Reverse bending testing machine for reinforcing steel bar

Abstract

The utility model discloses a reverse bending testing machine for reinforcing steel bars, which relates to the field of reinforcing steel bar bending and comprises a base, a driving device is mounted at the top of the base, an adjusting component is connected to the side surface of the driving device, and a bending table is mounted at the top of the base far away from the driving device; according to the reverse bending testing machine for the reinforcing steel bar, a worker can abut one end of the reinforcing steel bar against the side face of the baffle and then operate the reverse bending testing machine to conduct bending machining, the length position does not need to be accurately calibrated, and the machining efficiency of the reverse bending testing machine is improved; when the movable groove slides, the baffle can be lowered to the horizontal height relative to the surface of the base, the attractiveness is improved, the collision danger is reduced, the clamping block can be clamped and positioned with the clamping groove when resetting, the protection plate can be driven to be positioned when the clamping groove is positioned, the baffle can be prevented from being abraded and damaged after the protection plate is positioned, and the service life of parts is prolonged. And the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar bending, in particular to a steel bar reverse bending testing machine. Background Art

[0002] Steel bar bending refers to the process of processing steel bars into a desired shape or angle under specific conditions. In construction and civil engineering, steel bars usually need to be bent to adapt to engineering design and structural requirements. The steel bar reverse bending tester is a device used to test the performance and behavior of steel bars or other materials under reverse loading conditions. Samples are usually bent under reverse loading to evaluate their compressive, bending or other mechanical properties.

[0003] In the prior art, a Chinese patent with authorization announcement number CN210953666U discloses a steel bar reverse bending testing machine, which belongs to the field of steel bar bending. Its technical points include a limit plate and a side fixing plate. A slide groove is provided on the side fixing plate, a slider is slidably connected in the slide groove, a lead screw shaft is rotatably connected in the slide groove along its length direction, a lead screw nut is threadedly connected on the lead screw shaft, the lead screw nut is fixedly connected to the slider, a rotating rod for rotating the lead screw shaft is rotatably connected to the side fixing plate, a plug-in rod is fixedly connected to the upper surface of the slider, a plug-in groove for slidably plugged with the plug-in rod is provided on the limit plate, and a fixing device for fixing the limit plate is provided between the slider and the limit plate. Through the setting of the slider, the lead screw shaft and the fixing device, the position adjustment operation of the limit plate can be simplified, the test time can be saved, and the test efficiency can be improved.

[0004] At present, most bending testing machines on the market still have certain deficiencies during testing. As shown in the above-mentioned document, the device can make the position adjustment of the limit plate easy to operate, save test time, and improve test efficiency through the setting of sliders, screw shafts, and fixing devices. However, if it is necessary to measure the bending strength of a large number of steel bars or steel bars of different lengths, it is difficult for construction personnel to control and adjust the length of the test sample, and it is difficult to accurately conduct experiments and obtain reliable data. At the same time, calibrating the length will take time, and there are certain deficiencies in use. Utility Model Content

[0005] The utility model aims to provide a steel bar reverse bending tester to solve the problems in the background technology that the bending tester is inconvenient for quantitative length operation, thus affecting the numerical accuracy, and the parts of the machine are troublesome to replace, which increases the cost of use.

[0006] To achieve the above object, the utility model provides the following technical solutions: a steel bar reverse bending test machine, comprising a base, a driving device is installed on the top of the base, an adjustment component is connected to the side of the driving device, and a bending table is installed on the top of the base away from the driving device;

[0007] The back of the base is provided with a first sliding groove, and a limiting mechanism for assisting quantitative processing is arranged inside the first sliding groove. The limiting mechanism includes a first scale plate, the first scale plate slides inside the first sliding groove, a guide groove is provided on the inner side of the first scale plate, a through groove is penetrated through the side of the guide groove, a second scale plate slides through the first scale plate, a first threaded rod is rotatably connected to the right side of the second scale plate, the first threaded rod penetrates and slides inside the guide groove and the through groove, a guide block is threadedly connected to the surface of the first threaded rod, and the guide block slides inside the guide groove, a limiting groove is provided on the left side of the first sliding groove, a limiting block slides through the limiting groove, and the limiting block is fixed on the left side of the second scale plate, a second sliding groove is provided on the right side of the first sliding groove, a second threaded rod is fixed on the right side of the second scale plate, the second threaded rod and the first threaded rod both penetrate and slide inside the second sliding groove, a threaded block is threadedly connected to the right end of the second threaded rod, and a baffle is connected to the back of the first scale plate;

[0008] The front part of the baffle is symmetrically provided with movable grooves, and a retracting mechanism for improving safety and aesthetics is arranged inside the movable grooves.

[0009] Furthermore, the guide groove and the guide block are slidably connected, the guide block and the first threaded rod are threadedly connected, scale lines are connected to the surfaces of the first scale plate and the second scale plate, the second scale plate and the limit groove are an integral structure, and the second threaded rod and the threaded block are threadedly connected.

[0010] Furthermore, the retracting mechanism includes a movable block, the movable block slides through the movable groove, the front end of the movable block is fixed to the back of the first scale plate, and the movable block is internally connected with a first spring.

[0011] Furthermore, a squeezing ball is connected to the end of the first spring, and the squeezing ball slides inside the movable block. A squeezing groove is provided on the side of the movable groove, and the squeezing ball forms a telescopic structure with the movable block through the first spring.

[0012] Furthermore, a protection mechanism for improving durability is also arranged inside the baffle, and the protection mechanism includes a telescopic groove, and the telescopic groove is opened through the back of the baffle, and a locking block slides through the telescopic groove.

[0013] Furthermore, a connecting block is fixed on the side of the engaging block, the engaging block and the connecting block are an integral structure, the connecting block slides inside a slide groove, the slide groove is provided on the side of the telescopic groove, and a second spring is connected between the telescopic groove and the engaging block.

[0014] Furthermore, a protective plate is connected to the front of the baffle, a snap-in groove is provided on the back of the protective plate, the snap-in groove and the snap-in block form a snap-in connection, a positioning block is fixed to the front of the baffle, a positioning groove is provided on the back of the protective plate, and there are four positioning grooves and four positioning blocks.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. For this steel bar reverse bending test machine, the staff can push one end of the steel bar against the side of the baffle and then operate the machine for bending processing. There is no need to accurately calibrate the length position, which improves the test efficiency. When the extrusion ball is squeezed out of the extrusion groove, the movable groove can be squeezed by the movable block. When the movable groove slides, the baffle can be lowered to the same level as the base surface, which improves the aesthetics and reduces the risk of bumping. When the snap block is reset, it can be snapped and positioned with the snap groove. When the snap groove is positioned, it can drive the protective plate to be positioned. After the protective plate is positioned, it can prevent the baffle from being worn and damaged, thereby increasing the service life of parts and reducing the cost of use.

[0017] 2. A first scale plate and a second scale plate are provided, and the extension of the first scale plate and the second scale plate can fully increase the length of quantitative processing of the testing machine, reduce the error, and improve the processing quality;

[0018] 3. A limit block is provided, and the position of the second scale plate can be limited by sliding the limit block and the limit groove to prevent the limiting mechanism from escaping from the inside of the base, thereby improving the convenience of operation;

[0019] 4. The extrusion ball and the extrusion groove are provided. Through the extrusion positioning of the extrusion ball and the extrusion groove, the baffle can be supported when it extends upward to prevent the baffle from sliding down under the action of gravity, thereby improving the stability of the baffle during operation;

[0020] 5. A second spring is provided, through which the engagement block and the engagement groove can be engaged and positioned. The engagement structure is simple and quick to operate, which is convenient for daily replacement of the testing machine after wear and tear, and improves the use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall front-view stereoscopic structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall rear-view stereoscopic structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the base of the utility model;

[0024] Figure 4 This is a schematic diagram of the cutaway three-dimensional structure of the first scale plate of the utility model;

[0025] Figure 5 This is a schematic diagram of a cross-sectional three-dimensional structure of the second threaded rod of the utility model;

[0026] Figure 6 This is a schematic diagram of the cutaway three-dimensional structure of the movable block of the utility model;

[0027] Figure 7 For this utility model Figure 6 The enlarged three-dimensional structure diagram of the middle A part;

[0028] Figure 8 This is a schematic diagram of the cross-sectional three-dimensional structure of the baffle of the utility model;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the split baffle of the utility model.

[0030] In the figure: 1, base; 2, driving device; 3, adjusting component; 4, bending table; 101, first sliding groove; 102, first scale plate; 103, guide groove; 104, through groove; 105, second scale plate; 106, first threaded rod; 107, guide block; 108, limit groove; 109, limit block; 110, second sliding groove; 111, second threaded rod; 112, threaded block; 113, baffle; 114, movable groove; 115, movable block; 116, first spring; 117, squeezing ball; 118, squeezing groove; 119, telescopic groove; 120, sliding groove; 121, locking block; 122, connecting block; 123, second spring; 124, locking groove; 125, protective plate; 126, positioning block; 127, positioning groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1:

[0033] like Figure 1-Figure 5 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the testing machine needs to slowly align the length when testing a large number of steel bars, thereby affecting the work efficiency and easily causing errors, a limiting mechanism is disclosed:

[0034] The invention comprises a base 1, a driving device 2 is installed on the top of the base 1, an adjusting component 3 is connected to the side of the driving device 2, a bending table 4 is installed on the top of the base 1 away from the driving device 2, a first sliding groove 101 is provided on the back of the base 1, a limiting mechanism for auxiliary quantitative processing is arranged inside the first sliding groove 101, and the limiting mechanism comprises a first scale plate 102, the first scale plate 102 slides inside the first sliding groove 101, a guide groove 103 is provided on the inner side of the first scale plate 102, a through groove 104 is penetrated through the side of the guide groove 103, a second scale plate 105 is penetrated and slides inside the first scale plate 102, a first threaded rod 106 is rotatably connected to the right side of the second scale plate 105, the first threaded rod 106 penetrates and slides inside the guide groove 103 and the through groove 104, a guide block 107 is threadedly connected to the surface of the first threaded rod 106, the guide block 107 slides inside the guide groove 103, and a limiting groove 108 is provided on the left side of the first sliding groove 101 , a sliding limit block 109 runs through the limit groove 108, the limit block 109 is fixed on the left side of the second scale plate 105, a second sliding groove 110 is opened on the right side of the first sliding groove 101, a second threaded rod 111 is fixed on the right side of the second scale plate 105, the second threaded rod 111 and the first threaded rod 106 both run through and slide in the second sliding groove 110, a threaded block 112 is threadedly connected to the right end of the second threaded rod 111, a baffle 113 is connected to the back of the first scale plate 102, and a movable groove 114 is symmetrically opened at the front of the baffle 113, and a contraction mechanism for improving safety and aesthetics is arranged inside the movable groove 114, the guide groove 103 is slidably connected to the guide block 107, the guide block 107 is threadedly connected to the first threaded rod 106, scale lines are connected to the surfaces of the first scale plate 102 and the second scale plate 105, the second scale plate 105 and the limit groove 108 are an integral structure, and the second threaded rod 111 and the threaded block 112 are threadedly connected;

[0035] When the testing machine needs to process the designated position, the baffle 113 is pulled to drive the first scale plate 102 to move. When the first scale plate 102 moves, it can slide through the first sliding groove 101 and the second scale plate 105. When the first scale plate 102 slides, it can drive the guide groove 103 and the through groove 104 to move. When the guide groove 103 moves, it can slide through the guide block 107. When the through groove 104 moves, it can slide through the first threaded rod 106. When the baffle 113 slides, the processing personnel can adjust it to the required position through the scale lines on the surface. At this time, turn the first threaded rod 106. The second scale plate 105 can be rotated, and the first threaded rod 106 can drive the guide block 107 to slide threadedly when rotating. The guide block 107 can slide through the guide groove 103 when sliding threadedly. When the guide block 107 slides to the inner side of the guide groove 103, it can be squeezed and positioned. When the guide block 107 is positioned, it can drive the first scale plate 102 to be positioned to a specified length. When the length of the first scale plate 102 is insufficient, the baffle 113 is continuously pulled to drive the first scale plate 102 to move, and the first scale plate 102 can drive the through groove 104 to move to the side of the first threaded rod 106 When the first threaded rod 106 is pushed, the second scale plate 105 can be driven to move. When the second scale plate 105 moves, the limit block 109 and the second threaded rod 111 can be driven to move. When the limit block 109 moves, it can slide through the limit groove 108. When the second threaded rod 111 moves, it can slide through the second sliding groove 110. After the second scale plate 105 slides to the specified position, the thread block 112 is moved to the end of the second threaded rod 111 for rotation. When the thread block 112 rotates, it can slide with the second threaded rod 111. The thread block 112 slides to the base 1 side, it can be squeezed and fixed, when the threaded block 112 is fixed, the second scale plate 105 can be driven to be positioned through the second threaded rod 111, and when the second scale plate 105 is positioned, the baffle 113 can be driven to be positioned. At this time, the second scale plate 105 can extend the first scale plate 102, and the first scale plate 102 can drive the baffle 113 to a specified position after being extended. The staff can push one end of the steel bar against the side of the baffle 113 and then operate the machine for bending processing, without the need to accurately calibrate the length position, thereby improving the test work efficiency and ensuring the accuracy and consistency of the steel bar bending.

[0036] Embodiment 2:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the baffle 113 is relatively high and obstructs the test machine when it is not in operation, which affects the appearance and is easy to collide with people and is dangerous, based on the first embodiment, a retracting mechanism is disclosed:

[0038] The retracting mechanism includes a movable block 115, which penetrates and slides inside the movable groove 114. The front end of the movable block 115 is fixed to the back of the first scale plate 102. The movable block 115 is connected to a first spring 116. The end of the first spring 116 is connected to a squeezing ball 117. The squeezing ball 117 slides inside the movable block 115. The side of the movable groove 114 is provided with a squeezing groove 118. The squeezing ball 117 forms a telescopic structure with the movable block 115 through the first spring 116. When the testing machine is not in operation, the baffle plate 113 can be pressed down to drive the movable groove 114 to move. 4 moves with the extrusion groove 118, when the extrusion groove 118 moves, the inclined surface of the extrusion ball 117 can be squeezed, when the extrusion ball 117 is squeezed, it can slide through the movable block 115, when the extrusion ball 117 slides, it can squeeze the first spring 116, when the extrusion ball 117 is squeezed out of the extrusion groove 118, the movable groove 114 can be squeezed through the movable block 115, when the movable groove 114 slides, the baffle 113 can be lowered to the level with the surface of the base 1, which improves the aesthetics and reduces the risk of bumping, and is more convenient to use.

[0039] Embodiment three:

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the baffle 113 of the testing machine wears out quickly, affects the quantitative accuracy, and has a high replacement cost, a protective mechanism is disclosed:

[0041] The baffle 113 is also provided with a protection mechanism for improving durability, which includes a telescopic slot 119, which is provided on the back of the baffle 113, a snap-fit ​​block 121 slidingly extending through the telescopic slot 119, a connecting block 122 fixed on the side of the snap-fit ​​block 121, the snap-fit ​​block 121 and the connecting block 122 are an integral structure, the connecting block 122 slides inside the slide slot 120, the slide slot 120 is provided on the side of the telescopic slot 119, and the telescopic slot 119 and the snap-fit ​​block 121 are provided on the side of the telescopic slot 119. A second spring 123 is connected between the baffle plate 113 and the baffle plate 113, a protective plate 125 is connected to the front of the baffle plate 113, a snap-fitting groove 124 is provided on the back of the protective plate 125, and the snap-fitting groove 124 and the snap-fitting block 121 form a snap-fitting connection, a positioning block 126 is fixed to the front of the baffle plate 113, and a positioning groove 127 is provided on the back of the protective plate 125. There are four positioning grooves 127 and four positioning blocks 126. Before the test machine is used, pushing the snap-fitting block 121 can drive the connecting block 122 to move. When the locking block 121 is released, the second spring 123 can be pressed against the locking block 121, and the protective plate 125 can be moved after the locking block 121 is pressed to a certain position. When the protective plate 125 moves, the locking groove 124 and the positioning groove 127 can be driven to move. When the locking groove 124 moves to the end of the locking block 121, the positioning groove 127 can move to the end of the positioning block 126. At this time, the positioning block 126 and the baffle 113 are fitted together. When fitting, the positioning block 126 can slide into the inside of the positioning groove 127, and the locking block 121 can also slide into the inside of the locking groove 124. The locking block 121 is released and can be reset under the elastic force of the second spring 123. When the locking block 121 is reset, it can be locked and positioned with the locking groove 124. When the locking groove 124 is positioned, the protective plate 125 can be driven to be positioned. After the protective plate 125 is positioned, the baffle 113 can be prevented from being worn and damaged, thereby improving the service life of parts and reducing the cost of use.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel bar reverse bending test machine, comprising a base (1), a driving device (2) is installed on the top of the base (1), an adjusting assembly (3) is connected to the side of the driving device (2), and a bending table (4) is installed on the top of the base (1) away from the driving device (2). It is characterized by: The base (1) is provided with a first sliding groove (101) at the back, and a limiting mechanism for assisting quantitative processing is arranged inside the first sliding groove (101), and the limiting mechanism comprises a first scale plate (102), the first scale plate (102) slides inside the first sliding groove (101), a guide groove (103) is provided on the inner side of the first scale plate (102), a through groove (104) is provided through the side of the guide groove (103), a second scale plate (105) slides through the inside of the first scale plate (102), and a first threaded rod (106) is rotatably connected to the right side of the second scale plate (105), the first threaded rod (106) slides through the inside of the guide groove (103) and the through groove (104), and the surface of the first threaded rod (106) is threaded. The first sliding groove (101) is provided with a guide block (107), the guide block (107) slides inside the guide groove (103), a limit groove (108) is provided on the left side of the first sliding groove (101), a sliding limit block (109) passes through the limit groove (108), the limit block (109) is fixed on the left side of the second scale plate (105), a second sliding groove (110) is provided on the right side of the first sliding groove (101), a second threaded rod (111) is fixed on the right side of the second scale plate (105), the second threaded rod (111) and the first threaded rod (106) both pass through and slide inside the second sliding groove (110), the right end of the second threaded rod (111) is threadedly connected with a threaded block (112), and the back of the first scale plate (102) is connected with a baffle (113); The front part of the baffle (113) is symmetrically provided with a movable groove (114), and a retracting mechanism for improving safety and aesthetics is arranged inside the movable groove (114).

2. A steel bar reverse bending testing machine according to claim 1, characterized in that: The guide groove (103) and the guide block (107) are slidably connected, the guide block (107) and the first threaded rod (106) are threadedly connected, scale lines are connected to the surfaces of the first scale plate (102) and the second scale plate (105), the second scale plate (105) and the limiting groove (108) are an integral structure, and the second threaded rod (111) and the threaded block (112) are threadedly connected.

3. A steel bar reverse bending testing machine according to claim 1, characterized in that: The retracting mechanism comprises a movable block (115), the movable block (115) penetrates and slides inside the movable groove (114), the front end of the movable block (115) is fixed to the back of the first scale plate (102), and the movable block (115) is internally connected with a first spring (116).

4. A steel bar reverse bending testing machine according to claim 3, characterized in that: The end of the first spring (116) is connected to a squeezing ball (117), the squeezing ball (117) slides inside the movable block (115), a squeezing groove (118) is provided on the side of the movable groove (114), and the squeezing ball (117) forms a telescopic structure with the movable block (115) through the first spring (116).

5. A steel bar reverse bending testing machine according to claim 1, characterized in that: A protection mechanism for improving durability is also provided inside the baffle (113), and the protection mechanism comprises a telescopic slot (119). The telescopic slot (119) is opened through the back of the baffle (113), and a locking block (121) is slidably passed through the telescopic slot (119).

6. A steel bar reverse bending testing machine according to claim 5, characterized in that: A connecting block (122) is fixed on the side of the engaging block (121); the engaging block (121) and the connecting block (122) are an integrated structure; the connecting block (122) slides inside a slide groove (120); the slide groove (120) is provided on the side of the telescopic groove (119); a second spring (123) is connected between the telescopic groove (119) and the engaging block (121).

7. A steel bar reverse bending testing machine according to claim 6, characterized in that: The front of the baffle (113) is connected to a protective plate (125), the back of the protective plate (125) is provided with a snap-fitting groove (124), the snap-fitting groove (124) and the snap-fitting block (121) form a snap-fitting connection, the front of the baffle (113) is fixed with a positioning block (126), the back of the protective plate (125) is provided with a positioning groove (127), and four of the positioning grooves (127) and the positioning block (126) are provided.

Images