High-density polyethylene (HDPE) silicon core pipe performance detection equipment

Abstract

The invention relates to the technical field of silicon core pipe performance detection, in particular to HDPE silicon core pipe performance detection equipment which comprises a mounting bottom plate, vertical plates are fixed to the top of the mounting bottom plate in a bilateral symmetry mode, and horizontal sliding rails are mounted on the top of the mounting bottom plate and located on the right sides of the vertical plates in a front-back symmetry mode. The opposite sides of the two vertical plates are each provided with a clamping unit for clamping a silicon core pipe, the mounting bottom plate and the vertical plate on the right side are jointly provided with a pressing detection unit, and the two horizontal sliding rails are jointly connected with a friction detection unit through electric sliding blocks. The pressure resistance of the silicon core pipe can be detected through the pressure dynamic detection unit, and the dynamic and static friction coefficients of the silicon core pipe can be detected through the friction detection unit, so that three-sample data of the silicon core pipe can be rapidly and synchronously detected, the cost of various detection equipment is reduced, the detection efficiency can be improved, and the detection cost is reduced. And three detection steps are combined into one detection step.

Description

Technical Field

[0001] The invention relates to the technical field of silicon core pipe performance detection, in particular to a HDPE silicon core pipe performance detection device. Background Art

[0002] HDPE silicone core tube (hereinafter referred to as silicone core tube), full name high-density polyethylene silicone core tube, is a new type of communication pipe with high-density polyethylene as the base material and a layer of silicone material coated on the inner wall. It has the advantages of light weight, high strength, corrosion resistance, and long service life, and is widely used in the laying and protection of communication cables. In order to ensure the use effect of the silicone core tube, it is necessary to conduct a number of tests on the produced silicone core tube. Among them, the friction performance test of the silicone core tube is not only a key link in product quality control, but also an important measure to ensure the quality and efficiency of communication network construction. Through friction performance testing, it can be ensured that the performance of the silicone core tube in actual application meets expectations, providing reliable guarantee for the construction and operation of communication infrastructure.

[0003] The actual test of the friction performance of the silicon core tube is divided into two parts. One part is the static friction test. This test method uses a special friction testing machine to apply a gradually increasing external force until the sample begins to slide, and then calculates the static friction coefficient of the silicon core tube based on the external force, and compares it with the static friction coefficient of the standard sample; the other part is the dynamic friction test. This test method usually uses a friction testing machine to drive the sample to do uniform linear motion, and records the magnitude of the friction force during the movement of the sample, so as to calculate the dynamic friction coefficient of the silicon core tube and compare it with the dynamic friction coefficient of the standard sample.

[0004] The friction performance of the silicon core tube can be comprehensively evaluated through the above two detection methods. However, since the cables need to be installed and pulled out during the maintenance of the silicon core tube and the cable, the silicon core tube is subjected to the pressure of the soil, resulting in large dynamic and static friction during the installation and removal of the cable. The above detection method cannot detect the friction of the cable against the inner wall of the silicon core tube when the silicon core tube is under pressure, resulting in the lack of universality in the detection of the silicon core tube. In addition, when the above equipment detects the friction performance of the silicon core tube, the friction performance is tested by rubbing the sample against the inner wall of the silicon core tube, which is unable to closely match the friction between the rubber sleeve on the outside of the cable and the silicon core tube in the actual use scenario of the silicon core tube. In addition, during the installation of the cable, the rubber sleeve may be raised in some places, which seriously affects the friction resistance factor encountered during the installation of the cable. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a HDPE silicon core pipe performance detection device, including a mounting base plate, a vertical plate is symmetrically fixed on the top of the mounting base plate, a horizontal slide rail is symmetrically installed on the top of the mounting base plate and on the right side of the vertical plate, and clamping units for clamping the silicon core pipe are arranged on the opposite sides of the two vertical plates, a pressure detection unit is commonly arranged on the mounting base plate and the vertical plate on the right, and a friction detection unit is commonly connected to the two horizontal slide rails through an electric slider; the pressure detection unit includes an adjustment structure vertically arranged on the top of the mounting base plate, a positioning structure is arranged on the vertical plate on the right, the positioning structure is in an inclined state, and the adjustment structure and the positioning structure are both controlled by a cylinder It is connected with a pressing element, and the two pressing elements are symmetrically distributed in the center; the clamping unit includes a square column fixed on the rear side of the vertical plate, and a push sleeve is slidably connected to the square column, and a connecting plate is fixed to the side of the push sleeve close to the pressing element, and the side of the vertical plate close to the pressing element is symmetrically arranged with clamping elements driven synchronously by the connecting plate, and an extension plate is fixed to the side of the vertical plate away from the pressing element, and an electric push rod is fixed to the rear side of the extension plate, and the pushing end of the electric push rod is connected to the push sleeve through the push plate; the friction detection unit includes a mounting plate fixed on the two electric sliders, and a threaded column is threadedly connected to the mounting plate, and the left end of the threaded column is connected to the friction element through a connecting element; an avoidance port is arranged on the vertical plate on the right.

[0006] Furthermore, the adjustment structure includes a fixed plate fixed on the top of the mounting base plate, a limiting slide rail is arranged on the top of the fixed plate, a connecting block is connected to the limiting slide rail through a horizontal slider, the cylinder is installed on the connecting block, a plurality of positioning seats are fixed horizontally and linearly on the top of the fixed plate, a matching plate is fixed on the side of the corresponding positioning seat of the connecting block, and positioning pins are commonly connected to the matching plate and the positioning seat at the corresponding position.

[0007] Furthermore, the pressing element includes a U-shaped plate fixed to the pushing end of the cylinder, the U-shaped plate is in an inclined state, and two vertical sections of the U-shaped plate are commonly connected to an arc-shaped collecting plate, and a plurality of radial downward pressure structures are evenly arranged circumferentially on the arc-shaped collecting plate.

[0008] Furthermore, the radial downward pressure structure includes radial columns that slide through the arc-shaped collecting plate, a square plate is fixed to the end of each radial column close to the U-shaped plate, a compression spring is connected between the square plate and the arc-shaped collecting plate, and a pressure dividing plate is symmetrically hinged to the end of each radial column away from the U-shaped plate, and a reset torsion spring is provided at the hinge position of each pressure dividing plate and the radial column.

[0009] Furthermore, the clamping element includes a limiting plate fixed on the side of the vertical plate, a vertical sliding rod vertically sliding through the limiting plate, an arc-shaped clamping plate is fixed on the end of the vertical sliding rod close to the avoidance opening, an arc-shaped friction plate is provided on the inner arc surface of the arc-shaped clamping plate, and a transmission rod is connected between the end of the vertical sliding rod away from the avoidance opening and the connecting plate.

[0010] Furthermore, the connecting element includes a circular plate rotatably connected to the threaded column, a left extension column is fixed on the left side of the circular plate, a left through groove is provided in the middle of the left extension column, an embedded column is slidably connected in the left through groove, a positioning block is fixed to the left end of the embedded column, the left end of the positioning block is connected to the friction element through a ball hinge, a rotating sleeve is threadedly connected to the positioning block, a plurality of compressed round rods connected by connecting springs are evenly arranged in the circumference of the rotating sleeve, and a horizontal spring is connected between the positioning block and the left extension column.

[0011] Furthermore, a stabilizing column is fixed at the bottom of the left extension column; a stabilizing slide rail is arranged on the top of the mounting base plate and below the left extension column, the stabilizing slide rail is connected to the stabilizing column through a connecting slider, a vertical groove is opened on the left extension column, an upper extension rod is fixed to the top of the right end of the embedded column, a No. 1 scale is fixed on the side of the left extension column and corresponding to the position of the vertical groove, and a No. 2 scale is connected to the front side of the mounting plate.

[0012] Furthermore, the friction element includes a mounting block arranged at the left end of the connecting element, a threaded section is arranged at the left end of the side surface of the mounting block, a mounting sleeve is threadedly connected to the threaded section on the side surface of the mounting block, the mounting sleeve is used to install the rubber sleeve for packaging the cable, and an outward pushing structure for pushing the rubber sleeve outward is arranged in the mounting block.

[0013] Furthermore, the push-out structure includes an inner groove opened in the mounting block, a pushing block is slidably connected in the inner groove, an adjusting stud is rotatably installed on the left end of the pushing block, the adjusting stud is threadedly connected to the mounting block, the mounting block is symmetrically provided with outer through grooves located at the upper and lower positions of the inner groove, an outer push rod is slidably connected in the outer through groove, a matching inclined surface is arranged between the outer push rod and the pushing block, and a reset structure is symmetrically arranged on the left and right sides of the outer push rod.

[0014] Furthermore, the reset structure includes a horizontal plate fixed to the side of the outer push rod, an avoidance groove is opened in the mounting block and corresponds to the position of the horizontal plate, and an inner spring is connected between the horizontal plate and the side wall of the avoidance groove.

[0015] The beneficial effects of the present invention are: 1. The present invention can not only detect the compressive resistance of the silicon core tube through the pressure detection unit, but also detect the dynamic and static friction coefficients of the silicon core tube under pressure through the pressure detection unit in cooperation with the friction detection unit, so as to quickly perform synchronous detection of three types of data of the silicon core tube, thereby reducing the cost of various detection equipment, and at the same time improving the detection efficiency, so that the three detection steps are combined into one detection.

[0016] 2. The present invention uses friction elements to install the rubber sleeve for packaging cables, so that the dynamic and static friction detection process can simulate the actual application scenarios in which the cable is pushed through the inside of the silicon core tube and installed during the use and installation of the silicon core tube. At the same time, the rubber sleeve is pushed outward by the outward push structure, which is closer to the situation in which the rubber sleeve has bulges in some positions during actual use, affecting the friction between the rubber sleeve and the inner wall of the silicon core tube.

[0017] 3. The present invention uses a cylinder to push the arc-shaped collecting plate and cooperates with each radial downward pressure structure to perform radial pressure testing on the silicon-core tube, and the pressure dividing plate can simulate the situation where the silicon-core tube is subjected to all-directional pressure from the soil after installation, thereby making the test result more universal, and can also make the test result of the subsequent dynamic friction coefficient test closer to the actual situation where the silicon-core tube is buried underground and subjected to all-directional pressure during cable maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a first-view structural diagram of the vertical plate, the clamping unit and the pressure detection unit in the present invention.

[0021] Figure 3 It is a second perspective structural schematic diagram of the vertical plate, the clamping unit and the pressure detection unit in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the piezoelectric element in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the horizontal slide rail and the friction detection unit in the present invention.

[0024] Figure 6 It is a partial structural schematic diagram of the friction detection unit in the present invention.

[0025] Figure 7 It is a partial cross-sectional view of the friction detection unit in the present invention.

[0026] Figure 8 yes Figure 7 Enlarged view of point A in the middle.

[0027] In the figure: 1. Mounting base plate; 11. Vertical plate; 12. Horizontal slide rail; 2. Clamping unit; 21. Square column; 211. Push sleeve; 212. Connecting plate; 213. Extension plate; 214. Electric push rod; 215. Push plate; 22. Clamping element; 221. Limiting plate; 222. Vertical slide rod; 223. Arc clamp; 224. Arc friction plate; 225. Transmission rod; 3. Pressing detection unit; 31. Cylinder; 311. Fixed plate; 312. Limiting slide rail; 313. Connecting block; 314. Positioning seat; 315. Coordination plate; 316. Oblique extension plate; 317. Outer frame; 318. Inner plate; 319. Positioning hole; 32. Pressing element; 321. U-shaped Plate; 322, arc-shaped collecting plate; 323, radial column; 324, square plate; 325, compression spring; 326, pressure dividing plate; 4, friction detection unit; 41, mounting plate; 411, threaded column; 42, connecting element; 421, round plate; 422, left extension column; 423, embedded column; 424, positioning block; 425, compression round rod; 426, stabilizing slide rail; 427, upper extension rod; 428, No. 1 scale; 429, No. 2 scale; 43, friction element; 431, mounting block; 432, mounting sleeve; 433, inner groove; 434, pushing block; 435, adjusting stud; 436, outer through groove; 437, outer push rod; 438, horizontal plate; 439, avoidance groove. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0029] See also Figure 1-Figure 2 A HDPE silicon core pipe performance testing device includes a mounting base plate 1, a vertical plate 11 is symmetrically fixed on the top of the mounting base plate 1, a horizontal slide rail 12 is symmetrically installed on the top of the mounting base plate 1 and on the right side of the vertical plate 11, a clamping unit 2 for clamping the silicon core pipe is arranged on the opposite sides of the two vertical plates 11, a pressing detection unit 3 is commonly arranged on the mounting base plate 1 and the vertical plate 11 on the right, and a friction detection unit 4 is commonly connected to the two horizontal slide rails 12 through an electric slider.

[0030] The present invention detects the pressure resistance and the dynamic and static friction coefficients of the inner wall of the silicon core tube respectively through the pressure detection unit 3 and the friction detection unit 4. In the process of realizing the pressure resistance detection by the pressure detection unit 3, the friction detection unit 4 simultaneously detects the dynamic and static friction coefficients of the inner wall, which can also simulate the situation of the actual silicon core tube being subjected to soil pressure during use, thereby making the experimental data of the dynamic and static friction coefficients more practical and more in line with reality.

[0031] Specifically, the operator first takes a standard silicon core tube sample of a fixed length and places it on two clamping units 2, and then clamps the silicon core tube through the clamping unit 2, and then controls the pressure detection unit 3 to radially press the silicon core tube to be tested, and detects the pressure resistance of the silicon core tube. After the pressure detection unit 3 completes the pressing of the silicon core tube to be tested, the friction detection unit 4 is controlled to detect the static friction coefficient of the standard silicon core tube sample in turn, and then the electric slider is controlled to drive the friction detection unit 4 to detect the dynamic friction coefficient of the standard silicon core tube sample. After the inspection of the standard silicon core tube sample is completed, the operator takes a silicon core tube sample to be tested that is the same length as the above-mentioned standard silicon core tube sample and performs the above-mentioned inspection again. After the inspection is completed, the inspection results of the silicon core tube sample to be tested and the standard silicon core tube sample are compared, so as to evaluate whether the pressure resistance of the silicon core tube sample to be tested and the dynamic and static friction coefficients of the inner wall meet the requirements.

[0032] See also Figure 2-Figure 3 The clamping unit 2 includes a square column 21 fixed on the rear side of the vertical plate 11, and a push sleeve 211 is slidably connected to the square column 21. A connecting plate 212 is fixed to the side of the push sleeve 211 close to the pressing element 32. The side of the vertical plate 11 close to the pressing element 32 is symmetrically provided with clamping elements 22 synchronously driven by the connecting plate 212. An extension plate 213 is fixed to the side of the vertical plate 11 away from the pressing element 32. An electric push rod 214 is fixed to the rear side of the extension plate 213, and the pushing end of the electric push rod 214 is connected to the push sleeve 211 through the push plate 215.

[0033] The clamping element 22 includes a limit plate 221 fixed on the side of the vertical plate 11, and a vertical slide rod 222 is vertically slidably penetrated on the limit plate 221. An arc-shaped clamping plate 223 is fixed on the end of the vertical slide rod 222 close to the avoidance opening, and an arc-shaped friction plate 224 is provided on the inner arc surface of the arc-shaped clamping plate 223. A transmission rod 225 is connected between the end of the vertical slide rod 222 away from the avoidance opening and the connecting plate 212.

[0034] The clamping unit 2 is used to clamp the silicon core tube so that the silicon core tube can maintain a stable state during the pressure detection by the pressure detection unit 3. At the same time, the arc friction plate 224 cooperates with the arc clamping plate 223 to clamp the outer side of the silicon core tube, which can increase the friction between the silicon core tube and the arc clamping plate 223, thereby avoiding the relative sliding of the silicon core tube and the arc clamping plate 223 during the subsequent dynamic and static friction coefficient detection, resulting in deviations in the detection results.

[0035] Specifically, the operator first takes a fixed length of a standard silicon core tube sample and places it on the arc friction plate 224 on the lower side of the two clamping units 2, and then pushes the standard silicon core tube sample to the left until the standard silicon core tube sample reaches the vertical plate 11 on the left, and then controls the electric push rod 214 to push the pushed plate 215 and the pushed sleeve 211, so that the pushed plate 215 and the pushed sleeve 211 move backward, thereby driving the connecting plate 212 to move backward, and the connecting plate 212 will drive the arc clamping plate 223 and the vertical slide bar 222 to move toward the standard silicon core tube sample through the transmission rod 225 until the arc friction plate 224 presses the standard silicon core tube sample, and the two arc friction plates 224 will synchronously press the standard silicon core tube sample up and down and complete the clamping positioning.

[0036] Continue reading Figure 2-Figure 3 The pressure detection unit 3 includes an adjustment structure vertically arranged on the top of the mounting base plate 1, and a positioning structure is arranged on the vertical plate 11 on the right side. The positioning structure is in an inclined state. The adjustment structure and the positioning structure are connected to a pressure element 32 through a cylinder 31, and the two pressure elements 32 are distributed symmetrically with respect to the center.

[0037] The adjustment structure includes a fixed plate 311 fixed on the top of the mounting base plate 1, a limiting slide rail 312 is arranged on the top of the fixed plate 311, a connecting block 313 is connected to the limiting slide rail 312 through a horizontal slider, the cylinder 31 is installed on the connecting block 313, a plurality of positioning seats 314 are fixed horizontally and linearly on the top of the fixed plate 311, a matching plate 315 is fixed on the side of the positioning seat 314 corresponding to the connecting block 313, and a positioning pin is commonly connected to the matching plate 315 and the positioning seat 314 at the corresponding position.

[0038] In this embodiment, if Figure 2 and Figure 3 As shown, the positioning structure is an existing position adjustment type structure, and may also include an inclined plate 316 fixed to the top of the front side of the vertical plate 11 on the right side, an outer frame 317 is fixed to the left side of the inclined plate 316, an inner plate 318 is slidably connected to the outer frame 317, the cylinder 31 is installed at the bottom of the inner plate 318, a plurality of positioning holes 319 are opened on the outer frame 317, and a matching hole is opened on the inner plate 318, and the matching hole and the positioning hole 319 at the corresponding position are commonly connected with a fixing pin.

[0039] The pressure detection unit 3 is used to press the silicon core tube, and at the same time, the silicon core tube is pressed by the inclined pressure element 32, so that the pressure of the pressure element 32 on the silicon core tube is different from the pressure generated during the clamping process of the clamping unit 2, so that it can cooperate with the clamping unit 2 to detect the pressure resistance of the silicon core tube in different directions. At the same time, the position of the pressure element 32 can be adjusted by the adjustment structure and the positioning structure, so that the pressure element 32 can detect the pressure resistance of the silicon core tube at different positions.

[0040] Specifically, after the clamping unit 2 completes the clamping and positioning of the standard silicon core tube sample, the connecting block 313 and the horizontal slider are controlled to move until the horizontal slider and the connecting block 313 move to the specified position, and then the horizontal slider and the connecting block 313 are fixed by the positioning pin, the positioning seat 314 and the matching plate 315, and then the inner plate 318 is pulled until the pressure element 32 on the right side reaches the specified position, and then the position of the inner plate 318 is fixed by the fixing pin passing through the matching hole and the positioning hole 319 at the corresponding position, and then the standard silicon core tube sample can be subjected to a pressure test through the pressing element 32.

[0041] See also Figure 2-Figure 4 The pressing element 32 includes a U-shaped plate 321 fixed on the pushing end of the cylinder 31, the U-shaped plate 321 is in an inclined state, and an arc-shaped collecting plate 322 is commonly connected to the two vertical sections of the U-shaped plate 321, and a plurality of radial downward pressure structures are evenly arranged circumferentially on the arc-shaped collecting plate 322; the radial downward pressure structure includes a radial column 323 sliding through the arc-shaped collecting plate 322, and a square plate 324 is fixed on the end of each radial column 323 close to the U-shaped plate 321, and a compression spring 325 is connected between the square plate 324 and the arc-shaped collecting plate 322, and each radial column 323 is symmetrically hinged with a pressure dividing plate 326 at one end away from the U-shaped plate 321, and a reset torsion spring is arranged at the hinge position of each pressure dividing plate 326 and the radial column 323.

[0042] The pressure element 32 can push the arc-shaped collecting plate 322 through the cylinder 31 and cooperate with each radial downward pressure structure to perform radial pressure testing on the silicon core tube, and can use the pressure plate 326 to simulate the directional pressure of the soil on the silicon core tube after installation, thereby making the test results more practical and making the subsequent dynamic friction coefficient test results closer to reality.

[0043] Specifically, after the positions of the two pressing elements 32 are adjusted, the control cylinder 31 pushes the U-shaped plate 321 to move toward the standard silicon core tube sample, and then the pressure dividing plate 326 contacts the standard silicon core tube sample, and the pressure of the standard silicon core tube sample causes the two on the same radial column 323 to rotate separately, and then continue to press the standard silicon core tube sample, and stretch the compressed spring 325. Thus, the radial column 323 cooperates with the pressure dividing plate 326 to press the standard silicon core tube sample in a multi-point manner. In the subsequent process of testing the silicon core tube sample to be tested, it is necessary to observe whether it is deformed and cracked. If deformation and cracks are generated, it indicates that the compressive resistance of the silicon core tube sample to be tested does not meet the requirements. If deformation and cracks are generated during the clamping and pressing process of the pressing element 32, it indicates that the compressive resistance of the tested silicon core tube sample meets the requirements.

[0044] See also Figure 5-Figure 7The friction detection unit 4 includes a mounting plate 41 fixed on two electric sliders, a threaded column 411 is threadedly connected to the mounting plate 41, and a friction element 43 is connected to the left end of the threaded column 411 through a connecting element 42; an avoidance opening is provided on the right vertical plate 11.

[0045] The connecting element 42 includes a circular plate 421 rotatably connected to the threaded column 411, a left extension column 422 is fixed to the left side of the circular plate 421, a left through groove is provided in the middle of the left extension column 422, an embedded column 423 is slidably connected in the left through groove, a positioning block 424 is fixed to the left end of the embedded column 423, the left end of the positioning block 424 is connected to the friction element 43 through a ball hinge, a rotating sleeve is connected to the positioning block 424 through a thread, and a plurality of compressed round rods 425 connected by connecting springs are evenly arranged in the circumferential direction of the rotating sleeve, and the positioning block A horizontal spring is connected between 424 and the left extension column 422; a stabilizing column is fixed at the bottom of the left extension column 422; a stabilizing slide rail 426 is arranged on the top of the mounting base plate 1 and below the left extension column 422, and the stabilizing slide rail 426 is connected to the stabilizing column via a connecting slider, a vertical groove is opened on the left extension column 422, an upper extension rod 427 is fixed to the top of the right end of the embedded column 423, a No. 1 scale ruler 428 is fixed to the side of the left extension column 422 and at the position corresponding to the vertical groove, and a No. 2 scale ruler 429 is connected to the front side of the mounting plate 41.

[0046] The friction element 43 in the friction detection unit 4 is used to simulate the friction between the external rubber sleeve of the cable and the silicon core tube during the actual installation process, so as to detect the dynamic and static friction coefficients between the external rubber sleeve of the cable and the inner wall of the silicon core tube by driving the electric slider at a uniform speed and pushing the threaded column 411 from a stationary state. Therefore, it is possible to quickly determine whether the dynamic and static friction coefficients of the inner wall of the silicon core tube to be detected meet the requirements by comparing the detection data. At the same time, the compressed round rod 425 can ensure the level of the friction element 43, so that the friction element 43 can contact the inner wall of the silicon core tube as much as possible.

[0047] Specifically, when the pressing element 32 completes the pressing of the standard silicon core tube sample, the two electric sliders are controlled to drive the friction element 43 and the mounting plate 41 to move to the left, so that the friction element 43 is inserted into the silicon core tube, and then the operator assists in pushing the embedded column 423 to the left so that the horizontal spring is at the initial length, and then the position of the compressed round rod 425 is adjusted by rotating the rotating sleeve, and then the threaded column 411 is rotated first and the circular plate 421 and the left extension column 422 are pushed. At this time, the friction element 43 will be due to the standard silicon core tube sample The threaded column 411 is relatively stationary due to the static friction wheel on the inner wall of the sample, so the horizontal spring will be compressed after the threaded column 411 rotates, until the elastic force of the compressed horizontal spring can overcome the maximum static friction between the friction element 43 and the inner wall of the standard silicon core tube sample. At this time, the moving distance of the upper extension rod 427 will be inconsistent with the moving distance of the threaded column 411, that is, the reading of the No. 1 scale 428 is not equal to the initial reading of the No. 2 scale 429 minus the reading of the No. 2 scale 429 after the threaded column 411 is rotated. At this time, the reading of the No. 2 scale 429 is recorded.

[0048] In the subsequent testing process of the silicon core tube sample to be tested, the reading of the No. 2 scale 429 of the silicon core tube sample to be tested is compared with the No. 2 scale 429 of the standard silicon core tube sample. If the reading of the No. 2 scale 429 during the testing of the silicon core tube sample to be tested is greater than the reading of the No. 2 scale 429 of the standard silicon core tube sample, it indicates that when the moving distance of the threaded column 411 is small, the friction detection unit 4 slides relative to the silicon core tube sample to be tested, which means that the static friction coefficient of the silicon core tube sample to be tested is smaller than that of the standard silicon core tube sample and meets the requirements. If the reading of the No. 2 scale 429 during the testing of the silicon core tube sample to be tested is less than the reading of the No. 2 scale 429 of the standard silicon core tube sample, it indicates that when the moving distance of the threaded column 411 is large, the friction detection unit 4 slides relative to the silicon core tube sample to be tested, which means that the static friction coefficient of the silicon core tube sample to be tested is greater than that of the standard silicon core tube sample and does not meet the requirements.

[0049] After the reading of the No. 1 scale 428 is recorded, the electric slider is controlled to move the friction element 43 and the mounting plate 41 to the left at a constant speed until the friction element 43 moves to the position passing the pressing element 32 on the left, and then the electric slider is controlled to stop. During this process, observe whether the upper extension rod 427 moves. If it moves, immediately record the reading of the No. 1 scale 428 until the electric slider moves. In the subsequent testing of the silicon core tube sample to be tested, there will be a same set of No. 1 scale 428 reading data, and then through the set of No. 1 scale 428 reading data and the silicon core tube sample to be tested A group of data of No. 1 scale 428 readings of the standard silicon core tube sample are compared. If the data of the No. 1 scale 428 readings of the silicon core tube sample to be tested is more or generally greater than the No. 1 scale 428 readings of the standard silicon core tube sample, it indicates that the dynamic friction coefficient of the inner wall part of the silicon core tube sample to be tested is greater than that of the standard silicon core tube sample, indicating that the dynamic friction coefficient of the inner wall of the silicon core tube to be tested does not meet the requirements. If the data of the No. 1 scale 428 readings of the silicon core tube sample to be tested are consistent with the number of No. 1 scale 428 readings of the standard silicon core tube sample, and the data error is not large, it indicates that the dynamic friction coefficient of the silicon core tube sample to be tested meets the requirements.

[0050] See also Figure 7-Figure 8 The friction element 43 includes a mounting block 431 arranged at the left end of the connecting element 42, a threaded section is arranged at the left end of the side surface of the mounting block 431, and a mounting sleeve 432 is threadedly connected to the threaded section of the side surface of the mounting block 431. The mounting sleeve 432 is used to install the rubber sleeve for packaging cables, and an outward pushing structure for pushing the rubber sleeve outward is arranged in the mounting block 431; the outward pushing structure includes an inner groove 433 provided in the mounting block 431, a pushing block 434 is slidably connected in the inner groove 433, and an adjusting The section stud 435 and the adjusting stud 435 are threadedly connected with the mounting block 431. The mounting block 431 is symmetrically provided with external through grooves 436 located at the upper and lower positions of the inner groove 433. An external push rod 437 is slidably connected in the external through groove 436. A matching inclined surface is provided between the external push rod 437 and the pushing block 434. Horizontal plates 438 are symmetrically fixed on the left and right sides of the external push rod 437. An avoidance groove 439 is provided in the mounting block 431 and corresponds to the position of the horizontal plate 438. An inner spring is connected between the horizontal plate 438 and the side wall of the avoidance groove 439.

[0051] The friction element 43 is used to install the rubber sleeve for packaging the cable, thereby simulating the actual application scenario in which the cable is pushed through the inside of the silicon core tube and installed during the use and installation of the silicon core tube. At the same time, the rubber sleeve is pushed outward by the outward push structure, which is closer to the situation in which the rubber sleeve has bulges in some positions during actual use, affecting the friction between the rubber sleeve and the inner wall of the silicon core tube.

[0052] Specifically, before controlling the two electric sliders to drive the friction element 43 and the mounting plate 41 to move to the left, first, the mounting sleeve 432 connected to the rubber sleeve is stably installed on the mounting block 431 by means of a threaded connection, and then the adjusting stud 435 is rotated to push the pushing block 434. The pushing block 434 will push the outer push rod 437 outward through the mutual pushing action of the matching inclined surfaces, and the outer push rod 437 will push the rubber sleeve, thereby causing the rubber sleeve to bulge in some parts.

[0053] The working steps of the present invention are as follows: In the first step, the operator takes a standard silicon core tube sample of a fixed length and places it on the arc friction plate 224 on the lower side of the two clamping units 2, and then pushes the standard silicon core tube sample to the left until the standard silicon core tube sample reaches the vertical plate 11 on the left, and then controls the electric push rod 214 to synchronously drive the two clamping elements 22, so that the two arc friction plates 224 synchronously press the standard silicon core tube sample up and down and complete the clamping positioning.

[0054] In the second step, after the clamping unit 2 completes the clamping and positioning of the standard silicon core tube sample, the positions of the two pressing elements 32 are adjusted respectively through the adjustment structure and the positioning structure, and then the cylinder 31 is controlled to push the U-shaped plate 321 to move toward the standard silicon core tube sample, and then the pressure dividing plate 326 contacts the standard silicon core tube sample, and due to the pressure of the standard silicon core tube sample, the two on the same radial column 323 rotate separately, thereby continuing to press the standard silicon core tube sample and stretching the compressed spring 325.

[0055] In the third step, after the pressing element 32 has pressed the standard silicon core tube sample, the installation sleeve 432 connected with the rubber sleeve is installed first, and then the stud 435 is adjusted to cooperate with the outer push rod 437 to make the rubber sleeve partly bulge, and then the two electric sliders are controlled to drive the friction element 43 and the mounting plate 41 to move to the left, so that the friction element 43 is inserted into the silicon core tube, and then the embedded column 423 is pushed to the left with the assistance of the operator so that the horizontal spring is at the initial length, and then the threaded column 411 is rotated first and the circular plate 421 and the left extension column 422 are pushed. At this time, the friction element Component 43 will be relatively still due to the static friction wheel on the inner wall of the standard silicon core tube sample. Therefore, after the threaded column 411 rotates, the horizontal spring will be compressed until the elastic force of the compressed horizontal spring can overcome the maximum static friction between the friction component 43 and the inner wall of the standard silicon core tube sample. At this time, the moving distance of the upper extension rod 427 will be inconsistent with the moving distance of the threaded column 411, that is, the reading of the No. 1 scale 428 is not equal to the initial reading of the No. 2 scale 429 minus the reading of the No. 2 scale 429 after the threaded column 411 rotates. At this time, the reading of the No. 2 scale 429 is recorded.

[0056] After the reading of the No. 1 scale 428 is recorded, the electric slider is controlled to drive the friction element 43 and the mounting plate 41 to move to the left at a constant speed until the friction element 43 moves to the position of the pressing element 32 on the left side, and then the electric slider is controlled to stop. During this process, observe whether the upper extension rod 427 moves. If it moves, immediately record the reading of the No. 1 scale 428 until the electric slider completes its movement.

[0057] The fourth step is to remove the standard silicon core tube sample after the test is completed, and then the operator takes a section of the silicon core tube sample to be tested that is equal in length to the standard silicon core tube sample, and repeats the above test operation. During the test of the silicon core tube sample to be tested, it is necessary to observe whether it is deformed and cracked. If deformation and cracks are generated, it indicates that the compressive strength of the silicon core tube sample to be tested does not meet the requirements. If deformation and cracks are generated during the clamping and pressing process of the pressing element 32, it indicates that the compressive strength of the tested silicon core tube sample meets the requirements.

[0058] The fifth step is that during the testing of the silicon core tube sample to be tested, there will be the same set of data of the No. 1 scale 428 readings, and then by comparing the data of the No. 1 scale 428 readings of the silicon core tube sample to be tested with the data of the No. 1 scale 428 readings of the standard silicon core tube sample, if the data of the No. 1 scale 428 readings of the silicon core tube sample to be tested is more or generally greater than the No. 1 scale 428 readings of the standard silicon core tube sample, it indicates that the dynamic friction coefficient of the inner wall part of the silicon core tube sample to be tested is greater than that of the standard silicon core tube sample, which indicates that the dynamic friction coefficient of the inner wall of the silicon core tube to be tested does not meet the requirements; if the data of the No. 1 scale 428 readings of the silicon core tube sample to be tested are consistent with the number of the No. 1 scale 428 readings of the standard silicon core tube sample, and the data error is not large, it indicates that the dynamic friction coefficient of the silicon core tube sample to be tested meets the requirements.

[0059] In the subsequent testing process of the silicon core tube sample to be tested, the reading of the No. 2 scale 429 of the silicon core tube sample to be tested is compared with the No. 2 scale 429 of the standard silicon core tube sample. If the reading of the No. 2 scale 429 during the testing of the silicon core tube sample to be tested is greater than the reading of the No. 2 scale 429 of the standard silicon core tube sample, it indicates that when the moving distance of the threaded column 411 is small, the friction detection unit 4 slides relative to the silicon core tube sample to be tested, which means that the static friction coefficient of the silicon core tube sample to be tested is smaller than that of the standard silicon core tube sample and meets the requirements. If the reading of the No. 2 scale 429 during the testing of the silicon core tube sample to be tested is less than the reading of the No. 2 scale 429 of the standard silicon core tube sample, it indicates that when the moving distance of the threaded column 411 is large, the friction detection unit 4 slides relative to the silicon core tube sample to be tested, which means that the static friction coefficient of the silicon core tube sample to be tested is greater than that of the standard silicon core tube sample and does not meet the requirements.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A HDPE silicon core pipe performance testing device, comprising a mounting base plate (1), a vertical plate (11) being fixed symmetrically on the top of the mounting base plate (1), and a horizontal slide rail (12) being symmetrically installed on the top of the mounting base plate (1) and on the right side of the vertical plate (11), characterized in that: A clamping unit (2) for clamping the silicon core tube is provided on opposite sides of the two vertical plates (11), a pressing detection unit (3) is provided on the installation base plate (1) and the vertical plate (11) on the right side, and a friction detection unit (4) is connected to the two horizontal slide rails (12) via an electric slider; The pressure detection unit (3) comprises an adjustment structure vertically arranged on the top of the mounting base plate (1); a positioning structure is arranged on the right vertical plate (11); the positioning structure is in an inclined state; the adjustment structure and the positioning structure are both connected to a pressure element (32) via a cylinder (31); and the two pressure elements (32) are symmetrically distributed around the center; The clamping unit (2) comprises a square column (21) fixed on the rear side of the vertical plate (11), a push sleeve (211) is slidably connected to the square column (21), a connecting plate (212) is fixed on the side of the push sleeve (211) close to the pressing element (32), a clamping element (22) driven synchronously by the connecting plate (212) is symmetrically arranged on the side of the vertical plate (11) close to the pressing element (32), an extension plate (213) is fixed on the side of the vertical plate (11) away from the pressing element (32), an electric push rod (214) is fixed on the rear side of the extension plate (213), and a push end of the electric push rod (214) is connected to the push sleeve (211) through a push plate (215); The friction detection unit (4) comprises a mounting plate (41) fixed on two electric sliders, a threaded column (411) is threadedly connected to the mounting plate (41), and a friction element (43) is connected to the left end of the threaded column (411) via a connecting element (42); and an avoidance opening is provided on the right vertical plate (11).

2. A HDPE silicon core pipe performance testing device according to claim 1, characterized in that: The adjustment structure comprises a fixing plate (311) fixed on the top of the installation base plate (1); a limiting slide rail (312) is arranged on the top of the fixing plate (311); a connecting block (313) is connected to the limiting slide rail (312) via a horizontal sliding block; the cylinder (31) is mounted on the connecting block (313); a plurality of positioning seats (314) are fixed horizontally and linearly on the top of the fixing plate (311); a matching plate (315) is fixed on the side of the connecting block (313) corresponding to the positioning seat (314); and a positioning pin is commonly connected to the matching plate (315) and the positioning seat (314) at the corresponding position.

3. The HDPE silicon core pipe performance testing device according to claim 1, characterized in that: The pressing element (32) comprises a U-shaped plate (321) fixed to the pushing end of the cylinder (31); the U-shaped plate (321) is in an inclined state; two vertical sections of the U-shaped plate (321) are commonly connected to an arc-shaped collecting plate (322); and a plurality of radial downward pressing structures are evenly arranged on the arc-shaped collecting plate (322) in a circumferential direction.

4. A HDPE silicon core pipe performance testing device according to claim 3, characterized in that: The radial downward pressure structure includes radial columns (323) slidingly passing through the arc-shaped collecting plate (322), a square plate (324) is fixed to one end of each radial column (323) close to the U-shaped plate (321), a compression spring (325) is connected between the square plate (324) and the arc-shaped collecting plate (322), and a pressure dividing plate (326) is symmetrically hinged to one end of each radial column (323) away from the U-shaped plate (321), and a return torsion spring is provided at the hinge position between each pressure dividing plate (326) and the radial column (323).

5. The HDPE silicon core pipe performance testing device according to claim 1, characterized in that: The clamping element (22) comprises a limit plate (221) fixed on the side of the vertical plate (11), a vertical slide bar (222) vertically slidingly penetrates the limit plate (221), an arc-shaped clamping plate (223) is fixed to one end of the vertical slide bar (222) close to the avoidance opening, an arc-shaped friction plate (224) is arranged on the inner arc surface of the arc-shaped clamping plate (223), and a transmission rod (225) is connected between one end of the vertical slide bar (222) away from the avoidance opening and the connecting plate (212).

6. The HDPE silicon core pipe performance testing device according to claim 1, characterized in that: The connecting element (42) comprises a circular plate (421) rotatably connected to the threaded column (411), a left extension column (422) is fixed on the left side of the circular plate (421), a left through groove is arranged in the middle of the left extension column (422), an embedded column (423) is slidably connected in the left through groove, a positioning block (424) is fixed at the left end of the embedded column (423), the left end of the positioning block (424) is connected to the friction element (43) through a ball hinge, a rotating sleeve is connected to the positioning block (424) through a thread, a plurality of compressed round rods (425) connected by connecting springs are evenly arranged in the circumference of the rotating sleeve, and a horizontal spring is connected between the positioning block (424) and the left extension column (422).

7. A HDPE silicon core pipe performance testing device according to claim 6, characterized in that: A stabilizing column is fixed at the bottom of the left extension column (422); a stabilizing slide rail (426) is arranged at the top of the installation base plate (1) and below the left extension column (422); the stabilizing slide rail (426) is connected to the stabilizing column via a connecting slider; a vertical groove is provided on the left extension column (422); an upper extension rod (427) is fixed to the top of the right end of the embedded column (423); a No. 1 scale (428) is fixed to the side of the left extension column (422) and at a position corresponding to the vertical groove; and a No. 2 scale (429) is connected to the front side of the installation plate (41).

8. The HDPE silicon core pipe performance testing device according to claim 1, characterized in that: The friction element (43) comprises a mounting block (431) arranged at the left end of the connecting element (42); a threaded section is arranged at the left end of the side surface of the mounting block (431); a mounting sleeve (432) is threadedly connected to the threaded section of the side surface of the mounting block (431); the mounting sleeve (432) is used to install a rubber sleeve for packaging the cable; and an outward pushing structure for pushing the rubber sleeve outward is arranged inside the mounting block (431).

9. A HDPE silicon core pipe performance testing device according to claim 8, characterized in that: The push-out structure comprises an inner groove (433) provided in the mounting block (431), a push block (434) being slidably connected in the inner groove (433), an adjusting stud (435) being rotatably installed at the left end of the push block (434), the adjusting stud (435) being threadedly connected to the mounting block (431), an outer through groove (436) being symmetrically provided in the mounting block (431) and located at the upper and lower positions of the inner groove (433), an outer push rod (437) being slidably connected in the outer through groove (436), a matching inclined surface being provided between the outer push rod (437) and the push block (434), and a reset structure being symmetrically provided on the left and right sides of the outer push rod (437).

10. A HDPE silicon core pipe performance testing device according to claim 9, characterized in that: The reset structure comprises a horizontal plate (438) fixed on the side of the outer push rod (437), an avoidance groove (439) is provided in the mounting block (431) and corresponds to the position of the horizontal plate (438), and an inner spring is connected between the horizontal plate (438) and the side wall of the avoidance groove (439).

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