Pipe stress testing device and testing method thereof

Abstract

The invention discloses a pipe stress testing device and a testing method thereof, and belongs to the field of pipe impact force testing. The pipe stress testing device comprises a supporting base and a processing pipe; the impact part is connected with the supporting side plate through a supporting part so as to carry out an impact test on the processed pipe; the impact part comprises a bearing shaft; the driving piece is arranged on the supporting piece and connected with the impact piece so as to drive the impact piece to move up and down for impact; the multiple sets of balance weight pieces are arranged, and the multiple sets of balance weight pieces are sequentially arranged on the bearing shaft in a sleeving mode so as to increase the weight of the impact piece; a counterweight adjusting member; and the adjusting part is connected with the supporting part and the impact part so as to adjust different configurations for impact. The device is provided with the impact part, the counterweight part and the counterweight adjusting part, when the impact part is used for testing the pressure of the pipe, the counterweight part is increased or decreased by driving the counterweight adjusting part, so that the impact part has different impact forces, and a contrast experiment is formed.

Description

Technical Field

[0001] The invention relates to a pipe impact force test; in particular, to a pipe force testing device and a testing method thereof. Background Art

[0002] Pipes are materials used to make pipe fittings. Different pipe fittings require different pipes, and the quality of the pipes directly determines the quality of the pipe fittings. In order to ensure that the pipes can still be used normally in harsh environments, the quality of the pipes needs to be strictly tested before leaving the factory, and pipe strength testing is the most important part of pipe quality control. Since pipes are often affected by external and internal pressures when transporting fluids or bearing external loads, testing the force-bearing capacity of pipes from multiple aspects is crucial to ensure the safety and stability of pipes.

[0003] The impact resistance test of pipes is one of the technical indicators that must be tested before pipes leave the factory. In the existing technology, in the impact resistance test of pipes, the impact strength can generally only be changed by impacting with multiple impact blocks of different weights. The test function is relatively simple, and it is troublesome to replace impact blocks of different weights. At the same time, it is impossible to make adaptive adjustments according to the use scenarios and impact resistance requirements of the pipes, and the test results are not comprehensive enough.

[0004] In view of this, in order to address the above-mentioned deficiencies, the present invention has improved and optimized the impact force in the prior art, and developed a pipe force testing device and a testing method thereof. Summary of the invention

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A pipe stress testing device, comprising: a support base and a processed pipe; and further comprising:

[0007] Support side plates, arranged at both ends of the support base;

[0008] Clamping members, which are provided in two groups, and the two groups of clamping members are sequentially arranged on the supporting base to clamp the processed pipe;

[0009] A second adjusting member is disposed on the supporting base and connected to the supporting side plate and the clamping member to change the position of the processed pipe;

[0010] An impact member is connected to the supporting side plate via a supporting member to perform an impact test on the processed pipe; the impact member includes: a load-bearing shaft;

[0011] A driving member, disposed on the supporting member and connected to the impact member, so as to drive the impact member to move up and down for impact;

[0012] A plurality of weight balancing members are provided, and the plurality of weight balancing members are sequentially sleeved on the load-bearing shaft to increase the weight of the impact member;

[0013] A counterweight adjustment member is connected to the support member and the impact member to adjust different configurations for impact; the counterweight adjustment member includes:

[0014] The second cylinders are provided in four groups, and the four groups of the second cylinders are evenly arranged on the support member;

[0015] A fixed ring, arranged on the output shaft of the second cylinder;

[0016] A first annular groove is provided at the top of the fixed ring;

[0017] A large gear, the bottom end of which slides in the first annular groove;

[0018] A second square through hole is provided at the center of the large gear and cooperates with the counterweight and the support.

[0019] Furthermore, the support member comprises:

[0020] A mountain-shaped support plate, arranged on the support side plate;

[0021] A second side plate, one end of which is connected to an end of the mountain-shaped support plate away from the support side plate;

[0022] A third limiting side plate, one end of which is connected to the middle of the mountain-shaped support plate;

[0023] A reinforcing rib, one end of which is connected to the second side plate, and the other end of which is connected to the mountain-shaped support plate;

[0024] A top plate, the bottom end of which is connected to the second side plate and the third limiting side plate;

[0025] A first square through hole is provided at the center of the top plate and cooperates with the counterweight.

[0026] Furthermore, the impact member comprises:

[0027] A first sliding groove is provided on the third limiting side plate;

[0028] A connecting plate, both ends of which slide in the first sliding groove, and a top end of which is connected to the load-bearing shaft;

[0029] An impact block, the top end of which is connected to the bottom end of the connecting plate, and the bottom end of the impact block cooperates with the processed pipe for impact;

[0030] A disc is placed and sleeved on the load-bearing shaft to place the counterweight.

[0031] Furthermore, the driving member comprises:

[0032] A first connecting block, disposed at the bottom end of the top plate;

[0033] A connecting rope, one end of which is fixedly connected to the first connecting block;

[0034] A connecting ear is provided on the connecting plate, and the connecting rope passes through the connecting ear;

[0035] A steering member, disposed on the top plate and cooperating with the connecting rope to change the direction of the connecting rope;

[0036] A support block, disposed on the top plate;

[0037] A rotating shaft, rotatably connected to the support block, and the rotating shaft is fixedly connected to the other end of the connecting rope;

[0038] A second motor is disposed on the top plate, and an output end of the second motor is connected to the rotating shaft;

[0039] The control module is used to be electrically connected to the second motor and adjust the speed of the second motor, wherein the specific adjustment includes the following steps:

[0040] The initial parameters of the second motor are set to determine the target position of the impact member; the current position of the impact member is collected in real time by a position sensor; the collected data is preprocessed; the current position of the impact member is compared with the target position to calculate the position error; and a control output signal is calculated according to the position error;

[0041] The output signal is converted into a control command for the second motor; according to the control command, the second motor is driven to operate, thereby controlling the position of the impact piece; during the control process, the real-time position of the impact piece is continuously collected and fed back to the control module to achieve closed-loop control; it is determined whether the impact piece has reached the target position, and if the end condition is met, the second motor is stopped and the control process is ended.

[0042] Furthermore, the steering member comprises:

[0043] A first pulley is arranged at the bottom end of the top plate and is closely connected to the connecting rope;

[0044] The second pulley is arranged at the top of the top plate, and the connecting rope passes through the top plate and is closely connected with the second pulley.

[0045] Furthermore, the counterweight comprises:

[0046] A square counterweight block is sleeved on the load-bearing shaft and matched with the first square through hole and the second square through hole;

[0047] An annular counterweight block connected to the bottom end of the square counterweight block;

[0048] A second annular groove is provided at the top of the square counterweight block;

[0049] The limiting ring block is arranged at the bottom end of the annular counterweight block and is engaged with the second annular groove on another group of counterweight components.

[0050] Furthermore, the counterweight adjustment member further includes:

[0051] A placement plate connected to the fixing ring;

[0052] A first motor is arranged on the placement plate;

[0053] The second gear is meshed with the large gear and connected to the output end of the first motor.

[0054] Furthermore, the clamping member comprises:

[0055] A sliding block is arranged on the supporting base;

[0056] A first supporting plate, disposed on the sliding block;

[0057] An arc-shaped clamp is arranged on the first supporting plate to facilitate clamping the processed pipe.

[0058] Furthermore, the second adjusting member comprises:

[0059] A slide rail, disposed on the support base, and the slide block slides along the slide rail;

[0060] A first cylinder, disposed on the supporting side plate, and an output end of the first cylinder is connected to the sliding block;

[0061] A limiting rod, both ends of which are connected to the supporting side plates and are slidably connected to the sliding block to limit the position of the sliding block;

[0062] A connecting window is provided on the supporting side plate to cooperate with the processing pipe to move left and right and impact different positions.

[0063] The present invention also provides a testing method applicable to the above-mentioned pipe stress testing device, comprising the following steps:

[0064] S1. Determine the processing position: adjust the position of the arc clamp and place the processed pipe on the arc clamp;

[0065] S2, select the impact strength: start the second cylinder to drive the fixed ring to move upward, thereby driving the large gear to move upward through the first annular groove, and when the large gear moves to the position of the designated counterweight, the second square through hole in the large gear at this position corresponds to the position of the annular counterweight of the designated counterweight; at this time, start the first motor to drive the second gear to rotate, thereby driving the large gear to rotate; after rotating 90 degrees, stop rotating, at this time, the large gear fits with the bottom end of the square counterweight on the designated configuration part, thereby supporting the counterweight, and the counterweights under the designated counterweight are placed on the placement disc, and the impact test is carried out together with the load-bearing shaft;

[0066] S3, adjustment and reset: by starting the second motor, the second motor drives the rotating shaft to rotate. Since the rotating shaft is fixedly connected to one end of the connecting rope, when the rotating shaft rotates, it drives the connecting rope wrapped around the rotating shaft to rotate, thereby pulling the other end of the connecting rope. Since the middle of the connecting rope passes through the connecting ear, the connecting rope passes through the second pulley, then passes through the top plate, and then passes through the first pulley, and finally drives the connecting ear to move upward, thereby driving the connecting plate to move upward;

[0067] S4. Repeated impact: The processed pipes are subjected to stamping tests using impact pieces of different weights to test their anti-stamping capabilities.

[0068] Compared with the prior art, the beneficial effects of the present invention are: by providing a clamping member to clamp the processed pipe, and providing a second adjusting member to change the position of the clamping member, thereby changing the position of the processed pipe, so that the device can perform impact tests on different positions of the processed pipe; an impact member, a counterweight member and a counterweight adjusting member are provided, and when the impact member is testing the pipe pressure, the counterweight adjusting member is driven to increase or decrease the counterweight member, so that the impact member has different impact forces, thereby forming a comparative experiment. A driving member is provided to drive the impact member to move, and the driving member can make the impact member always keep the same impact height and move downward, thereby controlling the experimental variables and making the test experiment better controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0070] Figure 1 is a first stereogram of the present invention;

[0071] Figure 2 is a second stereogram of the present invention;

[0072] Figure 3 It is a first partial stereogram of the present invention;

[0073] Figure 4 It is a second partial stereogram of the present invention;

[0074] Figure 5 is a first cross-sectional view of the present invention;

[0075] Figure 6 for Figure 1 A in the enlarged view;

[0076] Figure 7 A three-dimensional diagram of a counterweight adjusting member and a counterweight member in the present invention;

[0077] Figure 8 It is a partial exploded view of the counterweight adjustment member in the present invention;

[0078] Fig. 9 It is a first partial exploded view of the counterweight member in the present invention;

[0079] Fig.10 is a second partial exploded view of the counterweight member in the present invention;

[0080] Fig.11 It is a three-dimensional diagram of the clamping member in the present invention.

[0081] Description of the numbers in the figure:

[0082] 1. Support base; 101. Support side plate; 102. Connecting window; 2. Clamping member; 201. First cylinder; 202. Slide rail; 203. Limit rod; 204. Sliding block; 205. First support plate; 206. Arc clamp; 3. Support member; 301. Mountain support plate; 302. Second side plate; 303. Reinforcement rib; 304. Third limit side plate; 305. Top plate; 306. First square through hole; 4. Counterweight adjustment member; 401. Second cylinder; 402. Fixed ring; 403. First annular groove; 404. Large gear; 405. Second square through hole ; 406, second gear; 407, placement plate; 408, first motor; 5, impact piece; 501, impact block; 502, connecting plate; 503, load-bearing shaft; 504, placement disc; 505, first slide groove; 6, processing pipe; 701, connecting ear; 702, first connecting block; 703, connecting rope; 704, first pulley; 705, second pulley; 706, support block; 707, rotating shaft; 708, second motor; 8, counterweight; 801, square counterweight; 802, second annular groove; 803, annular counterweight; 804, limiting ring block. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0084] like Figure 1 to Figure 2 As shown, a pipe force testing device includes: a support base 1 and a processed pipe 6; further includes: a support side plate 101, which is arranged at both ends of the support base 1; a clamping member 2, which is provided with two groups, and the two groups of clamping members 2 are sequentially arranged on the support base 1 to clamp the processed pipe 6; a second adjusting member is arranged on the support base 1 and connected to the support side plate 101 and the clamping member 2 to change the position of the processed pipe 6; an impact member 5, which is connected to the support side plate 101 through a support member 3 to perform an impact test on the processed pipe 6; the impact member 5 includes: a load-bearing shaft 503; a driving member, which is arranged on the support member 3 and connected to the impact member 5 to drive the impact member 5 to move up and down for impact; a counterweight 8, there are several groups, and several groups of counterweights 8 are sequentially sleeved on the load-bearing shaft 503 to increase the weight of the impact member 5; a counterweight adjustment member 4 is connected to the support member 3 and the impact member 5 to adjust different configurations for impact; the counterweight adjustment member 4 includes: a second cylinder 401, there are four groups, and the four groups of the second cylinders 401 are evenly arranged on the support member 3; a fixed ring 402 is arranged on the output shaft of the second cylinder 401; a first annular groove 403 is opened at the top of the fixed ring 402; a large gear 404, the bottom end of which slides in the first annular groove 403; a second square through hole 405 is opened at the center of the large gear 404, cooperating with the counterweight 8 and the support member 3.

[0085] In the embodiment of the present invention, a clamping member 2 is provided to clamp the processed pipe 6, and a second adjusting member is provided to change the position of the clamping member 2, thereby changing the position of the processed pipe 6, so that the device can perform impact tests on different positions of the processed pipe 6; an impact member 5, a counterweight member 8 and a counterweight adjusting member 4 are provided, and when the impact member 5 is testing the pipe pressure, the counterweight adjusting member 4 is driven to increase or decrease the counterweight member 8, so that the impact member 5 has different impact forces, thereby forming a comparative experiment. A driving member is provided to drive the impact member 5 to move, and the driving member can make the impact member 5 always keep the same impact height and move downward, thereby controlling the experimental variables and making the test experiment better controlled.

[0086] like Figures 2 to 3As shown, the support member 3 includes: a mountain-shaped support plate 301, which is arranged on the support side plate 101; a second side plate 302, one end of which is connected to the end of the mountain-shaped support plate 301 away from the support side plate 101; a third limiting side plate 304, one end of which is connected to the middle of the mountain-shaped support plate 301; a reinforcing rib 303, one end of which is connected to the second side plate 302, and the other end is connected to the mountain-shaped support plate 301; a top plate 305, the bottom end of which is connected to the second side plate 302 and the third limiting side plate 304; a first square through hole 306, which is opened at the center of the top plate 305 and cooperates with the counterweight 8.

[0087] like Figures 4 to 7 As shown, the impact member 5 includes: a first slide groove 505, which is opened on the third limiting side plate 304; a connecting plate 502, both ends of which slide in the first slide groove 505, and the top of the connecting plate 502 is connected to the load-bearing shaft 503; an impact block 501, the top of which is connected to the bottom of the connecting plate 502, and the bottom of the impact block 501 cooperates with the processed pipe 6 for impact; a placing disc 504, which is sleeved on the load-bearing shaft 503 to place the counterweight 8.

[0088] In the embodiment of the present invention, the connecting plate 502 is pulled to the bottom of the top plate 305 by the driving member, and then released freely, so that the connecting plate 502 slides downward along the first slide groove 505, thereby driving the impact block 501 to move downward, and finally impacting the processed pipe 6 to complete the pressure test; the connecting plate 502 simultaneously drives the bearing shaft 503 and the placement disc 504 to move downward, and the weight of the entire impact member 5 plus the bearing member placed on the placement disc 504 is the weight, so that different pressure tests can be achieved by adjusting different bearing members;

[0089] The mountain-shaped support plate 301, the second side plate 302 and the reinforcing ribs 303 are arranged to cooperate with each other, so that the structure is more stable.

[0090] like Figures 4 to 7 As shown, the driving member includes: a first connecting block 702, which is arranged at the bottom end of the top plate 305; a connecting rope 703, one end of which is fixedly connected to the first connecting block 702; a connecting ear 701, which is arranged on the connecting plate 502, and the connecting rope 703 passes through the connecting ear 701; a steering member, which is arranged on the top plate 305 and cooperates with the connecting rope 703 to change the direction of the connecting rope 703; a supporting block 706, which is arranged on the top plate 305; a rotating shaft 707, which is rotatably connected to the supporting block 706, and the rotating shaft 707 is fixedly connected to the other end of the connecting rope 703; a second motor 708, which is arranged on the top plate 305, and the output end of the second motor 708 is connected to the rotating shaft 707.

[0091] like Figures 4 to 7 As shown, the steering member includes: a first pulley 704, which is arranged at the bottom end of the top plate 305 and is closely connected to the connecting rope 703; a second pulley 705, which is arranged at the top end of the top plate 305, and the connecting rope 703 passes through the top plate 305 and is closely connected to the second pulley 705.

[0092] In the embodiment of the present invention, the second motor 708 is started to drive the rotating shaft 707 to rotate. Since the rotating shaft 707 is fixedly connected to one end of the connecting rope 703, when the rotating shaft 707 rotates, it will drive the connecting rope 703 to wrap around the rotating shaft 707 to rotate, thereby pulling the other end of the connecting rope 703. Since the connecting rope 703 passes through the connecting ear 701 in the middle, the connecting rope 703 passes through the second pulley 705, then passes through the top plate 305, and then passes through the first pulley 704, and finally drives the connecting ear 701 to move upward, thereby driving the connecting plate 502 to move upward. When it moves to the uppermost end, the second motor 708 is turned off, so that the connecting plate 502 slides downward by its own gravity, thereby driving the connecting rope 703 to move in the opposite direction, and driving the rotating shaft 707 to move in the opposite direction, thereby laying the foundation for the next time the second motor 708 drives the connecting rope 703 to be stretched.

[0093] Two connecting ropes 703 are provided to act on the two ends of the connecting plate 502 respectively, so as to ensure the stability of the movement of the connecting plate 502; a first pulley 704 and a second pulley 705 are provided, so that the direction of the connecting rope 703 is changed without affecting the movement force of the connecting rope 703, so as to be used in conjunction with the second motor 708; by providing the connecting rope 703, the connecting plate 502 is pulled and moved, so that the force on the connecting plate 502 is more balanced, and at the same time, when there is no pulling force of the connecting rope 703, the connecting plate 502 will fall freely without being affected by the weight of the connecting rope 703, so as to facilitate the staff to analyze the experimental results.

[0094] A regulating module is provided, which is used to be electrically connected to the second motor 708 and to regulate the speed of the second motor 708, wherein the specific regulation includes the following steps:

[0095] The initial parameters of the second motor 708 are set to determine the target position of the impact member 5; the current position of the impact member 5 is collected in real time by the position sensor; the collected data is preprocessed; the current position of the impact member 5 is compared with the target position to calculate the position error; the control output signal is calculated according to the position error, wherein the calculation formula of the control output signal is: ;

[0096] in, Indicates the control output signal, which is the time A function for driving a second motor (708) to adjust the position of the impact member (5); represents the position error, i.e. the difference between the current position of the impact member (5) and the target position; represents proportional gain; Represents the nonlinear adjustment coefficient of the proportional term; represents the integral gain; Represents the nonlinear adjustment coefficient of the integral term; represents the integral of the position error, which represents the accumulation of position error from 0 to the current time t; represents the differential gain; Represents the nonlinear adjustment coefficient of the differential term; represents the derivative of the position error, that is, the rate of change of the position error over time; Represents the second derivative of the position error, that is, the rate of change of the rate of change of the position error;

[0097] The output signal is converted into a control command of the second motor 708; according to the control command, the second motor 708 is driven to operate, thereby controlling the position of the impact member 5; during the control process, the real-time position of the impact member 5 is continuously collected and fed back to the control module to achieve closed-loop control; it is determined whether the impact member 5 has reached the target position, and if the end condition is met, the second motor 708 is stopped and the control process is ended.

[0098] like Figures 8 to 11 As shown, the counterweight 8 includes: a square counterweight block 801, which is sleeved on the load-bearing shaft 503 and cooperates with the first square through hole 306 and the second square through hole 405; an annular counterweight block 803, which is connected to the bottom end of the square counterweight block 801; a second annular groove 802, which is opened at the top of the square counterweight block 801; a limiting ring block 804, which is arranged at the bottom end of the annular counterweight block 803, and cooperates with the second annular groove 802 on another group of counterweights 8.

[0099] In an embodiment of the present invention, a plurality of counterweight members 8 are provided and sleeved on the load-bearing shaft 503, and the plurality of counterweight members 8 are connected by the limiting ring block 804 of the previous counterweight member 8 and the second annular groove 802 of the next counterweight member 8, so as to avoid the problem of unstable tipping after the counterweight member 8 is separated from the load-bearing shaft 503.

[0100] like Figures 8 to 11 As shown, the counterweight adjustment member 4 also includes: a placement plate 407 connected to the fixed ring 402; a first motor 408, disposed on the placement plate 407; a second gear 406, meshingly connected to the large gear 404, and connected to the output end of the first motor 408.

[0101] In the embodiment of the present invention, a first square through hole 306 is provided on the top plate 305 so that the square counterweight block 801 in the counterweight piece 8 can pass through the first square through hole 306; when the weight of the impact piece 5 needs to be increased, the second cylinder 401 is started to drive the fixed ring 402 to move upward, thereby driving the large gear 404 to move upward through the first annular groove 403, and the large gear 404 moves to the position of the designated counterweight piece 8, where the second square through hole 405 in the large gear 404 corresponds to the position of the annular counterweight block 803 of the designated counterweight piece 8; at this time, the first motor 408 is started to drive the second gear 406 to rotate, thereby driving the large gear 404 to rotate, and the rotation stops after rotating 90 degrees. At this time, the large gear 404 is in contact with the bottom end of the square counterweight block 801 on the designated configuration piece, thereby supporting the counterweight piece 8, and those counterweight pieces 8 below the designated counterweight piece 8 are placed on the placement disc 504, and the impact test is performed together with the load-bearing shaft 503.

[0102] By changing the extension of the second cylinder 401, different weights are changed to complete a comprehensive test of the processed pipe 6. When changing different weights, the position of the impact block 501 remains unchanged, so that during impact, the impact height is fixed, and only the mass is different, which makes it convenient for personnel to analyze the test experimental data.

[0103] like Figures 8 to 11 As shown, the clamping member 2 includes: a sliding block 204, which is arranged on the supporting base 1; a first supporting plate 205, which is arranged on the sliding block 204; and an arc clamp 206, which is arranged on the first supporting plate 205 to facilitate clamping the processed pipe 6.

[0104] like Figures 8 to 11 As shown, the second adjusting member includes: a slide rail 202, which is arranged on the support base 1, and the sliding block 204 slides along the slide rail 202; a first cylinder 201, which is arranged on the support side plate 101, and the output end of the first cylinder 201 is connected to the sliding block 204; a limit rod 203, both ends of which are connected to the support side plate 101, and are slidably connected to the sliding block 204 to limit the position of the sliding block 204; a connecting window 102, which is opened on the support side plate 101 to cooperate with the processing pipe 6 to move left and right and impact different positions.

[0105] In the embodiment of the present invention, the processed pipe 6 is placed on the arc clamp 206, so that the impact test can be directly performed; when the impact position needs to be changed, the first cylinder 201 needs to be started to drive the sliding block 204 to slide along the slide rail 202, thereby driving the first support plate 205 to move, and finally driving the arc clamp 206 to move; the first cylinders 201 on both sides are started in the opposite direction, so that the two arc clamps 206 can be driven to move to one side, thereby driving the processed pipe 6 to move to one side, so that the impact test can also be performed on both ends of the processed pipe 6; when testing pipes of different lengths, by moving the first cylinders 201 on both sides in the same direction, the position between the two arc clamps 206 is simultaneously moved close to or away from each other, so as to adapt to the processing pipes 6 of different lengths;

[0106] A connection window 102 is provided on the supporting side plate 101 , so that the processing pipe 6 can pass through the connection window 102 , thereby improving the adaptability to different processing pipes 6 .

[0107] Working principle: Start the first cylinder 201 to drive the sliding block 204 to slide along the slide rail 202, thereby driving the first support plate 205 to move, and finally driving the arc clamp 206 to move; make the distance between the two arc clamps 206 match the processed pipe 6 to be tested; then place the processed pipe 6 on the arc clamp 206; start the second motor 708 to drive the rotating shaft 707 to rotate. Since the rotating shaft 707 is fixedly connected to one end of the connecting rope 703, when the rotating shaft 707 rotates, it will drive the connecting rope 703 to wrap around the rotating shaft 707 to rotate, thereby pulling the connecting rope 703 to pull ... At the other end of the rope 703, since the connecting rope 703 passes through the connecting ear 701 in the middle, the connecting rope 703 passes through the second pulley 705, then passes through the top plate 305, and then the first pulley 704, and finally drives the connecting ear 701 to move upward, thereby driving the connecting plate 502 to move upward; when it moves to the uppermost end, the second motor 708 is turned off, so that the connecting plate 502 is not restricted by the connecting rope 703 and slides downward along the first slide groove 505, thereby driving the impact block 501 to move downward, and the connecting plate 502 simultaneously drives the bearing shaft 503 and the placement disc 504 to move downward, and at the same time, the placement disc The load-bearing member placed on the disc 504 constitutes the weight of the entire impact member 5; it finally impacts the processed pipe 6 to complete the pressure test; in order to change different weights to conduct a more accurate test experiment; when the impact block 501 is at the uppermost end, the fixed ring 402 is driven to move upward by starting the second cylinder 401, thereby driving the large gear 404 to move upward through the first annular groove 403, and the large gear 404 moves to the position of the designated counterweight 8, and the second square through hole 405 in the large gear 404 at this position corresponds to the position of the annular counterweight block 803 of the designated counterweight 8; At this time, the first motor 408 is started to drive the second gear 406 to rotate, thereby driving the large gear 404 to rotate, and then stop rotating after rotating 90 degrees. At this time, the large gear 404 is in contact with the bottom end of the square counterweight block 801 on the designated configuration part, thereby supporting the counterweight 8, and those counterweights 8 under the designated counterweight 8 are placed on the placement disc 504 and impact tested together with the load-bearing shaft 503; thereby changing the weight of the impact test; at the same time, the position of the impact block 501 from the processed pipe 6 is not increased or decreased, so that the variables of the test experiment are better controlled.

[0108] When it is necessary to perform pipe impact tests at different positions on the same processed pipe 6, the first cylinder 201 is started to drive the sliding block 204 to slide along the slide rail 202, thereby driving the first support plate 205 to move, and finally driving the arc clamp 206 to move; the first cylinders 201 on both sides are started in the opposite direction, which can drive the two arc clamps 206 to move to one side, thereby driving the processed pipe 6 to move to one side, so that impact tests can also be performed on both ends of the processed pipe 6.

[0109] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipe stress testing device, comprising: A support base (1) and a processed pipe (6); characterized in that it also comprises: Support side plates (101) are arranged at both ends of the support base (1); The clamping members (2) are provided in two groups, and the two groups of the clamping members (2) are arranged on the supporting base (1) in sequence to clamp the processed pipe (6); A second adjusting member, disposed on the supporting base (1) and connected to the supporting side plate (101) and the clamping member (2), so as to change the position of the processed pipe (6); An impact member (5) is connected to the supporting side plate (101) via a supporting member (3) to perform an impact test on the processed pipe (6); the impact member (5) comprises: a load-bearing shaft (503); A driving member, disposed on the support member (3) and connected to the impact member (5) to drive the impact member (5) to move up and down to impact; A plurality of groups of counterweight members (8) are provided, and the plurality of groups of counterweight members (8) are sequentially sleeved on the load-bearing shaft (503) to increase the weight of the impact member (5); The counterweight adjustment member (4) is connected to the support member (3) and the impact member (5) to adjust different configurations for impact; the counterweight adjustment member (4) comprises: The second cylinders (401) are provided in four groups, and the four groups of the second cylinders (401) are evenly arranged on the circumference of the support member (3); A fixed ring (402) is arranged on the output shaft of the second cylinder (401); A first annular groove (403) is formed at the top of the fixing ring (402); A large gear (404), the bottom end of which slides in the first annular groove (403); The second square through hole (405) is provided at the center of the large gear (404) and cooperates with the counterweight (8) and the support (3).

2. A pipe stress testing device according to claim 1, characterized in that: The support member (3) comprises: A mountain-shaped support plate (301) is arranged on the supporting side plate (101); A second side plate (302), one end of which is connected to an end of the mountain-shaped support plate (301) away from the support side plate (101); A third limiting side plate (304), one end of which is connected to the middle of the mountain-shaped support plate (301); A reinforcing rib (303), one end of which is connected to the second side plate (302), and the other end of which is connected to the mountain-shaped support plate (301); A top plate (305), the bottom end of which is connected to the second side plate (302) and the third limiting side plate (304); A first square through hole (306) is provided at the center of the top plate (305) and cooperates with the counterweight (8).

3. A pipe stress testing device according to claim 2, characterized in that: The impact member (5) comprises: A first sliding groove (505) is provided on the third limiting side plate (304); A connecting plate (502), wherein both ends of the connecting plate (502) slide in the first sliding groove (505), and the top end of the connecting plate (502) is connected to the load-bearing shaft (503); An impact block (501), the top end of which is connected to the bottom end of the connecting plate (502), and the bottom end of the impact block (501) cooperates with the processing pipe (6) for impact; A disc (504) is placed and sleeved on the load-bearing shaft (503) to place the counterweight (8).

4. A pipe stress testing device according to claim 3, characterized in that: The driving member comprises: A first connecting block (702) is arranged at the bottom end of the top plate (305); A connecting rope (703), one end of which is fixedly connected to the first connecting block (702); A connecting ear (701) is arranged on the connecting plate (502), and the connecting rope (703) passes through the connecting ear (701); a steering member, disposed on the top plate (305) and cooperating with the connecting rope (703) to change the direction of the connecting rope (703); A support block (706) is disposed on the top plate (305); A rotating shaft (707) is rotatably connected to the support block (706), and the rotating shaft (707) is fixedly connected to the other end of the connecting rope (703); A second motor (708) is disposed on the top plate (305), and an output end of the second motor (708) is connected to the rotating shaft (707); The control module is used to be electrically connected to the second motor (708) and to adjust the rotation speed of the second motor (708), wherein the specific adjustment comprises the following steps: Setting initial parameters of the second motor (708) to determine the target position of the impact member (5); collecting the current position of the impact member (5) in real time through a position sensor; pre-processing the collected data; comparing the current position of the impact member (5) with the target position to calculate the position error; and calculating a control output signal based on the position error; The output signal is converted into a control command for the second motor (708); the second motor (708) is driven to operate according to the control command, thereby controlling the position of the impact member (5); the real-time position of the impact member (5) is continuously collected during the control process, and fed back to the control module to achieve closed-loop control; it is determined whether the impact member (5) has reached the target position, and if the end condition is met, the second motor (708) is stopped and the control process is ended.

5. A pipe stress testing device according to claim 4, characterized in that: The steering member comprises: A first pulley (704) is disposed at the bottom end of the top plate (305) and is closely connected to the connecting rope (703); The second pulley (705) is arranged at the top of the top plate (305), and the connecting rope (703) passes through the top plate (305) and is closely connected to the second pulley (705).

6. A pipe stress testing device according to claim 5, characterized in that: The counterweight (8) comprises: A square counterweight block (801) is sleeved on the load-bearing shaft (503) and cooperates with the first square through hole (306) and the second square through hole (405); An annular counterweight block (803) connected to the bottom end of the square counterweight block (801); A second annular groove (802) is provided at the top of the square counterweight block (801); The limiting ring block (804) is arranged at the bottom end of the annular counterweight block (803) and is engaged with the second annular groove (802) on the other set of counterweight members (8).

7. A pipe stress testing device according to claim 6, characterized in that: The counterweight adjustment member (4) further comprises: A placement plate (407) connected to the fixing ring (402); A first motor (408) is disposed on the placement plate (407); The second gear (406) is meshedly connected to the large gear (404) and is connected to the output end of the first motor (408).

8. A pipe stress testing device according to claim 7, characterized in that: The clamping member (2) comprises: A sliding block (204) is arranged on the supporting base (1); A first supporting plate (205) is arranged on the sliding block (204); An arc-shaped clamp (206) is arranged on the first support plate (205) to facilitate clamping of the processed pipe (6).

9. A pipe stress testing device according to claim 8, characterized in that: The second adjusting member comprises: A slide rail (202) is arranged on the support base (1), and the slide block (204) slides along the slide rail (202); A first cylinder (201) is arranged on the supporting side plate (101), and an output end of the first cylinder (201) is connected to the sliding block (204); A limiting rod (203), both ends of which are connected to the supporting side plate (101) and are slidably connected to the sliding block (204) to limit the position of the sliding block (204); A connecting window (102) is provided on the supporting side plate (101) to cooperate with the processing pipe (6) to move left and right and impact different positions.

10. A testing method applicable to the pipe stress testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Determine the processing position: adjust the position of the arc clamp (206) and place the processed pipe (6) on the arc clamp (206); S2, selecting the impact strength: by starting the second cylinder (401) to drive the fixed ring (402) to move upward, thereby driving the large gear (404) to move upward through the first annular groove (403), when the large gear (404) moves to the position of the designated counterweight (8), the second square through hole (405) in the large gear (404) corresponds to the position of the annular counterweight block (803) of the designated counterweight (8); at this time, starting the first motor (408) to drive the second gear (406) to rotate, thereby driving the large gear (404) to rotate; after rotating 90 degrees, the rotation stops, at which time the large gear (404) fits with the bottom end of the square counterweight block (801) on the designated configuration part, thereby supporting the counterweight (8), and the counterweights (8) below the designated counterweight (8) are placed on the placement disk (504) and subjected to impact test together with the load-bearing shaft (503); S3, adjustment and reset: by starting the second motor (708), the second motor (708) drives the rotating shaft (707) to rotate. Since the rotating shaft (707) is fixedly connected to one end of the connecting rope (703), when the rotating shaft (707) rotates, it drives the connecting rope (703) wrapped around the rotating shaft (707) to rotate, thereby pulling the other end of the connecting rope (703). Since the connecting rope (703) passes through the connecting ear (701), the connecting rope (703) passes through the second pulley (705), then passes through the top plate (305), and then passes through the first pulley (704), and finally drives the connecting ear (701) to move upward, thereby driving the connecting plate (502) to move upward; S4. Repeated impact: The punching test is performed on the processed pipe (6) by using impact pieces (5) of different weights to test the punching resistance of the processed pipe.

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