阅读说明：本技术 一种地下变截面孔洞测量工具 (Underground variable cross-section hole measuring tool ) 是由 熊俊青 刘文强 刘强 张帅 李士洋 于 2020-05-14 设计创作，主要内容包括：本发明公开一种地下变截面孔洞测量工具,包括底座和设置于底座上方的导向座,底座上方设置有竖直向上延伸的导向杆,导向座上设置有竖直的导向孔,导向杆伸入导向孔中并能够沿导向孔轴向竖直移动,还包括长度相等的上弦杆和下弦杆,上弦杆的上端铰接导向座,下弦杆的下端铰接底座,上弦杆的下端铰接下弦杆的上端,各铰接轴水平设置并相互平行,导向座上方连接有向上延伸的第一吊绳,底座上方连接有向上延伸的第二吊绳,第二吊绳相对于第一吊绳向上运动时,上弦杆和下弦杆相互靠近,两者的铰接处向外扩张并与孔洞内壁相抵。操作简单快捷,单人即可完成操作,测量结果准确,制作成本低廉。(The invention discloses an underground variable cross-section hole measuring tool which comprises a base and a guide seat arranged above the base, wherein a guide rod extending vertically and upwards is arranged above the base, a vertical guide hole is formed in the guide seat, the guide rod extends into the guide hole and can vertically move along the axial direction of the guide hole, the underground variable cross-section hole measuring tool further comprises an upper chord and a lower chord which are equal in length, the upper end of the upper chord is hinged with the guide seat, the lower end of the lower chord is hinged with the base, the lower end of the upper chord is hinged with the upper end of the lower chord, all hinged shafts are horizontally arranged and are parallel to each other, a first lifting rope extending upwards is connected above the guide seat, a second lifting rope extending upwards is connected above the base, when the second lifting rope moves upwards relative to the first lifting rope, the upper chord and the lower chord are close to each other, and the hinged position of the upper chord and the lower chord is expanded outwards. The operation is simple and quick, the operation can be finished by a single person, the measurement result is accurate, and the manufacturing cost is low.)

1. The underground variable cross-section hole measuring tool is characterized by comprising a base (1) and a guide seat arranged above the base (1), wherein a guide rod (2) extending vertically upwards is arranged above the base (1), a vertical guide hole is formed in the guide seat, the guide rod (2) extends into the guide hole and can move vertically along the axial direction of the guide hole, the underground variable cross-section hole measuring tool further comprises an upper chord (3) and a lower chord (4) which are equal in length, the upper end of the upper chord (3) is hinged with the guide seat, the lower end of the lower chord (4) is hinged with the base (1), the lower end of the upper chord (3) is hinged with the upper end of the lower chord (4), the upper ends are horizontally arranged and parallel to each other, a first lifting rope (5) extending upwards is connected above the guide seat, a second lifting rope (6) extending upwards is connected above the base (1), when the second lifting rope (6) moves upwards relative to the first lifting rope (5), the upper chord (3) and the lower chord (4) are close to each other, and the hinged part of the upper chord and the lower chord expands outwards and is abutted against the inner wall of the hole.

2. The underground variable cross-section hole measuring tool according to claim 1, wherein the guide seat comprises an upper connecting disc (7), a lower connecting disc (8) and a connecting rod (9) for connecting the upper connecting disc and the lower connecting disc (8), the guide hole is formed in the lower connecting disc (8), and the upper end of the upper chord (3) is hinged to the outer edge of the upper connecting disc (7).

3. An underground variable cross-section hole measuring tool according to claim 2, characterized by comprising a plurality of sets of said upper chord (3) and said lower chord (4), evenly arranged around said base (1).

4. An underground variable cross-section hole measuring tool according to claim 3, characterized in that the base (1) and the lower connecting disc (8) are disc-shaped, the upper connecting disc (7) is ring-shaped, and the second lifting rope (6) passes through the inner ring of the upper connecting disc (7).

5. An underground variable cross-section hole measuring tool according to claim 4, characterized in that each hinge axis is parallel to a tangent of the circumference of the lower connection disc (8).

6. An underground variable cross-section hole measuring tool according to claim 5, characterized in that the outer diameters of the upper connection disc (7), the lower connection disc (8) and the base (1) are the same.

7. An underground variable cross-section hole measuring tool according to claim 6, characterized by comprising four sets of the upper chord (3) and the lower chord (4), four connecting rods (9) being arranged at the circumferential edge of the lower connecting disc (8).

8. The underground variable cross-section hole measuring tool is characterized in that a first hanging ring connected with the first hanging rope (5) is arranged on the upper connecting disc (7), and a second hanging ring connected with the second hanging rope (6) is arranged at the upper end of the guide rod (2).

9. An underground variable cross-section hole measuring tool according to any one of claims 1 to 8, characterized in that the first lifting rope (5) is provided with a length scale.

10. An underground variable cross-section hole measuring tool according to claim 9, characterized by comprising two positioning clamps that clamp the first lifting rope (5) and the second lifting rope (6), respectively.

Technical Field

The invention relates to the field of measuring tools, in particular to an underground variable cross-section hole measuring tool.

Background

The anti-floating anchor rod is usually designed into an expanded head or adopts multi-stage reducing in an anchoring section of the anchor rod in a manner of expanding the anchor rod and the like so as to increase the anti-pulling bearing capacity. Specifically, the expanding anchor rod is a permanent anti-floating component for being driven into soil and is divided into a non-expanding section at the upper end and an expanding section at the tail end, the length of the non-expanding section at the upper end is long, the diameter of the expanding section at the tail end is short, and the diameter of the expanding section at the tail end is large, so that the expanding section with the diameter larger than that of the upper hole is drilled in a deep hole drilled during construction.

However, after the construction is completed, the existing tool can only measure the hole depth, and cannot accurately measure the effective aperture of the tail-end expansion body section, so that the risk of insufficient aperture exists in the expansion body section (variable cross-section), and the overall anti-pulling force of the anchor rod is further influenced.

At present, in the construction process, the hole diameter of the enlarged head part is determined only by construction experience, namely the drilling machine determines the drilling dead time for different soil layers by the construction experience so as to achieve the purpose of reaming. Because the reaming position is in underground depths, and downthehole different degrees have ponding, the final effect is irritated quantity as the evidence of turning over with prestressing force stretch-draw value or concrete reality and is based on, whether satisfy the designing requirement to reaming diameter and length, can't carry out the witnessed inspections, and this is unfavorable to improving engineering quality.

Therefore, how to provide a measuring tool capable of rapidly and accurately measuring the depth and the aperture of an underground variable cross-section hole is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide an underground variable cross-section hole measuring tool, which is convenient and quick to use, and accurate in result.

In order to solve the technical problems, the invention provides an underground variable cross-section hole measuring tool, which comprises a base and a guide seat arranged above the base, wherein a guide rod extending vertically and upwards is arranged above the base, a vertical guide hole is formed in the guide seat, the guide rod extends into the guide hole and can vertically move along the axial direction of the guide hole, the underground variable cross-section hole measuring tool also comprises an upper chord and a lower chord which are equal in length, the upper end of the upper chord is hinged with the guide seat, the lower end of the lower chord is hinged with the base, the lower end of the upper chord is hinged with the upper end of the lower chord, all hinged shafts are horizontally arranged and are parallel to each other, a first lifting rope extending upwards is connected above the guide seat, a second lifting rope extending upwards is connected above the base, and when the second lifting rope moves upwards relative to the first lifting rope, the upper chord and the lower chord are close to each other, the hinged part of the two parts expands outwards and is propped against the inner wall of the hole.

Preferably, the guide seat comprises an upper connecting disc, a lower connecting disc and a connecting rod for connecting the upper connecting disc and the lower connecting disc, the guide hole is formed in the lower connecting disc, and the upper end of the upper chord is hinged to the outer edge of the upper connecting disc.

Preferably, the upper chord and the lower chord are uniformly arranged around the base.

Preferably, the base and the lower connecting disc are disc-shaped, the upper connecting disc is annular, and the second lifting rope penetrates through an inner ring of the upper connecting disc.

Preferably, each hinge shaft is parallel to a tangent line of the circumference of the lower connection plate.

Preferably, the outer diameters of the upper connecting disc, the lower connecting disc and the base are the same.

Preferably, four groups of the upper chords and the lower chords are included, and four connecting rods are arranged on the circumferential edge of the lower connecting disc.

Preferably, the upper connecting disc is provided with a first hanging ring connected with the first lifting rope, and the upper end of the guide rod is provided with a second hanging ring connected with the second lifting rope.

Preferably, a length scale is arranged on the first lifting rope.

Preferably, two positioning clips are included for respectively gripping the first and second lifting cords.

The invention provides an underground variable cross-section hole measuring tool which comprises a base and a guide seat arranged above the base, wherein a guide rod extending vertically and upwards is arranged above the base, a vertical guide hole is formed in the guide seat, the guide rod extends into the guide hole and can vertically move along the axial direction of the guide hole, the underground variable cross-section hole measuring tool further comprises an upper chord and a lower chord which are equal in length, the upper end of the upper chord is hinged with the guide seat, the lower end of the lower chord is hinged with the base, the lower end of the upper chord is hinged with the upper end of the lower chord, all hinged shafts are horizontally arranged and are parallel to each other, a first lifting rope extending upwards is connected above the guide seat, a second lifting rope extending upwards is connected above the base, when the second lifting rope moves upwards relative to the first lifting rope, the upper chord and the lower chord are close to each other, and the hinged position of the upper chord and the lower chord is expanded outwards.

Transfer the instrument to the hole bottom through first lifting rope during the measurement, first lifting rope becomes lax state by the state of tightening, taut second lifting rope, the second lifting rope becomes the state of tightening by the state of loosening, and then drive the base for the guide holder upward movement, make upper chord member and lower chord member be close to each other, articulated department between them outwards expands and offsets with the hole inner wall, the guide bar further stretches into the guiding hole, the promotion length of second lifting rope is the shortening length of whole instrument promptly, simultaneously according to each pole length that has confirmed, utilize the pythagorean theorem to calculate and reachs the aperture, the length of stretching into the hole of first lifting rope is the hole depth promptly, and easy operation is swift, single can accomplish the operation, and the measuring result is accurate, and the cost of manufacture is low.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of an underground variable cross-section hole measurement tool provided by the present invention;

fig. 2 is a schematic diagram of a calculation method of an underground variable cross-section hole measurement tool according to an embodiment of the present invention.

Detailed Description

The core of the invention is to provide an underground variable cross-section hole measuring tool, after the tool is placed at a measuring position, the upper chord and the lower chord are expanded outwards by pulling the second lifting rope, the aperture is calculated according to the lifting length of the second lifting rope and the determined length of each rod, the tool is convenient and quick, and the result is accurate.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a measurement tool for underground variable cross-section holes according to the present invention; fig. 2 is a schematic diagram of a calculation method of an underground variable cross-section hole measurement tool according to an embodiment of the present invention.

The invention provides an underground variable cross-section hole measuring tool, which comprises a base 1 and a guide seat arranged above the base 1, wherein a guide rod 2 extending vertically and upwards is arranged above the base 1, a vertical guide hole is formed in the guide seat, the guide rod 2 extends into the guide hole and can vertically move along the axial direction of the guide hole, the underground variable cross-section hole measuring tool also comprises an upper chord 3 and a lower chord 4 which are equal in length, the upper end of the upper chord 3 is hinged with the guide seat, the lower end of the lower chord 4 is hinged with the base 1, the lower end of the upper chord 3 is hinged with the upper end of the lower chord 4, all hinged shafts are horizontally arranged and are parallel to each other, a first lifting rope 5 extending upwards is connected above the guide seat, a second lifting rope 6 extending upwards is connected above the base 1, when the second lifting rope 6 moves upwards relative to the first lifting rope 5, the upper chord 3 and the lower chord 4 are close to each other, and the hinged part of the upper chord and the lower chord expands outwards and is propped against the inner wall of the hole.

During measurement, the tool is placed to the bottom of the hole through the first lifting rope 5, the first lifting rope 5 is changed from a tight state to a loose state to indicate that the tool reaches a measurement position, the second lifting rope 6 is tensioned, the second lifting rope 6 is changed from the loose state to the tight state to further drive the base 1 to move upwards relative to the guide seat, the upper chord 3 and the lower chord 4 are close to each other, the hinged part of the upper chord and the lower chord is expanded outwards, the included angle between the two rods is reduced and is abutted against the inner wall of the hole, the guide rod 2 further extends into the guide hole, the lifting length of the second lifting rope 6 is the shortened length of the whole tool, the half of the original length of the tool minus the shortened length is a right-angle side of the right-angle triangle, the length of the upper chord 3 is the hypotenuse of the right-angle triangle, the length of the other right-angle side of the right-angle triangle box is calculated by utilizing the pythagorean theorem, the operation is simple and quick, the operation can be finished by a single person, the measurement result is accurate, and the manufacturing cost is low.

In order to further simplify the structure, the guide seat comprises an upper connecting disc 7, a lower connecting disc 8 and a connecting rod 9 for connecting the upper connecting disc and the lower connecting disc 8, a guide hole is formed in the lower connecting disc 8, and the upper end of the upper chord 3 is hinged to the outer edge of the upper connecting disc 7. The four connecting rods 9 are arranged at the circumferential edge of the lower connecting disc 8, and a sleeve structure can be adopted, or the number and arrangement mode of the connecting rods 9 can be adjusted, and the like, and the invention is within the protection scope.

In order to ensure the stable structure, a plurality of groups of upper chords 3 and lower chords 4 can be arranged and evenly arranged around the base 1. Specifically, four sets of upper chords 3 and lower chords 4 are provided, opposite to each other in pairs, and evenly arranged at intervals of 90 degrees.

In the underground variable cross-section hole measuring tool provided by the specific embodiment of the invention, the base 1 and the lower connecting disc 8 are disc-shaped, the upper connecting disc 7 is ring-shaped, the second lifting rope 6 penetrates through the inner ring of the upper connecting disc 7 to avoid interference, and a square structure can also be adopted.

Specifically, each articulated shaft is parallel to the tangent line of 8 circumferences of lower connection pads, makes the radial expansion of realization in the expansion process, and is more stable accurate. The hinged shafts are connected through pin shafts, the outer diameters of the upper connecting disc 7, the lower connecting disc 8 and the base 1 are the same, or the sizes of all the parts are adjusted according to conditions, and the invention is within the protection scope.

In order to stably connect the lifting ropes, a first hanging ring connected with the first lifting rope 5 is arranged on the upper connecting disc 7, a second hanging ring connected with the second lifting rope 6 is arranged at the upper end of the guide rod 2, and the hanging rings are required to be connected to the axis position as much as possible to keep the gravity center stable.

On the basis of the underground variable cross-section hole measuring tool provided by each specific embodiment, a length scale can be arranged on the first lifting rope 5, and the depth value can be quickly and visually obtained.

Two positioning clamps can also be provided, including clamping the first lifting rope 5 and the second lifting rope 6 respectively, so that the lifting length of the second lifting rope 6 can be obtained conveniently and quickly.

The underground variable cross-section hole measuring tool provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.