CN217353696U - Device for replacing rod of support net rack - Google Patents

Abstract

A device for replacing a rod of a support net rack comprises a U-shaped support, a top pull assembly, a positioning assembly, a lifting assembly and a monitoring assembly, wherein the U-shaped support comprises an open circular steel tube and a pair of strip-shaped steel plates, a U-shaped accommodating groove is formed in the U-shaped support, and a pair of flange plates are arranged at two ends of the U-shaped support; the top pulling component consists of three top pulling devices which uniformly surround the outer surface of the U-shaped support; the lifting assembly consists of a lifting screw, a lifting nut and a lifting belt and is arranged above the flange plate; the positioning assembly consists of a positioning auxiliary plate, an auxiliary plate fixing bolt, a positioning screw hole and a positioning bolt and is arranged at the flange plate; the strain monitoring mechanism consists of a strain gauge, a strain signal emitter and a display. The device simple structure, it can effectively improve the change efficiency of rack pole, and simultaneously, it can reduce operating personnel's work load to can ensure the installation effect and the life of changing back rack pole.

Description

Device for replacing rod of support net rack

Technical Field

The utility model belongs to the technical field of the steel space frame construction, concretely relates to support device of rack member replacement.

Background

The space grid structure widely applied in the building field is a reticular space rod system structure which is composed of a plurality of rod pieces according to a certain rule through bolt balls, wherein the shape and the size of the stud balls and the rod pieces are the same, the rod pieces and the node specifications are less, the production is convenient, the product quality is high, the field assembly is easy, and the construction speed can be improved. The space grid structure has the advantages of good integrity, good stability and large space rigidity, can effectively bear asymmetric load, concentrated load and dynamic load, and has excellent anti-seismic performance. Under the action of bolt ball load, each rod piece mainly bears axial tension and pressure, so that the strength of the material can be fully exerted, and steel can be effectively saved. With the continuous expansion of the application of the spatial grid technology in China, the large-span and large-space grid structures are continuously increased. Because the construction rack technical level is good and uneven, the deviation can appear in the installation of some racks, and then can lead to the fact great influence to the bolt ball rack is whole, has left great hidden danger to the security of structure. Thus, after a long time of use, a small amount of the rod member may be bent and deformed. In order to eliminate the influence of the deformation, it is necessary to modify the net frame to remove the deformed bars and replace them with normal bars. In the rod replacing process, the mode of multi-person cooperative operation is often adopted. The mode has the advantages of low replacement efficiency, large labor load, unsatisfactory installation effect of the replaced net rack rod and certain potential safety hazard.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a device that supports replacement of rack rod piece, the device simple structure can not only effectively improve the change efficiency of rack rod, the reduction operating personnel's that can show moreover work load to can ensure the security of changing back rack rod structure.

In order to achieve the purpose, the utility model provides a device for replacing the rods of a support net rack, which comprises a U-shaped support, a top pulling component, a lifting component, a positioning component and a strain monitoring mechanism;

the U-shaped support consists of an opening circular steel tube and a pair of strip-shaped steel plates, wherein the opening of the opening circular steel tube is positioned at the top, the width of the opening is smaller than the diameter of the opening, the pair of strip-shaped steel plates are vertically arranged and extend along the length direction of two ends of the opening circular steel tube and are correspondingly welded on the two end edges of the opening, a U-shaped accommodating groove penetrating through the length direction is formed in the U-shaped support, a pair of flange plates are fixedly connected to the two end parts of the length direction of the U-shaped support respectively, and each pair of flange plates are fixedly connected to the outer sides of the front end edge and the rear end edge of the opening end of the U-shaped support correspondingly; the size of the U-shaped accommodating groove is matched with that of the original rod piece to be replaced; the flange plate is sequentially provided with a polygonal through hole and an internal thread through hole along the length direction of the U-shaped support;

the number of the top pulling assemblies is two, and the top pulling assemblies are respectively arranged at two end parts of the U-shaped support in the length direction; each group of top pulling components consists of three top pulling devices which are uniformly surrounded on the outer surface of the U-shaped support; the top puller consists of an outer cylinder, a top pull rod, a top pull bolt, a rod restraint rope and a ball restraint rope, wherein the length direction of the outer cylinder is consistent with that of the U-shaped support, the outer cylinder is fixedly connected to the outer surface of the U-shaped support, one end of the outer cylinder close to the outer side of the outer cylinder is provided with an opening, the other end of the outer cylinder close to the outer side of the outer cylinder is fixedly connected with an end plate, and the center of the end plate is provided with a threaded through hole; the top pull rod is inserted into the outer barrel in a sliding mode, a concave circular hole is correspondingly formed in the center of one end, close to the threaded through hole, of the top pull rod, a concave platform is coaxially formed in the tail end of the concave circular hole, the other end of the top pull rod extends to the outside through the opening end of the outer barrel, and a constraint hole is formed in the end portion of the top pull rod; the top pull bolt is installed in the threaded through hole in a threaded fit mode, one end, close to the outer side, of the top pull bolt extends into the concave table through the concave table round hole, and a boss is fixedly connected in the concave table; the outer diameter of the boss is larger than the inner diameter of the circular hole of the concave platform and is rotatably matched with the concave platform; the boss is made of a nut and is fixedly connected to the end part of the top pull bolt through thread matching; the rod restraint ropes penetrate through the restraint holes of the three top pull rods on the same side and then are connected in a closed manner from the head ends to the tail ends; the ball constraint rope is connected to constraint holes of the three top pull rods on the same side and is connected with a bolt ball on the outer side of the original rod piece to be replaced in the original mechanism;

the lifting assemblies are two groups and are respectively arranged above the two pairs of flange plates; each group of lifting components consists of a lifting screw, a lifting nut and a lifting belt; the number of the lifting screws is two, and the lifting screws are respectively arranged corresponding to the two polygonal through holes on each pair of flange plates; the lifting screw consists of a screw section and a prism section, the prism section is fixedly inserted in the polygonal through hole, and the screw section is positioned on the outer side of the U-shaped support; the number of the lifting nuts is two, and the lifting nuts are respectively sleeved outside the screw sections on the two lifting screws in a threaded fit manner; the lifting belt consists of a U-shaped supporting plate and two folded plates which are oppositely and fixedly connected to the outer side of the opening end of the U-shaped supporting plate, the size of the U-shaped supporting plate is matched with that of the U-shaped accommodating groove, the U-shaped supporting plate is arranged in the U-shaped accommodating groove, two lifting belt holes are formed in the two folded plates at positions corresponding to the two lifting screws, the two lifting belt holes are sleeved outside the two lifting screws respectively and are lapped at the top ends of the two lifting nuts;

the number of the positioning assemblies is two, and the positioning assemblies are respectively arranged above the two pairs of flange plates; the positioning assembly consists of positioning auxiliary plates, auxiliary plate fixing bolts, positioning screw holes and positioning bolts, the length of each positioning auxiliary plate is matched with the size of the opening end of the U-shaped support, two auxiliary plate through holes are formed in the positions, corresponding to the two internal thread through holes in each pair of flange plates, of the two end portions of each positioning auxiliary plate, and the auxiliary plate screw holes are formed in the middle of each positioning auxiliary plate; the two auxiliary plate fixing bolts are respectively arranged corresponding to the two auxiliary plate through holes and inserted into the internal thread through hole in a thread fit manner after penetrating through the auxiliary plate through holes; the number of the positioning screw holes is two, the two positioning screw holes are formed in the U-shaped support and are respectively positioned between two adjacent jacking components and are circumferentially and uniformly distributed with the auxiliary plate screw holes; the number of the positioning bolts is three, one positioning bolt is inserted into the auxiliary plate screw hole in a threaded fit mode, and the other two positioning bolts are respectively inserted into the two positioning screw holes in a threaded fit mode.

Preferably, the strain monitoring mechanism comprises a strain gauge, a strain signal emitter and a display, the strain gauge is adhered to the surfaces of other rod pieces connected to the bolt balls on the outer sides of the two ends of the original rod piece to be replaced by structural glue and is connected with the strain signal emitter through a lead, and the strain signal emitter is connected with the display in a wireless communication mode.

Further, in order to guarantee bearing capacity and service life, the rod restraint rope and the ball restraint rope are both steel wire ropes.

Further, in order to ensure the bearing capacity of the stay bar and enable the stay bar to be repeatedly used, the outer cylinder is made of a square steel pipe, and the top pull rod is a solid rod body with a square cross section.

Further, in order to ensure the bearing capacity of the stay bar and enable the stay bar to be repeatedly used, the outer cylinder is made of a round steel pipe, and the top pull rod is a solid round rod body.

Further, in order to accurately monitor the strain condition of the rod pieces, the number of the strain monitoring mechanisms is at least 4, and at least 2 other rod pieces on the bolt ball at the outer side of each end of the original rod piece to be replaced are connected with the strain monitoring mechanisms.

In the utility model, the U-shaped support is provided with the U-shaped containing groove, so that the original rod piece to be replaced can be sleeved into the U-shaped support by the U-shaped containing groove in the replacement process, and the subsequent replacement operation can be conveniently carried out; a pair of flange plates are fixedly connected to two end parts of the U-shaped support respectively, and a polygonal through hole and an internal thread through hole are formed in the flange plates, so that the lifting assembly and the positioning assembly can be assembled conveniently; the two ends of the U-shaped support in the length direction are respectively connected with one jacking component, each jacking component consists of three jacking devices, and the jacking devices can realize the jacking function of the bolt ball; the top puller is fixedly connected with the surface of the U-shaped support through the outer cylinder, a top pull bolt is connected in an end plate of the outer cylinder through threads, a top pull rod is inserted in the outer cylinder in a sliding mode, meanwhile, the top pull bolt is rotationally connected with the top pull rod, the top pull bolt can be adjusted to drive the top pull rod to move transversely, then, the end portion of the top pull rod can be conveniently used for carrying out jacking operation on a bolt ball, meanwhile, a constraint hole in the end portion of the top pull rod can be used for being connected with a ball constraint rope wound on the surface of the bolt ball, and therefore the bolt ball can be conveniently pulled; the lifting belt consists of a U-shaped supporting plate and two folded plates, so that the U-shaped supporting plate can be placed in the U-shaped accommodating groove, and an original rod piece to be replaced can be supported; two folded plates are respectively lapped on the two flange plates on one side, so that the prism section of the lifting screw is fixedly inserted into the polygon through hole in the flange plates, the folded plates are sleeved outside the screw section of the lifting screw through lifting holes on the folded plates, the lifting belt can be lifted through lifting nuts positioned below the folded plates, and the original rod piece to be replaced can be gradually driven to the outside of the U-shaped accommodating groove; meanwhile, in the process of loading a new rod piece, the initial bearing can be carried out through a U-shaped supporting plate in the lifting assembly; like this, through the setting of lifting unit, can not only make things convenient for originally treating the removal of replacement member, can also make the installation of new member more convenient. Utilize to assist board fixing bolt to assist the board through the location and assist two flange board fixed connection with one side, can wait to replace member or new member to the inside primitive of lifting strap and carry on spacingly, and then can make the primitive to wait to replace member or new member keep inside the device that supports rack member replacement to can be convenient carry on member installation and demolish the location of in-process, the removal of the original member of waiting to replace and the process of packing into of new member. The device can position the rod in the U-shaped support through the matching of the lifting assembly and the positioning assembly, and can position the device near the original rod to be replaced through the transverse movement of the jacking bolt and the jacking rod in the jacking assembly, so that all manual operations can be concentrated near the bolt ball position, and the device is more suitable for aerial work; simultaneously, because the lifting process of lifting unit and the top of top pulling unit all can adopt the spanner to operate, very big improvement the convenience of construction, can effectively improve the replacement efficiency of member. The device commonality is strong, both can be used to the replacement of existing spatial grid structure member, also can be used to the replacement of newly-built spatial grid member, both can be used to the replacement of the straight member of rack, also can be used to the replacement of crooked member, both can be used to the replacement of the impaired member in rack use stage, also can be used to the replacement of the crooked member in rack construction stage, both can be used to the replacement of compressed member, also can be used to the replacement of compressed member.

Drawings

Fig. 1 is a perspective view of a device for supporting rack bar replacement in the present invention;

fig. 2 is a first schematic plan view of the present invention;

fig. 3 is a second schematic plan view of the present invention;

FIG. 4 is a schematic structural view of a U-shaped support according to the present invention;

FIG. 5 is a schematic cross-sectional view of FIG. 4;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 8 is a schematic structural view of the middle puller of the present invention;

fig. 9 is a longitudinal sectional view of the middle puller according to the present invention;

FIG. 10 is a cross-sectional view of FIG. 9 with the jack bolt removed;

fig. 11 is a perspective view of a lifting assembly of the present invention;

fig. 12 is a front view of the lifting assembly of the present invention;

fig. 13 is a schematic structural view of a middle positioning auxiliary plate of the present invention;

FIG. 14 is a first alternative view of the present invention applied to a compression bar;

FIG. 15 is a second alternative diagram of the present invention applied to a compression bar member;

fig. 16 is a first alternative schematic view of the invention applied to a tension member;

fig. 17 is a second alternative schematic view of the tension member according to the present invention.

In the figure: 1. the U-shaped supporting device comprises a U-shaped support 11, a U-shaped containing groove 12, a flange plate 13, an internal thread through hole 14, a polygonal through hole 15, an opening circular steel tube 16 and a strip-shaped steel plate;

2. the device comprises a top pull assembly 21, an outer cylinder 211, an end plate 22, a top pull rod 23, a top pull bolt 231, a boss 24, a constraint hole 25, a ball constraint rope 26, a rod constraint rope 27, a threaded through hole 28, a concave circular hole 29 and a concave;

3. the positioning assembly comprises a positioning component 31, positioning screw holes 32, positioning bolts 33, positioning auxiliary plates 34, auxiliary plate screw holes 35, auxiliary plate through holes 36 and auxiliary plate fixing bolts;

4. a lifting component 41, a lifting belt 42, a lifting belt hole 43, a lifting nut 44, a lifting screw 441, a screw section 442, a prism section 45, a folded plate 46 and a U-shaped supporting plate;

5. a strain monitoring mechanism 51, a strain gauge 52 and a strain signal emitter;

6. original structure, 61, bolt ball, 62, original rod to be replaced, 63, other rod, 64, non-threaded sleeve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 17, the utility model provides a device for replacing the rods of a support net rack, which comprises a U-shaped support 1, a top pull component 2, a lifting component 4, a positioning component 3 and a strain monitoring mechanism 5;

the U-shaped support 1 is composed of an opening round steel pipe 15 and a pair of strip-shaped steel plates 16, the opening of the opening round steel pipe 15 is located at the top, the width of the opening is smaller than the diameter of the opening, the strip-shaped steel plates 16 are vertically arranged and extend along the length direction of two ends of the opening round steel pipe 15 and are correspondingly welded to the two end edges of the opening, the U-shaped support 1 is internally provided with a U-shaped accommodating groove 11 which runs through the length direction, two end parts of the length direction are fixedly connected with a pair of flange plates 12 respectively, and each pair of flange plates 12 are fixedly connected to the outer sides of the front end edge and the rear end edge of the opening end of the U-shaped support 1 oppositely; the size of the U-shaped accommodating groove 11 is matched with the size of the original rod piece 62 to be replaced; the flange plate 12 is sequentially provided with a polygonal through hole 14 and an internal thread through hole 13 along the length direction of the U-shaped support 1;

the number of the top pulling assemblies 2 is two, and the top pulling assemblies are respectively arranged at two end parts of the U-shaped support 1 in the length direction; each group of top pull components 2 consists of three top pull devices which are uniformly surrounded on the outer surface of the U-shaped support 1; the top puller comprises an outer cylinder 21, a top pull rod 22, a top pull bolt 23, a rod restraint rope 26 and a ball restraint rope 25, wherein the length direction of the outer cylinder 21 is consistent with that of the U-shaped support 1, the outer cylinder is fixedly connected to the outer surface of the U-shaped support 1, one end of the outer cylinder close to the outer side is open, the other end of the outer cylinder is fixedly connected with an end plate 211, and the center of the end plate 211 is provided with a threaded through hole 27; the top pull rod 22 is inserted into the outer cylinder 21 in a sliding manner, a concave round hole 28 is correspondingly formed in the center of one end close to the threaded through hole 27, a concave 29 is coaxially formed at the tail end of the concave round hole 28, the other end of the top pull rod extends to the outside through the opening end of the outer cylinder 21, and a constraint hole 24 is formed in the end part of the top pull rod; the top pull bolt 23 is installed in the threaded through hole 27 through thread fit, and one end of the top pull bolt close to the outer side extends into the concave platform 29 through the concave platform round hole 28, and a convex platform 231 is fixedly connected in the concave platform 29; the outer diameter of the boss 231 is larger than the inner diameter of the boss circular hole 28, and the boss is rotatably matched with the boss 29; the boss 231 is made of a nut and is fixedly connected to the end of the jack bolt 23 by screw-fitting; the rod restraint ropes 26 penetrate through the restraint holes 24 of the three top pull rods 22 on the same side and are connected in a closed mode from the head end to the tail end; the ball restraint ropes 25 are connected to the restraint holes 24 of the three top pull rods 22 on the same side and connected with the bolt balls 61 on the outer side of the original rod piece 62 to be replaced in the original mechanism 6;

the number of the lifting assemblies 4 is two, and the lifting assemblies are respectively arranged above the two pairs of flange plates 12; each set of lifting assemblies 4 consists of a lifting screw 44, a lifting nut 43 and a lifting belt 41; the number of the lifting screws 44 is two, and the lifting screws are respectively arranged corresponding to the two polygonal through holes 14 on each pair of flange plates 12; the lifting screw 44 consists of a screw section 441 and a prism section 442, the prism section 442 is fixedly inserted into the polygonal through hole 14, and the screw section 441 is positioned at the outer side of the U-shaped support 1; the number of the lifting nuts 43 is two, and the lifting nuts are respectively sleeved outside the screw sections 441 on the two lifting screws 44 through thread matching; the lifting belt 41 consists of a U-shaped supporting plate 46 and two opposite folded plates 45 fixedly connected to the outer side of the opening end of the U-shaped supporting plate 46, the size of the U-shaped supporting plate 46 is matched with that of the U-shaped accommodating groove 11 and is arranged in the U-shaped accommodating groove 11, two lifting belt holes 42 are formed in the two folded plates 45 at positions corresponding to the two lifting screw rods 44, the two lifting belt holes 42 are respectively sleeved outside the two lifting screw rods 44 and are overlapped at the top ends of the two lifting nuts 43;

the number of the positioning assemblies 3 is two, the positioning assemblies are respectively arranged above the two pairs of flange plates 12 and are respectively positioned at the inner sides of the two lifting groups 4; the positioning assembly 3 consists of a positioning auxiliary plate 33, auxiliary plate fixing bolts 36, positioning screw holes 31 and positioning bolts 32, wherein the length of the positioning auxiliary plate 33 is matched with the size of the opening end of the U-shaped support 1, two auxiliary plate through holes 35 are formed in the two end parts of the positioning auxiliary plate at positions corresponding to the two internal thread through holes 13 on each pair of flange plates 12, and an auxiliary plate screw hole 34 is formed in the middle part of the positioning auxiliary plate; the two auxiliary plate fixing bolts 36 are respectively arranged corresponding to the two auxiliary plate through holes 35 and inserted into the internal thread through hole 13 through thread fit after penetrating through the auxiliary plate through holes 35; the number of the positioning screw holes 31 is two, and the two positioning screw holes 31 are both formed in the U-shaped support 1, are respectively positioned between two adjacent jacking components 2 and are circumferentially and uniformly distributed with the auxiliary plate screw holes 34; the number of the positioning bolts 32 is three, one positioning bolt 32 is inserted into the auxiliary plate screw hole 34 through thread fit, and the other two positioning bolts 32 are respectively inserted into the two positioning screw holes 31 through thread fit.

Preferably, the strain monitoring mechanism 5 comprises a strain gauge 51, a strain signal emitter 52 and a display, wherein the strain gauge 51 is adhered to the surface of another rod member 63 connected to the bolt ball 61 on the outer side of the two ends of the original rod member 62 to be replaced by structural adhesive, and is connected with the strain signal emitter 52 through a lead, and the strain signal emitter 52 is connected with the display in a wireless communication manner.

In order to ensure the bearing capacity and the service life, the rod restraint rope 26 and the ball restraint rope 25 are both steel wire ropes.

In order to ensure the bearing capacity of the stay bar and simultaneously enable the stay bar to be repeatedly used, the outer cylinder 21 is made of square steel pipes, and the top pull rod 22 is a solid rod body with a square cross section.

In order to ensure the bearing capacity of the stay bar and simultaneously enable the stay bar to be repeatedly used, the outer cylinder 21 is made of a round steel pipe, and the top pull rod 22 is a solid round rod body.

In order to accurately monitor the strain condition of the rod, the number of the strain monitoring mechanisms 5 is at least 4, and at least 2 other rod members 63 on the bolt ball 61 at the outer side of each end of the original rod member 62 to be replaced are connected with the strain monitoring mechanisms 5.

The utility model discloses a use is shown as fig. 14 to 17:

the method comprises the following steps: assembling a device for supporting the replacement of the net rack rod pieces;

s11, selecting a U-shaped support 1 with a proper length according to the minimum clear distance of the bolt balls 61 at the two ends of the original rod piece 62 to be replaced;

s12, inserting matched top pull rods 22 and top pull bolts 23 into the three outer cylinders 21 on the same side of the two ends of the U-shaped support 1 respectively, establishing connection between the top pull bolts 23 and the top pull rods 22, and assembling to form a top pull assembly 2; preferably, the top pull rod 22 is a straight rod;

s13, installing a lifting assembly 4 on each pair of flange plates 12; firstly, respectively inserting the prism sections 442 of the two lifting screws 44 into the two polygonal through holes 14 on each pair of flange plates 12, respectively sleeving the two lifting nuts 43 outside the screw sections 441 in the two lifting screws 44, respectively sleeving the two lifting belt holes 42 outside the screw sections 441 on the two lifting screws 44, and placing the U-shaped supporting plate 46 in the lifting belt 41 in the U-shaped accommodating groove 11 in the U-shaped support 1;

s14: the two positioning assemblies 3 are respectively arranged on the two pairs of flange plates 12, and the positioning auxiliary plates 33 are fixedly connected to the pair of flange plates 12 by using two auxiliary plate fixing bolts 36;

s15: installing strain gauges 51 and strain signal transmitters 52 on the surfaces of other rod pieces 63 connected with bolt balls 61 at two ends of an original rod piece 62 to be replaced; preferably, the strain gauge 51 is adhered to the surface of the other lever 63 by using a structural adhesive. The strain signal transmitter 52 has a magnetic adhesive strip on the back for easy installation.

Step two: the device for supporting the replacement of the net rack rod piece is in place;

s21: firstly, placing the assembled device for replacing the support net rack rod piece at a position close to the original rod piece 62 to be replaced, loosening the two auxiliary plate fixing bolts 36 and taking down the positioning auxiliary plates 33 on the two pairs of flange plates 12, ensuring that the device for replacing the support net rack rod piece is positioned between the two bolt balls 61 at the two ends of the original rod piece 62 to be replaced, then sleeving the original rod piece 62 to be replaced into the U-shaped accommodating groove 11 and falling into the U-shaped supporting plate 46 on the lifting belt 41;

s22: establishing connection between the two top pulling assemblies 2 and two bolt balls 61 at two ends of an original rod piece to be replaced 62 to be replaced through two groups of ball constraint ropes 25; firstly, the ball restraining rope 25 passes through the restraining hole 24 on the top pull rod 22, then bypasses the bolt ball 61 from the surface of the bolt ball 61 and returns to the restraining hole 24 on the top pull rod 22, and the bolt ball 61 is connected with the three top pull rods 22 in the top pull assembly 2 through the ball restraining rope 25;

in order to ensure the synchronous action of the three top pull rods in the same group of top pull assemblies, two rod restraint ropes 26 respectively penetrate through the restraint holes 24 on the top pull rods 22 in the two top pull assemblies 2, so that each rod restraint rope 26 integrally connects a plurality of top pull rods 22 in one group;

step three: positioning a device for supporting rack rod replacement;

the positioning components 3 are respectively arranged on the two pairs of flange plates 12; the auxiliary positioning plates 33 are arranged on each pair of flange plates 12 through the auxiliary plate fixing bolts 36, then the three positioning bolts 32 are screwed, so that the three positioning bolts 32 are circumferentially abutted against the original rod piece 62 to be replaced, the center of the cross section of the two ends of the original rod piece 62 to be replaced is ensured to be superposed with the center of the cross section of the U-shaped support 1, and the positioning connection of the device for replacing the support net rack rod piece and the original structure 6 is completed;

step four: rod replacement;

s41: carrying out top pulling;

the plurality of top pull bolts 23 on the two sides are rotated by a spanner, the top pull rod 22 is driven to move outwards by the top pull bolts 23, the two bolt balls 61 are pulled close by the two groups of ball constraint ropes 25 or the two bolt balls 61 are pushed far to a required distance by the end parts of the plurality of top pull rods 22; then, the non-threaded sleeves 64 at the two ends of the original rod piece 62 to be replaced are screwed to loosen the original rod piece 62 to be replaced;

specifically, if the original rod member 62 to be replaced is a pulled rod member, the top pull bolts 23 in the two top pull assemblies 2 are rotated to drive the top pull rods 22 to move, so that the ball constraint rope 25 is tightened to generate a pulling force on the top pull bolts 23, and the pulling force on the two bolt balls 61 is achieved until the two bolt balls 61 are pulled close to a required distance;

if the original rod piece 62 to be replaced is a pressed rod piece, the two bolt balls 61 at the two ends of the original rod piece 62 to be replaced are jacked through the two jacking and pulling assemblies 2; rotating the top pull bolts 23 at both sides to move the end portions of the top pull rods 22 at both sides outward until the end portions of the top pull rods 22 at both sides push the two bolt balls 61 to a required distance;

s42: taking out the original rod;

firstly, unscrewing a plurality of auxiliary plate fixing bolts 36 on the two positioning auxiliary plates 33, and taking down the two positioning auxiliary plates 33 and the positioning bolts 32 on the two positioning auxiliary plates 33; then, sequentially screwing a plurality of lifting nuts 43 by using a wrench, jacking the folded plate 45 in a direction away from the U-shaped support 1 by moving the lifting nuts 43, and taking out the original rod piece 62 to be replaced when the original rod piece 62 to be replaced is jacked out from the opening of the U-shaped accommodating groove 11;

s43: installing a new rod;

s431: firstly, a plurality of lifting nuts 43 are screwed in sequence by using a spanner to rotate to the end face of the flange plate 12, and then the U-shaped supporting plate 46 in the lifting belt 41 is placed into the U-shaped accommodating groove 11;

s432: firstly, a new rod piece is put into the U-shaped containing groove 11, and then the two pairs of flange plates 12 at the two ends of the U-shaped support 1 are respectively provided with a positioning auxiliary plate 33;

s433: firstly, aligning the high-strength bolt at the end part of the new rod piece with the screw hole of the bolt ball 61 by finely adjusting the plurality of positioning bolts 32, and then screwing the non-thread sleeve 64 to screw the high-strength bolt into the bolt ball 61 to generate jacking force or pulling force on the bolt ball 61 until the high-strength bolt is completely screwed into the bolt ball 61; in the process, the jacking bolt 23 is synchronously rotated in sections to release jacking force or pulling force on the bolt ball 61;

in order to ensure the stability and reliability of the grid structure after replacement, the allowable strain value delta epsilon of other rod pieces 63 on the bolt balls 61 at the two ends of the original rod piece 62 to be replaced is calculated in advance; in the rod replacing process, the strain values of other rods 63 are monitored in the whole process, and the strain values of the other rods 63 are ensured not to exceed +/-Delta epsilon, so that the stress of the other rods 63 which are not replaced is ensured to be maintained in a preset range, and the safety coefficient of the net rack in the replacing process and after replacement is ensured.

Step five: device recovery

Firstly screwing a plurality of top pull bolts 23 at two sides to ensure that a plurality of top pull rods 22 at two sides are completely separated from the bolt ball 61, and loosening the ball restraint ropes 25 and the rod restraint ropes 26 to ensure that a device for replacing the supporting net rack rod piece does not generate top pull action on the bolt ball 61 any more; then, the auxiliary plate fixing bolts 36 on the positioning auxiliary plates 33 on both sides are twisted, and the two positioning auxiliary plates 33 are taken down, so that the device for replacing the rod pieces of the support net rack is separated from the new rod pieces, and the device is disassembled and recovered.

In the utility model, the U-shaped support is provided with the U-shaped containing groove, so that the original rod piece to be replaced can be sleeved into the U-shaped support by the U-shaped containing groove in the replacement process, and the subsequent replacement operation can be conveniently carried out; a pair of flange plates are fixedly connected to two end parts of the U-shaped support respectively, and a polygonal through hole and an internal thread through hole are formed in the flange plates, so that the lifting assembly and the positioning assembly can be assembled conveniently; the two ends of the U-shaped support in the length direction are respectively connected with one jacking component, each jacking component consists of three jacking devices, and the jacking devices can realize the jacking function of the bolt ball; the top puller is fixedly connected with the surface of the U-shaped support through the outer cylinder, a top pull bolt is connected in an end plate of the outer cylinder through threads, a top pull rod is inserted in the outer cylinder in a sliding mode, meanwhile, the top pull bolt is rotationally connected with the top pull rod, the top pull bolt can be adjusted to drive the top pull rod to move transversely, then, the end portion of the top pull rod can be conveniently used for carrying out jacking operation on a bolt ball, meanwhile, a constraint hole in the end portion of the top pull rod can be used for being connected with a ball constraint rope wound on the surface of the bolt ball, and therefore the bolt ball can be conveniently pulled; the lifting belt consists of a U-shaped supporting plate and two folded plates, so that the U-shaped supporting plate can be placed in the U-shaped accommodating groove, and an original rod piece to be replaced can be supported; two folded plates are respectively lapped on the two flange plates on one side, so that the prism section of the lifting screw is fixedly inserted into the polygon through hole in the flange plates, the folded plates are sleeved outside the screw section of the lifting screw through lifting holes on the folded plates, the lifting belt can be lifted through lifting nuts positioned below the folded plates, and the original rod piece to be replaced can be gradually driven to the outside of the U-shaped accommodating groove; meanwhile, in the process of loading a new rod piece, the initial bearing can be carried out through a U-shaped supporting plate in the lifting assembly; like this, through the setting of lifting unit, can not only make things convenient for originally treating the removal of replacement member, can also make the installation of new member more convenient. Utilize to assist board fixing bolt to assist the board through the location and assist two flange board fixed connection with one side, can wait to replace member or new member to the inside primitive of lifting strap and carry on spacingly, and then can make the primitive to wait to replace member or new member keep inside the device that supports rack member replacement to can be convenient carry on member installation and demolish the location of in-process, the removal of the original member of waiting to replace and the process of packing into of new member. The device can position the rod in the U-shaped support through the matching of the lifting assembly and the positioning assembly, and can position the device near the original rod to be replaced through the transverse movement of the jacking bolt and the jacking rod in the jacking assembly, so that all manual operations can be concentrated near the bolt ball position, and the device is more suitable for aerial work; simultaneously, because the lifting process of lifting unit and the top of top pulling unit all can adopt the spanner to operate, very big improvement the convenience of construction, can effectively improve the replacement efficiency of member. The device commonality is strong, both can be used to the replacement of existing spatial grid structure member, also can be used to the replacement of newly-built spatial grid member, both can be used to the replacement of the straight member of rack, also can be used to the replacement of crooked member, both can be used to the rack and use the replacement of the impaired member in stage, also can be used to the replacement of the crooked member in rack construction stage, both can be used to receive the replacement of member, also can be used to receive the replacement of pull rod spare.

Claims (5)

1. A device for replacing a rod of a support net rack comprises a U-shaped support (1), and is characterized by further comprising a jacking assembly (2), a lifting assembly (4), a positioning assembly (3) and a strain monitoring mechanism (5);

the U-shaped support (1) is composed of an opening round steel pipe (15) and a pair of strip-shaped steel plates (16), the opening of the opening round steel pipe (15) is located at the top, the width of the opening is smaller than the diameter of the opening, the strip-shaped steel plates (16) are arranged vertically, the strip-shaped steel plates extend along the length direction of two ends of the opening round steel pipe (15), the strip-shaped steel plates are welded on two end edges of the opening correspondingly, a U-shaped accommodating groove (11) penetrating through the length direction is formed in the U-shaped support (1), a pair of flange plates (12) are fixedly connected to the two end portions of the length direction respectively, and each pair of flange plates (12) are fixedly connected to the outer sides of the front end edge and the rear end edge of the opening end of the U-shaped support (1) correspondingly; the size of the U-shaped accommodating groove (11) is matched with that of the original rod piece (62) to be replaced; the flange plate (12) is sequentially provided with a polygonal through hole (14) and an internal thread through hole (13) along the length direction of the U-shaped support (1);

the number of the top pulling assemblies (2) is two, and the top pulling assemblies are respectively arranged at two end parts of the U-shaped support (1) in the length direction; each group of top pulling components (2) consists of three top pulling devices which are uniformly surrounded on the outer surface of the U-shaped support (1); the top puller comprises an outer cylinder (21), a top pull rod (22), a top pull bolt (23), a rod restraint rope (26) and a ball restraint rope (25), wherein the length direction of the outer cylinder (21) is consistent with that of the U-shaped support (1), the outer cylinder is fixedly connected to the outer surface of the U-shaped support (1), one end of the outer cylinder close to the outer side of the outer cylinder is open, the other end of the outer cylinder is fixedly connected with an end plate (211), and the center of the end plate (211) is provided with a threaded through hole (27); the top pull rod (22) is inserted into the outer barrel (21) in a sliding manner, a concave round hole (28) is correspondingly formed in the center of one end, close to the threaded through hole (27), of the top pull rod, a concave platform (29) is coaxially formed at the tail end of the concave round hole (28), the other end of the top pull rod extends to the outside through the opening end of the outer barrel (21), and a constraint hole (24) is formed in the end part of the top pull rod; the top pull bolt (23) is installed in the threaded through hole (27) in a threaded fit mode, one end, close to the outer side, of the top pull bolt extends into the concave table (29) through the concave table round hole (28), and a boss (231) is fixedly connected into the concave table (29); the outer diameter of the boss (231) is larger than the inner diameter of the circular hole (28) of the concave platform, and the boss is rotatably matched with the concave platform (29); the lug boss (231) is made of a nut and is fixedly connected to the end part of the top pull bolt (23) through thread matching; the rod restraint ropes (26) penetrate through restraint holes (24) of the three top pull rods (22) on the same side and are connected in a closed mode from head to tail; the ball restraint ropes (25) are connected to restraint holes (24) of the three top pull rods (22) on the same side and connected with bolt balls (61) on the outer side of an original rod piece (62) to be replaced in the original mechanism (6);

the number of the lifting assemblies (4) is two, and the lifting assemblies are respectively arranged above the two pairs of flange plates (12); each group of lifting components (4) consists of a lifting screw rod (44), a lifting nut (43) and a lifting belt (41); the number of the lifting screws (44) is two, and the lifting screws are arranged corresponding to the two polygonal through holes (14) on each pair of flange plates (12) respectively; the lifting screw (44) consists of a screw section (441) and a prism section (442), the prism section (442) is fixedly inserted in the polygonal through hole (14), and the screw section (441) is positioned on the outer side of the U-shaped support (1); the number of the lifting nuts (43) is two, and the lifting nuts are respectively sleeved outside the screw sections (441) on the two lifting screws (44) through thread matching; the lifting belt (41) consists of a U-shaped supporting plate (46) and two opposite folded plates (45) fixedly connected to the outer side of the opening end of the U-shaped supporting plate (46), the size of the U-shaped supporting plate (46) is matched with that of the U-shaped accommodating groove (11) and is arranged in the U-shaped accommodating groove (11), two lifting belt holes (42) are formed in the two folded plates (45) at positions corresponding to the two lifting screw rods (44), the two lifting belt holes (42) are respectively sleeved outside the two lifting screw rods (44) and are overlapped at the top ends of the two lifting nuts (43);

the number of the positioning assemblies (3) is two, and the positioning assemblies are respectively arranged above the two pairs of flange plates (12); the positioning assembly (3) consists of an auxiliary positioning plate (33), an auxiliary plate fixing bolt (36), a positioning screw hole (31) and a positioning bolt (32), the length of the auxiliary positioning plate (33) is matched with the size of the opening end of the U-shaped support (1), two auxiliary plate through holes (35) are formed in the positions, corresponding to the two internal thread through holes (13) on each pair of flange plates (12), of the two end parts of the auxiliary positioning plate, and an auxiliary plate screw hole (34) is formed in the middle of the auxiliary positioning plate; the two auxiliary plate fixing bolts (36) are respectively arranged corresponding to the two auxiliary plate through holes (35) and inserted into the internal thread through hole (13) through thread fit after penetrating through the auxiliary plate through holes (35); the number of the positioning screw holes (31) is two, and the two positioning screw holes (31) are formed in the U-shaped support (1), are respectively positioned between two adjacent top-pull assemblies (2), and are circumferentially and uniformly distributed with the auxiliary plate screw holes (34); the number of the positioning bolts (32) is three, one positioning bolt (32) is inserted into the auxiliary plate screw hole (34) through thread fit, and the other two positioning bolts (32) are respectively inserted into the two positioning screw holes (31) through thread fit;

the strain monitoring mechanism (5) is composed of a strain gauge (51), a strain signal emitter (52) and a display, the strain gauge (51) is adhered to the surfaces of other rod pieces (63) connected to bolt balls (61) on the outer sides of two ends of an original rod piece (62) to be replaced by structural adhesive and is connected with the strain signal emitter (52) through a lead, and the strain signal emitter (52) is connected with the display in a wireless communication mode.

2. A device for support grid bar replacement as claimed in claim 1 wherein the bar restraint ropes (26) and ball restraint ropes (25) are steel wire ropes.

3. A device for supporting grid rod replacement according to claim 1 or 2, characterized in that the outer cylinder (21) is made of square steel tube and the top pull rod (22) is a solid rod with a square cross section.

4. A device for supporting rack bar replacement as claimed in claim 3, wherein the outer cylinder (21) is made of round steel pipe and the top pull rod (22) is a solid round bar.

5. A device for supporting grid rod replacement according to claim 4, characterized in that the number of the strain monitoring mechanisms (5) is at least 4, and at least 2 other rods (63) on the bolt ball (61) outside each end of the original rod (62) to be replaced are connected with the strain monitoring mechanisms (5).

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