Corrugated pipe stretching test device

Abstract

The utility model belongs to the technical field of corrugated pipe tensile testing, and particularly relates to a corrugated pipe tensile testing device which comprises a support, a driving mechanism mounted on the support and a clamping mechanism mounted on the driving mechanism, and the clamping mechanism comprises a guide rail, an air cylinder, a screw, a nut, a first clamping part and a second clamping part. By arranging the clamping mechanism, the two ends of the corrugated pipe can be placed between the first clamping parts and the second clamping parts of the two sets of moving frames respectively, the inner ring positions of the second clamping parts are attached to the outer walls of the ends of the corrugated pipe, nuts on the screw rods are rotated, the nuts are attached to the outer ring walls of the second clamping parts, and therefore the corrugated pipe can be clamped. At the moment, the air cylinder can be driven to pull the first clamping part to approach the inner wall of the end part of the corrugated pipe, and pressure is applied until the end part of the corrugated pipe is completely clamped by the first clamping part and the second clamping part, so that the placement of the corrugated pipe is completed, a worker can conveniently clamp the end part of the corrugated pipe, and the corrugated pipe clamping device can adapt to corrugated pipes with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows tensile testing, in particular to a bellows tensile testing device. Background Art

[0002] The corrugated pipe is a new type of plastic pipe with a corrugated shape, which is made of high-density polyethylene and other additives. The plastic corrugated pipe has the characteristics of light weight, high pressure resistance, good toughness, fast construction, and long service life. It replaces concrete pipes and cast iron pipes in large quantities and is used as underground drainage and sewage in municipal engineering, residential areas, pre-buried pipelines on highways, farmland irrigation and water supply, drainage, chemical industry, and mining for fluid transportation, etc.

[0003] When performing a tensile test on a bellows, the bellows needs to be clamped. However, the clamps of commonly used tensile test devices can usually only clamp bellows of a single specification and model, with poor versatility. In addition, the clamping process is time-consuming, which affects the test efficiency. Utility Model Content

[0004] The utility model aims to provide a bellows tensile testing device to solve the defects of the prior art.

[0005] A bellows tensile testing device comprises a support, a driving mechanism mounted on the support and a clamping mechanism mounted on the driving mechanism, the clamping mechanism comprising a guide rail, a cylinder, a screw, a nut, a first clamping part and a second clamping part, the cylinder is in two groups opposed to each other and mounted on the guide rail through a fixing plate, the screw is mounted between the two groups of fixing plates, the first clamping part and the second clamping part are both in two groups and are slidably mounted on the guide rail and the screw in a relative arrangement, and the output end of the cylinder passes through the second clamping part and is fixedly connected to the first clamping part, the nut is rotatably mounted on the screw to limit the movement of the second clamping part in one direction.

[0006] By adopting the above technical solution, it is convenient to clamp corrugated pipes of different calibers to facilitate subsequent tensile testing.

[0007] The driving mechanism includes a motor, a first transmission wheel, a second transmission wheel, a synchronous belt, a bidirectional screw and a movable frame. The motor is installed on one side of the support. The first transmission wheel is fixedly installed at the output end of the motor. The second transmission wheel is arranged in two groups and is connected to the first transmission wheel through a synchronous belt. One end of the bidirectional screw is fixedly connected to the second transmission wheel. The movable frame is installed on the bidirectional screw for transmission at both ends.

[0008] By adopting the above technical solution, a tensile test is performed on the bellows.

[0009] The first clamping portion and the second clamping portion are both arranged in an arc-shaped structure, and the two groups of first clamping portions are arranged inside the two groups of second clamping portions.

[0010] By adopting the above technical solution, it is convenient to clamp the end of the corrugated pipe.

[0011] The clamping mechanism is installed at the middle position of the movable frame.

[0012] By adopting the above technical solution, the bellows is placed in the center, so that the tensile test of the bellows can be better performed.

[0013] The first clamping portion and the second clamping portion have the same width, and their edges are aligned vertically.

[0014] By adopting the above technical solution, it is convenient to clamp the end of the corrugated pipe.

[0015] The beneficial effects of the bellows tensile testing device of the utility model are:

[0016] By setting up a clamping mechanism, the two ends of the bellows can be placed between the first clamping part and the second clamping part of the two sets of movable frames respectively. After that, the second clamping part is made to fit the outer wall of the end of the bellows at the inner circle, and the nut on the screw is rotated to make the nut fit tightly against the outer circle wall of the second clamping part to restrict the second clamping part. At this time, the cylinder can be driven to pull the first clamping part close to the inner wall of the end of the bellows and apply pressure until the first clamping part and the second clamping part completely clamp the end of the bellows, that is, the placement of the bellows is completed, which is convenient for the staff to clamp the end of the bellows, and can adapt to bellows of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the bellows tensile test device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the clamping mechanism structure of the bellows tensile testing device proposed by the utility model.

[0019] In the figure: 1. support; 2. motor; 3. first transmission wheel; 4. second transmission wheel; 5. synchronous belt; 6. bidirectional screw; 7. movable frame; 8. clamping mechanism; 801. guide rail; 802. cylinder; 803. fixing plate; 804. screw; 805. nut; 806. first clamping part; 807. second clamping part. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] Reference Figure 1-2 A bellows tensile testing device comprises a support 1, a driving mechanism mounted on the support 1 and a clamping mechanism 8 mounted on the driving mechanism, the clamping mechanism 8 comprising a guide rail 801, a cylinder 802, a screw 804, a nut 805, a first clamping portion 806 and a second clamping portion 807, the cylinder 802 is divided into two groups and opposed to each other, and is mounted on the guide rail 801 through a fixing plate 803, the screw 804 is mounted between the two groups of fixing plates 803, the first clamping portion 806 and the second clamping portion 807 are both divided into two groups, and are slidably mounted on the guide rail 801 and the screw 804 in a relative arrangement, and the output end of the cylinder 802 passes through the second clamping portion 807 and is fixedly connected to the first clamping portion 806, the nut 805 is rotatably mounted on the screw 804, and is used to limit the movement of the second clamping portion 807 in one direction.

[0022] The clamping mechanism 8 is installed in the middle position of the movable frame 7. Two cylinders 802 are installed opposite to each other on one side surface of the movable frame 7. The fixing plate 803 is installed up and down at the end positions of the two guide rails 801 for installing the cylinder 802. The two groups of cylinders 802 are arranged opposite to each other up and down. When the cylinder 802 is driven, the first clamping part 806 can be driven to move in the direction of the second clamping part 807. The nut 805 can limit the second clamping part 807, and the end of the corrugated pipe can be clamped from the first clamping part 806 to cooperate with the second clamping part 807. The device is convenient for the staff to clamp the end of the corrugated pipe and can adapt to corrugated pipes of different sizes.

[0023] The first clamping part 806 and the second clamping part 807 are both arranged in an arc-shaped structure, and the two groups of first clamping parts 806 are arranged on the inner sides of the two groups of second clamping parts 807. The widths of the first clamping part 806 and the second clamping part 807 are equal, and their edges are aligned up and down. The two ends of the bellows can be placed between the first clamping part 806 and the second clamping part 807 of the two groups of moving frames 7 respectively. After that, the inner circle of the second clamping part 807 is made to fit the outer wall of the end of the bellows, and the nut 805 on the screw 804 is rotated so that the nut 805 is tightly attached to the outer wall of the second clamping part 807 to restrict the second clamping part 807. At this time, the cylinder 802 can be driven to pull the first clamping part 806 close to the inner wall of the end of the bellows and apply pressure until the first clamping part 806 and the second clamping part 807 completely clamp the end of the bellows, that is, the placement of the bellows is completed;

[0024] The driving mechanism includes a motor 2, a first transmission wheel 3, a second transmission wheel 4, a synchronous belt 5, a bidirectional lead screw 6 and a movable frame 7. The motor 2 is installed on one side of the support 1, the first transmission wheel 3 is fixedly installed at the output end of the motor 2, the second transmission wheel 4 is arranged in two groups, and is connected to the first transmission wheel 3 through a synchronous belt 5, one end of the bidirectional lead screw 6 is fixedly connected to the second transmission wheel 4, and the movable frame 7 is installed on the bidirectional lead screw 6 for transmission at both ends. At this time, the motor 2 can be driven to drive the synchronous belt 5 through the first transmission wheel 3, and the synchronous belt 5 synchronously drives the two groups of second transmission wheels 4, thereby transmitting the bidirectional lead screw 6 connected to the second transmission wheel 4, and the two groups of bidirectional lead screws 6 synchronously drive the two groups of movable frames 7 to move relative to each other. Based on the above operation, the tensile test of the corrugated pipe is completed.

[0025] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A bellows tensile testing device, comprising a support (1), a driving mechanism mounted on the support (1), and a clamping mechanism (8) mounted on the driving mechanism, characterized in that: The clamping mechanism (8) comprises a guide rail (801), a cylinder (802), a screw (804), a nut (805), a first clamping part (806) and a second clamping part (807); the cylinder (802) is in two groups facing each other and is mounted on the guide rail (801) via a fixing plate (803); the screw (804) is mounted between the two groups of fixing plates (803); the first clamping part (806) and the second clamping part (807) are both in two groups and are slidably mounted on the guide rail (801) and the screw (804) in a relative arrangement; the output end of the cylinder (802) passes through the second clamping part (807) and is fixedly connected to the first clamping part (806); the nut (805) is rotatably mounted on the screw (804) and is used to limit the movement of the second clamping part (807) in one direction.

2. The bellows tensile testing device according to claim 1, characterized in that: The driving mechanism comprises a motor (2), a first transmission wheel (3), a second transmission wheel (4), a synchronous belt (5), a bidirectional lead screw (6) and a moving frame (7); the motor (2) is mounted on one side of a support (1); the first transmission wheel (3) is fixedly mounted at the output end of the motor (2); the second transmission wheel (4) is arranged in two groups and is connected to the first transmission wheel (3) through a synchronous belt (5); one end of the bidirectional lead screw (6) is fixedly connected to the second transmission wheel (4); and the moving frame (7) is installed on the bidirectional lead screw (6) for transmission at both ends.

3. The bellows tensile testing device according to claim 2, characterized in that: The first clamping portion (806) and the second clamping portion (807) are both arranged in an arc-shaped structure, and the two groups of first clamping portions (806) are arranged inside the two groups of second clamping portions (807).

4. The bellows tensile testing device according to claim 3, characterized in that: The clamping mechanism (8) is installed at the middle position of the movable frame (7).

5. The bellows tensile testing device according to claim 4, characterized in that: The first clamping portion (806) and the second clamping portion (807) have the same width, and their edges are aligned vertically.

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