Connecting steel bar pre-embedding positioning device

Abstract

The utility model discloses a connecting reinforcing steel bar pre-embedding positioning device which comprises two positioning frames, a plurality of connecting reinforcing steel bars and a plurality of connecting reinforcing steel bars, wherein the two positioning frames are oppositely arranged at intervals through a fixing mechanism; the multiple sliding parts are arranged on the positioning frame in a sliding mode in the length direction through fasteners, each sliding part is provided with an upper notch and a lower notch, and the upper notches and the lower notches are vertically aligned; the locking piece is arranged on the sliding piece and located above the upper notch and the lower notch, and the locking piece is in a semicircular groove shape; the positioning device can ensure the same elevation of the spacing of the connecting steel bars, the depth of inserting into the concrete, the perpendicularity of the steel bars and the heads of the steel bars, so that the steel bars can be pre-buried before the concrete is vibrated, the vibrated concrete more effectively wraps the connecting steel bars, and the problems that the spacing of the steel bars is not uniform, the elevation of the steel bars is not uniform, and the construction efficiency is low when the current connecting steel bars are pre-buried are effectively solved. The depth of the steel bars inserted into the concrete is insufficient, and the like.

Description

Technical Field

[0001] The utility model relates to a pre-embedded positioning device for joint steel bars, belonging to the technical field of joint steel bar construction. Background Art

[0002] At present, when pouring concrete for the bottom plate or invert in the auxiliary tunnel of the tunnel, it is necessary to pre-embed the secondary lining concrete joint steel bars. However, due to the uncertainty of the initial setting time of concrete and the poor timing of the single pre-embedded steel bars on site, many problems often occur during the pre-embedded joint steel bars, such as uneven steel bar spacing, uneven steel bar elevations, crooked steel bars, insufficient insertion depth into the concrete, etc. In addition, the single pre-embedded steel bars also have the problems of large workload and low efficiency. Utility Model Content

[0003] Based on the above, the utility model provides a pre-embedded positioning device for joint steel bars to overcome the deficiencies of the prior art.

[0004] The technical solution of the utility model is: a pre-embedded positioning device for joint steel bars, comprising:

[0005] Positioning frames, two of the positioning frames are arranged relatively spaced apart by a fixing mechanism;

[0006] Sliding members, a plurality of said sliding members are slidably arranged on said positioning frame along the length direction by fasteners, said sliding members are provided with an upper notch and a lower notch, said upper notch is vertically aligned with said lower notch;

[0007] The locking piece is arranged on the sliding piece and is located above the upper notch and the lower notch. The locking piece is in the shape of a semicircular groove.

[0008] In one example, the positioning frame includes a crossbeam and a column, two crossbeams are arranged at intervals along a height direction, and the columns are arranged at intervals between the crossbeams.

[0009] In one example, the sliding member includes an upper sliding body, a middle sliding body and a lower sliding body, and the upper sliding body and the lower sliding body are respectively arranged laterally on the same side at both ends of the middle sliding body, and the bottom surface of the upper sliding body and the top surface of the lower sliding body are both provided with sliding blocks, and the corresponding crossbeam is provided with a sliding groove, and the sliding block is slidably installed in the sliding groove.

[0010] In one example, the fastener is a fastening screw, which is installed on the upper side of the upper sliding body.

[0011] In one example, the fixing mechanism includes an upper clamping plate, a lower clamping plate and a locking bolt, and clamping grooves are provided on both sides of the upper clamping plate and the lower clamping plate, and the locking bolt is installed between the upper clamping plate and the lower clamping plate.

[0012] In one example, a circumferential notch is provided in the middle of the locking element.

[0013] The beneficial effects of the utility model are as follows: by combining the positioning frame, the sliding part and the locking part into a positioning device, the spacing of the joint steel bars, the depth of insertion into concrete, the verticality of the steel bars and the same elevation of the steel bar heads can be ensured, so that they can be pre-buried before the concrete is vibrated, and the concrete after vibration can wrap the joint steel bars more effectively, effectively solving the problems existing in the current pre-buried joint steel bars, such as uneven spacing of steel bars, uneven steel bar elevations, crooked steel bars, insufficient insertion depth into concrete and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the usage status diagram of the pre-embedded positioning device for joint steel bars;

[0015] Figure 2 It is a schematic diagram of the pre-embedded positioning device for the joint steel bars;

[0016] Figure 3 is a schematic diagram of a positioning frame;

[0017] Figure 4 is a schematic diagram of a sliding member;

[0018] Figure 5 is another schematic diagram of a sliding member;

[0019] Figure 6 is a schematic diagram of a fixing mechanism;

[0020] Description of reference numerals:

[0021] 1 positioning frame, 11 crossbeam, 12 column, 13 slide groove; 2 sliding member, 21 upper slide body, 22 middle slide body, 23 lower slide body, 24 slider, 25 upper notch, 26 lower notch, 27 fastener; 3 locking member, 31 annular notch; 4 fixing mechanism, 41 upper clamping plate, 42 lower clamping plate, 43 locking bolt, 44 clamping groove. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0023] See also Figures 1 to 6The present embodiment provides a pre-embedded positioning device for joint steel bars, comprising a positioning frame 1, a sliding member 2 and a locking member 3. The positioning frame 1 comprises a crossbeam 11 and a column 12, two crossbeams 11 are arranged at intervals in the height direction, and a plurality of columns 12 are installed at intervals between the crossbeams 11. The two positioning frames 1 are connected by a fixing mechanism 4. A plurality of slides 2 are slidably installed on the positioning frame 1 along the length direction by fasteners 27. The slides 2 include an upper slide 21, a middle slide 22 and a lower slide 23. The upper slide 21 and the lower slide 23 are respectively connected to the two ends of the middle slide 22 on the same side, and the bottom surface of the upper slide 21 and the top surface of the lower slide 23 are provided with slides 24. The corresponding two cross beams 11 are provided with slide grooves 13 along the length direction. The slides 24 are slidably installed in the slide grooves 13. Through the cooperation of the slides 24 and the slide grooves 13, the accurate adjustment of the slides 2 on the positioning frame 1 can be ensured. An upper notch 25 is provided on the upper slide 21, and a lower notch 26 is provided on the lower slide 23. The upper notch 25 and the lower notch 26 are vertically aligned, which can ensure the verticality of the steel bar installation and meet the design requirements of the verticality of the fixed steel bar. The fasteners 27 are fastening screws, which are installed on the upper side of the upper slide 21. The locking piece 3 is installed on the upper slide body 21 and the lower slide body 23, and is located above the upper notch 25 and the lower notch 26. The locking piece 3 is in the shape of a semicircular groove. The joint steel bars are placed in the upper notch 25 and the lower notch 26, and are tied to the locking piece 3 by wire. In order to facilitate the tying, an annular notch 31 is provided in the middle of the locking piece 3. In order to facilitate the installation of the two positioning frames 1, the fixing mechanism 4 includes an upper clamping plate 41, a lower clamping plate 42 and a locking bolt 43. The upper clamping plate 41 and the lower clamping plate 42 are provided with clamping grooves 44 on both sides. The clamping grooves 44 are respectively clamped on the crossbeam 11, and the locking bolt 43 is installed between the upper clamping plate 41 and the lower clamping plate 42.

[0024] The construction method of the above-mentioned joint steel bar pre-embedded positioning device is as follows:

[0025] First, adjust the position of the sliding member 2 on the positioning frame 1 according to the spacing of the steel bars, and connect the two positioning frames 1 through the fixing mechanism 4 to form a double-row positioning frame 1; then put the four steel bars into the upper notch 25 and the lower notch 26 on the four corners respectively, determine the elevation of the four steel bars at the four corners and tie them in the locking piece 3; then tie the remaining steel bars; when the bottom plate concrete is poured to 1 / 3 of the height, two workers lift the positioning device with the steel bars tied to the embedded position and fix its position with transverse steel bars. Measure 27cm at the edge of the bottom plate ditch to determine the horizontal position, and the bottom of the fixing frame is 5cm higher than the top surface of the concrete to determine the elevation of the steel bars and the reserved length. Finally, vibrate and compact the surrounding area of ​​the steel bars and close the surface. Before pouring concrete next time, unscrew the bolts and steel plates, reconnect the positioning frame 1, and tie the steel bars for reuse. This positioning device can not only meet the requirements of fixing the elevation of the steel bars, but also meet the requirements of facilitating the vibration and closing of the concrete.

[0026] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pre-embedded positioning device for joint steel bars, characterized in that: include: Positioning frames (1), two of the positioning frames (1) being arranged at a relative interval via a fixing mechanism (4); Sliding members (2), a plurality of the sliding members (2) are slidably arranged on the positioning frame (1) along the length direction via fasteners (27), the sliding members (2) are provided with an upper notch (25) and a lower notch (26), and the upper notch (25) is vertically aligned with the lower notch (26); The locking piece (3) is arranged on the sliding piece (2) and is located above the upper notch (25) and the lower notch (26); the locking piece (3) is in the shape of a semicircular groove.

2. The pre-embedded positioning device for joint steel bars according to claim 1 is characterized in that: The positioning frame (1) comprises a crossbeam (11) and a column (12), wherein the two crossbeams (11) are arranged at intervals in a height direction, and the columns (12) are arranged at intervals between the crossbeams (11).

3. The pre-embedded positioning device for joint steel bars according to claim 2 is characterized in that: The sliding member (2) comprises an upper sliding body (21), a middle sliding body (22) and a lower sliding body (23), wherein the upper sliding body (21) and the lower sliding body (23) are respectively arranged transversely at the two ends of the middle sliding body (22) on the same side, and a sliding block (24) is provided on the bottom surface of the upper sliding body (21) and the top surface of the lower sliding body (23), and a sliding groove (13) is provided on the corresponding crossbeam (11), and the sliding block (24) is slidably installed in the sliding groove (13).

4. The pre-embedded positioning device for joint steel bars according to claim 3 is characterized in that: The fastener (27) is a fastening screw, which is mounted on the upper side surface of the upper sliding body (21).

5. The pre-embedded positioning device for joint steel bars according to claim 1 is characterized in that: The fixing mechanism (4) comprises an upper clamping plate (41), a lower clamping plate (42) and a locking bolt (43); clamping grooves (44) are provided on both sides of the upper clamping plate (41) and the lower clamping plate (42); and the locking bolt (43) is installed between the upper clamping plate (41) and the lower clamping plate (42).

6. The pre-embedded positioning device for joint steel bars according to claim 1 is characterized in that: The locking piece (3) is provided with an annular notch (31) in the middle.

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