Copper pipe friction testing device

Abstract

The utility model discloses a copper pipe friction testing device, and relates to the technical field of copper pipe processing. The device comprises a bottom plate, electric push rods, a clamping seat and a side plate, the electric push rods are symmetrically fixed to the top of the bottom plate along the transverse center line, pressure sensors are fixed to the telescopic ends of the two electric push rods, the clamping seat is fixed to the top ends of the two pressure sensors, and a movable groove is formed in the middle of one side of the clamping seat; a matched pressing plate is movably connected into the movable groove, a side plate is fixed to the side, close to the movable groove, of the clamping base, and a pushing plate is movably connected into the movable groove between the side plate and the matched pressing plate. According to the copper pipe friction testing device, the bottom plate, the electric push rod, the clamping seat and the side plate are arranged, so that the problems that when the copper pipe friction testing device works, the copper pipe easily rotates in the radial direction to influence the testing accuracy, and the friction force of the copper pipe is inconvenient to test under different pressures are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper tube processing, in particular to a copper tube friction testing device. Background Art

[0002] Copper pipe, also known as red copper pipe, is a type of nonferrous metal pipe that is pressed and drawn seamless. Copper pipe is strong and corrosion-resistant, making it the preferred material for modern contractors to install in all residential water, heating, and cooling pipes. Its pressure resistance is several times, or even dozens of times, higher than that of plastic and aluminum-plastic pipes. It can withstand the water pressure in today's buildings, making it a popular choice for water supply pipes. After copper pipe processing is complete, friction testing equipment is used to determine the friction on its surface. However, this method still has the following drawbacks in actual use:

[0003] When the copper tube friction test device is working, the copper tube is placed directly into the groove to allow it to slide freely. During the sliding process of the copper tube, radial rotation is likely to occur, affecting the accuracy of the test;

[0004] When the copper tube friction test device is working, the copper tube is clamped by setting it. During the clamping process, the copper tube is directly clamped and rubbed. During the friction process of the copper tube, there is no appropriate clamping force, which makes it inconvenient to test the friction force of the copper tube under different pressures. Utility Model Content

[0005] The purpose of the utility model is to provide a copper tube friction testing device. By arranging a bottom plate, an electric push rod, a clamping seat and a side plate, the utility model solves the problem that the copper tube is prone to radial rotation when the copper tube friction testing device is working, which affects the accuracy of the test, and the problem that it is inconvenient to test the friction force of the copper tube under different pressures.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a copper tube friction testing device, comprising a base plate, an electric push rod, a clamping seat and a side plate, wherein the top of the base plate is symmetrically fixed with an electric push rod along a transverse center line, the telescopic ends of the two electric push rods are fixed with pressure sensors, the tops of the two pressure sensors are commonly fixed with a clamping seat, a movable groove is provided in the middle of one side of the clamping seat, a matching pressure plate is movably connected in the movable groove, a side plate is fixed on the side of the clamping seat close to the movable groove, a push plate is movably connected in the movable groove between the side plate and the matching pressure plate, when working, the electric push rod is supported on it by the base plate, the clamping seat is driven to rise and fall by the electric push rod, and the copper tube is clamped therein by the clamping seat and the side plate, at this time, when the electric push rod drives the clamping seat to rise, the pressure difference measured by the pressure sensor is used to determine the friction force on the surface of the copper tube.

[0008] Furthermore, a fixing plate is symmetrically fixed to the top of the base plate along the longitudinal center line, and each fixing plate is threadedly connected with a rotating bolt. The base plate drives the clamping plate to move through the rotating bolts threadedly connected to the fixing plate.

[0009] Furthermore, the ends of the two rotating bolts close to each other are both rotatably connected to the clamping plates, and the two clamping plates are both supported on the top of the base plate. When the rotating bolts are pushed by the rotating bolts, the clamping plates are driven to move.

[0010] Furthermore, a push rod is symmetrically fixed on the side of the mating pressure plate away from the push plate, and the two push rods are both movably connected in the clamping seat, and the push rods extend out of the clamping seat, and the ends of the two push rods extending out of the clamping seat are fixed with connecting plates, and a compression spring is fixed on the outside of the push rod on the side of the connecting plate close to the clamping seat, and each of the compression springs is fixed on the outside of the clamping seat. When the compression spring on the connecting plate connected to the mating pressure plate through the push rod works, the compression spring rebounds to clamp the copper tube with corresponding pressure.

[0011] Furthermore, a display board is fixed between the two connecting plates, a display ruler is fixed on the clamping seat on one side of the display board, and the connecting plate cooperates with the display board through the display board to determine the deformation degree of the compression spring.

[0012] Furthermore, a pushing bolt is threadedly connected transversely in the side plate, and the pushing bolt is rotatably connected to the pushing plate. When the side plate is rotated by the pushing bolt, the pushing plate is pushed to move.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the copper tube is prone to radial rotation and affects the accuracy of the test when the copper tube friction test device is working by arranging a base plate, an electric push rod and a clamping seat. When the electric push rod is started, the electric push rod drives the pressure sensor to rise and fall, and drives the clamping seat to rise and fall. When the electric push rod drives the clamping seat to rise and fall, the pressure sensor transmits the pressure generated between the clamping seat and the telescopic end of the electric push rod. After subtracting the gravity of the clamping seat and the side plate from the read pressure indication, the pulling force of the copper tube during sliding friction is determined, so that the copper tube can be well restricted when the tube friction test device is working, and radial rotation is not easy to occur, and the test performance is better.

[0015] The utility model solves the problem of inconvenience in testing the friction force of the copper tube under different pressures when the copper tube friction testing device is working by arranging a clamping seat and a side plate. The copper tube is placed in the movable groove, and its bottom end is supported on the bottom plate. Then the pushing bolt on the side plate is rotated, and the pushing plate is pushed by the pushing bolt to move the pressing plate to press the copper tube to move to the matching pressure plate. After the matching pressure plate is pressed, the pushing plate is continuously rotated to press the matching pressure plate, so that the matching pressure plate pushes the pushing rod, the connecting plate and the compression spring to be restricted until the display plate moves to the appropriate position on the display scale, so that the pushing rod presses the copper tube with corresponding pressure. Then the clamping seat can be driven by the electric push rod, so that the friction force of the copper tube under different pressures can be conveniently tested when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereoscopic diagram of the assembly structure of a copper tube friction testing device;

[0017] Figure 2 It is a three-dimensional diagram of the base plate structure;

[0018] Figure 3 This is a three-dimensional diagram of the electric push rod structure;

[0019] Figure 4 It is a three-dimensional diagram of the clamping seat structure;

[0020] Figure 5 This is a three-dimensional diagram of the side panel structure.

[0021] Reference numerals:

[0022] 1. Base plate; 101. Fixed plate; 102. Rotating bolt; 103. Clamping plate; 2. Electric push rod; 201. Pressure sensor; 3. Clamping seat; 301. Movable slot; 302. Matching pressure plate; 303. Push rod; 304. Connecting plate; 305. Compression spring; 306. Display panel; 307. Display scale; 4. Side panel; 401. Push plate; 402. Push bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment 1

[0024] See also Figure 1-5 The utility model is a copper tube friction testing device, comprising a base plate 1, an electric push rod 2, a clamping seat 3 and a side plate 4. The electric push rod 2 is symmetrically fixed to the top of the base plate 1 along the horizontal center line. The base plate 1 drives the clamping seat 3 to rise and fall through the electric push rod 2. The telescopic ends of the two electric push rods 2 are both fixed with pressure sensors 201. The pressure sensors 201 are driven to rise and fall by the electric push rod 2, which drives the clamping seat 3 to rise and fall. When the electric push rod 2 drives the clamping seat 3 to rise and fall, the pressure sensor 201 transmits the pressure generated between the clamping seat 3 and the telescopic end of the electric push rod 2. The tops of the two pressure sensors 201 A clamping seat 3 is fixed together, and a movable groove 301 is opened in the middle of one side of the clamping seat 3. A matching pressure plate 302 is movably connected in the movable groove 301. The clamping seat 3 is movably connected to the matching pressure plate 302 through the movable groove 301. Through the cooperation of the matching pressure plate 302, the surface of the copper tube is subjected to different frictions. A side plate 4 is fixed on the side of the clamping seat 3 close to the movable groove 301. A push plate 401 is movably connected in the movable groove 301 between the side plate 4 and the matching pressure plate 302. The side plate 4 movably connects the push plate 401 to it, and pushes it to the matching pressure plate 302 through the push plate 401 to clamp the copper tube.

[0025] Specifically, a fixing plate 101 is symmetrically fixed along the longitudinal center line on the top of the base plate 1. A rotating bolt 102 is threaded through each fixing plate 101. The base plate 1 is threadedly connected to the rotating bolt 102 through the fixing plate 101, and when the rotating bolt 102 rotates, the clamping plate 103 is pushed to move.

[0026] Furthermore, the ends of the two rotating bolts 102 that are close to each other are both rotatably connected to the clamping plates 103, and the two clamping plates 103 are both supported on the top of the base plate 1. The rotating bolts 102 push the clamping plates 103 to move, and during the movement of the clamping plates 103, the bottom end of the copper tube is restricted on the base plate 1.

[0027] The operating process of this embodiment is as follows: when working, the upper part of the copper tube is restricted on the clamping seat 3, and then the two rotating bolts 102 are rotated. When the rotating bolts 102 are rotated, the clamping plate 103 is driven to move to contact the bottom end of the copper tube, and then the rotating bolts 102 are rotated again. The rotating bolts 102 push the two clamping plates 103 to clamp the bottom end of the copper tube. After the bottom end of the copper tube is clamped, the electric push rod 2 is started, and the electric push rod 2 drives the pressure sensor 201 to rise and fall, driving the clamping seat 3 to rise and fall. When the electric push rod 2 drives the clamping seat 3 to rise and fall, the pressure sensor 201 transmits the pressure generated between the clamping seat 3 and the telescopic end of the electric push rod 2. After subtracting the gravity of the clamping seat 3 and the side plate 4 from the read pressure indication, the pulling force of the copper tube during sliding friction is determined. Specific embodiment 2

[0028] See also Figure 1 、 4 5. On the basis of the specific embodiment 1, a push rod 303 is symmetrically fixed on the side of the matching pressure plate 302 away from the pushing plate 401. The two push rods 303 are both movably connected in the clamping seat 3, and the push rods 303 extend out of the clamping seat 3. The ends of the two push rods 303 extending out of the clamping seat 3 are fixed with a connecting plate 304. A compression spring 305 is fixed on the outside of the push rod 303 on the side of the connecting plate 304 close to the clamping seat 3. Each compression spring 305 is fixed on the outside of the clamping seat 3. When the matching pressure plate 302 is pushed by the pushing plate 401, the copper tube is pushed onto the matching pressure plate 302, and then the matching pressure plate 302 is pressed, so that the matching pressure plate 302 pushes the push rod 303, the connecting plate 304 and the compression spring 305 are restricted, so that the push rod 303 presses the copper tube with corresponding pressure.

[0029] Specifically, a display board 306 is fixed between the two connecting plates 304, and a display scale 307 is fixed on the clamping seat 3 on one side of the display board 306. When the display board 306 is pushed by the connecting plate 304, the display board 306 moves to different positions on the display scale 307, and then the display scale 307 displays the different pressures applied to the copper tube (the calculation method is pressure = twice the elastic coefficient of the compression spring 305 * the length of the change in the front and rear position of the display board 306 on the display scale 307).

[0030] Furthermore, a push bolt 402 is threadedly connected transversely in the side plate 4 , and the push bolt 402 is rotatably connected to the push plate 401 . When the side plate 4 is rotated by the push bolt 402 , the side plate 4 is pushed to move, pressing the copper tube onto the mating pressure plate 302 .

[0031] The operation process of this embodiment is as follows: when working, first put the copper tube into the movable groove 301, and support its bottom end on the bottom plate 1, then rotate the pushing bolt 402 on the side plate 4, and push the pushing plate 401 to move the copper tube to the matching pressure plate 302 through the pushing bolt 402, and then press the matching pressure plate 302 after it is pressed, and continue to rotate the pushing plate 401 to press the matching pressure plate 302, so that the matching pressure plate 302 pushes the pushing rod 303, the connecting plate 304 and the compression spring 305 to be restricted, until the display panel 306 moves to the appropriate position on the display scale 307, so that the pushing rod 303 presses the copper tube with the corresponding pressure, and then the clamping seat 3 can be driven to move by the electric push rod 2.

[0032] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A copper tube friction testing device, comprising a base plate (1), an electric push rod (2), a clamping seat (3) and a side plate (4), characterized in that: An electric push rod (2) is symmetrically fixed to the top of the base plate (1) along the transverse center line, and a pressure sensor (201) is fixed to the telescopic end of each of the two electric push rods (2). A clamping seat (3) is fixed to the top of the two pressure sensors (201). A movable groove (301) is provided in the middle of one side of the clamping seat (3), and a matching pressure plate (302) is movably connected in the movable groove (301). A side plate (4) is fixed to the side of the clamping seat (3) close to the movable groove (301), and a push plate (401) is movably connected in the movable groove (301) between the side plate (4) and the matching pressure plate (302).

2. A copper tube friction testing device according to claim 1, characterized in that: A fixing plate (101) is symmetrically fixed to the top of the bottom plate (1) along the longitudinal center line, and a rotating bolt (102) is threadedly connected through each fixing plate (101).

3. A copper tube friction testing device according to claim 2, characterized in that: The ends of the two rotating bolts (102) that are close to each other are both rotatably connected to a clamping plate (103), and the two clamping plates (103) are both supported on the top of the bottom plate (1).

4. The copper tube friction testing device according to claim 1, characterized in that: A push rod (303) is symmetrically fixed to one side of the mating pressure plate (302) away from the push plate (401), and both push rods (303) are movably connected in the clamping seat (3), and the push rods (303) extend out of the clamping seat (3). The ends of the two push rods (303) extending out of the clamping seat (3) are fixed with a connecting plate (304), and a compression spring (305) is fixed to the outside of the push rod (303) on the side of the connecting plate (304) close to the clamping seat (3), and each compression spring (305) is fixed to the outside of the clamping seat (3).

5. The copper tube friction testing device according to claim 4, characterized in that: A display panel (306) is fixed between the two connecting plates (304), and a display ruler (307) is fixed on the clamping seat (3) on one side of the display panel (306).

6. The copper tube friction testing device according to claim 1, characterized in that: A pushing bolt (402) is threadedly connected transversely inside the side plate (4), and the pushing bolt (402) is rotatably connected to the pushing plate (401).

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