Forging tension test equipment

Abstract

The invention belongs to the technical field of detection equipment, particularly relates to forge piece tension test equipment, and provides the following scheme for solving the problems that the tension test of a forge piece is poor in visibility and cannot be visually displayed: the forge piece tension test equipment comprises a bottom table, the upper side of the bottom table is fixedly connected with two symmetrical stand columns, and the upper ends of the two stand columns are fixedly connected with the same top table; a movable table is arranged between the bottom table and the top table, mounting tables are arranged above the movable table and below the top table, the two mounting tables are symmetrically distributed up and down, square seats are arranged on the two mounting tables, and clamping assemblies are arranged on the two mounting tables. When the forge piece tension test equipment disclosed by the invention is used for performing a tension test on the forge piece, the deformation quantity feedback assembly can be used for directly feeding back deformation quantity data of the forge piece under different tension forces, and the deformation quantity data is visually displayed in a liquid column change manner, so that the situation that the deformation quantity of the metal forge piece is not obvious and cannot be observed is avoided; and the visibility of test data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to a forging tensile test equipment. Background Art

[0002] Forgings refer to workpieces or blanks obtained by forging and deforming metal billets. The common method is to apply pressure to the metal billet to cause it to deform plastically and change its mechanical properties. Forging can eliminate the looseness and holes in the metal and improve the mechanical properties of the forging. Forgings can be divided into cold forging and hot forging according to the temperature of the billet during processing. Cold forging is generally processed at room temperature, and hot forging is processed at a temperature higher than the recrystallization temperature of the metal billet.

[0003] Tensile test, also known as stretch test, refers to a test method for measuring material properties under axial tensile load. The data obtained from the tensile test can be used to determine the material's elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators.

[0004] When metal forgings are subjected to tensile testing, the deformation is difficult to observe with the naked eye due to the non-deformability of some metals, and can only be fed back numerically by a computer. Therefore, the tensile test of forgings has poor visibility and cannot be displayed intuitively. Summary of the invention

[0005] The invention discloses a forging tensile test device, aiming to solve the technical problem that the tensile test of forgings in the background technology has poor visibility and cannot be displayed intuitively.

[0006] A forging tensile testing device proposed in the present invention comprises a base platform, wherein two symmetrical columns are fixedly connected to the upper side of the base platform, the upper ends of the two columns are fixedly connected to the same top platform, and a movable platform is arranged between the base platform and the top platform, and mounting platforms are arranged above the movable platform and below the top platform, the two mounting platforms are symmetrically distributed up and down, square seats are arranged on the two mounting platforms, clamping components are arranged on the two mounting platforms, and a deformation variable feedback component is arranged on the side of the movable platform, the deformation variable feedback component comprises two side attachment frames, an air box and a U-shaped liquid pipe, the two side attachment frames are symmetrically distributed on both sides of the air box, the two side attachment frames are fixedly connected to the air box, a U-shaped mounting hole is opened inside the base platform, the U-shaped liquid pipe is fixedly connected inside the U-shaped mounting groove, both ends of the U-shaped liquid pipe are higher than the upper outer wall of the base platform, and oil is arranged inside the U-shaped liquid pipe.

[0007] By providing a base, a column, a top platform, a movable platform, a mounting platform, a square seat, a clamping assembly and a deformation feedback assembly, when a tensile test is performed on a forging, the deformation data of the forging under different tensile forces can be directly fed back by using the deformation feedback assembly, and the deformation data can be displayed intuitively by using the change of the liquid column, thereby avoiding the inability to observe the metal forging due to the unclear deformation. This improves the visibility of the test data.

[0008] In a preferred solution, the air box is provided with a pull-out hole and an exhaust hole, the pull-out hole is located on the upper side of the air box, the exhaust hole is located on the lower side of the air box, the air box is provided with a rectangular hole, a micro air pump is fixedly connected to the inside of the rectangular hole, and an inner pressure plate is provided inside the air box, the outer side of the inner pressure plate is provided with a rubber layer, a pull-out rod is fixedly connected to the upper side of the inner pressure plate, the upper end of the pull-out rod passes through the pull-out hole of the air box and is fixedly connected to a side frame, a groove is provided on the square seat of the mounting platform above the movable platform, and the groove of the side frame and the square seat are fixedly connected; the bottom platform A circular hole is opened, and a telescopic tube is fixedly connected inside the circular hole, a mounting head is fixedly connected to the upper end of the telescopic tube, the mounting head is fixedly connected to the exhaust hole, and a gas pipe is fixedly connected to the lower end of the telescopic tube. The gas pipe is located inside the base, and two two-way connectors are fixedly connected to the outside of a column, the two two-way connectors are connected by a conduit, one end of the gas pipe is fixedly connected to a two-way connector, one end of the U-shaped liquid pipe is fixedly connected to the other two-way connector, and the other end of the U-shaped liquid pipe is fixedly connected to a liquid column feedback pipe.

[0009] By setting up a deformation variable feedback component, the deformation variable feedback component uses the liquid level change in the liquid column feedback tube to directly feedback the deformation variable of the forging, so as to achieve an intuitive display of the deformation variable data, avoid the metal forging deformation variable is not obvious and lead to the inability to observe, improve the visibility of the test data; the inner cavity of the air box and the cross-sectional area of ​​the inner pressure plate are increased, when the inner pressure plate is displaced, more air can be pushed out of the air box, so as to achieve the effect of amplifying the deformation variable feedback data, making the liquid level change in the liquid column feedback tube more obvious; the micro air pump can adjust the air pressure in the air box to ensure that the U-tube can be in a liquid level state at the initial time.

[0010] In a preferred solution, the movable table is provided with two symmetrical mounting grooves, the interiors of the two mounting grooves are fixedly connected with bending arc frames, the two bending arc frames are respectively located above the two side attachment frames, two symmetrical circular holes are provided on the two bending arc frames, and the upper sides of the two side attachment frames are fixedly connected with two symmetrical sliding rods, the sliding rods are respectively located inside the circular holes of the bending arc frames and are movably connected, the upper ends of the two sliding rods located on the same side are fixedly connected with the same top block, the outsides of the sliding rods are sleeved with return springs, and the two ends of the return springs are respectively fixedly connected to the lower side of the top block and the upper side of the bending arc frame.

[0011] By providing an arc frame and a side frame, the arc frame and the side frame are movably connected by a sliding rod and a reset spring, while ensuring their overall synchronous movement, the small range of relative displacement of the movable platform and the side frame during the test is met, thereby ensuring the feasibility of the pull rod driving the inner pressure plate to move downward in the air box.

[0012] In a preferred scheme, locking components are provided on the two side frames, and the two locking components are symmetrically distributed; the locking components include a shift slide and a flip frame, the shift slide is located on the side frame, and vertical slide grooves are provided on the two columns. The two shift slides are respectively located in the vertical slide grooves on the two columns and are movably connected, locking buckle grooves are provided on opposite sides of the two columns, and the locking buckle grooves are located on the sides of the vertical slide grooves, and the flip frame is movably connected to the side frame, and a snap plate is fixedly connected to the front end of the flip frame, which is snapped with the snap plate and the locking buckle groove, and a locking hydraulic cylinder is fixedly connected to the side of the side frame away from the shift slide, and a movable block is fixedly connected to the telescopic end of the locking hydraulic cylinder, and the movable block and the flip frame are movably connected.

[0013] By providing a locking component, the locking component uses a locking hydraulic cylinder to drive the two flip frames to flip. After the flip frames are flipped, the snap plates contact and are fixed with the locking grooves of the columns, thereby fixing the position of the side frames and ensuring the normal operation of the deformation feedback components during subsequent tests. The snap plates and locking grooves are used for fastening and fixing, which facilitates the rapid change of the fixing state of the side frames and improves the convenience of the device testing process.

[0014] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

[0015] By providing a clamping assembly, the clamping assembly utilizes two synchronously moving clamping seats to clamp and fix the forging under the drive of an opening and closing hydraulic cylinder. The two clamping seats adopt an inverted triangle type, which can transmit the bearing force to the side limit seats after clamping, thereby improving the clamping stability and avoiding deformation and damage of the simple clamping seat due to excessive force during the tensile test.

[0016] In a preferred scheme, the top platform is fixedly connected to the mounting platform, and two symmetrical sliding holes are provided on the movable platform, and two symmetrical sliding columns are fixedly connected to the lower side of the mounting platform located above the movable platform, and the two sliding columns are respectively located in the two sliding holes and movably connected, a pressure sensor is arranged between the two sliding columns, and the two ends of the pressure sensor are respectively fixedly connected to the mounting platform and the movable platform; the upper side of the bottom platform is fixedly connected to two symmetrical upper platforms, and the two upper platforms are respectively located in the inside of the two columns, and the two upper platforms and the top platform are movably connected with lifting rods, and the movable platform is provided with two symmetrical threaded holes, and the two lifting rods are located in the two threaded holes of the movable platform and are rotatably connected through the inner wall threads, and the lower ends of the two lifting rods are fixedly connected with a rotating shaft, and the outside of the rotating shaft is fixedly connected with a pulling gear, and a cavity is provided inside the bottom platform, and a driving motor is fixedly connected inside the cavity, and the output end of the driving motor is connected to a short shaft through a coupling, and the other end of the short shaft is fixedly connected with a driving gear, and the driving gear and the two pulling gears are meshed through tooth grooves.

[0017] From the above, it can be seen that the forging tensile testing equipment provided by the present invention has the function of directly feeding back the deformation data of the forging under different tensile forces by using the deformation feedback component when conducting a tensile test on the forging, and intuitively displaying it in the form of liquid column changes, thereby avoiding the situation where the deformation of the metal forging is not obvious and cannot be observed, thereby improving the visibility of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a forging tensile testing device proposed by the present invention;

[0019] Figure 2 This is a front view structural schematic diagram of a forging tensile testing device proposed by the present invention;

[0020] Figure 3 A schematic diagram of the structure of a movable table of a forging tensile test equipment proposed by the present invention;

[0021] Figure 4 A schematic diagram of the side frame and air box structure of a forging tensile test equipment proposed by the present invention;

[0022] Figure 5 A schematic diagram of the base structure of a forging tensile testing device proposed by the present invention;

[0023] Figure 6 A schematic diagram of the structure of an air pipe and a U-shaped liquid pipe of a forging tensile test device proposed by the present invention;

[0024] Figure 7 A schematic diagram of the structure of a locking assembly of a forging tensile test device proposed by the present invention;

[0025] Figure 8 A schematic diagram of the structure of a mounting platform for a forging tensile test device proposed by the present invention;

[0026] Fig. 9 A schematic diagram of the structure of a clamping seat and an opening and closing plate of a forging tensile test device proposed by the present invention;

[0027] Fig.10 The present invention provides a schematic cross-sectional structural diagram of a base of a forging tensile testing device.

[0028] In the figure: 1, bottom platform; 2, column; 3, top platform; 4, movable platform; 5, mounting platform; 6, square seat; 7, clamping assembly; 701, clamping seat; 702, limit seat; 703, chuck; 704, opening and closing groove; 705, opening and closing plate; 706, opening and closing hydraulic cylinder; 707, attached seat; 708, anti-slip hydraulic cylinder; 709, mounting seat; 710, contact sensor; 8, deformation variable feedback assembly; 801, side frame; 802, air box; 803, pull-out hole; 804, exhaust hole; 805, inner pressure plate; 806, pull-out rod; 807, side frame; 808, micro air pump; 809, installation Mounting head; 810, telescopic tube; 811, air pipe; 812, two-way connector; 813, U-shaped liquid pipe; 814, liquid column feedback tube; 9, bending frame; 10, sliding rod; 11, top block; 12, reset spring; 13, locking assembly; 1301, shift slide; 1302, flip frame; 1303, locking buckle groove; 1304, snap plate; 1305, locking hydraulic cylinder; 1306, movable block; 14, sliding column; 15, sliding hole; 16, pressure sensor; 17, upper platform; 18, lifting rod; 19, rotating shaft; 20, pulling gear; 21, driving motor; 22, driving gear. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] The forging tensile testing device disclosed in the present invention is mainly used in the scenario where the forging tensile test has poor visibility and cannot be displayed intuitively.

[0031] Reference Figure 1-10A forging tensile test device comprises a bottom platform 1, two symmetrical columns 2 are connected to the upper side of the bottom platform 1 by bolts, the upper ends of the two columns 2 are connected to the same top platform 3 by bolts, and a movable platform 4 is arranged between the bottom platform 1 and the top platform 3, and mounting platforms 5 are arranged above the movable platform 4 and below the top platform 3, the two mounting platforms 5 are symmetrically distributed up and down, and square seats 6 are arranged on the two mounting platforms 5, and clamping components 7 are arranged on the two mounting platforms 5, and deformation variable reflection devices are arranged on the side of the movable platform 4. Feedback component 8, the deformation variable feedback component 8 includes two side frames 801, an air box 802 and a U-shaped liquid pipe 813. The two side frames 801 are symmetrically distributed on both sides of the air box 802. The two side frames 801 are connected to the air box 802 by bolts, and a U-shaped mounting hole is opened inside the base 1. The U-shaped liquid pipe 813 is located inside the U-shaped mounting groove and is connected by bolts. Both ends of the U-shaped liquid pipe 813 are higher than the upper outer wall of the base 1, and oil is arranged inside the U-shaped liquid pipe 813.

[0032] Specifically, the clamping assembly 7 on the top platform 3 is used to fix the forging from the upper end, and then the position of the active platform 4 is adjusted, and the clamping assembly 7 on the active platform 4 is used to fix the lower end of the forging. After the fixation is completed, the deformation feedback assembly 8 is adjusted to be in a working state, and after the completion, the forging tensile test is carried out; when the device performs a tensile test on the forging, the deformation feedback assembly 8 can directly feedback the deformation data of the forging under different tensile forces, and the liquid column change is used to intuitively display it, so as to avoid the metal forging deformation being unclear and unable to be observed, thereby improving the visibility of the test data.

[0033] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6, a pulling hole 803 and an exhaust hole 804 are provided on the air box 802, the pulling hole 803 is located on the upper side of the air box 802, and the exhaust hole 804 is located on the lower side of the air box 802, a rectangular hole is provided on the air box 802, and a micro air pump 808 is connected to the inside of the rectangular hole by bolts, and an inner pressure plate 805 is provided inside the air box 802, and the outer side of the inner pressure plate 805 is provided with a rubber layer, and a pulling rod 806 is connected to the upper side of the inner pressure plate 805 by bolts, and the upper end of the pulling rod 806 passes through the pulling hole 803 of the air box 802 and is connected to a side frame 807 by bolts, and a groove is provided on the square seat 6 of the mounting platform 5 above the movable platform 4, and the side frame 807 is connected to the groove of the square seat 6 by bolts; a circular groove is provided on the bottom platform 1 Hole, the inside of the circular hole is connected with a telescopic tube 810 by bolts, the upper end of the telescopic tube 810 is connected with a mounting head 809 by bolts, the mounting head 809 and the exhaust hole 804 are connected by bolts, the lower end of the telescopic tube 810 is connected with an air pipe 811 by bolts, the air pipe 811 is located inside the base 1, and the outer side of a column 2 is connected with two two-way connectors 812 by bolts, the two two-way connectors 812 are connected by a conduit, one end of the air pipe 811 is connected to a two-way connector 812 by bolts, one end of a U-shaped liquid pipe 813 is connected to the other two-way connector 812 by bolts, and the other end of the U-shaped liquid pipe 813 is connected to a liquid column feedback pipe 814 by bolts.

[0034] Specifically, during the movement of the active position table 4, the side frame 801 and the air box 802 move synchronously with it. After the forging is clamped and fixed, wait for the state of the side frame 801 and the air box 802 to be stable, then fix the position of the two side frames 801, and then observe whether the liquid level of the U-shaped liquid pipe 813 is the same (that is, whether the liquid level is at the zero scale line position of the liquid column feedback pipe 814). If the liquid level is not the same, use the micro air pump 808 to adjust the air pressure in the air box 802 until the liquid level of the U-shaped liquid pipe 813 is Flush; during the tensile test, when the forging is deformed by the tensile force, the side frame 807 will drive the pull rod 806 to press down the inner pressure plate 805, and the inner pressure plate 805 will move downward, and the gas in the air box 802 will be compressed and enter the installation head 809 from the exhaust hole 804, and then enter the U-shaped liquid pipe 813 through the telescopic tube 810, the gas pipe 811 and the two two-way connectors 812. The liquid level of the U-shaped liquid pipe 813 changes, and the liquid level of the liquid column feedback tube 814 rises, and the rising value feeds back the deformation of the forging;

[0035] In specific application scenarios, the deformation variable feedback component 8 is suitable for the deformation variable feedback link during the tensile test of forgings, that is, the deformation variable feedback component 8 uses the liquid level change in the liquid column feedback tube 814 to directly feedback the deformation variable of the forging, so as to achieve an intuitive display of the deformation variable data, avoid the metal forging deformation variable being unclear and unable to be observed, and improve the visibility of the test data; the inner cavity of the air box 802 and the cross-sectional area of ​​the inner pressure plate 805 are increased, and when the inner pressure plate 805 is displaced, more air can be pushed out of the air box 802, thereby achieving the effect of amplifying the deformation variable feedback data, making the liquid level change in the liquid column feedback tube 814 more obvious; the micro air pump 808 can adjust the air pressure in the air box 802 to ensure that the U-shaped tube can be in a liquid level state at the initial stage.

[0036] Reference Figure 3 , Figure 4 and Figure 7 Two symmetrical mounting grooves are provided on the movable platform 4, and the interiors of the two mounting grooves are connected with bending frames 9 by bolts. The two bending frames 9 are respectively located above the two side attachment frames 801. Two symmetrical circular holes are provided on the two bending frames 9, and the upper sides of the two side attachment frames 801 are connected with two symmetrical sliding rods 10 by bolts. The sliding rods 10 are respectively located in the circular holes of the bending frames 9 for sliding connection. The upper ends of the two sliding rods 10 located on the same side are connected with the same top block 11 by bolts. The outsides of the sliding rods 10 are sleeved with reset springs 12, and the two ends of the reset springs 12 are respectively connected to the lower side of the top block 11 and the upper side of the bending frame 9 by bolts.

[0037] Specifically, when the forging is deformed by force, since the two side frames 801 are fixed, the downward movement of the active platform 4 will drive the bending frame 9 to move downward, and the bending frame 9 slides down on the sliding rod 10, and the reset spring 12 is stretched to elastically deform; the bending frame 9 and the side frames 801 are movably connected by the sliding rod 10 and the reset spring 12, which ensures their overall synchronous movement while satisfying the small range of relative displacement of the active platform 4 and the side frames 801 during the test, thereby ensuring the feasibility of the pull rod 806 to drive the inner pressure plate 805 to move downward in the air box 802.

[0038] Reference Figure 3 , Figure 4 and Figure 7, the two side frames 801 are both provided with locking components 13, and the two locking components 13 are symmetrically distributed; the locking components 13 include a shift slide 1301 and a flip frame 1302, the shift slide 1301 is located on the side frame 801, the two columns 2 are both provided with vertical slides, the two shift slides 1301 are respectively located in the vertical slides on the two columns 2 for sliding connection, and the opposite sides of the two columns 2 are provided with locking buckle grooves 1303, and the locking buckle grooves 1303 are located at the vertical slides. On the side, the flip frame 1302 is rotatably connected to the side attachment frame 801 through a bearing, the front end of the flip frame 1302 is connected with a snap plate 1304 through bolts, the snap plate 1304 is snapped with a locking snap groove 1303, and a locking hydraulic cylinder 1305 is connected with the side of the side attachment frame 801 away from the shift slide 1301 through bolts, the telescopic end of the locking hydraulic cylinder 1305 is connected with a movable block 1306 through bolts, and the movable block 1306 and the flip frame 1302 are movably connected.

[0039] Specifically, before the test, during the movement of the active position platform 4, the locking assembly 13 is in the open state; after the states of the side frame 801 and the air box 802 are stabilized, the two locking hydraulic cylinders 1305 are started to extend and push the two flip frames 1302 to flip toward the column 2, so that the buckle plates 1304 on the two flip frames 1302 contact and are fixed with the locking buckle grooves 1303 on the column 2;

[0040] In a specific application scenario, the locking component 13 is suitable for fixing the two side frames 801 before the test, that is, the locking component 13 uses a locking hydraulic cylinder 1305 to drive the two flip frames 1302 to flip. After the flip frames 1302 flip, they contact and are fixed with the locking grooves 1303 of the columns 2 through the snap plates 1304, thereby fixing the positions of the side frames 801 and ensuring the normal operation of the deformation feedback component 8 during subsequent tests. The snap-on fixing method of the snap plates 1304 and the locking grooves 1303 facilitates the rapid change of the fixing state of the side frames 801 and improves the convenience of the device testing process.

[0041] Reference Figure 3 , Figure 8 and Fig. 9The clamping assembly 7 includes two clamping seats 701 and two limiting seats 702. The two clamping seats 701 and the two limiting seats 702 are symmetrically distributed inside the mounting platform 5. The two limiting seats 702 are connected to the mounting platform 5 by bolts. The two clamping seats 701 are provided with sliding grooves on opposite sides. The clamping seats 701 and the limiting seats 702 on the same side are slidably connected, and the two clamping seats 701 are provided with clamping heads 703 on opposite sides. The two clamping seats 701 are provided with opening and closing grooves 704. The opening and closing grooves 704 on the two clamping seats 701 are symmetrically distributed. The opening and closing grooves 704 on the two clamping seats 701 are slidably connected with the same An opening and closing plate 705; a concave hole is opened on the square seat 6, and the direction of the concave hole is close to the side of the clamping seat 701, and the inside of the concave hole is connected to an opening and closing type hydraulic cylinder 706 by bolts, and the telescopic end of the opening and closing type hydraulic cylinder 706 is connected to the opening and closing plate 705 by bolts, and the opening and closing plate 705 is connected to an attached seat 707 by bolts, and the attached seat 707 is connected to an anti-slip hydraulic cylinder 708 by bolts, and the telescopic end of the anti-slip hydraulic cylinder 708 is located on the side away from the clamping plate 705, and the telescopic end of the anti-slip hydraulic cylinder 708 is connected to a mounting seat 709 by bolts, and the mounting seat 709 is connected to a contact sensor 710 by bolts.

[0042] Specifically, the forging is placed between the two clamping seats 701, and the opening and closing hydraulic cylinder 706 is started to extend and push the opening and closing plate 705 forward. The two clamping seats 701 move along with the opening and closing plate 705, and are limited by the limit seat 702. The two clamping seats 701 move closer to each other until the clamp 703 clamps and fixes the forging; when both ends of the forging are fixed, the two anti-slip hydraulic cylinders 708 are started synchronously to extend, and the two contact sensors 710 move closer to each other until the two contact sensors 710 contact the upper and lower ends of the forging, and the signal is fed back and accepted;

[0043] In a specific application scenario, the clamping assembly 7 is suitable for the clamping and fixing link of the forging, that is, the clamping assembly 7 uses two synchronously moving clamping seats 701 to clamp and fix the forging under the drive of the opening and closing hydraulic cylinder 706. The two clamping seats 701 adopt an inverted triangle type, which can transmit the bearing force to the side limit seat 702 after clamping, thereby improving the clamping stability and avoiding the deformation and damage of the simple clamping seat 701 due to excessive force during the tensile test;

[0044] It should be noted that after the forging is clamped and fixed, two contact sensors 710 are used to contact the forging from the upper and lower ends. The contact sensors 710 can promptly feedback the tactile signal. When the clamping is unstable during the test and the forging slides between the clamps 701, the contact between the contact sensor and the forging is interrupted, and the signal will be fed back in time to avoid the forging slipping due to unstable clamping during the test, which would be misjudged as deformation data of the forging.

[0045] Reference Figure 3 , Figure 8 and Fig.10 The top platform 3 is connected to the mounting platform 5 by bolts, and two symmetrical sliding holes 15 are provided on the movable platform 4. The lower side of the mounting platform 5 located above the movable platform 4 is connected to two symmetrical sliding columns 14 by bolts. The two sliding columns 14 are respectively located inside the two sliding holes 15 for sliding connection. A pressure sensor 16 is arranged between the two sliding columns 14. The two ends of the pressure sensor 16 are respectively connected to the mounting platform 5 and the movable platform 4 by bolts; the upper side of the bottom platform 1 is connected to two symmetrical upper platforms 17 by bolts. The two upper platforms 17 are respectively located inside the two columns 2. The two upper platforms 17 and the top platform 3 are connected by shafts. The bearing is rotatably connected with a lifting rod 18, and two symmetrical threaded holes are provided on the movable platform 4. The two lifting rods 18 are located inside the two threaded holes of the movable platform 4 and are rotatably connected through the inner wall threads, and the lower ends of the two lifting rods 18 are connected with a rotating shaft 19 through bolts, and the outside of the rotating shaft 19 is connected with a pulling gear 20 through bolts. A cavity is provided inside the base 1, and a driving motor 21 is connected inside the cavity through bolts. The output end of the driving motor 21 is connected with a short shaft through a coupling, and the other end of the short shaft is connected with a driving gear 22 through bolts, and the driving gear 22 is meshed with the two pulling gears 20 through tooth grooves.

[0046] Specifically, when the positioning platform 4 is raised or lowered and undergoes a tensile test, the driving motor 21 drives the driving gear 22 to engage the pulling gear 20 , and the two lifting rods 18 rotate along with the pulling gear 20 , and the positioning platform 4 is raised or lowered on the two lifting rods 18 .

[0047] Working principle: When in use, the clamping assembly 7 on the top platform 3 is used to fix the forging from the upper end, and then the position of the movable platform 4 is adjusted, and the clamping assembly 7 on the movable platform 4 is used to fix the lower end of the forging (fixing process: the forging is placed between the two clamping seats 701, and the opening and closing hydraulic cylinder 706 is started to stretch it to push the opening and closing plate 705 forward, and the two clamping seats 701 move along with the opening and closing plate 705, and are limited by the limiting seat 702. The two clamping seats 701 move closer to each other until the clamp 703 clamps the forging and fixes it). When both ends of the forging are fixed, the two anti-slip hydraulic cylinders 708 are started synchronously to stretch, and the two contact sensors 710 move closer to each other until the two contact sensors 710 contact the upper and lower ends of the forging, and the signal is fed back and accepted;

[0048] During the movement of the active position platform 4, the side frame 801 and the air box 802 move synchronously with it. When the forging is clamped and fixed, wait for the state of the side frame 801 and the air box 802 to be stable, and then fix the position of the two side frames 801 (after the state of the side frame 801 and the air box 802 is stable, start the two locking hydraulic cylinders 1305 to extend and push the two flip frames 1302 to flip toward the column 2, so that the buckle plates 1304 on the two flip frames 1302 contact and snap-fit ​​with the locking buckle grooves 1303 on the column 2), and then observe whether the liquid levels of the U-shaped liquid pipe 813 are the same (that is, whether the liquid level is at the zero scale line position of the liquid column feedback pipe 814). If the liquid levels are not the same, use the micro air pump 808 to adjust the air pressure in the air box 802 until the liquid levels of the U-shaped liquid pipe 813 are flush. After completion, perform the forging tensile test;

[0049] During the tensile test, when the forging is deformed by tension, the side frame 807 will drive the pull rod 806 to press down the inner pressure plate 805, and the inner pressure plate 805 will move downward. The gas in the air box 802 is compressed and enters the mounting head 809 from the exhaust hole 804, and then enters the U-shaped liquid pipe 813 through the telescopic tube 810, the air supply pipe 811 and the two two-way connectors 812. The liquid level of the U-shaped liquid pipe 813 changes, and the liquid level of the liquid column feedback tube 814 rises. The rising value is used to feed back the deformation of the forging.

[0050] The above description is only a preferred specific implementation manner of the present invention, but 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 scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A forging tensile test device, comprising a base (1), characterized in that: The upper side of the base (1) is fixedly connected to two symmetrical columns (2), the upper ends of the two columns (2) are fixedly connected to the same top platform (3), and an active platform (4) is arranged between the base (1) and the top platform (3), and mounting platforms (5) are arranged above the active platform (4) and below the top platform (3), the two mounting platforms (5) are symmetrically distributed up and down, and square seats (6) are arranged on the two mounting platforms (5), and clamping components (7) are arranged on the two mounting platforms (5), and a deformation variable feedback component (8) is arranged on the side of the active platform (4). The deformation variable feedback component (8) comprises two side frames (801), an air box (802) and a U-shaped liquid pipe (813). The two side frames (801) are symmetrically distributed on both sides of the air box (802). The two side frames (801) are fixedly connected to the air box (802). A U-shaped mounting hole is provided inside the base (1). The U-shaped liquid pipe (813) is fixedly connected inside the U-shaped mounting groove. Both ends of the U-shaped liquid pipe (813) are higher than the upper outer wall of the base (1). Oil is provided inside the U-shaped liquid pipe (813).

2. A forging tensile testing device according to claim 1, characterized in that: The air box (802) is provided with a pull-out hole (803) and an exhaust hole (804), the pull-out hole (803) is located on the upper side of the air box (802), and the exhaust hole (804) is located on the lower side of the air box (802). The air box (802) is provided with a rectangular hole, and a micro air pump (808) is fixedly connected to the inside of the rectangular hole. An inner pressure plate (805) is provided inside the air box (802), and the outer side of the inner pressure plate (805) is provided with a rubber layer. A pull-out rod (806) is fixedly connected to the upper side of the inner pressure plate (805), and the upper end of the pull-out rod (806) passes through the pull-out hole (803) of the air box (802) and is fixedly connected to a side frame (807). A groove is provided on the square seat (6) of the mounting platform (5) above the movable platform (4), and the side frame (807) is fixedly connected to the groove of the square seat (6).

3. A forging tensile testing device according to claim 2, characterized in that: The base (1) is provided with a circular hole, a telescopic tube (810) is fixedly connected inside the circular hole, a mounting head (809) is fixedly connected to the upper end of the telescopic tube (810), the mounting head (809) is fixedly connected to the exhaust hole (804), a gas supply pipe (811) is fixedly connected to the lower end of the telescopic tube (810), the gas supply pipe (811) is located inside the base (1), and two two-way connectors (812) are fixedly connected to the outer side of a column (2), the two two-way connectors (812) are connected via a conduit, one end of the gas supply pipe (811) is fixedly connected to one two-way connector (812), one end of a U-shaped liquid pipe (813) is fixedly connected to another two-way connector (812), and the other end of the U-shaped liquid pipe (813) is fixedly connected to a liquid column feedback pipe (814).

4. A forging tensile testing device according to claim 1, characterized in that: The movable platform (4) is provided with two symmetrical mounting grooves, and the interiors of the two mounting grooves are fixedly connected with a bending frame (9), and the two bending frames (9) are respectively located above the two side attachment frames (801). The two bending frames (9) are provided with two symmetrical circular holes, and the upper sides of the two side attachment frames (801) are fixedly connected with two symmetrical sliding rods (10), and the sliding rods (10) are respectively located inside the circular holes of the bending frames (9) and are movably connected. The upper ends of the two sliding rods (10) located on the same side are fixedly connected with the same top block (11), and the outsides of the sliding rods (10) are sleeved with a return spring (12), and the two ends of the return spring (12) are respectively fixedly connected to the lower side of the top block (11) and the upper side of the bending frame (9).

5. A forging tensile testing device according to claim 4, characterized in that: The two side attachment frames (801) are both provided with locking components (13), and the two locking components (13) are symmetrically distributed.

6. A forging tensile testing device according to claim 5, characterized in that: The locking assembly (13) comprises a shifting slide (1301) and a flip frame (1302), wherein the shifting slide (1301) is located on the side frame (801), and the two columns (2) are each provided with a vertical slide groove, and the two shifting slides (1301) are respectively located in the vertical slide grooves on the two columns (2) and are movably connected, and the two columns (2) are each provided with a locking buckle groove (1303) on the opposite side, and the locking buckle groove (1303) is located beside the vertical slide groove, and the flip frame (1302) is connected to the side frame (801). The side attachment frames (801) are movably connected to each other, a snap plate (1304) is fixedly connected to the front end of the flip frame (1302), the snap plate (1304) is snapped with the locking snap groove (1303), a locking hydraulic cylinder (1305) is fixedly connected to the side of the side attachment frame (801) away from the shift slide (1301), a movable block (1306) is fixedly connected to the telescopic end of the locking hydraulic cylinder (1305), and the movable block (1306) is movably connected to the flip frame (1302).

7. A forging tensile testing device according to claim 1, characterized in that: The clamping assembly (7) comprises two clamping seats (701) and two limiting seats (702), the two clamping seats (701) and the two limiting seats (702) are both located inside the mounting platform (5) and are symmetrically distributed, the two limiting seats (702) are both fixedly connected to the mounting platform (5), the two clamping seats (701) are each provided with a sliding groove on opposite sides, the clamping seats (701) and the limiting seats (702) on the same side are both movably connected, and the two clamping seats (701) are each provided with a clamping head (703) on opposite sides, the two clamping seats (701) are each provided with an opening and closing groove (704), the opening and closing grooves (704) on the two clamping seats (701) are symmetrically distributed, and the opening and closing grooves (704) on the two clamping seats (701) are movably connected to the same opening and closing plate (705) inside.

8. A forging tensile testing device according to claim 7, characterized in that: The square seat (6) is provided with a concave hole, the concave hole is oriented toward a side close to the clamp seat (701), an opening and closing hydraulic cylinder (706) is fixedly connected to the inside of the concave hole, a telescopic end of the opening and closing hydraulic cylinder (706) is fixedly connected to the opening and closing plate (705), an attached seat (707) is fixedly connected to the opening and closing plate (705), an anti-slip hydraulic cylinder (708) is fixedly connected to the attached seat (707), the telescopic end of the anti-slip hydraulic cylinder (708) is located on a side away from the clamp plate (705), the telescopic end of the anti-slip hydraulic cylinder (708) is fixedly connected to a mounting seat (709), and a contact sensor (710) is fixedly connected to the mounting seat (709).

9. A forging tensile testing device according to claim 1, characterized in that: The top platform (3) is fixedly connected to the mounting platform (5), and two symmetrical sliding holes (15) are provided on the movable platform (4). Two symmetrical sliding columns (14) are fixedly connected to the lower side of the mounting platform (5) located above the movable platform (4). The two sliding columns (14) are respectively located inside the two sliding holes (15) and are movably connected. A pressure sensor (16) is provided between the two sliding columns (14), and the two ends of the pressure sensor (16) are respectively fixedly connected to the mounting platform (5) and the movable platform (4).

10. A forging tensile testing device according to claim 9, characterized in that: The upper side of the base (1) is fixedly connected to two symmetrical upper platforms (17), the two upper platforms (17) are respectively located inside the two uprights (2), and lifting rods (18) are movably connected between the two upper platforms (17) and the top platform (3). The movable platform (4) is provided with two symmetrical threaded holes, the two lifting rods (18) are located inside the two threaded holes of the movable platform (4) and are rotatably connected through inner wall threads, and the lower ends of the two lifting rods (18) are fixedly connected to a rotating shaft (19), and the outside of the rotating shaft (19) is fixedly connected to a driving gear (20). A cavity is provided inside the base (1), and a driving motor (21) is fixedly connected inside the cavity. The output end of the driving motor (21) is connected to a short shaft through a coupling, and the other end of the short shaft is fixedly connected to a driving gear (22), and the driving gear (22) and the two driving gears (20) are meshed through tooth grooves.

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