Adjustable caliper for detecting position of straight thread steel bar sleeve connection joint

Abstract

The utility model relates to an adjustable caliper for detecting the position of a straight thread rebar sleeve connection joint, which comprises a horizontal supporting plate, a handle rod is fixed in the middle of the bottom of the horizontal supporting plate, steel rulers symmetrical about the handle rod are arranged on the left side and the right side of the top of the horizontal supporting plate, and a mounting groove is formed in the bottom of the horizontal supporting plate. The left side and the right side of the adjusting rotating shaft are provided with threads opposite in rotating direction, the left end and the right end of the adjusting rotating shaft are provided with nuts symmetrical about the handle rod, connecting rods are fixed to the tops of the nuts, and sliding blocks are fixed to the tops of the connecting rods. Sliding grooves allowing the sliding blocks to slide left and right are formed in the left side and the right side of the top of the horizontal supporting plate, openings communicating with the mounting grooves are formed in the bottoms of the sliding grooves, and the connecting rods are located in the openings. The distance between the steel rulers on the two sides can be adjusted according to the length of the sleeve, the tool is suitable for sleeves of various lengths, the sleeve of each length does not need to be provided with a detection caliper, cost is reduced, and the tool is convenient to carry.

Description

Technical Field

[0001] The utility model relates to an adjustable caliper for detecting the position of a straight threaded steel bar sleeve connection joint, belonging to the technical field of bridge detection equipment. Background Art

[0002] When using straight threaded steel bar sleeves to connect steel bars, it is necessary to detect whether the connecting head of the steel bar is installed in place. This requires the use of a detection caliper. The current detection caliper has an opening in the middle that can accommodate the sleeve. The position of the connecting head is detected by aligning the two ends of the caliper with the marking lines on the steel bar. However, since there are many types of mechanical connection sleeves for steel bars at present, and their lengths are different, detection calipers require multiple types, which are not easy to carry and increase costs. Utility Model Content

[0003] The utility model provides an adjustable caliper for detecting the position of a straight threaded steel bar sleeve connection joint, which solves the problem that there are many types of steel bar mechanical connection sleeves with different lengths, and detection calipers of various types are needed, which are not easy to carry and increase the cost.

[0004] The utility model relates to an adjustable caliper for detecting the position of a straight threaded steel bar sleeve connection joint, comprising a horizontal support plate, a handle bar is fixed in the middle of the bottom of the horizontal support plate, steel rulers symmetrical to the handle bar are arranged on the left and right sides of the top of the horizontal support plate, a mounting groove is arranged at the bottom of the horizontal support plate, a horizontal adjustment shaft is rotatably installed in the mounting groove, threads with opposite rotation directions are arranged on the left and right sides of the adjustment shaft, nuts symmetrical to the handle bar are arranged at the left and right ends of the adjustment shaft, a connecting rod is fixed on the top of the nut, a sliding block is fixed on the top of the connecting rod, sliding grooves for sliding the sliding block to the left and right are arranged on the left and right sides of the top of the horizontal support plate, an opening connected to the mounting groove is arranged at the bottom of the sliding groove, and the connecting rod is located in the opening.

[0005] As a preferred embodiment, a dial wheel is fixed in the middle of the adjustment shaft, and a dial opening for the dial wheel to extend out is provided on the middle front and rear sides of the horizontal support plate, so as to facilitate the rotation of the adjustment shaft and thus facilitate the adjustment of the spacing between the steel rulers on both sides.

[0006] As a preferred embodiment, a slope is provided on the top of the steel ruler to facilitate measurement and alignment.

[0007] As a preferred embodiment, a positioning slot is provided in the middle of the top of the horizontal support plate, a positioning plate is provided above the positioning slot, and a positioning plug inserted into the positioning slot is fixed at the bottom of the positioning plate, so that the head position of the connecting head of the steel bar can be quickly located when marking.

[0008] As a preferred embodiment, a vertical marking line is provided in the middle of the positioning plate, and marking scale lines are provided on the outer sides of the steel ruler on both sides, and the distance between the marking scale lines and the outer end surface of the steel ruler is equal to the distance between the vertical marking line and the outer side surface of the positioning plate.

[0009] As a preferred embodiment, a storage slot is provided at the bottom of the handle rod, and a fixed slot cooperating with the positioning plug is provided at the top of the storage slot, so that the positioning plate can be stored when no line is drawn to prevent loss.

[0010] The utility model has the following beneficial effects:

[0011] The distance between the steel rulers on both sides can be adjusted according to the length of the sleeve to adapt to sleeves of various lengths. There is no need to equip each length of sleeve with a detection caliper, which reduces costs and is convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the side structure of the nut;

[0014] Figure 3 This is a schematic diagram of the main structure of Example 2;

[0015] In the figure: 1. adjusting shaft, 2. dial wheel, 3. toggle mouth, 4. handle rod, 5. horizontal support plate, 6. steel ruler, 7. opening, 8. mounting groove, 9. slider, 10. nut, 11. connecting rod, 12. slide groove, 13. ramp, 14. positioning plate, 15. vertical marking line, 16. positioning plug, 17. positioning slot, 18. storage slot, 19. fixing slot, 20. marking scale line. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with embodiments.

[0017] Embodiment 1, as Figure 1 to Figure 2 As shown, the utility model is an adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint, comprising a horizontal support plate 5, a handle bar 4 is fixed in the middle of the bottom of the horizontal support plate 5, and steel rulers 6 symmetrical to the handle bar 4 are provided on the left and right sides of the top of the horizontal support plate 5, and a mounting groove 8 is provided at the bottom of the horizontal support plate 5, and a horizontal adjustment shaft 1 is rotatably installed in the mounting groove 8, and the left and right sides of the adjustment shaft 1 are provided with threads with opposite rotation directions, and nuts 10 symmetrical to the handle bar 4 are installed at both ends of the adjustment shaft 1, and a connecting rod 11 is fixed on the top of the nut 10, and a slider 9 is fixed on the top of the connecting rod 11, and a slide groove 12 for the slider 9 to slide left and right is provided on the left and right sides of the top of the horizontal support plate 5, and an opening 7 connected to the mounting groove 8 is provided at the bottom of the slide groove 12, and the connecting rod 11 is located in the opening 7. The handle bar 4 and the horizontal support plate 5 are made of aluminum alloy.

[0018] A dial wheel 2 is fixed in the middle of the adjusting shaft 1, and dial openings 3 for the dial wheel 2 to extend out are provided at the middle front and rear sides of the horizontal supporting plate 5.

[0019] The top of the steel ruler 6 is provided with a slope 13 .

[0020] Before working, according to the length of the sleeve, rotate and adjust the rotating shaft 1, thereby driving the nuts 10 on both sides to move simultaneously, and adjust the position of the inner end surface of the steel ruler 6 so that the sleeve is just placed between the two steel rulers 6. During work: after the steel bar is sawed and threaded, use a marking ruler to mark the length of the steel bar, and then after the sleeve is connected, tighten it with a pipe wrench, hold the handle bar 4, and then clamp the sleeve between the two steel rulers 6. By the length of the two ends of the steel ruler 6 from the marked position, it can be judged whether the two sections of steel bars are tightly pressed and whether the connecting head is in the middle position of the sleeve. If the marked position deviates from the end of the steel ruler 6, it should be corrected with a pipe wrench. Until it meets the requirements.

[0021] Embodiment 2, as Figure 3 As shown, on the basis of embodiment 1, a positioning slot 17 is provided in the middle of the top of the horizontal support plate 5, a positioning plate 14 is provided above the positioning slot 17, and a positioning plug 16 inserted into the positioning slot 17 is fixed at the bottom of the positioning plate 14. The positioning slot 17 and the positioning plug 16 are interference fit.

[0022] A vertical marking line 15 is provided in the middle of the positioning plate 14 , and marking scale lines 20 are provided on the outer sides of the steel ruler 6 on both sides. The distance between the marking scale lines 20 and the outer end surface of the steel ruler 6 is equal to the distance between the vertical marking line 15 and the outer side surface of the positioning plate 14 .

[0023] A receiving slot 18 is provided at the bottom of the handle bar 4, and a fixed slot 19 is provided at the top of the receiving slot 18 to cooperate with the positioning plug 16. The fixed slot 19 and the positioning plug 16 are interference fit. When marking the length of the steel bar, the positioning plate can be pulled out from the receiving slot 18, and then the positioning plug 16 can be inserted into the positioning slot 17. Then, the side of the positioning plate 14 can be attached to the end face of the steel bar connector, and then the length mark can be drawn at the steel bar circumference corresponding to the outer end face of the steel ruler. When testing, the marking scale line 20 is compared with the length mark position to detect whether the connector is installed in place.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0025] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An adjustable caliper for detecting the position of a straight threaded steel bar sleeve connection joint, comprising a horizontal support plate (5), a handle bar (4) fixed in the middle of the bottom of the horizontal support plate (5), and steel rulers (6) symmetrical about the handle bar (4) are provided on both left and right sides of the top of the horizontal support plate (5), characterized in that: A mounting groove (8) is provided at the bottom of the horizontal support plate (5), a horizontal adjustment shaft (1) is rotatably installed in the mounting groove (8), threads with opposite rotation directions are provided on the left and right sides of the adjustment shaft (1), nuts (10) symmetrical with respect to the handle bar (4) are installed at both left and right ends of the adjustment shaft (1), a connecting rod (11) is fixed on the top of the nut (10), a sliding block (9) is fixed on the top of the connecting rod (11), a sliding groove (12) for the sliding block (9) to slide left and right is provided on both left and right sides of the top of the horizontal support plate (5), an opening (7) connected to the mounting groove (8) is provided at the bottom of the sliding groove (12), and the connecting rod (11) is located in the opening (7).

2. The adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint according to claim 1, characterized in that: A dial wheel (2) is fixed in the middle of the adjusting shaft (1), and dial openings (3) for the dial wheel (2) to extend are provided at the middle front and rear sides of the horizontal support plate (5).

3. The adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint according to claim 1, characterized in that: The top of the steel ruler (6) is provided with a slope (13).

4. The adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint according to claim 1, characterized in that: A positioning slot (17) is provided in the middle of the top of the horizontal support plate (5), a positioning plate (14) is provided above the positioning slot (17), and a positioning plug (16) inserted into the positioning slot (17) is fixed at the bottom of the positioning plate (14).

5. The adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint according to claim 4, characterized in that: A vertical marking line (15) is provided in the middle of the positioning plate (14), and marking scale lines (20) are provided on the outer sides of the steel rulers (6) on both sides, and the distance between the marking scale lines (20) and the outer end surface of the steel ruler (6) is equal to the distance between the vertical marking line (15) and the outer side surface of the positioning plate (14).

6. The adjustable caliper for detecting the position of the straight threaded steel bar sleeve connection joint according to claim 4, characterized in that: A receiving slot (18) is provided at the bottom of the handle bar (4), and a fixing slot (19) matched with the positioning plug (16) is provided at the top of the receiving slot (18).

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