Large-diameter tubular pile bending test device

Abstract

The utility model discloses a large-diameter tubular pile bending test device which comprises a test bed, an adjusting mechanism is arranged in the middle of the top of the test bed, a first test rack is arranged at one end of the top of the test bed through the adjusting mechanism, a second test rack is arranged at the other end of the top of the test bed through the adjusting mechanism, and supporting frames are arranged on the two opposite sides of the top of the test bed. A top plate is arranged at the top of the supporting frame, a hydraulic cylinder is arranged in the middle of the top of the top plate, a hydraulic rod is arranged at the output end of the hydraulic cylinder, a test pressing plate is arranged at the bottom of the hydraulic rod through a connecting mechanism, a test probe is embedded in the middle of the bottom of the test pressing plate through a containing cavity, and a control panel is arranged at one end of the top of the top plate. According to the utility model, a series of structures are arranged, so that the bending test operation is stable, the adjustment of the test support distance is realized, the bending test of large-diameter pipe piles with different support distances is met, the test has comparability, the adjustment is convenient and accurate, and the test pressing plate is convenient to disassemble, assemble and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of bending resistance test, in particular to a bending resistance test device for large-diameter pipe piles. Background Art

[0002] Pipe piles are divided into Type A, Type AB, Type B and Type C according to their bending performance or effective prestress value. Pipe piles are used to strengthen building structures, such as the foundation piles of bridges, railways, high-rise buildings, docks, etc. The performance of pipe piles has a great influence on the structural strength of the building. Therefore, after the pipe piles are produced, they need to be tested for bending strength to check whether they meet the standards.

[0003] At present, when conducting bending tests on large-diameter pipe piles, although the bending tests on large-diameter pipe piles can be carried out by cooperating with the test frame and the pressure plate, the spacing of the test supports for large-diameter pipe piles on the test equipment is fixed. Therefore, there is a lack of comparison of bending tests with different test support spacings, resulting in a single bending test for large-diameter pipe piles, and the test pressure plate is fixed on the bending downward pressure driving device, which is inconvenient to disassemble and assemble. Utility Model Content

[0004] The utility model aims to provide a large-diameter pipe pile bending test device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-diameter pipe pile bending test device, comprising a test bench, an adjusting mechanism is provided in the middle of the top of the test bench, a No. 1 test frame is provided at one end of the top of the test bench through the adjusting mechanism, a No. 2 test frame is provided at the other end of the top of the test bench through the adjusting mechanism, support frames are provided on opposite sides of the top of the test bench, a top plate is provided on the top of the support frame, a hydraulic cylinder is provided in the middle of the top of the top plate, a hydraulic rod is provided at the output end of the hydraulic cylinder, a test pressure plate is provided at the bottom of the hydraulic rod through a connecting mechanism, an experimental probe is embedded in the accommodating cavity in the middle of the bottom of the test pressure plate, and a control panel is provided at one end of the top of the top plate.

[0006] Preferably, the tops of the No. 1 test frame and the No. 2 test frame and the bottoms of the test platen are both arranged in arc-shaped groove structures, and the No. 1 test frame and the No. 2 test frame are symmetrically arranged with respect to the test platen.

[0007] Preferably, the adjustment mechanism includes an adjustment slot, a bidirectional screw, a threaded seat and a servo motor. An adjustment slot is provided in the middle of the top of the test bench, and a bidirectional screw is provided inside the adjustment slot. Threaded seats are provided at the bottom of the No. 1 test frame and the No. 2 test frame. There are two threaded seats, and the threads of the two threaded seats are symmetrically arranged on the bidirectional screw. One end of the bidirectional screw is connected to the output end of the servo motor on one side of the test bench through a coupling.

[0008] Preferably, an infrared ranging probe is provided under the arc-shaped groove on the side close to the No. 1 test frame and the No. 2 test frame, and the servo motor, infrared ranging probe and experimental probe are all electrically connected to the control panel, and a display screen is provided on the control panel.

[0009] Preferably, the centers of the arc-shaped grooves of the No. 1 test frame and the No. 2 test frame and the center of the arc-shaped groove of the test pressure plate are arranged on the same axis.

[0010] Preferably, the connecting mechanism includes a connecting plate, a fixing plate, bolts and nuts. A connecting plate is provided on the top of the test pressure plate, a fixing plate is provided on the bottom of the hydraulic rod, bolts are provided at opposite ends of the fixing plate, connecting holes corresponding to the bolts are provided at opposite ends of the connecting plate, and the connecting plate is fixed to the fixing plate by bolts passing through the connecting holes through nuts.

[0011] Preferably, the width of the fixing plate is smaller than the opening width of the arc-shaped groove structure at the top of the No. 1 test frame and the No. 2 test frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This large-diameter pipe pile bending test device cooperates with the No. 1 test frame and the No. 2 test frame on the test bench through the hydraulic cylinder, hydraulic rod and test pressure plate arranged on the top plate to realize the bending test of the large-diameter pipe pile under the test pressure plate on the test frame. The arc-shaped grooves of the test frame and the test pressure plate make the bending test stable. Combined with the adjustment mechanism arranged on the test bench, the bidirectional screw in the adjustment groove cooperates with the servo motor and the threaded seat at the bottom of the test frame to realize the adjustment of the test support spacing between the No. 1 test frame and the No. 2 test frame, thereby meeting the bending test of large-diameter pipe piles with different support spacings. The test is comparative, and the adjustment is convenient and accurate.

[0014] 2. This large-diameter pipe pile bending test device realizes the detachable design of the test pressure plate and the fixing plate by means of the connection plate arranged on the top of the test pressure plate, the fixing plate at the bottom of the hydraulic rod, and the combination of bolts and nuts. The test pressure plate is easy to disassemble and replace, and is firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the No. 1 test stand in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the test pressure plate in the utility model.

[0018] In the figure: 1. test bench; 11. adjustment slot; 12. bidirectional screw; 13. threaded seat; 14. servo motor; 2. test frame No. 1; 21. test frame No. 2; 3. support frame; 4. top plate; 5. hydraulic cylinder; 51. hydraulic rod; 6. test pressure plate; 61. experimental probe; 62. connecting plate; 63. fixing plate; 64. bolts; 65. nuts; 7. control panel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 according to specific circumstances.

[0022] Example 1

[0023] like Figures 1 to 3As shown, the large-diameter pipe pile bending test device of this embodiment includes a test bench 1, an adjusting mechanism is provided in the middle of the top of the test bench 1, a No. 1 test frame 2 is provided at one end of the top of the test bench 1 through the adjusting mechanism, and a No. 2 test frame 21 is provided at the other end of the top of the test bench 1 through the adjusting mechanism, support frames 3 are provided on both opposite sides of the top of the test bench 1, a top plate 4 is provided on the top of the support frame 3, a hydraulic cylinder 5 is provided in the middle of the top of the top plate 4, a hydraulic rod 51 is provided at the output end of the hydraulic cylinder 5, a test pressure plate 6 is provided at the bottom of the hydraulic rod 51 through a connecting mechanism, an experimental probe 61 is embedded in the middle of the bottom of the test pressure plate 6 through an accommodating cavity, and a control panel 7 is provided at one end of the top of the top plate 4 to realize the bending test of the large-diameter pipe pile by pressing down the test pressure plate on the test frame, and to realize the adjustment of the test support spacing between the No. 1 test frame 2 and the No. 2 test frame 21, so as to meet the bending test of large-diameter pipe piles with different support spacings, and the adjustment is convenient and accurate, and the test pressure plate 6 is easy to disassemble and replace.

[0024] Specifically, the tops of the No. 1 test frame 2 and the No. 2 test frame 21 and the bottom of the test platen 6 are all arranged in a circular arc-shaped groove structure. The No. 1 test frame 2 and the No. 2 test frame 21 are symmetrically arranged about the test platen 6. The test platen 6 adopts a large-diameter circular arc-shaped groove structure, so that the No. 1 test frame 2, the No. 2 test frame 21 and the test platen 6 can limit the large-diameter pipe piles through the circular arc-shaped grooves.

[0025] Furthermore, the adjustment mechanism includes an adjustment slot 11, a bidirectional screw 12, a threaded seat 13 and a servo motor 14. An adjustment slot 11 is provided in the middle of the top of the test bench 1, and a bidirectional screw 12 is provided inside the adjustment slot 11. Threaded seats 13 are provided at the bottoms of the No. 1 test frame 2 and the No. 2 test frame 21. There are two threaded seats 13, and the two threaded seats 13 are symmetrically arranged on the bidirectional screw 12. One end of the bidirectional screw 12 is connected to the output end of the servo motor 14 on one side of the test bench 1 through a coupling. The bottoms of the No. 1 test frame 2 and the No. 2 test frame 21 are arranged in sliding contact with the top of the test bench 1. The servo motor 14 on the test bench 1 drives the bidirectional screw 12 in the adjustment slot 11 to rotate, and the two threaded seats 13 symmetrically arranged on the bidirectional screw 12 drive the No. 1 test frame 2 and the No. 2 test frame 21 to move and adjust on the top of the test bench 1, that is, the adjustment of the test support spacing between the No. 1 test frame 2 and the No. 2 test frame 21 on the test bench 1 is tested through the adjustment mechanism.

[0026] Furthermore, infrared ranging probes are provided under the arc-shaped grooves on the side where the No. 1 test frame 2 and the No. 2 test frame 21 are close to each other. The servo motor 14, the infrared ranging probe and the experimental probe 61 are all electrically connected to the control panel 7. A display screen is provided on the control panel 7. The output end of the infrared ranging probe is electrically connected to the input end of the control panel 7. The output end of the control panel 7 is electrically connected to the input end of the servo motor 14, so that the servo motor 14 for adjusting the distance of the test frame can be controlled conveniently by the infrared ranging probe. The infrared ranging probe measures the distance between the No. 1 test frame 2 and the No. 2 test frame 21.

[0027] Furthermore, the centers of the arc-shaped grooves of the No. 1 test frame 2 and the No. 2 test frame 21 and the arc-shaped grooves of the test pressure plate 6 are arranged on the same axis, so that the test pressure plate 6 can align the large-diameter pipe piles on the No. 1 test frame 2 and the No. 2 test frame 21 for downward compression bending test.

[0028] The method of using this embodiment is as follows: the large diameter pipe pile to be tested is placed in the circular arc groove of the No. 1 test frame 2 and the No. 2 test frame 21, the hydraulic cylinder 5 on the top plate 4 cooperates with the hydraulic rod 51 to drive the test pressure plate 6 to move downward, the circular arc groove of the test pressure plate 6 is engaged with the top of the large diameter pipe pile, the test probe 61 in the middle of the bottom of the circular arc groove of the test pressure plate 6 corresponds to the top of the large diameter pipe pile, and the large diameter pipe pile on the test frame is pressed down under the action of the hydraulic cylinder 5 for the bending test, the servo motor 14 on the test bench 1 drives the bidirectional screw 12 in the adjusting slot 11 to rotate, and the threads on the bidirectional screw 12 are symmetrical. The two threaded seats 13 are arranged to drive the No. 1 test frame 2 and the No. 2 test frame 21 to move and adjust on the top of the test bench 1, that is, the test support spacing between the No. 1 test frame 2 and the No. 2 test frame 21 on the test bench 1 is adjusted by the adjustment mechanism, so that the bending downward test operation of the same batch of large-diameter pipe piles with different test support spacings can be carried out, so that the test has a comparison, and the debugged test support spacing between the No. 1 test frame 2 and the No. 2 test frame 21 is measured by an infrared ranging probe, so that the adjustment between the No. 1 test frame 2 and the No. 2 test frame 21 is convenient and accurate, which meets the bending test of large-diameter pipe piles with different support spacings.

[0029] Example 2

[0030] The structure of the large diameter pipe pile bending test device of this embodiment is basically the same as that of the large diameter pipe pile bending test device of embodiment 1, except that the connection mechanism includes a connection plate 62, a fixing plate 63, a bolt 64 and a nut 65 (see Figures 1 to 3). A connecting plate 62 is provided at the top of the test pressure plate 6, a fixing plate 63 is provided at the bottom of the hydraulic rod 51, bolts 64 are provided at opposite ends of the fixing plate 63, connecting holes corresponding to the bolts 64 are provided at opposite ends of the connecting plate 62, the connecting holes penetrate the bolts 64 and are fixed to the fixing plate 63 through nuts 6, and the connecting plate 62 arranged at the top of the test pressure plate 6, the fixing plate 63 at the bottom of the hydraulic rod 51, the bolts 64 and the nuts 65 cooperate to realize the detachable design of the test pressure plate 6 and the fixing plate 63, and the test pressure plate 6 is easy to disassemble and replace, and is firmly installed.

[0031] Specifically, the width of the fixed plate 63 is smaller than the opening width 5 of the arc-shaped groove structure at the top of the No. 1 test frame 2 and the No. 2 test frame 21, so that when the No. 1 test frame 2 and the No. 2 test frame 21 are moved to be located below the test pressure plate 6, the test pressure plate 6 can be pressed down into the arc-shaped groove of the test frame and contact the large-diameter pipe pile.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large diameter pipe pile bending test device, comprising a test bench (1), characterized in that: An adjustment mechanism is provided in the middle of the top of the test bench (1); a No. 1 test frame (2) is provided at one end of the top of the test bench (1) through the adjustment mechanism; a No. 2 test frame (21) is provided at the other end of the top of the test bench (1) through the adjustment mechanism; support frames (3) are provided on opposite sides of the top of the test bench (1); a top plate (4) is provided on the top of the support frame (3); a hydraulic cylinder (5) is provided in the middle of the top of the top plate (4); a hydraulic rod (51) is provided at the output end of the hydraulic cylinder (5); a test pressure plate (6) is provided at the bottom of the hydraulic rod (51) through a connecting mechanism; an experimental probe (61) is embedded in the middle of the bottom of the test pressure plate (6) through a receiving cavity; and a control panel (7) is provided at one end of the top of the top plate (4).

2. A large diameter pipe pile bending test device according to claim 1, characterized in that: The tops of the No. 1 test frame (2) and the No. 2 test frame (21) and the bottom of the test platen (6) are both arranged in a circular arc-shaped groove structure, and the No. 1 test frame (2) and the No. 2 test frame (21) are symmetrically arranged with respect to the test platen (6).

3. A large diameter pipe pile bending test device according to claim 2, characterized in that: The adjustment mechanism comprises an adjustment slot (11), a bidirectional screw (12), a threaded seat (13) and a servo motor (14); an adjustment slot (11) is arranged in the middle of the top of the test bench (1); a bidirectional screw (12) is arranged inside the adjustment slot (11); a threaded seat (13) is arranged at the bottom of the No. 1 test stand (2) and the No. 2 test stand (21); two threaded seats (13) are arranged; the two threaded seats (13) are symmetrically arranged on the bidirectional screw (12); one end of the bidirectional screw (12) is connected to the output end of the servo motor (14) on one side of the test bench (1) through a coupling.

4. A large diameter pipe pile bending test device according to claim 3, characterized in that: An infrared distance measuring probe is provided below the arc-shaped groove on the side close to the first test frame (2) and the second test frame (21). The servo motor (14), the infrared distance measuring probe and the experimental probe (61) are all electrically connected to the control panel (7). The control panel (7) is provided with a display screen.

5. A large diameter pipe pile bending test device according to claim 2, characterized in that: The centers of the arc-shaped grooves of the No. 1 test frame (2) and the No. 2 test frame (21) and the center of the arc-shaped groove of the test pressure plate (6) are arranged on the same axis.

6. A large diameter pipe pile bending test device according to claim 1, characterized in that: The connection mechanism comprises a connection plate (62), a fixing plate (63), bolts (64) and nuts (65); a connection plate (62) is provided on the top of the test pressure plate (6); a fixing plate (63) is provided on the bottom of the hydraulic rod (51); bolts (64) are provided at opposite ends of the fixing plate (63); connection holes corresponding to the bolts (64) are provided at opposite ends of the connection plate (62); the connection plate (62) is fixed to the fixing plate (63) by bolts (64) passing through the connection holes through nuts (65).

7. A large diameter pipe pile bending test device according to claim 6, characterized in that: The width of the fixing plate (63) is set smaller than the opening width of the arc-shaped groove structure at the top of the No. 1 test frame (2) and the No. 2 test frame (21).

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