Device for measuring hole depth and hole diameter of expanded hole of bag belt type anchor rod

Abstract

The utility model relates to the technical field of municipal construction, in particular to equipment for measuring the hole depth and the hole diameter of an expanded hole of a bag belt type anchor rod, which comprises a handheld seat, a hole diameter measuring mechanism and a hole depth measuring mechanism, the aperture measuring mechanism comprises a screw rod which is arranged in the middle of the handheld seat in a penetrating manner and is rotatably connected with the handheld seat, a measuring seat which is rotatably connected to the bottom end of the screw rod, a moving seat which is in threaded fit with the screw rod, two first connecting rods of which one ends are symmetrically hinged to the measuring seat, and two second connecting rods of which one ends are symmetrically hinged to the moving seat; and the other end of the first connecting rod is hinged with the other end of the second connecting rod. The hole diameter measuring mechanism and the hole depth measuring mechanism are integrated on the handheld seat, measurement of the hole diameter and the hole depth can be completed synchronously after the anchor hole is inserted at a time, and compared with a traditional step-by-step measuring mode, the construction efficiency is greatly improved. A screw rod-connecting rod mechanism is adopted for aperture measurement, and the aperture size is reflected through thread transmission and the expansion amplitude of a four-rod mechanism.

Description

Technical Field

[0001] This utility model relates to the field of municipal construction technology, specifically to a measuring device for the depth and diameter of enlarged holes in bladder-type anchor bolts. Background Technology

[0002] In municipal construction, the construction quality of the enlarged holes for bladder-type anchor bolts is crucial to the stability of the project, and accurately measuring the depth and diameter of the enlarged holes is a key step in ensuring construction quality. Current technologies for measuring such enlarged holes have the following shortcomings:

[0003] Low measurement efficiency: Traditional measuring instruments have difficulty measuring the diameter and depth of the enlarged hole of the bag anchor bolt. They often cannot simultaneously measure the hole depth and diameter, and require the use of different tools or separate steps, resulting in low construction efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a measuring device for the depth and diameter of the enlarged hole of a bladder-type anchor bolt, which solves the problem mentioned in the background art that it is impossible to simultaneously measure the hole depth and diameter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a measuring device for the depth and diameter of an enlarged hole in a bladder-type anchor bolt, comprising a handheld base, a hole diameter measuring mechanism and a hole depth measuring mechanism mounted on the handheld base. The hole diameter measuring mechanism includes a screw rod passing through the middle of the handheld base and rotatably connected to the handheld base, a measuring seat rotatably connected to the bottom end of the screw rod, a movable seat threadedly engaged with the screw rod, two first connecting rods symmetrically hinged at one end to the measuring seat, and two second connecting rods symmetrically hinged at one end to the movable seat; the other end of the first connecting rod is hinged to the other end of the second connecting rod.

[0006] Furthermore, the hole depth measuring mechanism includes two vertically symmetrically sliding rods mounted on a handheld base, and two measuring rods rotatably connected to the bottom ends of the two sliding rods respectively; the connection between the measuring rods and the sliding rods extends outward and is connected to a gear; the measuring base has symmetrical openings, and a rack is provided in the openings, the rack meshing with the gear.

[0007] Furthermore, the upper end of the screw is provided with a rotating seat.

[0008] Furthermore, the upper ends of the two slide bars are connected to a pull plate.

[0009] Furthermore, a positioning seat is provided at the bottom of the measuring seat.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. Integrated synchronous measurement: By integrating the hole diameter measurement mechanism and the hole depth measurement mechanism on the handheld base, the hole diameter and hole depth can be measured simultaneously after inserting the anchor hole once, which greatly improves construction efficiency compared with the traditional step-by-step measurement method.

[0012] 2. High-precision mechanical transmission: The hole diameter measurement adopts a screw-linkage mechanism, which reflects the hole diameter size through the expansion range of the screw drive and the four-bar linkage; the hole depth measurement uses gear-rack meshing transmission to convert the vertical displacement of the slide rod into the horizontal rotation of the measuring rod. The mechanical transmission structure is stable, reduces human error, and improves measurement accuracy.

[0013] 3. Reliable positioning and convenient operation: The positioning seat at the bottom of the measuring base can be inserted into the bottom fixing device of the enlarged hole to ensure stability during measurement; the design of the rotating base and the hand pull plate facilitates manual operation, and the operation mode of screw rotation and slide bar pulling conforms to the habits of construction personnel, reducing the difficulty of operation.

[0014] 3. Adaptability and compact structure: The measuring mechanism can be flexibly expanded and contracted to accommodate the structural characteristics of the enlarged hole of the bladder-type anchor bolt, making it suitable for measuring enlarged holes of different sizes; the overall structure is compact, easy to carry and operate on site, meeting the convenience requirements of municipal construction. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention;

[0016] Figure 2 This is a diagram showing the unfolded form of this utility model;

[0017] Figure 3 This is a side view of the present invention as unfolded;

[0018] Figure 4 This is an enlarged view of section A of the present invention.

[0019] In the picture:

[0020] 1. Handheld base; 2. Screw; 3. Measuring base; 4. Moving base; 5. First connecting rod; 6. Second connecting rod; 7. Slide rod; 8. Measuring rod; 9. Gear; 10. Rack; 11. Rotating base; 12. Hand pull plate; 13. Positioning base. Detailed Implementation

[0021] Please see Figures 1 to 4 A measuring device for the depth and diameter of enlarged holes in bladder-type anchor bolts is disclosed, suitable for measuring the depth and diameter of enlarged holes formed at the bottom of anchor holes. The device mainly comprises three parts: a handheld base 1, a diameter measuring mechanism, and a depth measuring mechanism mounted on the handheld base 1. The device measures the diameter of the enlarged hole through the diameter measuring mechanism and the depth of the enlarged hole through the depth measuring mechanism.

[0022] Specifically,

[0023] The aperture measuring mechanism includes a screw 2, a measuring seat 3, a movable seat 4, two first connecting rods 5, and two second connecting rods 6. The screw 2 is rotatably connected to the middle of the handheld seat 1 via bearings, and both the upper and lower ends of the screw 2 extend to the outside of the handheld seat 1. A rotating seat 11 for rotating the screw 2 is connected to the upper end of the screw 2, and the lower end of the screw 2 is rotatably connected to the measuring seat 3 via bearings. A positioning seat 13 (e.g., ...) is installed at the bottom of the measuring seat 3. Figure 4 (As shown). The movable seat 4 passes through the screw 2 and is threaded into the screw 2. One end of each of the two first connecting rods 5 is symmetrically hinged to the measuring seat 3 by a pin, and one end of each of the two second connecting rods 6 is symmetrically hinged to the movable seat 4 by a pin. The other ends of the two first connecting rods 5 are respectively hinged to the other ends of the two second connecting rods 6 by pins (as shown). Figure 2 As shown). In the initial state, the bending angle between the first link 5 and the second link 6 is small (as shown). Figure 1 As shown), when screw 2 is rotated, moving seat 4 moves, which in turn causes the hinge joints of the two first connecting rods 5 and the two second connecting rods 6 to bend (as shown). Figure 2 (As shown).

[0024] The hole depth measuring mechanism includes two slide rods 7 and two measuring rods 8. The two slide rods 7 are vertically and symmetrically slidably mounted on the handheld base 1, and are perpendicular to the installation positions of the two first connecting rods 5 and the two second connecting rods 6 (e.g., ...). Figure 1 (As shown). Two measuring rods 8 are horizontally fixed with pins. Pin holes are opened at the bottom of the two sliding rods 7, with the pins located within and able to rotate within the pin holes. Both ends of the pins extend outside the pin holes and are connected to gears 9. Symmetrical openings for vertical movement of the two sliding rods 7 are provided on the measuring base, and racks 10 are installed within these openings, meshing with the gears 9. A pull plate 12 is also installed at the upper end of the two sliding rods 7. Initially, the two measuring rods 8 are vertical. When the operator pulls the two sliding rods 7 vertically using the pull plate 12, the gears 9 rotate under the action of the racks 10, thus driving the measuring rods 8 to rotate. When the gears 9 disengage from the racks 10, the measuring rods 8 are perpendicular to the sliding rods 7, and a stop is provided at the bottom of the sliding rods 7 to prevent the measuring rods 8 from continuing to rotate under gravity (e.g., ...). Figure 4 (As shown).

[0025] Working principle of this utility model:

[0026] I. Overall Structure Overview

[0027] This measuring instrument mainly consists of three parts: a handheld base, a borehole diameter measuring mechanism, and a borehole depth measuring mechanism. It is suitable for measuring the borehole depth and diameter of enlarged holes at the bottom of anchor holes. The borehole diameter measuring mechanism achieves borehole diameter measurement through the expansion and contraction of a linkage mechanism, while the borehole depth measuring mechanism drives the measuring rod to rotate via a gear and rack transmission to determine the borehole depth. The two work together to complete the measurement of the enlarged borehole diameter and depth.

[0028] II. Working Principle of Aperture Measuring Mechanism

[0029] (I) Structural Composition

[0030] Power assembly: The screw 2 is rotatably connected to the handheld base 1 via a bearing. The upper end is equipped with a rotating base 11 for easy manual rotation. The lower end is rotatably connected to the measuring base 3, and the bottom is equipped with a positioning base 13 for positioning during measurement.

[0031] Transmission assembly: The movable seat 4 is threadedly engaged with the screw 2 and can move up and down along the screw; the two first connecting rods 5 and the second connecting rod 6 are respectively hinged to the measuring seat 3 and the movable seat 4, and the ends of the connecting rods are hinged to each other to form a four-bar linkage.

[0032] (II) Work Process

[0033] Initial state: The bending angle of the first link 5 and the second link 6 is small, and the overall mechanism is contracted (as shown in Figure 1), which makes it easier for the instrument to be inserted into the anchor hole.

[0034] Measurement process: Rotating the rotating seat 11 drives the screw 2 to rotate, and the moving seat 4 moves downward along the screw 2 due to the threaded transmission. At this time, the moving seat 4 pulls the second connecting rod 6, causing the hinge between the first connecting rod 5 and the second connecting rod 6 to unfold, driving the measuring end to expand towards the hole wall (as shown in Figure 2).

[0035] Hole diameter determination: When the measuring end contacts the wall of the enlarged hole, the operator encounters increased resistance when rotating screw 2, at which point the rotation of screw 2 is stopped. The specific number of rotations of screw 2 is recorded. After the device is removed from the anchor hole, screw 2 is rotated to the same number of rotations. The hole diameter of the enlarged hole is determined based on the unfolding range of the two first connecting rods 5 and the two second connecting rods 6.

[0036] III. Working Principle of Hole Depth Measurement Mechanism

[0037] (I) Structural Composition

[0038] Moving components: Two slide rods 7 are vertically and symmetrically slidably mounted on the handheld base 1, and their upper ends are connected by a pull plate 12 for easy synchronous pulling.

[0039] Transmission and measurement components: The measuring rod 8 is rotatably connected to the bottom end of the slide rod 7 via a pin, and the two ends of the pin extend and are connected to the gear 9; the measuring seat 3 has a rack 10 in the opening, which meshes with the gear 9 for transmission; the bottom of the slide rod 7 is provided with a stop to limit the rotation angle of the measuring rod 8.

[0040] (II) Work Process

[0041] Initial state: The measuring rod 8 and the sliding rod 7 are kept vertical (as shown in Figure 1). When the instrument is inserted into the anchor hole, it can fall vertically along the hole wall.

[0042] Measurement process: When the positioning seat 13 of the measuring seat 3 contacts the bottom of the enlarged hole, pull the pull plate 12 upward, causing the slide rod 7 to move vertically along the hand-held seat 1. At this time, the gear 9 rotates under the meshing action of the rack 10, causing the measuring rod 8 to rotate around the pin shaft (as shown in Figure 4).

[0043] Hole depth determination: When gear 9 disengages from rack 10, measuring rod 8 is perpendicular to slide rod 7 (restricted by a stop block). At this time, measuring rod 8 extends horizontally and is larger than the diameter of the anchor hole. By pulling slide rod 7 upward, measuring rod 8 is moved upward until it reaches the upper end of the enlarged hole. The operator stops moving slide rod 7 after being blocked by measuring rod 8. The upward distance of slide rod 7 is the hole depth of the enlarged hole.

[0044] IV. Collaborative Workflow

[0045] Instrument Insertion: Holding the handheld base 1, vertically insert the instrument into the anchor hole. The positioning base 13 descends along the main hole to the bottom of the enlarged hole, and the rivets on it are inserted into the bottom of the enlarged hole (e.g., ...). Figure 4 (As shown), the location of the fixing device.

[0046] Aperture measurement: Rotate the rotating seat 11 to unfold the measuring end through the screw-connecting rod mechanism until it contacts the enlarged hole wall and read the aperture data.

[0047] Hole depth measurement: Pull the lever 12, the slide bar-gear-rack mechanism drives the measuring rod 8 to unfold horizontally, read the slide bar displacement, and calculate the hole depth.

[0048] Data recording: Combine the measurement results of the aperture and depth to complete the recording of the enlarged hole size.

Claims

1. A measuring device for the depth and diameter of enlarged holes in a captive anchor bolt, comprising a handheld base (1), a diameter measuring mechanism and a depth measuring mechanism mounted on the handheld base (1), characterized in that, The aperture measuring mechanism includes a screw (2) that passes through the middle of the handheld base (1) and is rotatably connected to the handheld base (1), a measuring base (3) that is rotatably connected to the bottom end of the screw (2), a movable base (4) that is threadedly engaged with the screw (2), two first connecting rods (5) that are symmetrically hinged at one end to the measuring base (3), and two second connecting rods (6) that are symmetrically hinged at one end to the movable base (4); the other end of the first connecting rod (5) is hinged to the other end of the second connecting rod (6).

2. The measuring device as described in claim 1, characterized in that, The hole depth measuring mechanism includes two slide rods (7) that are vertically symmetrically slidably mounted on a handheld base (1), and two measuring rods (8) that are rotatably connected to the bottom ends of the two slide rods (7); the measuring rods (8) and the slide rods (7) are connected to gears (9) extending outward from the connection point; the measuring base (3) has symmetrical openings, and a rack (10) is provided in the openings; the rack (10) meshes with the gears (9).

3. The measuring device as described in claim 1, characterized in that, The upper end of the screw (2) is provided with a rotating seat (11).

4. The measuring device as described in claim 2, characterized in that, The upper ends of the two slide bars (7) are connected to a pull plate (12).

5. The measuring device as described in claim 1, characterized in that, The measuring seat (3) is provided with a positioning seat (13) at its bottom.

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