CN220690059U - Auxiliary tool of comprehensive crack testing instrument - Google Patents

Abstract

The utility model is suitable for the technical field of concrete crack detection, and provides an auxiliary tool of a crack comprehensive testing instrument, which comprises the following components: a handle, left and right arms attached to the handle, a left ring clip attached to the left arm, and a right ring clip attached to the right arm; the handle is divided into an upper half part and a lower half part, and the upper half part and the lower half part are connected into a whole; the upper surface of the outer side of the upper half part of the handle is provided with a first brake button, a centering pointer and a clamping groove with an isosceles trapezoid cross section shape in the inner space. The crack comprehensive testing instrument auxiliary tool provided by the scheme can conveniently adjust the distance between the probes at each measuring point when the crack comprehensive testing instrument is used for measuring the cracks on the vertical surface or the inclined surface of the concrete, and the probes can be clung to the surface of a measured object by one hand, so that human resources are saved.

Description

Auxiliary tool of comprehensive crack testing instrument

Technical Field

The utility model belongs to the technical field of concrete crack detection, and particularly relates to an auxiliary tool of a crack comprehensive testing instrument.

Background

In the past, the state detection in the engineering operation process is an important link in the implementation process of the hydraulic and hydroelectric engineering project, and the link also promotes various detection means. The instrument can detect the depth and the width of a concrete crack, and when in measurement, a host computer is only required to be connected with probes, then a pair of probes are respectively spanned on two sides of the width direction of the crack, the probes are tightly attached to a working plane as required, finally, the host computer is only required to pay attention to measuring signals, and a measured value can be obtained after the signals are stable, so that first hand data is provided for detecting the running state in actual engineering. The instrument has wide application, high measurement precision and high reference value of measurement results in practical application.

However, during the actual use of the comprehensive fracture testing instrument, some problems are still encountered in operation: first, conventional measurement operations are performed using the instrument, and since the probe spacing must be determined, the probe center distance must be determined using a scale, while the probe must be held against the work surface, which is obviously easy to achieve in a horizontal plane. However, in practical situations, the measurement operation is sometimes performed on the vertical plane or the inclined plane crack, which is actually unfavorable for the stability of the measurement signal, the progress of the measurement operation and the measurement accuracy, and in other situations, the measurement of each measuring point needs to be performed at different probe intervals, which increases the difficulty for the practical operation, so that the applicability of the conventional measurement operation still has room for improvement. Secondly, the probe needs to be tightly attached to the working surface and kept stable in the measuring process so that the measuring instrument can easily receive stable measuring signals, and therefore, during actual measurement, the probe needs to be pressed by hands respectively, so that contradiction is generated between the manual operation and the operation of the instrument end, which means that additional manpower is needed for operating the instrument end, and obviously, the instrument with a simple operation flow cannot embody the characteristics, and consumes one time of manpower resources.

Disclosure of Invention

In order to solve the technical problems that when a crack comprehensive test instrument is used for measuring cracks on a vertical plane or an inclined plane of concrete, the distance between probes needs to be measured at each measuring point, the operation is troublesome, the probes need to be pressed by hands respectively, an instrument host needs to be controlled, and the labor is consumed.

The utility model is realized in such a way that an auxiliary tool of a comprehensive crack testing instrument comprises: a handle, left and right arms attached to the handle, a left ring clip attached to the left arm, and a right ring clip attached to the right arm; the handle is divided into an upper half part and a lower half part, and the upper half part and the lower half part are connected into a whole; the upper surface of the outer side of the upper half part of the handle is provided with a first brake button, a centering pointer and a clamping groove with an isosceles trapezoid cross section shape in the inner space; the front face of the handle is provided with a second brake button which is completely consistent with the first brake button.

Preferably, the clamping groove does not penetrate through the upper half part of the handle, the clamping groove is mutually embedded with the lower half part of the centering pointer, the clamping groove provides a space for the centering pointer to slide left and right in the clamping groove without in-situ rotation, and the centering pointer is installed and removed from the rectangular hole at the left end of the clamping groove.

Preferably, the upper half part of the handle is connected with the lower half part of the handle through vertical bolts, and reserved hole sites of partial bolts for connecting the handle are distributed on the edges of the upper half part of the handle and the lower half part of the handle.

Preferably, the hole depth of the mounting hole position of the first brake button penetrates through the upper surface of the upper half part of the handle to reach the inside of the handle, and the first brake button is pressed to be extruded onto the corresponding hole position of the upper half part of the handle; the mounting hole site of the second brake button penetrates through the surface of the handle to reach the inside, and the second brake button is mounted by pressing to be extruded to the corresponding hole site.

Preferably, a protrusion is arranged at the central part of the lower half part of the handle, a groove is arranged at the right end of the protrusion, the size of the groove and the protrusion are embedded with the right arm and the left arm, the front and back displacement of the left arm and the right arm can not be caused, two bolt holes are respectively arranged on the upper surfaces of the protrusion and the groove, and bolts are screwed into the bolt holes through the penetrating grooves of the left arm and the right arm, so that the left arm and the right arm are respectively connected with the lower half part of the handle.

Preferably, the outer side of the left annular clamp is a left rigid annular clamp shell, a pair of short columns are symmetrically arranged on the outer side of the left rigid annular clamp shell, the short columns are connected with the left rigid annular clamp shell into a whole, penetrating bolt hole sites are formed in two ends of the left rigid annular clamp shell, and a left knob bolt is arranged in the bolt hole sites in an internal thread mode;

similarly, the outer side of the right annular clamp is a right rigid annular clamp shell, a pair of short columns are symmetrically arranged on the outer side of the right rigid annular clamp shell, the short columns are connected with the right rigid annular clamp shell into a whole, penetrating bolt hole sites are also formed in two ends of the right rigid annular clamp shell, and a right knob bolt is installed in the bolt hole sites through internal threads.

Preferably, the bifurcated ends of the left arm and the right arm are provided with two opposite hole sites, and the short column is installed in the hole sites.

Preferably, scale marks are marked beside the clamping groove on the handle and used for centering the left arm and the right arm with the crack to be detected during the cooperation operation, scale marks are arranged on the upper surfaces of the left arm and the right arm, and the scale marks of the left arm are longer than those of the right arm.

Preferably, the left side ring clamp and the right side ring clamp inboard is equipped with left flexible liner and right flexible liner respectively, left side flexible liner and right flexible liner all adopt the rubber material left side knob bolt, right knob bolt all divide into bolt, knob two parts, left side knob bolt, right knob bolt's bolt cap part and knob part shape are oval wherein, and the minor face of knob is longer than the minor face of bolt cap, and the oval minor face of knob slightly is greater than the external diameter of bolt shaft, and keep somewhere the penetrability bolt hole at the interior with the knob rotation plane parallel, the outside surface, this bolt hole centre of a circle is unanimous with oval centre of a circle, and the minor face of bolt cap equals the bolt shaft external diameter.

Preferably, a first brake button and a second brake button on the handle penetrate through the handle to the inside, wherein the first brake button is used for braking the right arm and the left arm respectively when being kept in a pressed state, and the second brake button is used for braking the left arm when being kept in a pressed state.

Compared with the related art, the auxiliary tool of the comprehensive crack testing instrument provided by the utility model has the following beneficial effects:

(1) The utility model adopts an integrated design, and after the auxiliary tool is adopted by the probe of the crack comprehensive testing instrument, the probe and the graduated scale are integrated under the action of the auxiliary tool, so that the operation of probe interval control in actual measurement is more convenient than that in the traditional mode, and the measurement operation efficiency is enhanced;

(2) According to the utility model, two probes are clamped at two ends of the auxiliary tool, so that a single-hand operation scheme is provided for the probes to cross the crack and press close to the operation surface in the actual measurement process, the situation that two persons operate one instrument to press the two probes in the traditional measurement process is eliminated, the purposes of pressing the probes and operating the instrument can be achieved, and the manpower resource is saved;

(3) The utility model aims at improving the operation method of the probe operation part, the auxiliary tool optimizes the traditional mode of operating the probe, realizes the possibility of flexibly operating the probe by one hand, ensures that the measurement of the crack of the proper working surface in any direction is easier than the traditional mode, effectively prevents the situation that an operator cannot spread when measuring the special surface such as vertical, inclined and the like in the traditional operation process, and avoids the situations of inaccurate measurement result and slow measurement operation progress caused by the poor operation mode and method of the probe.

Drawings

FIG. 1 is a schematic view of the overall structure of the utility model in an extended state;

FIG. 2 is a schematic view of the overall structure of the present utility model in a contracted state;

FIG. 3 is a schematic view of the upper half of the handle of the present utility model;

FIG. 4 is a bottom view of the upper half of the handle and a cross-sectional view of the positions A-A and B-B of the present utility model;

FIG. 5 is a top view of the upper half of the handle and a cross-sectional view of the C-C, D-D position of the present utility model;

FIG. 6 is a schematic view of the lower handle half of the present utility model;

FIG. 7 is a top view of the lower handle half and a cross-sectional view of the position E-E, F-F, G-G of the present utility model;

FIG. 8 is a schematic view of the overall structure of the left arm link left ring clamp of the present utility model;

FIG. 9 is a schematic view of the overall construction of the right arm link right ring clamp of the present utility model;

FIG. 10 is a schematic view of the overall construction of the left and right ring binders of the present utility model;

FIG. 11 is an overall schematic of a brake button of the present utility model;

FIG. 12 is a cross-sectional view of a brake button of the present utility model;

FIG. 13 is a schematic view of the overall structure of the centering pointer in the present utility model;

fig. 14 is a schematic diagram of the front view of the centering pointer in the present utility model.

Reference numerals: 1. a handle; 2. a left arm; 3. a right arm; 4. a left ring clamp; 5. a right ring clamp; 101. the upper half of the handle; 102. the lower half of the handle; 103. a first brake button; 104. centering the pointer; 105. a second brake button; 106. a clamping groove; 401. a left flexible liner; 402. a left rigid annular shell; 403. a left knob bolt; 501. a right flexible liner; 502. a right rigid annular shell; 503. a right knob bolt.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model provides an auxiliary tool of a comprehensive fracture testing instrument, as shown in fig. 1-14, comprising: a handle 1, a left arm 2 and a right arm 3 connected to the handle 1, a left ring clamp 4 connected to the left arm 2, and a right ring clamp 5 connected to the right arm 3; the handle 1 is divided into an upper handle half 101 and a lower handle half 102, and the upper handle half 101 and the lower handle half 102 are connected into a whole; the outer upper surface of the upper half part 101 of the handle is provided with a first brake button 103, a centering pointer 104 and a clamping groove 106 with an isosceles trapezoid cross section shape in the inner space; the front face of the handle 1 is provided with a second brake button 105 which is completely identical to the first brake button 103, and the first brake button 103 is different from the second brake button 105 in that: the hole sites of the first brake button 103 are all arranged on the upper half part 101 of the handle, and the hole sites of the second brake button 105 are respectively distributed on the upper half part 101 of the handle and the lower half part 102 of the handle.

In the detection of concrete cracks using a crack integration test instrument, the probe spacing must be determined, and the instrument probe must be abutted against the working surface, so that the center distance of the probe must be determined by a graduated scale, and the probe must be held to be abutted against the working surface. However, in practice, a measurement operation is sometimes performed on a vertical or inclined surface crack, which may be problematic in operation: in these cases, the operation is actually unfavorable for the stability of measurement signals, the progress of measurement operation and the measurement accuracy, and in other cases, the measurement of different probe intervals is needed for each measuring point, thus increasing the difficulty for actual operation; secondly, in the measuring process, the probe needs to be tightly attached to the working surface and kept stable, so that the measuring instrument can easily receive stable measuring signals, and therefore, in the actual measurement, the probe needs to be pressed by both hands manually, which means that additional manpower is needed to operate the instrument host, and obviously, the instrument with a simple operation flow cannot embody the characteristic at the moment and consumes one time of manpower resources.

In the scheme, through installing two probes on left ring clamp 4 and right ring clamp 5 to through adjusting the distance of two left ring clamps 4 and right ring clamp 5, realize the regulation to the distance between two probes, it is comparatively simple and convenient to adjust, and holds handle 1 through the single hand, can paste the probe and be surveyed the thing surface, even make measuring signal stable, be favorable to measuring operation progress and measurement accuracy, the instrument host computer is controlled to the convenient use other hand again, thereby saves manpower resources, saves the cost of labor.

In a further preferred embodiment of the present utility model, the clamping groove 106 does not penetrate through the upper half 101 of the handle, the clamping groove 106 is engaged with the lower half of the centering pointer 104, the clamping groove 106 provides a space for the centering pointer 104 to slide left and right inside the clamping groove 106 without in-situ rotation, and the centering pointer 104 is mounted and dismounted from the rectangular hole at the left end of the clamping groove 106.

In this embodiment, the distance between the two probes after adjustment is accurately indicated by the centering pointer 104 in cooperation with the graduation marks.

In a further preferred embodiment of the present utility model, the upper handle half 101 and the lower handle half 102 are connected by vertical bolts, and the reserved holes for the partial bolts connecting the handle 1 are distributed on the edges of the upper handle half 101 and the lower handle half 102.

In the present embodiment, the upper handle half 101 and the lower handle half 102 are fixed by being mounted in the reserved hole sites of the bolts of the upper handle half 101 and the lower handle half 102.

In a further preferred embodiment of the present utility model, the hole depth of the mounting hole of the first brake button 103 penetrates through the upper surface of the upper half portion 101 of the handle to reach the inside of the handle 1, and the first brake button 103 is pressed to be pressed onto the corresponding hole of the upper half portion 101 of the handle; the mounting hole of the second brake button 105 penetrates through the surface of the handle 1 to the inside, and the second brake button 105 is mounted by pressing to be pressed to the corresponding hole.

In this embodiment, the upper handle half 101 and the lower handle half 102 are each mounted in the corresponding hole site by pressing, and are held stable by the pressing force between the upper handle half 101 and the lower handle half 102 and the hole site.

In a further preferred embodiment of the present utility model, the lower handle half 102 is a portion actually connected to the left arm 2 and the right arm 3, a protrusion is provided at a central portion of the lower handle half 102, a groove is provided at a right end of the protrusion, the size of the groove and the protrusion are engaged with those of the right arm 3 and the left arm 2, and they do not cause forward and backward displacement of the left arm 2 and the right arm 3, two bolt holes are provided on an upper surface of the protrusion and the groove, and a bolt is screwed into the bolt hole through the penetrating grooves of the left arm 2 and the right arm 3 to connect the left arm 2 and the right arm 3 with the lower handle half 102, respectively.

In this embodiment, the bolt is sleeved with a rigid spacer with an outer diameter larger than the width of the clamping groove 106 and smaller than the width of the protrusion or the groove, and an inner diameter larger than the outer diameter of the bolt and smaller than the outer diameter of the bolt cap, and the extent to which the bolt is screwed into the corresponding hole site is suitable for the left arm 2 and the right arm 3 to be capable of sliding in a telescopic manner and for no obvious vertical displacement when being acted vertically.

In a further preferred embodiment of the present utility model, the outer side of the left ring-shaped clamp 4 is a left rigid ring-shaped clamp shell 402, a pair of short columns are symmetrically arranged on the outer side of the left rigid ring-shaped clamp shell 402, the short columns are integrally connected with the left rigid ring-shaped clamp shell 402, two ends of the left rigid ring-shaped clamp shell 402 are provided with penetrating bolt hole sites, and a left knob bolt 403 is installed in the bolt hole sites in a threaded manner;

similarly, the outer side of the right annular clamp 5 is a right rigid annular clamp shell 502, a pair of short columns are symmetrically arranged on the outer side of the right rigid annular clamp shell 502, the short columns are integrally connected with the right rigid annular clamp shell 502, penetrating bolt hole sites are also arranged at two ends of the right rigid annular clamp shell 502, and a right knob bolt 503 is installed in the bolt hole site through threads.

In this embodiment, the degree of clamping of the left rigid annular clamp shell 402 can be adjusted by rotation of the left knob bolt 403; the inner side of the rigid annular clamp shell is provided with a left flexible liner 401 which is the only part directly contacted with the crack comprehensive testing instrument in the actual use process, and the left flexible liner 401 is adhered to the inner surface of the left rigid annular clamp shell 402;

the left and right ring clamps 4, 5 are identical in construction and connection and operation, and only the left ring clamp 4 will be described herein in relation to its operation.

In a further preferred embodiment of the present utility model, the bifurcated ends of the left arm 2 and the right arm 3 are provided with two opposite holes, and the short posts are installed in the holes.

In this embodiment, in a state that the end of the left ring clamp 4 is pressed close by rotating the left knob bolt 403, the short columns on the outer side of the left ring clamp 4 can be aligned with the hole sites on the two ends, then the left knob bolt 403 is loosened, the connection between the left ring clamp 4 and the left arm 2 can be realized, the connection is a movable connection, the left ring clamp 4 can rotate by a small margin, the amplitude of the connection is limited by the branching position of the branching end part of the left arm 2 and the height of the left rigid ring clamp shell 402, the construction and the connection mode and the working mode of the left ring clamp 4 and the right ring clamp 5 are completely consistent, in the same way, the short columns on the outer side of the right ring clamp 5 can be aligned with the hole sites on the two ends in a state that the end of the right ring clamp 5 is pressed close by rotating the right knob bolt 503, then the connection between the right ring clamp 5 and the right arm 3 can be realized by loosening the right knob bolt 503, the connection is a movable connection, and the right ring clamp 5 can rotate by a small margin, and the amplitude of the branching position of the branching end part of the right arm 3 and the height of the right rigid ring clamp shell 502.

In a further preferred embodiment of the present utility model, graduation marks are marked beside the clamping groove 106 on the handle 1, and are used for centering the left arm 2 and the right arm 3 with the crack to be tested during the cooperation operation, graduation marks are arranged on the upper surfaces of the left arm 2 and the right arm 3, and the graduation marks of the left arm 2 are longer than the graduation marks of the right arm 3, i.e. the extension range of the left arm 2 is larger than that of the right arm 3.

In this embodiment, the distance between the two probes after adjustment is accurately indicated by the cooperation of the scaleable mark and the centering pointer 104, without using a ruler for measurement, so that adjustment is convenient.

In a further preferred embodiment of the present utility model, the inner sides of the left ring clamp 4 and the right ring clamp 5 are respectively provided with a left flexible gasket 401 and a right flexible gasket 501, the left flexible gasket 401 and the right flexible gasket 501 are made of rubber materials, the left knob bolt 403 and the right knob bolt 503 are respectively divided into a bolt and a knob, and the bolt cap parts and the knob parts of the left knob bolt 403 and the right knob bolt 503 are respectively elliptical, so that the tightness of the clamp can be easily and manually adjusted; the short side of the knob is longer than the short side of the bolt cap, the knob and the long oval side of the bolt cap can rotate at 360 degrees on the plane after penetrating into the bolt by the knob, the oval short side of the knob is slightly larger than the outer diameter of the bolt shaft (the outer diameter is the same as that of the outer side of the thread), penetrating bolt holes are reserved on the inner surface and the outer surface which are parallel to the rotation plane of the knob, the circle center of the bolt holes is consistent with the circle center of the oval, the edge of the hole position is at a proper distance with the edge of the outer side of the knob, and the short side of the bolt cap is equal to the outer diameter of the bolt shaft.

In this embodiment, when the left knob bolt 403 and the right knob bolt 503 are screwed, the left flexible pad 401 and the right flexible pad 501 can better contact with the joint detector portion, and can provide a friction force perpendicular to the plane of the crack, so that the normal operation is ensured, and the probe is protected.

In a further preferred embodiment of the present utility model, the first brake button 103 and the second brake button 105 on the handle 1 extend through the handle 1 to the inside, wherein the first brake button 103 brakes the right arm 3 and the left arm 2 within a certain range when kept in a pressed state, the first brake button 103 contacts with the upper surface of the left arm 2 or the right arm 3 when used for braking, and the second brake button 105 brakes the left arm 2 when kept in a pressed state, and the second brake button 105 contacts with the front surface of the left arm 2 when kept in a braked state.

In this embodiment, after the first brake button 103 and the second brake button 105 are pressed by force, the brake buttons are brought into close contact with the upper surface of the left arm 2 and the upper surface of the right arm 3, so that a braking effect is generated, and after the force is removed, the first brake button 103 and the second brake button 105 rebound to the original state, and at this time, the braking state is released.

The auxiliary tool of the comprehensive crack testing instrument performs auxiliary crack testing operation, which can be summarized in five steps of installation, sliding, centering and measurement, and is specifically as follows:

s1, mounting:

before the auxiliary tool is used for measurement, preparation work is carried out, namely the auxiliary tool and two probe transducers (called probes) in a crack testing instrument are respectively in contact connection with a left annular clamp 4 and a right annular clamp 5 of the tool, namely the probes are put into the annular clamps, the left annular clamp 4 and the right annular clamp 5 are arranged in the lower middle parts of the two probes, and then a left knob bolt 403 and a right knob bolt 503 are screwed down, so that the preparation work before the measurement work is completed;

s2, sliding:

after the preparation work before is finished, the auxiliary tool can be used for auxiliary measurement of the crack depth, the measurement operation of the point location is generally carried out three times, then the instrument obtains the final result, before the point location measurement, the stepping quantity is manually set in the instrument, namely, the probe spacing in each measurement is an arithmetic series taking the stepping quantity as a number difference, the left arm 2 and the right arm 3 are firstly slid to the needed scale before the measurement, and the probe spacing is ensured to meet the measurement requirement;

s3, centering:

after the first two steps are completed, the centering pointer 104 should be slid to the middle position of the distance between the two probes, and after the middle position is confirmed, the centering step is completed only by holding the handle 1 and simultaneously pressing the first brake button 103 and the second brake button 105 to enable the left arm 2 and the right arm 3 to be in a braking state;

s4, centering:

in the next step, two probes are spanned on two sides of the measuring point through the auxiliary tool, and the handle 1 is moved to enable the centering pointer 104 and the measuring point to be on the same sight line, and the sight line is perpendicular to the upper surface of the handle 1;

s5, measuring:

after the last step is completed, the measurement can be started, the handles 1 are pressed to enable the probes at the two ends of the handles to be closely attached to the working surface near the measuring point in the measurement process (the measurement belongs to the operation scope of the instrument part and is not described here), so that a complete auxiliary tool operation flow is completed, and four steps S2 to S5 are repeated when the re-measurement of the probe spacing is changed.

Compared with the related art, in the scheme, the probe of the crack comprehensive testing instrument is temporarily arranged in the auxiliary tool, scales are marked on the auxiliary tool, and the auxiliary tool is only required to be operated in advance to adjust the distance during measurement; in actual use, the auxiliary tool is held by one hand and the handle 1 is pressed to the measuring surface, so that the utility model can achieve the aims of pressing the probe and operating the instrument without errors and save human resources.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or communication connection shown or discussed as being between each other may be an indirect coupling or communication connection between devices or elements via some interfaces, which may be in the form of telecommunications or otherwise.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (10)

1. An auxiliary tool for a comprehensive crack testing instrument, which is characterized by comprising:

a handle (1), a left arm (2) and a right arm (3) connected to the handle (1), a left ring clamp (4) connected to the left arm (2) and a right ring clamp (5) connected to the right arm (3);

the handle (1) is divided into a handle upper half part (101) and a handle lower half part (102), and the handle upper half part (101) and the handle lower half part (102) are connected into a whole;

the upper surface of the outer side of the upper half part (101) of the handle is provided with a first brake button (103), a centering pointer (104) and a clamping groove (106) with an isosceles trapezoid cross section shape in the inner space;

a second brake button (105) which is completely consistent with the first brake button (103) is arranged on the front surface of the handle (1).

2. The crack detection integrated test instrument auxiliary tool according to claim 1, wherein the clamping groove (106) does not penetrate through the upper half part (101) of the handle, the clamping groove (106) is mutually embedded with the lower half part of the centering pointer (104), the clamping groove (106) provides a space for the centering pointer (104) to slide left and right in the clamping groove (106) without in-situ rotation, and the centering pointer (104) is installed and removed from a rectangular hole at the left end of the clamping groove (106).

3. The crack synthesis test instrument auxiliary tool according to claim 1, wherein the upper half part (101) of the handle and the lower half part (102) of the handle are connected through vertical bolts, and part of reserved hole sites for connecting the handle (1) are distributed on edges of the upper half part (101) of the handle and the lower half part (102) of the handle.

4. The crack synthesis test instrument auxiliary tool according to claim 1, wherein the hole depth of the mounting hole site of the first brake button (103) penetrates through the upper surface of the upper half part (101) of the handle to reach the inside of the handle (1), and the first brake button (103) is pressed to be extruded onto the corresponding hole site of the upper half part (101) of the handle; the mounting hole site of the second brake button (105) penetrates through the surface of the handle (1) to the inside, and the second brake button (105) is mounted by pressing to be extruded to the corresponding hole site.

5. The auxiliary tool for the comprehensive crack testing instrument according to claim 1, wherein a protrusion is arranged at the central part of the lower half part (102) of the handle, a groove is arranged at the right end of the protrusion, the size of the groove and the protrusion are embedded with those of the right arm (3) and the left arm (2), the front and back displacement of the left arm (2) and the right arm (3) cannot be caused, two bolt holes are respectively arranged on the upper surfaces of the protrusion and the groove, and the bolts are screwed into the bolt holes through the penetrating grooves of the left arm (2) and the right arm (3) to connect the left arm (2) and the right arm (3) with the lower half part (102) of the handle respectively.

6. The auxiliary tool for the comprehensive crack testing instrument according to claim 1, wherein the outer side of the left annular clamp (4) is provided with a left rigid annular clamp shell (402), a pair of short columns are symmetrically arranged on the outer side of the left rigid annular clamp shell (402), the short columns are integrally connected with the left rigid annular clamp shell (402), two ends of the left rigid annular clamp shell (402) are provided with penetrating bolt hole sites, and left knob bolts (403) are arranged in the bolt hole sites in a threaded manner; similarly, the outer side of the right annular clamp (5) is provided with a right rigid annular clamp shell (502), a pair of short columns are symmetrically arranged on the outer side of the right rigid annular clamp shell (502), the short columns are connected with the right rigid annular clamp shell (502) into a whole, two ends of the right rigid annular clamp shell (502) are also provided with penetrating bolt hole sites, and right knob bolts (503) are installed in the bolt hole sites in an internal thread mode.

7. The auxiliary tool for the comprehensive crack testing instrument according to claim 6, wherein two opposite hole sites are arranged at the bifurcation ends of the left arm (2) and the right arm (3), and the short column is installed in the hole sites.

8. The auxiliary tool for the comprehensive crack testing instrument according to claim 1, wherein graduation marks are marked beside the clamping groove (106) on the handle (1) and used for centering the left arm (2) and the right arm (3) with the crack to be tested in the process of matching operation, graduation marks are arranged on the upper surfaces of the left arm (2) and the right arm (3), and the graduation marks of the left arm (2) are longer than those of the right arm (3).

9. The auxiliary tool for the comprehensive crack testing instrument according to claim 6, wherein the inner sides of the left annular clamp (4) and the right annular clamp (5) are respectively provided with a left flexible gasket (401) and a right flexible gasket (501), the left flexible gasket (401) and the right flexible gasket (501) are made of rubber materials, the left knob bolt (403) and the right knob bolt (503) are respectively divided into a bolt and a knob, the bolt cap part and the knob part of the left knob bolt (403) and the right knob bolt (503) are respectively elliptical, the short sides of the knob are longer than the short sides of the bolt cap, the elliptical short sides of the knob are slightly larger than the outer diameters of a bolt shaft and are provided with penetrating bolt holes on the inner surface and the outer surface parallel to the rotating plane of the knob, the circle centers of the bolt holes are consistent with the circle centers of the ellipses, and the short sides of the bolt cap are equal to the outer diameters of the bolt shaft.

10. The crack integration test instrument auxiliary tool according to claim 1, wherein a first brake button (103) and a second brake button (105) on the handle (1) penetrate through the handle (1) to the inside, wherein the first brake button (103) brakes the right arm (3) and the left arm (2) respectively when kept in a pressed state, and the second brake button (105) brakes the left arm (2) when kept in a pressed state.