CN1009727B - Tripping device of book - Google Patents

Abstract

The present invention relates to an unhooking machine which is characterized in that three hinging levers are arranged in one supporting frame to reduce the friction of stress contacts of the levers; the transmission ratio of every lever can be increased as much as possible. The total transmission ratio of the unhooking machine is large enough. The unhooking machine can unhook a rammer with the weight of 30 to 40 tons by the single-arm force of a person at any time or can realize unhooking operation in emergency by pneumatic force or electromagnetic force which can be controlled by a driver. A stop dog and a spacing shaft are also arranged in the frame to control the displacement of every lever after unhooking operation. Impact reactive thrust is used to automatically restore positions in a static structure state. The gravity line of a static structure and the central line of the rammer are overlapped fully or approximatively to provide convenience for hooking.

Description

Tripping device of book

The present invention relates to heavy-tamping method and carry out the relevant facility device that ground is handled, come according to common existing development in kind.

Known detacher is to use when freeing departure behind the harbour or hanging the life boat safe release for ship berths, and the advantage that structure has reliable lock, hightails is applicable to and uses long or use occasion occasionally interval.But be not suitable for the frequent occasion of using, this structure comprises known two lever detachers, all can not obtain satisfied transmitting ratio.

The object of the present invention is to provide and a kind ofly can obtain the satisfactory enough big detacher of transmitting ratio, its load 25T～40T that can sling, even under the heavier situation, can be to realize the operation of manpower, aerodynamic force or electromagnetic force, satisfy the requirement that to take emergence disconnecting, guarantee safe operation.Simultaneously, this spline structure can rotate at its lever of operation, and after realization load broke away from, each lever automatically reset and is original static engagement situation.Be suitable for the frequent occasion of using, help alleviating labor intensity of operating staff, increase work efficiency.

Technical solution of the present invention is: design three lever contact structures, be that first jointed shaft (12) is housed on a bearer frame (3), second jointed shaft (9), the 3rd jointed shaft (6) and block (2), limit shaft (10), above-mentioned first jointed shaft (12) is gone up assembling second lever (11), go up assembling the 3rd lever (4) at the 3rd jointed shaft (6), design the contact K between first lever (1) and second lever (11), contact O between second lever (11) and the 3rd lever (4) all is the line engagement, design first lever (1) rotate around its jointed shaft (12) axle center pass through the tangent line of contact K of first lever (1) and second lever (11) and the contact K between above-mentioned first lever (1) and second lever (11) and be an angle in the below with the line in the 3rd jointed shaft (9) axle center, this angle is a bit larger tham the friction angle between the pressure line place metal, big angle in 8 degree scopes, to obtain its lever overall gear ratio in enough big scope, satisfy the requirement of design operation unhook power; Design block (2) is to retrain the rotation displacement of first lever (1), and design limit shaft (10) is to retrain the rotation displacement of second lever (11), and automatically reseting immediately after feasible the unhook is the static structure state; Design the center of gravity line of its assembly static structure and the suspension centre P of its lifting and the line of N and coincide, with the instantaneous vibratory force of minimizing unhook, and the suspension centre N of maintenance off the hook is in the line of centers of hammer ram.

Current domestic maximum hammer ram heavily is about 26T, consider and to develop into more than the 40T, and can be realizing the emergence disconnecting of full-time staff's operation, or the emergence disconnecting of the aerodynamic force of driver's control or electromagnetic force satisfies the requirement of safe construction, and this is a task that must solve.Because in the scene ground unfairness always of construction, ground situation complexity, natural environment is unfavorable sometimes, and " tourist bus " phenomenon, i.e. facility device unstability often take place in promoting the hammer ram process.If " tourist bus " takes place when hoisting depth is low, it is the drg that discharges crane rope hose tool circle tube that the driver should take measures, and puts rope and throws away hammer; If " tourist bus " takes place when hoisting depth is very high, hammer ram does not reach regulation as yet and breaks off relations highly, and the driver also have to take the above-mentioned rope of putting to throw away the hammer measure, but can cause the consequence that the circle tube is cracked, steel rope is scrapped; If do not take above-mentioned measure, will cause the serious consequence of car crash.Transmitting ratio of the present invention can design in 1000～2000 scopes, can meet requirements, " tourist bus " phenomenon promptly takes place in any case, and all can take the emergence disconnecting measure.In addition, when the operator controls the rotation of the 3rd lever (4) generation inhour, inhour then takes place and rotates in second lever (11), then, positive hour hands take place and rotate in first lever (1), because block (2) is spacing, counter first lever (1) the anticlockwise direction return that pushes away, at this moment, second lever (11) is because of accepting the reaction thrust of top limit shaft (10), get back to the qualification position of below limit shaft (10) already, and the bump of first lever (1) of the return of accepting to lag, inhour is rotated a displacement that makes progress again, allows first lever (1) to continue counter-clockwise return, then first lever (1) is until the reaction thrust of accepting below limit shaft (10), and beginning is made positive hour hands again and rotated.But, the very fast reaction thrust of accepting top limit shaft (10) of second lever (11), the qualification position of limit shaft (10) is accepted the bump of first lever (1), but is not allowed to have passed through below getting back to already again.The process that automatically resets that but this moment finishes is could not realize before the return as yet at the 3rd lever (4).This is a requirement that realizes easily for the operator.Improve like this that level of mechanization is favourable to be alleviated the work degree of operating personal and increase work efficiency.Also have, confirm that its center of gravity line overlaps with the line of lifting suspension centre P and N, can realize by model static structure test, thereby break off relations himself swing of instantaneous elimination aloft, can not collide arm and guarantee that off the hook always has the component at a trend center near hammer ram hammer nose next door.Like this, the hook operator need not apply horizontal thrust.

Fig. 1 is an elevation cross-sectional view of the present invention.

Fig. 2 is the local section cutaway view of Fig. 1.

Fig. 1 and Fig. 2 are that described can be with the invention example of specified lift heavy 30T hammer ram, wherein bearer frame (3) is between two thick iron plates (15), placement positioning thrust housing (14), bolt (7) is passed, locking packing ring (13) on the pad, hand-tight solid with personality board again, and by the welding block (2) consist of an integral structure.Go up the processing mating holes at bearer frame (3) and first lever (1), second lever (11) and the 3rd lever (4), the cooresponding dress jointed shaft that closes.Rely on bearer frame (3) to go up the bore hole positional precision, the contact K and the O that satisfy each lever can be with engagements correctly.Processing each lever contact position is the garden cylindricality, makes the driving link circular arc of its lever be inscribed within the driven member circular arc.To realize that contact K, O are the line engagement.Simultaneously, second lever (11) tangent line that (9) turn is ordered by O around the axle center must pass through axle center (6), and is reliable to guarantee self-locking.It is 1080 that this example can obtain overall gear ratio.The present invention is simple in structure, and manufacturing process is easy, and cost is very low, and is practical.

Claims (2)

1, a kind of detacher, the detacher that particularly strong hammer ram head is used, it has a bearer frame (3), first jointed shaft (12) is housed on this bearer frame (3), second jointed shaft (9), the 3rd jointed shaft (6) and block (2), limit shaft (10), above-mentioned first jointed shaft (12) is gone up assembling first lever (1), go up assembling second lever (11) at second jointed shaft (9), go up assembling the 3rd lever (4) at the 3rd jointed shaft (6), it is characterized in that the contact K between first lever (1) and second lever (11), the contact 0 of second lever (11) and the 3rd lever (4) all is the line engagement, rotate around its jointed shaft (12) axle center tangent line of first lever (1) that passed through and the contact K between second lever (11) and the contact K between above-mentioned first lever (1) and second lever (11) of first lever (1) is an angle with the line in the 3rd hinged (9) axle center in the below, this angle is a bit larger tham the friction angle between the pressure line place metal, big angle in 8 degree scopes.

2, detacher according to claim 1 is characterized in that: be fixed with the block (2) that first lever (1) that makes rotation recovers former static structure state automatically on bearer frame (3); On bearer frame (3), be fixed with the limit shaft (10) that second lever (11) that makes rotation recovers former static structure state automatically.