A tensile testing machine for automotive parts and its usage method

Abstract

The present invention discloses a tensile testing machine for automobile parts and a method for using the same, and belongs to the technical field of tensile testing machines. A tensile testing machine for automobile parts comprises a machine base, a test chamber for tensile testing is provided on the machine base, and further comprises: a tensile testing part, a plurality of tensile testing parts are provided and are equidistantly arranged in the test chamber, and are used to perform tensile testing on automobile parts; a partitioning assembly, a plurality of partitioning assemblies are provided, and each group of partitioning assemblies is arranged between two adjacent tensile testing parts; and a folding cover plate, which is arranged at the front side of the machine base and is used to shield the test chamber; the present invention can perform tensile testing on multiple automobile parts at the same time, and the arrangement of the partitioning assembly makes each automobile part independent of each other and does not interfere with each other, so as to avoid the automobile parts that fall off or break from affecting the tensile testing of other automobile parts around, and in addition, the arrangement of the folding cover plate effectively shields and covers the test chamber, and ensures a safe working environment for personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of tensile testing machines, and particularly to a tensile testing machine for automotive parts and its usage method. Background Art

[0002] With the increasingly fierce competition in the automotive parts processing market, as well as the continuous upgrading and application of technologies, the trend of supporting the automotive parts processing system and modular supply is in the ascendant, the transfer speed of the automotive parts processing industry is accelerating, and there is a wide variety of automotive parts. In the production process of automotive parts, performance testing of automotive parts is also an important link.

[0003] When the existing tensile testing machine conducts tensile tests on automotive parts, generally only one part can be tested for tensile force at a time, and multiple parts cannot be tested for tensile force simultaneously. In order to ensure the accuracy of the tensile test results, multiple parts need to be tested for tensile force. Sequentially testing multiple automotive parts for tensile force will reduce the working efficiency of the tensile test; moreover, when automotive parts are being tested, they may break away from the fixture or break due to the tensile force, generating debris, which can cause harm to the surrounding operators. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to provide a tensile testing machine for automotive parts and its usage method.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tensile testing machine for automotive parts, including a machine base, a test chamber for tensile testing is provided on the machine base, and further includes:

[0007] A tensile test part, multiple tensile test parts are provided and arranged at equal intervals in the test chamber, and are used for conducting tensile tests on automotive parts;

[0008] A partition component, multiple groups of partition components are provided, and each group of partition components is arranged between two adjacent tensile test parts; and

[0009] A folding cover plate, which is arranged on the front side of the machine base and is used to cover the test chamber;

[0010] Wherein, a towing rope is arranged between the folding cover plate and the partition component, and an auxiliary support component that is movably abutted against the partition component is further arranged in the test chamber.

[0011] Preferably, the tensile test part includes an upper positioning seat and a lower positioning seat. The lower positioning seat is fixedly arranged on the inner wall of the bottom of the test chamber. A hydraulic cylinder for driving the upper positioning seat to lift is arranged on the top of the machine base. A tensile sensor is arranged between the plunger rod of the hydraulic cylinder and the upper positioning seat.

[0012] Preferably, the upper positioning seat and the lower positioning seat have the same structure, and both include a U-shaped plate, screws threadedly connected to both ends of the U-shaped plate, and knobs and clamping plates arranged at both ends of the screws. The clamping plates are slidably connected to the U-shaped plate.

[0013] Preferably, the separating component includes a rotating rod arranged on the top of the machine base, a flexible metal sheet wound and connected to the rotating rod, a rotating shaft rotatably connected to the bottom of the machine base, a first reel arranged on the rotating shaft, a pulling rope wound and connected to the first reel and connected to the end of the flexible metal sheet, and a driving motor fixedly arranged in the machine base for driving the rotating shaft to rotate. A first chute for the flexible metal sheet to slide is arranged on the inner wall of the test chamber.

[0014] Preferably, the separating component further includes a threaded rod rotatably connected in the machine base, and upper and lower bevel gears fixedly arranged at both ends of the threaded rod. A driving bevel gear meshing with the lower bevel gear is arranged on the rotating shaft, and a driven bevel gear meshing with the upper bevel gear is arranged on the rotating rod.

[0015] Preferably, a second chute is arranged on the machine base. The folding cover plate includes a first slider fixedly arranged in the second chute, a third slider slidably connected in the second chute, and a plurality of second sliders slidably connected between the first slider and the third slider. Two hinge plate bodies are movably hinged between the first slider and the second slider, between adjacent two second sliders, and between the second slider and the third slider.

[0016] Preferably, a double-line reel is arranged on the rotating shaft. The towing rope is wound and connected to the double-line reel and connected to the third slider. The towing rope includes a first rope body connected to the upper side of the third slider and a second rope body connected to the lower side of the third slider.

[0017] Preferably, a limiting block is fixedly arranged on the hinge plate body, and a limiting groove for inserting the flexible metal sheet is arranged on the limiting block.

[0018] Preferably, the auxiliary support component includes a receiving groove arranged on the inner wall of the test chamber, a plurality of swing rods rotatably connected in the receiving groove through a first pin shaft, an upper stop rod rotatably connected to the upper side of the swing rod through a second pin shaft, and a lower stop rod rotatably connected to the lower side of the swing rod through a third pin shaft. A clamping groove matched with the lower stop rod is arranged on the upper stop rod. Torsion springs are sleeved on both the first pin shaft and the second pin shaft. A moving pressure plate that is in movable contact with the end of the swing rod is threadedly arranged on the threaded rod, and the moving pressure plate slides in the machine base.

[0019] The present invention also discloses a method for using a tensile testing machine for automotive parts, comprising the following steps:

[0020] S1: Fix a plurality of automotive parts with the same size to be tested through the tensile testing part, and the upper positioning seat cooperates with the lower positioning seat to position the automotive parts;

[0021] S2: Subsequently, control the driving motor to operate. The output shaft of the driving motor drives the rotating shaft to rotate. When the rotating shaft rotates, the first winding drum and the double-wire winding drum rotate;

[0022] When the rotating shaft drives the first winding drum to rotate, the pulling rope is wound up. The driving bevel gear on the rotating shaft meshes with the lower bevel gear on the threaded rod for transmission. The lower bevel gear drives the upper bevel gear to mesh with the driven bevel gear on the rotating rod through the threaded rod, so that the rotating rod rotates and cooperates with the pulling rope to pull down the flexible metal sheet. The flexible metal sheet moves down along the second sliding groove on one side of the test chamber, so that the flexible metal sheet separates two adjacent tensile testing parts;

[0023] The double-wire winding drum winds up the second rope body of the towing rope and releases the first rope body, so that the third slider in the second sliding groove moves down. The third slider drives the second slider to move down in the second sliding groove through the hinged plate body, so that a plurality of hinged plate bodies are in the same plane and block the test chamber. When the hinged plate body is horizontally placed, the limiting block arranged on the upper side thereof is clamped with the flexible metal sheet to limit one end of the flexible metal sheet far from the first sliding groove;

[0024] S3: When the threaded rod rotates, the moving pressure plate threadedly connected thereto moves up. The moving pressure plate no longer abuts against one end of the swing rod. The swing rod rotates downward under the action of the torsion spring at the first pin shaft. After the swing rod no longer abuts against the inner wall of the receiving groove, the upper stop rod on the upper side of the swing rod quickly flips and resets under the action of the torsion spring at the second pin shaft, while the lower stop rod on the lower side of the swing rod automatically droops and flips under its own gravity. The drooping and flipping lower stop rod is clamped with the upper stop rod on the lower swing rod, and the flipping and resetting upper stop rod is clamped with the drooping lower stop rod at the upper swing rod, so that the swing rod cooperates with the clamped upper stop rod and lower stop rod to protect the flexible metal sheet;

[0025] S4: Finally, control the hydraulic cylinder to operate, so that the hydraulic cylinder drives the positioned automotive parts to be pulled up through the upper positioning seat, and the tensile sensor detects the received tensile force.

[0026] Compared with the prior art, the present invention provides a tensile testing machine for automotive parts and a method for using the same, having the following beneficial effects:

[0027] 1. The tensile testing machine for automotive parts and its usage method can simultaneously conduct tensile tests on multiple automotive parts by setting multiple tensile testing parts, ensuring the working efficiency of the tensile test and the accuracy of the test results. The setting of the separation component makes each automotive part independent and non-interfering, preventing a fallen or broken automotive part from affecting the tensile tests of other surrounding automotive parts and ensuring the normal progress of the tensile test.

[0028] 2. The tensile testing machine for automotive parts and its usage method can facilitate the installation and fixation of automotive parts by winding the flexible metal sheet on the top of the machine base when not in use, ensuring the operating space for positioning automotive parts. It avoids the fixed setting of the separation component between two adjacent tensile testing parts, which would lead to a narrow space around the tensile testing part and difficult operation, increasing the difficulty of the tensile test on automotive parts by the staff.

[0029] 4. The tensile testing machine for automotive parts and its usage method, when the separation component controls the separation between two adjacent tensile testing parts, the folding cover plate automatically unfolds and covers the test chamber. On the one hand, it reduces the probability of internal materials flying out of the test chamber, facilitating the recovery of materials. On the other hand, it ensures a safe working environment for personnel.

[0030] 5. The tensile testing machine for automotive parts and its usage method, when the folding cover plate unfolds, the limiting block clamps the flexible metal sheet, which is convenient for improving the stability of the side of the flexible metal sheet away from the first chute, enhancing the separation and shielding stability of the flexible metal sheet. Moreover, the swing rod cooperates with the upper and lower blocking rods after clamping to protect the flexible metal sheet, strengthening the structural stability of the flexible metal sheet, preventing excessive impact on the flexible metal sheet when the automotive tensile part is stressed and cracked, and ensuring the service life of the equipment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0032] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0033] Figure 3 Schematic diagram of the structure of the lower positioning seat of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the folding cover plate of the present invention;

[0035] Figure 5 Schematic diagram of the partial sectional structure of the present invention Figure 1 ;

[0036] Figure 6 Schematic diagram of the partial sectional structure of the present inventionFigure 2 ;

[0037] Figure 7 is a partially enlarged structural schematic diagram of part A in the present invention; Figure 6 in the present invention;

[0038] Figure 8 is a partially enlarged structural schematic diagram of part B in the present invention; Figure 6 in the present invention;

[0039] Figure 9 is an external structural schematic diagram of the rotating rod of the present invention;

[0040] Figure 10 is a structural schematic diagram when the swing rod of the present invention is unfolded;

[0041] Figure 11 is a structural schematic diagram when the swing rod of the present invention is retracted.

[0042] In the figure: 1, machine base; 101, test chamber; 2, tensile test part; 201, upper positioning seat; 202, lower positioning seat; 203, hydraulic cylinder; 204, U-shaped plate; 2041, screw rod; 2042, knob; 2043, clamping plate; 3, folding cover plate; 301, first slider; 302, second slider; 303, third slider; 304, hinged plate body; 4, traction rope; 401, first rope body; 402, second rope body; 5, rotating rod; 501, flexible metal sheet; 502, first chute; 503, driven bevel gear; 6, rotating shaft; 601, first winding drum; 602, pulling rope; 603, driving motor; 604, driving bevel gear; 7, threaded rod; 701, upper bevel gear; 702, lower bevel gear; 8, second chute; 9, double-line winding drum; 10, limiting block; 1001, limiting groove; 11, accommodating groove; 111, swing rod; 112, upper stop rod; 1121, clamping groove; 113, lower stop rod; 12, moving pressing plate. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] Example 1: Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 A tensile testing machine for automotive parts includes a machine base 1. A test chamber 101 for tensile testing is provided on the machine base 1. It further includes:

[0046] A plurality of tensile test parts 2 are provided and are equidistantly arranged in the test chamber 101 for performing tensile tests on automotive parts;

[0047] A plurality of separating components are provided. Each group of separating components is arranged between two adjacent tensile test parts 2; and

[0048] A folding cover plate 3 is arranged on the front side of the machine base 1 for shielding the test chamber 101;

[0049] Wherein, a towing rope 4 is arranged between the folding cover plate 3 and the separating component, and an auxiliary support component that is movably abutted against the separating component is further arranged in the test chamber 101.

[0050] Furthermore, the tensile test part 2 includes an upper positioning seat 201 and a lower positioning seat 202. The lower positioning seat 202 is fixedly arranged on the bottom inner wall of the test chamber 101. A hydraulic cylinder 203 for driving the upper positioning seat 201 to lift is arranged on the top of the machine base 1. A tensile sensor is arranged between the plunger rod of the hydraulic cylinder 203 and the upper positioning seat 201.

[0051] Specifically, a plurality of automotive parts with the same size to be tested are fixed through the tensile test part 2. The upper positioning seat 201 cooperates with the lower positioning seat 202 to position the automotive parts. Subsequently, the separating component is controlled to act, so that each automotive part is independent and does not interfere with each other during the tensile test, avoiding the influence of the falling off or broken automotive parts on the tensile tests of other surrounding automotive parts. And when the separating component works, it drives the folding cover plate 3 to unfold through the towing rope 4. The arrangement of the folding cover plate 3 effectively shields and covers the test chamber 101, ensuring a safe working environment for personnel. Then, the hydraulic cylinder 203 is controlled to operate, so that the hydraulic cylinder 203 drives the positioned automotive parts to be pulled up through the upper positioning seat 201, and the tensile sensor detects the received tensile force, realizing the simultaneous tensile test of a plurality of automotive parts and ensuring the working efficiency of the tensile test and the accuracy of the test results.

[0052] Example 2: Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6, A tensile testing machine for automotive parts. On the basis of Embodiment 1, further, the upper positioning seat 201 and the lower positioning seat 202 have the same structure, both including a U-shaped plate 204, a screw rod 2041 threadedly connected to both ends of the U-shaped plate 204, and a knob 2042 and a clamping plate 2043 provided at both ends of the screw rod 2041. The clamping plate 2043 is slidably connected to the U-shaped plate 204.

[0053] Specifically, when the upper positioning seat 201 and the lower positioning seat 202 fix the automotive parts, by rotating the knob 2042, the knob 2042 drives the screw rod 2041 to rotate relative to the U-shaped plate 204, so that the screw rod 2041 drives the clamping plate 2043 to rotate on the U-shaped plate 204, and the clamping plates 2043 on both sides of the U-shaped plate 204 move closer to each other, thereby fixing and limiting the automotive parts.

[0054] Embodiment 3: Refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , A tensile testing machine for automotive parts. On the basis of Embodiment 2, further, the separation component includes a rotating rod 5 provided at the top of the machine base 1, a flexible metal sheet 501 wound and connected to the rotating rod 5, a rotating shaft 6 rotatably connected to the bottom of the machine base 1, a first reel 601 provided on the rotating shaft 6, a pull rope 602 wound and connected to the first reel 601 and connected to the end of the flexible metal sheet 501, and a driving motor 603 fixed in the machine base 1 for driving the rotating shaft 6 to rotate. A first chute 502 for the flexible metal sheet 501 to slide is provided on the inner wall of the test chamber 101.

[0055] Further, the separation component further includes a threaded rod 7 rotatably connected in the machine base 1, and an upper bevel gear 701 and a lower bevel gear 702 fixed at both ends of the threaded rod 7. A driving bevel gear 604 meshing with the lower bevel gear 702 is provided on the rotating shaft 6, and a driven bevel gear 503 meshing with the upper bevel gear 701 is provided on the rotating rod 5.

[0056] Specifically, when the separation component works, control the driving motor 603 to operate, the output shaft of the driving motor 603 drives the rotating shaft 6 to rotate, and when the rotating shaft 6 rotates, the first reel 601 rotates;

[0057] When the rotating shaft 6 drives the first reel 601 to rotate, the pulling rope 602 is wound up. The driving bevel gear 604 on the rotating shaft 6 meshes with the lower bevel gear 702 on the threaded rod 7 for transmission. The lower bevel gear 702 drives the upper bevel gear 701 through the threaded rod 7 to mesh with the driven bevel gear 503 on the rotating rod 5 for transmission, so that the rotating rod 5 rotates and cooperates with the pulling rope 602 to pull down the flexible metal sheet 501. The flexible metal sheet 501 moves down along the second chute 8 on one side of the test chamber 101, so that the flexible metal sheet 501 separates two adjacent tensile test parts 2;

[0058] By winding up the flexible metal sheet 501 on the top of the machine base 1 when not in use, it is convenient to install and fix the auto parts, ensure the operation space during the positioning of the auto parts, and avoid the fixed setting of the separating components between two adjacent tensile test parts 2, which leads to a narrow space around the tensile test part 2 and difficult operation, increasing the difficulty of the staff in performing the tensile test on the auto parts, thereby improving the working efficiency of the tensile test of the auto parts.

[0059] Embodiment 4: Refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 6 On the basis of Embodiment 3, further, a second chute 8 is formed on the machine base 1. The folding cover plate 3 includes a first slider 301 fixed in the second chute 8, a third slider 303 slidably connected in the second chute 8, and a plurality of second sliders 302 slidably connected between the first slider 301 and the third slider 303. Two hinge plates 304 are movably hinged between the first slider 301 and the second slider 302, between two adjacent second sliders 302, and between the second slider 302 and the third slider 303.

[0060] Further, a double-line reel 9 is arranged on the rotating shaft 6. The towing rope 4 is wound around the double-line reel 9 and connected to the third slider 303. The towing rope 4 includes a first rope body 401 connected to the upper side of the third slider 303 and a second rope body 402 connected to the lower side of the third slider 303.

[0061] Specifically, by controlling the operation of the driving motor 603, the output shaft of the driving motor 603 drives the rotating shaft 6 to rotate. When the rotating shaft 6 rotates, the double-line reel 9 rotates. The double-line reel 9 winds up the second rope body 402 of the towing rope 4 and releases the first rope body 401, so that the third slider 303 in the second chute 8 moves down. The third slider 303 drives the second slider 302 to move down in the second chute 8 through the hinge plate 304, so that a plurality of hinge plates 304 are in the same plane and block the test chamber 101. On the one hand, it reduces the probability that the materials inside the test chamber 101 fly out of the test chamber 101 during the tensile test, facilitating the recovery of the materials. On the other hand, it ensures a safe working environment for the personnel.

[0062] Example 5: Refer to Figure 1 , Figure 2 and Figure 4 , a tensile testing machine for automotive parts. On the basis of Example 4, further, a limiting block 10 is fixedly arranged on the articulated plate body 304, and a limiting groove 1001 into which the flexible metal sheet 501 is inserted is formed on the limiting block 10.

[0063] Specifically, when the double-line reel 9 winds the second rope body 402 of the traction rope 4 and releases the first rope body 401, the third slider 303 in the second chute 8 moves downward. The third slider 303 drives the second slider 302 to move downward in the second chute 8 through the articulated plate body 304, so that a plurality of articulated plate bodies 304 are in the same plane and block the test chamber 101. When the articulated plate body 304 is horizontally placed, the limiting block 10 arranged on the upper side thereof is clamped with the flexible metal sheet 501 to limit one end of the flexible metal sheet 501 away from the first chute 502, which is convenient for improving the stability of the side of the flexible metal sheet 501 away from the first chute 502 and enhancing the separation and blocking stability of the flexible metal sheet 501.

[0064] Example 6: Refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 10 and Figure 11 , a tensile testing machine for automotive parts. On the basis of Example 5, further, the auxiliary support assembly includes a receiving groove 11 formed on the inner wall of the test chamber 101, a plurality of swing rods 111 rotatably connected in the receiving groove 11 through a first pin shaft, an upper blocking rod 112 rotatably connected to the upper side of the swing rod 111 through a second pin shaft, and a lower blocking rod 113 rotatably connected to the lower side of the swing rod 111 through a third pin shaft. A clamping groove 1121 matched with the lower blocking rod 113 is formed on the upper blocking rod 112. Torsion springs are sleeved on both the first pin shaft and the second pin shaft. A moving pressing plate 12 that movably abuts against the end of the swing rod 111 is threadedly arranged on the threaded rod 7, and the moving pressing plate 12 slides in the machine base 1.

[0065] Specifically, when the separating component works and the threaded rod 7 rotates, the moving pressure plate 12 threadedly connected thereto moves upward. The moving pressure plate 12 no longer abuts against one end of the swing rod 111. The swing rod 111 rotates downward under the action of the torsion spring at the first pin shaft. After the swing rod 111 no longer abuts against the inner wall of the receiving groove 11, the upper stop rod 112 on the upper side of the swing rod 111 quickly flips and resets under the action of the torsion spring at the second pin shaft, while the lower stop rod 113 on the lower side of the swing rod 111 automatically droops and flips under its own gravity. The drooping and flipping lower stop rod 113 is clamped with the upper stop rod 112 on the lower swing rod 111, and the flipped and reset upper stop rod 112 is clamped with the drooping lower stop rod 113 at the upper swing rod 111, so that the swing rod 111 cooperates with the upper stop rod 112 and the lower stop rod 113 after clamping to protect the flexible metal sheet 501, enhance the structural stability of the flexible metal sheet 501, avoid excessive impact on the flexible metal sheet 501 when the automotive tensile fitting is stressed and cracked, and ensure the service life of the equipment structure.

[0066] The present invention also discloses a usage method of a tensile testing machine for automotive fittings, including the following steps:

[0067] S1: Fix a plurality of automotive fittings with the same size to be tested through the tensile testing part 2, and the upper positioning seat 201 cooperates with the lower positioning seat 202 to position the automotive fittings;

[0068] S2: Subsequently, control the driving motor 603 to operate. The output shaft of the driving motor 603 drives the rotating shaft 6 to rotate. When the rotating shaft 6 rotates, the first reel 601 and the double-line reel 9 rotate;

[0069] When the rotating shaft 6 drives the first reel 601 to rotate, the pulling rope 602 is wound up. The driving bevel gear 604 on the rotating shaft 6 meshes with the lower bevel gear 702 on the threaded rod 7 for transmission. The lower bevel gear 702 drives the upper bevel gear 701 through the threaded rod 7 to mesh with the driven bevel gear 503 on the rotating rod 5 for transmission, so that the rotating rod 5 rotates and cooperates with the pulling rope 602 to pull down the flexible metal sheet 501. The flexible metal sheet 501 moves down along the second chute 8 on one side of the test chamber 101, so that the flexible metal sheet 501 separates two adjacent tensile testing parts 2;

[0070] The double-line reel 9 winds up the second rope body 402 of the towing rope 4 and releases the first rope body 401, so that the third slider 303 in the second chute 8 moves down. The third slider 303 drives the second slider 302 to move down in the second chute 8 through the hinged plate body 304, so that a plurality of hinged plate bodies 304 are in the same plane and block the test chamber 101. When the hinged plate body 304 is horizontally placed, the limiting block 10 provided on the upper side thereof is clamped with the flexible metal sheet 501 to limit one end of the flexible metal sheet 501 away from the first chute 502;

[0071] S3: When the threaded rod 7 rotates, the moving pressure plate 12 threadedly connected thereto moves upward. The moving pressure plate 12 no longer abuts against one end of the swing rod 111. The swing rod 111 rotates downward under the action of the torsion spring at the first pin shaft. After the swing rod 111 no longer abuts against the inner wall of the receiving groove 11, the upper stop rod 112 on the upper side of the swing rod 111 quickly flips and resets under the action of the torsion spring at the second pin shaft, while the lower stop rod 113 on the lower side of the swing rod 111 automatically droops and flips under its own gravity. The drooping and flipping lower stop rod 113 is clamped with the upper stop rod 112 on the lower side swing rod 111, and the flipped and reset upper stop rod 112 is clamped with the drooping lower stop rod 113 at the upper side swing rod 111, so that the swing rod 111 cooperates with the upper stop rod 112 and the lower stop rod 113 after clamping to protect the flexible metal sheet 501;

[0072] S4: Finally, control the operation of the hydraulic cylinder 203, so that the hydraulic cylinder 203 drives the automotive parts in positioning to be pulled upward through the upper positioning seat 201, and the tension sensor detects the received tension.

[0073] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A tensile testing machine for automobile parts, comprising a machine base (1), wherein a test chamber (101) for tensile testing is provided on the machine base (1), wherein: Also includes: A tensile testing part (2), wherein a plurality of the tensile testing parts (2) are arranged equidistantly in the test chamber (101) and are used to perform a tensile test on an automobile part; A partition assembly, wherein the partition assembly is provided in a plurality of groups, and each group of the partition assembly is provided between two adjacent tensile test parts (2); and A folding cover plate (3), the folding cover plate (3) being arranged on the front side of the machine base (1) and used for shielding the test cavity (101); A traction rope (4) is provided between the folding cover plate (3) and the partition assembly, and an auxiliary support assembly that is movably opposed to the partition assembly is also provided in the test chamber (101); The partition assembly comprises a rotating rod (5) arranged at the top of the machine base (1), a flexible metal sheet (501) wound around the rotating rod (5), a rotating shaft (6) rotatably connected to the bottom of the machine base (1), a first reel (601) arranged on the rotating shaft (6), a pull rope (602) wound around the first reel (601) and connected to the end of the flexible metal sheet (501), and a driving motor (603) fixed in the machine base (1) for driving the rotating shaft (6) to rotate, and the inner wall of the test chamber (101) is provided with a first sliding groove (502) for the flexible metal sheet (501) to slide; The partition assembly further comprises a threaded rod (7) rotatably connected to the machine base (1), and an upper bevel gear (701) and a lower bevel gear (702) fixedly arranged at both ends of the threaded rod (7); a driving bevel gear (604) meshing with the lower bevel gear (702) is arranged on the rotating shaft (6); and a driven bevel gear (503) meshing with the upper bevel gear (701) is arranged on the rotating rod (5); The auxiliary support assembly comprises a receiving groove (11) provided on the inner wall of the test chamber (101), a plurality of swinging rods (111) rotatably connected to the receiving groove (11) via a first pin shaft, an upper stop rod (112) rotatably connected to the upper side of the swinging rod (111) via a second pin shaft, and a lower stop rod (113) rotatably connected to the lower side of the swinging rod (111) via a third pin shaft, the upper stop rod (112) being provided with a slot (1121) matching with the lower stop rod (113), the first pin shaft and the second pin shaft being sleeved with a torsion spring, and a movable pressure plate (12) being threadedly provided on the threaded rod (7) and movably abutting against the end of the swinging rod (111), and the movable pressure plate (12) slidingly sliding in the machine base (1).

2. A tensile testing machine for automobile parts according to claim 1, characterized in that: The tension test part (2) comprises an upper positioning seat (201) and a lower positioning seat (202); the lower positioning seat (202) is fixedly mounted on the bottom inner wall of the test chamber (101); a hydraulic cylinder (203) for driving the upper positioning seat (201) to rise and fall is arranged on the top of the machine base (1); a tension sensor is arranged between the plunger rod of the hydraulic cylinder (203) and the upper positioning seat (201).

3. A tensile testing machine for automobile parts according to claim 2, characterized in that: The upper positioning seat (201) and the lower positioning seat (202) have the same structure, and both comprise a U-shaped plate (204), a screw rod (2041) threadedly connected to both ends of the U-shaped plate (204), and a knob (2042) and a clamping plate (2043) arranged at both ends of the screw rod (2041), wherein the clamping plate (2043) is slidably connected to the U-shaped plate (204).

4. A tensile testing machine for automobile parts according to claim 3, characterized in that: The base (1) is provided with a second slide groove (8), the folding cover (3) comprises a first slider (301) fixed in the second slide groove (8), a third slider (303) slidably connected in the second slide groove (8), and a plurality of second sliders (302) slidably connected between the first slider (301) and the third slider (303), and two hinged plate bodies (304) are movably hinged between the first slider (301) and the second slider (302), between two adjacent second sliders (302), and between the second slider (302) and the third slider (303).

5. A tensile testing machine for automobile parts according to claim 4, characterized in that: A double-line drum (9) is provided on the rotating shaft (6), the traction rope (4) is wound around and connected to the double-line drum (9) and is connected to the third slider (303), and the traction rope (4) comprises a first rope body (401) connected to the upper side of the third slider (303) and a second rope body (402) connected to the lower side of the third slider (303).

6. A tensile testing machine for automobile parts according to claim 5, characterized in that: A limiting block (10) is fixedly arranged on the hinged plate body (304), and a limiting groove (1001) for plugging into the flexible metal sheet (501) is provided on the limiting block (10).

7. A method for using the tensile testing machine for automobile parts according to claim 6, characterized in that: The following steps are involved: S1: a plurality of automobile parts of the same size to be tested are fixed through the tensile testing part (2), and the upper positioning seat (201) cooperates with the lower positioning seat (202) to position the automobile parts; S2: Then, the driving motor (603) is controlled to operate, and the output shaft of the driving motor (603) drives the rotating shaft (6) to rotate, and when the rotating shaft (6) rotates, the first reel (601) and the double-line reel (9) are rotated; When the rotating shaft (6) drives the first reel (601) to rotate, the pull rope (602) is reeled in, the active bevel gear (604) on the rotating shaft (6) meshes with the lower bevel gear (702) on the threaded rod (7) for transmission, and the lower bevel gear (702) drives the upper bevel gear (701) through the threaded rod (7) to mesh with the driven bevel gear (503) on the rotating rod (5) for transmission, so that the rotating rod (5) rotates and cooperates with the pull rope (602) to pull down the flexible metal sheet (501), and the flexible metal sheet (501) moves down along the second slide groove (8) on one side of the test chamber (101), so that the flexible metal sheet (501) separates two adjacent tension test parts (2); The double-wire drum (9) reels the second rope body (402) of the traction rope (4) and releases the first rope body (401), so that the third slider (303) in the second slide groove (8) moves downward, and the third slider (303) drives the second slider (302) to move downward in the second slide groove (8) through the hinged plate body (304), so that the multiple hinged plate bodies (304) are in the same plane and shield the test cavity (101), and when the hinged plate body (304) is placed horizontally, the limit block (10) provided on the upper side thereof is engaged with the flexible metal sheet (501), so as to limit the end of the flexible metal sheet (501) away from the first slide groove (502); S3: When the threaded rod (7) rotates, the movable pressure plate (12) threadedly connected thereto moves upward, and the movable pressure plate (12) no longer contacts one end of the swing rod (111). The swing rod (111) rotates downward under the action of the torsion spring at the first pin shaft. After the swing rod (111) no longer contacts the inner wall of the receiving groove (11), the upper stopper (112) on the upper side of the swing rod (111) quickly flips and resets under the action of the torsion spring at the second pin shaft, and the swing rod (111) is rotated downward. 1) The lower blocking rod (113) on the lower side automatically droops and flips under the action of its own gravity, the drooping and flipping lower blocking rod (113) is clamped with the upper blocking rod (112) on the lower swing rod (111), and the flipped and reset upper blocking rod (112) is clamped with the drooping lower blocking rod (113) on the upper swing rod (111), so that the swing rod (111) cooperates with the clamped upper blocking rod (112) and the lower blocking rod (113) to protect the flexible metal sheet (501); S4: Finally, the hydraulic cylinder (203) is controlled to operate, so that the hydraulic cylinder (203) drives the automobile accessory being positioned to be pulled upward through the upper positioning seat (201), and the tension sensor detects the tension received.

Images