A reinforcing bar bending testing machine
By designing the clamping and force-applying components inside the housing, multi-angle bending tests of the rebar bending test machine were realized, solving the problem that existing equipment could not meet the testing requirements for specific bending shapes, and improving the flexibility and accuracy of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN COSCO WATER ENGINEERING QUALITY INSPECTION CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-19
Smart Images
Figure CN224383020U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rebar testing technology, specifically a rebar bending test machine. Background Technology
[0002] Steel bars are an essential material in building construction, playing a decisive role in the compressive strength and toughness of reinforced concrete. Bending tests on steel bars are a crucial step in ensuring their quality and the safety of the project.
[0003] Currently, there are many devices and publicly available patent documents on the market for testing the bending of steel bars, such as the utility model patent with publication number CN221100350U and the utility model patent with publication number CN216484402U. Both of them use a test method in which a pressure head presses the steel bar downward from above.
[0004] However, with the increasing diversity of construction techniques, the uses of reinforcing steel are also becoming more varied. In certain specialized projects, reinforcing steel needs to be bent into specific shapes. For example, when fabricating complex steel structural components, it may be necessary for the reinforcing steel to form an upward arc or special geometric shape at the bend. In this case, force needs to be applied from below to bend the reinforcing steel upwards. However, the technical solutions described in the aforementioned patent documents have certain limitations. Therefore, it is necessary to provide a reinforcing steel bending testing machine to solve the above problems.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention
[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a rebar bending test machine that can flexibly change the force application angle of the rebar to be tested.
[0007] The technical solution adopted by this application to solve its technical problem is: a rebar bending test machine, including a housing, on which a clamping assembly and a force-applying assembly are provided. The clamping assembly is used to clamp the rebar to be tested. The force-applying assembly includes: a first output rod, which is disposed on the housing; a drive disk, which is disposed on the first output rod, and the drive disk is adapted to move toward or away from the rebar to be tested; and a pressure rod, which is disposed on the drive disk, and the pressure rod is used to contact the rebar to be tested, and the pressure rod and the rebar to be tested have an angle on the projection of the pressure rod on the plane; wherein: according to the bending test requirements, the pressure rod is moved to one side of the rebar to be tested by the first output rod, and the pressure rod is driven to move toward the rebar to be tested when the bending test begins.
[0008] Furthermore, the clamping assembly includes a first clamp and a second clamp, both of which are provided with clamping holes, and the clamping holes on the first clamp and the second clamp correspond to each other.
[0009] Furthermore, the first clamp is equipped with a pointer, and the box is equipped with a scale.
[0010] Furthermore, the box body is also provided with a sliding groove, and the scale is set in the sliding groove and adapted to move along the setting direction of the sliding groove.
[0011] Furthermore, a magnet is provided between the scale and the groove.
[0012] Furthermore, the first clamp is provided with a rack, the housing is provided with a gear, the rack meshes with the gear, and the gear is provided with an encoder.
[0013] The beneficial effects of this application are: the steel bar bending test machine provided by this application, by being equipped with a drive plate and a pressure bar, can place the pressure bar above or below the steel bar to be tested according to the test requirements, and then control the pressure bar to press down from top to bottom or pull the steel bar to be tested from bottom to top, thereby meeting different requirements of steel bar bending test.
[0014] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description
[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0016] Figure 1 This is an overall schematic diagram of a rebar bending testing machine according to this application;
[0017] Figure 2 for Figure 1 Enlarged view of a portion of region A in the middle;
[0018] Figure 3 This is a schematic diagram of the structure of the mobile component.
[0019] Figure 4 This is a schematic diagram of the drive disk structure.
[0020] The following are the labeling elements in the figure:
[0021] 1. Bracket;
[0022] 2. Box body;
[0023] 3. First hydraulic cylinder; 31. First output rod; 32. Drive disc; 33. Pressure rod;
[0024] 4. Second hydraulic cylinder; 41. First clamp; 42. Pointer; 43. Scale; 44. Slide groove; 45. Rack; 46. Gear;
[0025] 5. Third hydraulic cylinder; 51. Second clamp;
[0026] 6. Control panel;
[0027] 7. Reinforcing steel bars to be tested. Detailed Implementation
[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0030] like Figures 1-4 As shown, this application provides a rebar bending test machine, including a support 1 and a housing 2. The housing 2 is mounted on the support 1 and is used to support the components of the test machine.
[0031] The housing 2 is equipped with three sets of hydraulic cylinders, including a first hydraulic cylinder 3, a second hydraulic cylinder 4, and a third hydraulic cylinder 5. In this embodiment, the three sets of hydraulic cylinders are configured as follows: the first hydraulic cylinder 3 is set perpendicular to the ground and is mainly used to output the force for bending the reinforcing bar; the second hydraulic cylinder 4 is set on the left side parallel to the ground and is mainly used as the part that moves after being subjected to force; and the third hydraulic cylinder 5 is set on the right side parallel to the ground and is mainly used to adjust the position of the reinforcing bar 7 to be tested. In other embodiments, the order of the hydraulic cylinders can be adjusted according to the actual site requirements. The following description in this case is based on this embodiment.
[0032] like Figures 1-2As shown, the bending test machine also includes a clamping assembly, which includes a first clamp 41 provided at the output end of the second cylinder 4 and a second clamp 51 provided at the output end of the third cylinder 5. Each clamp is provided with a clamping hole, and the clamping holes of the first clamp 41 and the second clamp 51 are paired with each other, so that the two ends of a steel bar 7 to be tested can be clamped on the first clamp 41 and the second clamp 51 respectively. Thus, the two corresponding clamping holes on the first clamp 41 and the second clamp 51 can be referred to as a set of clamping holes, and the two clamps are provided with at least two sets of clamping holes.
[0033] like Figure 2 As shown, in this embodiment, four clamping holes are used. In other embodiments, more clamping holes can be added to install more steel bars 7 to be tested, thereby increasing the number of samples for each test. Of course, when installing the steel bars 7 to be tested, they can only be installed on the same plane to avoid motion interference or inaccurate test results due to the presence of undeformed steel bars 7 on other planes after the steel bars 7 on the plane are deformed by force.
[0034] The first hydraulic cylinder 3 has a first output rod 31, and a force-applying component is provided at the end of the first output rod 31. The force-applying component includes a drive disk 32, which is located at the end of the first output rod 31. When the first output rod 31 moves up and down, it can drive the drive disk 32 to move up and down. At the same time, the drive disk 32 can also rotate to adjust its angle.
[0035] like Figure 2 , Figure 4 A detachable pressure rod 33 is provided on the drive plate 32. The pressure rod 33 can be fixed to the drive plate 32 by means of threads, bolts and nuts. The drive plate 32 has multiple mounting holes for installing the pressure rod 33. The number and position of the pressure rod 33 can be adjusted according to the actual testing requirements.
[0036] like Figure 2 As shown, the pressure bar 33 and the steel bar 7 to be tested have a certain angle on the plane projection parallel to the ground. The existence of this angle is mainly to make the pressure bar 33 contact the steel bar 7 to be tested when it moves up and down. According to the actual test requirements, the angle of the drive disc 32 can be adjusted so that the pressure bar 33 contacts the steel bar 7 to be tested and applies force at different angles. This angle can be between 30° and 90°.
[0037] like Figure 2As shown, after the reinforcing bar 7 to be tested is installed, the first output rod 31 can be controlled to move the drive plate 32 to the corresponding position and install the pressure rod 33 (of course, the drive plate 32 can be moved and the pressure rod 33 can be installed first, and then the reinforcing bar 7 to be tested can be installed). After the pressure rod 33 and each reinforcing bar 7 to be tested are installed, the bending test of the reinforcing bar 7 to be tested can be started.
[0038] During the test, the third cylinder 5 was locked, meaning it would not move after being subjected to force; the second cylinder 4 was free, meaning it could move linearly after being subjected to force; and the first cylinder 3 was used to apply the force to bend the steel bar.
[0039] A pointer 42 is provided on one side of the first clamp 41, and a scale 43 is provided at the corresponding position on the housing 2. The scale 43 is provided with graduations.
[0040] After the bending test begins, the first output rod 31 is controlled to move up or down according to the test requirements via the operation panel 6. When it moves, the pressure rod 33 will contact the steel bar 7 to be tested and cause the steel bar 7 to deform. At this time, because the third cylinder 5 is locked, the deformation of the steel bar 7 will only drive the first clamp 41 on the output end of the second cylinder 4 to move to the left.
[0041] After the first clamp 41 moves, the pointer 42 on it will move a certain distance on the scale 43. At this time, the operator can obtain the bending test result based on the force data of the first oil cylinder 3 and the data change of the scale 43.
[0042] Furthermore, such as Figure 2 As shown, the pressure bar 33 can be installed in more than one set or one piece, and multiple sets or multiple pieces can be installed. This allows force to be applied to multiple points of the steel bar 7 under test in one movement, so that the steel bar 7 under test is subjected to force at multiple points, according to the test requirements.
[0043] Meanwhile, in order to meet the diversity of the stress points of the steel bar 7 to be tested, the third oil cylinder 5 can be moved after the pressure rod 33 is installed, thereby changing the contact position between the steel bar 7 to be tested and the pressure rod 33, so that the pressure rod 33 can apply force to any position of the steel bar 7 to be tested.
[0044] After the third cylinder 5 has moved, the position of the scale 43 can be adjusted. The scale 43 is installed in a groove 44, and a magnet is provided between the scale 43 and the groove 44, so that the scale 43 can stop at the zero position indicated by the pointer 42 or at a position that is easy to read.
[0045] like Figure 3As shown, this embodiment not only has one reading method via pointer 42 and scale 43, but also a rack 45 can be installed on the first clamp 41, and a gear 46 can be installed at the contact position of the rack 45. An encoder is provided on the gear 46. During the test, if the steel bar 7 to be tested deforms, the first clamp 41 moves, and the first clamp 41 will drive the rack 45 to move. The rack 45 will drive the gear 46 to rotate. The encoder on the gear 46 can record the value of its rotation and import it into the connected test computer or system. Based on the first cylinder 3 or other data, the test result is finally automatically obtained.
[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A steel bar bending test machine, comprising a housing (2), characterized in that: The box (2) is provided with a clamping component and a force application component. The clamping component is used to clamp the steel bar (7) to be tested. The force-applying component includes: The first output rod (31) is mounted on the housing (2); A drive disk (32) is disposed on a first output rod (31), the drive disk (32) being adapted to move toward or away from the steel bar (7) to be measured; A pressure bar (33) is mounted on a drive disc (32). The pressure bar (33) is used to contact the steel bar (7) to be tested, and the pressure bar (33) and the steel bar (7) to be tested have an angle on the projection of the plane. Wherein: According to the bending test requirements, the pressure rod (33) is moved to one side of the steel bar (7) to be tested by the first output rod (31), and the pressure rod (33) is driven to move toward the steel bar (7) to be tested when the bending test begins.
2. The steel bar bending test machine according to claim 1, characterized in that: The clamping assembly includes a first clamp (41) and a second clamp (51), both of which are provided with clamping holes, and the clamping holes on the first clamp (41) and the second clamp (51) correspond to each other.
3. A steel bar bending testing machine according to claim 2, characterized in that: The first clamp (41) is equipped with a pointer (42), and the box (2) is equipped with a scale (43).
4. A steel bar bending testing machine according to claim 3, characterized in that: The box (2) is also provided with a slide groove (44), and the scale (43) is set in the slide groove (44) and is adapted to move along the setting direction of the slide groove (44).
5. A steel bar bending testing machine according to claim 4, characterized in that: A magnet is provided between the scale (43) and the groove (44).
6. A steel bar bending testing machine according to claim 2, characterized in that: The first clamp (41) is provided with a rack (45), the housing (2) is provided with a gear (46), the rack (45) meshes with the gear (46), and the gear (46) is provided with an encoder.