Compression resistance testing device

Abstract

The utility model discloses a compression resistance testing device, which relates to the technical field of steel structure compression resistance testing devices and comprises a testing frame body, a height limiting unit, a liquid pressing unit used for rapid adjustment and a passive unit used for distance and angle fixing. A testing mechanism is arranged at the upper end in the testing frame body, a pressure sensor is installed at the testing end of the testing mechanism, and a supporting pipe is inserted into the testing mechanism through a pin shaft; the height limiting unit comprises a gear with a stud mounted at the lower end in the test frame body, and the gear with the stud is rotationally connected with a first hollow rod; according to the utility model, after the height limiting plate and the pitch locking toothed plate extend out, the tapered stud continuously gets close to the steel structure to press and limit the steel structure, and the pitch locking toothed plate is matched with the pitch adjusting rack to press the pitch adjusting rack downwards, so that the angle locking toothed plate is matched with the gear with the stud to complete all locking of the overall angle, distance (limiting radius) and height, and the adjustment is convenient and the operation is simple; and the special-shaped steel structure can be limited more conveniently, and the applicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure compression test devices, in particular to a compression test device. Background Art

[0002] Steel structure is a building structure system built with steel as the main material, and is an indispensable part of modern construction projects. Steel structure compression test equipment is a professional device used to measure and evaluate the performance of steel under compression. Steel structure compression test equipment is essential to ensure building safety and optimize structural design. By performing compression tests on steel, engineers can understand the performance of the material in actual use, so as to design safer and more economical structures.

[0003] In the prior art, a compressive strength testing device for a steel structure disclosed in the patent with announcement number CN215931533U mainly clamps and fixes the steel structure by downward movement of a certain number of clamping plates.

[0004] It is known from the technology in related fields that for compression test devices, when conducting compression test on steel structure, the steel structure must be limited first to prevent uneven force on the steel structure when pressure is applied. When positioning special-shaped steel structures, most devices are often not comprehensive enough in positioning, and there are certain safety hazards during compression test. The positioning effect is poor and it is inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a compression test device in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A compression test device comprises a test frame, a height limiting unit, a hydraulic unit for rapid adjustment, and a passive unit for determining distance and angle;

[0008] Test frame: A test mechanism is provided at the upper end inside, a pressure sensor is installed at the test end of the test mechanism, and a support tube is plugged on the test mechanism through a pin shaft; when a compression test is performed on a steel structure, the positions of several support tubes are first adjusted by plugging and pulling out the pin shaft to facilitate supporting the lower side of the steel structure to be tested, and they can be removed when not needed. When a compression test is performed, the test end of the test mechanism, i.e. the lower end shown in the figure, moves downward, and the pressure sensor and the like carried by the test end work. During the continuous pressure application process, the compression test of the steel structure can be completed.

[0009] The height limiting unit comprises a column gear installed at the lower end of the test frame, the column gear is rotatably connected to a first hollow rod, the first hollow rod is slidably connected to a second hollow rod perpendicular to the first hollow rod, the upper side of one end of the second hollow rod close to the test position is slidably connected to a height limiting plate, and threaded holes are equidistantly provided at one end of the height limiting plate close to the test position, and conical studs are threadedly connected in the threaded holes; the first hollow rod rotates around the test frame fixed on the test frame, and the conical stud can be threadedly connected to the threaded hole corresponding to the height of the steel structure to be tested by rotating the conical stud, and when the liquid in the second hollow rod is under pressure, the height limiting plate acts as a piston and approaches the steel structure to be tested, so that the conical surface of the conical stud can continuously contact the edge of the steel structure, and the diameter of the conical stud gradually increases, and when approaching the steel structure, the edge of the steel structure can be pressed and limited.

[0010] The liquid pressing unit comprises a liquid pressing plate slidably connected to the inside of the second hollow rod; the liquid pressing plate can be moved to apply pressure to the liquid in the second hollow rod.

[0011] Passive unit: includes a pitch-adjusting rack slidably connected to the inside of the first hollow rod, and a locking angle tooth plate is slidably connected to the inside of the first hollow rod. When the first hollow rod is rotated to a suitable angle, the pitch-adjusting rack is squeezed and moved downward, thereby squeezing the liquid in the first hollow rod, so that the locking angle tooth plate approaches the column gear and meshes with it.

[0012] Furthermore, the liquid pressure unit also includes a first elastic member with one end connected to one side of the liquid pressure plate, the other end of the first elastic member is connected to the inside of the second hollow rod, and a U-shaped pressure rod is installed on the other side of the liquid pressure plate. The elastic force of the first elastic member can be used to move the liquid pressure plate to the left to compress the liquid in the second hollow rod. When it is necessary to adjust and limit other steel structures, the U-shaped pressure rod is pressed to retract it into the second hollow rod, and the liquid in the second hollow rod changes (Pascal's law: in a closed container, pressure changes at any point can be transmitted to other positions in the container, which means that if the piston at one end is pulled out, the resulting pressure drop will be transmitted to the entire system, including the piston on the opposite side), and the height limit plate can be retracted.

[0013] Furthermore, the passive unit further comprises a second elastic member with one end connected to the lower end of the pitch-adjusting rack, the other end of the second elastic member is connected to the lower end of the interior of the first hollow rod, and the lower side of the interior of the second hollow rod is connected to a pitch-locking tooth plate for sliding up and down. The elastic force of the second elastic member is smaller than that of the first elastic member. In a natural state, after the height-limiting plate and the pitch-locking tooth plate extend, the pitch-locking tooth plate can press the pitch-adjusting rack downward after cooperating with the pitch-adjusting rack, so as to realize the change of the liquid in the first hollow rod and complete the overall locking of the angle, distance (limit radius) and height.

[0014] Furthermore, the first hollow rod and the second hollow rod are filled with incompressible liquid. The first hollow rod and the second hollow rod are cavities filled with incompressible liquid, and the height limiting plate, the pitch locking tooth plate, the pitch adjusting rack and the angle locking tooth plate all act as pistons.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. In the utility model, when the conical surface of the conical stud continuously contacts the edge of the steel structure, the circumferential diameter of the conical stud in contact with the steel structure gradually increases, which can compress and limit the edge of the steel structure to prevent it from being displaced due to uneven force during the compression test, thereby improving the safety of the surrounding working environment, achieving better positioning effect, and being more convenient to use.

[0017] 2. In the utility model, in the natural state, after the height limit plate and the locking tooth plate are extended, the locking tooth plate and the pitch-adjusting rack can be matched to press the pitch-adjusting rack downward, so as to realize the change of the liquid in the first hollow rod and complete the locking of the overall angle, distance (limiting radius) and height. It is easy to adjust and simple to operate, and it is more convenient to limit the special-shaped steel structure, and it has stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of a compression test device described in the utility model;

[0020] Figure 2 It is a structural schematic diagram of the cooperation between the first hollow rod and the second hollow rod of a compression test device described in the utility model;

[0021] Figure 3 It is a schematic diagram of the structure inside the first hollow rod of a compression test device described in the utility model;

[0022] Figure 4 It is a schematic diagram of the structure inside the second hollow rod of a compression test device described in the utility model;

[0023] Figure 5 This is a compression test device described in the utility model Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Test frame; 2. Test mechanism; 3. Gear with column; 4. First hollow rod; 5. Second hollow rod; 6. Height limit plate; 7. Threaded hole; 8. Conical stud; 9. Liquid pressure plate; 10. First elastic member; 11. U-shaped pressure rod; 12. Pitch-adjusting rack; 13. Second elastic member; 14. Pitch-locking tooth plate; 15. Angle-locking tooth plate; 16. Support tube. DETAILED DESCRIPTION

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The utility model is further described below in conjunction with the accompanying drawings: Example

[0029] like Figure 1-Figure 5 As shown, a compression test device includes a test frame 1, a height limiting unit, a hydraulic unit for rapid adjustment, and a passive unit for determining the distance and angle;

[0030] Test frame 1: The upper end of the interior is provided with a test mechanism 2, the test end of the test mechanism 2 is installed with a pressure sensor, and a support tube 16 is plugged into the test mechanism 2 through a pin shaft; Figure 1As shown, when a compression test is performed on a steel structure, the positions of several support tubes 16 are first adjusted by plugging and pulling out the pin shafts to facilitate supporting the lower side of the steel structure to be tested. They can be removed when not needed. When the compression test is performed, the test end of the test mechanism 2, i.e., the lower end shown in the figure, moves downward, and the pressure sensor and the like carried by the test end work. During the continuous pressure application process, the compression test of the steel structure can be completed.

[0031] The height limiting unit comprises a column gear 3 installed at the lower end of the test frame 1, a first hollow rod 4 is rotatably connected to the column gear 3, a second hollow rod 5 perpendicular to the first hollow rod 4 is slidably connected to the first hollow rod 4, a height limiting plate 6 is slidably connected to the upper side of one end of the second hollow rod 5 close to the test position, threaded holes 7 are equidistantly opened at one end of the height limiting plate 6 close to the test position, and a conical stud 8 is threadedly connected to the inner thread of the threaded hole 7; Figure 1-Figure 5 As shown, the first hollow rod 4 rotates around the test frame 1 fixed on the test frame 1, which is convenient for adjusting the limiting angle of the steel structure. The conical stud 8 can be threadedly connected with the threaded hole 7 corresponding to the height of the steel structure to be tested by rotating. When the liquid in the second hollow rod 5 is pressurized, the height limiting plate 6 acts as a piston and approaches the steel structure to be tested, so that the conical surface of the conical stud 8 can continuously contact the edge of the steel structure, and the diameter of the conical stud 8 gradually increases. When approaching the steel structure, the edge of the steel structure can be pressed and limited to prevent it from being displaced due to uneven force during the compression test, thereby improving the safety of the surrounding working environment, achieving better positioning effect, and being more convenient to use.

[0032] The liquid pressing unit comprises a liquid pressing plate 9 which is slidably connected to the inside of the second hollow rod 5; Figure 4 As shown, by moving the liquid pressure plate 9, pressure can be applied to the liquid in the second hollow rod 5, so as to facilitate the extension of the height limiting plate 6.

[0033] Passive unit: includes a pitch-adjusting rack 12 slidably connected to the first hollow rod 4, and a locking angle tooth plate 15 is slidably connected to the first hollow rod 4. Figure 3 , Figure 4 and Figure 5 As shown, when the first hollow rod 4 is rotated to a suitable angle, the pitch-adjusting rack 12 is squeezed and moved downward, thereby squeezing the liquid in the first hollow rod 4, so that the angle-locking toothed plate 15 is close to the column gear 3 and meshes with it to achieve angle fixation. When positioning special-shaped steel structures, the position adjustment of the limit position is more convenient.

[0034] The liquid pressing unit further comprises a first elastic member 10 connected at one end to one side of the liquid pressing plate 9, the other end of the first elastic member 10 is connected to the inside of the second hollow rod 5, and a U-shaped pressing rod 11 is installed on the other side of the liquid pressing plate 9. Figure 4As shown, in the natural state, the elastic force of the first elastic member 10 can be used to move the liquid pressure plate 9 to the left, thereby compressing the liquid in the second hollow rod 5. When it is necessary to adjust and limit the position of other steel structures, the U-shaped pressure rod 11 is pressed to retract it into the second hollow rod 5, and the liquid in the second hollow rod 5 changes (Pascal's law: in a closed container, pressure changes at any point can be transmitted to other positions in the container, which means that if the piston at one end is pulled out, the resulting pressure drop will be transmitted to the entire system, including the piston on the opposite side), and the height limiting plate 6 can be retracted, and adjustment can be made, which is more convenient.

[0035] The passive unit also includes a second elastic member 13 connected at one end to the lower end of the pitch-adjusting rack 12, the other end of the second elastic member 13 is connected to the inner lower end of the first hollow rod 4, and the inner lower side of the second hollow rod 5 is slidably connected to a pitch-locking tooth plate 14. Figure 1-Figure 5 As shown, the elastic force of the second elastic member 13 is smaller than that of the first elastic member 10. Therefore, in the natural state, after the height limiting plate 6 and the locking gear plate 14 are extended, the locking gear plate 14 cooperates with the pitch adjusting rack 12 to press the pitch adjusting rack 12 downward, thereby realizing the change of the liquid in the first hollow rod 4 and completing the overall locking of the angle, distance limiting radius and height. It is easy to adjust and simple to operate, and it is more convenient to limit the special-shaped steel structure, and it has stronger applicability.

[0036] The interior of the first hollow rod 4 and the second hollow rod 5 are both filled with incompressible liquid. Figure 1-Figure 5 As shown, the first hollow rod 4 and the second hollow rod 5 are cavities and are filled with incompressible liquid. The height limiting plate 6, the locking gear plate 14, the spacing rack 12 and the locking angle gear plate 15 all act as pistons to ensure the sealing effect of the overall liquid and thus stabilize the use effect.

[0037] Working principle: When in use, Figure 1-Figure 5As shown, when the steel structure is subjected to a compression test, the positions of the support tubes 16 are first adjusted by plugging and pulling out the pins to facilitate supporting the lower side of the steel structure to be tested. When not needed, the support tubes 16 can be removed. After the steel structure to be tested is placed on the support tubes 16, the second hollow rod 5 is held and the U-shaped pressure rod 11 is pressed at the same time to retract it into the second hollow rod 5. The angle of the first hollow rod 4, the position of the second hollow rod 5 and the height of the conical stud 8 can be adjusted simultaneously, that is, the angle, distance limit radius and height of the conical stud 8 are adjusted to a suitable value. After the test piece is in the proper position, the U-shaped pressure rod 11 is released, and the elastic force of the first elastic member 10 is used to move the liquid pressure plate 9 to the left to compress the liquid in the second hollow rod 5. The height limiting plate 6 acts as a piston and approaches the steel structure to be tested, so that the conical surface of the conical stud 8 can continuously contact the edge of the steel structure, and the diameter of the conical stud 8 gradually increases. When approaching the steel structure, the edge of the steel structure can be pressed and limited to prevent it from being displaced due to uneven force during the compression test, thereby improving the safety of the surrounding working environment, achieving a better positioning effect, and being more convenient to use.

[0038] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the elastic force of the second elastic member 13 is smaller than that of the first elastic member 10. Therefore, in the natural state, after the height limiting plate 6 and the locking tooth plate 14 are extended, the locking tooth plate 14 can press the adjusting rack 12 downward after cooperating with the adjusting rack 12, so as to realize the change of the liquid in the first hollow rod 4, complete the locking of the overall angle, the distance limiting radius and the height, and the adjustment is convenient, the operation is simple, and it is more convenient to limit the special-shaped steel structure, and the applicability is stronger;

[0039] like Figure 1 As shown, after the steel structure is positioned, when the compression test is carried out, the test end of the test mechanism 2, that is, the lower end shown in the figure, moves downward, and the pressure sensor and other devices on the test end work. During the continuous pressure application process, the compression test of the steel structure can be completed.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A compression test device, characterized in that: include: A test frame (1), a height limiting unit, a hydraulic unit for rapid adjustment, and a passive unit for determining the distance and angle; The test frame (1) has a test mechanism (2) at its upper end, a pressure sensor is installed at the test end of the test mechanism (2), and a support tube (16) is plugged into the test mechanism (2) via a pin shaft; The height limiting unit comprises a column gear (3) mounted at the lower end of the test frame (1), the column gear (3) being rotatably connected to a first hollow rod (4), the first hollow rod (4) being slidably connected to a second hollow rod (5) perpendicular thereto, the upper side of an end of the second hollow rod (5) close to the test position being slidably connected to a height limiting plate (6), the end of the height limiting plate (6) close to the test position being equidistantly provided with threaded holes (7), the threaded holes (7) being internally threadedly connected to conical studs (8); A liquid pressing unit comprising a liquid pressing plate (9) slidably connected to the inside of the second hollow rod (5); The passive unit comprises a pitch-adjusting rack (12) slidably connected up and down inside the first hollow rod (4); an angle-locking tooth plate (15) is slidably connected inside the first hollow rod (4).

2. A compression test device according to claim 1, characterized in that: The liquid pressing unit further comprises a first elastic member (10) having one end connected to one side of the liquid pressing plate (9), the other end of the first elastic member (10) being connected to the inside of the second hollow rod (5), and a U-shaped pressing rod (11) being installed on the other side of the liquid pressing plate (9).

3. A compression test device according to claim 1, characterized in that: The passive unit further comprises a second elastic member (13) having one end connected to the lower end of the pitch-adjusting rack (12); the other end of the second elastic member (13) is connected to the inner lower end of the first hollow rod (4); and a pitch-locking tooth plate (14) is slidably connected to the inner lower side of the second hollow rod (5).

4. A compression test device according to claim 1, characterized in that: The interior of the first hollow rod (4) and the second hollow rod (5) are both filled with incompressible liquid.

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