction ship and the large hydraulic hammer is avoided.

A vertical circulation type intelligent stereo garage u-turning mechanism comprises a jacking device and a rotating device. The rotating device comprises a rotating fluted disc which is located on a base and is connected with and bears the jacking device and a motor reducing gear driving the rotating fluted disc to rotate. The jacking device is composed of a jacking lead screw installed on the rotating fluted disc, a synchronous belt wheel, a synchronous belt and a jacking motor reducing gear. The jacking device and a car containing plate are of a separated structure. Stable rotation and high operation efficiency are achieved, the jacking force of the jacking device is improved, and the internal garage space needed in the steering u-turning motion process of the u-turning mechanism is reduced. The u-turning mechanism is used for automobile u-turning when cars are stored in an intelligent stereo garage, a vertical circulation type intelligent stereo garage and a twin-tower vertical circulation type intelligent stereo garage.

The invention provides a cable laying construction method. The method comprises the steps of 1, setting a pipeline for laying a cable; 2, arranging a cable jacking well and a cable receiving well, and carrying out pipeline jacking operation from the cable jacking well to the cable receiving well by adopting a pipeline jacking device underground so as to lay a pipeline; and 3, laying three cables A, B and C in the same loop into the same pipeline so as to realize the laying of the cables, wherein the pipeline is formed by inserting or welding a plurality of pipe sections. According to the cable laying construction method, the pipeline of the cable can be laid in a non-excavation ground mode, so that cable laying is achieved, and the excavation amount is greatly reduced. In addition, according to the method, the construction period can be greatly shortened, and the quality and the service life of the laid cable are guaranteed.

The invention relates to the technical field of punching shearing machining, in particular to a full-automatic punching shearing machine. The full-automatic punching shearing machine comprises a punching shearing platform, a transmission unit and a workbench, wherein the punching shearing platform is installed on the workbench, the transmission unit is installed at one position close to the workbench and comprises a base, motors, stirring wheels, top rods, supporting wheels, transmission belts and electromagnetic strips, the base is installed at one position close to the workbench, the surfaceof the base is symmetrically provided with through holes, and the side wall of the bottom end of the base is provided with first chutes, and the motors are installed to the base side walls close to the first chutes. According to the full-automatic punching shearing machine, by means of coordination of the punching shearing platform, the transmission unit and the workbench, the fixing function onblanks in the transportation process is enhanced, the friction force on the blanks on the surfaces of the transmission belts is enhanced, the situation that the blanks slide on the surfaces of the transmission belts due to the own gravity of the blanks is further avoided, so that normal work of the punching shearing machine is guaranteed, and the work efficiency of the punching shearing machine isimproved.

The invention discloses a hemiplegia training assisting device for health care assistance, wherein the device comprises a bearing plate and a plurality of supporting blocks; the bottom of the bearing plate is fixedly connected with a plurality of first lifting rods, the tops of the plurality of supporting blocks are fixedly connected with second lifting rods, and the first lifting rods are inserted into the second lifting rods; and locking screws are fixedly connected between the first lifting rods and the second lifting rods. Through cooperative use of the bearing plate, a leg training frame, a moving groove, a training plate, a first threaded rod, a second threaded rod, a third threaded rod, a training shaft, a training spring and a top plate, a first threaded plate, a second threaded plate and a third threaded plate move rightwards by shifting a rotating handle, so that the force of the training spring on the top plate is reduced, the jacking force of the top plate to a training plate can be reduced by adjusting the rotating handle, then the jacking force to the legs of the patient can be controlled, and rehabilitation training of the legs of the patient can be achieved through progressive jacking force.

The invention provides a bidirectional nut locking device and a combined roller. The bidirectional nut locking device is used for clamping accessories on a shaft and comprises a shaft shoulder, locking nuts, a driving mechanism and a fixing mechanism; the shaft shoulder is arranged in the middle of the shaft, and the locking nuts are arranged at the two ends of the shaft; the driving mechanism isused for driving the locking nuts to lock and sleeve the accessories on the shaft on the two sides of the shaft shoulder; and the fixing mechanism is connected with the shaft shoulder. Compared with the prior art, the locking device has the characteristics of high efficiency, simple and reliable structure, long service life and low cost, and is particularly suitable for application occasions witha narrow locking space for multi-slitting rolling of copper bars; and the combined roller adopts bidirectional locking to share the axial jacking force, so that the single-side minimum jacking force is reduced by 40%, the reliability of assembling the combined roller is greatly improved, and therefore the working capacity of the combined roller under the condition of the narrow designed locking space is improved.