Auxiliary guide structure for steel bar bending test

Abstract

The utility model discloses an auxiliary guide structure for a steel bar bending test, which belongs to the technical field of steel bar detection and comprises a bottom plate, the top of the bottom plate is fixedly connected with a mounting plate, the top of the mounting plate is bolted with a hydraulic push rod, and the output end of the hydraulic push rod is fixedly connected with a mounting strip. According to the reinforcing steel bar bending test device, reinforcing steel bars can be stably guided and supported in the reinforcing steel bar bending process, the reinforcing steel bars are effectively prevented from deviating or shaking in the bending process, the accuracy of a reinforcing steel bar bending test is improved, and the reinforcing steel bar bending test device is simple in structure, convenient to use and high in practicability. It is ensured that the test result can truly reflect the bending performance of the reinforcing steel bars, the distance between the two auxiliary wheels can be conveniently adjusted by moving the driving assembly, and the auxiliary guiding structure can meet the bending test requirements of the reinforcing steel bars with different diameters.

Description

Technical Field

[0001] This utility model relates to the field of rebar testing technology, and in particular to an auxiliary guiding structure for rebar bending testing. Background Technology

[0002] In many fields such as construction engineering, bridge construction, and machinery manufacturing, steel bars are key load-bearing and stress-bearing materials. The accurate assessment of their mechanical properties is crucial. Steel bar bending test is one of the important means to measure the quality of steel bars and determine whether they meet relevant standards and engineering requirements. Through bending test, we can intuitively understand the deformation capacity, bending strength, and whether there are brittle fracture problems of steel bars when subjected to bending force, thus providing reliable data support for engineering design and construction. At present, when conducting steel bar bending test, a special steel bar bending testing machine is usually used. These testing machines generally have a bending device and a drive mechanism that can apply bending force to the steel bars to make them bend and deform.

[0003] Existing steel bar bending performance testing devices often require testing multiple steel bars to obtain more accurate experimental results. However, testing multiple steel bars is wasteful and repeatedly changing the test steel bars is troublesome.

[0004] The existing patent (publication number: CN214096984U) discloses a rebar bending performance testing device. This utility model has a reasonable structure. By setting a limiting mechanism, the limiting plate can fix the rebar, so that the rebar maintains good stability during the experiment and ensures the accuracy of the test results. By setting a moving mechanism, a pushing mechanism and a testing mechanism, multiple positions of a single rebar can be tested to obtain accurate test data, reduce waste, and eliminate the need to replace the test rebar multiple times, making it more convenient.

[0005] Existing patents offer solutions to the above problems, but they lack guidance to prevent the rebar from detaching during bending. This makes the rebar prone to falling off or shifting during bending, resulting in an inability to bend the rebar accurately.

[0006] To address this, an auxiliary guiding structure for rebar bending testing is proposed. Utility Model Content

[0007] The purpose of this invention is to provide an auxiliary guiding structure for rebar bending testing, which can solve the problem that existing rebar bending performance testing devices lack guidance to prevent rebar from falling off during the bending process, causing the rebar to easily fall off or shift during bending, resulting in the inability to accurately bend the rebar.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary guiding structure for rebar bending test, comprising a base plate, an mounting plate fixedly connected to the top of the base plate, a hydraulic push rod bolted to the top of the mounting plate, an mounting strip fixedly connected to the output end of the hydraulic push rod, a bending wheel provided on the side wall of the mounting strip, and an auxiliary guiding mechanism provided in the middle of the mounting plate;

[0009] The auxiliary guiding mechanism includes a movable groove formed in the middle of the mounting plate. Two movable blocks are movably arranged inside the movable groove. A movable plate is fixedly connected to the side wall of each movable block. A connecting shaft is provided at one end of each movable plate. An auxiliary wheel is installed on the side wall of the connecting shaft. An auxiliary plate is provided on the side wall of the auxiliary wheel. A mounting bracket is provided at one end of the auxiliary plate. An anti-detachment component is provided on the side wall of the mounting bracket. A movement drive component is provided on the side wall of the mounting plate. A reset component is provided on the side wall of the movable plate.

[0010] Preferably, the anti-detachment component includes an anti-detachment bottom block disposed on the side wall of the mounting frame, a locking screw threaded to the top of the mounting frame, a disc fixedly connected to the bottom of the locking screw, an anti-detachment top block disposed on the side wall of the mounting frame, a connecting frame disposed on the top of the anti-detachment top block, the disc being movably disposed in the middle of the connecting frame, and anti-detachment grooves being provided on the side walls of both the anti-detachment bottom block and the anti-detachment top block.

[0011] Preferably, the moving drive assembly includes a bidirectional lead screw disposed on the side wall of the mounting plate, the bidirectional lead screw being threadedly connected to the moving block, and a drive motor being bolted to the side wall of the mounting plate, the output end of the drive motor being fixedly connected to the bidirectional lead screw.

[0012] Preferably, the reset assembly includes a connecting plate disposed at the bottom of the movable plate, a connecting seat connected to the bottom bearing of the connecting plate, a reset spring disposed on the side wall of the connecting seat and the anti-detachment block, and a limit strip disposed on the side wall of the movable plate, the limit strip contacting the auxiliary plate.

[0013] Preferably, a positioning rod is provided on the side wall of the mounting plate, and positioning blocks are respectively provided at both ends of the positioning rod. A locking screw is provided on the side wall of the positioning block, the locking screw is in contact with the positioning rod, and the positioning block is fixedly connected to the moving block.

[0014] Preferably, the mounting bracket has two limiting grooves on its side wall, and the anti-detachment block has two limiting blocks on its side wall, with the limiting blocks being movably disposed inside the limiting grooves.

[0015] Preferably, two guide rods are fixedly connected to the side wall of the mounting strip, and a guide cylinder is fixedly connected to the side wall of the mounting plate, with the guide rods and the guide cylinder being movably connected.

[0016] Preferably, the sidewalls of both the bending wheel and the auxiliary wheel are rounded.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application incorporates an auxiliary guiding mechanism. Through the action of this mechanism, the steel bar can be stably guided and supported during the bending process, effectively preventing the steel bar from shifting or swaying during bending. This improves the accuracy of the steel bar bending test and ensures that the test results truly reflect the bending performance of the steel bar. The distance between the two auxiliary wheels can be easily adjusted by moving the drive component, allowing the auxiliary guiding structure to adapt to the bending test requirements of steel bars with different diameters.

[0019] 2. This application incorporates a guide rod and a guide cylinder. The cooperation between the guide rod and the guide cylinder ensures that the mounting strip and bending wheel have extremely high straightness and stability during movement, avoiding the problem of inaccurate application of bending force due to offset or swaying of the mounting strip, and effectively enhancing the stability of the entire auxiliary guiding structure. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an overall structural view of the present invention;

[0022] Figure 2 This is a schematic diagram of the auxiliary guidance mechanism in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the mobile drive component in this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the reset component in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base plate; 2. Mounting plate; 3. Hydraulic push rod; 4. Mounting strip; 5. Bending wheel; 6. Auxiliary guide mechanism; 61. Movable groove; 62. Moving block; 63. Moving plate; 64. Connecting shaft; 65. Auxiliary wheel; 66. Auxiliary plate; 67. Mounting frame; 68. Anti-detachment assembly; 69. Moving drive assembly; 610. Reset assembly; 681. Anti-detachment bottom block; 682. Locking screw; 683. Disc; 684. Anti-detachment top block; 685. Connecting frame; 686. Anti-detachment groove; 691. Two-way lead screw; 692. Drive motor; 6101. Connecting plate; 6102. Connecting seat; 6103. Reset spring; 6104. Limiting strip; 7. Positioning rod; 8. Positioning block; 9. Locking screw; 10. Limiting groove; 11. Limiting block; 12. Guide rod; 13. Guide cylinder. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 5 This utility model provides a technical solution:

[0030] An auxiliary guiding structure for rebar bending test includes a base plate 1, a mounting plate 2 fixedly connected to the top of the base plate 1, a hydraulic push rod 3 bolted to the top of the mounting plate 2, a mounting strip 4 fixedly connected to the output end of the hydraulic push rod 3, a bending wheel 5 provided on the side wall of the mounting strip 4, and an auxiliary guiding mechanism 6 provided in the middle of the mounting plate 2.

[0031] The auxiliary guiding mechanism 6 includes a movable groove 61 located in the middle of the mounting plate 2. Two movable blocks 62 are movably arranged inside the movable groove 61. A movable plate 63 is fixedly connected to the side wall of the movable block 62. A connecting shaft 64 is provided at one end of the movable plate 63. An auxiliary wheel 65 is installed on the side wall of the connecting shaft 64. An auxiliary plate 66 is provided on the side wall of the auxiliary wheel 65. A mounting bracket 67 is provided at one end of the auxiliary plate 66. An anti-detachment component 68 is provided on the side wall of the mounting bracket 67. A moving drive component 69 is provided on the side wall of the mounting plate 2. A reset component 610 is provided on the side wall of the movable plate 63.

[0032] Specifically, such as Figure 4As shown, the anti-detachment component 68 includes an anti-detachment bottom block 681 disposed on the side wall of the mounting frame 67. A locking screw 682 is threadedly connected to the top of the mounting frame 67, and a disc 683 is fixedly connected to the bottom of the locking screw 682. An anti-detachment top block 684 is disposed on the side wall of the mounting frame 67, and a connecting frame 685 is disposed on the top of the anti-detachment top block 684. The disc 683 is movably disposed in the middle of the connecting frame 685. Anti-detachment grooves 686 are provided on the side walls of both the anti-detachment bottom block and the anti-detachment top block 684.

[0033] Specifically, such as Figure 3 As shown, the moving drive assembly 69 includes a bidirectional lead screw 691 disposed on the side wall of the mounting plate 2. The bidirectional lead screw 691 is threadedly connected to the moving block 62. A drive motor 692 is bolted to the side wall of the mounting plate 2. The output end of the drive motor 692 is fixedly connected to the bidirectional lead screw 691.

[0034] Specifically, such as Figure 5 As shown, the reset assembly 610 includes a connecting plate 6101 disposed at the bottom of the movable plate 63. The bottom bearing of the connecting plate 6101 is connected to a connecting seat 6102. A reset spring 6103 is disposed on the side wall of the connecting seat 6102 and the anti-detachment block. A limit strip 6104 is disposed on the side wall of the movable plate 63. The limit strip 6104 contacts the auxiliary plate 66.

[0035] Specifically, such as Figure 3 As shown, a positioning rod 7 is provided on the side wall of the mounting plate 2, and positioning blocks 8 are provided at both ends of the positioning rod 7. A locking screw 9 is provided on the side wall of the positioning block 8. The locking screw 9 contacts the positioning rod 7, and the positioning block 8 is fixedly connected to the moving block 62.

[0036] Specifically, such as Figure 4 As shown, two limiting grooves 10 are provided on the side wall of the mounting bracket 67, and two limiting blocks 11 are provided on the side wall of the anti-detachment top block 684. The limiting blocks 11 are movably disposed inside the limiting grooves 10.

[0037] In use, the rebar to be tested is placed between the auxiliary wheel 65 and the auxiliary plate 66 of the auxiliary guide mechanism 6. By adjusting the anti-detachment component 68, the rebar can be stably positioned within the auxiliary guide mechanism 6, preventing it from falling off during the bending test. Specifically, by rotating the locking screw 682, the disc 683 rises or falls within the connecting frame 685, causing the anti-detachment top block 684 to move up and down, thereby adjusting the distance between the anti-detachment bottom block 681 and the anti-detachment top block 684, so that the rebar can be precisely locked in the anti-detachment groove 686 on the side walls of both, achieving initial positioning of the rebar. According to the specifications of the rebar and the bending test requirements, the positions of the two moving blocks 62 in the movable groove 61 are adjusted by the moving drive component 69. The auxiliary wheel 65 and the entire auxiliary guiding mechanism 6 move to adapt to bending tests of steel bars of different diameters. Specifically, the drive motor 692 starts, which in turn drives the bidirectional lead screw 691 to rotate. Since the bidirectional lead screw 691 is threadedly connected to the moving block 62, under the drive of the bidirectional lead screw 691, the two moving blocks 62 will move simultaneously in opposite or the same direction, thereby adjusting the distance between the auxiliary wheels 65 to adapt to steel bars of different specifications. The hydraulic push rod 3 starts, and its output end pushes the mounting strip 4 downward, driving the bending wheel 5 to apply bending force to the steel bar, causing the steel bar to bend and deform. During the bending process of the steel bar, the auxiliary wheel 65 and the auxiliary plate 66 are always in contact with the steel bar, playing a guiding and supporting role for the steel bar and preventing the steel bar from bending. During the bending process, any deviation or wobbling occurs, ensuring the accuracy of the bending test. Simultaneously, the positioning rod 7 and positioning block 8 provide auxiliary positioning and guidance, ensuring the smooth movement of the moving block 62 within the movable groove 61, further improving the stability of the entire auxiliary guiding mechanism 6. After the rebar bending test is completed, the hydraulic push rod 3 drives the bending wheel 5 to reset. At this time, the reset assembly 610 functions, and the elastic force of the reset spring 6103 acts on the moving plate 63 through the connecting seat 6102 and the connecting plate 6101, causing the moving plate 63 to drive the auxiliary wheel 65 and the auxiliary plate 66 back to their initial positions, preparing for the next rebar bending test. The limiting strip 6104 contacts the auxiliary plate 66, limiting its movement. The auxiliary guide mechanism 6 is used to prevent excessive movement of the auxiliary plate 66 during the reset process. At the same time, the positioning rod 7, positioning block 8 and locking screw 9 work together to lock and position the moving block 62 after the position is adjusted, avoiding displacement of the two auxiliary wheels 65 during the bending of the steel bar. Thus, through the action of the auxiliary guide mechanism 6, the steel bar can be stably guided and supported during the bending process, effectively preventing the steel bar from shifting or shaking during the bending process, improving the accuracy of the steel bar bending test, and ensuring that the test results can truly reflect the bending performance of the steel bar. The distance between the two auxiliary wheels 65 can be easily adjusted by the moving drive component 69, so that the auxiliary guide structure can adapt to the bending test requirements of steel bars of different diameters.

[0038] Specifically, such as Figure 2As shown, two guide rods 12 are fixedly connected to the side wall of the mounting strip 4, and a guide cylinder 13 is fixedly connected to the side wall of the mounting plate 2. The guide rods 12 and the guide cylinder 13 are movably connected.

[0039] Specifically, such as Figure 2 As shown, the side walls of both the bending wheel 5 and the auxiliary wheel 65 are rounded.

[0040] In use, when the hydraulic push rod 3 is activated, its output end pushes the mounting strip 4 downward. Simultaneously, the two guide rods 12, fixedly connected to the side wall of the mounting strip 4, also move downward within the guide cylinder 13 fixedly connected to the side wall of the mounting plate 2. The guide rods 12 and guide cylinder 13 are movably connected, allowing the guide rods 12 to slide smoothly within the guide cylinder 13. During the process of the mounting strip 4 driving the bending wheel 5 to apply bending force to the reinforcing bar, the guide rods 12 and guide tubes restrict the mounting strip 4 to only move in a straight line along the vertical direction, preventing the mounting strip 4 from shifting or wobbling during movement. This ensures that the bending wheel 5 can accurately apply bending force to the reinforcing bar according to a predetermined trajectory, guaranteeing the stability and accuracy of the bending test. The side walls of both the bending wheel 5 and the auxiliary wheel 65 are set in an arc shape. During the reinforcing bar bending test, the reinforcing bar is placed between the auxiliary wheel 65 and the auxiliary plate 66. The bending wheel 5 moves downward under the push of the hydraulic push rod 3 and applies pressure to the reinforcing bar. Due to the bending... The sidewalls of the bending wheel 5 and the auxiliary wheel 65 are rounded, which allows them to better conform to the outer surface of the reinforcing bar. When the bending wheel 5 applies bending force to the reinforcing bar, the rounded sidewalls can evenly transfer the force to the reinforcing bar, avoiding stress concentration and allowing the reinforcing bar to bend more evenly. At the same time, the auxiliary wheel 65 with its rounded sidewalls can roll along with the reinforcing bar during bending, reducing friction and damage to the surface of the reinforcing bar and ensuring the integrity of the reinforcing bar during the bending test. Thus, the cooperation between the guide rod 12 and the guide cylinder 13 gives the mounting strip 4 and the bending wheel 5 extremely high straightness and stability during movement, avoiding inaccurate application of bending force due to the offset or shaking of the mounting strip 4, and effectively enhancing the stability of the entire auxiliary guide structure. The rounded sidewall design of the bending wheel 5 and the auxiliary wheel 65 can better adapt to the shape of the reinforcing bar, apply force evenly during bending, and reduce friction on the surface of the reinforcing bar.

[0041] By adopting the above technical solution, the problem of existing steel bar bending performance testing devices lacking anti-detachment guidance for steel bars during bending is solved, which leads to the steel bars easily falling off or shifting during bending, resulting in the inability to accurately bend the steel bars.

[0042] Working principle: In use, the rebar to be tested is first placed between the auxiliary wheel 65 and the auxiliary plate 66 of the auxiliary guide mechanism 6. By rotating the locking screw 682, the disc 683 rises or falls within the connecting frame 685, causing the anti-detachment top block 684 to move up and down, thereby adjusting the distance between the anti-detachment bottom block 681 and the anti-detachment top block 684, so that the rebar can be precisely locked in the anti-detachment groove 686 on the side wall of both, achieving initial positioning of the rebar. According to the specifications of the rebar and the bending test requirements, the drive motor 692 is started, which in turn drives the bidirectional screw 691 to rotate. Since the bidirectional screw 691 is threadedly connected to the moving block 62, the bidirectional screw... Driven by 691, the two moving blocks 62 move simultaneously in opposite or the same direction, thereby adjusting the distance between the auxiliary wheels 65. The hydraulic push rod 3 is activated, and its output end pushes the mounting strip 4 downward. The guide rod 12 and the guide tube restrict the mounting strip 4 to move only in a straight line in the vertical direction, preventing the mounting strip 4 from deviating or swaying during the movement. This drives the bending wheel 5 to apply bending force to the steel bar, causing the steel bar to bend and deform. During the bending process of the steel bar, the auxiliary wheel 65 and the auxiliary plate 66 are always in contact with the steel bar, playing a guiding and supporting role for the steel bar, preventing the steel bar from deviating or swaying during the bending process, and ensuring the accuracy of the bending test.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary guiding structure for rebar bending testing, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the mounting plate (2), the top of the mounting plate (2) is bolted with a hydraulic push rod (3), the output end of the hydraulic push rod (3) is fixedly connected to the mounting strip (4), the side wall of the mounting strip (4) is provided with a bending wheel (5), and the middle part of the mounting plate (2) is provided with an auxiliary guiding mechanism (6). The auxiliary guiding mechanism (6) includes a movable groove (61) opened in the middle of the mounting plate (2). Two movable blocks (62) are movably arranged inside the movable groove (61). A movable plate (63) is fixedly connected to the side wall of the movable block (62). A connecting shaft (64) is provided at one end of the movable plate (63). An auxiliary wheel (65) is installed on the side wall of the connecting shaft (64). An auxiliary plate (66) is provided on the side wall of the auxiliary wheel (65). A mounting bracket (67) is provided at one end of the auxiliary plate (66). An anti-detachment component (68) is provided on the side wall of the mounting bracket (67). A moving drive component (69) is provided on the side wall of the mounting plate (2). A reset component (610) is provided on the side wall of the movable plate (63).

2. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: The anti-detachment component (68) includes an anti-detachment bottom block (681) disposed on the side wall of the mounting frame (67). The top of the mounting frame (67) is threadedly connected to a locking screw (682). The bottom of the locking screw (682) is fixedly connected to a disc (683). An anti-detachment top block (684) is disposed on the side wall of the mounting frame (67). A connecting frame (685) is disposed on the top of the anti-detachment top block (684). The disc (683) is movably disposed in the middle of the connecting frame (685). Anti-detachment grooves (686) are provided on the side walls of both the anti-detachment top block and the anti-detachment top block (684).

3. The auxiliary guiding structure for rebar bending testing according to claim 1, characterized in that: The moving drive assembly (69) includes a bidirectional lead screw (691) disposed on the side wall of the mounting plate (2), the bidirectional lead screw (691) being threadedly connected to the moving block (62), and a drive motor (692) being bolted to the side wall of the mounting plate (2), the output end of the drive motor (692) being fixedly connected to the bidirectional lead screw (691).

4. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: The reset assembly (610) includes a connecting plate (6101) disposed at the bottom of the movable plate (63). A connecting seat (6102) is connected to the bottom bearing of the connecting plate (6101). A reset spring (6103) is disposed on the side wall of the connecting seat (6102) and the anti-detachment block. A limit strip (6104) is disposed on the side wall of the movable plate (63). The limit strip (6104) contacts the auxiliary plate (66).

5. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: A positioning rod (7) is provided on the side wall of the mounting plate (2). Positioning blocks (8) are provided at both ends of the positioning rod (7). Locking screws (9) are provided on the side wall of the positioning blocks (8). The locking screws (9) are in contact with the positioning rod (7). The positioning blocks (8) are fixedly connected to the moving block (62).

6. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: The mounting bracket (67) has two limiting grooves (10) on its side wall, and the anti-detachment top block (684) has two limiting blocks (11) on its side wall. The limiting blocks (11) are movably disposed inside the limiting grooves (10).

7. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: Two guide rods (12) are fixedly connected to the side wall of the mounting strip (4), and a guide cylinder (13) is fixedly connected to the side wall of the mounting plate (2). The guide rods (12) and the guide cylinder (13) are movably connected.

8. The auxiliary guiding structure for rebar bending test according to claim 1, characterized in that: The sidewalls of both the bending wheel (5) and the auxiliary wheel (65) are rounded.

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