CN208496818U - A kind of fixation device facilitating pretension bolt - Google Patents

Abstract

The utility model discloses a kind of fixation devices for facilitating pretension bolt, it is related to bolt axial force detection technique field, it solves the problems, such as the easy tilting of test specimen during tools for bolts ' pretension, including fixed two position-limited racks on the table, is laterally fastened on the locating part above position-limited rack and the locking assembly for locking locating part；The position-limited rack includes the first vertical plate and the second vertical plate, and the both ends of test block to be checked are erected in the U-type groove among the first vertical plate and the second vertical plate.By the utility model, when being pre-tightened using spanner to bolt, the torque effect that the both ends of test specimen will not be generated because of spanner is upturned worker, and test specimen effectively fix by locating part, keeps the preload process of bolt more convenient.

Description

A kind of fixation device facilitating pretension bolt

Technical field

The utility model relates to bolt axial force detection technique field, in particular to a kind of fixed dress for facilitating pretension bolt It sets.

Background technique

High-strength bolt is attached, due to being influenced by parts or equipment bolt quality and installation, equipment breakdown It often occurs.Wherein, bolt pretightening is insufficient, causes bolt looseness, parts or equipment operational shock are excessive, and bolt takes for a long time Under labour, shear fracture ultimately causes the large percentage of major accident, studies carefully its main cause, is that bolt quality itself is unqualified.? In installation process, if bolt is preloaded more than range limit, bolt can be plastically deformed, or even be pulled off；If spiral shell Bolt is preloaded less than range lower limit, can generate gap among two connecting components, in the process of running, especially bad working environments when, Increase about 95% when the stress ratio of parts is normal, causes bolt that brittle fracture occurs.The tightness of bolt, is directly related to machine The service life of part or equipment, for bolt status, it is necessary to which axle power detection is carried out to mounted bolt.

Before carrying out bolt axial force detection test, first have to for bolt being tightened on the test specimens such as steel plate, on the steel plate generally Multiple bolts to be detected can be worn, when turning the bolt of steel plate side using spanner, due to torque there are the another of steel plate Side can be upturned, and need artificially to be downwardly applied to pressure to fix it on the ground, and operation is inconvenient, and spend human and material resources, Therefore it needs to design a kind of device that steel plate can be fixed during tools for bolts ' pretension.

Utility model content

The purpose of this utility model is to provide a kind of fixation devices for facilitating pretension bolt, can be in the mistake of tools for bolts ' pretension Steel plate effectively fix in journey, and structure is simple and easy to implement.

The above-mentioned purpose of the utility model, which has the technical scheme that, a kind of facilitates consolidating for pretension bolt Determine device, including fixed two position-limited racks on the table, is laterally fastened on locating part above position-limited rack and for will The locking assembly that locating part is locked；The position-limited rack include the first vertical plate and the second vertical plate, the two of test block to be checked End-rack is located in the U-type groove among the first vertical plate and the second vertical plate.

By using above-mentioned technical proposal, locating part limits the bounce of test specimen in the vertical direction, and worker uses spanner When pretension bolt, the both ends of test specimen will not be upturned, to keep operation more convenient, while save manpower.

Preferably, being fixed with articulated shaft on the lateral surface of first vertical plate, one end of the locating part is hinged on On articulated shaft；The locking assembly is fixed on the lateral surface of the second vertical plate, and the other end of the locating part is locked at locking On component.

By using above-mentioned technical proposal, locating part around position-limited rack rotating opening and can be fastened on position-limited rack, be locked simultaneously Tight component can lock locating part, facilitate worker operation.

Preferably, the locking assembly includes fastening screw, the first fixed frame and the second fixed frame, described first is fixed It it is provided with first on frame wears plate and second and wear plate, third is provided on second fixed frame and wears plate, the positioning is inserted Pin is laterally threaded through three and wears on plate and locating part.

By using above-mentioned technical proposal, locking assembly uses fastening screw, and effective position can be carried out to locating part, and Structure is simply easily achieved.

Preferably, the locating part bends downward far from one end of articulated shaft and offers location hole, the location hole Plate is worn positioned at second and third is worn between plate, and the fastening screw is threaded through positioning hole.

By using above-mentioned technical proposal, fastening screw is threaded through in location hole, and positioning method is more direct, is limited simultaneously The rotation of locating part, test specimen will not jack up locating part.

It wears plate and second preferably, fastening screw is located at first and wears and be provided with fin on part between plate, institute It states and is located at fin and first on fastening screw and wears the part between plate and be arranged with the spring in compressive state.

By using above-mentioned technical proposal, bolt pin rod and spring cooperate, and since spring force acts on, fastening screw can be certainly Dynamic return is self-locking, avoids that the mobile bolt opening and closing of former linear type is difficult, problem that cannot be self-locking, while fin can be to spring Position-limiting action is played in end, and spring is made to be unlikely to pop up from the hole for wear plate.

Preferably, the fin is the annular ridge being circumferentially arranged along fastening screw.

By using above-mentioned technical proposal, spring can be more stably connected on fin.

Preferably, one end of the fastening screw has been bent to form handle.

By using above-mentioned technical proposal, the dynamic pulling fastening screw of manpower can be more convenient.

Preferably, first fixed frame is U-shaped frame, second fixed frame is L-type frame, and bottom surface portions are fixed On the lateral surface of the second vertical plate.

By using above-mentioned technical proposal, keep the integral installation of locking assembly more stable.

In conclusion the utility model has the following beneficial effects:

1. by the cooperation of position-limited rack and locating part in the utility model, worker is pre-tightening bolt using spanner When, the torque effect that the both ends of test specimen will not be generated because of spanner is upturned, and keeps the preload process of bolt more convenient.

2. one end of locating part is hinged on position-limited rack, rotatably opens and be fastened on above position-limited rack, mode of operation is more Simply.

3. locking assembly is threaded through in the location hole of locating part one end, it is effectively fixed to carry out to the locating part after fastening Position, limits the rotation of locating part, prevents from being jacked up by test specimen.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the partial schematic diagram of locking assembly.

In figure, 1, position-limited rack；11, the first vertical plate；12, the second vertical plate；2, locating part；21, articulated shaft；22, it positions Hole；3, locking assembly；31, fastening screw；311, pin rod；312, handle；313, fin；32, the first fixed frame；321, it first wears If plate；322, second plate is worn；33, the second fixed frame；331, third wears plate；34, spring.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

The utility model create description in, it is to be understood that term " center ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown is merely for convenience of the creation of description the utility model and simplifies description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.

A kind of fixation device facilitating pretension bolt, as shown in Fig. 1, including two position-limited racks 1 being oppositely arranged, limit Position frame 1 is a kind of U-shaped frame, and horizontal component is fixed on the table, and vertical portion includes that the first vertical plate 11 and second is vertical Plate 12, the both ends of test block to be checked are placed in the U-type groove between the first vertical plate 11 and the second vertical plate 12, position-limited rack 1 Top is provided with the locating part 2 beated for limiting test specimen in vertical direction.

Articulated shaft 21 is provided on the lateral surface of first vertical plate 11, one end of locating part 2 is hinged on articulated shaft 21, makes Locating part 2 is rotated and can laterally be taken around articulated shaft 21 and is placed on the first vertical plate 11 and the second vertical plate 12, and locating part 2 is far from hinge One end of spindle 21 is stretched out to the lateral surface direction of the second vertical plate 12, and a location hole is offered on the part bent downward 22, be provided with locking assembly 3 on the lateral surface of the second vertical plate 12, locking assembly 3 be threaded through in location hole 22 by locating part 2 into Row locking.

As shown in Fig. 2, locking assembly 3 includes fastening screw 31, the first fixed frame 32 for wearing fastening screw 31 With the second fixed frame 33.First fixed frame 32 and the second fixed frame 33 are oppositely arranged, and are provided with first on the first fixed frame 32 and are worn If plate 321, second wear plate 322, it is provided with third on the second fixed frame 33 and wears plate 331, first wears plate 321, second wears If plate 322 and third wear and offer perforating on plate 331 respectively, and the axis of three perforatings is overlapped；Fastening screw 31 wraps The horizontal pin rod 311 being threaded through in perforating is included, one end of pin rod 311 bends downward to form handle 312, and fastening screw 31 is located at First, which wears plate 321 and second, wears and is provided with a circle fin 313 on part between plate 322, and fin 313 can be by pin rod 311 It is stuck in second to wear at plate 322, wears the part between plate 321 positioned at fin 313 and first on pin rod 311 and be arranged in pressure The spring 34 of contracting state, specifically, the operating range of fin 313 is greater than fin 313 at a distance from 311 end of pin rod；Limit 2 closed state lower Positioning holes 22 of part are located exactly at second and wear plate 322 and third is worn between plate 331, and fastening screw 31 passes through Location hole 22 and third wear the perforating on plate 331 and lock locating part 2.

When it is implemented, first bolt to be detected is threaded through on several blocks of steel plates, steel plate simply fix, then will The both ends of steel plate are from top to bottom erected in the U-type groove among position-limited rack 1, the handle 312 of locking assembly 3 are pulled, by pin rod 311 Top be returned to second and wear at plate 322, then by locating part 2 be fastened on second wear plate 322 and third wear plate 331 it Between, handle 312 is unclamped, due to 34 rebound effect of spring, pin rod 311 passes through location hole 22 automatically and third is worn on plate 331 Perforating, complete return it is self-locking, at this time when worker's spanner pretension bolt, due to the effect of locating part 2, the both ends of steel plate are not It can be upturned because of torsion that spanner generates, when pretension bolt is more convenient.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (8)

1. a kind of fixation device for facilitating pretension bolt, it is characterised in that: including fixed two position-limited racks on the table (1), the locating part (2) above position-limited rack (1) and the locking assembly for locking locating part (2) are laterally fastened on (3)；The position-limited rack (1) includes the first vertical plate (11) and the second vertical plate (12), and the both ends of test block to be checked are erected at the In U-type groove among one vertical plate (11) and the second vertical plate (12).

2. a kind of fixation device for facilitating pretension bolt according to claim 1, it is characterised in that: described first is vertical It is fixed on the lateral surface of plate (11) articulated shaft (21), one end of the locating part (2) is hinged on articulated shaft (21)；The lock Tight component (3) is fixed on the lateral surface of the second vertical plate (12), and the other end of the locating part (2) is locked at locking assembly (3) on.

3. a kind of fixation device for facilitating pretension bolt according to claim 2, it is characterised in that: the locking assembly packet Fastening screw (31), the first fixed frame (32) and the second fixed frame (33) are included, is provided with first on first fixed frame (32) It wears plate (321) and second to wear plate (322), is provided with third on second fixed frame (33) and wears plate (331), it is described fixed Position bolt (31) is laterally threaded through three and wears on plate and locating part (2).

4. a kind of fixation device for facilitating pretension bolt according to claim 3, it is characterised in that: the locating part (2) One end far from articulated shaft (21) bends downward and offers location hole (22), and the location hole (22) is located at second and wears plate (322) it is worn between plate (331) with third, the fastening screw (31) is threaded through in location hole (22).

5. a kind of fixation device for facilitating pretension bolt according to claim 3, it is characterised in that: the fastening screw (31) it is located at first and wears plate (321) and second and wears and be provided with fin (313), the positioning on part between plate (322) The spring in compressive state is arranged with positioned at the part that fin (313) and first are worn between plate (321) on bolt (31) (34).

6. a kind of fixation device for facilitating pretension bolt according to claim 5, it is characterised in that: the fin (313) For the annular ridge being circumferentially arranged along fastening screw (31).

7. a kind of fixation device for facilitating pretension bolt according to claim 3, it is characterised in that: the fastening screw (31) one end has been bent to form handle (312).

8. a kind of fixation device for facilitating pretension bolt according to claim 3, it is characterised in that: first fixed frame It (32) is U-shaped frame, second fixed frame (33) is L-type frame, and bottom surface portions are each attached to the outside of the second vertical plate (12) On face.