CN214090427U - Two-section type heat-preservation anchor bolt - Google Patents

Abstract

The utility model relates to the technical field of heat preservation anchor bolts, and discloses a two-section type heat preservation anchor bolt, which comprises an expansion sleeve and a screw positioned in the inner cavity of the expansion sleeve, wherein one end of the expansion sleeve is provided with a pressing cap, the expansion sleeve comprises a sleeve and an expansion pipe, the pressing cap is positioned at one end of the sleeve, the other end of the sleeve is detachably connected with the expansion pipe, the sleeve and the expansion pipe can select sleeves and expansion pipes with different lengths and sizes according to the thickness of an outer wall heat preservation layer for interchange matching, the fixing of the heat preservation layers with different thicknesses can be realized only by replacing sleeves or expansion pipes with different sizes, meanwhile, the lower end of the expansion pipe is provided with a plurality of expansion grooves, the expansion grooves are equidistantly distributed at intervals, the lower end of the expansion sleeve detachably connected with the expansion pipe is provided with a plurality of expansion grooves which are equidistantly arranged at intervals, so that the pipe wall of the expansion pipe is uniformly contacted with a wall body base hole after expanding along the expansion grooves, the fixing effect is better.

Description

Two-section type heat-preservation anchor bolt

Technical Field

The utility model relates to a heat preservation crab-bolt technical field, in particular to heat preservation crab-bolt of two segmentations.

Background

In the existing external thermal insulation system of an external wall, a thermal insulation board is fixed on a wall body through a thermal insulation anchor bolt in a common fixing method, during use, a hole is drilled firstly, an expansion sleeve is placed into the drilled hole, then the thermal insulation anchor bolt is driven in, and in order to increase the durability and the stability of the thermal insulation anchor bolt, a nail body of the thermal insulation anchor bolt is usually made of metal. However, a great deal of practice shows that the heat insulation performance of the wall body can be seriously reduced by using a great amount of heat insulation anchor bolts, so that the overall heat insulation effect of the outer wall is seriously influenced.

In addition, in the existing building, the heat preservation anchor bolt is divided into multiple specifications to be used respectively to meet the requirements of building construction due to different thicknesses of the heat preservation layer of the outer wall in the specific use process, and the heat preservation anchor bolt adopts the heat preservation anchor bolts with different specifications according to the heat preservation material requirements with different thicknesses in the anchoring process, so that great inconvenience is brought to the design, manufacture, transportation, purchase and installation work.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat preservation crab-bolt of two segmentations has fixed effect, easy dismounting, the effect that the commonality is strong.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a two segmentation's heat preservation crab-bolt, includes expansion sleeve and the screw that is located expansion sleeve inner chamber, expansion sleeve's one end is equipped with presses the cap, expansion sleeve includes sleeve pipe and expansion pipe, it is located sheathed tube one end to press the cap, the sheathed tube other end can be dismantled with the expansion pipe and be connected, the expansion pipe is the opening with bushing's one end, the other end of expansion pipe is equipped with sealed terminal surface, the lower extreme of expansion pipe is equipped with a plurality of expansion grooves, expansion groove equidistance interval distribution.

Through adopting above-mentioned technical scheme, the expansion sleeve comprises the sleeve pipe and the expansion pipe of dismantling the connection, and both can select different length dimension's sleeve pipe and expansion pipe to exchange the matching according to the outer wall insulation layer thickness, only need can realize the fixed of different thickness insulation layers with the sleeve pipe or the expansion pipe of trading different sizes.

During the use, fill in the basic hole that has made in advance after sleeve pipe and expansion pipe are connected, then insert its inner chamber with the screw from sheathed tube one end, the inner wall forward motion along the expansion pipe when the screw rotates, the most advanced of screw stretches out by the centre bore of the bottom terminal surface of expansion pipe gradually, along with the continuous screw in of screw, the bottom terminal surface of expansion pipe is being crept open by the most advanced of screw gradually, the screw continues the screw in, the bottom terminal surface of expansion pipe is along the screw thread upward movement of screw gradually, make the expansion pipe expand along the expansion groove, its outer wall closely laminates with wall body basic hole after the expansion pipe expands, form the friction auto-lock, thereby realize fixing, the equidistant interval in expansion groove sets up, make the expansion pipe wall expand back, with wall body basic hole even contact, fixed effect is better.

The utility model discloses a further set up to: the sleeve comprises a first sleeve and a second sleeve which are integrally formed, the inner diameter of the first sleeve is larger than the nut diameter of the screw, the inner diameter of the second sleeve is smaller than the nut diameter of the screw, and the inner diameter of the second sleeve is larger than the diameter of the screw body of the screw.

Through adopting above-mentioned technical scheme, the internal diameter of first sleeve pipe is greater than the nut diameter of screw, make the screw can get into first sheathed tube inner chamber by the tip of first sleeve pipe, the internal diameter of second sheathed tube is less than the nut diameter of screw, make the nail body of screw get into the inner chamber of second sheathed tube and the nut is located the bottom of first sheathed tube inner chamber, no longer along axial motion when guaranteeing that the screw continues to rotate, the bottom surface of expansion pipe is impaled to the screw bottom, make the bottom surface of expansion pipe move up along the screw, the expansion pipe begins to realize the anchorage along the expansion of expansion tank.

The utility model discloses a further set up to: the expansion pipe comprises a supporting part and an expansion part, the outer diameter of the expansion part is larger than that of the supporting part, the upper end of the supporting part is detachably connected with the second sleeve pipe, the lower end of the supporting part is integrally formed with the expansion part, and the expansion groove is upwards extended from the lower end of the expansion part.

Through adopting above-mentioned technical scheme, the external diameter that the external diameter of inflation portion is greater than the external diameter of support portion can increase the diameter after the inflation of inflation portion, makes the inflation pipe expand back along the inflation groove its outer wall and wall body base hole laminating inseparabler, and the anchor effect is better.

The utility model discloses a further set up to: the end of the second sleeve is provided with a matching part, and the end of the supporting part is provided with a connecting part connected with the matching part.

Through adopting above-mentioned technical scheme, the sleeve pipe passes through the cooperation portion with the expansion pipe to be connected with connecting portion, has realized being connected of sleeve pipe and expansion pipe.

The utility model discloses a further set up to: the outer wall of cooperation portion is equipped with two fixture blocks, the fixture block symmetry sets up, the inner wall of connecting portion be equipped with respectively with two fixture block complex axial spouts, the bottom of spout is equipped with the arc wall that extends along connecting portion inner wall circumferencial direction syntropy, the end of arc wall be equipped with fixture block complex lockhole.

Through adopting above-mentioned technical scheme, when cooperation portion and connecting portion are connected, the fixture block on the outer wall of cooperation portion slides to the bottom of spout along the spout on the connecting portion inner wall, then rotatory support makes the cooperation portion of the sheathed tube tip of second rotatory arc wall along the spout of the bottom of spout rotatory to the terminal back card go into the lockhole in, realize the joint, thereby realize the joint through spout and arc wall messenger fixture block realization circumferential motion and circumferential motion, operation process is simple, easy dismounting.

The utility model discloses a further set up to: the outer wall of the expansion pipe is provided with a conical inverted tooth, the cross section of the conical inverted tooth is triangular, the bottom of the conical inverted tooth is a tip, and one side face of the conical inverted tooth and the outer wall of the expansion pipe are integrally formed.

By adopting the technical scheme, the outer wall of the expansion pipe is provided with the tapered inverted teeth, so that the extrusion force between the expansion pipe and the inner wall of the base hole can be further enhanced, the expansion pipe is effectively prevented from falling back, meanwhile, the tapered inverted teeth can effectively prevent the expansion pipe from rotating along with the screw when the screw is screwed in, the bottom surface of the expansion pipe cannot move upwards along the screw to cause the expansion pipe cannot expand, the section of the tapered inverted teeth is set to be triangular, the triangular tips at the tops of the tapered inverted teeth are in contact with the wall surface of the wall base hole and are gradually embedded into the wall surface of the wall base hole under the action of extrusion force, further improves the connectivity between the expansion pipe and the inner wall of the base hole, further prevents the expansion pipe from rotating along with the screw when the screw is screwed in, in addition, the tapered inverted teeth also have the function of reinforcing ribs, so that the risk that the expansion pipe is broken due to deformation after expanding along the expansion groove can be avoided.

The utility model discloses a further set up to: and the upper end of the expansion tank is provided with a crack-stopping hole communicated with the expansion tank, and the diameter of the crack-stopping hole is greater than the width of the expansion tank.

Through adopting above-mentioned technical scheme, the inflation pipe is along the inflation back of inflation groove, and the tip of inflation groove receives great torsional force, through setting up the crack arrest hole in the upper end of inflation groove, utilizes the diameter to be greater than the circular inner wall in the crack arrest hole of the width of inflation groove can effectively decompose the torsional force that the inflation groove tip received to prevent that the inflation groove from tearing and causing the cracked risk of inflation pipe.

The utility model discloses a further set up to: the expansion groove is irregular and wavy.

Through adopting above-mentioned technical scheme, set the inflation groove to irregular wave, irregular wave's inflation groove can bear the torsional force of a plurality of directions, makes the expansion pipe more easily by the bloated, sets the inflation groove to irregular wave simultaneously, greatly increased the linear length of inflation groove, further makes the expansion pipe more easily by the bloated.

The utility model discloses a further set up to: the pressure cap and the expansion sleeve integrated into one piece, the pressure cap outwards extends along the diameter direction by the outer wall of expansion sleeve tip, the terminal surface of pressure cap is equipped with a plurality of holes that run through, the one end terminal surface of keeping away from the expansion sleeve of pressure cap is equipped with a plurality of archs.

Through adopting above-mentioned technical scheme, after the expansion sleeve got into wall body basic hole, press the cap to lean on the wall body with the terminal surface of expansion sleeve homonymy, realize the location, the construction is accomplished the bonding of both sides of pressing the cap through the concrete, be equipped with a plurality of holes that run through at the terminal surface of pressing the cap, it is sticky each other to enable to press cap both sides concrete, thereby improve and press cap and wall connection's fastness, the one end terminal surface of keeping away from the expansion sleeve at the pressure cap is equipped with a plurality of archs, further increase the area of contact of pressing the cap rather than the concrete that corresponds one side through setting up a plurality of archs, thereby further improve and press cap and wall connection's fastness.

The utility model discloses a further set up to: and a plug is further arranged at one end of the expansion sleeve provided with the pressing cap.

Through adopting above-mentioned technical scheme, the end cap is used for with expansion sleeve's end seal, makes the screw sealed at expansion sleeve intraductally, prevents that the screw from carrying out the heat exchange to the wall body both sides, and then influences the heat preservation effect, and sealed end cap can effectively prevent the concrete to get into expansion sleeve's inner chamber simultaneously, avoids the concrete to cause the corruption to the screw, has further strengthened the life of screw.

The utility model has the advantages that:

1. the utility model discloses well expansion sleeve comprises sleeve pipe and the expansion pipe that can dismantle the connection, both can select different length size's sleeve pipe and expansion pipe to exchange the matching according to the outer wall insulation layer thickness, only need can realize the fixed of different thickness heat preservation with sleeve pipe or expansion pipe of trading not unidimensional, and simultaneously, the expansion pipe lower extreme sets up the expansion tank that a plurality of equidistant intervals set up for the expansion pipe wall expands the back along the expansion tank, with wall body base hole even contact, fixed effect is better.

2. The utility model discloses well sleeve pipe passes through the cooperation portion with the expansion pipe and is connected with connecting portion, and when cooperation portion was connected with connecting portion, the fixture block on the outer wall of cooperation portion slided to the bottom of spout along the spout on the connecting portion inner wall, then rotatory supporting part makes the cooperation portion of supporting part tip rotatory to the terminal back card go into the lockhole, realizes the joint, thereby realizes circumferential motion and circumferential motion realization joint through spout and arc wall messenger fixture block, and operation process is simple, easy dismounting.

3. The utility model discloses the outer wall of well inflation pipe is equipped with the toper pawl, can further strengthen the extrusion force between inflation pipe and the basic hole inner wall, effectively prevent that the inflation pipe from returning to taking off, the toper pawl can also effectively prevent that the inflation pipe from rotating along with the screw when the screw from screwing in simultaneously, the bottom surface of avoiding the inflation pipe can't lead to the inflation pipe can't expand to open along screw upward movement, set up the cross-section of toper pawl into triangle-shaped, make the most advanced wall contact with wall basic hole of toper pawl top triangle-shaped and imbed gradually in the wall in wall basic hole under the effect of extrusion force, further improved connectivity between inflation pipe and the basic hole inner wall, the inflation pipe rotates along with the screw when further preventing the screw in, in addition, the toper pawl still has the effect of strengthening rib, can avoid the inflation pipe to expand to open the back along the inflation groove because of deformation and take place cracked risk.

4. The utility model discloses in be equipped with the one end of pressing the cap at expansion sleeve and set up the end cap, seal expansion sleeve's tip through the end cap, make the screw sealed at expansion sleeve intraductally, prevent that the screw from carrying out the heat exchange to the wall body both sides, effectively improved the heat preservation effect, during sealed end cap can effectively prevent the concrete entering expansion sleeve's inner chamber simultaneously, avoided the concrete to cause the corruption to the screw, further strengthened the life of screw.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 sectional view of a two-stage heat-insulating anchor bolt of the present invention.

Fig. 2 is a schematic three-dimensional structure view of a two-stage heat preservation anchor bolt of the present invention.

Fig. 3 is a schematic structural view of a two-segment type heat-insulating anchor bolt middle sleeve of the present invention.

Fig. 4 is a schematic structural view of the expansion pipe in the two-segment type heat preservation anchor bolt of the present invention.

Fig. 5 is a schematic structural view of a screw in a two-segment type heat preservation anchor bolt of the present invention.

Fig. 6 is a schematic structural view of a plug in a two-stage heat-insulating anchor bolt of the present invention.

In the figure, 1, the casing is expanded; 11. a sleeve; 111. a first sleeve; 112. a second sleeve; 1121. a fitting portion; 1122. a clamping block; 12. an expansion tube; 121. a support portion; 1211. a connecting portion; 1212. a chute; 1213. an arc-shaped slot; 1214. a lock hole; 122. an expansion part; 2. a screw; 3. pressing the cap; 4. an end face; 41. a central bore; 5. conical inverted teeth; 6. an expansion tank; 61. a crack stop hole; 62. a friction groove; 7. and (7) a plug.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a two-section type heat preservation anchor bolt comprises an expansion sleeve 1 and a screw 2 (fig. 5) located in an inner cavity of the expansion sleeve, wherein one end of the expansion sleeve 1 is provided with a pressing cap 3, the two-section type heat preservation anchor bolt is characterized in that the expansion sleeve 1 comprises a sleeve 11 and an expansion pipe 12, the pressing cap 3 is located at one end of the sleeve 11, the other end of the sleeve 11 is detachably connected with the expansion pipe 12, one end of the expansion pipe 12 connected with the sleeve 11 is an opening, the other end of the expansion pipe 12 is provided with a sealed end face 4, the lower end of the expansion pipe 12 is provided with a plurality of expansion grooves 6, the expansion grooves 6 are distributed at equal intervals, when in use, the sleeve 11 and the expansion pipe 12 are plugged into a pre-drilled base hole after being connected, the screw 2 is then inserted into the inner cavity of the sleeve 11 from one end, the screw 2 moves forward along the inner wall of the expansion pipe 12 when rotating, the tip of the screw 2 gradually drills through the bottom end face 4 of the expansion pipe 12, in order to improve the drilling speed of the tip of the screw 2 from the bottom section 4 and reduce the abrasion of the tip of the screw 2, a center hole 41 can be arranged at the center of the bottom end face 4, along with the continuous screwing of the screw 2, the bottom end face 4 of the expansion pipe 12 is gradually drilled by the tip of the screw 2, the screw 2 is continuously screwed in, the bottom end face 4 of the expansion pipe 12 gradually moves upwards along the thread of the screw 2, so that the expansion pipe 12 expands along the expansion groove 6, the outer wall of the expansion pipe 12 is tightly attached to the wall body base hole after the expansion pipe 12 expands to form friction self-locking, thereby realizing fixation, in order to increase the friction between the outer wall of the expansion pipe 12 and the wall body base hole, a plurality of friction grooves 62 can be arranged on the outer wall of the expansion pipe 12, the expansion grooves 6 are arranged at equal intervals, so that the pipe wall of the expansion pipe 12 is uniformly contacted with the wall body base hole after the expansion pipe 12 expands, the fixation effect is better, in addition, the expansion sleeve 1 is composed of a sleeve 11 and the expansion pipe 12 which are detachably connected, the two can select the sleeve pipe 11 and the expansion pipe 12 of different length sizes to carry out the interchange matching according to the outer wall insulation layer thickness, and the fixing of different thickness insulation layers can be realized only by replacing the sleeve pipe 11 or the expansion pipe 12 of different sizes.

Specifically, referring to fig. 3, the sleeve 11 includes a first sleeve 111 and a second sleeve 112 which are integrally formed, the inner diameter of the first sleeve 111 is larger than the nut diameter of the screw 2, so that the screw 2 can enter the inner cavity of the first sleeve 111 from the end of the first sleeve 111, the inner diameter of the second sleeve 112 is smaller than the nut diameter of the screw 2, the inner diameter of the second sleeve 112 is larger than the diameter of the shank of the screw 2, so that the shank of the screw 2 enters the inner cavity of the second sleeve 112 and the nut is located at the bottom of the inner cavity of the first sleeve 111, it is ensured that the screw 2 does not move axially when rotating continuously, the bottom of the screw 2 pierces the bottom surface of the expansion tube 12, so that the bottom surface of the expansion tube 12 moves upward along the screw, and the expansion tube 12 starts to expand along the expansion groove 6, thereby achieving anchoring.

Specifically, referring to fig. 4, the expansion pipe 12 includes a supporting portion 121 and an expansion portion 122, an outer diameter of the expansion portion 122 is greater than an outer diameter of the supporting portion 121, an upper end of the supporting portion 121 is detachably connected to the second casing pipe 112, a lower end of the supporting portion 121 is integrally formed with the expansion portion 122, the expansion groove 6 extends upward from a lower end of the expansion portion 122, and an outer diameter of the expansion portion 122 is greater than an outer diameter of the supporting portion 121, so that the expanded diameter of the expansion portion 122 can be increased, the outer wall of the expansion pipe 12 after being expanded along the expansion groove 6 is attached to the wall body base hole more tightly, and the anchoring effect is better.

Specifically, referring to fig. 1 to 4, an end of the second sleeve 112 is provided with a fitting portion 1121, an end of the support portion 121 is provided with a connecting portion 1211 connected to the fitting portion 1121, and the sleeve 11 and the expansion tube 12 are connected to the connecting portion 1211 through the fitting portion 1121, so that the sleeve 11 and the expansion tube 12 are connected in a threaded connection or a clamping connection, which is preferred to be a more convenient clamping connection.

Specifically, in the present embodiment, the outer wall of the engaging portion 1121 is provided with two latches 1122, the two blocks 1122 are symmetrically arranged, the inner wall of the connecting portion 1211 is provided with axial sliding grooves 1212 which are matched with the two blocks 1122, the bottom of the sliding groove 1212 is provided with an arc groove 1213 extending in the same direction along the circumferential direction of the inner wall of the connecting portion 1211, the end of the arc slot 1213 is provided with a lock hole 1214 engaged with the latch 1122, and when the engaging portion 1121 is connected to the connecting portion 1211, the latch 1122 on the outer wall of the fitting portion 1121 slides along the sliding groove 1212 on the inner wall of the connecting portion 1211 to the bottom of the sliding groove 1212, then the supporting part 121 is rotated to make the engaging part 1121 at the end of the second sleeve 112 rotate along the arc-shaped slot 1213 at the bottom of the sliding slot 1212 to the end and then snap into the locking hole 1214, so as to realize the snap-fit, the clamping connection is realized by the clamping block 1122 through circumferential movement and circumferential movement of the sliding groove 1212 and the arc-shaped groove 1213, the operation process is simple, and the disassembly and assembly are convenient.

Furthermore, the outer wall of the expansion pipe 12 is provided with the tapered inverted teeth 5, the tapered inverted teeth 5 can further enhance the extrusion force between the expansion pipe 12 and the inner wall of the base hole, so as to effectively prevent the expansion pipe 12 from falling off, and meanwhile, the tapered inverted teeth 5 can also effectively prevent the expansion pipe 12 from rotating along with the screw 2 when the screw 2 is screwed in, so as to avoid the situation that the expansion pipe 12 cannot expand due to the fact that the bottom surface 4 of the expansion pipe 12 cannot move upwards along the screw 2, the cross section of the tapered inverted teeth 5 is triangular, the bottom of the tapered inverted teeth 5 is pointed, one side surface of the tapered inverted teeth 5 is integrally formed with the outer wall of the expansion pipe 12, the cross section of the tapered inverted teeth 5 is triangular, so that the triangular pointed ends at the top of the tapered inverted teeth 5 are in contact with the wall surface of the base hole of the wall and are gradually embedded into the wall surface of the base hole of the wall under the action of the extrusion force, so as to further improve the connectivity between the expansion pipe 12 and the inner wall of the base hole, further prevent that expansion pipe 12 from rotating along with screw 2 when screw 2 from screwing in, in addition, toper pawl 5 still has the effect of strengthening rib, can avoid expansion pipe 12 to expand along expansion tank 6 and open the back because of the risk that the fracture takes place for deformation.

Furthermore, the upper end of the expansion groove 6 is provided with a crack-stopping hole 61 communicated with the expansion groove 6, the diameter of the crack-stopping hole 61 is larger than the width of the expansion groove 6, after the expansion pipe 12 expands along the expansion groove 6, the end part of the expansion groove 6 is subjected to larger torsional force, and by arranging the crack-stopping hole 61 at the upper end of the expansion groove 6, the crack-stopping hole 61 is smaller in torsional force due to the fact that the diameter of the crack-stopping hole 61 is larger than the width of the expansion groove 6, so that the crack-stopping hole 61 is difficult to tear, and in addition, the torsional force applied to the end part of the expansion groove 6 can be effectively decomposed by the circular inner wall of the crack-stopping hole 61, so that the risk that the expansion pipe 12 is cracked due to tearing of the expansion groove 6 is prevented.

Furthermore, the expansion groove 6 is irregular wave-shaped, the expansion groove 6 is arranged to be irregular wave-shaped, the irregular wave-shaped expansion groove 6 can bear torsional force in multiple directions, the expansion pipe 12 is expanded more easily, meanwhile, the expansion groove 6 is arranged to be irregular wave-shaped, the linear length of the expansion groove 6 is greatly increased, and the expansion pipe 12 is further expanded more easily.

Further, the pressure cap 3 is integrally formed with the expansion sleeve 1, the pressure cap 3 extends outwards from the outer wall of the end of the expansion sleeve 1 along the diameter direction, the end surface of the pressure cap 3 is provided with a plurality of through holes, the end surface of one end of the pressure cap 3 far away from the expansion sleeve 1 is provided with a plurality of bulges, after the expansion sleeve 1 enters the wall body base hole, the end surfaces of the pressing cap 3 and the expansion sleeve 1 at the same side are abutted against the wall body to realize positioning, the two sides of the pressing cap 3 are bonded by concrete after construction is finished, the end face of the pressing cap 3 is provided with a plurality of through holes, so that the concrete on the two sides of the pressing cap 3 can be adhered to each other, the firmness of the connection between the pressing cap 3 and the wall body is improved, the one end terminal surface of keeping away from expansion sleeve 1 at pressure cap 3 is equipped with a plurality of archs, further increases the area of contact of pressing cap 3 and 1 its concrete that corresponds one side through setting up a plurality of archs to further improve the fastness of pressing cap 3 and wall connection.

Further, the one end that expansion sleeve 1 was equipped with pressure cap 3 still is equipped with end cap 7 (fig. 6), end cap 7 is used for sealing expansion sleeve 1's tip, makes the screw sealed in expansion sleeve 1, prevents that screw 2 from carrying out the heat exchange to the wall body both sides, and then influences the heat preservation effect, and sealed end cap 7 can effectively prevent the concrete to get into in expansion sleeve 1's the inner chamber simultaneously, avoids the concrete to lead to the fact the corruption to screw 2, has further strengthened the life of screw 2.

Claims (10)

1. The utility model provides a two segmentation's heat preservation crab-bolt, includes expansion sleeve (1) and screw (2) that are located the expansion sleeve intracavity, the one end of expansion sleeve (1) is equipped with presses cap (3), a serial communication port, expansion sleeve (1) is including sleeve (11) and expansion pipe (12), press cap (3) to be located the one end of sleeve (11), the other end and the expansion pipe (12) of sleeve (11) can be dismantled and be connected, the one end that expansion pipe (12) and sleeve (11) are connected is the opening, the other end of expansion pipe (12) is equipped with sealed terminal surface (4), the lower extreme of expansion pipe (12) is equipped with a plurality of expansion tank (6), expansion tank (6) equidistance interval distribution.

2. The two-segment heat-insulating anchor bolt as claimed in claim 1, characterized in that: the sleeve (11) comprises a first sleeve (111) and a second sleeve (112) which are integrally formed, the inner diameter of the first sleeve (111) is larger than the nut diameter of the screw (2), the inner diameter of the second sleeve (112) is smaller than the nut diameter of the screw (2), and the inner diameter of the second sleeve (112) is larger than the diameter of the screw body of the screw (2).

3. The two-segment heat-insulating anchor bolt as claimed in claim 1, characterized in that: the expansion pipe (12) comprises a supporting part (121) and an expansion part (122), the outer diameter of the expansion part (122) is larger than that of the supporting part (121), the upper end of the supporting part (121) is detachably connected with the second sleeve (112), the lower end of the supporting part (121) and the expansion part (122) are integrally formed, and the expansion groove (6) extends upwards from the lower end of the expansion part (122).

4. A two-part insulating anchor according to claim 3, characterised in that: an engaging portion (1121) is provided at an end of the second sleeve (112), and a connecting portion (1211) connected to the engaging portion (1121) is provided at an end of the support portion (121).

5. The two-part insulating anchor according to claim 4, characterized in that: the outer wall of the matching portion (1121) is provided with two clamping blocks (1122), the clamping blocks (1122) are symmetrically arranged, the inner wall of the connecting portion (1211) is provided with axial sliding grooves (1212) which are matched with the two clamping blocks (1122), the bottom of each sliding groove (1212) is provided with an arc-shaped groove (1213) which extends in the same direction along the circumferential direction of the inner wall of the connecting portion (1211), and the tail end of each arc-shaped groove (1213) is provided with a locking hole (1214) matched with the clamping block (1122).

6. The two-segment heat-insulating anchor bolt as claimed in claim 1, characterized in that: the outer wall of expansion pipe (12) is equipped with toper pawl (5), the cross-sectional shape of toper pawl (5) is triangle-shaped, toper pawl (5) bottom is most advanced, a side of toper pawl (5) and the outer wall integrated into one piece of expansion pipe (12).

7. The two-part insulating anchor according to claim 4, characterized in that: the upper end of the expansion groove (6) is provided with a crack stop hole (61) communicated with the expansion groove (6), and the diameter of the crack stop hole (61) is larger than the width of the expansion groove (6).

8. The two-segment heat-insulating anchor bolt as claimed in claim 1, characterized in that: the expansion groove (6) is in irregular wave shape.

9. The two-segment heat-insulating anchor bolt as claimed in claim 1, characterized in that: the pressure cap (3) and the expansion sleeve (1) are integrally formed, the pressure cap (3) is outwards extended along the diameter direction from the outer wall of the end part of the expansion sleeve (1), a plurality of through holes are formed in the end face of the pressure cap (3), and a plurality of bulges are arranged on the end face of one end, far away from the expansion sleeve (1), of the pressure cap (3).

10. The two-part insulating anchor according to claim 9, characterized in that: and a plug (7) is further arranged at one end of the expansion sleeve (1) provided with the pressing cap (3).

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