CN211012819U

CN211012819U - Crack three-dimensional relative displacement measuring device

Info

Publication number: CN211012819U
Application number: CN201921806669.4U
Authority: CN
Inventors: 王圣涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-14
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a crack three-dimensional relative displacement measuring device. The utility model discloses the device is including controlling the base, controlling the measuring block, and combination cantilever member. The left and right bases of the device are respectively fixed at two sides of the structural joint, and the length between the left and right bases is adjustable. The left base is provided with a left measuring block, the right base is connected with one end of the combined cantilever member, the other end of the combined cantilever member is connected with the right measuring block, and an inclined strut is arranged between the right base and the cantilever member. The combined cantilever member consists of two thin-wall rectangular pipes with different sizes, and one pipe with smaller section size can be retracted into the other rectangular pipe. And each baffle of the right measuring block is provided with a clamping groove. The left and right measuring blocks are formed by connecting three baffles in pairs, and the three baffles of the left measuring block and the three baffles of the right measuring block are opposite to each other in pairs in the left, right, front and back directions and the up and down directions to form X, Y and Z three-dimensional measuring surfaces, so that the measurement in the X, Y and Z directions is carried out. The cantilever members are adjustable in length and thus are suitable for use in a variety of different environments.

Description

Crack three-dimensional relative displacement measuring device

Technical Field

The utility model relates to an engineering survey field, concretely relates to crack three-dimensional relative displacement measuring device.

Background

Expansion joints are often arranged in the concrete structure design and construction process, and cracks are also generated in the structure use process due to various reasons. The deformation of these cracks is an important factor in the safety and stability of the structure. The accurate measurement of the deformation of the crack is of great significance to the maintenance of the structure.

Patent document CN206959828U discloses a three-dimensional relative displacement measuring device of structure movement joint includes displacement measurement piece, kicking block, displacement measurement piece and kicking block set up respectively in the both sides of structure movement joint, the displacement measurement piece includes the sensor of three measurement equidirectional, be provided with three spout on the kicking block, the sensor passes through the displacement measuring pole with the spout and is connected with the guide bar. When the structural crack takes place the displacement change, accessible sensor survey the relative displacement of first three-dimensional, but in this scheme, the displacement in certain direction can't be accurately surveyed to the sensor, and the crack warp in-process leads to the deformation of component easily, destroys, makes the device inefficacy.

The three-dimensional crack instrument disclosed in patent document CN102538623A includes three mutually perpendicular and fixed vernier calipers, two boxes and three mutually perpendicular baffles. When the crack changes, three vernier calipers interact with three baffles, and then the three-dimensional relative displacement of the crack is measured. However, the three vernier calipers in the patent are easy to influence each other along with the change of the crack, and the measurement accuracy is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a crack three-dimensional relative displacement measuring device. The device not only can utilize the point, and the face combines the location, measures the structure seam and changes at X, Y, the ascending displacement of Z three side, has simple structure moreover, and the simple operation's advantage can be installed in structure seam both sides to measure with slide caliper.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a crack three-direction relative displacement measuring device comprises a left base, a right base, a left measuring block, a right measuring block and a combined cantilever member, wherein the left measuring block is installed on the left base; the combined cantilever member consists of two thin-wall rectangular pipes with different sizes, and one pipe with a smaller section size can be retracted into the other rectangular pipe to realize the length adjustment of the combined cantilever member; the left measuring block and the right measuring block are formed by connecting three baffles in pairs, and the three baffles of the left measuring block and the three baffles of the right measuring block are opposite to each other in pairs in the left, right, front and back directions and the up and down directions to form X, Y and Z three-dimensional measuring surfaces, so that the measurement in the X, Y and Z directions can be carried out; and each baffle of the right measuring block is provided with a clamping groove, so that the baffles can be conveniently clamped by a vernier caliper for measurement.

In the above technical scheme, further, the left base is formed by welding angle steel and a bottom plate, and the angle steel is perpendicular to the bottom plate.

Further, the right base is formed by welding a cuboid component and a bottom plate, and the cuboid component is perpendicular to the bottom plate.

Furthermore, screw holes are uniformly distributed on two sides of the thin-wall rectangular tube and penetrate through the rectangular tube.

Furthermore, the left measuring block and the right measuring block are both made of materials which are not easy to deform, and the size of the baffle of the right measuring block is smaller than that of the baffle of the left measuring block.

Further, each part of the device is made of steel.

The utility model discloses an among the device, the base provides the fixed stay to left base is as the mount. A plurality of bolt holes are respectively arranged in the middle positions of two sides of the angle steel from bottom to top in the vertical direction at intervals of 2cm, and the distance between the circle center of the upper bolt hole and the upper edge of the angle steel is 2 cm. Fixed through different screw, the fixed height of adjustable left side survey piece. The right base is formed by fixing a bottom plate and a cuboid fixing component, and a groove is formed in the upper portion of the cuboid fixing component. The thickness of two side walls is 2mm, two screw holes are respectively arranged on two sides of the two side walls, the screw holes are horizontally arranged at a distance of 1cm, the distance between the center of the circle and the left edge and the right edge is 1cm, and the distance between the center of the circle and the top end is 2 cm. The left base bottom plate and the right base bottom plate are both rectangular steel plates.

The great rectangular pipe left side in cross-section is equipped with 7 screws, and the interval is 5cm, and the right side is equipped with 2 screws, interval 1 cm. The rectangular pipe with the smaller cross section is provided with 7 screw holes with the distance of 5 cm. Through the screw holes with the same distance on the right side, the length of the cantilever member can be adjusted, and the cantilever member is suitable for installation conditions of different sites.

The two ends of the inclined strut are respectively fixed with the right base and the cantilever member by two bolts, so that the stability of the cantilever member is ensured, and the measurement precision is ensured.

The utility model discloses a measuring method of crack three-dimensional relative displacement measuring device, including following step:

and step 1, taking the expansion joint or the crack as a reference, and fixing the left base and the right base at two sides of the expansion joint or the crack respectively so as to realize the fixation of the device. And a left measuring block is arranged on the left base, one end of the combined cantilever member is connected with the right base, and the other end of the combined cantilever member is connected with the right measuring block. And recording three baffles of the left measuring block as an X surface, a Y surface and a Z surface respectively, recording three baffles of the right measuring block as an X surface, a Y surface and a Z surface respectively, and starting to measure.

And 2, clamping the outer claw of the vernier caliper through the clamping groove, and measuring the distances among the corresponding baffles, namely X, Y and Z values respectively.

And 3, calculating the difference between the measured data and the initial value, wherein the difference is the relative displacement of the two sides of the expansion joint.

The beneficial effects of the utility model reside in that:

the utility model discloses the device has simple structure, installs convenient advantage. Just the utility model discloses the cost of device is lower, and measurement accuracy is higher, and the device volume is less, is applicable to various different environment. The method is suitable for long-term measurement of the deformation of the expansion joint and the crack of the structure in the construction process or in the use state, and the deformation characteristics of the expansion joint and the crack in one direction, two directions and three directions are obtained.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

fig. 1 is a schematic structural view of a crack three-dimensional relative displacement measuring device of the present invention;

fig. 2 is a front view of the three-dimensional relative displacement measuring device for cracks of the present invention;

fig. 3 is a side view of the three-dimensional relative displacement measuring device for cracks of the present invention;

fig. 4 is a three-dimensional view of the fixing frame 2;

fig. 5 is a three-dimensional view of the fixing frame 1;

FIG. 6: is a structural schematic diagram of a disassembly state of the cantilever member;

wherein, the reference numeral 1 is a left base, 2 is a right base, 3 is a left measuring block, 4 is a right measuring block, 5 is a thin-wall rectangular pipe A, 6 is a thin-wall rectangular pipe B, and 7 is an inclined strut.

Detailed Description

The present invention will be further described with reference to the accompanying drawings so that those skilled in the art can better understand the present invention and can implement the same.

The utility model discloses use two sets of measuring blocks to have the projection of mutual overlapping as the prerequisite in X, Y, Z three orientation.

Fig. 1 shows a schematic structural diagram of a three-dimensional relative displacement measuring device for a crack according to the present invention. The device comprises left and

right bases

1 and 2, two groups of

measuring blocks

3 and 4, thin-wall

rectangular pipes

5 and 6, inclined struts 7 and screws/settlement nails 8.

Fig. 2 and 3 are a front view and a side view of a three-way displacement measuring device according to the present invention. With the expansion joint as a reference, the

base plates

1 and 2 are respectively fixed at two sides of the expansion joint by using 4 sedimentation nails 8. The left base 1 uses a screw to fix the left measuring block 3 through screw holes reserved on two sides of the angle steel. The fixed height of the measuring block 3 can be adjusted according to the requirements and the field conditions.

The right end of the rectangular thin-wall pipe 5 is placed into a groove at the top end of the right base 2 and fixed by using screws. The thin-wall rectangular tube 6 can be retracted into the thin-wall rectangular tube 5 to realize length adjustment. The left end of the thin-wall rectangular tube 6 is connected with the right measuring block 4 through a screw. One end of the inclined strut 7 is fixed on the right base 2, and the other end of the inclined strut is fixed at the bottom of the thin-wall rectangular pipe, so that the stable structure is ensured.

The left and

right measuring blocks

3 and 4 are respectively provided with three baffles, and the three baffles are connected in pairs. Meanwhile, the six baffles correspond to each other in three directions and have mutually overlapped projections, and the right measuring block 4 is provided with a clamping groove at the specific position of the baffle, so that the vernier caliper can be conveniently used for clamping the baffle to measure.

The utility model discloses an among the device, the base provides the fixed stay to left base is as the mount. A plurality of bolt holes are respectively arranged in the middle positions of two sides of the angle steel from bottom to top in the vertical direction at intervals of 2cm, and the distance between the circle center of the upper bolt hole and the upper edge of the angle steel is 2 cm. Fixed height of the left measuring block can be adjusted by fixing through different bolt holes. The right base is formed by fixing a bottom plate and a cuboid fixing component, and a groove is formed in the upper portion of the cuboid fixing component. The thickness of two side walls is 2mm, two screw holes are respectively arranged on two sides of the two side walls, the screw holes are horizontally arranged at a distance of 1cm, the distance between the center of the circle and the left edge and the right edge is 1cm, and the distance between the center of the circle and the top end is 2 cm. The left base bottom plate and the right base bottom plate are both rectangular steel plates.

The two ends of the inclined strut are respectively fixed with the right base and the cantilever member by two bolts, so that the stability of the cantilever member is ensured, and the measurement precision is ensured. The right measuring block is provided with a clamping groove at the specific position of the baffle, and the point and the surface are combined and positioned, so that the vernier caliper can conveniently measure.

The device is used for measurement, and the specific method is as follows:

1) the expansion joint is used as a reference, and the left and

right bases

1 and 2 are respectively fixed at two sides of the expansion joint by using the settlement nails, so that the device is fixed. And recording three baffles of the left measuring block 3 as an X surface, a Y surface and a Z surface respectively, and recording three baffles of the right measuring block 4 as an X surface, a Y surface and a Z surface respectively, and starting to measure.

2) The outer claw of the vernier caliper is clamped by the clamping groove, and the distances between the corresponding baffles are measured and are respectively X, Y and Z values.

3) And calculating the difference between the measured data and the initial value, wherein the difference is the relative displacement of the two sides of the expansion joint.

By adopting the technical scheme, the method has the following advantages and positive effects: the utility model has simple structure, higher measuring precision and low cost, can be used for measuring the expansion joint, crack and the like of the structure, and is suitable for measuring the one-way, two-way and three-way relative displacement and deformation characteristics of the two sides of the expansion joint in the construction process or in a long-term use state of the structure; the device is small in size and high in applicability to different environments.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A crack three-way relative displacement measuring device is characterized by comprising a left base (1), a right base (2), a left measuring block (3), a right measuring block (4) and a combined cantilever member, wherein the left measuring block (3) is installed on the left base (1), the right base (2) is connected with one end of the combined cantilever member, the other end of the combined cantilever member is connected with the right measuring block (4), an inclined strut (7) is further arranged between the right base (2) and the combined cantilever member, the combined cantilever member consists of two thin-wall rectangular pipes with different sizes, and one small cross-section size can be retracted into the other rectangular pipe; the left measuring block (3) and the right measuring block (4) are formed by connecting three baffles in pairs, and the three baffles of the left measuring block (3) and the three baffles of the right measuring block (4) are opposite to each other in the left-right direction, the front-back direction and the up-down direction; and each baffle of the right measuring block (4) is provided with a clamping groove.

2. A crack three-way relative displacement measuring device according to claim 1, characterized in that the left base (1) is formed by welding angle steel and a bottom plate, and the angle steel is perpendicular to the bottom plate.

3. A crack three-way relative displacement measuring device according to claim 1, characterized in that the right base (2) is formed by welding a rectangular parallelepiped member and a bottom plate, and the rectangular parallelepiped member is perpendicular to the bottom plate.

4. The device for measuring three-dimensional relative displacement of cracks as claimed in claim 1, wherein the thin-walled rectangular tube has screw holes uniformly distributed on both sides thereof, and the screw holes penetrate through the rectangular tube.

5. The crack three-way relative displacement measuring device as claimed in claim 1, wherein the left measuring block (3) and the right measuring block (4) are made of materials which are not easy to deform, and the size of the baffle of the right measuring block is smaller than that of the baffle of the left measuring block.

6. A fracture three-dimensional relative displacement measuring device as claimed in claim 1, wherein each portion of said device is made of steel.