Reinforcing steel bar raw material tensile strength detection equipment

Abstract

The invention relates to the technical field of tensile detection, in particular to reinforcing steel bar raw material tensile strength detection equipment which comprises a tensile testing machine, a clamping mechanism used for automatically clamping a reinforcing steel bar, a clamping mechanism used for clamping the reinforcing steel bar, a clamping mechanism used for clamping the reinforcing steel bar, a clamping mechanism used for clamping the reinforcing steel bar, and a detection mechanism used for detecting the tensile strength of the reinforcing steel bar, and the clamping mechanism is further tightened along with the stretching process and is arranged on the tensile testing machine. According to the device, through the arranged clamping mechanism, a reinforcing bar drives a bearing frame and a first screw rod to synchronously move downwards through the gravity of the reinforcing bar to compress a first spring, the bearing frame drives clamping blocks to move downwards along an inclined groove, the two clamping blocks are made to get close to each other, and therefore the clamping blocks can clamp and fix the reinforcing bar; and the effect that the clamping blocks are driven to conduct automatic clamping through the self gravity of the reinforcing bars is achieved, the working efficiency is greatly improved, the device can adapt to the reinforcing bars with different diameters, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tensile testing, and in particular relates to a tensile strength testing device for steel bar raw materials. Background Art

[0002] Rebar refers to the steel used in reinforced concrete and prestressed concrete. It's a crucial component of building structures, and its performance directly impacts the structure's suitability and safety. Therefore, rebar must undergo necessary performance testing before use in construction projects. A key indicator of rebar's mechanical properties is its tensile strength, calculated by dividing the maximum tensile force a rebar can withstand before breaking by its cross-sectional area.

[0003] However, the existing tensile testing equipment has a cumbersome clamping process and low work efficiency, and its clamp cannot be further tightened as the stretching process progresses. When the steel bar is stretched, the cross-section of the steel bar will shrink, resulting in the initial clamping spacing of the clamp being unable to adapt, and it is easy to loosen. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a tensile strength testing device for steel bar raw materials.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tensile strength testing device for steel bar raw materials includes a tensile testing machine, a slide is fixed to the output end of the tensile testing machine, a bracket is welded to the outer wall of the tensile testing machine, and further includes:

[0007] The clamping mechanism is used to automatically clamp the steel bar and further tighten it as the stretching process progresses. The clamping mechanism is arranged on the tensile testing machine. The clamping mechanism includes a receiving frame. The receiving frame is slidably plugged into the outer wall of the support and the slide. The outer wall of the slide is provided with a avoidance groove that matches the steel bar. Each of the receiving frames is slidably plugged into the outer wall on both sides of the avoidance groove. A pair of symmetrically distributed clamping blocks are slidably plugged into the outer wall of each clamping block. A sliding column is welded on the outer wall of the clamping block. The outer walls of the support and the slide are provided with A pair of inclined grooves, the bottom ends of each pair of inclined grooves are gradually approaching, the sliding column is slidably inserted in the inclined groove, a threaded sleeve is welded on the bottom outer wall of each receiving frame, a screw rod 1 is movably inserted on the inner wall of each threaded sleeve through threaded cooperation, a gear rod 1 is welded on the bottom outer wall of each screw rod 1, a rack rod 1 is welded on the outer wall of the sliding seat, a rack rod 2 is welded on the outer wall of the bracket, the rack rod 1 and the rack rod 2 avoid each other, the rack rod 1 and the gear rod 1 on the bracket are meshed with each other, and the rack rod 2 and the gear rod 1 on the sliding seat are meshed with each other;

[0008] and a feeding mechanism for automatically feeding materials, wherein the feeding mechanism is arranged on the tensile testing machine.

[0009] In the above-mentioned steel bar raw material tensile strength testing equipment, installation grooves are provided on the bottom outer walls of the bracket and the slide, a limiting rod is welded on the inner wall of each installation groove, the screw rod is movably mounted on the outer wall of the limiting rod, and a spring is welded between the outer wall of each gear and the inner wall of the installation groove.

[0010] In the above-mentioned steel bar raw material tensile strength testing device, a rubber block is rotatably inserted into the outer wall of the top end of each of the screw rods.

[0011] In the above-mentioned steel bar raw material tensile strength testing equipment, the feeding mechanism includes screw 2, screw 2 is rotatably inserted into the outer wall of the bracket, gear 2 is welded on the bottom outer wall of screw 2, a ratchet bar is slidably inserted into the bottom outer wall of the slide, the ratchet bar is unidirectionally meshed with gear 2, and a material storage trough is provided on the outer wall of the bracket.

[0012] In the above-mentioned steel bar raw material tensile strength testing equipment, a lifting frame is slidably inserted in the material storage trough, and the lifting frame is mounted on the outer wall of the screw rod 2 through threaded fitting. A spring 2 is welded between the outer wall of the ratchet bar and the outer wall of the sliding seat, and an extension column extending outside the material storage trough is welded on the outer wall of the lifting frame.

[0013] In the above-mentioned steel bar raw material tensile strength testing equipment, a material guide inclined plate is welded on the top outer wall of the material storage trough, and a transfer chamber is welded on the end of the material guide inclined plate tilted downward.

[0014] In the above-mentioned steel bar raw material tensile strength testing equipment, a feeding port is provided at the bottom of the transfer chamber, a rotating drum is plugged into the transfer chamber through shaft rotation, and a plurality of equally spaced circumferentially distributed slots that are adapted to the steel bars are provided on the outer wall of the rotating drum.

[0015] In the above-mentioned steel bar raw material tensile strength testing equipment, the rotating shaft of the rotating drum passes through the outer wall of one end of the bracket and a winch is welded on it, a coil spring is welded between the outer wall of the rotating shaft of the rotating drum and the outer wall of the bracket, a rope is wrapped around the outer wall of the winch, and a wire wheel is rotatably plugged into the outer wall of the bracket, and the free end of the rope passes over the wire wheel and is fixed on the extension column.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the provided clamping mechanism, the steel bar drives the receiving frame and the screw rod to move downward synchronously to compress the spring by its own gravity. The receiving frame drives the clamping block to move downward along the inclined slot, so that the two clamping blocks are close to each other, so that the clamping block can clamp and fix the steel bar. The clamping block is automatically clamped by the self-gravity of the steel bar, which greatly improves the work efficiency and can adapt to steel bars of different diameters, greatly improving the practicality of the device.

[0018] 2. Through the setting of the loading mechanism, every time the inspection is completed, the lifting frame will move up and release the rope, so that the coil spring drives the rotating drum to rotate. When the steel bar enters the slot, it can turn to the discharge port along with the slot, thereby realizing the effect of automatic loading. The steel bar falls from the discharge port into the avoidance groove, and is then intercepted by the receiving frame between the two clamping blocks, realizing the effect of automatic loading and greatly improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional schematic diagram of the overall structure of the present invention Figure 1 .

[0020] Figure 2 A three-dimensional schematic diagram of the overall structure of the present invention Figure 2 .

[0021] Figure 3 It is a schematic three-dimensional cross-sectional view of the bracket of the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of the clamping mechanism of the present invention.

[0023] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the receiving frame of the present invention.

[0024] Figure 6 It is a three-dimensional schematic diagram of the rotating drum of the present invention.

[0025] Figure 7 It is a three-dimensional schematic diagram of the clamping block of the present invention.

[0026] Figure 8 It is a plan view of the clamping mechanism of the present invention in working state.

[0027] In the figure: 1. Tensile testing machine; 11. Bracket; 111. Storage trough; 112. Guide ramp; 113. Transfer chamber; 114. Feeding port; 12. Rack 2; 13. Wire pulley; 2. Slide; 21. Avoidance groove; 22. Inclined groove; 23. Limit rod; 24. Rack 1; 25. Mounting groove; 3. Support frame; 31. Clamping block; 32. Sliding column; 33. Threaded sleeve; 4. Screw 1; 41. Gear 1; 42. Spring 1; 43. Rubber block; 5. Rotating drum; 51. Slot; 52. Coil spring; 53. Winch; 54. Rope; 6. Screw 2; 61. Gear 2; 62. Lifting frame; 621. Extension column; 7. Ratchet bar; 71. Spring 2; 9. Steel bar. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] See also Figures 1-8 The present invention provides a technical solution: a tensile strength testing device for steel bar raw materials, comprising a tensile testing machine 1, a slide 2 being fixed to the output end of the tensile testing machine 1, a bracket 11 being welded to the outer wall of the tensile testing machine 1, and further comprising:

[0031] The clamping mechanism is used to automatically clamp the steel bar 9 and further tighten it as the stretching process progresses. The clamping mechanism is arranged on the tensile testing machine 1. The clamping mechanism includes a receiving frame 3. The receiving frame 3 is slidably inserted on the outer wall of the bracket 11 and the slide 2. The outer wall of the slide 2 is provided with a avoidance groove 21 adapted to the steel bar 9. Each receiving frame 3 is slidably inserted with a pair of symmetrically distributed clamping blocks 31 on the outer wall on both sides of the avoidance groove 21. A sliding column 32 is welded on the outer wall of each clamping block 31. A pair of inclined grooves 22 are opened on the outer wall of the bracket 11 and the slide 2 on both sides of the avoidance groove 21. The bottom ends of each pair of inclined grooves 22 are gradually approached, and the sliding column 32 is slidably inserted in the inclined groove 22. A threaded sleeve 33 is welded on the outer wall of the bottom of each receiving frame 3. Each threaded sleeve A screw rod 4 is movably connected to the inner wall of each screw rod 4 through threaded cooperation, a gear rod 41 is welded to the outer wall of the bottom of each screw rod 4, a rack rod 24 is welded to the outer wall of the slide 2, and a rack rod 2 12 is welded to the outer wall of the bracket 11. The rack rod 24 and the rack rod 2 12 avoid each other, the rack rod 24 and the gear rod 41 on the bracket 11 are meshed with each other, and the rack rod 212 and the gear rod 41 on the slide 2 are meshed with each other. A mounting groove 25 is provided on the bottom outer wall of the bracket 11 and the slide 2, and a limit rod 23 is welded on the inner wall of each mounting groove 25. The screw rod 4 is movably sleeved on the outer wall of the limit rod 23, and a spring 42 is welded between the outer wall of each gear rod 41 and the inner wall of the mounting groove 25. A rubber block 43 is rotatably inserted on the outer wall of the top end of each screw rod 4.

[0032] And a feeding mechanism, which is used for automatic feeding, is provided on the tensile testing machine 1 .

[0033] The above content is further elaborated: during operation, the output end of the tensile testing machine 1 is controlled to drive the slide 2 to approach the bracket 11, and the slide 2 drives the ratchet bar 7 to approach the gear 2 61, thereby starting the loading mechanism to load the material, and the steel bar 9 falls into the avoidance groove 21 from the discharge port 114, and is then intercepted by the receiving frame 3 between the two clamping blocks 31. Under the action of its own gravity, the receiving frame 3 and the screw 14 move down synchronously with the compression spring 142, and the receiving frame 3 drives the clamping block 31 to move down along the inclined groove 22, so that the two clamping blocks 31 are close to each other, so that the clamping block 31 can clamp and fix the steel bar 9, realizing the effect of automatically clamping the clamping block 31 by the self-gravity of the steel bar 9, greatly improving the working efficiency, and being able to adapt to steel bars 9 of different diameters, greatly improving the practicality of the device, after the initial clamping is completed, the output end of the tensile testing machine 1 is controlled to drive the slide When the cam 11 is in the state of being moved away from the support 11, the gear 11 is rotated by the gear 12 and the gear 13 is rotated by the gear 14. When the cam 11 is in the state of being moved away from the support 11, the gear 11 is rotated by the gear 12 and the gear 13 is rotated by the gear 14. When the cam 11 is in the state of being moved away from the support 11, the gear 11 is rotated by the gear 14. When the cam 11 is in the state of being moved away from the support 11, the gear 11 is rotated by the gear 14.

[0034] Specifically, the feeding mechanism includes a screw rod 2 6, a screw rod 2 6 is rotatably plugged into the outer wall of the bracket 11, a gear 2 61 is welded to the bottom outer wall of the screw rod 2, a ratchet bar 7 is slidably plugged into the bottom outer wall of the slide 2, the ratchet bar 7 is unidirectionally meshed with the gear 2 61, a material storage groove 111 is provided on the outer wall of the bracket 11, a lifting frame 62 is slidably plugged into the material storage groove 111, and the lifting frame 62 is fitted on the outer wall of the screw rod 2 6 through a threaded fit, a spring 2 71 is welded between the outer wall of the ratchet bar 7 and the outer wall of the slide 2, an extension column 621 extending to the outside of the material storage groove 111 is welded on the outer wall of the lifting frame 62, and a material guide is welded on the top outer wall of the material storage groove 111. Inclined plate 112, the end of the guide inclined plate 112 is welded with a transfer chamber 113 at an angle downward, and a discharge port 114 is provided at the bottom of the transfer chamber 113. A rotating drum 5 is inserted into the transfer chamber 113 through an axis rotation, and a plurality of equidistant circumferentially distributed card grooves 51 that are compatible with the steel bars 9 are provided on the outer wall of the rotating drum 5. The rotating shaft of the rotating drum 5 passes through the outer wall of one end of the bracket 11, and a winch 53 is welded on the outer wall. A coil spring 52 is welded between the outer wall of the rotating shaft of the rotating drum 5 and the outer wall of the bracket 11, and a rope 54 is wound on the outer wall of the winch 53. A wire wheel 13 is rotatably inserted on the outer wall of the bracket 11, and the free end of the rope 54 is fixed on the extension column 621 after passing over the wire wheel 13.

[0035] Before testing, the steel bars 9 to be tested are stacked on the lifting rack 62 in the storage trough 111 .

[0036] In the initial state, the lifting frame 62 is located at the bottom of the material storage trough 111 , and the lifting frame 62 pulls the rotating drum 5 through the rope 54 to rotate the compression coil spring 52 .

[0037] The above content is further elaborated: when the tensile test is completed, the output end of the tensile testing machine 1 is controlled again to drive the slide 2 to approach the bracket 11, and the rack 1 24 and the rack 2 12 respectively drive the corresponding gear 1 41 to rotate in the opposite direction, so that the screw 1 4 is reset. At this time, since the steel bar 9 is broken, its own weight cannot overcome the elastic force of the spring 1 42, so that the receiving frame 3 moves up, and then the two clamping blocks 31 move away from each other along the inclined groove 22, so that the broken steel bar 9 falls off, realizing the effect of automatic unloading. At the same time, in the above process, the slide 2 drives the ratchet bar 7 to engage with the gear 2 61 in one direction, so that the gear The second 61 drives the screw 2 6 to rotate, and under the action of the threaded combination, the lifting frame 62 drives the steel bars 9 in the storage trough 111 to move upward, so that the uppermost steel bars 9 can slide to the transfer chamber 113 through the guide inclined plate 112. When the lifting frame 62 moves upward, the rope 54 is released, so that the coil spring 52 drives the rotating drum 5 to rotate. When the steel bar 9 enters the slot 51, it can turn to the discharge port 114 along with the slot 51, thereby achieving the effect of automatic feeding. In addition, when the new steel bar 9 falls from the discharge port 114, the tensile testing machine 1 is stopped, and after the clamping mechanism completes the initial clamping, the tensile testing machine 1 is started again for testing.

[0038] The working principle and use process of the present invention are as follows: before testing, the steel bars 9 to be tested are stacked on the lifting frame 62 in the storage trough 111. During operation, the output end of the tensile testing machine 1 is controlled to drive the slide 2 to approach the bracket 11, and the slide 2 drives the ratchet bar 7 to approach the gear 2 61. Under the action of the feeding mechanism, the rope 54 is released when the lifting frame 62 moves up, so that the coil spring 52 drives the rotating drum 5 to rotate. When the steel bar 9 enters the card slot 51, it can turn to the discharge port 114 along with the card slot 51, thereby realizing the effect of automatic feeding. The steel bar 9 falls into the avoidance groove 21 from the discharge port 114, and is then intercepted by the receiving frame 3 between the two clamping blocks 3 1, under the action of the clamping mechanism, the steel bar 9 drives the receiving frame 3 and the screw rod 4 to move downward synchronously to compress the spring 42 by its own gravity, and the receiving frame 3 drives the clamping block 31 to move downward along the inclined slot 22, so that the two clamping blocks 31 are close to each other, so that the clamping block 31 can clamp and fix the steel bar 9, realizing the effect of automatically clamping the clamping block 31 driven by the self-gravity of the steel bar 9, greatly improving the work efficiency, and being able to adapt to steel bars 9 of different diameters, greatly improving the practicality of the device, after the initial clamping is completed, the output end of the control tensile testing machine 1 drives the slide 2 to gradually move away from the bracket 11, and the tensile test is carried out. The tensile test is performed until the steel bar 9 breaks. In the process of the slide 2 and the bracket 11 moving away from each other, under the action of the clamping mechanism, the screw 4 is gradually screwed into the threaded sleeve 33, and the rubber block 43 with the top of the screw 4 abuts against the steel bar 9, increasing the friction force on the steel bar 9 and further improving the clamping effect. At the same time, when the gear 41 rises with the screw 4 to abut against the top inner wall of the installation groove 25, the screw 4 cannot move further upward, so that the screw 4 continues to rotate, which will drive the threaded sleeve 33 to pull the receiving frame 3 to move further downward, so that the receiving frame 3 drives the clamping block 31 to move closer, so as to further improve the tensile process. The effect of high clamping force prevents the steel bar 9 from being stretched and deformed and causing it to fall off. When the test is completed, the output end of the tensile testing machine 1 is controlled again to drive the slide 2 to approach the bracket 11, and the rack 1 24 and the rack 2 12 respectively drive the corresponding gear 1 41 to rotate in the opposite direction, so that the screw 1 4 is reset. At this time, since the steel bar 9 is broken, its own weight cannot overcome the elastic force of the spring 1 42, so that the receiving frame 3 moves up, and then the two clamping blocks 31 move away from each other along the inclined groove 22, so that the broken steel bar 9 falls off, achieving the effect of automatic unloading. By repeating the above process, the steel bars 9 in the storage trough 111 can be batch tested.

[0039] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A steel bar raw material tensile strength testing device, comprising a tensile testing machine (1), a slide seat (2) is fixed to the output end of the tensile testing machine (1), a bracket (11) is welded on the outer wall of the tensile testing machine (1), and the characteristics are as follows: Also includes: A clamping mechanism is used for automatically clamping a steel bar (9) and further tightening it as the stretching process progresses. The clamping mechanism is arranged on a tensile testing machine (1). The clamping mechanism comprises a receiving frame (3). The receiving frame (3) is slidably inserted on the outer walls of the support (11) and the slide seat (2). The outer wall of the slide seat (2) is provided with a avoidance groove (21) adapted to the steel bar (9). A pair of symmetrically distributed clamping blocks (31) are slidably inserted on the outer walls of each receiving frame (3) located on both sides of the avoidance groove (21). A sliding column (32) is welded on the outer wall of each clamping block (31). A pair of inclined grooves (22) are provided on the outer walls of the support (11) and the slide seat (2) located on both sides of the avoidance groove (21). Each pair of The bottom ends of the inclined grooves (22) are gradually approached, the sliding column (32) is slidably inserted in the inclined grooves (22), a threaded sleeve (33) is welded on the bottom outer wall of each receiving frame (3), a screw rod (4) is movably inserted on the inner wall of each threaded sleeve (33) through threaded cooperation, a gear rod (41) is welded on the bottom outer wall of each screw rod (4), a rack rod (24) is welded on the outer wall of the slide seat (2), a rack rod (12) is welded on the outer wall of the bracket (11), the rack rod (24) and the rack rod (12) are mutually avoided, the rack rod (24) and the gear rod (41) on the bracket (11) are mutually meshed, and the rack rod (12) and the gear rod (41) on the slide seat (2) are mutually meshed; And a feeding mechanism, used for automatic feeding, wherein the feeding mechanism is arranged on the tensile testing machine (1).

2. The steel bar raw material tensile strength testing device according to claim 1, characterized in that: The bottom outer walls of the bracket (11) and the slide seat (2) are both provided with mounting grooves (25), the inner wall of each mounting groove (25) is welded with a limiting rod (23), the screw rod (4) is movably mounted on the outer wall of the limiting rod (23), and a spring (42) is welded between the outer wall of each gear (41) and the inner wall of the mounting groove (25).

3. The steel bar raw material tensile strength testing device according to claim 1, characterized in that: A rubber block (43) is rotatably inserted on the outer wall of the top end of each screw rod (4).

4. The steel bar raw material tensile strength testing device according to claim 1, characterized in that: The feeding mechanism comprises a second screw rod (6), the second screw rod (6) is rotatably plugged into the outer wall of the bracket (11), a second gear wheel (61) is welded to the bottom outer wall of the second screw rod (6), a ratchet bar (7) is slidably plugged into the bottom outer wall of the slide seat (2), the ratchet bar (7) is unidirectionally meshed with the second gear wheel (61), and a material storage groove (111) is provided on the outer wall of the bracket (11).

5. The steel bar raw material tensile strength testing device according to claim 4, characterized in that: A lifting frame (62) is slidably inserted in the material storage trough (111), and the lifting frame (62) is sleeved on the outer wall of the second screw rod (6) through threaded fitting. A second spring (71) is welded between the outer wall of the ratchet bar (7) and the outer wall of the slide seat (2), and an extension column (621) extending to the outside of the material storage trough (111) is welded on the outer wall of the lifting frame (62).

6. A steel bar raw material tensile strength testing device according to claim 5, characterized in that: A material guide inclined plate (112) is welded on the top outer wall of the material storage trough (111), and a transfer chamber (113) is welded at the end of the material guide inclined plate (112) in an inclined manner downward.

7. A steel bar raw material tensile strength testing device according to claim 6, characterized in that: The bottom of the transfer chamber (113) is provided with a material discharge port (114), a rotating drum (5) is inserted into the transfer chamber (113) through shaft rotation, and the outer wall of the rotating drum (5) is provided with a plurality of equally spaced circumferentially distributed slots (51) adapted to the steel bars (9).

8. The steel bar raw material tensile strength testing device according to claim 7, characterized in that: A capstan (53) is welded on the outer wall of one end of the rotating shaft of the rotating drum (5) passing through the bracket (11), a coil spring (52) is welded between the outer wall of the rotating shaft of the rotating drum (5) and the outer wall of the bracket (11), a rope (54) is wound on the outer wall of the capstan (53), a wire wheel (13) is rotatably plugged on the outer wall of the bracket (11), and the free end of the rope (54) passes above the wire wheel (13) and is fixed on the extension column (621).

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