CN212722327U - Pipe component axial compression test loading device - Google Patents
Pipe component axial compression test loading device Download PDFInfo
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- CN212722327U CN212722327U CN202021006250.3U CN202021006250U CN212722327U CN 212722327 U CN212722327 U CN 212722327U CN 202021006250 U CN202021006250 U CN 202021006250U CN 212722327 U CN212722327 U CN 212722327U
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- 229910000922 High-strength low-alloy steel Inorganic materials 0.000 description 1
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Abstract
The utility model provides a pipe component axial compression test loading device, loading device is two sets, and the pipe component cup joints between two sets of loading device, and every set of loading device all includes: a first hinge member, a second hinge member and a connecting plate; the first hinge member is in fit hinge connection with the second hinge member, and the second hinge member is connected with the connecting plate through the first hinge member; the end of the second hinge member, which is not hinged with the first hinge member, is provided with a step structure, and the pipe member is sleeved by a matched step according to the diameter selection. The pipe component does not need to be specially processed and welded with a flange end plate, and does not need to be connected with the test piece and the spherical hinge through bolts, so that the specification and the number of the spherical hinge are greatly reduced, and the working efficiency of the test is greatly improved.
Description
Technical Field
The utility model relates to a transmission line, space flight, machinery, building and bridge field, concretely relates to tubular member axle load test loading device.
Background
The steel pipe is widely applied to a plurality of steel structures such as a power transmission line iron tower, a building structure, a bridge, a communication tower and the like as a common stressed member. When the member is compressed, the design calculation of the steel pipe member is usually controlled by stability, i.e. the member failure is manifested as overall bending instability, and the bearing capacity is determined by the stable condition. The actual load bearing capacity of the axial compression member is affected by initial defects such as initial bending, initial eccentricity, residual stress, and the like, in addition to the sectional form and material. These effects are reflected by the overall stability factor phi. The value of the overall stability coefficient of the steel pipe member is obtained by testing the axial compression test of the member.
The conventional steel pipe member test loading device is shown in figure 2, a test piece is arranged in a test frame, two ends of the test piece are respectively connected with a pair of spherical hinged supports, a spherical hinge at one end is connected to the test frame, and a hydraulic cylinder for loading is connected to a spherical hinge at the other end. The connection between the steel pipe test piece and the spherical hinge is shown in fig. 3, the steel pipe test piece needs to be welded with an end plate with a bolt hole and connected with the spherical hinge through a bolt, and the structure type of the steel pipe test piece is similar to that of a flange. Different end plates need to be welded on steel pipe test pieces of different specifications, and matched spherical hinges are arranged. In order to meet the test requirements, test piece end plates and spherical hinged supports of different specifications need to be specially processed. The test device has many connecting pieces, is time-consuming to install and is provided with a series of spherical hinges.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, a loading device for a pipe member axial compression test is provided.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a pipe component axial compression test loading device, the loading device is two sets, and pipe component (4) cup joints between two sets of loading device, and every set of loading device all includes: a first hinge member (1), a second hinge member (2) and a connecting plate (3);
the first hinge component (1) is in fit hinge joint with the second hinge component (2), and the second hinge component (2) is connected with the connecting plate (3) through the first hinge component (1); the end of the second hinge component (2) which is not hinged with the first hinge component (1) is provided with a step structure, and the pipe component (4) selects matched steps to be sleeved according to the diameter.
Preferably, the stepped structure is a plurality of layers of stepped bosses, each layer of the bosses is cylindrical, the diameter of each layer of the cylinders decreases gradually from layer to layer, and the pipe member (4) is sleeved by selecting the bosses slightly smaller than the inner diameter according to the inner diameter.
Preferably, the middle gap between the pipe component (4) and the sleeving boss is 0.2 mm-20 mm, and the height of each layer of the boss is 1/100-2 times of the diameter of the boss.
Preferably, the stepped structure is a groove sleeve with a plurality of steps, each layer of the groove sleeve is cylindrical, the inner diameter of each layer of step decreases gradually layer by layer, and the pipe component (4) is inserted into the groove slightly larger than the outer diameter according to the outer diameter.
Preferably, the middle gap between the pipe member (4) and the insertion groove is 0.2 mm-20 mm, and the height of each layer of the groove is 1/100-2 times of the outer diameter of the pipe member (4).
Preferably, the first hinge member (1) and the second hinge member (2) are matched and hinged to form one end, the first hinge member (1) is provided with a convex surface block, the second hinge member (2) is provided with a concave surface block matched with the convex surface block or the first hinge member (1) is provided with a concave surface block, and the second hinge member (2) is provided with a convex surface block matched with the concave surface block.
Preferably, the convex surface block is a convex spherical block, the concave surface block is a concave spherical block matched with the convex spherical block, and the first hinge member (1) is in spherical hinge connection with the second hinge member (2).
Preferably, the convex surface block is a knife edge surface block, the concave surface block is a concave surface block matched with the knife edge surface block, and the first hinge member (1) is hinged with the second hinge member (2).
Preferably, the first hinge member (1) and the connecting plate (3) are fixedly connected by bolts. Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the utility model provides a pipe component axial compression test loading device, the loading device is two sets, and the pipe component cup joints between two sets of loading device, and every set of loading device all includes: a first hinge member, a second hinge member and a connecting plate; the first hinge member is in fit hinge connection with the second hinge member, and the second hinge member is connected with the connecting plate through the first hinge member; the end of the second hinge member, which is not hinged with the first hinge member, is provided with a step structure, and the pipe member is sleeved by a matched step according to the diameter selection. The pipe component does not need to be specially processed and welded with a flange end plate, and does not need to be connected with the test piece and the spherical hinge through bolts, so that the specification and the number of the spherical hinge are greatly reduced, and the working efficiency of the test is greatly improved.
(2) One set of device can satisfy the connection demand of the test piece of different specifications simultaneously, has avoided frequently changing the ball pivot, has greatly improved experimental work efficiency.
Drawings
FIG. 1 is a schematic view of the installation and use structure of the present invention;
FIG. 2 is a schematic view of an axial compression test loading device;
FIG. 3 is a schematic view of a test piece connected with a spherical hinge;
fig. 4 is a schematic view of a first structure of the present invention;
FIG. 5 is a schematic view of a second embodiment of the present invention;
FIG. 6 is a schematic view of a first structural form of the knife-edge hinge scheme of the present invention;
FIG. 7 is a schematic view of a second structure of the knife-edge hinge of the present invention;
FIG. 8 is a schematic view of a first embodiment of the grooved sleeve of the present invention;
FIG. 9 is a schematic view of a second embodiment of the grooved sleeve of the present invention;
FIG. 10 is a schematic view of a first structural form of the groove sleeve knife-edge hinge scheme of the present invention;
FIG. 11 is a schematic view of a second structural form of the groove sleeve knife-edge hinge scheme of the present invention;
figure 12 is the installation and use schematic diagram of the groove sleeve scheme of the utility model
In the figure, 1-first hinge member, 2-second hinge member, 3-connecting plate, 4-pipe member, 5-spherical hinge, 6-hydraulic cylinder, 7-end plate.
Detailed Description
The following examples are provided to further illustrate the embodiments of the present invention, but the present invention is not limited to these examples.
Example 1:
(1) structural description of the present invention
The utility model discloses a pipe member axial compression test loading device, as shown in FIG. 1 contain first articulated component 1, second articulated component 2 and connecting plate 3, FIG. 2 and FIG. 3 are the experimental loading device of steel pipe component commonly used at present and the steel pipe test piece is connected with the ball pivot, and the experimental loading device of present steel pipe component is more not enough, the utility model discloses improve on this basis. In the first structural form of the loading device for the axial compression test of the pipe member, as shown in fig. 4, a threaded hole is designed on one side of the plane of the first hinge member 1, the first hinge member is fixedly connected with the connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with the test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a step-shaped boss, the boss is provided with a plurality of layers, each layer is cylindrical, and the diameter of each layer of the cylinder is gradually reduced layer by layer.
The utility model discloses a pipe component axial compression test loading device can also contain first articulated component 1, second articulated component 2 and connecting plate 3 according to the structure that figure 5 shows. One side of the plane of the first hinge component 1 is provided with a threaded hole, and is fixedly connected with a connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with a test frame; the first hinge member 1 can be further provided with a hinged concave spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is provided with a hinged convex spherical block matched with the hinged concave spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical connection and can rotate in all directions; the other side of the second hinge component 2 is provided with a step-shaped boss, the boss is provided with a plurality of layers, each layer is cylindrical, and the diameter of each layer of cylinder decreases progressively from layer to layer.
The utility model comprises two types of spherical hinges shown in figures 4 and 5 and a cutter hinge type shown in figures 6 and 7. The following description will be made by taking fig. 4 as an example.
The utility model discloses a pipe component axial compression test loading device can also contain first articulated component 1, second articulated component 2 and connecting plate 3 according to the structure that fig. 8-11 show. One side of the plane of the first hinge component 1 is provided with a threaded hole, and is fixedly connected with a connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with a test frame; one end of the second hinge member 2 connected with the first hinge member 1 forms spherical hinge through the convex spherical block and the concave spherical block, and can rotate in all directions; or adopting knife edge hinge joint; the other side of the second hinge component 2 is provided with a step-shaped sleeve, the steps in the sleeve are provided with a plurality of layers, each layer is cylindrical, and the inner diameter of each layer of circular steps is gradually reduced layer by layer.
(2) The utility model discloses install and use utility model
The utility model discloses a pipe component axial compression test loading device's installation is used, and it is shown in figure 1. One side of the plane of the first hinge component 1 is provided with a threaded hole, and is fixedly connected with a connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with a test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a step-shaped boss, the boss is provided with a plurality of layers, each layer is cylindrical, and the diameter of each layer of the cylinder is gradually reduced layer by layer. And selecting a matched boss cylinder on the second hinge member 2 according to the inner diameter of the pipe test piece 4, and sleeving the pipe test piece 4 on the boss cylinder.
The utility model discloses a pipe component axial compression test loading device adopts recess sleeve's installation to use, and it is shown in figure 12. And selecting a matched stepped sleeve on the second hinge member 2 according to the outer diameter of the pipe test piece 4, and inserting the pipe test piece 4 into the groove.
Example 2
(1) As shown in fig. 1, a threaded hole is designed on one side of a plane of a first hinge member 1, the first hinge member is fixedly connected with a connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with a test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a step-shaped boss, the boss is provided with a plurality of layers, each layer is cylindrical, and the diameter of each layer of the cylinder is gradually reduced layer by layer. The specification of the steel pipe test piece is phi 273 multiplied by 6, the inner diameter is 261mm, and the steel pipe test piece is sleeved on a cylindrical boss with the diameter of 260 mm. The installation method of the two ends of the member is the same.
(2) As shown in fig. 1, a threaded hole is designed on one side of a plane of a first hinge member 1, the first hinge member is fixedly connected with a connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with a test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a step-shaped boss, the boss is provided with a plurality of layers, each layer is cylindrical, and the diameter of each layer of the cylinder is gradually reduced layer by layer. The specification of the steel pipe test piece is phi 168 multiplied by 5, the inner diameter is 158mm, and the steel pipe test piece is sleeved on a cylindrical boss with the diameter of 155 mm. The installation method of the two ends of the member is the same.
(3) As shown in fig. 12, a threaded hole is designed on one side of the plane of the first hinge member 1, and the first hinge member is fixedly connected with the connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with the test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a round table, a stepped groove sleeve is arranged in the second hinge component, the steps are provided with a plurality of layers, each layer is cylindrical, and the inner diameters of the cylindrical steps of each layer are gradually decreased layer by layer. The specification of the steel pipe test piece is phi 273 multiplied by 6, the outer diameter is 273mm, and the steel pipe test piece is inserted into a cylindrical groove with the inner diameter of 275 mm. The installation method of the two ends of the member is the same.
(4) As shown in fig. 12, a threaded hole is designed on one side of the plane of the first hinge member 1, and the first hinge member is fixedly connected with the connecting plate 3 through a bolt, and the connecting plate 3 is fixedly connected with the test frame; the first hinge member 1 can be a hinged convex spherical block at one end of the first hinge member 1 connected with the second hinge member 2, the second hinge member 2 is a hinged concave spherical block matched with the hinged convex spherical block, and the first hinge member 1 and the second hinge member 2 are in spherical hinge joint and can rotate in all directions; the other side of the second hinge component 2 is provided with a round table, a stepped groove sleeve is arranged in the second hinge component, the steps are provided with a plurality of layers, each layer is cylindrical, and the inner diameters of the cylindrical steps of each layer are gradually decreased layer by layer. The specification of the steel pipe test piece is phi 168 multiplied by 5, the outer diameter is 168mm, and the steel pipe test piece is inserted into a cylindrical groove with the inner diameter of 170 mm. The installation method of the two ends of the member is the same.
Example 3
(1) The boss structure type of the loading device for the axial compression test of the pipe member comprises but is not limited to the structure types shown in figures 4-7, and the steel pipe test piece is sleeved on the matched boss according to the inner diameter, and the test piece mounting method is shown in figure 1;
(2) the structural form of the groove of the loading device for the axial compression test of the pipe member is shown in figures 8-11, the structural form is similar to the principle of (1), the structural form is a concave step form, and the installation method that the steel pipe test piece is inserted into the groove according to the size of the outer diameter is shown in figure 12.
(3) The boss structure of the loading device for the axial compression test of the pipe component has the same or different heights of each layer of bosses, the diameter of a boss cylinder is smaller than the inner diameter of the steel pipe, and the middle gap is 0.2-20 mm; the height of each layer is 1/100 to 2 times the boss diameter;
(4) the groove step sleeve structure of the loading device for the pipe component axial compression test has the advantages that the heights of steps of each layer are the same or different, the inner diameter of the cylindrical surface of each layer of groove step is larger than the outer diameter of a steel pipe, and the middle gap is 0.2-20 mm; the height of each layer is 1/100 to 2 times of the outer diameter of the steel pipe;
(5) the utility model includes but is not limited to spherical hinge and knife edge hinge structure types;
(6) the utility model is suitable for the section types of the test components, including but not limited to round tubes, square tubes, elliptical tubes, round rods, square rods, rectangular section tubes, etc.;
(7) the utility model discloses test device's material contains but not limited to alloy steel, high strength low alloy steel, carbon steel, stainless steel, aluminum alloy, copper etc..
It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the scope of the claims of the present invention pending from the application.
Claims (9)
1. The utility model provides a pipe component axial compression test loading device which characterized in that, the loading device is two sets, and pipe component (4) cup joints between two sets of loading device, and every set of loading device all includes: a first hinge member (1), a second hinge member (2) and a connecting plate (3);
the first hinge component (1) is in fit hinge joint with the second hinge component (2), and the second hinge component (2) is connected with the connecting plate (3) through the first hinge component (1); the end of the second hinge component (2) which is not hinged with the first hinge component (1) is provided with a step structure, and the pipe component (4) selects matched steps to be sleeved according to the diameter.
2. The tube member axial compression test loading device of claim 1, wherein the step structure is a plurality of layers of step-shaped bosses, each layer of the bosses is cylindrical, the diameter of each layer of the cylinders decreases gradually from layer to layer, and the tube member (4) is sleeved by selecting the bosses slightly smaller than the inner diameter according to the inner diameter.
3. The tube member axial compression test loading device of claim 2, wherein the middle gap between the tube member (4) and the sleeving boss is 0.2 mm-20 mm, and the height of each layer of the boss is 1/100-2 times of the diameter of the boss.
4. The tube member axial compression test loading device of claim 1, wherein the step structure is a groove sleeve with a plurality of steps, each layer of the groove sleeve is cylindrical, the inner diameter of each layer of the steps decreases gradually, and the tube member (4) is inserted by selecting a groove with a slightly larger outer diameter according to the outer diameter.
5. A tube member axial compression test loading device as claimed in claim 4, wherein the middle gap between the tube member (4) and the insertion groove is 0.2 mm-20 mm, and the height of each layer of the groove is 1/100-2 times of the outer diameter of the tube member (4).
6. A pipe member axial compression test loading device as claimed in claim 1, wherein the first hinge member (1) and the second hinge member (2) are matched and hinged at one end, the first hinge member (1) is provided with a convex surface block, the second hinge member (2) is provided with a concave surface block matched with the convex surface block or the first hinge member (1) is provided with a concave surface block, and the second hinge member (2) is provided with a convex surface block matched with the concave surface block.
7. A tube member axial compression test loading unit as claimed in claim 6, wherein said convex surface block is a convex spherical block, said concave surface block is a concave spherical block matching with said convex spherical block, and said first hinge member (1) is ball-hinged with said second hinge member (2).
8. The pipe member axial compression test loading device of claim 6, wherein the convex surface block is a knife-edge surface block, the concave surface block is a concave surface block matched with the knife-edge surface block, and the first hinge member (1) is in knife-hinge connection with the second hinge member (2).
9. The pipe member axial compression test loading device of claim 1, wherein the first hinge member (1) and the connecting plate (3) are fixedly connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006250.3U CN212722327U (en) | 2020-06-04 | 2020-06-04 | Pipe component axial compression test loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006250.3U CN212722327U (en) | 2020-06-04 | 2020-06-04 | Pipe component axial compression test loading device |
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| Publication Number | Publication Date |
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| CN212722327U true CN212722327U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021006250.3U Active CN212722327U (en) | 2020-06-04 | 2020-06-04 | Pipe component axial compression test loading device |
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| CN (1) | CN212722327U (en) |
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- 2020-06-04 CN CN202021006250.3U patent/CN212722327U/en active Active
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