46results about How to "Avoid rail gnawing" patented technology

The invention provides a rail gnawing prevention walking device self-adaptive to a rail gauge and wheel pressure. The rail gnawing prevention walking device comprises a first rail, a second rail, a driving trolley and a driven trolley. Two cross beams with sliding grooves are further arranged between the driving trolley and the driven trolley, and electric hoists are further arranged on the cross beams with the sliding grooves. The driving trolley is suspended on the first rail through a first bearing wheel, and the driven trolley is suspended on the second rail through a second bearing wheel. The driving trolley is fixedly connected with hole grooves in the cross beams with the sliding grooves through a first bolt set, and the driven trolley is movably connected with the sliding grooves in the cross beams with the sliding grooves through a double-end stud set. The electric hoists are fixed to a sliding frame through a second bolt set, and the sliding frame is in sliding connection with the sliding grooves through a T-shaped bolt set. The driving trolley is connected with a driving motor and drives the driven trolley to move synchronously through the cross beams with the sliding grooves, and the electric hoists are driven to move synchronously. By means of the technical scheme, potential safety hazards of rail gnawing and derailing of the walking device can be eliminated, and the running reliability and stability of the walking device are improved.

The invention discloses a traversing type double-trolley system. The system comprises an upper trolley and a lower trolley, wherein the lower trolley comprises a first walking mechanism and a second walking mechanism mounted on guide rails at two sides of the upper trolley in a walking manner, a rigid frame for connecting the first walking mechanism and the second walking mechanism, and a sling connected below the rigid frame; the rigid frame is provided with a structure space with the cavity size greater than the outer wall size of the upper trolley so as to allow the upper trolley to pass, and the lower trolley meets the condition that the stabilizing moment Sigma Ms of the lower trolley is greater than capsizing moment Sigma Mo; the first walking mechanism is connected with the second walking mechanism through the rigid frame; the structure space size of the rigid frame is greater than the outer wall size of the upper trolley, so that the upper trolley sling carrying a tank can directly pass through the structure space without rotating; under the condition that the stabilizing moment Sigma Ms caused by the gravity of the lower trolley is greater than the capsizing moment Sigma Mo caused by horizontal inertia force of the lower trolley, the capsizing moment Sigma Mo caused by wind load or other reasons is overcome under the effect of the stabilizing moment of the lower trolley, so that the lower trolley always maintains steady in the operational process.

The invention discloses a rail-gnawing preventing end beam device and hoisting equipment, and belongs to the technical field of hoisting equipment. The rail-gnawing preventing end beam device comprises an end beam body and a guiding mechanism. The end beam body comprises wheels rotationally arranged on the end beam body, and the wheels roll along a guide rail, namely the end beam body can move along the guide rail. The guiding mechanism comprises a box, a transmission shaft, a transmission wheel and a transmission rail. The box is arranged on one side of the end beam body, internally and rotationally provided with the transmission shaft and arranged at one end of the transmission shaft in a sleeving mode. The transmission wheel is configured to move on the transmission rail, and the transmission rail and the guide rail are arranged parallelly. The transmission shaft drives the transmission wheel to move on the transmission rail so that the wheels on the end beam body can move on the guide rail, and accordingly, the end beam device moves on the guide rail; and through matching of the transmission wheel and the transmission rail, the end beam body can be guided so as to enable the wheels and the guide rail not to make contact, and the rail-gnawing phenomenon is prevented effectively. The invention further provides the hoisting equipment applying the rail-gnawing preventing end beam device

The invention discloses a novel lower trolley system. The system comprises first and second traveling mechanisms capable of traveling along first and second guide rails installed on a shore bridge girder, a rigid frame for rigidly connecting the first and second traveling mechanisms and a lifting appliance, wherein the rigid frame has a structural space through which an upper trolley passes, and a lower trolley meets the following condition: the stabilizing moment sigmaMs caused by the gravity of the lower trolley is larger than the capsizing moment sigmaMo of the horizontal inertia force of the lower trolley. The first and second traveling mechanisms of the lower trolley are rigidly connected with the lifting appliance, and when the stabilizing moment sigmaMs is larger than the capsizing moment sigmaMo, the lower trolley travels stably. During movement of the lower trolley, the lifting appliance and containers cannot shake easily, the lower trolley can travel stably, and abrasion between the first and second traveling mechanisms and the shore bridge girder is reduced; stable traveling consumes lower power than shaking traveling, and the loading and unloading efficiency of a whole shore bridge system is improved; compared with shaking traveling, stable traveling has advantages that the safety is improved, and potential risks are fewer.

The invention discloses a gantry crane with a cart capable of walking on a curved rail and a walking control method thereof. The gantry crane comprises a portal frame and a cart walking mechanism. The cart walking mechanism comprises a first walking wheel, a third walking wheel, a second walking wheel and a fourth walking wheel, wherein the first walking wheel and the third walking wheel are mounted on the lower portions of the front side and the rear side of each left supporting leg respectively, and the second walking wheel and the fourth walking wheel are mounted on the lower portions of the front side and the rear side of each right supporting leg respectively. The external diameter of the first walking wheels and the external diameter of the fourth walking wheels are both D1, the external diameter of the second walking wheels and the external diameter of the third walking wheels are both D2, D1 / D2=R, and r1 and R1 are the radius of an inner side circular arc rail and the radius of an outer side circular arc rail. The walking control method includes the steps that first, walking is achieved on a current rail section, and the specific processes comprise rail section shape judging, straight line rail section walking and circular arc rail section walking; second, the step one is repeated again and again until the walking process of the walking rail is completed. According to the gantry crane with the cart capable of walking on the curved rail and the walking control method thereof, the structure is simple, the design is reasonable, installation and arrangement are convenient, using operation is simple and convenient, the using effect is good, the cart can walk on the curved rail, and rail gnawing can be avoided.

The invention discloses an operating mechanism for a double-track trolley group of a super-large gantry crane, which includes a balance beam and a double-track trolley, and is characterized in that the double-track trolley is composed of four wheels composed of running wheels and driven wheels symmetrically arranged on both sides of the frame Double-drive mechanism, the double-track trolley is fixed at both ends of the balance beam by the hinge shaft, and the double-track trolley is hinged to the balance beam; the frame is an "I"-shaped box structure; The driving wheel of the mechanism, and the driving mechanism make the traveling wheel and the driven wheel drive the trolley group composed of two double-track trolleys to run on the track. Compared with the prior art, the present invention has the advantages of small running wheel pressure and good uniform distribution, which greatly weakens the lateral force, effectively avoids the phenomenon of rail gnawing, increases the working range, reduces the working blind area, and further reduces the construction cost. The structure is simple, which greatly facilitates the maintenance and maintenance of the equipment.