CN2099644U

CN2099644U - Hydraulic setting spanner

Info

Publication number: CN2099644U
Application number: CN 90226706
Authority: CN
Inventors: 郭爱原
Original assignee: LIAOYANG PETROLEUM CHEMICAL FI
Current assignee: LIAOYANG PETROLEUM CHEMICAL FI
Priority date: 1990-12-26
Filing date: 1990-12-26
Publication date: 1992-03-25

Abstract

The utility model relates to a hydraulic setting spanner, belonging to a tool for the inspection and repair of a petroleum chemical device, and is composed of two parts. The upper part is a hydraulic oil cylinder, the lower part is a reciprocating rotating mechanism, and the upper part and the lower part are connected together by a screw thread. A torque which is output can be indicated by a conversion table of pressure to the torque on the spanner, which can ensure that the connection point have the same and appropriate pretightening force. The torque does not need energy source which is provide by the outside world, but the torque can work with pressure oil which is provided by the manual hydraulic pump of the torque. The utility model has the advantages of simple structure, small volume, denotable sizes of the torque which is output by the spanner, convenient operation, balance state in work, no noise and no vibration, plays the role of protecting the devices which are inspected, repaired and installed, makes sealing materials work in optimum state, is beneficial for the prevention of leakage, and is ideal.

Description

Hydraulic setting spanner

The utility model belongs to the petrochemical plant service kit, is used for the hydraulicefficiency tightening spanner of fastening bolt nut.

At present, during the petrochemical plant maintenance, the fastening bolt nut all is to adopt manpower spanner, pneumatic spanner, electronic spanner usually.The moment of torsion of manpower spanner is less, for big directly bolt, be not enough to fastening nut, and the degree of combining closely of sealing surface does not reach requirement.Though the moment of torsion that the output of pneumatic spanner and electronic spanner is bigger, size that can't strict control torque if moment of torsion is excessive, makes bolt be in yield situation, and the while, excessive thrust can cause encapsulant to follow the string, and did not have sealing function.In addition, pneumatic spanner and electronic spanner complex structure, maintenance cost is big, in real work, provide source of the gas and power supply by the external world, because of can not providing these energy, the scene can not use sometimes, moreover, in chemical plant installations equipment, the position of strict requirement of explosion proof is arranged, ban use of the pneumatic spanner and the electronic spanner that may produce spark.

The objective of the invention is to overcome the problem of pneumatic spanner and the existence of electronic spanner, design a kind of can the use in any environment, do not need the external world that the energy is provided, but by the hydraulic hand-pump that carries, the novel hydraulic that the pressure oil that provides gets final product work tighten spanner.It is simple in structure; volume is little; spanner output torque size can be indicated, and is easy to use, steady during work; there is not noise; not vibrations shield to the maintenance installed device, and encapsulant can be worked in the best condition; benefiting to preventing to leak, is a kind of desirable service kit.

Technical solution of the present invention is, the spanner body is made up of two parts, and top is hydraulic jack, and the bottom is a reciprocating rotating mechanism, middlely is integral by being threaded.

In conjunction with the accompanying drawings and embodiments, the invention will be further described.

Fig. 1 is the assembling schematic diagram of hydraulicefficiency tightening spanner.

The oil cylinder cover of hydraulic jack (2) and cylinder barrel (3) are by being threaded, the centre is provided with O RunddichtringO (12), hydraulic quick coupler (11) is housed on oil cylinder cover (2), be used for the input of pressure oil, piston in the reciprocating rotating mechanism (4) is contained on the splined sleeve (6), compress with nut (16), O RunddichtringO (13) is housed on the piston (4), splined sleeve (6) outer surface is processed with the bull square thread, be processed with the bull square thread that mates with splined sleeve (6) at body (5) inner surface, internal spline is processed in splined sleeve (6) inside, match with splined shaft (7), rolling bearing (14) and back-moving spring (15) are housed on the splined shaft (7), cylinder barrel (3) and body (5) be with being threaded, and counter-force arm (9) and body (5) are with the pin location, and screw is fastening, handgrip (8) is connected with counter-force arm (9), uses screw tightening angle indicating dial (10) at splined shaft (7) top.

The duty of hydraulicefficiency tightening spanner is axial rotary, the pressure oil of exporting when hydraulic hand-pump passes through hydraulic quick coupler (11), enter hydraulic jack, promote piston (4), because of the piston other end is processed with the bull square thread, piston can be rotated in thread bush to advance, piston just can change certain angle in certain stroke, this Power of Spin by the spline in the piston pass to remove the splined shaft (7) that is connected of cover on, make its rotation, reach the purpose of jack panel, like this, whenever logical pressure oil, just angle of nut screwing clamping can be mentioned spanner, piston returns under the promotion of back-moving spring (14), perform the preparation of fastening nut next time, the counter-force arm that is produced when overcoming fastening nut by counter-force arm (9).

The moment of torsion of this hydraulicefficiency tightening spanner output; can by with the supporting hydraulic hand-pump of spanner on the indication of ' pressure-moment of torsion ' conversion table, can guarantee that there is identical, the suitable tight power of giving the bolt junction, and leaks for preventing; the protection encapsulant has played good action.

Hydraulicefficiency tightening spanner of the present invention has changed the method for jack panel traditionally, can use in any environment, be particularly useful under the duty,, make the nut loosening of connecting portion owing to shake, cause the static seal point of connecting portion to leak the position that need tighten.It does not need the external world that the energy is provided, but by the hydraulic hand-pump that carries, the pressure oil that provides gets final product work; it is simple in structure, and volume is little, and spanner output torque size can be indicated; easy to use; steady during work, there is not noise, not vibrations; the maintenance installed device is shielded; encapsulant being worked in the best condition, benefit to preventing to leak, is a kind of desirable service kit.

Claims

1, a kind of hydraulicefficiency tightening spanner, it is characterized in that forming by two parts, top is hydraulic jack, the bottom is a reciprocating rotating mechanism, the oil cylinder cover of hydraulic jack (2) and cylinder barrel (3) are by being threaded, the centre is provided with O RunddichtringO (12), hydraulic quick coupler (11) is housed on oil cylinder cover (2), piston in the reciprocating rotating mechanism (4) is contained on the splined sleeve (6), compress with nut (16), O RunddichtringO (13) is housed on the piston (4), splined sleeve (6) outer surface is processed with the bull square thread, be processed with the bull square thread that mates with splined sleeve (6) at body (5) inner surface, internal spline is processed in splined sleeve (6) inside, matches with splined shaft (7), on the splined shaft (7), rolling bearing (14) and back-moving spring (15) are housed, and cylinder barrel (3) and body (5) are with being threaded.

2, hydraulicefficiency tightening spanner according to claim 1 is characterized in that at splined shaft (7) top with screw tightening angle indicating dial (10).