A bridge steel bending test equipment

Abstract

A bridge steel bending test equipment relates to the field of bridge detection technology, including a test bench, a bending core unit, a positive bending unit, a clamping tube unit, and a reverse bending unit. A power transmission system for providing horizontal rotation power is provided in the test bench. The bending core unit is arranged on the test bench, including a plurality of rotating motors arranged in an array above the test bench, and an arc-shaped bending core sleeve is provided below the output shaft thereof, and an arc groove matching the steel is provided on the outer peripheral side of the bending core sleeve. The positive bending unit includes a bending assembly also arranged on the test bench and a loader arranged on one side of the test bench. The clamping tube unit is arranged at one end of the test bench and is used to fix one end of the steel. The reverse bending unit is also arranged on the test bench and includes a twelfth linear mechanism, and a top block is provided at one end of the output shaft thereof. The bridge steel bending test equipment of the present invention can automatically switch the bending core sleeve, the rotating sleeve, and the clamping tube seat according to the steel specifications, so as to improve the test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bridge detection, and in particular to a bridge steel bending test device. Background Art

[0002] In bridge construction, many strips of steel are needed, including steel bars or steel pipes. The ability of steel to withstand bending loads can be determined by performing a bending test. Since the bridge will undergo elastic deformation upward when it resonates under downward force, the steel needs to be bent both forward and backward during the bending test. According to national standards, such as the "Test Methods for Steel for Reinforced Concrete", it is required to bend the steel forward 90° and backward 20°. After bending, inspect the outer surface. If there are no visible cracks, it should be assessed as qualified.

[0003] Although the steel bending test machine used in the prior art generally has the function of bending steel forward and backward, when testing steels of different radii, it is necessary to manually replace the bending core sleeve, rotating sleeve, pipe holder and other components, which requires a large amount of manual operation and low work efficiency. In addition, the current steel bending test machine also requires manual replacement of the clamp between the forward and reverse bending steps of the steel, which is more troublesome to operate. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides a bridge steel bending test equipment which can automatically switch the bending core sleeve, rotating sleeve and pipe holder according to the steel specifications, thereby improving the test efficiency.

[0005] In order to achieve the purpose of the present invention, the following technologies are proposed:

[0006] A bridge steel bending test device, comprising:

[0007] A test bench having a power transmission system for providing horizontal plane rotation power;

[0008] The bending core unit is arranged on the test bench. The bending core unit includes a plurality of rotating motors arranged in an array above the test bench. An arc-shaped bending core sleeve is arranged below the output shaft of the rotating motor. An arc groove matching the steel material is opened on the outer peripheral side of the bending core sleeve.

[0009] The positive bending unit includes a bending assembly arranged on the test bench and a loader arranged on one side of the test bench; the bending assembly includes a first linear mechanism arranged on the outer side of the upper end of the output shaft of the power transmission system, a sliding end of which is provided with a vertically arranged second linear mechanism, and a sliding rod is provided at the lower end of the output shaft of the second linear mechanism; the loader includes a sliding frame, a storage mechanism is provided on one side of the sliding frame, a plurality of rotating sleeves matching the steel are provided in the storage mechanism, a third linear mechanism is provided at the other end of the sliding frame, a first U-shaped plate is provided at one end of the output shaft thereof, a sixth linear mechanism is provided on one side of the third linear mechanism, and a second U-shaped plate is provided at one end of the output shaft of the sixth linear mechanism;

[0010] The pipe clamping unit is located at one end of the test bench and is used to fix one end of the steel material;

[0011] The anti-bending unit is arranged on the test bench and comprises a twelfth linear mechanism, and a top block is arranged at one end of the output shaft thereof.

[0012] Furthermore, an inspection door is provided at one end of the test bench, and a sleeve seat is fixed on the test bench and is sleeved on the upper end of the output shaft of the power transmission system. The test bench is provided with a plurality of first arc-shaped slide grooves and a plurality of second arc-shaped slide grooves. A slider that is slidably matched with the second slide groove is provided at the lower end of the bending core sleeve, and the slide rod is slidably matched with the first slide groove. The sleeve seat, each first slide groove, and each second slide groove are all coaxial, and the test bench is also provided with a plurality of groups of mounting holes.

[0013] Furthermore, a plurality of storage grooves are provided on one side of the storage mechanism, a spring is provided on the inner end wall of the storage groove, a push plate is provided at one end of the spring and slides in the storage groove, a rotating sleeve is provided in the storage groove, a second through hole is provided on the rotating sleeve which passes through the upper and lower ends and matches the slide rod, a plurality of vertically arranged fourth linear mechanisms are provided on the other side of the storage mechanism, a fifth linear mechanism is provided on the upper end of the output shaft, and a limit plate is provided at one end of the output shaft of the fifth linear mechanism.

[0014] Furthermore, the pipe clamping unit includes a vertically arranged eighth linear mechanism, a ninth linear mechanism is provided at one end of its output shaft, a tenth linear mechanism is provided at one end of the output shaft of the ninth linear mechanism, and a plurality of vertical drag rods are provided on one side of the sliding end of the tenth linear mechanism. The pipe clamping unit also includes a placement mechanism arranged on the test bench, a plurality of placement grooves are provided on one side of the placement mechanism, and a pipe clamping seat is provided in the placement groove.

[0015] Furthermore, a pipe groove matching the lower portion of the outer circumference of the steel material is provided through the side of the pipe holder, an axial hole and a plurality of third through holes matching the mounting holes are provided on the upper end face of the pipe holder, and an eleventh straight line mechanism vertically arranged is provided above the pipe holder, whose output shaft passes through the axial hole, and an upper pressure block matching the upper portion of the outer circumference of the steel material is provided at the lower end of the output shaft of the eleventh straight line mechanism.

[0016] The beneficial effects of this technical solution are:

[0017] 1. The bending core unit can automatically rotate the bending core sleeve that matches the steel to the working position, and all the bending core sleeves are pre-placed on the bending core unit without affecting other components; the loader can automatically move the rotating sleeve that matches the steel to the test bench, and the storage mechanism can store the rotating sleeve; the rotating sleeve loaded by the loader to the test bench can be limited by the bending component, and the steel can be bent by the bending component; the clamping tube unit can automatically load the clamping tube holder that matches the steel, and can place it. The equipment can realize the automatic replacement of the bending core sleeve, rotating sleeve, and clamping tube holder, which can improve the test efficiency and reduce the workload of personnel.

[0018] 2. The steps of forward bending and reverse bending of steel can also be switched automatically without manual switching. During the whole test process, the staff only need to put in and take out the steel, which can reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall three-dimensional diagram of the embodiment of the present application is shown. Figure 1 .

[0020] Figure 2 The overall three-dimensional diagram of the embodiment of the present application is shown. Figure 2 , and the first bracket and the second bracket are not displayed.

[0021] Figure 3 The overall three-dimensional diagram of the embodiment of the present application is shown. Figure 3 , and the first bracket and the second bracket are not displayed.

[0022] Figure 4 The partial three-dimensional diagram of the embodiment of the present application after the steel is placed Figure 1 .

[0023] Figure 5 The partial three-dimensional diagram of the embodiment of the present application after the steel is placed Figure 2 .

[0024] Figure 6 A three-dimensional diagram of a test bench according to an embodiment of the present application is shown.

[0025] Figure 7 A three-dimensional diagram of a bending core unit according to an embodiment of the present application is shown.

[0026] Figure 8 Shown are stereoscopic views of multiple curved core sleeves according to embodiments of the present application.

[0027] Fig. 9 A three-dimensional view of a single curved core sleeve according to an embodiment of the present application is shown.

[0028] Fig.10 A three-dimensional view of a bending assembly according to an embodiment of the present application is shown.

[0029] Fig.11 A three-dimensional view of a pipe clamping unit according to an embodiment of the present application is shown.

[0030] Fig.12 A three-dimensional diagram of the placement mechanism of an embodiment of the present application and three card tube sockets placed thereon is shown.

[0031] Fig.13 An exploded view of a card tube socket according to an embodiment of the present application is shown.

[0032] Fig.14 A partial stereoscopic view of a pipe clamping unit according to an embodiment of the present application is shown.

[0033] Fig.15A stereoscopic view of a loader according to an embodiment of the present application is shown.

[0034] Fig.16 The loader of the present application embodiment is shown in a partial stereoscopic view. Figure 1 .

[0035] Fig.17 The loader of the present application embodiment is shown in a partial stereoscopic view. Figure 2 .

[0036] Fig.18 The loader of the present application embodiment is shown in a partial stereoscopic view. Figure 3 .

[0037] Fig.19 A stereoscopic view of multiple rotating sleeves according to an embodiment of the present application is shown.

[0038] Fig. 20 An exploded view of the parts required for performing a bending test on a single steel material according to an embodiment of the present application is shown.

[0039] Markings in the figure: test bench-1, inspection door-11, first bracket-12, second bracket-13, sleeve-14, first slide groove-15, second slide groove-16, mounting hole-17, bending core unit-2, rotating motor-21, cross bar-22, vertical plate-23, bending core sleeve-24, slide block-25, arc groove-26, bending component-3, rotating plate-31, first through hole-32, first linear mechanism-33, second linear mechanism-34, slide bar-35, clamping tube unit-4, eighth linear mechanism-41, ninth linear mechanism-42, tenth linear mechanism-43, mounting block-431, horizontal drag rod-432, vertical drag rod-44, placement mechanism-45, placement groove-451, clamping Tube seat -46, tube groove -461, shaft hole -462, third through hole -463, eleventh straight line mechanism -47, upper pressure block -48, loader -5, slide frame -51, end opening -511, through hole -512, storage mechanism -52, storage groove -521, spring -522, push plate -523, rotating sleeve -53, second through hole -531, third straight line mechanism -54, first U-shaped plate -541, fourth straight line mechanism -55, fifth straight line mechanism -551, limit plate -552, sixth straight line mechanism -56, seventh straight line mechanism -57, horizontal plate -571, second U-shaped plate -58, anti-bending unit -6, twelfth straight line mechanism -61, top block -62, steel -7. DETAILED DESCRIPTION

[0040] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0041] like Figure 1 to Figure 20 The bridge steel bending test equipment shown includes a test bench 1, a bending core unit 2, a positive bending unit, a pipe clamping unit 4, and a reverse bending unit 6.

[0042] like Figure 1 to Figure 6 , Fig. 20 As shown, the test bench 1 is provided with a power transmission system for providing horizontal rotational power inside, specifically, the power transmission system is a cycloidal pinwheel reducer, an inspection door 11 for inspecting the power transmission system is provided at one end of the test bench 1, a first bracket 12 is provided on the test bench 1, a second bracket 13 is provided at one end of the test bench 1, a sleeve 14 mounted on the output shaft of the power transmission system is also fixed on the test bench 1, a plurality of first circular slide grooves 15 and a plurality of second circular slide grooves 16 are provided on the test bench 1, the sleeve 14, each first slide groove 15, and each second slide groove 16 are coaxial, and a plurality of mounting holes 17 are also provided on the test bench 1.

[0043] like Figure 1 to Figure 6 , Figure 7~Figure 9 , Fig. 20 As shown, the bending core unit 2 is arranged on the test bench 1, and is used to support one side of the outer periphery of the steel material 7 when the steel material 7 is bent. The bending core unit 2 includes a plurality of rotating motors 21 arranged in an array along the vertical direction above the test bench 1. Specifically, each rotating motor 21 is arranged at one end of the first bracket 12, and a cross bar 22 is arranged at the lower end of the output shaft of the rotating motor 21. A vertical plate 23 is extended downward at one end of the cross bar 22, and an arc-shaped bending core sleeve 24 is arranged at the lower end of the vertical plate 23. The sleeve seat 14 and the output shaft of each rotating motor 21 are connected to each other. The output shaft and each bending core sleeve 24 are coaxial, and a slider 25 is provided at the lower end of the bending core sleeve 24 for slidingly fitting in the second slide groove 16. Specifically, the slider 25 is close to one end of the lower end surface of the bending core sleeve 24, and an arc groove 26 matching the shape of the outer peripheral side of the steel 7 is provided on the outer peripheral side of the bending core sleeve 24. The arc groove 26 on the outer peripheral side of each bending core sleeve 24 has a different shape, so that steels 7 of different radii can be matched. Preferably, an arc groove 26 that is adapted to a larger steel 7 is provided on a bending core sleeve 24 with a larger radius.

[0044] The positive bending unit is used to bend the steel material 7 by applying pressure along the other side of the steel material 7 when the steel material 7 is positively bent, and includes a bending assembly 3 also arranged on the test bench 1 and a loader 5 arranged on one side of the test bench 1 .

[0045] like Figure 1~Figure 5 , Fig.10 , Fig. 20 As shown, the bending assembly 3 includes a rotating plate 31 arranged at the upper end of the output shaft of the power transmission system, and the rotating plate 31 is located on the sleeve 14, and a plurality of first through holes 32 are opened on the rotating plate 31. A first linear mechanism 33 is provided on the rotating plate 31, and a second linear mechanism 34 is vertically arranged at its sliding end. A sliding rod 35 is provided at the lower end of the output shaft of the second linear mechanism 34, which passes through the first through hole 32 and slides in the first slide groove 15.

[0046] like Figure 1~Figure 5 , Figure 15~Figure 19 , Fig. 20As shown, the loader 5 includes a first bracket and a second bracket which are arranged side by side on the upper part of one side of the test bench 1, a slide frame 51 is provided on the first bracket, end openings 511 are provided at both ends of the slide frame 51, a side opening is provided on one side of the slide frame 51, and a through opening 512 extending to an end thereof close to the test bench 1 is provided on the other side of the slide frame 51, a storage mechanism 52 is extended from one side of the slide frame 51 with the side opening, a side surface of the storage mechanism 52 close to the slide frame 51 is provided with a plurality of storage grooves 521 inwardly, a spring 522 is provided on the inner end wall of the storage groove 521, and the spring 522 is provided on the inner end wall of the storage groove 521. 2 is provided with a push plate 523 that is slidably matched in the storage slot 521. Different specifications of rotating sleeves 53 are stored in each storage slot 521 to match steel materials 7 of different radius. Preferably, the rotating sleeve 53 can be sandwiched between the rotating plate 31 and the test bench 1 during operation to enhance the stability of the rotating sleeve 53 when rotating. The rotating sleeve 53 is provided with a second through hole 531 that passes through the upper and lower ends and matches the slide rod 35. The rotating sleeve 53 can be pushed into the slide frame 51 through the push plate 523. The other end of the slide frame 51 is provided with a third linear mechanism 54 that is also on the first bracket, and one end of its output shaft A first U-shaped plate 541 is provided which is slidably matched with the slide frame 51 and can be extended to the test bench 1. A plurality of fourth linear mechanisms 55 are vertically arranged on the other side of the storage mechanism 52. A fifth linear mechanism 551 is provided on the upper end of the output shaft thereof. A limit plate 552 which extends downward and matches the storage slot 521 is provided on one end of the output shaft of the fifth linear mechanism 551. When the limit plate 552 is lowered, all the rotating sleeves 53 which are not needed to be used can be blocked outside the slide frame 51. A sixth linear mechanism 56 is provided on one side of the third linear mechanism 54, and the sixth linear mechanism 56 is larger than the third linear mechanism. 54 is closer to the test bench 1, the sixth linear mechanism 56 is arranged on the second bracket, the seventh linear mechanism 57 is arranged at one end of the output shaft of the sixth linear mechanism 56, the seventh linear mechanism 57 is arranged at one end of the output shaft of the seventh linear mechanism 57, a transverse plate 571 matching with the through opening 512 is arranged at one end of the transverse plate 571 which can also be slidably matched with the slide frame 51 is arranged at one end, and the second U-shaped plate 58 is symmetrically arranged with the first U-shaped plate 541 when in the slide frame 51, and after the second U-shaped plate 58 retracts the rotating sleeve 53 after the work is completed into the slide frame 51, the rotating sleeve 53 can be put back into the storage slot 521 through the fifth linear mechanism 551.

[0047] like Figure 1~Figure 5 , Figure 11~Figure 14 , Fig. 20As shown, the clamping tube unit 4 is arranged at one end of the test bench 1 and is used to fix one end of the steel material 7. The clamping tube unit 4 includes an eighth linear mechanism 41 arranged at one end of the second bracket 13 and arranged vertically, and a ninth linear mechanism 42 is arranged at one end of the output shaft of the eighth linear mechanism 41, and a tenth linear mechanism 43 is arranged at one end of the output shaft of the ninth linear mechanism 42. A mounting block 431 is arranged at the sliding end of the tenth linear mechanism 43, and a plurality of horizontal drag rods 432 are arranged on one side thereof. A plurality of vertical drag rods 44 matching the mounting holes 17 are arranged on the lower end surface of one end of the horizontal drag rod 432. The clamping tube unit 4 also includes a placement mechanism 45 arranged on the test bench 1, and the placement mechanism 45 is close to the eighth linear mechanism 41. A plurality of placement grooves 451 are provided inwardly on one side of the linear mechanism 41, and different specifications of pipe holders 46 are placed in the placement grooves 451 for matching steel materials 7 of different radii. A pipe groove 461 matching the lower part of the outer circumference of the steel material 7 is provided through the side of the pipe holder 46, and an axial hole 462 and a plurality of third through holes 463 matching the mounting holes 17 are provided on the upper end surface of the pipe holder 46. An eleventh linear mechanism 47 is vertically provided above the pipe holder 46, and its output shaft passes through the axial hole 462. An upper pressing block 48 matching the upper part of the outer circumference of the steel material 7 is provided at the lower end of the output shaft of the eleventh linear mechanism 47. Specifically, Fig.12 The inner bottom surface of the placement groove 451 is actually at the same horizontal plane as the upper end surface of the test bench 1, and this figure is only for convenience of representation.

[0048] like Figure 1~Figure 5 , Fig. 20 As shown, the reverse bending unit 6 is also arranged on the test bench 1, and includes a twelfth linear mechanism 61, and a top block 62 is arranged at one end of its output shaft. Specifically, Figure 5 As shown, the twelfth linear mechanism 61 is parallel to the length direction of the steel material 7 in the initial state when it is loaded into the test equipment. After the steel material 7 is bent 90°, the rotating sleeve 53 is used to support the outside of the steel material 7, and the top block 62 is pushed by the twelfth linear mechanism 61 to bend the steel material 7 in the reverse direction.

[0049] In this embodiment, the first linear mechanism 33 and the tenth linear mechanism 43 both adopt rodless linear cylinders, the second linear mechanism 34, the eighth linear mechanism 41, the ninth linear mechanism 42, the eleventh linear mechanism 47, and the twelfth linear mechanism 61 all adopt linear hydraulic cylinders, and the third linear mechanism 54, the fourth linear mechanism 55, the fifth linear mechanism 551, the sixth linear mechanism 56, and the seventh linear mechanism 57 all adopt single-axis linear cylinders.

[0050] Working method:

[0051] First, the specification of the steel material 7 to be tested is determined, and its radius determines the bending core sleeve 24, rotating sleeve 53, and pipe clamping seat 46 to be used.

[0052] The bending core sleeve 24 to be used is rotated to the working position. The specific method is: the rotating motor 21 corresponding to the bending core sleeve 24 controls the rotation of the bending core sleeve 24. When rotating, the slider 25 slides along the second slide groove 16. The bending core sleeve 24 rotates to the working position. Figure 5 After the position shown is reached, the process is completed, and the slider 25 is located at one end of the second chute 16. For other bending core sleeves 24, they need to be rotated to a position where they do not interfere with the working bending core sleeves 24. Specifically, the sliders 25 of these bending core sleeves 24 are located at the other end of the second chute 16.

[0053] The rotating sleeve 53 to be used is loaded in the following specific manner: the rotating sleeve 53 corresponds to a storage slot 521, and the limiting plate 552 is raised through the fourth linear mechanism 55 at one end of the storage slot 521, and the rotating sleeve 53 is pushed into the slide frame 51 by the push plate 523 at one end of the spring 522, and the rotating sleeve 53 is pushed to a predetermined position on the test bench 1 through the first U-shaped plate 541. Due to the U-shape of the first U-shaped plate 541, the rotating sleeve 53 can be prevented from deviating; the rotating sleeve 53 is in place, specifically, the rotating sleeve 53 is above a first slide slot 15, and then, the second linear mechanism 34 is moved through the first linear mechanism 33 to align the slide rod 35 with the predetermined first through hole 32, and the slide rod 35 is sequentially lowered into the first through hole 32, the second through hole 531, and the first slide slot 15 through the second linear mechanism 34.

[0054] In addition, sometimes it is necessary to switch the rotating sleeve 53, so the rotating sleeve 53 on the test bench 1 needs to be put back into the storage mechanism 52. The specific method is: move out the slide rod 35 through the second linear mechanism 34, and the bending core sleeve 24 can be removed to avoid interference, and then push out the seventh linear mechanism 57 through the sixth linear mechanism 56, and then push out the second U-shaped plate 58 through the seventh linear mechanism 57, pull back the second U-shaped plate 58 through the sixth linear mechanism 56, move the rotating sleeve 53 back to the predetermined position on the slide frame 51, and then remove the second U-shaped plate 58, and pull the rotating sleeve 53 back to the storage slot 521 through the fourth linear mechanism 55 and the fifth linear mechanism 551, and keep the limit plate 552 stationary, compress the spring 522, and lock the rotating sleeve 53.

[0055] After the bending core sleeve 24 and the rotating sleeve 53 are configured, the card tube seat 46 to be used is loaded. The specific method is: the eighth linear mechanism 41, the ninth linear mechanism 42, and the tenth linear mechanism 43 are used to control each vertical drag rod 44 to be inserted into the third through hole 463 on the card tube seat 46 to be used, and the card tube seat 46 is dragged out from the placement groove 451, and then moved to a group of mounting holes 17 at a predetermined position. Specifically, a group of mounting holes 17 includes four mounting holes 17, and then the eighth linear mechanism 41 is used to further press down the vertical drag rod 44, and the vertical drag rod 44 is pressed into the mounting hole 17 to fix the card tube seat 46. By analogy, the unused card tube seat 46 can be put back into the placement groove 451.

[0056] After the bending core sleeve 24, the rotating sleeve 53, and the clamping seat 46 are all in place, the positive bending begins. The specific method is: the steel 7 is inserted into the clamping seat 46, and then passes through the rotating sleeve 53 and the position between the arc groove 26 of the bending core sleeve 24, and then the upper pressing block 48 is pressed down by the eleventh straight line mechanism 47 to fix the steel 7. At this time, the equipment and the steel 7 are in the following Figure 4~Figure 5 The state shown is then started, and the power transmission system in the test bench 1 is driven to drive the slide rod 35 through the rotating plate 31, and then drive the rotating sleeve 53 to move along the circumference to bend the steel 7. After bending 90° as required, a part of the steel 7 is perpendicular to the initial direction and is located at one end of the reverse bending unit 6.

[0057] Then the reverse bending starts. Specifically, the bending core sleeve 24 can be removed first, and the rotating sleeve 53 can be moved back along the circumference to a predetermined angle, which can be 45°. Then, the top block 62 is pushed by the twelfth linear mechanism 61, and the steel material 7 is reversed by 20° before stopping.

[0058] Inspect the outer surface; if there are no visible cracks, it should be assessed as qualified.

[0059] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A bridge steel bending test equipment, characterized in that: include: A test bench (1) is provided with a power transmission system for providing horizontal rotational power. An inspection door (11) is provided at one end of the test bench (1). A sleeve (14) sleeved on the upper end of an output shaft of the power transmission system is fixed to the test bench (1). A plurality of first arc-shaped slide grooves (15) and a plurality of second arc-shaped slide grooves (16) are provided on the test bench (1). The sleeve (14), each first slide groove (15), and each second slide groove (16) are coaxial. A plurality of groups of mounting holes (17) are also provided on the test bench (1); The bending core unit (2) is arranged on the test bench (1), and comprises a plurality of rotating motors (21) arranged in an array above the test bench (1), wherein an arc-shaped bending core sleeve (24) is arranged below the output shaft, an arc groove (26) matching the steel material (7) is opened on the outer peripheral side of the bending core sleeve (24), and a sliding block (25) slidably matched with the second sliding groove (16) is arranged at the lower end of the bending core sleeve (24); The positive bending unit comprises a bending assembly (3) arranged on a test bench (1) and a loader (5) arranged on one side of the test bench (1); the bending assembly (3) comprises a first linear mechanism (33) arranged on the outer side of the upper end of the output shaft of the power transmission system, a second linear mechanism (34) arranged vertically at its sliding end, a sliding rod (35) is arranged at the lower end of the output shaft of the second linear mechanism (34), and the sliding rod (35) is slidably matched with the first sliding groove (15); the bending assembly (3) also comprises a first linear mechanism (33) arranged on the outer side of the upper end of the output shaft of the power transmission system The rotating plate (31) is provided with a plurality of first through holes (32), the first linear mechanism (33) is provided on the rotating plate (31), and the slide rod (35) is passed through the first through hole (32); the loader (5) comprises a slide frame (51), a storage mechanism (52) is provided on one side of the slide frame (51), a plurality of rotating sleeves (53) matching with the steel material (7) are provided in the storage mechanism (52), and the other end of the slide frame (51) is provided with a third linear mechanism (54), and one end of the output shaft of the third linear mechanism (54) is provided with a rotation mechanism (53) matching with the slide frame (51). A first U-shaped plate (541) is slidably matched, a sixth linear mechanism (56) is provided on one side of the third linear mechanism (54), a second U-shaped plate (58) is provided on one end of the output shaft of the sixth linear mechanism (56), a plurality of storage grooves (521) are provided on one side of the storage mechanism (52), a spring (522) is provided on the inner end wall of the storage groove (521), a push plate (523) slidably matched in the storage groove (521) is provided on one end of the spring (522), a rotating sleeve (53) is provided in the storage groove (521), and the rotating sleeve A second through hole (531) is provided on the storage mechanism (52) and passes through the upper and lower ends and matches the slide bar (35). A plurality of vertically arranged fourth linear mechanisms (55) are provided on the other side of the storage mechanism (52). A fifth linear mechanism (551) is provided on the upper end of the output shaft thereof. A limiting plate (552) is provided at one end of the output shaft of the fifth linear mechanism (551). A seventh linear mechanism (57) is provided at one end of the output shaft of the sixth linear mechanism (56). A second U-shaped plate (58) is provided at one end of the output shaft of the seventh linear mechanism (57). The pipe clamping unit (4) is arranged at one end of the test bench (1) and is used to fix one end of the steel material (7). The pipe clamping unit (4) comprises an eighth linear mechanism (41) arranged vertically, a ninth linear mechanism (42) being arranged at one end of the output shaft of the eighth linear mechanism (41), a tenth linear mechanism (43) being arranged at one end of the output shaft of the ninth linear mechanism (42), a plurality of vertical drag rods (44) being arranged at one side of the sliding end of the tenth linear mechanism (43), and a placement mechanism (45) being arranged at one side of the placement mechanism (45) and a plurality of placement grooves (451) being arranged in the placement grooves (451), a pipe clamping seat (46) being arranged in the placement grooves (451), and the tenth linear mechanism (43) slidingly ... A mounting block (431) is provided at one end thereof, a plurality of horizontal drag rods (432) are provided on one side thereof, a vertical drag rod (44) is provided on the lower end surface of the horizontal drag rod (432), a pipe groove (461) matching the lower part of the outer peripheral side of the steel material (7) is provided through the side surface of the pipe holder (46), an axial hole (462) and a plurality of third through holes (463) matching the mounting holes (17) are provided on the upper end surface of the pipe holder (46), an eleventh straight line mechanism (47) is provided vertically above the pipe holder (46), an output shaft of which passes through the axial hole (462), and an upper pressing block (48) matching the upper part of the outer peripheral side of the steel material (7) is provided at the lower end of the output shaft of the eleventh straight line mechanism (47); The reverse bending unit (6) is arranged on the test bench (1), and comprises a twelfth linear mechanism (61), one end of the output shaft of which is provided with a top block (62).

2. The bridge steel bending test equipment according to claim 1, characterized in that: A crossbar (22) is provided at the lower end of the output shaft of the rotating motor (21), a vertical plate (23) is provided at one end of the crossbar (22), and a curved core sleeve (24) is provided at the lower end of the vertical plate (23).

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