CN115372136A - Rolling resistance-reducing type movable lifting auxiliary device for variable-size flexible pipe cable experiment - Google Patents
Rolling resistance-reducing type movable lifting auxiliary device for variable-size flexible pipe cable experiment Download PDFInfo
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Abstract
The utility model provides a portable lift auxiliary device of flexible pipe cable experiment of rolling resistance-reducing formula variable dimension, belongs to flexible pipe cable experiment test auxiliary device field, is applicable to the rigidity performance test of not unidimensional flexible pipe cable, including becoming unidimensional centre gripping planker device, rotary device and mobile device, wherein rotary device is located between size centre gripping planker device and the mobile device, and the three is the components of a whole that can function independently device, and the axis of three device is on same vertical plane after the assembly, guarantees that the deformation that transmits to unidimensional centre gripping planker device and rotary device through flexible pipe cable is the same in the experimentation. The invention is beneficial to reducing the result error caused by the dead weight influence of the flexible pipe cable and the friction between the flexible pipe cable and the supporting plate; the variable-size and variable-position clamping function can be realized, the compatibility is strong, and the stability is strong; the rotating device is designed by adopting a mark with an angle, so that subsequent statistical data are facilitated; the invention has simple structure, reliable performance, small volume and convenient operation, and is suitable for prototype measurement in a laboratory.
Description
Technical Field
The invention belongs to the field of auxiliary devices for testing flexible pipe cables, and relates to a movable lifting auxiliary device for rolling resistance-reducing type variable-size flexible pipe cable experiments, which is suitable for auxiliary tests of rigidity (stretching, twisting and bending) performances of 8-20-inch flexible pipe cables (oil and gas energy development, floating wind power, deep sea mining and the like) in a laboratory.
Background
Along with the gradual depletion of land oil and gas traditional resources, the development and utilization of ocean oil and gas resources and new energy are increasingly paid attention by countries in the world. Deep sea cables, umbilical cables and low-temperature flexible pipelines (collectively called flexible pipe cables) are vital structural equipment in ocean energy exploitation, and can be used for connecting overwater floating bodies with underwater exploitation equipment, and transporting ship bodies with shore stations. Deep sea cable refers to equipment used for power, communication and related transmission purposes; the umbilical cable can additionally transmit hydraulic chemical agents on the basis of the marine cable; the cryogenic flexible pipeline is equipment for transporting oil and gas resources or transporting LNG.
The flexible pipe cable structure comprises a single-layer or multi-layer spirally wound armor layer and has the structural characteristics of non-adhesion, sliding, spiral winding and the like. The flexible pipe cable is influenced by bending, torsion and tensile load when in service, so that the service life of the flexible pipe cable is influenced, and the mechanical property of the flexible pipe cable under the action of the load is difficult to accurately describe by the conventional theory and numerical method, so that the mechanical property needs to be determined through experiments. The influence of gravity is generally ignored when domestic scientific research institutions test the mechanical properties of the flexible pipe cable. For example, in the stretching and twisting test, the pipeline can form a u shape due to the action of gravity, so that the measurement result is inaccurate; during a bending test, a clamp with a roller is used for clamping the pipe cable, and the influence of gravity and the friction of the clamp on the pipe cable causes an inaccurate measuring result; foreign relevant accredited testing organization uses simple and easy auxiliary device to carry out the test of pipe cable bending property, but can only accomplish the test of single size pipe cable, and the plane still has the friction with the pipe cable, and the wheel design can make the condition that whole skew appears and then influence data acquisition in the experimentation. Therefore, the technology of the auxiliary device for testing the flexible pipe cable in China is yet to be broken through, a simple general structure is not available for the time, and the auxiliary device is not suitable for small-sized measurement in a laboratory.
Disclosure of Invention
The invention provides an auxiliary device for testing mechanical properties of a flexible pipe cable, aiming at solving the defects of inconvenient installation, overlarge volume and inaccurate measurement result caused by gravity friction of the traditional testing device and facilitating the test of a small laboratory aiming at the laggard related technical field of the auxiliary device for testing the structural prototype of the pipe cable.
In order to achieve the purpose, the invention adopts the technical scheme that:
a rolling resistance-reducing type movable lifting auxiliary device for a variable-size flexible pipe cable experiment comprises a variable-size clamping planker device 1, a rotating device 2 and a moving device 3, wherein the rotating device 2 is located between the size clamping planker device 1 and the moving device 3. The axis of the variable-size clamping carriage device 1, the axis of the rotating device 2, the axis of the moving device 3 and the axis of the flexible pipe cable are coplanar, so that the same deformation transmitted to the variable-size clamping carriage device 1 and the rotating device 2 through the flexible pipe cable in the experimental process is ensured.
The variable-size clamping carriage device 1 comprises a carriage 4, a spherical ball 9, a variable-size circular through hole 10 and a detachable clamping protection rod 17. Spherical grooves are processed on the upper surface of the supporting plate 4 and distributed in a matrix form and used for mounting spherical balls 9, the spherical balls 9 are in a semi-embedded design on the upper surface of the supporting plate 4, and after mounting, part of the surfaces of the spherical balls 9 protrude out of the upper surface of the supporting plate 4 and are used for reducing friction between a flexible pipe cable and the supporting plate in the experimental process and reducing experimental errors; a circular through hole 10 for installing a detachable clamping protection rod 17 is formed between the spherical grooves on the surface of the supporting plate 4, wherein the detachable clamping protection rod 17 is used for installing pipe cables with different sizes; the center of the supporting plate 4 is provided with a plurality of through holes 11 used for being connected with the rotating device 2, the through holes correspond to the round holes 16 on the upper surface of the rotating disc 6 with the angle display and are connected through high-strength bolts. The rolling resistance-reducing type size-variable flexible pipe cable experiment movable lifting auxiliary device can be placed on the lower portion of any position of a flexible pipe cable according to experiment types, a proper circular through hole 10 is selected according to the size of the flexible pipe cable, a detachable clamping protection rod 17 is installed, and a fixing and holding effect is achieved.
The rotating device 2 is arranged below the variable-size clamping carriage device 1 and comprises a rotating disc 6 with an angle display, and round holes 16 are formed in the upper surface and the lower surface of the rotating disc 6 with the angle display and are used for being connected with the variable-size clamping carriage device 1 and the moving device 3. The angle display turntable 6 can record the plane angle of rotation of the flexible pipe cable in the bending stiffness experiment process in real time.
The moving device 3 is arranged below the rotating device 2 and comprises a bottom supporting plate 5 and a pulley device 7. The center of the bottom supporting plate 5 is provided with a through hole 11 used for being connected with the rotating device 2, and a round hole 16 in the lower surface of the rotating disc 6 with the angle display corresponds to the through hole 11 and is connected with the through hole through a high-strength bolt. Through holes 8 are reserved on two sides of the bottom supporting plate 5, and detachable handles 13 are installed (the detachable handles 13 penetrate through the through holes 8 through high-strength bolts to be fixed on the bottom supporting plate 5). The bottom of the bottom supporting plate 5 is provided with a round hole 12 which is fixed with the pulley device 7 through a high-strength bolt, so that the pulley device 7 can realize 360-degree free rotation in a plane; the pulley device 7 comprises an octagonal connecting device 15 and guide wheels 14, a through round hole 12 for allowing the high-strength bolt to pass through is formed in the center of the octagonal connecting device 15, the guide wheels 14 are arranged on two sides of the octagonal connecting device, and the pulley device 7 can rotate circumferentially.
The variable-size clamping carriage device 1, the rotating device 2 and the moving device 3 are split devices, and the variable-size clamping carriage device 1 and the moving device 3 penetrate through a central circular hole of the variable-size clamping carriage device through high-strength bolts to be connected with the rotating device 2, so that the whole auxiliary device is assembled; the axes of the three devices are on the same vertical plane after assembly, so that the rotation simplicity of the auxiliary device in the bending experiment process is ensured, and the error of the experiment result is reduced. According to experiment type and flexible pipe cable size selection can dismantle the mounted position of centre gripping protection stick 17, should roll according to pipeline length and weight selection during the experiment and fall the portable lift auxiliary device's of flexible pipe cable experiment of hindering formula variable size quantity, select to roll according to the experiment type and fall the portable lift auxiliary device's of flexible pipe cable experiment of hindering formula variable size place the position: for example, in a bending experiment, when the movable lifting auxiliary device for the rolling resistance-reducing type variable-size flexible pipe cable experiment is placed at the end part of a flexible pipe cable sample, the detachable clamping protection rod 17 is arranged in two vertical rows of circular through holes 10 corresponding to the size of the pipe cable, close to one side edge of the variable-size clamping planker device 1; when the flexible pipe cable experiment movable lifting auxiliary device is placed at any position below a flexible pipe cable sample in a stretching and twisting experiment, the detachable clamping protection rod 17 is arranged in two vertical rows of circular through holes 10 at two ends of the clamping carriage device 1.
Further, the length and the width of the variable-size clamping carriage device 1 are consistent with those of the moving device 3, the variable-size clamping carriage device 1 fixes the rotating device 2 from the upper part through the high-strength bolts 17 penetrating through the round holes 11 and 16, and the moving device 3 fixes the rotating device 2 from the lower part through the high-strength bolts penetrating through the round holes 11 and 16, so that the axes of the variable-size clamping carriage device 1, the rotating device 2 and the moving device 3 are overlapped.
Further, the main body of the pulley device 7 is an octagonal connecting device 15, the main body is designed to be octagonal, and the guide wheels 14 are fixed on two side edges of the lower portion of the octagonal connecting device 15, so that an acute angle is formed after the guide wheels 14 are installed, and the moving stability of the movable auxiliary device is guaranteed.
Further, the center of the lower surface of the supporting plate 4 is provided with a cylindrical recess which has the same size as the upper surface of the angle display turntable 6, the through type round hole 11 is processed on the upper surface of the supporting plate 4 to be aligned with the round hole 16, so that the high-strength bolt can pass through the round holes 11 and 16 to fix the rotating device 2 from the upper part, and the center alignment of the supporting plate 4 and the center of the angle display turntable 6 is ensured.
Furthermore, the center of the upper surface of the bottom supporting plate 5 is provided with a cylindrical recess with the same size as the lower surface of the rotating disc with the angle display 6, the lower surface of the supporting plate 5 is provided with a through type round hole 11 aligned with a round hole 16, a high-strength bolt can conveniently penetrate through the round holes 11 and 16 to fix the rotating device 2 from the lower part, and the center alignment of the bottom supporting plate 5 and the center of the rotating disc with the angle display 6 is ensured.
Furthermore, the rotating device 2 is arranged at the cylindrical concave parts of the variable-size clamping carriage device 1 and the moving device 3, the rotating device is vertically extruded through high-strength bolts to further connect and fix the variable-size clamping carriage device 1 and the moving device 3, and plane rotating motion is provided for the variable-size clamping carriage device 1 through the rotating device 2.
Further, 4 upper surface both ends of layer board and apart from wherein one end 1/4 department respectively with layer board 4 major axis symmetry processing six round holes 10, correspond 8 cun, 10 cun, 12 cun, 14 cun, 16 cun, 20 cun flexible pipe cable diameters respectively with the round hole 10 of major axis symmetry, will dismantle the fixed round hole 10 that corresponds of centre gripping protective rod 17 according to flexible pipe cable sample diameter size, thereby realize becoming the size and shift the flexible pipe cable effect of centre gripping according to the experiment type.
Furthermore, the angle display rotary table 6 is a rotatable rotary table, an initial position 0-degree standard line is manufactured at the lower half part, an angle line of 0-360 degrees is manufactured at the periphery of the upper half part, and 1 degree is used as a unit scale line for recording the angle change of the end part of the flexible pipe cable in the experiment process. The height of the upper half part of the rotary table 6 with the angle display is higher than that of the concave part of the lower surface of the supporting plate 4, so that the angle mark line can leak out; the height of the lower half part of the angle display rotary table 6 is higher than that of the sunken part of the supporting plate 5, so that standard lines can be leaked, angle marking lines on the rotary table can be conveniently leaked, and the variable-size clamping carriage device 1 can rotate.
Furthermore, 4 through holes 8 are symmetrically processed at two ends of the supporting plate 5 respectively along the long axis of the supporting plate 5, a detachable handle 13 is fixed on the bottom supporting plate 5 through the through holes 8 through high-strength bolts, the detachable handle 13 can be installed before an experiment, the detachable handle 13 can be removed during the experiment, and the rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device can be conveniently moved to a designated position in a back-and-forth moving mode in the experiment.
The invention is suitable for a laboratory auxiliary test of rigidity performance of 8-20 inch flexible pipe cables, wherein the rigidity comprises stretching, twisting and bending, and the concrete steps are as follows:
the tensile test and the torsion test of the flexible pipe cable generally select the length of the flexible pipe cable with the diameter 10 times of the diameter of the flexible pipe cable as an experimental sample, when two ends of the flexible pipe cable are respectively fixed on a testing machine, the integral line can be changed into a u shape due to the action of the gravity of the flexible pipe cable, the axis of the flexible pipe cable can deviate from the axis of a force application end of the testing machine, the tensile force and the torque of a part of the testing machine can resist the gravity, and the test result is further influenced; however, when the flexible pipe cable is placed on a flat plate with the same height for stretching and twisting to avoid the influence of gravity, larger friction is generated between the flexible pipe cable and the flat plate, and then the test result is influenced. Then for the tensile and torsional tests of the flexible pipe cable, the advantages of the invention are as follows: 1) The device can be placed at any position below the flexible pipe cable, so that the influence of gravity on an experimental result is eliminated; 2) The device is provided with a guide wheel which can move freely, and the guide wheel is arranged at an acute angle to ensure that the device can move according to a preset track; 3) The spherical balls are arranged on the surface of the device, so that the friction between the flexible pipe cable and the device can be reduced, and the experimental error is further reduced; 4) The internal depression of the device can further realize the lifting and the lowering of the device by adding the gasket, and the compatibility is stronger.
The bending experiment of flexible pipe cable can select the length of flexible pipe cable self 10 times diameter usually as experimental sample, because its self action of gravity whole line type can become the u type when flexible pipe cable both ends are fixed respectively on the testing machine, can lead to the measuring point not accurate to it changes to be difficult for observing flexible pipe cable tip angle, and then influences the test result. The invention has the advantages that: 1) The flexible pipe cable can be horizontally placed on a plurality of devices, so that the influence of initial gravity is eliminated, and the requirements of experimental specifications are met; 2) The device is designed in a split manner, the variable-size clamping carriage device in contact with the flexible pipe cable can realize free rotation in a plane, and the rotating device can record the angle change of the end part of the flexible pipe cable in real time, so that the subsequent experimental data can be conveniently processed; 3) Spherical balls are arranged on the surface of the device, so that friction between the flexible pipe cable and the device can be reduced, and experimental errors are reduced.
The invention has the beneficial effects that:
(1) The variable-size clamping carriage device adopts a rectangular design, is convenient for bearing the flexible pipe cable in the largest area, and is beneficial to reducing result errors caused by the self-weight influence of the flexible pipe cable.
(2) The upper surface of the variable-size clamping carriage device adopts a matrix type steel ball arrangement design, so that the friction between the flexible pipe cable and the carriage is favorably reduced.
(3) The upper surface of the variable-size clamping carriage device is symmetrically provided with the plurality of round holes along the long axis, so that the device is favorable for selecting the corresponding round holes to install the detachable clamping protection rods according to different experiment types (bending, stretching and twisting) and sizes of flexible cables, realizes the variable-size and variable-position clamping function, and has strong compatibility.
(4) According to the invention, the two ends of the moving device are symmetrically provided with the through round holes with long axes, the detachable handle can be freely detached through the round holes according to the experiment requirements, and the rolling resistance-reducing type flexible pipe cable experiment movable lifting auxiliary device can be freely moved to the specified position.
(5) According to the invention, the pulley device is arranged at the lower end of the moving device, and the guide wheels are arranged at an acute angle, so that the movable lifting auxiliary device for the rolling resistance-reducing type variable-size flexible pipe cable experiment has strong stability.
(6) The rotating device is designed by adopting the mark with the angle, thereby being beneficial to recording the change of the angle in the experimental process and facilitating the statistics of the subsequent experimental data.
(7) The invention adopts a split design, and uses a rotating device to connect and fix the variable-size clamping carriage device and the moving device, thereby ensuring that the moving device does not rotate and the variable-size clamping carriage device does planar rotation motion in a bending experiment.
(8) The variable-size clamping carriage device and the moving device are provided with the groove design, so that the recess can be filled according to the experiment requirement, the ground clearance of the variable-size clamping carriage device can be increased, and the experiment type can be further provided with stronger compatibility.
(9) The movable lifting device designed in the invention has the advantages of simple structure, reliable performance, small volume and convenient operation, and is suitable for prototype measurement in a laboratory.
Drawings
Fig. 1 is an overall structure front view of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 2 is a top view of the whole structure of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 3 is a side view of the whole structure of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 4 is a three-dimensional schematic diagram of a clamping overall structure of one side of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 5 is a three-dimensional schematic diagram of a clamping overall structure of two ends of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 6 is a structural front view of a variable-size clamping carriage device of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 7 is a structural plan view of a variable-size clamping carriage device of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 8 is a structural side view of a variable-size clamping carriage device of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 9 is a three-dimensional schematic diagram of the structure end clamping of a variable-size clamping carriage device of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 10 is a three-dimensional schematic diagram of one side clamping structure of a variable-size clamping carriage device of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 11 is a three-dimensional schematic view of a surface depression design of a variable-size clamping carriage device structure of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 12 is a three-dimensional schematic diagram of a variable-size clamping carriage device structure upper surface spherical ball matrix design of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device.
Fig. 13 is a structural plan view of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 14 is a structural side view of a rotating device of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 15 is a structural front view of a movable device of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 16 is a top view of a movable device for rolling resistance-reducing type movable lifting auxiliary device for flexible umbilical experiment.
Fig. 17 is a structural side view of a movable device of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 18 is a three-dimensional schematic view of a structure of a movable device of a rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment.
Fig. 19 is a three-dimensional schematic view of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device in a rotating state during a bending experiment.
Fig. 20 is an auxiliary three-dimensional schematic diagram of a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device during stretching and twisting experiments.
In the figure: 1, clamping a carriage device with variable sizes; 2, a rotating device; 3 moving the device; 4, supporting plates; 5, a bottom supporting plate; 6, a rotating disc with an angle display function; 7 a pulley device; 8, a circular through hole; 9 spherical balls; 10 variable size circular holes; 11 a circular through hole; 12 penetrate through the round hole; 13 the handle can be assembled and disassembled; 14 guide wheels; 15 octagonal attachment means; 16 round hole 17 can detachably hold the protection rod.
Detailed Description
The present invention is further illustrated by the following specific examples.
A rolling resistance-reducing type movable lifting auxiliary device for a variable-size flexible pipe cable experiment comprises a variable-size clamping carriage device 1, a rotating device 2 and a moving device 3, wherein the rotating device 2 is located between the variable-size clamping carriage device 1 and the moving device 3. The variable-size clamping carriage device 1, the rotating device 2 and the moving device 3 are split devices, and the variable-size clamping carriage device 1 and the moving device 3 penetrate through a central circular hole of the variable-size clamping carriage device through high-strength bolts to be connected with the rotating device 2, so that the whole auxiliary device is assembled; the centers of the three devices are on the same vertical axis after assembly, so that the rotation simplicity of the auxiliary device in the experimental process is ensured, and the error of the experimental result is reduced. And the axis of the variable-size clamping carriage device 1, the rotating device 2, the moving device 3 and the flexible pipe cable are coplanar.
The variable-size clamping carriage device 1 comprises a supporting plate 4, a spherical ball 9, a variable-size clamping rod 10 and a detachable clamping protection rod 17. Spherical grooves are processed on the upper surface of the supporting plate 4 and distributed in a matrix form and used for mounting spherical balls 9, and partial surfaces of the mounted spherical balls 9 protrude out of the upper surface of the supporting plate 4; the upper surface of the supporting plate 4 is provided with a circular through hole 10 for mounting a detachable clamping protection rod 17; the center of the supporting plate 4 is provided with a through hole 11 for connecting with the rotating device 2. The size-variable clamping planker device 1 can select a circular through hole 10 at a proper position to install a detachable clamping protection rod 17 according to the size of the flexible pipe cable and the experimental type (bending, stretching and twisting), and the function of fixing is achieved at the beginning.
The rotating device 2 is arranged below the variable-size clamping carriage device 1 and comprises an angle display turntable 6, and a circular through hole 16 used for being connected with the size clamping carriage device 1 and the moving device 3 is formed in the angle display turntable 6. The rotating disc with the angle display function can record the rotating angle of the flexible pipe cable in the experimental process in real time.
The moving device 3 is arranged below the rotating device 2 and comprises a bottom supporting plate 5 and a pulley device 7. The center of the bottom supporting plate 5 is provided with a through hole 11 used for being connected with the rotating device 2. The detachable handle 13 can be installed on any side of the bottom supporting plate 5 (the detachable handle 13 is fixed on the bottom supporting plate 5 through the round hole 8 through a high-strength bolt). The bottom of the bottom supporting plate 5 is provided with a round hole 12 which is fixed with the pulley device 7 through a high-strength bolt, so that the pulley device 7 can freely realize 360-degree rotation of a plane; pulley gear 7 includes octagon connecting device 15, guide pulley 14, and octagon connecting device 15 center is equipped with and is used for passing the round hole 12 that runs through high strength bolt, and both sides are equipped with guide pulley 14, further realize pulley gear 7 and take place the circumference rotation according to demand self.
Selecting the installation position of the detachable clamping protection rod 17 according to the experiment type (bending, stretching and twisting) and the size (8-20 inches) of the flexible pipe cable, for example, when a rolling resistance-reducing type movable lifting auxiliary device for the experiment of the flexible pipe cable with variable size is placed at the end part of the flexible pipe cable, the function of primarily fixing and clamping the flexible pipe cable needs to be achieved, and at the moment, the detachable clamping protection rod 17 is installed in two vertical rows of circular through holes 10 corresponding to the size of the pipe cable, close to the left edge of the variable-size clamping carriage device 1; when a rolling resistance-reducing type variable-size flexible pipe cable experiment movable lifting auxiliary device is placed at a position outside the end part of a flexible pipe cable, the device needs to play a role in supporting the flexible pipe cable, the influence of the gravity of the flexible pipe cable on an experiment result is avoided, and at the moment, the clamping protection rod 17 can be disassembled to be arranged in two vertical rows of circular through holes 10 at two ends of the clamping carriage device 1.
Should select the quantity that a flexible pipe cable of rolling resistance-reducing type becomes size can move lift auxiliary device according to pipeline length and weight during the experiment to according to the portable position of placing of lift auxiliary device of flexible pipe cable experiment of experiment test demand selection rolling resistance-reducing type becomes size: for example, in a bending experiment, the movable lifting auxiliary devices for the rolling resistance-reducing type variable-size flexible pipe cable experiment are respectively arranged at two end parts and the center of a flexible pipe cable sample; when tensile experiment and twist reverse the experiment, the portable lift auxiliary device of flexible pipe cable experiment that a roll resistance-reducing formula becomes size should place in flexible pipe cable sample below optional position according to flexible pipe cable weight.
In this embodiment, the length and width of the variable-size clamping carriage device 1 and the length and width of the mobile device 3 are the same, the variable-size clamping carriage device 1 fixes the rotating device 2 from the upper part by passing the high-strength bolt 17 through the circular holes 11 and 16, and the mobile device 3 fixes the rotating device 2 from the lower part by passing the high-strength bolt through the circular holes 11 and 16, so that the axes of the variable-size clamping carriage device 1, the rotating device 2 and the mobile device 3 are overlapped.
In this embodiment, the main body of the pulley device 7 is an octagonal connecting device 15, which is designed as an octagon, the pulley device 7 is fixed on the lower surface of the supporting plate 5 through a round hole 12 by a high-strength bolt, 4 guide wheels 14 are assembled on each octagonal connecting device 15, and an included angle is formed between the guide wheels at two sides and fixed on the side of the octagonal connecting device 15, so that the stability of the whole device is enhanced, and the follow-up track movement through the track presetting is facilitated.
In this embodiment, the center of the lower surface of the supporting plate 4 is provided with a cylindrical recess with the same size as the upper surface of the angle display turntable 6, the through-type circular hole 11 is formed in the upper surface of the supporting plate 4 to be aligned with the circular hole 16, so that the high-strength bolt 17 can pass through the circular holes 11 and 16 to fix the rotating device 2 from the upper part, and the center alignment is ensured.
In this embodiment, the center of the upper surface of the bottom supporting plate 5 is provided with a cylindrical recess with the same size as the lower surface of the angle display turntable 6, the through-type circular hole 11 is formed in the lower surface of the supporting plate 5 and aligned with the circular hole 16, so that the high-strength bolt can pass through the circular holes 11 and 16 and can be conveniently fixed on the rotating device 2 from the lower part, and the center alignment is ensured.
In this embodiment, the rotating device 2 is disposed in the cylindrical recesses of the variable-size clamping carriage device 1 and the moving device 2, and the rotating device is pressed vertically by the high-strength bolt to connect and fix the variable-size clamping carriage device 1 and the moving device 3, so as to provide a planar rotation motion for the variable-size clamping carriage device 1.
In this embodiment, 4 upper surface both ends of layer board and apart from wherein one end 1/4 department respectively with layer board 4 major axis symmetry processing six round holes 10, correspond 8 cun, 10 cun, 12 cun, 14 cun, 16 cun, the flexible pipe cable diameter of cun respectively with the round hole 10 of major axis symmetry, will dismantle centre gripping protection stick 17 again and fix into the round hole 10 that corresponds size and position to realize becoming the size and shift according to the experiment type and put the flexible pipe cable effect of centre gripping.
In this embodiment, the angle display turntable 6 is a rotatable turntable, standard lines are made on the lower half part, 0-360 degree angle lines are marked on the circumference of the upper half part, and 1 degree is taken as a unit scale mark, so as to record the change of the angle of the end part of the flexible pipe cable in the experiment process. The height of the upper half part of the rotary table 6 with the angle display is higher than that of the concave part of the lower surface of the supporting plate 4, so that the angle mark line can leak out; the height of the lower half part of the angle display rotary disc 6 is higher than that of the sunken part of the supporting plate 5, so that standard lines can be leaked, angle marking lines on the rotary disc can be conveniently leaked, and the supporting plate 4 can rotate.
In this embodiment, the two ends of the supporting plate 5 are respectively symmetrically processed with the long axis of the supporting plate 5 to form 4 through holes 8, the detachable handle 13 is fixed on the bottom supporting plate 5 through the through holes 8 by high-strength bolts, the detachable handle 13 can be installed before the experiment, and the detachable handle 13 can be removed during the experiment, so that the rolling resistance-reducing type size-variable flexible pipe cable experiment movable lifting auxiliary device can be conveniently moved to a designated position in the experiment.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (7)
1. A rolling resistance-reducing type movable lifting auxiliary device for a flexible pipe cable experiment with variable sizes is suitable for a rigidity performance test for auxiliary test of flexible pipe cables with different sizes in a laboratory, wherein the rigidity comprises stretching, twisting and bending; the device is characterized in that the movable lifting auxiliary device for the flexible pipe cable experiment comprises a variable-size clamping planker device (1), a rotating device (2) and a moving device (3), wherein the rotating device (2) is positioned between the size clamping planker device (1) and the moving device (3); the variable-size clamping carriage device (1), the rotating device (2) and the moving device (3) are split devices, and the axes of the three devices are on the same vertical plane after assembly, so that the same deformation transmitted to the variable-size clamping carriage device (1) and the rotating device (2) through the flexible pipe cable in the experiment process is ensured;
the variable-size clamping carriage device (1) comprises a supporting plate (4), a spherical ball (9), a variable-size circular through hole (10) and a detachable clamping protection rod (17); spherical grooves distributed in a matrix form are processed on the upper surface of the supporting plate (4) and used for mounting spherical balls (9), and the spherical balls (9) are in a semi-embedded design on the upper surface of the supporting plate (4); the surface of the supporting plate (4) is also provided with a circular through hole (10) for installing a detachable clamping protective rod (17), wherein the detachable clamping protective rod (17) is used for installing pipe cables with different sizes; a through hole (11) used for being connected with the rotating device (2) is formed in the center of the supporting plate (4); the movable lifting auxiliary device for the flexible pipe cable experiment can be placed at the lower part of any position of the flexible pipe cable according to the experiment type, and a detachable clamping protective rod (17) is installed in a circular through hole (10) selected according to the size of the flexible pipe cable to play a role in fixing and clamping;
the rotating device (2) is arranged below the variable-size clamping carriage device (1) and comprises a rotary table (6) with an angle display, round holes (16) are formed in the upper surface and the lower surface of the rotary table (6) with the angle display and are used for being connected with the through holes (11) of the variable-size clamping carriage device (1) and the through holes (11) of the moving device (3) through high-strength bolts; recording the rotation plane angle of the flexible pipe cable in real time in the bending stiffness experiment process through a turntable (6) with an angle display;
the moving device (3) is arranged below the rotating device (2) and comprises a bottom supporting plate (5) and a pulley device (7); a through hole (11) used for being connected with the rotating device (2) is formed in the center of the bottom supporting plate (5); through holes (8) are reserved on two sides of the bottom supporting plate (5), and a detachable handle (13) is installed; pulley gear (7) are including octagon connecting device (15), guide pulley (14), and high strength bolted connection is passed through with bottom layer board (5) bottom in octagon connecting device (15) center, and octagon connecting device (15) both sides are equipped with guide pulley (14), and pulley gear (7) self can take place the circumference and rotate.
2. The rolling resistance-reducing type size-variable flexible pipe cable experiment movable lifting auxiliary device according to claim 1, wherein the mounting position of the detachable clamping protection rod (17) is selected according to experiment types and flexible pipe cable sizes, the number of the flexible pipe cable experiment movable lifting auxiliary devices is selected according to the length and weight of a pipeline during an experiment, and the placement position of the flexible pipe cable experiment movable lifting auxiliary device is selected according to the experiment types: when a bending experiment is carried out, the movable lifting auxiliary device for the flexible pipe cable experiment is placed at the end part of a flexible pipe cable sample, and at the moment, the detachable clamping protection rod (17) is installed in two vertical rows of circular through holes (10) with the sizes corresponding to the pipe cables, which are close to one side edge of the variable-size clamping planker device (1); when the flexible pipe cable experiment movable lifting auxiliary device is placed at any position below a flexible pipe cable sample during stretching and twisting experiments, the detachable clamping protection rod (17) is arranged in two vertical rows of circular through holes (10) at two ends of the clamping carriage device (1).
3. The movable lifting auxiliary device for the rolling resistance-reducing type variable-size flexible pipe cable experiment as claimed in claim 1, wherein the length and width of the variable-size clamping planker device (1) and the moving device (3) are consistent.
4. The movable lifting auxiliary device for the rolling resistance-reducing type flexible pipe cable experiment is characterized in that the main body of the pulley device (7) is an octagonal connecting device (15) which is designed in an octagonal manner, and the guide wheels (14) are fixed on two sides of the lower part of the octagonal connecting device (15) to ensure that the guide wheels (14) form an acute angle after being installed.
5. The movable lifting auxiliary device for the rolling resistance reduction type variable-size flexible pipe cable experiment according to claim 1, characterized in that a cylindrical recess with the same size as the upper surface of a turntable (6) with an angle display is machined in the center of the lower surface of a supporting plate (4), a cylindrical recess with the same size as the lower surface of the turntable (6) with an angle display is machined in the center of the upper surface of a bottom supporting plate (5), a rotating device (2) is fixed at the cylindrical recesses of the variable-size clamping carriage device (1) and the moving device (3) through bolts, and plane rotating motion is provided for the variable-size clamping carriage device (1) through the rotating device (2).
6. The movable lifting auxiliary device for the rolling resistance-reducing type variable-size flexible pipe cable experiment as claimed in claim 1, wherein a plurality of circular holes 10 with different sizes are symmetrically processed on two ends of the upper surface of the supporting plate (4) and 1/4 of the positions away from one end of the supporting plate (4) respectively according to the long axis of the supporting plate (4) and correspond to the diameters of the flexible pipe cables with different sizes respectively, the detachable clamping protection rods (17) are fixed into the corresponding circular holes 10 according to the diameter size of a flexible pipe cable sample, and the functions of variable-size and variable-position clamping of the flexible pipe cable are realized according to the experiment type.
7. The movable lifting auxiliary device for the rolling resistance-reducing type variable-size flexible pipe cable experiment is characterized in that the rotary table (6) with the angle display function is a rotatable rotary table, a 0-degree standard line at an initial position is manufactured at the lower half part, 0-360-degree angle lines are manufactured around the upper half part, and 1-degree unit scale lines are used for recording the angle change of the end part of the flexible pipe cable in the experiment process; the height of the upper half part of the turntable (6) with the angle display is higher than that of the sunken part of the lower surface of the supporting plate (4), and an angle marking line leaks out; the lower half part of the angle display turntable (6) is higher than the height of the sunken part of the supporting plate (5), and standard lines leak.
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