A steel bar bending test device for engineering inspection

Abstract

The present invention belongs to the technical field of engineering detection equipment, and in particular relates to a steel bar bending test device for engineering detection, comprising: a device body, a rotating disk, a positioning rod, a bending power source, and an adjusting part. A clamping part is provided on the device body, and the clamping part can clamp one end of the steel bar; the rotating disk is provided on the device body, the rotating disk is located on one side of the clamping part, and a fixed rod is provided in the middle of the rotating disk; the positioning rod is provided on the rotating disk, and the positioning rod and the fixed rod are spaced apart in the radial direction of the rotating disk; the bending power source can drive the rotating disk to rotate; the adjusting part can quickly adjust the position of the positioning rod along the radial direction of the rotating disk, and slowly adjust the position of the positioning rod along the radial direction of the rotating disk; compared with the prior art, the steel bar bending test device of the present invention can adjust the spacing between the fixed rod and the positioning rod over a wide range, and has a fast adjustment process and a slow adjustment process, with high adjustment efficiency and high adjustment accuracy.

Description

Technical Field

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

[0002] The rebar bending test is a key testing method in construction engineering inspections, primarily used to assess the plastic deformation capacity and quality of rebar. The purpose of the test is to examine the rebar's plastic properties, verify the presence of surface defects such as cracks and flaws, and confirm that the rebar's material meets the requirements of the project design.

[0003] The existing steel bar bending test device includes a clamping part, a rotating disk, a fixing rod and a positioning rod. The clamping part is used to fix one end of the steel bar, the fixing rod is fixed on the rotating disk, and a plurality of mounting holes are radially arranged on the rotating disk to install the positioning rod. The movable end of the steel bar is positioned by cooperating with the positioning rod and the spacing between the positioning rod and the fixing rod is adjusted by installing the positioning rod in different mounting holes to adapt to the positioning of steel bars of different diameters. Although this spacing adjustment method between the positioning rod and the fixing rod is simple, the adjustment accuracy is low and only rough adjustment is possible. There are many commonly used steel bar sizes and specifications. The existing steel bar bending test device is difficult to adapt and bend steel bars of all specifications, and its scope of application is small. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel bar bending test device for engineering inspection in response to the above-mentioned technical problems. This steel bar bending test device can adjust the distance between the fixed rod and the positioning rod over a large range, and has a fast adjustment process and a slow adjustment process, with high adjustment efficiency and high adjustment accuracy.

[0005] In view of this, the present invention provides a steel bar bending test device for engineering inspection, comprising:

[0006] The device body is provided with a clamping portion, which can clamp one end of the steel bar;

[0007] A rotating disk is provided on the device body, the rotating disk is located on one side of the clamping portion, and a fixing rod is provided in the middle of the rotating disk;

[0008] A positioning rod is provided on the rotating disk, and the positioning rod and the fixing rod are spaced apart in the radial direction of the rotating disk;

[0009] A bending power source, the bending power source can drive the rotating disk to rotate;

[0010] The adjusting part can quickly adjust the position of the positioning rod along the radial direction of the rotating disk, and slowly adjust the position of the positioning rod along the radial direction of the rotating disk.

[0011] In this technical solution, one end of the steel bar is clamped by the clamping part, and the other end of the steel bar is located between the fixed rod and the positioning rod, and the steel bar is in contact with the fixed rod. At this time, the position between the positioning rod and the fixed rod is adjusted by the adjusting part. The positioning rod is first quickly adjusted by the adjusting part to quickly approach the steel bar. When the single adjustment distance of the rapid adjustment is greater than the spacing between the positioning rod and the steel bar at this time, the positioning rod is slowly adjusted by the adjusting part to approach the steel bar and contact the steel bar. At this time, the bending power source is started to drive the rotating disk to rotate. The rotating disk, the fixed rod, and the positioning rod cooperate to bend the steel bar to a preset angle, and then the steel bar is removed to observe whether the bent surface has defects, thereby judging the plastic properties of the steel bar.

[0012] In the above technical solution, further, the adjustment unit includes:

[0013] An adjusting groove is provided on the bottom surface of the rotating disk;

[0014] The radial displacement groove is provided on the rotating disk and is connected to the adjusting groove;

[0015] The sliding seat is arranged in the adjustment groove for radial sliding along the rotating disk, and the lower end of the positioning rod passes through the radial displacement groove and is connected to the sliding seat;

[0016] A quick-adjusting rack, which is arranged on a sliding seat;

[0017] A quick-adjusting gear is arranged in the adjusting slot and is meshed with the quick-adjusting rack;

[0018] A slowly adjusting rack, the slowly adjusting rack being arranged on a sliding seat;

[0019] The slow-adjusting gear is arranged in the adjusting slot and is meshed with the slow-adjusting rack. The number of teeth on the slow-adjusting gear is less than that on the fast-adjusting gear.

[0020] Two sets of driving sources can respectively drive the fast-adjusting gear and the slow-adjusting gear to rotate.

[0021] In the above technical solution, further, the adjustment portion further includes a locking assembly, and the locking assembly includes:

[0022] A locking rack, the locking rack being arranged on the sliding seat;

[0023] A locking tooth set is slidably arranged in the radial displacement groove along the vertical direction, and the locking tooth set can be engaged with the locking rack;

[0024] A screw hole is provided on the rotating disk along a vertical direction and is connected to the radial displacement groove;

[0025] A locking screw is threadedly connected to the screw hole, and a threaded end of the locking screw is connected to the locking tooth set.

[0026] In the above technical solution, the adjustment part further includes two sets of clutch assemblies, and transmission grooves are provided on the fast-adjusting gear and the slow-adjusting gear. Each set of clutch assemblies includes:

[0027] A rack, wherein the rack is arranged in the adjustment slot;

[0028] A fixed shaft, the fixed shaft being rotatably arranged on the frame and connected to a driving source;

[0029] The movable shaft is spaced apart from the fixed shaft in the vertical direction. The movable shaft can move relative to the fixed shaft in the vertical direction. When the fixed shaft rotates, it can drive the movable shaft to rotate. A transmission block that matches the transmission slot is provided at one end of the movable shaft. The transmission block is positioned opposite to the transmission slot. When the transmission block enters the transmission slot, the movable shaft can drive the corresponding gear to rotate.

[0030] The switching mechanism can drive the movable shaft to reciprocate in the vertical direction, so that the transmission block can enter and exit the transmission slot.

[0031] In the above technical solution, further, the switching mechanism includes:

[0032] The ring body is arranged on the movable shaft and can only rotate relative to the movable shaft;

[0033] A push block is arranged on the side of the ring body away from the transmission block, and the surface of the push block close to the ring body is an inclined surface, and the push block contacts the ring body;

[0034] a first spring, one end of the first spring being connected to the frame, and the other end of the first spring being connected to the ring body;

[0035] When the push block moves in the horizontal direction, the ring body can be pushed toward the transmission groove, and the first spring can be deformed.

[0036] In the above technical solution, further, the two groups of switching mechanisms are symmetrically distributed in the horizontal direction, and a switching selection member is provided between the two groups of switching mechanisms. The switching selection member can simultaneously drive the two push blocks to move in the same direction in the horizontal direction, so that when one transmission block enters the corresponding transmission slot, the other transmission block exits the corresponding transmission slot.

[0037] In the above technical solution, further, the switching selection element includes:

[0038] The switching wheel is rotatably arranged on the frame, and two sets of switching grooves are symmetrically arranged on the switching wheel with the axis as the center. Each set of switching grooves includes a proximal point, a distal point and a transition section, and the proximal point and the distal point are respectively located at the two ends of the transition section;

[0039] Two connecting rods, the two connecting rods are respectively connected to the two push blocks, the axes of the two connecting rods are on the same straight line as the center of the switching wheel, and the ends of the two connecting rods away from the corresponding push blocks are respectively in contact with the two sets of switching grooves;

[0040] Two groups of second springs, the two groups of second springs are respectively sleeved on the outside of the two connecting rods, one end of the two groups of second springs is respectively connected to the two push blocks, and the other ends of the two groups of second springs are connected to the frame;

[0041] When the contact point between the connecting rod and the switching slot moves from the proximal point to the distal point, the switching wheel pushes the connecting rod to move toward the end close to the corresponding push block and squeezes the second spring; when the contact point between the connecting rod and the switching slot moves from the distal point to the proximal point, the elastic force of the second spring pushes the connecting rod to move toward the end away from the corresponding push block; when the contact point of one connecting rod and the switching slot is at the proximal point, the contact point of the other connecting rod and the switching slot is at the distal point. At this time, the force exerted by the two connecting rods on the switching wheel is toward the axis of the switching wheel.

[0042] In the above technical solution, the steel bar bending test device further includes a mounting base, which is detachably connected to the rotating disk, and the sliding seat, fast-adjusting gear, slow-adjusting gear, driving source, and clutch assembly are all arranged on the mounting base.

[0043] The present invention also discloses a method for using the aforementioned steel bar bending test device for engineering inspection, which comprises the following steps:

[0044] Step 1: Clamp one end of the steel bar with the clamping portion, and position the other end of the steel bar between the fixing rod and the positioning rod, with the steel bar in contact with the fixing rod;

[0045] Step 2: Rotate the locking screw to separate the locking screw with the locking tooth group from the locking rack in the vertical direction. At this time, if the distance between the positioning rod and the steel bar is greater than the single adjustment distance of the quick-adjustment rack, the quick-adjustment gear is driven to rotate by the driving source, and the quick-adjustment gear drives the quick-adjustment rack to move so that the sliding seat brings the positioning rod to quickly approach the steel bar. When the distance between the positioning rod and the steel bar is less than the single adjustment distance of the quick-adjustment rack, the slow-adjustment gear is driven to rotate by the driving source, and the slow-adjustment gear drives the slow-adjustment rack to move so that the sliding seat brings the positioning rod to slowly approach the steel bar and makes the positioning rod contact with the steel bar; at this time, rotate the locking screw to make the locking screw bring the locking tooth group to engage with the locking rack in the vertical direction;

[0046] Step 3: Start the bending power source to drive the rotating disk to rotate the preset angle, so that the steel bar is bent to the preset angle;

[0047] Step 4: Rotate the locking screw so that the locking screw and the locking tooth group separate from the locking rack in the vertical direction, drive the quick-adjust gear to rotate through the driving source, and the quick-adjust gear drives the quick-adjust rack to move so that the sliding seat and the positioning rod quickly move away from the steel bar, then control the clamping part to release the steel bar, remove the steel bar and observe whether there are any defects in the bent part.

[0048] The beneficial effects of the present invention are:

[0049] 1. The spacing between the positioning rod and the fixed rod is adjusted by the adjustment part, and the adjustment part can perform rapid and slow adjustment on the positioning rod. In this way, when the distance to be adjusted of the positioning rod is large, the efficiency of the positioning rod position adjustment can be improved by the rapid adjustment of the adjustment part. When the distance to be adjusted of the positioning rod is small, the accuracy of the positioning rod position adjustment can be improved by the slow adjustment of the adjustment part, thereby ensuring the efficiency and accuracy of the spacing adjustment between the positioning rod and the fixed rod, so that the steel bar bending test device can adapt to steel bars of different specifications.

[0050] 2. By designing the adjustment part into an adjustment groove, a radial displacement groove, a sliding seat, a quick-adjustment rack, a quick-adjustment gear, a slow-adjustment rack, a slow-adjustment gear, and two sets of drive sources, when the quick-adjustment structure formed by the drive source, the quick-adjustment gear, and the quick-adjustment rack is started, the sliding seat can move quickly, and when the slow-adjustment structure formed by the drive source, the slow-adjustment gear, and the slow-adjustment rack is started, the sliding seat can move slowly. In this way, the quick-adjustment function and the slow-adjustment function of the adjustment part are realized through two independent drive structures, so that the structure of the adjustment part can be simpler and the failure rate is lower.

[0051] 3. By setting a locking component, after the position adjustment of the sliding seat is completed, the locking component can lock the sliding seat to limit the movement of the sliding seat, thereby ensuring the stability of the positioning rod during the steel bar bending process.

[0052] 4. By setting a clutch component to control the fast adjustment structure and the slow adjustment structure to be connected to the sliding seat in an alternative manner, it is possible to avoid serious consequences caused by accidental activation of one adjustment structure when the other adjustment structure is working.

[0053] 5. By designing the switching mechanism as a combination of a ring body, a push block, and a first spring, the connection and disconnection between the adjustment structure and the sliding seat can be achieved by simply driving the push block to move in the horizontal direction and combining it with the elastic support of the first spring. The structure is simple and maintenance is convenient.

[0054] 6. By setting a switching selection member and designing the switching selection member to be a combination of a switching wheel, two connecting rods, and two sets of second springs, only the switching wheel needs to be rotated to simultaneously drive the two sets of switching mechanisms to achieve switching between the two adjustment structures. The structure is ingenious and the operation efficiency is high.

[0055] 7. The sliding seat, quick-adjusting gear, slow-adjusting gear, driving source and clutch assembly are installed by setting a mounting base, and the mounting base is detachably connected to the rotating disk. In this way, the structure of the adjustment part is arranged on the mounting base. The adjustment part can be inspected and repaired by simply removing the mounting base, which is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0057] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0058] Figure 2 It is a perspective view of the main viewing direction of the present invention.

[0059] Figure 3 This is a schematic diagram of the top three-dimensional structure of the rotating disk after it is connected to the mounting base in the present invention.

[0060] Figure 4 This is a schematic diagram of the bottom three-dimensional structure of the rotating disk after it is connected to the mounting base in the present invention.

[0061] Figure 5 This is a schematic diagram of the mounting base and the rotating disk in the present invention in a separated state.

[0062] Figure 6 It is a schematic diagram of the bottom three-dimensional structure of the rotating disk in the present invention.

[0063] Figure 7 It is a schematic diagram of the locking component structure of the present invention.

[0064] Figure 8 Schematic diagram of the mounting base and components thereon in the present invention.

[0065] Figure 9 It is a schematic diagram of the three-dimensional structure of the top of the adjustment part in the present invention.

[0066] Figure 10 It is a schematic diagram of the three-dimensional structure of the bottom of the adjustment part in the present invention.

[0067] Figure 11 This is a schematic diagram of the bottom three-dimensional structure after the adjusting portion hides the sliding seat in the present invention.

[0068] Figure 12 This is a schematic diagram of the main structure of the adjusting portion after the sliding seat is hidden in the present invention.

[0069] Figure 13 This is a schematic diagram of the structure of the present invention when the adjusting portion hides the sliding seat and is viewed from above.

[0070] Figure 14 It is a schematic diagram of the structure of the fixed shaft and the movable shaft in the present invention.

[0071] Figure 15 This is a schematic diagram of the switching wheel structure in the present invention.

[0072] The marks in the figure are:

[0073] 1. Device body; 2. Clamping part; 3. Rotating disk; 301. Adjustment slot; 302. Radial displacement slot; 4. Fixing rod; 5. Positioning rod; 6. Bending power source; 7. Adjustment part; 701. Sliding seat; 702. Quick-adjustment rack; 703. Quick-adjustment gear; 704. Slow-adjustment rack; 705. Slow-adjustment gear; 706. Drive source; 8. Locking assembly; 801. Locking rack; 802. Locking gear set; 803. Screw hole; 804. Locking screw Rod; 901, transmission groove; 902, frame; 903, movable shaft; 9031, transmission block; 904, fixed shaft; 905, ring body; 906, push block; 9061, avoidance groove; 907, first spring; 10, switching wheel; 1001, proximal point; 1002, apocentric point; 1003, transition section; 11, connecting rod; 12, second spring; 13, mounting base; X, horizontal direction; Y, vertical direction; 100, steel bar. DETAILED DESCRIPTION

[0074] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0075] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0076] Example 1

[0077] like Figure 1-Figure 2 As shown, the embodiment of the present application provides a steel bar bending test device for engineering inspection, comprising: a device body 1, a clamping part 2, a rotating disk 3, a positioning rod 5, a bending power source 6 and an adjustment part 7;

[0078] See also Figure 1 The device body 1 is provided with a clamping portion 2, which can clamp one end of the steel bar 100. Any structure that can clamp the steel bar 100 in the prior art can be used as the clamping portion 2 in this embodiment;

[0079] See also Figure 1 The rotating disk 3 is provided on the device body 1, the rotating disk 3 is located on one side of the clamping portion 2, and a fixing rod 4 is provided in the middle of the rotating disk 3;

[0080] The positioning rod 5 is provided on the rotating disk 3. The positioning rod 5 and the fixing rod 4 are spaced apart in the radial direction of the rotating disk 3. The position of the positioning rod 5 on the rotating disk 3 can be adjusted.

[0081] See also Figure 2 The bending power source 6 is provided on the device body 1 and is connected to the rotating disk 3. The bending power source 6 can drive the rotating disk 3 to rotate. The bending power source 6 is generally an electronically driven device and needs to be able to accurately control the rotation angle. Any structure in the prior art that can accurately drive the rotating disk 3 to rotate a certain angle can be used as the bending power source 6 in this embodiment, such as a servo motor.

[0082] The adjusting portion 7 is provided on the rotating disk 3. The adjusting portion 7 can quickly adjust the position of the positioning rod 5 along the radial direction of the rotating disk 3, and slowly adjust the position of the positioning rod 5 along the radial direction of the rotating disk 3. The rapid adjustment and slow adjustment here can be understood as the rapid adjustment being faster than the slow adjustment in adjusting the position of the positioning rod 5.

[0083] Specifically, the single adjustment distance in the fast adjustment mode is greater than the single adjustment distance in the slow adjustment mode; taking the single adjustment distance of 2 cm in the fast adjustment and 1 mm in the slow adjustment as an example, when adjusting the position of the positioning rod 5, if the distance between the positioning rod 5 and the steel bar 100 is 4.5 cm, the adjustment part 7 is first used to adjust two adjustment distances in the fast adjustment mode. At this time, the distance between the positioning rod 5 and the steel bar 100 is 0.5 cm. The fast adjustment mode can no longer adjust a complete adjustment distance. At this time, the adjustment part 7 is used to adjust five adjustment distances in the slow adjustment mode to make the positioning rod 5 contact with the steel bar 100.

[0084] In this embodiment, the efficiency of the position adjustment of the positioning rod 5 can be improved through the rapid adjustment of the adjustment part 7, and the accuracy of the position adjustment of the positioning rod 5 can be improved through the slow adjustment of the adjustment part 7, thereby ensuring the efficiency and accuracy of the spacing adjustment between the positioning rod 5 and the fixed rod 4, so that the steel bar bending test device can adapt to steel bars 100 of different specifications.

[0085] Example 2

[0086] This embodiment further discloses a structure of the adjustment part 7 based on the embodiment 1;

[0087] like Figure 3-Figure 9 As shown, the adjustment part 7 includes: an adjustment slot 301, a radial displacement slot 302, a sliding seat 701, a quick adjustment rack 702, a quick adjustment gear 703, a slow adjustment rack 704, a slow adjustment gear 705 and two sets of driving sources 706;

[0088] See also Figure 4 and Figure 6 , the adjustment groove 301 is provided on the bottom surface of the rotating disk 3;

[0089] See also Figure 5 and Figure 6 , the radial displacement groove 302 is provided on the rotating disk 3, and the radial displacement groove 302 is communicated with the adjustment groove 301;

[0090] See also Figure 3 and Figure 5 The sliding seat 701 is arranged in the adjustment groove 301 and slides along the radial direction of the rotating disk 3. The lower end of the positioning rod 5 passes through the radial displacement groove 302 and is connected to the sliding seat 701.

[0091] See also Figure 8 or Figure 9 , the quick-adjusting rack 702 is set on the sliding seat 701; the quick-adjusting gear 703 is rotatably set in the adjustment slot 301, and the quick-adjusting gear 703 is meshed with the quick-adjusting rack 702;

[0092] See also Figure 8 or Figure 9 , the slow-adjusting rack 704 is provided on the sliding seat 701; the slow-adjusting gear 705 is rotatably provided in the adjustment slot 301, the slow-adjusting gear 705 is meshedly connected with the slow-adjusting rack 704, and the number of teeth of the slow-adjusting gear 705 is less than the number of teeth of the fast-adjusting gear 703;

[0093] The two sets of drive sources 706 can respectively drive the fast-adjusting gear 703 and the slow-adjusting gear 705 to rotate. The two sets of drive sources 706 can have the same structure or different structures. The two sets of drive sources 706 can have a direct drive structure, such as an electronically driven motor, a manually driven hand wheel, etc., or an indirect drive structure, such as a worm gear mechanism, a reduction gear mechanism, etc.

[0094] In this embodiment, the driving source 706, the quick-adjusting gear 703, and the quick-adjusting rack 702 form a quick-adjusting structure, and the driving source 706, the slow-adjusting gear 705, and the slow-adjusting rack 704 form a slow-adjusting structure; the driving source 706 can select a structure with a locking function, that is, the output end is not locked when the driving source 706 is driving, and the output end is locked when the driving source 706 stops driving. In this way, after the position adjustment of the sliding seat 701 is completed, the driving source 706 can lock the corresponding gear and rack, thereby locking the sliding seat 701, but during the adjustment process of the sliding seat 701, the quick-adjusting structure and the slow-adjusting structure need to be connected to the sliding seat 701 in an alternative manner to ensure that when one driving source 706 drives the sliding seat 701, the other driving source 706 will not lock the sliding seat 701.

[0095] Example 3

[0096] In this embodiment, based on the embodiment 2, a locking assembly 8 is further provided in the adjustment portion 7;

[0097] In this embodiment, the locking assembly 8 includes: a locking rack 801, a locking tooth set 802, a screw hole 803 and a locking screw 804;

[0098] See also Figure 8 , the locking rack 801 is provided on the sliding seat 701;

[0099] See also Figure 6 and Figure 7 , the locking tooth set 802 is slidably arranged in the radial displacement groove 302 along the vertical direction Y, and the locking tooth set 802 can engage with the locking rack 801;

[0100] See also Figure 7 , the screw hole 803 is provided on the rotating disk 3 along the vertical direction Y, and the screw hole 803 is communicated with the radial displacement groove 302; the locking screw 804 is threadedly connected to the screw hole 803, and the threaded end of the locking screw 804 is connected to the locking tooth group 802;

[0101] In this embodiment, the driving source 706 can be selected to have a structure without a locking function. When the position of the sliding seat 701 needs to be adjusted, the rotating locking screw 804 carries the locking tooth group 802 to separate from the locking rack 801 in the vertical direction Y, thereby unlocking the sliding seat 701. At this time, the position of the sliding seat 701 can be adjusted; after the position adjustment of the sliding seat 701 is completed, the rotating locking screw 804 carries the locking tooth group 802 to engage with the locking rack 801 in the vertical direction Y, thereby locking the sliding seat 701. At this time, the sliding seat 701 is stable in its current position.

[0102] Example 4

[0103] Based on Example 2, this embodiment further optimizes the structure of the adjustment part 7;

[0104] See also Figure 10 or Figure 11 , the adjustment part 7 also includes two sets of clutch components, and a transmission groove 901 is provided on the fast-adjusting gear 703 and the slow-adjusting gear 705;

[0105] In this embodiment, each clutch assembly includes: a frame 902, a fixed shaft 904, a movable shaft 903 and a switching mechanism;

[0106] The frame 902 is disposed in the adjustment slot 301. The frame 902 in this embodiment can be understood as a structure fixed relative to the adjustment slot 301. That is, the frame 902 does not refer to a bracket, but rather any structure fixed relative to the adjustment slot 301. For example, the fast-adjusting gear 703 and the slow-adjusting gear 705 in Example 2 can also be rotatably disposed on the frame 902.

[0107] See also Figure 10 or Figure 11 or Figure 12 , the fixed shaft 904 is rotatably disposed on the frame 902 , and the fixed shaft 904 is connected to the driving source 706 ;

[0108] See also Figure 14 The movable shaft 903 and the fixed shaft 904 are spaced apart along the vertical direction Y, and the movable shaft 903 can move relative to the fixed shaft 904 in the vertical direction Y, and the fixed shaft 904 can drive the movable shaft 903 to rotate when it rotates. Specifically, an axis shifting groove is provided at the end of the movable shaft 903 close to the fixed shaft 904, and one end of the fixed shaft 904 is axially slidably connected to the axis shifting groove, and a clamping groove is provided on the side wall of the axis shifting groove, and a clamping block that cooperates with the clamping groove is provided on the outer wall of the fixed shaft 904 located in the axis shifting groove. The clamping block can slide along the axial direction of the fixed shaft 904 in the clamping groove, so that the movable shaft 903 can move axially relative to the fixed shaft 904, but cannot rotate circumferentially, so that the fixed shaft 904 can drive the movable shaft 903 to rotate when it rotates;

[0109] See also Figure 14 , one end of the movable shaft 903 is provided with a transmission block 9031 adapted to the transmission slot 901; Figure 11 , the transmission block 9031 is opposite to the transmission slot 901. When the transmission block 9031 enters the transmission slot 901, the movable shaft 903 can drive the corresponding gear to rotate. Figure 11, the transmission block 9031 corresponding to the slow-adjusting gear 705 enters the transmission groove 901, and the driving source 706 can drive the slow-adjusting gear 705 to rotate, while the transmission block 9031 corresponding to the fast-adjusting gear 703 exits the transmission groove 901, and the driving source 706 cannot drive the fast-adjusting gear 703 to rotate; the transmission block 9031 can be designed as a polygonal prism, and the contour of the transmission groove 901 is adapted to the transmission block 9031, so that after the corresponding gear is driven by the sliding seat 701 to rotate a certain angle, the transmission block 9031 can still cooperate with the transmission groove 901; in addition, a chamfer can be provided at the end of the transmission block 9031, and a chamfer can be provided at the opening of the transmission groove 901, so that the transmission block 9031 can enter the transmission groove 901 more easily;

[0110] The switching mechanism can drive the movable shaft 903 to reciprocate along the vertical direction Y, so that the transmission block 9031 enters and exits the transmission slot 901;

[0111] In this embodiment, the switching mechanism can be a group, and the switching mechanism can drive the two transmission blocks 9031 respectively; the switching mechanism can also be two groups, and the two groups of switching mechanisms can drive the two transmission blocks 9031 separately.

[0112] Example 5

[0113] This embodiment further discloses a structure of a switching mechanism based on embodiment 4;

[0114] The switching mechanism includes: a ring body 905, a push block 906 and a first spring 907;

[0115] See also Figure 11 The ring body 905 is arranged on the movable shaft 903. The ring body 905 can only rotate relative to the movable shaft 903, but cannot move axially relative to the movable shaft 903. When the movable shaft 903 moves axially relative to the fixed shaft 904, the ring body 905 will move axially along with the movable shaft 903.

[0116] The push block 906 is arranged on the side of the ring body 905 away from the transmission block 9031. The surface of the push block 906 close to the ring body 905 is an inclined surface, and the push block 906 is in contact with the ring body 905.

[0117] One end of the first spring 907 is connected to the frame 902, and the other end of the first spring 907 is connected to the ring body 905;

[0118] When the push block 906 moves in the horizontal direction X, it can push the ring body 905 toward the transmission groove 901 and cause the first spring 907 to deform.

[0119] For details, please refer to Figure 12, taking the orientation sequence and the state at this time in the figure as an example, the transmission block 9031 on the left is separated from the transmission groove 901, and the transmission block 9031 on the right is located in the transmission groove 901. In the process of the push block 906 on the left moving to the left, the push block 906 can push the ring body 905 upward, so that the ring body 905 moves upward with the movable shaft 903, and pushes the transmission block 9031 into the transmission groove 901. In this process, the first spring 907 is squeezed, and finally the first spring 907 presents the state on the right side of the figure; in the process of the push block 906 on the right moving to the left, a short gap appears between the push block 906 and the ring body 905. At this time, the elastic force of the first spring 907 pushes the ring body 905 downward, so that the ring body 905 moves downward with the movable shaft 903, and pulls the transmission block 9031 out of the transmission groove 901.

[0120] Example 6

[0121] Based on Example 5, this embodiment further optimizes the structure of the switching mechanism;

[0122] In this embodiment, the two sets of switching mechanisms are symmetrically distributed in the horizontal direction X. A switching selection member is provided between the two sets of switching mechanisms. The switching selection member can simultaneously drive the two push blocks 906 to move in the same direction in the horizontal direction X, so that when one transmission block 9031 enters the corresponding transmission slot 901, the other transmission block 9031 exits the corresponding transmission slot 901.

[0123] By setting the switch selection member, only the switch selection member needs to be controlled to drive two sets of switch mechanisms at the same time, making the operation more efficient;

[0124] Specifically, the switching selection member includes: a switching wheel 10, two connecting rods 11 and two sets of second springs 12;

[0125] See also Figure 11 or Figure 12 The switching wheel 10 is rotatably mounted on the frame 902. The rotation between the switching wheel 10 and the frame 902 may have a certain resistance. Figure 15 Two groups of switching grooves are symmetrically arranged on the switching wheel 10 with the axis as the center. Each group of switching grooves includes a proximal point 1001, a distal point 1002 and a transition section 1003. The proximal point 1001 and the distal point 1002 are respectively located at the two ends of the transition section 1003;

[0126] See also Figure 13 , two connecting rods 11 are connected to the two push blocks 906 respectively, the axes of the two connecting rods 11 and the center of the switching wheel 10 are located on the same straight line, and the ends of the two connecting rods 11 away from the corresponding push blocks 906 are in contact with the two sets of switching grooves respectively;

[0127] The two sets of second springs 12 are respectively sleeved on the outside of the two connecting rods 11, one end of the two sets of second springs 12 is respectively connected to the two push blocks 906, and the other end of the two sets of second springs 12 is connected to the frame 902;

[0128] When the contact point between the connecting rod 11 and the switching slot moves from the proximal point 1001 to the distal point 1002, the switching wheel 10 pushes the connecting rod 11 to move toward the end close to the corresponding push block 906 and squeezes the second spring 12; when the contact point between the connecting rod 11 and the switching slot moves from the distal point 1002 to the proximal point 1001, the elastic force of the second spring 12 pushes the connecting rod 11 to move toward the end away from the corresponding push block 906; when the contact point of one connecting rod 11 and the switching slot is at the proximal point 1001, the contact point of the other connecting rod 11 and the switching slot is at the distal point 1002. At this time, the forces exerted by the two connecting rods 11 on the switching wheel 10 are toward the axis of the switching wheel 10;

[0129] by Figure 13 Taking the orientation sequence and the state at this time as an example, at this time, the end of the connecting rod 11 on the left is in contact with the proximal point 1001 of the switching slot, and the second spring 12 on the left is in a squeezed state. The connecting rod 11 on the left gives the switching wheel 10 a rightward thrust, which points to the axis of the switching wheel 10 and does not drive the switching wheel 10 to rotate; and the end of the connecting rod 11 on the right is in contact with the distal point 1002 of the switching slot. At this time, the second spring 12 on the right is in an extended state, and the connecting rod 11 on the right gives the switching wheel 10 a leftward thrust, which points to the axis of the switching wheel 10 and does not drive the switching wheel 10 to rotate. At this time, when there is no external force driving the switching wheel 10, the switching wheel 10 will not rotate;

[0130] exist Figure 13 In the illustrated state, when the switching wheel 10 is rotated counterclockwise, the contact point between the end of the left connecting rod 11 and the switching wheel 10 moves toward the distal point 1002, while the contact point between the end of the right connecting rod 11 and the switching wheel 10 moves toward the proximal point 1001.

[0131] In this embodiment, the switch wheel 10 can be manually driven to rotate by setting a manual knob. The setting of the manual knob is as follows: Figure 4 shown.

[0132] Example 7

[0133] Based on Example 4, this embodiment further optimizes the structure of the steel bar bending test device;

[0134] like Figure 4-Figure 5As shown, the steel bar bending test device also includes a mounting base 13, which is detachably connected to the rotating disk 3. Any connection method that can achieve a stable and detachable connection between the mounting base 13 and the rotating disk 3 in the prior art can be used as a connection method between the mounting base 13 and the rotating disk 3 in this embodiment. The sliding base 701, the fast-adjusting gear 703, the slow-adjusting gear 705, the driving source 706, and the clutch assembly are all arranged on the mounting base 13;

[0135] In this embodiment, the structures of the adjusting portion 7 are all arranged on the mounting base 13 , and the adjusting portion 7 can be inspected and repaired by simply removing the mounting base 13 , which is convenient for operation.

[0136] Example 8

[0137] This embodiment discloses a method for using the steel bar bending test device in the aforementioned embodiment, which method includes the following steps:

[0138] Step 1: Clamp one end of the steel bar 100 with the clamping portion 2, and position the other end of the steel bar 100 between the fixing rod 4 and the positioning rod 5, with the steel bar 100 in contact with the fixing rod 4;

[0139] 801 , and the locking screw 804 is rotated so that the locking screw 804 and the locking tooth group 802 are separated from the locking rack 801 in the vertical direction Y. At this time, if the distance between the positioning rod 5 and the steel bar 100 is greater than the single adjustment distance of the quick-adjustment rack 702, the quick-adjustment gear 703 is driven to rotate by the driving source 706, and the quick-adjustment gear 703 drives the quick-adjustment rack 702 to move so that the sliding seat 701 and the positioning rod 5 quickly approach the steel bar 100. When the distance between the positioning rod 5 and the steel bar 100 is less than the single adjustment distance of the quick-adjustment rack 702, the slow-adjustment gear 705 is driven to rotate by the driving source 706, and the slow-adjustment gear 705 drives the slow-adjustment rack 704 to move so that the sliding seat 701 and the positioning rod 5 slowly approach the steel bar 100 and make the positioning rod 5 contact with the steel bar 100; at this time, the locking screw 804 is rotated so that the locking screw 804 and the locking tooth group 802 are engaged with the locking rack 801 in the vertical direction Y;

[0140] Step 3: Start the bending power source 6 to drive the rotating disk 3 to rotate a preset angle, so that the steel bar 100 is bent to a preset angle;

[0141] Step 4: Rotate the locking screw 804 so that the locking screw 804 and the locking tooth group 802 are separated from the locking rack 801 along the vertical direction Y, and the quick-adjustment gear 703 is driven to rotate by the driving source 706. The quick-adjustment gear 703 drives the quick-adjustment rack 702 to move so that the sliding seat 701 and the positioning rod 5 are quickly moved away from the steel bar 100. Then, the clamping part 2 is controlled to release the steel bar 100, and the steel bar 100 is removed to observe whether there are defects in the bent part, so as to judge the plastic properties of the steel bar 100.

[0142] By using this steel bar bending test device, the distance between the fixing rod 4 and the positioning rod 5 can be adjusted over a large range, and it has a fast adjustment process and a slow adjustment process, with high adjustment efficiency and high adjustment accuracy. It can adapt to the bending of steel bars of different specifications 100 and has a wide range of applications.

[0143] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A steel bar bending test device for engineering inspection, characterized in that: include: A device body, wherein the device body is provided with a clamping portion, and the clamping portion can clamp one end of the steel bar; A rotating disk, the rotating disk is provided on the device body, the rotating disk is located on one side of the clamping portion, and a fixing rod is provided in the middle of the rotating disk; A positioning rod, the positioning rod being arranged on the rotating disk, the positioning rod and the fixing rod being spaced apart in the radial direction of the rotating disk; a bending power source, wherein the bending power source can drive the rotating disk to rotate; an adjusting portion, wherein the adjusting portion is capable of quickly adjusting the position of the positioning rod along the radial direction of the rotating disk, and slowly adjusting the position of the positioning rod along the radial direction of the rotating disk; The adjustment unit includes: An adjusting groove, the adjusting groove being arranged on the bottom surface of the rotating disk; a radial displacement groove, the radial displacement groove being provided on the rotating disk and being in communication with the adjusting groove; a sliding seat, the sliding seat being arranged in the adjusting groove and slidingly sliding along the radial direction of the rotating disk, the lower end of the positioning rod passing through the radial displacement groove and then connected to the sliding seat; A quick-adjusting rack, the quick-adjusting rack being arranged on the sliding seat; A quick-adjusting gear, the quick-adjusting gear being disposed in the adjusting slot and meshingly connected with the quick-adjusting rack; A slowly-adjusting rack, the slowly-adjusting rack being arranged on the sliding seat; A slow-adjusting gear, the slow-adjusting gear being disposed in the adjusting slot, the slow-adjusting gear being meshed with the slow-adjusting rack, the number of teeth on the slow-adjusting gear being less than the number of teeth on the fast-adjusting gear; Two sets of driving sources, the two sets of driving sources can respectively drive the fast-adjusting gear and the slow-adjusting gear to rotate; The adjusting portion further includes a locking assembly, which includes: a locking rack, the locking rack being arranged on the sliding seat; a locking tooth set, the locking tooth set being slidably disposed in the radial displacement groove along a vertical direction and being capable of meshing with the locking rack; a screw hole, the screw hole being arranged on the rotating disk along a vertical direction and being communicated with the radial displacement groove; A locking screw is threadedly connected to the screw hole, and a threaded end of the locking screw is connected to the locking tooth set.

2. A steel bar bending test device for engineering inspection according to claim 1, characterized in that: The adjustment part further includes two sets of clutch assemblies. The fast-adjusting gear and the slow-adjusting gear are both provided with transmission grooves. Each set of the clutch assemblies includes: a frame, the frame being arranged in the adjustment slot; a fixed shaft, the fixed shaft being rotatably disposed on the frame and connected to the driving source; A movable shaft, wherein the movable shaft and the fixed shaft are spaced apart in the vertical direction, the movable shaft can move relative to the fixed shaft in the vertical direction, and the fixed shaft can drive the movable shaft to rotate when rotating. A transmission block adapted to the transmission slot is provided at one end of the movable shaft, the transmission block is positioned opposite to the transmission slot, and when the transmission block enters the transmission slot, the movable shaft can drive the corresponding gear to rotate; A switching mechanism can drive the movable shaft to reciprocate in a vertical direction, so that the transmission block can enter and exit the transmission groove.

3. A steel bar bending test device for engineering inspection according to claim 2, characterized in that: The switching mechanism includes: a ring body, the ring body being arranged on the movable shaft and being capable of rotating only relative to the movable shaft; A push block is provided on a side of the ring body away from the transmission block, a surface of the push block close to the ring body is an inclined surface, and the push block contacts the ring body; a first spring, one end of the first spring being connected to the frame, and the other end of the first spring being connected to the ring body; During the horizontal movement of the push block, the ring body can be pushed toward the transmission groove, and the first spring can be deformed.

4. A steel bar bending test device for engineering inspection according to claim 3, characterized in that: The two groups of switching mechanisms are symmetrically distributed in the horizontal direction. A switching selection member is provided between the two groups of switching mechanisms. The switching selection member can simultaneously drive the two push blocks to move in the same direction in the horizontal direction, so that when one transmission block enters the corresponding transmission slot, the other transmission block exits the corresponding transmission slot.

5. A steel bar bending test device for engineering inspection according to claim 4, characterized in that: The switching selection element includes: a switching wheel rotatably disposed on the frame, wherein the switching wheel has two sets of switching slots symmetrically disposed about the axis, each set of the switching slots including a proximal point, a distal point, and a transition section, wherein the proximal point and the distal point are respectively located at two ends of the transition section; Two connecting rods, the two connecting rods are respectively connected to the two push blocks, the axes of the two connecting rods and the center of the switching wheel are located on the same straight line, and the ends of the two connecting rods away from the corresponding push blocks are respectively in contact with the two groups of switching grooves; Two groups of second springs, the two groups of second springs are respectively sleeved on the outside of the two connecting rods, one end of the two groups of second springs are respectively connected to the two push blocks, and the other ends of the two groups of second springs are connected to the frame; When the contact point between the connecting rod and the switching slot moves from the proximal point to the distal point, the switching wheel pushes the connecting rod to move toward the end close to the corresponding push block and squeezes the second spring; when the contact point between the connecting rod and the switching slot moves from the distal point to the proximal point, the elastic force of the second spring pushes the connecting rod to move toward the end away from the corresponding push block; when the contact point of one connecting rod and the switching slot is at the proximal point, the contact point of the other connecting rod and the switching slot is at the distal point, and at this time, the force of the two connecting rods on the switching wheel is toward the axis of the switching wheel.

6. A steel bar bending test device for engineering inspection according to any one of claims 2 to 4, characterized in that: The steel bar bending test device also includes a mounting base, which is detachably connected to the rotating disk. The sliding seat, fast-adjusting gear, slow-adjusting gear, driving source, and clutch assembly are all arranged on the mounting base.

7. A method for using a steel bar bending test device, applicable to the steel bar bending test device for engineering inspection according to claim 1, characterized in that: The following steps are involved: Step 1: Clamp one end of the steel bar with the clamping portion, and position the other end of the steel bar between the fixing rod and the positioning rod, with the steel bar in contact with the fixing rod; Step 2: Rotate the locking screw to separate the locking screw with the locking tooth group from the locking rack in the vertical direction. At this time, if the distance between the positioning rod and the steel bar is greater than the single adjustment distance of the quick-adjustment rack, the quick-adjustment gear is driven to rotate by the driving source, and the quick-adjustment gear drives the quick-adjustment rack to move so that the sliding seat brings the positioning rod to quickly approach the steel bar. When the distance between the positioning rod and the steel bar is less than the single adjustment distance of the quick-adjustment rack, the slow-adjustment gear is driven to rotate by the driving source, and the slow-adjustment gear drives the slow-adjustment rack to move so that the sliding seat brings the positioning rod to slowly approach the steel bar and makes the positioning rod contact with the steel bar; at this time, rotate the locking screw to make the locking screw bring the locking tooth group to engage with the locking rack in the vertical direction; Step 3: Start the bending power source to drive the rotating disk to rotate the preset angle, so that the steel bar is bent to the preset angle; Step 4: Rotate the locking screw so that the locking screw and the locking tooth group separate from the locking rack in the vertical direction, drive the quick-adjust gear to rotate through the driving source, and the quick-adjust gear drives the quick-adjust rack to move so that the sliding seat and the positioning rod quickly move away from the steel bar, then control the clamping part to release the steel bar, remove the steel bar and observe whether there are any defects in the bent part.

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