Steel bar bending test device for engineering detection

Abstract

The invention belongs to the technical field of engineering detection equipment, and particularly relates to a steel bar bending test device for engineering detection, the steel bar bending test device comprises a device body, a rotating disc, a positioning rod, a bending power source and an adjusting part, the device body is provided with a clamping part, and the clamping part can clamp one end of a steel bar; the rotating disc is arranged on the device body and located on one side of the clamping part, and a fixing rod is arranged in the middle of the rotating disc; the positioning rods and the fixed rods are distributed at intervals in the radial direction of the rotating disc; the bending power source can drive the rotating disc to rotate; the adjusting part can quickly adjust the position of the positioning rod in the radial direction of the rotating disc and slowly adjust the position of the positioning rod in the radial direction of the rotating disc; compared with the prior art, the steel bar bending test device can adjust the distance between the fixing rod and the positioning rod in a large range, has a rapid adjustment process and a slow adjustment process, and is high in adjustment efficiency and adjustment precision.

Description

Technical Field

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

[0002] The steel bar bending test is an important test method in construction engineering testing, mainly used to evaluate the plastic deformation ability and quality of steel bars. The purpose of the test is to check the plastic properties of the steel bars, verify whether there are surface defects such as cracks and flaws in the steel bars, and confirm whether the material of the steel bars meets the requirements of engineering design.

[0003] The existing steel bar bending test device includes a clamping part, a rotating disk, a fixed rod and a positioning rod. The clamping part is used to fix one end of the steel bar. The fixed rod is fixed on the rotating disk. A plurality of mounting holes are arranged radially on the rotating disk to mount the positioning rod. The positioning rod and the fixed rod cooperate to position the movable end of the steel bar. By installing the positioning rod in different mounting holes, the distance between the positioning rod and the fixed rod is adjusted to adapt to the positioning of steel bars with different diameters. Although this method of adjusting the distance between the positioning rod and the fixed rod is simple, the adjustment accuracy is low and can only be roughly adjusted. Since there are many common steel bar size specifications, it is difficult for the existing steel bar bending test device to adapt and bend all specifications of steel bars, and the applicable range is small. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel bar bending test device for engineering testing in view of the above existing technical problems. This steel bar bending test device can widely adjust the distance between the fixed rod and the positioning rod, 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 testing, including:

[0006] A device body, on which a clamping part is arranged, and the clamping part can clamp one end of the steel bar;

[0007] A rotating disk, which is arranged on the device body, is located on one side of the clamping part, and a fixed rod is arranged in the middle of the rotating disk;

[0008] A positioning rod, which is arranged on the rotating disk, and the positioning rod and the fixed rod are spaced apart radially on the rotating disk;

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

[0010] An adjusting part, which 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. First, the positioning rod is quickly moved closer to the steel bar by the quick adjustment of the adjusting part. When the single adjustment distance of the quick adjustment is greater than the distance between the positioning rod and the steel bar at this time, the positioning rod is moved closer to the steel bar and brought into contact with the steel bar by the slow adjustment of the adjusting part. At this time, the bending power source is started to drive the rotating disc to rotate, and the rotating disc, the fixed rod and the positioning rod cooperate to bend the steel bar by a preset angle. Then, the steel bar is taken off and the bent surface is observed for defects, so as to judge the plastic properties of the steel bar.

[0012] In the above technical solution, further, the adjusting part includes:

[0013] An adjusting groove is arranged on the bottom surface of the rotating disc;

[0014] A radial movement groove is arranged on the rotating disc, and the radial movement groove is communicated with the adjusting groove;

[0015] A sliding seat is slidably arranged in the adjusting groove along the radial direction of the rotating disc, and the lower end of the positioning rod passes through the radial movement groove and is connected to the sliding seat;

[0016] A quick adjustment rack is arranged on the sliding seat;

[0017] A quick adjustment gear is arranged in the adjusting groove, and the quick adjustment gear is meshed and connected with the quick adjustment rack;

[0018] A slow adjustment rack is arranged on the sliding seat;

[0019] A slow adjustment gear is arranged in the adjusting groove, and the slow adjustment gear is meshed and connected with the slow adjustment rack. The number of teeth of the slow adjustment gear is less than that of the quick adjustment gear;

[0020] Two sets of driving sources can respectively drive the quick adjustment gear and the slow adjustment gear to rotate.

[0021] In the above technical solution, further, the adjusting part further includes a locking component, and the locking component includes:

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

[0023] A locking tooth group is slidably arranged in the radial movement groove along the vertical direction, and the locking tooth group can be meshed with the locking rack;

[0024] A screw hole is arranged on the rotating disc along the vertical direction, and the screw hole is communicated with the radial movement groove;

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

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

[0027] A frame, which is arranged in the adjustment groove;

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

[0029] A movable shaft, which is spaced 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. One end of the movable shaft is provided with a transmission block adapted to the transmission groove. The transmission block is opposite to the position of the transmission groove. When the transmission block enters the transmission groove, the movable shaft can drive the corresponding gear to rotate;

[0030] A switching mechanism, which can drive the movable shaft to reciprocate in the vertical direction to realize the transmission block entering and exiting the transmission groove.

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

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

[0033] A push block, which is arranged on the side of the ring body away from the transmission block. The surface of the push block close to the ring body is an inclined surface, and the push block is in contact with the ring body;

[0034] A first spring, one end of which is connected to the frame and the other end is connected to the ring body;

[0035] During the process of the push block moving in the horizontal direction, it can push the ring body towards the direction close to the transmission groove and cause the first spring to deform.

[0036] In the above technical solution, further, the two sets of switching mechanisms are symmetrically distributed in the horizontal direction. A switching selector is arranged between the two sets of switching mechanisms. The switching selector can drive the two push blocks to move in the same direction in the horizontal direction at the same time, so that when one transmission block enters the corresponding transmission groove, the other transmission block exits the corresponding transmission groove.

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

[0038] A switching wheel, which is rotatably arranged on the frame. 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 near-center point, a far-center point and a transition section. The near-center point and the far-center point are respectively located at both ends of the transition section;

[0039] Two connecting rods, the two connecting rods are respectively connected to 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 two groups of switching slots;

[0040] Two groups of second springs, the two groups of second springs are respectively sleeved outside the two connecting rods, one ends 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 both connected to the frame;

[0041] During the process that the contact point between the connecting rod and the switching slot moves from the near-center point to the far-center point, the switching wheel pushes the connecting rod to move towards the end close to the corresponding push block and compresses the second spring; during the process that the contact point between the connecting rod and the switching slot moves from the far-center point to the near-center point, the elastic force of the second spring pushes the connecting rod to move towards the end away from the corresponding push block; when the contact point of one connecting rod with the switching slot is at the near-center point, the contact point of the other connecting rod with the switching slot is at the far-center point, and at this time, the acting forces of the two connecting rods on the switching wheel are towards the axis of the switching wheel.

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

[0043] The present invention also discloses a using method suitable for the steel bar bending test device for the aforementioned engineering detection, and the using method includes the following steps:

[0044] Step 1: Clamp one end of the steel bar through the clamping part, and make the other end of the steel bar located between the fixed rod and the positioning rod, and the steel bar is in contact with the fixed rod;

[0045] Step 2: Rotate the locking screw to make the locking screw drive the locking tooth group to separate 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, then drive the quick adjustment gear to rotate through the driving source, the quick adjustment gear drives the quick adjustment rack to move so that the sliding seat drives 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, then drive the slow adjustment gear to rotate through the driving source, the slow adjustment gear drives the slow adjustment rack to move so that the sliding seat drives the positioning rod to slowly approach the steel bar and make the positioning rod in contact with the steel bar; at this time, rotate the locking screw to make the locking screw drive 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 a preset angle, so that the steel bar is bent to a preset angle.

[0047] Step 4: Rotate the locking screw to make the locking screw drive the locking tooth group to separate from the locking rack in the vertical direction. Drive the quick adjustment gear to rotate through the driving source, and the quick adjustment gear drives the quick adjustment rack to move, so that the sliding seat drives the positioning rod to 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 defects in the bent part.

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

[0049] 1. The distance between the positioning rod and the fixed rod is adjusted through the adjusting part, and the adjusting part can perform quick adjustment and slow adjustment on the positioning rod. In this way, when the distance to be adjusted by the positioning rod is large, the quick adjustment of the adjusting part can improve the efficiency of the position adjustment of the positioning rod. When the distance to be adjusted by the positioning rod is small, the slow adjustment of the adjusting part can improve the accuracy of the position adjustment of the positioning rod, thus ensuring the efficiency and accuracy of the distance adjustment between the positioning rod and the fixed rod, and enabling the steel bar bending test device to adapt to steel bars of different specifications.

[0050] 2. By designing the adjusting part as a combination of an adjusting 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 groups of driving sources, when the quick adjustment structure formed by the driving source, the quick adjustment gear, and the quick adjustment rack is started, the sliding seat can move quickly. When the slow adjustment structure formed by the driving 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 adjusting part are realized through two independent driving structures, making the structure of the adjusting part simpler and the failure rate lower.

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

[0052] 4. By setting the clutch component to control the quick adjustment structure and the slow adjustment structure to be connected to the sliding seat in an alternative manner, this can avoid serious consequences caused by the accidental start of another adjustment structure when one 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, only by driving the push block to move in the horizontal direction and with the elastic support of the first spring, the connection and disconnection between the adjustment structure and the sliding seat can be achieved. The structure is simple and convenient for maintenance.

[0054] 6. By setting the switching selector and designing the switching selector as a combination of a switching wheel, two connecting rods, and two groups of second springs, only by rotating the switching wheel, two groups of switching mechanisms can be driven simultaneously to realize the switching between the two adjustment structures. The structure is ingenious and the operation efficiency is high.

[0055] 7. The sliding seat, quick-adjustment gear, slow-adjustment gear, drive source, and clutch assembly are installed by setting up the mounting base, and the mounting base is detachably connected to the rotating disk. In this way, the structures of the adjusting part are all arranged on the mounting base. Just by removing the mounting base, the adjusting part can be overhauled, which is convenient for operation. Brief Description of the Drawings

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0057] Figure 1 Schematic three-dimensional structure diagram of the present invention.

[0058] Figure 2 Perspective view of the present invention in the front view direction.

[0059] Figure 3 Schematic top three-dimensional structure diagram of the rotating disk of the present invention after connecting the mounting base.

[0060] Figure 4 Schematic bottom three-dimensional structure diagram of the rotating disk of the present invention after connecting the mounting base.

[0061] Figure 5 Schematic diagram of the separated state of the mounting base and the rotating disk of the present invention.

[0062] Figure 6 Schematic bottom three-dimensional structure diagram of the rotating disk of the present invention.

[0063] Figure 7 Schematic structure diagram of the locking component of the present invention.

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

[0065] Figure 9 Schematic top three-dimensional structure diagram of the adjusting part of the present invention.

[0066] Figure 10 Schematic bottom three-dimensional structure diagram of the adjusting part of the present invention.

[0067] Figure 11 Schematic bottom three-dimensional structure diagram of the adjusting part of the present invention with the sliding seat hidden.

[0068] Figure 12 Schematic front view structure diagram of the adjusting part of the present invention with the sliding seat hidden.

[0069] Figure 13 Rear elevation structure schematic diagram of the adjustment part hidden sliding seat in the present invention.

[0070] Figure 14 Structure schematic diagram of the fixed shaft and the movable shaft in the present invention.

[0071] Figure 15 Structure schematic diagram of the switching wheel in the present invention.

[0072] The markings in the figure are indicated as:

[0073] 1. Device body; 2. Clamping part; 3. Rotating disc; 301. Adjusting groove; 302. Radial displacement groove; 4. Fixed rod; 5. Positioning rod; 6. Bending power source; 7. Adjusting part; 701. Sliding seat; 702. Quick adjustment rack; 703. Quick adjustment gear; 704. Slow adjustment rack; 705. Slow adjustment gear; 706. Driving source; 8. Locking component; 801. Locking rack; 802. Locking tooth group; 803. Screw hole; 804. Locking screw; 901. Transmission groove; 902. Frame; 903. Movable shaft; 9031. Transmission block; 904. Fixed shaft; 905. Ring body; 906. Pushing block; 9061. Avoidance groove; 907. First spring; 10. Switching wheel; 1001. Proximal center point; 1002. Distal center point; 1003. Transition section; 11. Connecting rod; 12. Second spring; 13. Installation base; X. Horizontal direction; Y. Vertical direction; 100. Steel bar. Detailed implementation manners

[0074] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0075] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0076] Embodiment 1

[0077] AsFigures 1 - 2 As shown in the figure, an embodiment of the present application provides a steel bar bending test device for engineering detection, including: a device body 1, a clamping part 2, a rotating disk 3, a positioning rod 5, a bending power source 6, and an adjusting part 7;

[0078] Please refer to Figure 1 , a clamping part 2 is provided on the device body 1. The clamping part 2 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 part 2 in this embodiment;

[0079] Please refer to Figure 1 , the rotating disk 3 is arranged on the device body 1. The rotating disk 3 is located on one side of the clamping part 2, and a fixed rod 4 is arranged in the middle of the rotating disk 3;

[0080] The positioning rod 5 is arranged on the rotating disk 3. The positioning rod 5 and the fixed rod 4 are distributed at intervals in the radial direction of the rotating disk 3, and the position of the positioning rod 5 on the rotating disk 3 can be adjusted;

[0081] Please refer to Figure 2 , the bending power source 6 is arranged on the device body 1. The bending power source 6 is connected to the rotating disk 3. The bending power source 6 can drive the rotating disk 3 to rotate. Generally, an electronically controlled driving device is selected for the bending power source 6, and it is required to be able to accurately control the rotation angle. Any structure that can accurately drive the rotating disk 3 to rotate a certain angle in the prior art can be used as the bending power source 6 in this embodiment, such as a servo motor, etc.;

[0082] The adjusting part 7 is arranged on the rotating disk 3. The adjusting part 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. Here, the quick adjustment and slow adjustment can be understood as that the quick adjustment adjusts the position of the positioning rod 5 faster than the slow adjustment;

[0083] Specifically, the single adjustment distance in the quick adjustment mode is greater than the single adjustment distance in the slow adjustment mode; taking the single adjustment distance in the quick adjustment as 2 cm and the single adjustment distance in the slow adjustment as 1 mm 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, then first adjust two adjustment distances through the adjusting part 7 in the quick adjustment mode. At this time, the distance between the positioning rod 5 and the steel bar 100 is 0.5 cm. The quick adjustment mode can no longer adjust a complete adjustment distance. At this time, adjust five adjustment distances through the adjusting part 7 in the slow adjustment mode, and the positioning rod 5 can be made to contact the steel bar 100;

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

[0085] Embodiment 2

[0086] On the basis of Embodiment 1, this embodiment also discloses a structure of the adjusting part 7;

[0087] As Figures 3 - 9 shown, the adjusting part 7 includes: an adjusting groove 301, a radial displacement groove 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 groups of driving sources 706;

[0088] Please refer to Figure 4 and Figure 6 , the adjusting groove 301 is arranged on the bottom surface of the rotating disc 3;

[0089] Please refer to Figure 5 and Figure 6 , the radial displacement groove 302 is arranged on the rotating disc 3, and the radial displacement groove 302 communicates with the adjusting groove 301;

[0090] Please refer to Figure 3 and Figure 5 , the sliding seat 701 is slidably arranged in the adjusting groove 301 along the radial direction of the rotating disc 3, and the lower end of the positioning rod 5 passes through the radial displacement groove 302 and is connected to the sliding seat 701;

[0091] Please refer to Figure 8 or Figure 9 , the quick adjustment rack 702 is arranged on the sliding seat 701; the quick adjustment gear 703 is rotatably arranged in the adjusting groove 301, and the quick adjustment gear 703 is meshed and connected with the quick adjustment rack 702;

[0092] Please refer to Figure 8 or Figure 9 , the slow adjustment rack 704 is arranged on the sliding seat 701; the slow adjustment gear 705 is rotatably arranged in the adjusting groove 301, and the slow adjustment gear 705 is meshed and connected with the slow adjustment rack 704, and the number of teeth of the slow adjustment gear 705 is less than that of the quick adjustment gear 703;

[0093] The two groups of driving sources 706 can respectively drive the quick adjustment gear 703 and the slow adjustment gear 705 to rotate. The two groups of driving sources 706 can select the same structure or different structures; the two groups of driving sources 706 can select a directly driven structure, such as an electric control driven motor, a manually driven handwheel, etc., or an indirectly driven structure, such as an indirect drive by a worm and worm gear mechanism, a reduction gear mechanism indirect drive, etc.;

[0094] In this embodiment, the driving source 706, the quick-adjustment gear 703, and the quick-adjustment rack 702 form a quick-adjustment structure, and the driving source 706, the slow-adjustment gear 705, and the slow-adjustment rack 704 form a slow-adjustment structure; the driving source 706 can be a structure with a locking function, that is, the output end is not locked when the driving source 706 drives, and the output end is locked when the driving source 706 stops driving. In this way, after the position of the sliding seat 701 is adjusted, the driving source 706 can lock the corresponding gear and rack, thereby locking the sliding seat 701. However, during the adjustment process of the sliding seat 701, the quick-adjustment structure and the slow-adjustment 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 does not lock the sliding seat 701.

[0095] Embodiment 3

[0096] Based on Embodiment 2, this embodiment further provides a locking component 8 in the adjusting portion 7;

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

[0098] Please refer to Figure 8 , the locking rack 801 is arranged on the sliding seat 701;

[0099] Please refer to Figure 6 and Figure 7 , the locking tooth group 802 is slidably arranged in the radial displacement groove 302 along the vertical direction Y, and the locking tooth group 802 can mesh with the locking rack 801;

[0100] Please refer to Figure 7 , the screw hole 803 is arranged on the rotating disk 3 along the vertical direction Y, and the screw hole 803 communicates 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 a structure without a locking function. When the position of the sliding seat 701 needs to be adjusted, the locking screw 804 is rotated to drive the locking tooth group 802 to separate from the locking rack 801 in the vertical direction Y, so as to unlock 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 locking screw 804 is rotated to drive the locking tooth group 802 to mesh with the locking rack 801 in the vertical direction Y, so as to lock the sliding seat 701. At this time, the sliding seat 701 is stable at the current position.

[0102] Embodiment 4

[0103] On the basis of Embodiment 2, the structure of the adjusting part 7 is further optimized in this embodiment;

[0104] Please refer to Figure 10 or Figure 11 , the adjusting part 7 further includes two sets of clutch components, and driving grooves 901 are arranged on both the quick-adjustment gear 703 and the slow-adjustment gear 705;

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

[0106] The frame 902 is arranged in the adjustment groove 301. The frame 902 in this embodiment can be understood as a structure relatively fixed to the adjustment groove 301, that is, the frame 902 does not refer to a bracket, but all structures relatively fixed to the adjustment groove 301. For example, the quick-adjustment gear 703 and the slow-adjustment gear 705 in Embodiment 2 can also be rotatably arranged on the frame 902;

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

[0108] Please refer to Figure 14 , the movable shaft 903 and the fixed shaft 904 are spaced apart along the vertical direction Y. The movable shaft 903 can move relative to the fixed shaft 904 in the vertical direction Y. When the fixed shaft 904 rotates, it can drive the movable shaft 903 to rotate. Specifically, an axial movement groove is arranged at the end of the movable shaft 903 close to the fixed shaft 904. One end of the fixed shaft 904 is slidably connected to the axial movement groove along the axial direction. A clamping groove is arranged on the side wall of the axial movement groove. A clamping block cooperating with the clamping groove is arranged on the outer wall of the fixed shaft 904 located in the axial movement groove. The clamping block can slide along the axial direction of the fixed shaft 904 in the clamping groove. Therefore, the movable shaft 903 can move axially relative to the fixed shaft 904 but cannot rotate circumferentially, so that when the fixed shaft 904 rotates, it can drive the movable shaft 903 to rotate;

[0109] Please refer to Figure 14 , a driving block 9031 adapted to the driving groove 901 is arranged at one end of the movable shaft 903; Please refer to Figure 11 , the driving block 9031 and the driving groove 901 are in relative positions. When the driving block 9031 enters the driving groove 901, the movable shaft 903 can drive the corresponding gear to rotate, such as Figure 11In the situation shown in the figure, at this time, the transmission block 9031 corresponding to the slow adjustment gear 705 enters the transmission slot 901. The drive source 706 can drive the slow adjustment gear 705 to rotate, while the transmission block 9031 corresponding to the fast adjustment gear 703 exits the transmission slot 901, and the drive source 706 cannot drive the fast adjustment gear 703 to rotate; the transmission block 9031 can be designed as a multi-prism, and the contour of the transmission slot 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 slot 901; in addition, chamfers can also be provided at the ends of the transmission block 9031 and at the openings of the transmission slot 901, so that the transmission block 9031 can enter the transmission slot 901 more easily;

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

[0111] In this embodiment, there can be one set of switching mechanisms, and the switching mechanisms can drive the two transmission blocks 9031 respectively; there can also be two sets of switching mechanisms, and the two sets of switching mechanisms drive the two transmission blocks 9031 separately.

[0112] Embodiment 5

[0113] On the basis of Embodiment 4, this embodiment also discloses a structure of the switching mechanism;

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

[0115] Please refer to 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. During the axial movement of the movable shaft 903 relative to the fixed shaft 904, the ring body 905 will move axially together 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] During the process of the push block 906 moving in the horizontal direction X, it can push the ring body 905 towards the direction close to the transmission slot 901 and cause the first spring 907 to deform;

[0119] Specifically, please refer to Figure 12, taking the orientation sequence in the figure and the current state as an example, the drive block 9031 on the left is separated from the drive slot 901, and the drive block 9031 on the right is located in the drive slot 901. During 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, causing the ring body 905 to drive the movable shaft 903 upward and push the drive block 9031 into the drive slot 901. In this process, the first spring 907 is compressed, and finally the first spring 907 presents the state shown on the right side in the figure; during 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, causing the ring body 905 to drive the movable shaft 903 downward and pull the drive block 9031 out of the drive slot 901.

[0120] Embodiment 6

[0121] On the basis of Embodiment 5, the structure of the switching mechanism is further optimized in this embodiment;

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

[0123] By setting the switching selection member, only by controlling the switching selection member, the two sets of switching mechanisms can be driven simultaneously, and the operation is 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] Please refer to Figure 11 Or Figure 12 , the switching wheel 10 is rotatably arranged on the frame 902, and the rotation between the switching wheel 10 and the frame 902 can have a certain resistance; Please refer to Figure 15 , two sets of switching slots are symmetrically arranged on the switching wheel 10 with the axis as the center. Each set of switching slots includes a near-center point 1001, a far-center point 1002 and a transition section 1003. The near-center point 1001 and the far-center point 1002 are respectively located at both ends of the transition section 1003;

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

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

[0128] During the process that the contact point between the connecting rod 11 and the switching groove moves from the proximal center point 1001 to the distal center point 1002, the switching wheel 10 pushes the connecting rod 11 to move towards the end close to the corresponding push block 906 and squeezes the second spring 12; during the process that the contact point between the connecting rod 11 and the switching groove moves from the distal center point 1002 to the proximal center point 1001, the elastic force of the second spring 12 pushes the connecting rod 11 to move towards the end away from the corresponding push block 906; when the contact point of one connecting rod 11 with the switching groove is located at the proximal center point 1001, the contact point of the other connecting rod 11 with the switching groove is located at the distal center point 1002. At this time, the acting forces of the two connecting rods 11 on the switching wheel 10 are towards the axis of the switching wheel 10;

[0129] Taking Figure 13 the azimuth sequence and the state at this time as an example, at this time, the end of the left connecting rod 11 is in contact with the proximal center point 1001 of the switching groove, the left second spring 12 is in a compressed state, and the left connecting rod 11 gives the switching wheel 10 a rightward thrust, and this thrust points to the axis of the switching wheel 10 and will not drive the switching wheel 10 to rotate; while the end of the right connecting rod 11 is in contact with the distal center point 1002 of the switching groove. At this time, the right second spring 12 is in a stretched state, and the right connecting rod 11 gives the switching wheel 10 a leftward thrust, and this thrust points to the axis of the switching wheel 10 and will not drive the switching wheel 10 to rotate. At this time, without an external force to drive the switching wheel 10, the switching wheel 10 will not rotate;

[0130] In Figure 13 the state shown, 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 will move towards the distal center point 1002, and the contact point between the end of the right connecting rod 11 and the switching wheel 10 will move towards the proximal center point 1001;

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

[0132] Embodiment 7

[0133] On the basis of Embodiment 4, this embodiment further optimizes the structure of the steel bar bending test device;

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

[0135] In this embodiment, the structures of the adjusting part 7 are all arranged on the mounting base 13. Just remove the mounting base 13, and the adjusting part 7 can be overhauled, which is convenient for operation.

[0136] Embodiment 8

[0137] This embodiment discloses a usage method suitable for the steel bar bending test device in the foregoing embodiment. The usage method includes the following steps:

[0138] Step 1: Clamp one end of the steel bar 100 through the clamping part 2, and make the other end of the steel bar 100 located between the fixed rod 4 and the positioning rod 5, and the steel bar 100 contacts the fixed rod 4;

[0139] Step 2: Rotate the locking screw 804 to make the locking screw 804 drive the locking tooth group 802 to separate from the locking rack 801 along 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, drive the quick adjustment gear 703 to rotate through the drive source 706. The quick adjustment gear 703 drives the quick adjustment rack 702 to move, so that the sliding seat 701 drives the positioning rod 5 to 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, drive the slow adjustment gear 705 to rotate through the drive source 706. The slow adjustment gear 705 drives the slow adjustment rack 704 to move, so that the sliding seat 701 drives the positioning rod 5 to slowly approach the steel bar 100 and make the positioning rod 5 contact the steel bar 100; at this time, rotate the locking screw 804 to make the locking screw 804 drive the locking tooth group 802 to engage with the locking rack 801 along 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 to make the locking screw 804 drive the locking tooth group 802 to separate from the locking rack 801 along the vertical direction Y. Drive the quick adjustment gear 703 to rotate through the drive source 706. The quick adjustment gear 703 drives the quick adjustment rack 702 to move, so that the sliding seat 701 drives the positioning rod 5 to quickly move away from the steel bar 100. Then control the clamping part 2 to release the steel bar 100, take down the steel bar 100 and 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 fixed rod 4 and the positioning rod 5 can be adjusted within a large range, and there are a fast adjustment process and a slow adjustment process, with high adjustment efficiency and high adjustment accuracy, capable of adapting to the bending of steel bars 100 of different specifications, and having a wide application range.

[0143] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A steel bar bending test device for engineering inspection, characterized in that: include: A device body (1), wherein the device body (1) is provided with a clamping portion (2), and the clamping portion (2) can clamp one end of a steel bar (100); A rotating disk (3), the rotating disk (3) being arranged on the device body (1), the rotating disk (3) being located on one side of the clamping portion (2), and a fixing rod (4) being arranged in the middle of the rotating disk (3); A positioning rod (5), wherein the positioning rod (5) is arranged on the rotating disk (3), and the positioning rod (5) and the fixing rod (4) are spaced apart in the radial direction of the rotating disk (3); a bending power source (6), wherein the bending power source (6) can drive the rotating disk (3) to rotate; An adjusting portion (7), wherein the adjusting portion (7) can quickly adjust the position of the positioning rod (5) along the radial direction of the rotating disk (3), and can slowly adjust the position of the positioning rod (5) along the radial direction of the rotating disk (3).

2. A steel bar bending test device for engineering inspection according to claim 1, characterized in that: The adjusting unit (7) comprises: An adjustment groove (301), wherein the adjustment groove (301) is arranged on the bottom surface of the rotating disk (3); A radial displacement groove (302), wherein the radial displacement groove (302) is arranged on the rotating disk (3), and the radial displacement groove (302) is connected to the adjustment groove (301); A sliding seat (701), the sliding seat (701) is arranged in the adjustment groove (301) to slide along the radial direction of the rotating disk (3), and the lower end of the positioning rod (5) passes through the radial displacement groove (302) and is connected to the sliding seat (701); A quick-adjusting rack (702), wherein the quick-adjusting rack (702) is arranged on the sliding seat (701); A quick-adjusting gear (703), wherein the quick-adjusting gear (703) is disposed in the adjusting slot (301), and the quick-adjusting gear (703) is meshingly connected with the quick-adjusting rack (702); A slow-adjusting rack (704), wherein the slow-adjusting rack (704) is arranged on the sliding seat (701); A slow-adjusting gear (705), the slow-adjusting gear (705) being arranged in the adjusting slot (301), the slow-adjusting gear (705) being meshedly connected with the slow-adjusting rack (704), the number of teeth of the slow-adjusting gear (705) being less than the number of teeth of the fast-adjusting gear (703); Two sets of driving sources (706), the two sets of driving sources (706) can respectively drive the fast-adjusting gear (703) and the slow-adjusting gear (705) to rotate.

3. A steel bar bending test device for engineering inspection according to claim 2, characterized in that: The adjusting portion (7) further comprises a locking assembly (8), wherein the locking assembly (8) comprises: A locking rack (801), wherein the locking rack (801) is arranged on the sliding seat (701); A locking tooth set (802), wherein the locking tooth set (802) is slidably disposed in the radial displacement groove (302) along a vertical direction (Y), and the locking tooth set (802) can mesh with the locking rack (801); a screw hole (803), the screw hole (803) being arranged on the rotating disk (3) along the vertical direction (Y), the screw hole (803) being in communication with the radial displacement groove (302); A locking screw (804), wherein 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 set (802).

4. The steel bar bending test device for engineering inspection according to claim 2, characterized in that: The adjustment part (7) further comprises two sets of clutch components, the fast adjustment gear (703) and the slow adjustment gear (705) are both provided with a transmission groove (901), and each set of the clutch components comprises: A frame (902), wherein the frame (902) is arranged in the adjustment slot (301); A fixed shaft (904), the fixed shaft (904) being rotatably disposed on the frame (902), and the fixed shaft (904) being connected to the driving source (706); A movable shaft (903), wherein the movable shaft (903) and the fixed shaft (904) are spaced apart along the vertical direction (Y), 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 rotating; a transmission block (9031) adapted to the transmission groove (901) is provided at one end of the movable shaft (903), the transmission block (9031) is opposite to the transmission groove (901), and when the transmission block (9031) enters the transmission groove (901), the movable shaft (903) can drive the corresponding gear to rotate; A switching mechanism, wherein the switching mechanism can drive the movable shaft (903) to reciprocate along the vertical direction (Y) to enable the transmission block (9031) to enter and exit the transmission slot (901).

5. A steel bar bending test device for engineering inspection according to claim 4, characterized in that: The switching mechanism comprises: A ring body (905), wherein the ring body (905) is arranged on the movable shaft (903), and the ring body (905) can only rotate relative to the movable shaft (903); A push block (906), the push block (906) being arranged on a side of the ring body (905) away from the transmission block (9031), the surface of the push block (906) on a side close to the ring body (905) being an inclined surface, and the push block (906) being in contact with the ring body (905); A first spring (907), 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); 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.

6. A steel bar bending test device for engineering inspection according to claim 5, characterized in that: The two groups of switching mechanisms are symmetrically distributed in the horizontal direction (X), and a switching selection member is arranged between the two groups 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 groove (901), the other transmission block (9031) exits the corresponding transmission groove (901).

7. A steel bar bending test device for engineering inspection according to claim 6, characterized in that: The switching selection element comprises: A switching wheel (10), the switching wheel (10) being rotatably arranged on the frame (902), the switching wheel (10) being symmetrically arranged with the axis as the center with two groups of switching slots, each group of the switching slots comprising a proximal point (1001), a distal point (1002) and a transition section (1003), the proximal point (1001) and the distal point (1002) being respectively located at two ends of the transition section (1003); Two connecting rods (11), the two connecting rods (11) are respectively connected to the two pushing blocks (906), 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 pushing blocks (906) are respectively in contact with the two groups of switching grooves; Two groups of second springs (12), the two groups of second springs (12) are respectively sleeved outside the two connecting rods (11), one end of the two groups of second springs (12) are respectively connected to the two push blocks (906), and the other ends of the two groups of second springs (12) are both connected to the frame (902); 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 between one connecting rod (11) and the switching slot is located at the proximal point (1001), the contact point between the other connecting rod (11) and the switching slot is located at the distal point (1002), at this time, the force exerted by the two connecting rods (11) on the switching wheel (10) is toward the axis of the switching wheel (10).

8. A steel bar bending test device for engineering inspection according to any one of claims 4 to 7, characterized in that: The steel bar bending test device further comprises a mounting base (13), wherein the mounting base (13) is detachably connected to the rotating disk (3), and the sliding seat (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).

9. A method for using a steel bar bending test device, applicable to the steel bar bending test device for engineering inspection according to claim 3, characterized in that: The following steps are involved: Step 1: clamp one end of the steel bar (100) by 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); Step 2: Rotate the locking screw (804) so ​​that the locking screw (804) and the locking gear set (802) are separated from the locking rack (801) along 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 positioning rod (5) and the steel bar (100) are When the spacing between the steel bars (100) is smaller 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) brings the positioning rod (5) slowly close to the steel bars (100), and the positioning rod (5) contacts the steel bars (100); at this time, the locking screw (804) is rotated so that the locking screw (804) brings the locking tooth group (802) to mesh with the locking rack (801) along the vertical direction (Y); Step 3: Start the bending power source (6) to drive the rotating disk (3) to rotate at a preset angle, so that the steel bar (100) is bent to a preset angle; Step 4: Rotate the locking screw (804) so ​​that the locking screw (804) and the locking tooth set (802) are separated from the locking rack (801) along the vertical direction (Y), and drive the quick-adjusting gear (703) to rotate through the driving source (706). The quick-adjusting gear (703) drives the quick-adjusting 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.

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