CN217331894U

CN217331894U - Wood compression test tool

Info

Publication number: CN217331894U
Application number: CN202220919347.6U
Authority: CN
Inventors: 朱贺; 吴维亮; 许骏翔
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-30
Anticipated expiration: 2032-04-20

Abstract

The utility model relates to a timber compression test frock for carry out compression test to timber, timber compression test frock includes supporting seat, spacing subassembly and application of force spare, the supporting seat has and holds the chamber, be used for holding timber, spacing subassembly can the relative supporting seat motion, the at least part of spacing subassembly can stretch into the chamber wall that holds the chamber and during ligneous clearance, so that timber is spacing in holding the intracavity, application of force spare can be relative supporting seat motion under the exogenic action, application of force spare can be to the timber application of force in the motion process. The application provides a timber compression test frock can be under spacing of spacing subassembly, simulates the condition that timber was tied up the restraint by metal casing cladding or other structures among the practical application better, avoids timber because of the fracture of lateral deformation to improve timber compressive strength data accuracy.

Description

Wood compression test tool

Technical Field

The utility model relates to a buffering shock attenuation packing technical field especially relates to timber compression test frock.

Background

The wood as a natural material is widely applied to the fields of filling, packaging and transportation of shock absorbers and the like due to the characteristics of light weight, porosity, good buffering and energy absorption effects and the like, and particularly, the wood is applied to the shock absorbers of radioactive product transportation containers as a main buffering and energy absorption material.

The compression strength of the wood along the grain direction is an important index influencing the buffering performance, however, when the compression test is carried out on the wood at present, the wood fiber structure is buckled and collapsed in the compression process, even a sample is cracked, so that the wood strength test data in the test is inaccurate, and the accuracy of the wood compression strength data is difficult to improve.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a wood compression test tool capable of improving the accuracy of wood compression strength data for solving the problem of inaccurate wood strength test data in a test.

The utility model provides a timber compression test frock for carry out compression test to timber, timber compression test frock includes:

the supporting seat is provided with an accommodating cavity for accommodating wood;

the limiting component can move relative to the supporting seat, and at least part of the limiting component can extend into a gap between the cavity wall of the accommodating cavity and the wood so as to limit the wood in the accommodating cavity;

the force application piece can move relative to the supporting seat under the action of external force, and can apply force to the wood in the moving process.

In one embodiment, the limiting assembly comprises a plurality of limiting members, each limiting member can move relative to the supporting seat, at least part of each limiting member extends into a gap between the cavity wall of the accommodating cavity and the wood, and all the limiting members surround to form a limiting space for limiting the wood.

In one embodiment, the limiting assembly comprises an adjusting part and a limiting part, wherein the adjusting part at least partially penetrates through the supporting seat to abut against the limiting part;

wherein, the regulating part can be to the locating part application of force to make the locating part motion.

In one embodiment, the adjusting piece comprises a plurality of adjusting pieces which are arranged on the supporting seat at intervals along the circumferential direction.

In one embodiment, the inner contour shape of the accommodating cavity can be matched with the outer contour shape of the wood; and/or

The outline shape of the limiting piece can be matched with the outline shape of the wood.

In one embodiment, the support seat comprises a positioning member having a receiving cavity, and the positioning member further comprises a first opening communicated with the receiving cavity for wood to enter.

In one embodiment, the support base further comprises a support plate and a support member connected to the support plate, the support member being connectable to an external component;

wherein, the projection of the supporting plate along the first direction is covered with the projection of the positioning piece along the first direction.

In one embodiment, the support plate is circular in cross-section.

In one embodiment, the force applying member has a force applying plate having a force applying plane, and the force applying plane can be attached to the surface of the wood.

In one embodiment, the force application member further comprises a force application rod, the force application rod is connected to one side of the force application plate, which is opposite to the force application plane, and the force application rod can apply force to the wood under the driving of an external component.

Above-mentioned timber compressive test frock can be under spacing of spacing subassembly, simulates the condition that timber was tied up the restraint by metal casing cladding or other structures in the practical application better, avoids timber because of the fracture of lateral deformation to improve timber compressive strength data accuracy.

Drawings

Fig. 1 is a schematic structural view of a wood compression test tool according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a wood compression test tool according to another embodiment of the present invention.

Description of reference numerals:

100. a wood compression test tool; 10. a supporting seat; 11. a positioning member; 12. a support plate; 13. a support member; 20. a limiting component; 21. a limiting member; 22. an adjustment member; 30. a force application member; 200. wood.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

In order to facilitate understanding of the technical scheme of the utility model, before the detailed explanation, at first, explain the experimental frock of present timber compressive strength.

As background art, wood is an excellent buffering energy-absorbing material, and in order to reasonably design a shock absorber according to the performance of wood, the compressive strength of wood needs to be accurately measured. The wood has the characteristic of obvious anisotropy, and is mainly characterized in that the mechanical property in the grain-following direction is obviously higher than that in the cross grain direction. Wherein, the longitudinal grain direction is the trunk growing direction, and the transverse grain direction is the circumferential direction or the radial direction of the trunk.

In actual conditions, the side parts of the wood are often wrapped by a metal shell or bound by other structures, so that the transverse deformation of the wood is restrained. The existing wood compression test tool has no limitation on the side part of the wood, and because the fiber tissues inside the wood are distributed along the grain direction, when the pressure is applied along the grain direction of the wood, if the side part of the wood is in an unconstrained state, the wood is easy to split, break or fall, and the like, so that the measured compression strength data is low, and the real buffering energy absorption performance of the wood cannot be reflected.

Therefore, it is necessary to provide a wood compression test tool capable of improving the accuracy of the wood compression strength data.

For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.

Fig. 1 shows the utility model discloses a structural schematic diagram of timber compression test frock in an embodiment, fig. 2 shows the utility model discloses the structural schematic diagram of timber compression test frock in another embodiment, it is shown with fig. 2 to combine, an embodiment of the utility model provides a timber compression test frock 100 for carry out compression test to timber 200, timber compression test frock 100 includes supporting seat 10, spacing subassembly 20 and application of force spare 30, supporting seat 10 has and holds the chamber, be used for holding timber 200, spacing subassembly 20 can move relative to supporting seat 10, the at least part of spacing subassembly 20 can stretch into the chamber wall that holds the chamber and the clearance of timber 200, so that timber 200 is spacing in holding the intracavity, application of force spare 30 can move relative to supporting seat 10 under the exogenic action, application of force spare 30 can be to timber 200 application of force in the motion process.

The utility model provides a timber compression test frock 100 can be under spacing of spacing subassembly 20, and the condition of restraint is tied up by metal casing cladding or other structures to timber 200 in the simulation practical application better, avoids timber 200 because of the fracture of horizontal deformation to improve timber 200 compressive strength data accuracy.

In some embodiments, the supporting seat 10 includes a positioning member 11, the positioning member 11 has a receiving cavity, and the positioning member 11 further includes a first opening communicating with the receiving cavity for the wood 200 to enter. Thus, the wood 200 can be easily entered into the receiving cavity through the first opening.

In some embodiments, the supporting base 10 further includes a supporting plate 12 and a supporting member 13 connected to the supporting plate 12, the supporting member 13 can be connected to an external component, wherein a projection of the supporting plate 12 along the first direction overlaps a projection of the positioning member 11 along the first direction. In this way, the support area of the support plate 12 can be made larger, and the support of the positioning member 11 is made more stable.

It should be noted that the first direction is an axial direction of the support 13.

In some embodiments, the support plate 12 is circular in cross-section. Thus, the circular support plate 12 can prevent the external devices from being damaged due to the corners.

In the embodiment of the application, the outer contour of the positioning element 11 is adapted to the inner contour of the receiving space. In this way, when the test is performed on the wood 200 of different shapes, it is easy to distinguish the different positioning members 11 by the outline shape of the positioning member 11.

In some embodiments, when the wood 200 has a square column shape, the outline of the positioning member 11 has a square shape, and the diagonal dimension of the positioning member 11 is equal to the radial dimension of the supporting plate 12. Thus, waste of materials can be avoided, and cost is saved.

In other embodiments, when the wood 200 has a cylindrical shape, the positioning member 11 has a circular shape.

In some embodiments, the support 13 can have an outline shape that is adaptable to an external component. In this way, it can be easily adapted to an external testing machine. Specifically, the support 13 has a circular rod shape.

In some embodiments, the limiting component 20 includes a plurality of limiting members 21, each limiting member 21 is capable of moving relative to the supporting seat 10, at least a portion of each limiting member 21 extends into a gap between the cavity wall of the accommodating cavity and the wood 200, and all the limiting members 21 enclose a limiting space for limiting the wood 200. Like this, can carry on spacingly to timber 200 from a plurality of directions through a plurality of locating parts 21, guarantee all to carry on spacingly to the whole lateral part of timber 200 to make the locating part 21 to the application of force of timber 200 even.

In some embodiments, the limiting members 21 include four. Thus, the four stoppers 21 can uniformly urge the outer periphery of the wood 200 reliably.

In some embodiments, the limiting assembly 20 includes an adjusting member 22 and a limiting member 21, the adjusting member 22 is at least partially inserted through the supporting seat 10 to abut against the limiting member 21, wherein the adjusting member 22 can apply a force to the limiting member 21 to move the limiting member 21. Like this, can order about locating part 21 through regulating part 22 and move to limiting position to through regulating part 22 to the locating part 21 application of force, the effort that the lateral part of simulation timber 200 received under the operating condition.

In some embodiments, the adjusting member 22 includes a plurality of adjusting members 22, and the plurality of adjusting members 22 are circumferentially spaced on the supporting seat 10. In this way, the plurality of adjusters 22 can urge the stopper 21 from a plurality of directions.

More specifically, in some embodiments, when the wood 200 has a square column shape, the number of the limiting members 21 is four, the number of the adjusting members 22 is eight, and every two adjusting members 22 are disposed on each limiting member 21 at intervals. In other embodiments, when the wood 200 has a circular column shape, the number of the limiting members 21 is four, the number of the adjusting members 22 is four, and the four adjusting members 22 correspond to the four limiting members 21 one by one.

In the embodiment of the present application, the adjusting member 22 includes a bolt, and the adjusting member 22 is threadedly coupled to the positioning member 11.

In some embodiments, the inner contour of the receiving cavity can be adapted to the outer contour of the wood 200. Thus, damage to the wood 200 caused by the positioning member 11 due to improper contour can be avoided.

In some embodiments, the wood 200 is in the shape of a square column, and the inner contour of the accommodating cavity is also in the shape of a square.

In other embodiments, the wood 200 is cylindrical, and the inner contour of the accommodating cavity is circular.

In other embodiments, the limiting member 21 can be matched with the wood 200. Therefore, damage to the wood 200 caused by the limiting part 21 due to the fact that the outline is not matched can be avoided, the limiting part 21 can be attached to the wood 200, and uneven force application is avoided.

In some embodiments, the wood 200 is a square column, and the outline of the limiting member 21 is also a square.

In other embodiments, the wood 200 is a circular column, and the limiting member 21 has an arc shape. More specifically, the stopper 21 is concentric with the wood 200. In this way, the arc-shaped contour of the limiting member 21 can be ensured to better fit the wood 200.

In the embodiment of the present application, the outline shape of the receiving cavity and the outline shape of the limiting member 21 can be matched with the outline shape of the wood 200.

Preferably, the central axis of the wood 200 can coincide with the central axis of the receiving cavity. If the central axis of the wood 200 is not coincident with the central axis of the accommodating cavity, the limiting members 21 of various specifications are needed to uniformly apply force to the wood 200. Thus, the manufacturing process of the limiting member 21 can be reduced, thereby reducing the cost.

In some embodiments, the projection of the limiting member 21 toward the positioning member 11 can coincide with the projection of the wood 200 toward the positioning member 11. In this way, while avoiding waste of material, the limiting member 21 can uniformly apply force to the side portion of the wood 200.

In some embodiments, the force applying member 30 has a force applying plate with a force applying plane, which can be conformed to the surface of the wood 200. Therefore, the local stress condition of the wood 200 in the actual working condition can be simulated, and the compressive strength of the wood 200 can be measured more accurately.

In particular, in some embodiments, the cross-sectional area of the force application plane can be less than the cross-sectional area of the wood 200. In this way, the wood 200 can be locally urged more intensively.

Preferably, the force application plate has a circular outline shape.

In some embodiments, the force applying element 30 further comprises a force applying rod connected to a side of the force applying plate facing away from the force applying plane, the force applying rod being capable of applying a force to the wood 200 under the actuation of an external member. In this way, the force application rod can simulate the stress condition of the wood 200 under the actual working condition under the driving of the external component, and the force is applied to the wood 200 through the force application plate.

In particular, in some embodiments, the force application rod has a circular profile. In this way, it can be easily adapted to an external testing machine.

In the embodiment of the application, the force application plate and the force application rod are integrally formed, and the diameter of the force application plate is equal to that of the force application rod.

The wood compression test tool 100 provided by the embodiment of the application at least has the following beneficial effects:

under the spacing of spacing subassembly 20, can better simulate the condition that timber 200 is tied up the restraint by metal casing cladding or other structures in the practical application, avoid timber 200 because of the fracture of horizontal deformation to improve timber 200 compressive strength data accuracy.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a timber compression test frock for carry out compression test to timber, a serial communication port, timber compression test frock includes:

the supporting seat is provided with an accommodating cavity for accommodating the wood;

the force application piece can move relative to the supporting seat under the action of external force, and the force application piece can apply force to the wood in the moving process.

2. The wood compression test tool according to claim 1, wherein the limiting assembly comprises a plurality of limiting members, each limiting member can move relative to the supporting seat, at least part of each limiting member extends into a gap between the cavity wall of the accommodating cavity and the wood, and all the limiting members surround to form a limiting space for limiting the wood.

3. The wood compression test tool according to claim 1, wherein the limiting assembly comprises an adjusting piece and a limiting piece, and the adjusting piece at least partially penetrates through the supporting seat to abut against the limiting piece;

the adjusting piece can apply force to the limiting piece to enable the limiting piece to move.

4. The wood compression test tool according to claim 3, wherein the adjusting pieces are arranged on the supporting seat at intervals along the circumferential direction.

5. The wood compression test tool according to claim 2 or 3, wherein the inner contour shape of the accommodating cavity can be matched with the outer contour shape of the wood; and/or

6. The wood compression test tool according to claim 1, wherein the supporting seat comprises a positioning member, the positioning member has the accommodating cavity, and the positioning member further comprises a first opening communicated with the accommodating cavity for the wood to enter.

7. The wood compression test tool according to claim 6, wherein the supporting seat further comprises a supporting plate and a supporting piece connected with the supporting plate, and the supporting piece can be connected with an external component;

the projection of the supporting plate along the first direction is overlaid with the projection of the positioning piece along the first direction.

8. The wood compression test tool according to claim 7, wherein the cross section of the support plate is circular.

9. The wood compression test tool according to claim 1, wherein the force application member is provided with a force application plate, the force application plate is provided with a force application plane, and the force application plane can be attached to the surface of the wood.

10. The wood compression test tool of claim 9, wherein the force application member further comprises a force application rod, the force application rod is connected to one side of the force application plate, which faces away from the force application plane, and the force application rod can apply force to the wood under the driving of an external component.