CN115075475A

CN115075475A - Pre-buried drawknot muscle positioning mechanism

Info

Publication number: CN115075475A
Application number: CN202210937530.3A
Authority: CN
Inventors: 张学华; 潘文广; 夏儒; 师潇; 伍春燕
Original assignee: CITIC Guoan Construction Group Co Ltd
Current assignee: CITIC Guoan Construction Group Co Ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-09-20

Abstract

The invention discloses a positioning mechanism for an embedded tie bar, relates to the field of building construction, and can position the embedded tie bar in a pouring process to prevent the deviation from influencing the subsequent tie effect. Including the template that is equipped with a plurality of first through-holes, be equipped with locating component on the first through-hole, locating component includes the tight lantern ring of supporting of the position sleeve body and threaded connection in the position sleeve body, wherein is equipped with the centre gripping chamber of reducing gradually towards the inboard in the position sleeve body, has a plurality of being used for in the centre gripping chamber and presss from both sides tightly the grip block of pre-buried drawknot muscle, the grip block can reduce the width in centre gripping clearance under the extrusion of supporting the tight lantern ring. The embedded tie bar positioning device can position the embedded tie bar, prevent the embedded tie bar from displacing in the pouring forming process, and ensure the installation quality of the tie bar.

Description

Pre-buried drawknot muscle positioning mechanism

Technical Field

The invention relates to the field of building construction, in particular to a pre-buried tie bar positioning mechanism.

Background

In the practical implementation of building engineering, sometimes need to adopt the reinforcing bar of tie bar with the concrete component tie back brickwork together. The tie bar is generally divided into two setting modes, one of which is bar planting, namely a bar planting mode of drilling holes on the concrete member and planting the tie bar after the concrete member is poured; the other is pre-embedding, namely, a bar planting mode that the tie bars are arranged on the member steel bars in advance before the concrete member is poured, and the free ends of the tie bars are exposed outside when the concrete member is poured is adopted. In the existing stage, the mode of bar planting is poor in tie quality, and bar planting cost needs to be additionally increased, so that a pre-buried mode is mostly selected.

At this time, for the pre-embedded tie bars, the tie bars are easily deviated in the process of pouring concrete members or vibrating concrete, and the subsequent tie effect is affected. In the process of formwork support, drill holes for penetrating the embedded tie bars need to be drilled in the formwork, and after pouring is completed, the formwork is inconvenient to remove due to the fact that the formwork is blocked by the free ends of the embedded tie bars, the formwork is damaged greatly and cannot be reused, the investment cost of the formwork is increased, and unnecessary waste is caused.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a positioning mechanism can fix a position pre-buried drawknot muscle at the in-process of pouring, prevents that its off normal from influencing the effect of follow-up drawknot.

The invention is realized by the following technical scheme:

a pre-buried drawknot rib positioning mechanism comprises a template, wherein a plurality of first through holes are formed in the template, a positioning assembly covers the outer ends of the first through holes, the positioning assembly comprises a positioning sleeve body detachably connected with the template, a second through hole is formed in the positioning sleeve body, the outer end of the second through hole is in threaded connection with a pressing sleeve ring, a third through hole is formed in the pressing sleeve ring, and the first through hole, the second through hole and the third through hole can simultaneously penetrate through pre-buried drawknot ribs;

the inner of second through-hole has the centre gripping chamber of the gradual undergauge of inboard, a plurality of grip blocks have in the centre gripping chamber, the outer end of a plurality of grip blocks with support the contact of tight lantern ring, the cooperation forms between a plurality of grip blocks and is used for pressing from both sides tightly the centre gripping clearance of pre-buried drawknot muscle works as when supporting the tight lantern ring and screwing to the inboard, a plurality of grip blocks can support and go deep under the extrusion of the tight lantern ring the centre gripping chamber, and the width that reduces the centre gripping clearance under the extrusion in centre gripping chamber is in order to carry out the centre gripping location to pre-buried drawknot muscle.

Wherein, the inner parts are close to one side of the casting to be poured, and the outer parts are close to one side of the casting to be poured. The template can cover the one side that is equipped with pre-buried drawknot muscle on waiting to water the piece to make pre-buried drawknot muscle can pass first through-hole, second through-hole and third through-hole in proper order, at this moment support the tight lantern ring and unscrew, do not produce the extrusion to the grip block, pre-buried drawknot muscle can be worn out from the centre gripping clearance in a plurality of grip blocks. After the pre-buried tie bar is installed in place and a casting to be cast is poured, the clamping block is tightly extruded at the periphery of the pre-buried tie bar under the extrusion of the clamping ring and the clamping cavity by screwing the clamping ring, so that the pre-buried tie bar is positioned, the pre-buried tie bar is prevented from being displaced in the pouring forming process, and the installation quality of the tie bar is ensured.

Optionally, the cavity wall of the clamping cavity surrounds to form a circular truncated cone structure, and the side surface of the clamping block is of an arc structure matched with the cavity wall of the clamping cavity.

Further optionally, the outer end of the second through hole is provided with a threaded cavity, the cavity wall of the threaded cavity is in threaded connection with the outer side face of the abutting sleeve ring, the inner end of the threaded cavity is communicated with the lower bottom face of the clamping cavity, the diameter of the threaded cavity is larger than that of the lower bottom face of the clamping cavity, the outer end of the clamping block extends into the threaded cavity and can be extruded by the abutting sleeve ring, and therefore the abutting sleeve ring can extrude the clamping block.

Optionally, the number of the clamping blocks is at least three, clamping surfaces parallel to the axis of the clamping cavity are arranged at the edge of the clamping block close to the axis of the clamping cavity, and clamping gaps for clamping the embedded tie bars are formed among all the clamping surfaces at intervals.

Further optionally, the inner end of the clamping surface has a lead-in inclined surface inclined away from the axis of the clamping cavity.

Optionally, the outer side of the abutting collar is provided with a matching block exposed outside the second through hole, and the matching block is of a prism structure and is used for matching with a wrench to drive the abutting collar to rotate.

Optionally, a guide groove is formed in the side surface of the clamping block, a guide strip extending into the guide groove is arranged on the cavity wall of the clamping cavity, and the guide strip is used for being matched with the guide groove to guide the clamping block to penetrate into the clamping cavity.

Optionally, the formwork comprises a plurality of formwork splicing plates arranged side by side in the height direction, the two side edges of the formwork splicing plates in the height direction are respectively provided with a plurality of semicircular grooves, and the semicircular grooves can be matched with corresponding semicircular grooves of adjacent formwork splicing plates to form a first circular through hole for the embedded tie bar to pass through;

the outside of two arbitrary adjacent template splice plates can be dismantled and be connected with the template reinforcing plate, the template reinforcing plate have with the circular through-hole of second of first circular through-hole adaptation, the cooperation of first circular through-hole and the circular through-hole of second forms first through-hole, the template reinforcing plate with the connection can be dismantled to the position sleeve body.

Further optionally, a threaded sleeve is fixedly arranged on the template reinforcing plate, the inner end of the threaded sleeve is communicated with the second circular through hole, and the inner wall of the threaded sleeve is in threaded connection with the outer wall of the positioning sleeve body.

Optionally, the template splicing plates are connected with the two template splicing plates through screws.

The invention has the following advantages and beneficial effects:

according to the positioning mechanism for the pre-buried tie bar provided by the embodiment of the invention, the clamping block is tightly extruded on the periphery of the pre-buried tie bar under the extrusion of the abutting sleeve ring and the clamping cavity by screwing the abutting sleeve ring, so that the pre-buried tie bar is positioned, the pre-buried tie bar is prevented from being displaced in the pouring forming process, and the mounting quality of the tie bar is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is an overall front view of embodiment 1 of the present invention;

FIG. 2 is a front view of the splice bar of the form of example 1 of the present invention;

FIG. 3 is a front view of a positioning assembly according to embodiment 1 of the present invention;

FIG. 4 is an overall side sectional view of embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a positioning assembly according to embodiment 1 of the present invention;

FIG. 6 is a schematic view of the inner structure of the positioning sleeve body in example 1 of the present invention;

FIG. 7 is a schematic view of an outer structure of a positioning sleeve body according to embodiment 1 of the present invention;

fig. 8 is a schematic structural view of the abutting collar in embodiment 1 of the present invention.

Reference numbers and corresponding part names in the drawings:

1-template, 11-first through hole, 12-template splice plate, 121-first circular through hole, 13-template reinforcing plate, 131-second circular through hole, 132-threaded sleeve, 133-screw, 2-positioning sleeve body, 21-second through hole, 22-clamping cavity, 221-guide strip, 23-threaded cavity, 3-abutting lantern ring, 31-third through hole, 32-mating block, 4-clamping block, 41-clamping surface, 42-leading-in inclined surface, 43-guide groove and 5-pre-buried tie bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the invention.

Example 1:

a pre-buried tie bar positioning mechanism is shown in figures 1 to 8 and comprises a template 1, wherein a plurality of first through holes 11 are formed in the template 1, a positioning assembly covers the outer ends of the first through holes 11 and comprises a positioning sleeve body 2 detachably connected with the template 1, a second through hole 21 is formed in the positioning sleeve body 2, the outer end of the second through hole 21 is in threaded connection with a clamping sleeve ring 3, a third through hole 31 is formed in the clamping sleeve ring 3, and the first through hole 11, the second through hole 21 and the third through hole 31 can simultaneously penetrate through a pre-buried tie bar 5;

the inner of second through-hole 21 has the centre gripping chamber 22 of reducing gradually towards the inboard, a plurality of grip blocks 4 have in the centre gripping chamber 22, the outer end of a plurality of grip blocks 4 with support the contact of the tight lantern ring 3, the cooperation forms between a plurality of grip blocks 4 and is used for pressing from both sides tightly pre-buried drawknot muscle 5's centre gripping clearance works as when supporting the tight lantern ring 3 and screwing to the inboard, a plurality of grip blocks 4 can support and deepen under the extrusion of the tight lantern ring 3 centre gripping chamber 22, and the width that reduces the centre gripping clearance under the extrusion of centre gripping chamber 22 is in order to carry out the centre gripping location to pre-buried drawknot muscle 5.

Wherein, the inner parts are close to one side of the casting to be poured, and the outer parts are close to one side of the casting to be poured. Template 1 can cover the one side that is equipped with pre-buried drawknot muscle 5 on waiting to water the piece to make pre-buried drawknot muscle 5 can pass first through-hole 11, second through-hole 21 and third through-hole 31 in proper order, at this moment support the tight lantern ring 3 and unscrew, do not produce the extrusion to grip block 4, pre-buried drawknot muscle 5 can wear out from the centre gripping clearance among a plurality of grip blocks 4. After the pre-buried tie bar 5 is installed in place and a casting to be cast is poured, the clamping block 4 is tightly extruded on the periphery of the pre-buried tie bar 5 under the extrusion of the clamping ring 3 and the clamping cavity 22 by screwing the clamping ring 3, so that the pre-buried tie bar 5 is positioned, the pre-buried tie bar 5 is prevented from displacing in the pouring forming process, and the installation quality of the tie bar is ensured.

The diameter of the embedded tie bar 5 is generally 6mm, but the embedded tie bar 5 can be adjusted sometimes according to different on-site working conditions, the diameter is slightly increased, and at the moment, the diameters of the first through hole 11, the second through hole 21 and the third through hole 31 are slightly larger than the diameter of the embedded tie bar 5, so that the embedded tie bars 5 with different diameters can conveniently pass through, and the embedded tie bars 5 with different diameters can be clamped and positioned through the clamping block 4.

It should be noted that, the outer end of the embedded lacing bar 5 is usually as shown in fig. 5, and the inner bending constitutes a hook structure, the positioning sleeve body 2 and the abutting lantern ring 3 can be moved on the embedded lacing bar 5 through disassembly, the clamping block 4 can be taken out from the port connected with the abutting lantern ring 3 on the positioning sleeve body 2, and the positioning sleeve body 2 and the abutting lantern ring 3 slide out from the free end of the hook structure, so as to realize the disassembly of the positioning assembly, thereby ensuring the turnover use of the positioning assembly. The specifications of the positioning sleeve body 2 and the abutting lantern ring 3 can be matched with the hook body structure, so that the positioning sleeve body 2 and the abutting lantern ring 3 can conveniently slide out of the free end of the hook body structure.

In one or more embodiments, as shown in fig. 6, the cavity wall of the clamping cavity 22 surrounds to form a circular truncated cone structure, and the side surface of the clamping block 4 is an arc structure adapted to the cavity wall of the clamping cavity 22, so that the clamping block 4 is tightly abutted against the cavity wall of the clamping cavity 22 when being squeezed by the abutting block and is difficult to move.

The cross-sectional shape of the clamping block 4 is substantially sector-shaped.

The outer end of the second through hole 21 is provided with a threaded cavity 23, the cavity wall of the threaded cavity 23 is in threaded connection with the outer side face of the abutting collar 3, the inner end of the threaded cavity 23 is communicated with the lower bottom face of the clamping cavity 22, the diameter of the threaded cavity 23 is larger than that of the lower bottom face of the clamping cavity 22, the outer end of the clamping block 4 extends into the threaded cavity 23 and can be squeezed by the abutting collar 3, and therefore the abutting collar 3 can squeeze the clamping block 4.

The outer side of the tightening collar 3 is provided with a matching block 32 exposed outside the second through hole 21, as shown in fig. 8, and the matching block 32 is in a prism structure and is used for matching with a wrench to drive the tightening collar 3 to rotate. At this time, the matching block 32 is screwed by a wrench, so as to drive the whole tightening sleeve ring 3 to rotate, and the tightening sleeve ring 3 is screwed in or out of the threaded cavity 23.

As shown in fig. 6, the number of the clamping blocks 4 is at least three, clamping surfaces 41 parallel to the axis of the clamping cavity 22 are arranged at the edge parts of the clamping blocks 4 close to the axis of the clamping cavity 22, and clamping gaps for clamping the embedded tie bars 5 are formed among all the clamping surfaces 41 at intervals.

The clamping surface 41 can be of a plane structure or an arc surface structure, and the clamping surface 41 parallel to the axis of the clamping cavity 22 clamps the embedded tie bar 5, so that the stability of the embedded tie bar 5 can be ensured, and the embedded tie bar 5 is prevented from generating displacement.

Considering that the surface of part of the embedded tie bars 5 is not flat, in the process that the clamping block 4 extends into the clamping cavity 22, the inner ends of the clamping block 4 may be in contact with the surface of the embedded tie bars 5 in advance and cannot extend into the clamping cavity 22 continuously due to the blocking of the surface protrusions of the embedded tie bars 5, so that the clamping block 4 cannot effectively clamp and position the embedded tie bars 5; if the pressing of the clamping block 4 by the abutting collar 3 is forcibly increased at this time, damage to the clamping block 4 may even be caused. Thus, in one or more embodiments, the inner end of the gripping surface 41 has a lead-in inclined surface 42 that slopes away from the axis of the gripping chamber 22. At this time, all the guiding inclined planes 42 are opened outwards along the direction close to the template 1, so that the clamping blocks 4 are not blocked by the surface protrusions of the embedded tie bars 5, and the clamping and positioning effects of the clamping blocks 4 on the embedded tie bars 5 are ensured.

In one or more embodiments, a guide groove 43 is provided on a side surface of the clamping block 4, a guide strip 221 extending into the guide groove 43 is provided on a cavity wall of the clamping cavity 22, and the guide strip 221 is used for cooperating with the guide groove 43 to guide the clamping block 4 to penetrate into the clamping cavity 22. At this time, the moving direction of the clamping block 4 is fixed, so that the clamping block 4 is prevented from inclining along with the rotation of the abutting lantern ring 3 in the process of penetrating into the clamping cavity 22, and the clamping surface 41 on the clamping block is prevented from inclining and being incapable of carrying out effective clamping and positioning.

On the basis, all the clamping blocks 4 in the clamping cavity 22 are uniformly arranged at intervals in the circumferential direction around the axis of the clamping cavity 22, so that the clamping surfaces 41 can be uniformly abutted to the periphery of the embedded tie bar 5, and the clamping and positioning effects are improved.

In one or more embodiments, the formwork 1 includes a plurality of formwork splicing plates 12 arranged side by side in the height direction, the two side edges of the formwork splicing plates 12 in the height direction are respectively provided with a plurality of semicircular grooves, and the semicircular grooves can be matched with corresponding semicircular grooves of adjacent formwork splicing plates 12 to form a first circular through hole 121 for the embedded tie bar 5 to pass through;

the outer sides of any two adjacent template splicing plates 12 can be detachably connected with template reinforcing plates 13, the template reinforcing plates 13 are provided with second circular through holes 131 matched with the first circular through holes 121, the first circular through holes 121 and the second circular through holes 131 are matched to form the first through holes 11, and the template reinforcing plates 13 can be detachably connected with the positioning sleeve body 2.

It should be noted that the formwork 1 described herein refers to the formwork 1 on the side surface of the to-be-poured member with the embedded tie bar 5. Wherein according to the setting regulation of pre-buried drawknot muscle 5, the height interval and the width interval of pre-buried drawknot muscle 5 setting on treating the casting are relatively fixed, and its height interval generally is 500mm, and its width interval generally is 125mm, and the height and this height interval adaptation of single template splice plate 12 this moment are 500mm, and the interval of semicircle recess also with this width interval adaptation on it, be 125 mm. Therefore, the single template splicing plate 12 can be applied to a plurality of construction projects as long as the width requirement of the side face of one side of the member to be poured, which is provided with the embedded tie bar 5, can be met. At this time, a plurality of template splicing plates 12 can be spliced in the height direction to form the required template 1, wherein any two adjacent template splicing plates 12 are mainly connected through the template reinforcing plate 13. The template reinforcing plate 13 can play a role in connecting the template splicing plates 12 and can also be connected with the positioning sleeve body 2, so that the stress applied to the template 1 when the positioning sleeve body 2 positions the embedded lacing bar 5 is borne, the template 1 is prevented from deforming under the action of the stress, and the positioning effect that the embedded lacing bar 5 cannot be played due to the inclination of the positioning assembly is avoided.

Wherein, because the orientation of the coupler body structure of a plurality of pre-buried drawknot muscle 5 that is in the same height often is different, as shown in the figure, the coupler body structure of two pre-buried drawknot muscle 5 sets up in opposite directions, at this moment, template 1 that comprises a plurality of template splice plates 12 can be split into a plurality of template splice plates 12 and tie and demolish once more after accomplishing pouring, and every template reinforcing plate 13 has and only has a circular through-hole 131 of second, the free end roll-off of the coupler body structure that corresponds can directly be followed to template reinforcing plate 13 to this realizes dismantling of whole template 1 under the prerequisite that does not damage template 1, the turnover of the follow-up template 1 of being convenient for is used.

It should be noted that, at this time, a fine gap may exist between two adjacent formworks 1 due to an assembly error, and a fine gap also exists between the first circular through hole 121 and the embedded tie bar 5, the width of the fine gap is smaller and generally does not exceed 5mm, at this time, the concrete often hardly overflows from the gap under the width due to the viscosity of the concrete, but a corresponding protrusion may be formed at a position corresponding to the gap after molding, but considering that the side surface of the to-be-cast part, on which the embedded tie bar 5 is disposed, may be cast again in subsequent construction, so the protrusion may be covered in the subsequent construction, and thus the molding quality of the overall construction may not be affected. Further, if the viscosity of the concrete is low, there is a possibility of overflow from the fine gap, and it is also possible to prevent the concrete from overflowing by providing a filler including a wood strip at the fine gap.

The connection between the formwork 1 and other formworks 1 of the to-be-cast member belongs to the conventional technical means in the field, and is not described in detail herein.

The template reinforcing plate 13 is fixedly provided with a threaded sleeve 132, the inner end of the threaded sleeve 132 is communicated with the second circular through hole 131, and the inner wall of the threaded sleeve 132 is in threaded connection with the outer wall of the positioning sleeve body 2.

The outer wall threads and the inner wall threads of the positioning sleeve body 2 are the same in rotating direction, so that the positioning sleeve body 2 and the template reinforcing plate 13 can be synchronously screwed when the abutting lantern ring 3 is screwed, and the connection stability of the whole positioning assembly is ensured.

The two template splicing plates 12 are connected with each other through screws 133.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The pre-buried drawknot rib positioning mechanism is characterized by comprising a template (1), wherein a plurality of first through holes (11) are formed in the template (1), the outer ends of the first through holes (11) are covered with positioning assemblies, each positioning assembly comprises a positioning sleeve body (2) detachably connected with the template (1), a second through hole (21) is formed in the positioning sleeve body (2), the outer end of the second through hole (21) is in threaded connection with a tightening sleeve ring (3), a third through hole (31) is formed in the tightening sleeve ring (3), and the first through hole (11), the second through hole (21) and the third through hole (31) can simultaneously penetrate through a pre-buried drawknot rib (5);

the inner of second through-hole (21) has centre gripping chamber (22) of reducing gradually towards the inboard, a plurality of grip blocks (4) have in centre gripping chamber (22), the outer end of a plurality of grip blocks (4) with support tight lantern ring (3) contact, the cooperation forms between a plurality of grip blocks (4) and is used for pressing from both sides tightly the centre gripping clearance of pre-buried drawknot muscle (5), works as when supporting tight lantern ring (3) and screwing to the inboard, a plurality of grip blocks (4) can be in support to go deep under the extrusion of tight lantern ring (3) centre gripping chamber (22), and reduce the width in centre gripping clearance under the extrusion of centre gripping chamber (22).

2. The embedded tie bar positioning mechanism is characterized in that the cavity wall of the clamping cavity (22) is surrounded to form a circular truncated cone structure, and the side surface of the clamping block (4) is of an arc structure matched with the cavity wall of the clamping cavity (22).

3. The embedded tie bar positioning mechanism is characterized in that a threaded cavity (23) is formed in the outer end of the second through hole (21), the cavity wall of the threaded cavity (23) is in threaded connection with the outer side face of the abutting sleeve ring (3), the inner end of the threaded cavity (23) is communicated with the lower bottom face of the clamping cavity (22), the diameter of the threaded cavity (23) is larger than that of the lower bottom face of the clamping cavity (22), and the outer end of the clamping block (4) extends into the threaded cavity (23) and can be extruded by the abutting sleeve ring (3).

4. The embedded tie bar positioning mechanism is characterized in that the number of the clamping blocks (4) is at least three, clamping surfaces (41) parallel to the axis of the clamping cavity (22) are arranged at the edge parts, close to the axis of the clamping cavity (22), of the clamping blocks (4), and clamping gaps for clamping the embedded tie bars (5) are formed among all the clamping surfaces (41) at intervals.

5. The embedded tie bar positioning mechanism is characterized in that the inner end of the clamping surface (41) is provided with a leading-in inclined surface (42) which inclines away from the axial direction of the clamping cavity (22).

6. The embedded tie bar positioning mechanism as claimed in claim 1, wherein a matching block (32) exposed outside the second through hole (21) is arranged outside the tightening ring (3), and the matching block (32) is of a prism structure and is used for matching with a wrench to drive the tightening ring (3) to rotate.

7. The embedded tie bar positioning mechanism according to claim 1, wherein a guide groove (43) is formed in a side surface of the clamping block (4), a guide strip (221) extending into the guide groove (43) is formed in a cavity wall of the clamping cavity (22), and the guide strip (221) is used for being matched with the guide groove (43) to guide the clamping block (4) to penetrate into the clamping cavity (22).

8. The embedded tie bar positioning mechanism is characterized in that the template (1) comprises a plurality of template splicing plates (12) which are arranged side by side along the height direction, the edges of two sides of each template splicing plate (12) along the height direction are respectively provided with a plurality of semicircular grooves, and the semicircular grooves can be matched with corresponding semicircular grooves of the adjacent template splicing plates (12) to form a first circular through hole (121) for the embedded tie bar (5) to pass through;

the outside of two arbitrary adjacent template splice plates (12) can be dismantled and be connected with template reinforcing plate (13), template reinforcing plate (13) have with the circular through-hole of second (131) of first circular through-hole (121) adaptation, first circular through-hole (121) and the circular through-hole of second (131) cooperation form first through-hole (11), template reinforcing plate (13) with the connection can be dismantled in the position sleeve body (2).

9. The embedded tie bar positioning mechanism of claim 8, wherein a threaded sleeve (132) is fixedly arranged on the template reinforcing plate (13), the inner end of the threaded sleeve (132) is communicated with the second circular through hole (131), and the inner wall of the threaded sleeve (132) is in threaded connection with the outer wall of the positioning sleeve body (2).

10. The embedded tie bar positioning mechanism of claim 8, wherein the two template splicing plates (12) are connected by a screw (133).