CN220289276U - Shear node testing device - Google Patents

Abstract

The utility model discloses a shear node testing device which comprises a bottom plate, a top plate, a vertical adjusting piece, a fixed plate and a pull rod, wherein the bottom plate is provided with a plurality of shear nodes; the top plate is positioned above the bottom plate and is arranged opposite to the bottom plate; two ends of the vertical adjusting piece are respectively connected with the bottom plate and the top plate, and the vertical adjusting piece can drive the bottom plate and/or the top plate to lift; the fixing plate is arranged between the bottom plate and the top plate and can slide along the horizontal direction relative to the bottom plate, and is provided with a mounting surface for fixing a test piece to be tested; one end of the pull rod is connected to the center of the top plate through the spherical hinge chuck, and the other end of the pull rod is used for being connected with a testing instrument. The technical scheme of the utility model can overcome the defects of easy occurrence of eccentric stress, large test accidental error and non-pure shearing force in the stress state.

Description

Shear node testing device

Technical Field

The utility model relates to the technical field of shear test equipment, in particular to a shear node test device.

Background

With the new building market gradually entering a saturation stage and the design service life of the existing building increasing, the country begins to comprehensively and widely popularize steel structural engineering, more and more projects have great demands on reinforcement technology, and carbon fiber composite materials (CFRP, carbon Fiber Reinforced Polymers) are widely applied to engineering reinforcement due to excellent stress performance, so that shear resistance research of reinforcement nodes is particularly critical.

In the related art, a traditional testing device for a shear node mainly adopts an upper clamp and a lower clamp to simply clamp the head and the tail of a test piece to be tested, and a testing instrument is used for directly loading the upper clamp and/or the lower clamp so as to test the shear node, so that the defects of eccentric stress, large test accidental error and non-pure shear force of a stress state are easy to occur.

Disclosure of Invention

The utility model mainly aims to provide a shear node testing device, which aims to overcome the defects that eccentric stress is easy to occur, the test accidental error is large and the stress state is non-pure shear force.

In order to achieve the above object, the present utility model provides a shear node testing device, comprising:

a bottom plate;

the top plate is positioned above the bottom plate and is arranged opposite to the bottom plate;

the two ends of the vertical adjusting piece are respectively connected with the bottom plate and the top plate, and the vertical adjusting piece can drive the bottom plate and/or the top plate to lift;

the fixing plate is arranged between the bottom plate and the top plate and can slide along the horizontal direction relative to the bottom plate, and is provided with a mounting surface for fixing a test piece to be tested;

and one end of the pull rod is connected to the center of the top plate through a spherical hinge chuck, and the other end of the pull rod is used for being connected with a testing instrument.

In an embodiment of the present utility model, a first chute is disposed on a side of the bottom plate facing the top plate, the first chute extends along a sliding direction of the fixing plate, and a side of the fixing plate away from the top plate extends into the first chute and slides along the extending direction of the first chute;

and/or, one side of the top plate facing the bottom plate is provided with a second chute, the second chute extends along the sliding direction of the fixed plate, and one side of the fixed plate away from the bottom plate extends into the second chute and slides along the extending direction of the second chute.

In an embodiment of the present utility model, the vertical adjusting member includes an adjusting screw, two ends of the adjusting screw are respectively disposed through the bottom plate and the top plate, and the adjusting screw rotates to drive the bottom plate and/or the top plate to lift.

In an embodiment of the utility model, a plurality of adjusting screws are arranged, the adjusting screws are arranged at intervals along the circumferential direction of the bottom plate, an installation space is formed by surrounding, and the fixing plate is positioned in the installation space.

In an embodiment of the utility model, the shear node testing device further includes a limiting plate and a limiting connecting piece, wherein the limiting plate is connected to one side edge of the top plate, and the limiting plate extends towards the direction of the bottom plate, so that the limiting plate is at least partially arranged opposite to the fixing plate, and a connecting hole is formed in one side of the limiting plate facing the fixing plate;

the fixing plate is further provided with a limiting surface facing away from the mounting surface, the limiting surface is further provided with a limiting hole, and the limiting connecting piece penetrates through the connecting hole and is inserted into the limiting hole.

In an embodiment of the utility model, a side of the bottom plate facing the top plate is further provided with an avoidance hole, and the avoidance hole is used for extending out a loading end of the test piece to be tested.

In an embodiment of the present utility model, the avoidance hole penetrates to one side of the bottom plate.

In an embodiment of the present utility model, a center hole is provided in the center of the top plate, and one end of the pull rod connected with the ball pivot chuck is penetrated through the center hole.

In an embodiment of the utility model, the mounting surface is provided with a plurality of first mounting holes arranged at intervals, the test piece to be tested is provided with a plurality of second mounting holes arranged at intervals, the shear node testing device further comprises a plurality of connecting pieces, and each connecting piece is arranged in a penetrating manner in one of the second mounting holes and is inserted into one of the first mounting holes.

In an embodiment of the present utility model, the fixing plate includes:

a mounting plate having the mounting surface;

the two connecting side plates are respectively arranged at two opposite side edges of the mounting plate, and the two connecting side plates are oppositely arranged and form an included angle with the mounting plate.

According to the shear node testing device, when the shear node testing is carried out on the piece to be tested, the piece to be tested can be fixed on the mounting surface of the fixed plate, then the bottom plate and/or the top plate are driven to lift through the vertical adjusting piece, the fixed plate and the piece to be tested fixed on the fixed plate are driven to lift through the bottom plate and/or the top plate, and therefore the piece to be tested can be centered and adjusted in the vertical direction, and meanwhile the fixed plate can be driven to slide in the horizontal direction under the action of external force, and the piece to be tested is driven to be centered and adjusted in the horizontal direction through the fixed plate.

Like this, when test instrument's loading end carries out loading to the pull rod, just can rotate the fine setting in 360 degrees directions through the ball pivot chuck, can carry out centering adjustment to the test piece that awaits measuring in R direction of rotation, thereby make whole shear-resistant node testing arrangement and test instrument be in the state of axial atress, just can guarantee that the stress state of the shear-resistant node on the test piece that awaits measuring keeps in the state of pure shearing, press close to the stress mode that accords with theoretical calculation more, can reflect the actual condition of shear-resistant node test more truly, thereby can effectively improve and appear eccentric atress easily in carrying out the shear-resistant node test in-process, the test accident error is big, the stress state is the drawback of non-pure shearing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a shear node testing apparatus according to the present utility model;

FIG. 2 is a schematic diagram of a shear node testing device according to an embodiment of the present utility model from another perspective;

FIG. 3 is an enlarged view of a portion of an embodiment of a shear node test device according to the present utility model;

FIG. 4 is a front view of an embodiment of a shear node test device of the present utility model;

FIG. 5 is a side view of an embodiment of a shear node test device of the present utility model;

FIG. 6 is a bottom view of a base plate of one embodiment of a shear node test device of the present utility model;

FIG. 7 is a front view of a base plate of an embodiment of a shear node test device of the present utility model;

FIG. 8 is a bottom view of a top plate of one embodiment of the shear node test device of the present utility model;

FIG. 9 is a front view of a top plate of an embodiment of a shear node test device of the present utility model;

FIG. 10 is a front view of a mounting plate of an embodiment of a shear node test device according to the present utility model;

FIG. 11 is a top view of a mounting plate in an embodiment of a shear node test device according to the present utility model;

FIG. 12 is a front view of a limiting plate in an embodiment of a shear node test device according to the present utility model;

FIG. 13 is a front view of a pull rod of an embodiment of a shear node test device of the present utility model;

FIG. 14 is a schematic view showing a part of the structure of an embodiment of a test piece to be tested.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Shear node testing device	412	Limiting surface
10	Bottom plate	4121	Limiting hole
				11	First chute	42	Connecting side plate
12	Avoidance hole	50	Limiting plate
				20	Top plate	51	Connecting hole
21	Second chute	52	First fixing hole
				22	Center hole	60	Spacing connecting piece
23	Second fixing hole	70	Pull rod
				30	Vertical adjusting piece	71	Ball hinge clamping head
31	Adjusting screw	72	Bolt hole
				32	Nut	73	Bolt
33	Gasket	80	Connecting piece
				40	Fixing plate	90	Fixing piece
41	Mounting plate	200	Test piece to be tested
				411	Mounting surface	210	Second mounting hole
4111	First mounting hole

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a shear node testing device 100, which aims to overcome the defects that eccentric stress is easy to occur, the test accidental error is large, and the stress state is non-pure shear force.

The specific structure of the shear node test device 100 of the present utility model will be described below:

referring to fig. 1 to 5 in combination, in an embodiment of the shear node testing device 100 of the present utility model, the shear node testing device 100 includes a bottom plate 10, a top plate 20, a vertical adjustment member 30, a fixing plate 40, and a pull rod 70; the top plate 20 is positioned above the bottom plate 10 and is arranged opposite to the bottom plate 10; two ends of the vertical adjusting piece 30 are respectively connected with the bottom plate 10 and the top plate 20, and the vertical adjusting piece 30 can drive the bottom plate 10 and/or the top plate 20 to lift; the fixing plate 40 is arranged between the bottom plate 10 and the top plate 20 and can slide along the horizontal direction relative to the bottom plate 10, and the fixing plate 40 is provided with a mounting surface 411, and the mounting surface 411 is used for fixing the test piece 200 to be tested; one end of the pull rod 70 is connected to the center of the top plate 20 through a ball pivot chuck 71, and the other end of the pull rod 70 is used for connecting with a test instrument.

It can be appreciated that in the shear node testing device 100 provided by the utility model, when the shear node test is performed on the test piece 200 to be tested, the test piece 200 to be tested can be fixed on the mounting surface 411 of the fixing plate 40, then the bottom plate 10 and/or the top plate 20 are driven to lift by the vertical adjusting member 30, and then the fixing plate 40 and the test piece 200 to be tested fixed on the fixing plate 40 are driven to lift by the bottom plate 10 and/or the top plate 20, so that the centering adjustment of the test piece 200 to be tested in the vertical direction can be performed, and meanwhile, the fixing plate 40 can be driven to slide along the horizontal direction under the action of external force, and then the centering adjustment of the test piece 200 to be tested in the horizontal direction is driven by the fixing plate 40.

Thus, when the loading end of the test instrument loads the pull rod 70, the spherical hinge chuck 71 can be used for carrying out rotary fine adjustment in the 360-degree direction, and the test piece 200 to be tested can be subjected to centering adjustment in the R rotary direction, so that the whole shear node test device 100 and the test instrument are in an axial stress state, the stress state of the shear node on the test piece 200 to be tested can be ensured to be kept in a pure shear state, the stress mode conforming to theoretical calculation is more closely met, the actual condition of the shear node test can be reflected more truly, and the defects that eccentric stress is easy to occur in the test process of the shear node test, the test accident error is large, and the stress state is not pure shear can be effectively overcome.

In addition, the shear node testing device 100 provided by the scheme is a detachable assembly device, the test piece 200 to be tested with the same size is not required to be assembled for the second time, and the test pieces 200 to be tested with different sizes are required to be driven to slide to the corresponding positions in the horizontal direction by the external force, so that the aim of centering adjustment is fulfilled, and the testing efficiency can be improved.

It should be noted that after the centering adjustment of the test piece 200 in the vertical direction and the horizontal direction, an infrared centering instrument may be used to detect whether the test piece 200 to be tested has an eccentric problem at this time, and when the eccentric problem of the test piece 200 to be tested is detected, the centering adjustment of the test piece 200 to be tested in the vertical direction and/or the horizontal direction is continued until the infrared centering instrument detects that the test piece 200 to be tested has no eccentric problem. The infrared centering device may be one of the components in the shear node testing device 100, or may be an external component, which is not specifically limited herein.

In the practical application process, the vertical adjusting member 30 may specifically drive the bottom plate 10 and/or the top plate 20 to lift by rotating, or may drive the bottom plate 10 and/or the top plate 20 to lift by pulling or pushing. In addition, the vertical adjusting member 30 may specifically drive the bottom plate 10 and/or the top plate 20 to lift under the driving of manual or mechanical structure.

In addition, the fixing plate 40 may also slide in the horizontal direction under the driving of a manual or mechanical structure, so as to drive the test piece 200 to be tested to slide in the horizontal direction.

In the practical application process, one end of the pull rod 70 provided with the spherical hinge clamping head 71 can be specifically connected to the center of the top plate 20 through a screw connection, a buckle connection, a plug connection, an adhesion connection and the like.

In some embodiments, since the fixing plate 40 and the test piece 200 to be tested have a certain weight, the fixing plate 40 and the test piece 200 to be tested are borne on the bottom plate 10, and the bottom plate 10 is driven to lift by the vertical adjusting piece 30, so that the test piece 200 to be tested can be driven to perform centering adjustment in the vertical direction, and thus, the center line of the test piece 200 to be tested and the perpendicular bisector of the whole shear node testing device 100 can be observed and adjusted more intuitively, and the normal line of sight judgment of people is more met.

Further, referring to fig. 2, 3, 6 and 7, in an embodiment of the present utility model, a side of the bottom plate 10 facing the top plate 20 is provided with a first chute 11, the first chute 11 extends along a sliding direction of the fixing plate 40, and a side of the fixing plate 40 away from the top plate 20 extends into the first chute 11 and slides along the extending direction of the first chute 11.

So set up, through in stretching into first spout 11 with one side that roof 20 was kept away from to fixed plate 40, when driving fixed plate 40 and sliding under the exogenic action, fixed plate 40 can slide in the extending direction of first spout 11, can make fixed plate 40 slide in the horizontal direction more steadily to guarantee the regulation precision to test piece 200 awaits measuring.

Further, referring to fig. 8 and 9 in combination, in an embodiment of the present utility model, a second sliding groove 21 is disposed on a side of the top plate 20 facing the bottom plate 10, the second sliding groove 21 is disposed along a sliding direction of the fixing plate 40, and a side of the fixing plate 40 away from the bottom plate 10 extends into the second sliding groove 21 and slides along the extending direction of the second sliding groove 21.

Similarly, by extending the side of the fixing plate 40 away from the bottom plate 10 into the second sliding slot 21, when the fixing plate 40 is driven to slide under the action of external force, the fixing plate 40 can also slide in the extending direction of the second sliding slot 21, so that the fixing plate 40 can slide in the horizontal direction more stably, and the adjustment accuracy of the test piece 200 to be measured is ensured.

Further, referring to fig. 1 to 5 in combination, in an embodiment of the present utility model, the vertical adjusting member 30 includes an adjusting screw 31, two ends of the adjusting screw 31 are respectively disposed through the bottom plate 10 and the top plate 20, and the adjusting screw 31 rotates to drive the bottom plate 10 and/or the top plate 20 to lift.

So set up, when need to be to test piece 200 to be measured in the centering adjustment in vertical direction, can drive bottom plate 10 and/or roof 20 lift through rotatory adjusting screw 31 more steadily to can guarantee the precision that bottom plate 10/or roof 20 adjusted in vertical direction, and then can guarantee the test piece 200 to be measured in vertical direction's regulation precision.

In some embodiments, the vertical adjusting member 30 may further include a nut 32, and after the fixing plate 40 and the test piece 200 to be measured are centered in the vertical direction, the adjusting screw 31 may be locked by the nut 32 to avoid a positional deviation caused by a collision, and in addition, a spacer 33 may be interposed between the nut 32 and the top surface of the top plate 20 to ensure locking strength of the nut 32 by the spacer 33, and at the same time, damage to the top plate 20 when the nut 32 is tightened may be avoided.

Further, referring to fig. 1 to 5 in combination, in an embodiment of the present utility model, a plurality of adjusting screws 31 are provided, and the plurality of adjusting screws 31 are spaced along the circumference of the base plate 10, and enclose a mounting space, and the fixing plate 40 is located in the mounting space.

So set up, through using a plurality of adjusting screw 31 to treat that test piece 200 carries out centering adjustment in the vertical direction, can guarantee to be more steady in centering adjustment process, adjusting screw 31 still plays the effect of connecting bottom plate 10 and roof 20 simultaneously, consequently is provided with a plurality of adjusting screw 31 and can promote the stability of connecting bottom plate 10 and roof 20, and then guarantees the reliability of whole device.

Further, referring to fig. 2, 4, 5, and 12 in combination, in an embodiment of the utility model, the shear node testing device 100 further includes a limiting plate 50 and a limiting connecting piece 60, the limiting plate 50 is connected to one side of the top plate 20, and the limiting plate 50 extends toward the bottom plate 10, so that the limiting plate 50 is at least partially disposed opposite to the fixing plate 40, and a connecting hole 51 is formed on a side of the limiting plate 50 facing the fixing plate 40; the fixing plate 40 further has a limiting surface 412 facing away from the mounting surface 411, the limiting surface 412 is further provided with a limiting hole 4121, and the limiting connector 60 is inserted into the limiting hole 4121 through the connecting hole 51.

So set up, after finishing centering adjustment to the test piece 200 that awaits measuring in horizontal direction and vertical direction, use spacing connecting piece 60 to pass the connecting hole 51 of limiting plate 50 to insert in the limiting hole 4121 of fixed plate 40, can lock fixed plate 40, can avoid the mistake collision to cause the position of test piece 200 that awaits measuring to take place the skew.

In some embodiments, the limiting plate 50 may be further provided with a first fixing hole 52 spaced from the connecting hole 51, and a second fixing hole 23 is provided on one side of the top plate 20, and then the fixing member 90 is inserted into the first fixing hole 52 and the second fixing hole 23, so that the limiting plate 50 may be fixed on one side of the top plate 20.

Further, at least two fixing holes 52, 23 and 90 may be provided, so that stability of the connection of the limiting plate 50 to the top plate 20 may be improved, and rotation of the limiting plate 50 relative to the top plate 20 may be avoided.

Further, referring to fig. 1, 6 and 7 in combination, in an embodiment of the present utility model, a side of the bottom plate 10 facing the top plate 20 is further provided with a dodging hole 12, where the dodging hole 12 is used for extending out a loading end of the test piece 200 to be tested.

So set up, after the test piece 200 to be tested is fixedly installed on the installation face 411 of the fixing plate 40, the loading end of the test piece 200 to be tested can be extended from the avoiding opening of the bottom plate 10, so as to perform loading test on the test piece 200 to be tested.

Further, referring to fig. 1 and 6 in combination, in an embodiment of the present utility model, the avoidance hole 12 penetrates to one side of the bottom plate 10, so that in the process of installing the test piece 200 to be tested, the test piece 200 to be tested can be smoothly placed on the mounting surface 411 of the fixing plate 40 from one side of the avoidance hole penetrating to the side of the bottom plate 10, and then the test piece 200 to be tested is fixed on the mounting surface 411 of the fixing plate 40, thereby being more convenient for installing the test piece 200 to be tested.

Further, referring to fig. 8 and 13 in combination, in an embodiment of the present utility model, the center of the top plate 20 is provided with a center hole 22, and one end of the pull rod 70 connected with the ball pivot chuck 71 is penetrated through the center hole 22.

In this way, during the installation process, the end of the pull rod 70, to which the ball pivot chuck 71 is connected, can pass through the central hole 22 of the top plate 20, so that the pull rod 70 and the top plate 20 can be connected more stably.

In some embodiments, the outer sidewall of the pull rod 70 may be provided with a bolt hole 72, so that after the pull rod 70 is inserted into the central hole 22 of the top plate 20, the bolt 73 is inserted into the bolt hole 72 of the pull rod 70, and the bolt 73 abuts against the top surface of the top plate 20, so that the pull rod 70 is fixedly connected to the top plate 20.

Further, referring to fig. 1 to 5, 10 and 14, in an embodiment of the present utility model, the mounting surface 411 is provided with a plurality of first mounting holes 4111 disposed at intervals, the test piece 200 to be tested has a plurality of second mounting holes 210 disposed at intervals, and the shear node testing device 100 further includes a plurality of connecting members 80, where each connecting member 80 is disposed through one of the second mounting holes 210 and is inserted into one of the first mounting holes 4111.

In this way, before the shear node test is performed, the test piece 200 to be tested may be placed on the mounting surface 411 of the fixing plate 40, and the second mounting hole 210 on the test piece 200 to be tested is disposed corresponding to the first mounting hole 4111 on the fixing plate 40, and then the connector 80 is used to pass through the second mounting hole 210 and insert into the first mounting hole 4111, so that the test piece 200 to be tested may be fixedly mounted on the mounting surface 411 of the fixing plate 40.

Further, the first mounting hole 4111, the second mounting hole 210 and the connecting members 80 may be provided in plurality, so that each connecting member 80 is inserted into one of the second mounting holes 210 and one of the first mounting holes 4111, and the test piece 200 to be tested can be more stably mounted on the mounting surface 411 of the fixing plate 40.

Further, referring to fig. 10 and 11 in combination, in an embodiment of the present utility model, the fixing plate 40 includes a mounting plate 41 and two connecting side plates 42; the mounting plate 41 has a mounting face 411; the two connecting side plates 42 are respectively arranged at two opposite side edges of the mounting plate 41, the two connecting side plates 42 are oppositely arranged and form an included angle with the mounting plate 41, namely, the fixing plate 40 is arranged into an I-shaped structure, so that the weight of the fixing plate 40 can be effectively reduced on the premise of meeting the use function, and the overall weight of the shear node testing device 100 can be further reduced.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A shear node testing device, comprising:

a bottom plate;

the top plate is positioned above the bottom plate and is arranged opposite to the bottom plate;

the two ends of the vertical adjusting piece are respectively connected with the bottom plate and the top plate, and the vertical adjusting piece can drive the bottom plate and/or the top plate to lift;

the fixing plate is arranged between the bottom plate and the top plate and can slide along the horizontal direction relative to the bottom plate, and is provided with a mounting surface for fixing a test piece to be tested;

and one end of the pull rod is connected to the center of the top plate through a spherical hinge chuck, and the other end of the pull rod is used for being connected with a testing instrument.

2. The shear node test device according to claim 1, wherein a first chute is provided on a side of the bottom plate facing the top plate, the first chute extending in a sliding direction of the fixing plate, and a side of the fixing plate away from the top plate extends into the first chute and slides in the extending direction of the first chute;

and/or, one side of the top plate facing the bottom plate is provided with a second chute, the second chute extends along the sliding direction of the fixed plate, and one side of the fixed plate away from the bottom plate extends into the second chute and slides along the extending direction of the second chute.

3. The shear node test device of claim 1, wherein the vertical adjustment member comprises an adjustment screw, two ends of the adjustment screw are respectively arranged on the bottom plate and the top plate in a penetrating manner, and the adjustment screw rotates to drive the bottom plate and/or the top plate to lift.

4. The shear node test device of claim 3, wherein the plurality of adjusting screws are arranged at intervals along the circumferential direction of the bottom plate, an installation space is formed by surrounding, and the fixing plate is positioned in the installation space.

5. The shear node test device according to any one of claims 1 to 4, further comprising a limiting plate and a limiting connector, wherein the limiting plate is connected to one side of the top plate, and the limiting plate extends toward the bottom plate, so that the limiting plate is at least partially disposed opposite to the fixing plate, and a connecting hole is formed in a side of the limiting plate facing the fixing plate;

the fixing plate is further provided with a limiting surface facing away from the mounting surface, the limiting surface is further provided with a limiting hole, and the limiting connecting piece penetrates through the connecting hole and is inserted into the limiting hole.

6. The shear node test device according to any one of claims 1-4, wherein a side of the bottom plate facing the top plate is further provided with a relief hole, and the relief hole is used for extending out a loading end of the test piece to be tested.

7. The shear node test device of claim 6, wherein the relief aperture extends through to a side of the base plate.

8. The shear node test device according to any one of claims 1-4, wherein a center hole is provided in a center of the top plate, and an end of the pull rod to which the ball pivot collet is connected is penetrated through the center hole.

9. The shear node test device of any of claims 1-4, wherein the mounting surface is provided with a plurality of first mounting holes arranged at intervals, the test piece to be tested is provided with a plurality of second mounting holes arranged at intervals, and the shear node test device further comprises a plurality of connecting pieces, each connecting piece is arranged through one of the second mounting holes and is inserted into one of the first mounting holes.

10. The shear node test device of any of claims 1-4, wherein the stationary plate comprises:

a mounting plate having the mounting surface;

the two connecting side plates are respectively arranged at two opposite side edges of the mounting plate, and the two connecting side plates are oppositely arranged and form an included angle with the mounting plate.