Steel pipe plane bending performance testing machine

Abstract

The utility model discloses a steel pipe plane bending performance testing machine, and relates to the technical field of steel pipe plane bending performance testing machines. The device comprises a working table, wherein a buffering mechanism and a clamping mechanism are arranged on the working table; the bottom of the workbench is fixedly connected with a base, the top of the workbench is provided with a bending performance test module, the buffer mechanism comprises a buffer assembly and a buffer assembly II, and the buffer assembly comprises a [-shaped support frame fixedly connected to the top of the workbench; and trapezoidal sliding grooves are formed in the inner walls of the left side and the right side of the [-shaped supporting frame. By arranging the buffering mechanism, the problems that due to the fact that clamping force is too large, local stress of the steel pipe is too large, extra plastic deformation is generated on the clamped portion, evaluation on the overall bending performance of the steel pipe is disturbed, uneven clamping force distribution possibly causes an irregular deformation path in the bending process of the steel pipe, and the bending performance of the steel pipe is affected are solved. And the measured bending data are deviated.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe plane bending property testing machines, and particularly relates to a steel pipe plane bending property testing machine. Background Art

[0002] In the related art, a steel pipe bending testing machine with the publication number of CN219757959U is disclosed. During the process of bending a steel pipe, bearings roll relative to the workbench and support the turntable, thereby reducing the situation that the turntable deflects and forms an angle with the horizontal plane, that is, enabling the steel pipe to be tested to undergo bending deformation in a plane, and thus improving the accuracy of the bending testing machine when performing bending tests on steel pipes.

[0003] However, during the use of this device, due to excessive clamping force, the local stress on the steel pipe is too large, resulting in additional plastic deformation at the clamping position, thereby interfering with the evaluation of the overall bending performance of the steel pipe. Moreover, the uneven distribution of the clamping force may cause the steel pipe to have an irregular deformation path during the bending process, resulting in deviation of the measured bending data. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a steel pipe plane bending property testing machine. By setting a buffer mechanism, the problems that due to excessive clamping force, the local stress on the steel pipe is too large, resulting in additional plastic deformation at the clamping position, thereby interfering with the evaluation of the overall bending performance of the steel pipe, and the uneven distribution of the clamping force may cause the steel pipe to have an irregular deformation path during the bending process, resulting in deviation of the measured bending data are solved.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a steel pipe plane bending property testing machine, which includes a workbench, and a buffer mechanism and a clamping mechanism are arranged on the workbench;

[0007] The bottom of the workbench is fixedly connected with a base, a bending property test module is arranged on the top of the workbench, the buffer mechanism includes a buffer component and a second buffer component, the buffer component includes a C-shaped support frame fixedly connected to the top of the workbench, and trapezoidal chutes are opened on the inner walls of the left and right sides of the C-shaped support frame.

[0008] Furthermore, a lifting plate is slidably connected to the inner walls of the two trapezoidal chutes, and a clamping plate is arranged below the lifting plate.

[0009] Furthermore, a number of dampers are fixedly connected to the top of the clamping plate, the tops of the number of dampers are all fixedly connected to the lifting plate, a first spring is sleeved on the outer wall of each of the number of dampers, the tops of the number of first springs are all fixedly connected to the lifting plate, and the bottoms of the number of first springs are all fixedly connected to the clamping plate.

[0010] Furthermore, the second buffer assembly includes two rectangular blocks fixedly connected to the top of the clamping plate, and a sliding rod is fixedly connected between the two rectangular blocks.

[0011] Furthermore, two sliders are slidably connected to the outer wall of the sliding rod, a second spring is sleeved on the outer wall of the sliding rod, and the left side and the right side of the second spring are respectively fixedly connected to the two sliders.

[0012] Furthermore, two connecting blocks are fixedly connected to the bottom of the lifting plate, connecting rods are respectively hinged to the bottoms of the two connecting blocks, and the bottoms of the two connecting rods are respectively hinged to the two sliders.

[0013] Furthermore, the clamping mechanism includes adapter blocks respectively fixedly connected to the inner walls of the left side and the right side of the U-shaped support frame, a steel pipe is arranged on the tops of the two adapter blocks, and the steel pipe is in contact with the bottom of the clamping plate.

[0014] Furthermore, a threaded rod is rotatably connected to the top of the clamping plate, the top of the threaded rod rotatably penetrates through the outer wall of the U-shaped support frame and extends to the outside, and a handle is fixedly connected to the top extension of the threaded rod.

[0015] The utility model has the following beneficial effects:

[0016] 1. By arranging the buffer mechanism, when the clamping plate contacts the steel pipe, the clamping plate will not continue to move downward, and under the action of the threaded rod, the lifting plate will continue to apply a clamping force to the clamping plate. At this time, the clamping force will be buffered under the action of the damper and the first spring. Since the lifting plate continues to move downward, the two sliders will approach each other under the action of the connecting block and the connecting rod, and the second spring will be in a compressed state, so that it can be avoided that the steel pipe undergoes local deformation or damage due to excessive instantaneous clamping force. For thin-walled steel pipes, excessive direct clamping force may cause the pipe wall to dent or crack, and the buffering effect can effectively prevent this situation. At the same time, it can also reduce the impact on the clamping device itself and extend the service life of components such as the clamping plate and the lifting plate. Even if the steel pipe vibrates or displaces under the action of bending force during the test, this multiple buffering and stabilizing mechanism can ensure that the steel pipe is always firmly clamped;

[0017] 2. By setting up a clamping mechanism, when it is necessary to conduct an experiment on the bending performance of a steel pipe, the steel pipe can be placed on two matching blocks. Turn the handle, and the handle drives the threaded rod to rotate, causing the lifting plate to slide in the trapezoidal chute on the U-shaped support frame, so that the clamping plate clamps the steel pipe. This enables the clamping and fixing of the steel pipe only by turning the handle, with simple and direct operation, reducing complex operation steps and improving the efficiency of test preparation. The threaded rod drives the lifting plate and the clamping plate for clamping, which can provide uniform and stable clamping force to ensure that the steel pipe will not loosen or shift during the test.

[0018] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a schematic diagram of the front sectional structure of the present utility model;

[0022] Figure 3 is a schematic diagram of the partial sectional structure of the present utility model;

[0023] Figure 4 is of the present utility model Figure 3 is an enlarged schematic diagram of A in the present utility model;

[0024] Figure 5 is of the present utility model Figure 2 is an enlarged schematic diagram of B in the present utility model.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 1. Workbench; 101. Base; 102. Bending performance test module; 2. Buffer mechanism; 21. Buffer component; 211. U-shaped support frame; 212. Trapezoidal chute; 213. Lifting plate; 214. Clamping plate; 215. Damper; 216. Spring I; 22. Buffer component II; 221. Rectangular block; 222. Slide bar; 223. Slide block; 224. Spring II; 225. Connecting block; 226. Connecting rod; 3. Clamping mechanism; 301. Matching block; 302. Steel pipe; 303. Threaded rod; 304. Handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1-5As shown in the figure, the utility model relates to a steel pipe plane bending performance testing machine, which includes a workbench 1. A buffer mechanism 2 and a clamping mechanism 3 are arranged on the workbench 1. The bottom of the workbench 1 is fixedly connected with a base 101, and a bending performance test module 102 is arranged on the top of the workbench 1. The buffer mechanism 2 includes a buffer component 21 and a second buffer component 22. The buffer component 21 includes a U-shaped support frame 211 fixedly connected to the top of the workbench 1. Trapezoidal chutes 212 are opened on the inner walls of the left and right sides of the U-shaped support frame 211. A lifting plate 213 is slidably connected to the inner walls of the two trapezoidal chutes 212. A clamping plate 214 is arranged below the lifting plate 213. A plurality of dampers 215 are fixedly connected to the top of the clamping plate 214. The tops of the plurality of dampers 215 are all fixedly connected to the lifting plate 213. Springs 216 are sleeved on the outer walls of the plurality of dampers 215. The tops of the plurality of springs 216 are all fixedly connected to the lifting plate 213. The bottoms of the plurality of springs 216 are all fixedly connected to the clamping plate 214. The second buffer component 22 includes two rectangular blocks 221 fixedly connected to the top of the clamping plate 214. A sliding rod 222 is fixedly connected between the two rectangular blocks 221. Two sliders 223 are slidably connected to the outer wall of the sliding rod 222. A spring 224 is sleeved on the outer wall of the sliding rod 222. The left and right sides of the spring 224 are respectively fixedly connected to the two sliders 223. Two connecting blocks 225 are fixedly connected to the bottom of the lifting plate 213. Connecting rods 226 are respectively hinged to the bottoms of the two connecting blocks 225. The bottoms of the two connecting rods 226 are respectively hinged to the two sliders 223. By setting the buffer mechanism 2, under the action of the threaded rod 303, the lifting plate 213 will continue to apply a clamping force to the clamping plate 214. At this time, the clamping force will be buffered under the action of the damper 215 and the spring 216. Since the lifting plate 213 continues to move downward, the two sliders 223 will approach each other under the action of the connecting block 225 and the connecting rod 226, and the spring 224 will be in a compressed state, so that it can be avoided that the steel pipe is locally deformed or damaged due to excessive instantaneous clamping force. For thin-walled steel pipes, excessive direct clamping force may cause the pipe wall to dent or rupture, and the buffering effect can effectively prevent this situation. At the same time, it can also reduce the impact on the clamping device itself and extend the service life of components such as the clamping plate and the lifting plate. Even if the steel pipe 302 vibrates or displaces under the action of the bending force during the test, this multiple buffering and stabilizing mechanism can ensure that the steel pipe 302 is always firmly clamped. The clamping mechanism 3 includes adapter blocks 301 respectively fixedly connected to the inner walls of the left and right sides of the U-shaped support frame 211. A steel pipe 302 is arranged on the tops of the two adapter blocks 301. The steel pipe 302 is in contact with the bottom of the clamping plate 214. A threaded rod 303 is rotatably connected to the top of the clamping plate 214. The top of the threaded rod 303 rotatably penetrates through the outer wall of the U-shaped support frame 211 and extends to the outside. A handle 304 is fixedly connected to the top extension of the threaded rod 303. By setting the clamping mechanism 3, turning the handle 304,The handle 304 drives the threaded rod 303 to rotate, causing the lifting plate 213 to slide within the trapezoidal chute 212 on the C-shaped support frame 211, so that the clamping plate 214 clamps the steel pipe 302. This enables the clamping and fixing of the steel pipe 302 by simply turning the handle 304. The operation is simple and direct, reducing complex operation steps and improving the efficiency of test preparation. The threaded rod 303 drives the lifting plate 213 and the clamping plate 214 to clamp, providing a uniform and stable clamping force to ensure that the steel pipe 302 does not loosen or shift during the test.

[0029] A specific application of this embodiment is as follows: When in use, first place the device at the corresponding position through the base 101. When it is necessary to conduct an experiment on the bending performance of the steel pipe 302, the steel pipe 302 can be placed on the two adapter blocks 301. Turn the handle 304, and the handle 304 drives the threaded rod 303 to rotate, causing the lifting plate 213 to slide within the trapezoidal chute 212 on the C-shaped support frame 211, so that the clamping plate 214 clamps the steel pipe 302. This enables the clamping and fixing of the steel pipe 302 by simply turning the handle 304. The operation is simple and direct, reducing complex operation steps and improving the efficiency of test preparation. The threaded rod 303 drives the lifting plate 213 and the clamping plate 214 to clamp, providing a uniform and stable clamping force to ensure that the steel pipe 302 does not loosen or shift during the test. When the clamping plate 214 comes into contact with the steel pipe 302, the clamping plate 214 will not continue to move downward. Under the action of the threaded rod 303, the lifting plate 213 will continue to apply a clamping force to the clamping plate 214. At this time, the clamping force will be buffered under the action of the damper 215 and the first spring 216. Since the lifting plate 213 continues to move downward, the two sliders 223 will approach each other under the action of the connecting block 225 and the connecting rod 226, and the second spring 224 will be in a compressed state, so as to avoid local deformation or damage of the steel pipe due to excessive instantaneous clamping force. For thin-walled steel pipes, excessive direct clamping force may cause the pipe wall to dent or crack, and the buffering effect can effectively prevent this situation. At the same time, it can also reduce the impact on the clamping device itself and extend the service life of components such as the clamping plate and the lifting plate. Even if the steel pipe 302 vibrates or displaces under the action of bending force during the test, this multiple buffering and stabilizing mechanism can ensure that the steel pipe 302 is always firmly clamped.

[0030] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A steel pipe plane bending performance testing machine, comprising a workbench (1), characterized in that: A buffer mechanism (2) and a clamping mechanism (3) are arranged on the workbench (1). A base (101) is fixedly connected to the bottom of the workbench (1), a bending performance test module (102) is arranged on the top of the workbench (1), the buffer mechanism (2) includes a buffer component (21) and a second buffer component (22), the buffer component (21) includes a U-shaped support frame (211) fixedly connected to the top of the workbench (1), and trapezoidal chutes (212) are respectively arranged on the inner walls of the left side and the right side of the U-shaped support frame (211).

2. A steel pipe plane bending performance testing machine according to claim 1, characterized in that: A lifting plate (213) is slidably connected to the inner walls of the two trapezoidal chutes (212), and a clamping plate (214) is arranged below the lifting plate (213).

3. A steel pipe plane bending performance testing machine according to claim 2, characterized in that: A plurality of dampers (215) are fixedly connected to the top of the clamping plate (214), the tops of the plurality of dampers (215) are fixedly connected to the lifting plate (213), a first spring (216) is sleeved on the outer walls of the plurality of dampers (215), the tops of the plurality of first springs (216) are fixedly connected to the lifting plate (213), and the bottoms of the plurality of first springs (216) are fixedly connected to the clamping plate (214).

4. A steel pipe plane bending performance testing machine according to claim 3, characterized in that: The second buffer component (22) includes two rectangular blocks (221) fixedly connected to the top of the clamping plate (214), and a sliding rod (222) is fixedly connected between the two rectangular blocks (221).

5. A steel pipe plane bending performance testing machine according to claim 4, characterized in that: Two sliders (223) are slidably connected to the outer wall of the sliding rod (222), a second spring (224) is sleeved on the outer wall of the sliding rod (222), and the left side and the right side of the second spring (224) are respectively fixedly connected to the two sliders (223).

6. A steel pipe plane bending performance testing machine according to claim 5, characterized in that: Two connecting blocks (225) are fixedly connected to the bottom of the lifting plate (213), connecting rods (226) are respectively hinged to the bottoms of the two connecting blocks (225), and the bottoms of the two connecting rods (226) are respectively hinged to the two sliders (223).

7. A steel pipe plane bending performance testing machine according to claim 6, characterized in that: The clamping mechanism (3) includes adapter blocks (301) respectively fixedly connected to the inner walls of the left side and the right side of the U-shaped support frame (211), a steel pipe (302) is arranged on the tops of the two adapter blocks (301), and the steel pipe (302) is in contact with the bottom of the clamping plate (214).

8. A steel pipe plane bending performance testing machine according to claim 7, characterized in that: A threaded rod (303) is rotatably connected to the top of the clamping plate (214), the top of the threaded rod (303) rotatably penetrates through the outer wall of the U-shaped support frame (211) and extends to the outside, and a handle (304) is fixedly connected to the top extension of the threaded rod (303).

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