CN215801777U - Multi-group bolt fixing structure - Google Patents

Abstract

The utility model discloses a multi-group bolt fixing structure which comprises a positioning jig frame and a plurality of bolt positioning templates arranged along the positioning jig frame, wherein a plurality of embedded bolts are arranged on the bolt positioning templates, the bolt positioning templates are fixedly connected with the positioning jig frame through a connecting plate, and the bolt positioning templates are fixedly connected with the connecting plate through the embedded bolts. The utility model adopts the independent positioning jig frame to hang and fix the embedded bolts, avoids the disturbance generated in the construction process of a template supporting system and a steel bar of a base surface, the positioning jig frame is finely processed in a factory and has certain rigidity, the positioning of the bolt positioning template for positioning a plurality of groups of bolts can be realized through the positioning adjustment of the positioning jig frame, the same positioning jig frame is taken as a reference, the relative position accuracy of different groups of bolts can be ensured, and the positioning accuracy of the group bolts can be improved.

Description

Multi-group bolt fixing structure

Technical Field

The utility model relates to the technical field of construction engineering equipment foundations, in particular to a multi-group bolt fixing structure.

Background

In recent years, the industry and the construction industry of China are rapidly developed, a large number of large equipment installation projects appear in the engineering construction fields of water conservancy and hydropower, bridges, industrial and civil buildings and the like, and in the prior art, the large equipment is fixedly connected with a concrete foundation in a bolt embedding mode.

When the fixing structure of the embedded bolt in the prior art is applied to a plurality of groups of large dynamic load equipment which operates in a coordinated mode, the embedding precision of the bolt in a single group is required to be high, and the precision of the relative position between the groups of equipment is required. In the practical use, the normal operating and the life of equipment can directly be influenced to the accuracy of relative position between the multiunit equipment, however, in the actual work progress, there is inevitable disturbance in the concrete equipment basis work progress, the concrete equipment basis of higher requirement need guarantee concrete once only pour, the screw rod of high strength bolt can not adopt the welded fastening mode because of the material reason for the many groups bolt location on concrete equipment basis is the difficult problem of equipment foundation construction always, prior art is difficult to guarantee the accuracy of many groups bolt location.

The above disadvantages need to be improved.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a multi-group bolt fixing structure.

The technical scheme of the utility model is as follows:

the utility model provides a many groups bolt fastening structure, including location bed-jig and along a plurality of bolt locating template that the location bed-jig set up, set up a plurality of pre-buried bolts on the bolt locating template, bolt locating template pass through the connecting plate with location bed-jig fixed connection, bolt locating template pass through pre-buried bolt with connecting plate fixed connection.

The positioning jig frame comprises combined longitudinal beams arranged on two sides and a plurality of combined cross beams arranged between the combined longitudinal beams, the combined longitudinal beams and the combined cross beams are welded to form a double-layer or multi-layer structure, the combined longitudinal beams are of an I-shaped structure, and the combined cross beams are respectively connected with the middle concave parts of the combined longitudinal beams arranged on the two sides, so that the combined longitudinal beams are fixedly connected with the combined cross beams.

Furthermore, the connecting plates comprise a middle connecting plate and side connecting plates, the middle connecting plate is arranged between the combined longitudinal beams on two sides, all the side connecting plates are arranged on the same side of one of the combined longitudinal beams, and the side connecting plates are provided with connecting rib plates which are fixedly connected with the protruding parts of the combined longitudinal beams.

Still further, the width of the joint of the combined longitudinal beam and the middle connecting plate is smaller than that of the combined longitudinal beam at the rest part, and the center line of the side connecting plate is aligned with the position closest to the middle connecting plate.

According to the multi-group bolt fixing structure, the bolt positioning template comprises a middle bolt positioning template and a side bolt positioning template, the middle bolt positioning template is arranged in the middle of the positioning jig frame through a middle connecting plate, and the side bolt positioning template is arranged on the same side face of the positioning jig frame through a side connecting plate.

According to the multi-group bolt fixing structure, the supporting columns are arranged below the positioning jig frame at intervals, the supporting beams are arranged between the supporting columns and the positioning jig frame, and the supporting beams stretch across two sides of the positioning jig frame and extend out of the edge of the positioning jig frame.

Furthermore, the upper surfaces of the supporting columns are all located on the same horizontal plane.

Further, the supporting cross beam is arranged below the combined cross beam of the positioning jig frame.

According to the multi-group bolt fixing structure, the bolt anchor plates are arranged on the lower portions of the embedded bolts, and the plurality of welded steel bars are arranged between the bolt anchor plates, so that all the bolt anchor plates arranged on the same bolt positioning template form a whole.

In the multi-group bolt fixing structure, the upper part of the positioning jig frame is uniformly provided with the plurality of lifting lugs.

In the multi-group bolt fixing structure, the center line of the bolt positioning template is aligned with the center line of the connecting plate.

In the multi-group bolt fixing structure, the diameter of the bolt hole in the bolt positioning template is larger than that of the embedded bolt, and the difference between the diameter of the bolt hole and the diameter of the embedded bolt is 2 mm.

According to the scheme, the positioning jig frame has the advantages that the independent positioning jig frame is adopted to hang and fix the embedded bolts, disturbance generated in the construction process of a template supporting system and a steel bar of a base surface is avoided, the positioning jig frame is subjected to finish machining in a factory and has certain rigidity, positioning of the bolt positioning templates for positioning by a plurality of groups of bolts can be realized through positioning adjustment of the positioning jig frame, the same positioning jig frame is taken as a reference, the relative positions of different groups of bolts can be ensured to be accurate, and the positioning accuracy of the group bolts is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a positioning jig frame.

Fig. 3 is a schematic side view of the present invention.

Fig. 4 is a schematic view of a connection structure of the bolt positioning template and the positioning jig.

Wherein, in the figures, the respective reference numerals:

1. positioning a jig frame; 11. combining the longitudinal beams; 12. combining the cross beams; 13. a middle connecting plate; 14. a side connection plate; 15. lifting lugs;

2. reinforcing the system; 21. a support pillar; 22. a support beam;

3. positioning the template by the middle bolt; 4. positioning the template by using a side bolt; 5. embedding bolts in advance; 6. embedding an anchor plate; 7. fastening a nut; 8. and (4) equipment foundation.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. The terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and should not be construed as limiting the technical solution. "Multi" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

The utility model provides a bolt fastening structure of many groups, as shown in figure 1, including location bed-jig 1 with along a plurality of bolt positioning template of location bed-jig 1 setting, set up a plurality of buried bolts 5 in advance on the bolt positioning template, bolt positioning template passes through connecting plate and location bed-jig 1 fixed connection, bolt positioning template passes through buried bolt 5 in advance and connecting plate fixed connection.

As shown in fig. 2, the positioning jig 1 is formed by welding the combination longitudinal beams 11 and the combination transverse beams 12, the combination longitudinal beams 11 are arranged on both sides, the plurality of combination transverse beams 12 are uniformly arranged between the two combination longitudinal beams 11, and the positioning jig 1 is formed after welding. The combined longitudinal beam 11 is made of I-shaped steel, and the I-shaped steel can be stacked to form a double-layer or multi-layer structure according to requirements. The combined cross beam 12 is arranged between each layer of combined longitudinal beams 11, and two ends of the combined cross beam 12 are respectively and fixedly connected with the concave parts of the I-shaped structures of the combined longitudinal beams 11.

The combined longitudinal beam 11 is fixedly connected with the middle connecting plate 13 at intervals, and the width of the part, connected with the middle connecting plate 13, of the combined longitudinal beam 11 is smaller than that of the other part, so that the combined longitudinal beam is in an inwards concave shape. The two closest combined cross beams 12 at the left end and the right end of the middle connecting plate 13 are connected with side connecting plates 14, connecting ribbed plates are arranged on the side connecting plates 14, and the upper end parts of the connecting ribbed plates are fixedly connected with the protruding parts of the I-shaped structures of the combined longitudinal beams 11.

In addition, as shown in fig. 3, the positioning jig 1 is further provided with a reinforcing system 2, that is, a plurality of support columns 21 with equal height are arranged below the combined cross beam 12, and the upper surfaces of the support columns 21 below the same positioning jig 1 are all on the same plane. And a supporting beam 22 is arranged above the supporting column 21, a combined beam 12 is arranged above the supporting beam 22, and the supporting beam 22 is respectively and fixedly connected with the supporting column 21 and the combined beam 12. The supporting beams 22 cross the two sides of the positioning jig frame 1 and extend to the outside of the positioning jig frame 1. The supporting columns 21 and the supporting beams 22 form a reinforcing system 2 for positioning the jig frame 1.

In one embodiment, a plurality of lifting lugs 15 are uniformly arranged on the upper surface of the positioning jig frame 1.

As shown in fig. 4, the positioning jig 1 is connected with the middle bolt positioning template 3 through the middle connecting plate 13, and is connected with the side bolt positioning template 4 through the side connecting plate 14. The embedded bolts 5 penetrate through the connecting plates and the bolt positioning templates to connect the connecting plates with the bolt positioning templates, and the connecting plates are welded below the combined longitudinal beams 11 and the combined transverse beams 12. Thus, a plurality of groups of bolts are formed to form an equipment foundation.

The lower part of the embedded bolt 5 is provided with an embedded anchor plate 6, bolts of the same group are welded by thin steel bars to form a whole with the embedded anchor plate 6, and the integrity between the anchoring strength and the bolts of the group is improved. The fastening nuts 7 are respectively arranged above the bolt positioning template and below the embedded anchor plate 6 of the embedded bolt 5, and the position and the fastening degree of the embedded bolt 5 are adjusted.

In one embodiment, a base with a multi-group bolt fixing structure is constructed by the following steps:

and S1, preparing for processing. Designing a component and manufacturing a corresponding mechanical structure in a processing workshop, wherein specific considerations are as follows;

(1) after the structural design of the positioning jig frame 1 is completed, as shown in fig. 1, the positioning jig frame 1 is provided with an upper lifting lug 15 and a lower supporting point, the upper lifting lug 15 and the lower supporting point are located at the same plane position, the rigidity before the lifting and after the installation of bolts is checked, and the vertical deformation of the positioning jig frame 1 is ensured to be not more than 1mm by adopting a double-layer or multi-layer I-steel combined beam 12.

(2) When the positioning jig frame 1 is manufactured in a factory, the positioning jig frame 1 adopts ground lofting, and then a connecting plate is welded. The connecting plate and the bolt positioning template are fixed by 4-hole bolts, 4 bolt holes at the corner of the connecting plate correspond to bolt holes in the bolt positioning template, the aperture of the connecting plate is larger than the diameter 1mm of the embedded bolt 5, and a scriber is used for engraving the central line of the bolt positioning template on the connecting plate.

(3) The bolt positioning template, the base cushion plate and the equipment base are provided by a manufacturer by adopting numerical control matched drilling, the consistency of hole distance errors is ensured, the central line mark is carved, and the front side, the back side and the direction are marked.

And S2, preparing on site. Because the utility model utilizes the independent positioning jig frame 1 system to hang and fix the embedded bolt 5, thereby avoiding the disturbance in the construction process of the concrete equipment foundation template supporting system and the reinforcing steel bar and assisting the positioning of the embedded bolt 5, the positioning jig frame 1 needs to be installed and positioned before the embedded bolt 5 is installed, and the positioning accuracy is ensured.

The installation of concrete equipment foundation formwork and support frame thereof is accomplished on site, form template and corresponding reinforcement system 2, and in the work progress, equipment formwork and reinforcement system 2 mounting height surpass concrete placement height and are not more than 50mm, prevent that the too high installation of positioning bed-jig 1 of influence of template from. And the reinforcement of the corresponding reinforcement system 2 only finishes the reinforcement of the bottom and the side, the upper part reinforcement is simply fixed after being arranged, and the reinforcement is bound after the embedded bolt 5 is installed.

The supporting columns 21 of the positioning jig frame 1 are installed by using a field tool, the supporting beams 22 of the positioning jig frame 1 are installed according to the installation height of the embedded bolts 5 and the structure of the positioning jig frame 1, and all the supporting beams 22 need to be consistent in elevation, so that the positioning jig frame 1 finally erected on the beam support is located on a plane. Meanwhile, a precise control net and a control elevation are arranged on site, and the precision of the base structure of the positioning jig frame 1 is guaranteed.

And S3, installing the positioning jig frame 1.

The positioning jig 1 is hoisted by a crane and mounted on the supporting beam 22 to align the longitudinal and transverse control axes as much as possible. After the positioning jig frame 1 is installed, the elevation of the positioning jig frame 1 is rechecked, so that all the positioning jig frames 1 are positioned on one plane, and the positioning jig frame 1 is subjected to precise fine adjustment in the horizontal direction by using a precise total station or a theodolite.

And 4 pre-embedded bolts 5 are used for installing the bolt positioning template on the connecting plate and adjusting to enable the central line of the bolt positioning template to be aligned with the central line of the connecting plate fixed on the positioning jig frame 1, and the pre-embedded bolts 5 are screwed and fixed.

And S4, installing the embedded bolt 5.

According to bolt locating template's screw position symmetry installation buried bolt 5 in advance, single bolt adopts bolt locating template top and 2 nuts in total below to realize fixing, goes up the nut and hangs the setting, carries out the elevation adjustment through last bolt, and behind the elevation adjustment, the lower nut of screwing up buried bolt 5 in advance is fixed.

And rechecking the verticality of the embedded bolt 5, ensuring that the embedded bolt 5 is uniformly stressed, and reducing other stress obstacles. After rechecking the verticality of the embedded bolts 5, the bolt anchor plates are sequentially welded and fixed by using short steel bars and are connected into a whole. And continuously rechecking the centering position of the bolt positioning template in the welding process. And after the embedded bolts 5 and the bolt anchor plates are installed, the binding of the foundation steel bars of the concrete equipment is perfected, and the embedded bolts 5 are avoided in the binding process of the foundation steel bars of the concrete equipment and are not contacted with each other as much as possible. And finally, positions of the center line and the control point of the jig frame 1 are checked and positioned, so that accurate and error-free post-acceptance is ensured.

And S5, pouring concrete.

Concrete is poured in a layered mode, the lower portion of the bolt anchor plate is poured firstly, after vibration is finished, the blanking speed is slowed down, the concrete pouring body is gradually increased, symmetrical blanking is completed, vibration is carried out simultaneously, the concrete is prevented from being piled up on one side, and the height difference is prevented, so that the embedded bolts 5 are deviated.

And S6, removing the positioning jig frame 1.

After concrete pouring is finished and covering and maintaining are carried out for a plurality of days, nuts of bolts arranged on the connecting plates are loosened, the positioning jig frame 1 is separated from the bolt positioning template, and the positioning jig frame 1 is slowly jacked up by using a jack. And after the positioning jig frame 1 is separated from the bolt positioning template, the tower crane is matched with the bolt positioning template to remove the positioning jig frame 1. And loosening nuts on the bolt positioning templates in sequence according to the setting positions, dismantling the bolt positioning templates, cleaning and roughening the base layer, and simultaneously releasing positioning lines on the concrete pouring body according to the precise control net.

And S7, mounting a base plate.

And (3) installing a base cushion plate, and adjusting the leveling nuts at 4 corners by using the cooperation of a precision level gauge to enable the base cushion plate to reach the designed elevation. Adjusting the axis position of the base cushion plate, installing leveling nuts at 4 angles, fastening and fixing the base cushion plate, and tightly pushing the lower bolt against the base cushion plate. And (4) installing a grouting template, and grouting by adopting high-strength non-shrinkage grouting material through the grouting hole of the base cushion plate.

And S8, installing an equipment base.

And after the grouting material is maintained, loosening the upper fixing nut, mounting the equipment base, aligning the central line of the equipment base to the central line of the base cushion plate, and screwing the fixing nut.

And S9, filling zinc. In the present application, the material of the fixing metal layer is metal zinc with a low melting point.

And loosening the nut of the embedded bolt 5 to expose the gap between the bolt hole and the bolt. The quantity of the nuts loosened at one time is less than 30% of the groups of the embedded bolts 5, and the equipment base is prevented from deviating. The crucible with the sharp mouth is made of a steel plate, and the zinc block is hot-melted by oxygen acetylene flame and dropped into the crucible to form the amount of liquid zinc required by no less than about 1 bolt gap. Adjusting flame, preheating the gap of the bolt for 3-5 seconds, and pouring the hot-melted liquid zinc between the bolt and the equipment base. And after the temperature of the bolt hole is recovered to the ambient temperature, polishing the damaged primer, screwing the bolt, repairing the damaged primer, unscrewing the screw caps of a batch of bolts, and filling zinc until the zinc filling is completed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a bolt fixing structure of many groups, its characterized in that, including location bed-jig with along a plurality of bolt locating template that the location bed-jig set up, set up a plurality of buried bolts in advance on the bolt locating template, the bolt locating template pass through the connecting plate with location bed-jig fixed connection, the bolt locating template pass through buried bolt in advance with connecting plate fixed connection.

2. The multi-group bolt fixing structure according to claim 1, wherein the positioning jig frame comprises combined longitudinal beams arranged on two sides and a plurality of combined cross beams arranged between the combined longitudinal beams, the combined longitudinal beams and the combined cross beams are welded to form a double-layer or multi-layer structure, the combined longitudinal beams are in an i-shaped structure, and the combined cross beams are respectively connected with the recessed portions in the middle of the combined longitudinal beams arranged on the two sides, so that the combined longitudinal beams and the combined cross beams are fixedly connected.

3. The multi-group bolt fastening structure according to claim 2, wherein the connecting plates include a middle connecting plate and side connecting plates, the middle connecting plate is disposed between the two combined longitudinal beams, all the side connecting plates are disposed on the same side of one of the combined longitudinal beams, and the side connecting plates are provided with connecting ribs, and the connecting ribs are fixedly connected to the protruding portions of the combined longitudinal beams.

4. A multi-gang bolt fastening arrangement as claimed in claim 3, wherein the width of the junction of the composite stringer and the central web is less than the width of the composite stringer in the remainder, and the centre line of the side web is aligned with the closest point to the central web.

5. The multiple-group bolt fastening structure according to claim 1, wherein the bolt positioning templates include a middle bolt positioning template and a side bolt positioning template, the middle bolt positioning template is disposed in the middle of the positioning jig frame through a middle connecting plate, and the side bolt positioning templates are disposed on the same side of the positioning jig frame through side connecting plates.

6. The multi-group bolt fixing structure according to claim 1, wherein support columns are arranged below the positioning jig frame at intervals, support beams are arranged between the support columns and the positioning jig frame, and the support beams cross two sides of the positioning jig frame and extend out of the edge of the positioning jig frame.

7. A multi-gang bolt securing structure as claimed in claim 6, wherein the supporting cross-member is provided below the combining cross-member of the positioning jig frame.

8. The multi-group bolt fixing structure according to claim 1, wherein bolt anchor plates are provided at lower portions of the embedded bolts, and a plurality of welded reinforcing bars are provided between the bolt anchor plates, so that all the bolt anchor plates provided in the same bolt positioning template are integrated.

9. A multi-gang bolt securing structure according to claim 1, wherein the centre line of the bolt locating template is aligned with the centre line of the connecting plate.

10. The multi-group bolt fastening structure according to claim 1, wherein the diameter of the bolt hole of the bolt positioning template is larger than that of the embedded bolt, and the difference between the diameter of the bolt hole and the diameter of the embedded bolt is 2 mm.

Images