A detection test tool for copper pipe

Abstract

The utility model discloses a detection test frock of copper pipe, including machine table and carrier plate, install linear module on machine table, linear module drive two carrier plates on it remove, the upside fixedly connected with vertical mounting plate of carrier plate, three radial linear guide rails b are fixedly installed to mounting plate in the inside along the circumference of round hole, the inside corresponding sliding connection of linear guide rail b has slider b, the back side fixedly connected with round bar of slider b, linear guide rail b, mounting plate all are equipped with radial long hole a, and round bar penetrates long hole a and with its sliding connection, the outside fixed mounting of mounting plate has with the concentric pipe shaft of round hole, and the rotation is connected with worm wheel on pipe shaft, and the lower portion installation of mounting plate has worm, and worm engages with worm wheel, and worm wheel is equipped with three oblique long holes b, and the end of round bar is inserted into long hole b and with its sliding connection. Three sliders b can centering move to the copper pipe of measuring copper pipe and tighten, and clamping is firm and stable, can prevent the emergence of separation in the process of tensile test.

Description

Technical Field

[0001] This utility model relates to the field of copper pipe testing technology, specifically to a testing fixture for copper pipes. Background Technology

[0002] The main purpose of the copper tube tensile test is to evaluate its mechanical properties, including tensile strength, yield strength, and elongation after fracture, to verify whether the material meets production standards and engineering design requirements. A search revealed Chinese utility model patent CN222470248U, which discloses a tensile device for copper tube processing. The device includes a moving frame, with fixed boxes slidably mounted on the left and right sides of the bottom inner wall of the sliding frame, and a fixed frame fixedly mounted on the top of the fixed boxes. Through a fixed assembly, a first motor is controlled to rotate a lead screw placed above a support plate. This rotation causes a sliding block to slide in a relative direction, which in turn causes a connecting block to slide, which in turn causes a clamping block to clamp and fix the copper tube. After the copper tube processing is completed, the connecting block releases the clamping block and controls an electric telescopic rod to move the support plate upwards, making it easier for workers to handle the copper tube. However, the above solution also has the following shortcomings: the clamping block 10 is used to clamp the copper tube radially from opposite sides. Since the copper tubes involved in the tensile test have different diameters, and the contact area between the clamping block 10 and the copper tube to be tested is small, if the clamping force is too large, the copper tube will be crushed. If the clamping force is too small, the clamping will not be secure and will detach during the tensile test. Utility Model Content

[0003] The purpose of this invention is to provide a testing fixture for copper tubes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for copper tubes, comprising a machine base and a carrier plate. A linear module is mounted on the machine base, driving two carrier plates to move. A vertical mounting plate is fixedly connected to the upper side of the carrier plate. A transversely penetrating circular hole is provided on the upper part of the mounting plate. Three radial linear guides b are fixedly mounted on the inner side of the mounting plate along the circumference of the circular hole. A slider b is slidably connected to the linear guides b. A round rod is fixedly connected to the back side of the slider b. Both the linear guides b and the mounting plate are provided with radial elongated holes a. The round rod passes through the elongated holes a and is slidably connected to them. A tube shaft concentric with the circular hole is fixedly mounted on the outer side of the mounting plate. A worm gear is rotatably connected to the tube shaft. A worm is mounted on the lower outer side of the mounting plate. The worm meshes with the worm gear. A handwheel is fixedly connected to the end of the worm. The worm gear is provided with three oblique elongated holes b. The end of the round rod is inserted into the elongated holes b and slidably connected to them.

[0005] Preferably, the linear module includes a linear guide rail a, a geared motor, and a lead screw. Two linear guide rails a are installed laterally and parallel to each other on the upper side of the machine base. Two sets of sliders a are slidably connected in the linear guide rails a. Two carrier plates are provided and fixedly installed corresponding to the sliders a. The lead screw is installed laterally in the middle of the upper side of the machine base through a bearing seat. The two ends of the lead screw are provided with two sections of threads with opposite helical directions. The bottom of the carrier plate is provided with a downwardly extending lug. The lead screw passes through the lug and is screwed to it. The output end of the geared motor is connected to the end of the lead screw.

[0006] Preferably, the inner end of the slider b is an arc surface and a rubber pad is pasted inside the arc surface.

[0007] Preferably, the width of the elongated hole b is equal to that of the elongated hole a, and the length of the elongated hole b is greater than the length of the elongated hole a.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the three sliders b of this utility model can move in a centered manner to tighten the copper tube under test, ensuring a firm and stable clamping and preventing detachment during the tensile test. Furthermore, the copper tube is subjected to uniform clamping force in three directions during clamping, which helps reduce the probability of it being crushed. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 for Figure 1 Schematic diagram of the local structure in direction A;

[0012] Figure 4 This is a schematic diagram of the installation structure of slider b.

[0013] In the diagram: 1. Machine base; 2. Linear guide rail a; 3. Gear motor; 4. Carrier plate; 5. Lead screw; 6. Mounting plate; 7. Linear guide rail b; 8. Slider b; 9. Tube shaft; 10. Worm gear; 11. Long hole b; 12. Round rod; 13. Worm; 14. Handwheel; 15. Round hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 1-4This utility model provides a technical solution: a testing fixture for copper tubes, including a machine base 1 and a carrier plate 4. A linear module is installed on the machine base 1, which drives two carrier plates 4 on it to move. A vertical mounting plate 6 is fixedly connected to the upper side of the carrier plate 4. The upper part of the mounting plate 6 has a horizontally penetrating circular hole 15. When used for testing, the copper tube passes through the circular hole 15 axially. Three radial linear guides b7 are fixedly installed on the inner side of the mounting plate 6 along the circumference of the circular hole 15. Slider b8 is slidably connected to the linear guides b7. The inner end of the slider b8 is an arc surface and a rubber pad is pasted inside the arc surface. When the three sliders b8 move synchronously towards the center, they can center and clamp the copper tube. A round rod 12 is fixedly connected to the back side of the slider b8. Both the linear guides b7 and the mounting plate 6 have radial elongated holes a. The round rod 12 passes through the elongated holes a and is slidably connected to them.

[0016] A tube shaft 9, concentric with the circular hole 15, is fixedly mounted on the outer side of the mounting plate 6. A worm gear 10 is rotatably connected to the tube shaft 9. A worm 13 is mounted on the lower outer side of the mounting plate 6 via a bearing seat. The worm 13 meshes with the worm gear 10. A handwheel 14 is fixedly connected to the end of the worm 13. The worm 13 drives the worm gear 10 to reduce speed and increase torque and can self-lock in reverse. The worm gear 10 has three oblique elongated holes b11 (the axis of the elongated holes b11 does not pass through the axis of the circular hole 15). The end of the circular rod 12 is inserted into the elongated holes b11 and slidably connected to them. When the worm gear 10 rotates, the elongated holes b11 can drive the circular rod 12 to move radially. The width of the elongated holes b11 is equal to that of the elongated holes a, and the length of the elongated holes b11 is greater than the length of the elongated holes a.

[0017] The linear module includes a linear guide rail a2, a geared motor 3, and a lead screw 5. Two linear guide rails a2 are installed horizontally and parallel to each other on the upper side of the machine base 1. Two sets of sliders a are slidably connected in the linear guide rails a2. Two carrier plates 4 are provided and fixedly installed corresponding to the sliders a. The lead screw 5 is installed horizontally in the middle of the upper side of the machine base 1 through a bearing seat. The two ends of the lead screw 5 are provided with two sections of threads with opposite helical directions (using trapezoidal threads). The bottom of the carrier plate 4 is provided with a downwardly extending lug. The lead screw 5 passes through the lug and is screwed to it. The output end of the geared motor 3 is connected to the end of the lead screw 5. The rotation of the lead screw 5 can drive the two carrier plates 4 to move synchronously towards or away from each other.

[0018] Working principle: When in use, the two ends of the copper tube to be tested are passed through the round holes 15 respectively. The worm 13 is rotated by the handwheel 14. The worm 13 drives the worm wheel 10 to rotate. The elongated hole b11 pushes the round rod 12 and the slider b8 to move radially. When the slider b8 moves to the center, it clamps the copper tube from three directions. The contact area is large and the clamping is firm. The reduction motor 3 drives the two carrier plates 4 to move in opposite directions, which can realize the stretching of the copper tube.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing fixture for copper tubes, comprising a machine base (1) and a carrier plate (4), characterized in that: A linear module is installed on the machine base (1), which drives two carrier plates (4) on it to move. A vertical mounting plate (6) is fixedly connected to the upper side of the carrier plate (4). The upper part of the mounting plate (6) is provided with a horizontal through-hole (15). Three radial linear guides b (7) are fixedly installed on the inner side of the mounting plate (6) along the circumference of the hole (15). A slider b (8) is slidably connected to the linear guides b (7). A round rod (12) is fixedly connected to the back side of the slider b (8). Both the linear guides b (7) and the mounting plate (6) are provided with radial... The long slot a, the round rod (12) passes through the long slot a and is slidably connected to it, the outer side of the mounting plate (6) is fixedly installed with a tube shaft (9) concentric with the round hole (15), the tube shaft (9) is rotatably connected to the worm wheel (10), the lower outer side of the mounting plate (6) is installed with a worm (13), the worm (13) meshes with the worm wheel (10), the end of the worm (13) is fixedly connected with a handwheel (14), the worm wheel (10) is provided with three oblique long slots b (11), the end of the round rod (12) is inserted into the long slots b (11) and is slidably connected to it.

2. The testing fixture for copper tubes according to claim 1, characterized in that: The linear module includes a linear guide rail a (2), a geared motor (3), and a lead screw (5). The linear guide rail a (2) has two sections installed horizontally and parallel to each other on the upper side of the machine base (1). Two sets of sliders a are slidably connected in the linear guide rail a (2). The carrier plate (4) has two sections and is fixedly installed corresponding to the sliders a. The lead screw (5) is installed horizontally in the middle of the upper side of the machine base (1) through a bearing seat. The two ends of the lead screw (5) have two sections of threads with opposite helical directions. The bottom of the carrier plate (4) has a downwardly extending lug. The lead screw (5) passes through the lug and is screwed to it. The output end of the geared motor (3) is connected to the end of the lead screw (5).

3. The testing fixture for copper tubes according to claim 1, characterized in that: The inner end of the slider b(8) is an arc surface and a rubber pad is pasted inside the arc surface.

4. The testing fixture for copper tubes according to claim 1, characterized in that: The width of the elongated hole b (11) is equal to that of the elongated hole a, and the length of the elongated hole b (11) is greater than that of the elongated hole a.

Images