Reinforcing steel bar tensile testing machine

Abstract

The utility model relates to the technical field of steel bar detection, in particular to a steel bar tensile testing machine which comprises a workbench, a fixing frame, a protective cover, a mounting seat and a mounting plate, the fixing frame is connected with the workbench, one end of the protective cover is rotatably connected with the fixing frame, the two mounting seats are slidably connected with the workbench, and the fixing frame is provided with a driving mechanism for driving the two mounting seats to move; the number of the mounting plates is two, the two mounting plates are connected with the two mounting bases in a sliding mode respectively, the two mounting plates are each provided with a clamping assembly, the two mounting bases are each provided with a dynamometer, and the dynamometers are connected with the corresponding mounting plates. The two ends of the reinforcing steel bar are connected to the clamping assemblies on the two mounting seats respectively, and the two mounting seats are synchronously far away from the tensile reinforcing steel bar, so that the internal stress of the whole reinforcing steel bar is more uniform, and the detection result is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to reinforcing steel bar detection technical field, concretely is a reinforcing steel bar tensile testing machine. BACKGROUND

[0002] Reinforcing steel bar and concrete are main materials of building structure, and the two have good adhesive force, the temperature linear expansion coefficient of reinforcing steel bar and concrete is similar, and more importantly, reinforcing steel bar is wrapped in concrete to avoid corrosion of external environment, and concrete can protect reinforcing steel bar well, in building structure materials, reinforcing steel bar is an important component, and the performance of reinforcing steel bar directly influences the application and safety of structure, so the quality requirement of reinforcing steel bar is very high, and the tensile strength of reinforcing steel bar is mainly tested by reinforcing steel bar tensile testing machine.

[0003] The Chinese patent with the authorization announcement number CN221465074U discloses a reinforcing steel bar tensile testing machine, and relates to the technical field of reinforcing steel bar, which comprises a support assembly, the support assembly comprises a support seat, the top of the support seat is provided with a sliding seat, the top of the sliding seat is provided with a clamp and an adjusting assembly.The utility model discloses through setting up adjusting assembly, when the reinforcing steel bar tensile testing machine is carried out, the extensometer can be quickly installed and disassembled, the cooperation of the limiting groove and the limiting block makes the extensometer fixedly installed on the top of the sliding seat, and the extensometer is not prone to falling off, when the extensometer is needed, the extensometer is slid to the other end of the sliding groove, the force arm of the extensometer can be fixed with the reinforcing steel bar, the deformation degree and the deformation amount of the reinforcing steel bar are measured, and when the rotating rod is fixed with the reinforcing steel bar by using the external rubber ring, the horizontal limiting of the rubber ring is lost by rotating the rotating rod, the rubber ring can be quickly taken down, safety hazards are avoided, and working efficiency is improved.

[0004] However, the above technical solution has the following defects: in the reinforcing steel bar tensile testing machine, the two ends of the reinforcing steel bar are respectively installed in the clamps on the fixed seat and the sliding seat, so that the stress on the two ends of the reinforcing steel bar is not uniform, the detection result is affected, the two clamping blocks in the clamp are clamped on the surface of the reinforcing steel bar, the stress on the clamping position is large, the internal stress is uneven, and the reinforcing steel bar is prone to breakage, which affects the detection result. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art, and provides a reinforcing steel bar tensile testing machine.

[0006] The technical scheme of the utility model is as follows: a reinforcing steel bar tensile testing machine, comprising a workbench, a fixing frame, a protective cover, a mounting seat and a mounting plate.

[0007] The fixing frame is connected with the workbench, one end of the protective cover is rotationally connected with the fixing frame, the mounting seat is provided with two and is slidingly connected with the workbench, and the fixing frame is provided with a driving mechanism for driving the two mounting seats to move.

[0008] Two mounting plates are provided, the two mounting plates are slidably connected with the two mounting seats respectively, clamping assemblies are arranged on the two mounting plates, force gauges are arranged on the two mounting seats, and the force gauges are connected with the corresponding mounting plates.

[0009] Preferably, the clamping assembly comprises a clamping plate and a clamping block.

[0010] Two clamping plates are provided, and the two clamping plates are slidably connected with the surface of the mounting plate.

[0011] A plurality of clamping blocks are provided, and the plurality of clamping blocks are connected with the surfaces of the two clamping plates respectively.

[0012] The clamping blocks on the two clamping plates are distributed in a staggered manner.

[0013] Preferably, the surface of the clamping block away from the clamping plate is provided with a groove, the projection shape of the groove is a V-shaped groove, and a rubber pad is arranged in the groove.

[0014] Preferably, the driving mechanism comprises a sliding rod, a bidirectional screw rod and a driving assembly.

[0015] The sliding rod is provided with two sliding rods and is connected with the fixed frame, the bidirectional screw rod is rotatably connected with the fixed frame, the bidirectional screw rod and the sliding rod are distributed side by side, the driving assembly is connected with the fixed frame, and the driving assembly is drivingly connected with the bidirectional screw rod.

[0016] The lower ends of the two mounting seats are provided with mounting blocks, the mounting blocks are slidably connected with the sliding rods, the mounting blocks are threadedly connected with the bidirectional screw rod, and the two mounting blocks are symmetrically distributed on the bidirectional screw rod.

[0017] Preferably, the fixed frame is provided with two limiting strips, the two limiting strips are symmetrically distributed on the fixed frame, and a stop block is rotatably arranged on the workbench.

[0018] The inner circumferential surface of the protective cover is pressed against the surface of the limiting strip, the stop block is rotated to press the stop block against the outer circumferential surface of the protective cover, and the protective cover is made of transparent material.

[0019] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0020] 1. In the utility model, the two ends of the steel bar are connected to the clamping assemblies on the two mounting seats, the two mounting seats are synchronously away from the stretched steel bar, the stress in the whole steel bar is more uniform, and the detection result is more accurate.

[0021] 2. In the utility model, the cylinders on the mounting plate drive the two clamping plates and the plurality of clamping blocks thereon to move close to each other, the clamping blocks can be clamped on the surface of the steel bar, the clamping blocks on the two clamping plates are distributed in a staggered manner, the V-shaped groove on the surface of the clamping block is clamped on the surface of the steel bar, and the increase of the contact points between the clamping block and the surface of the steel bar makes the stress of the steel bar more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural diagram of a reinforcing steel bar tensile testing machine is provided.

[0023] Figure 2 A perspective view of a reinforcing steel bar tensile testing machine is provided.

[0024] Figure 3 A structural diagram of a driving mechanism in an embodiment is provided.

[0025] Reference signs: 1, workbench; 2, fixed frame; 3, protective cover; 4, stop block; 5, sliding rod; 6, mounting seat; 7, mounting block; 8, bidirectional screw rod; 9, air cylinder; 10, mounting plate; 11, limiting strip; 12, clamping plate; 13, clamping block; 14, rubber pad; 15, driving assembly. DETAILED DESCRIPTION

[0026] Embodiment one

[0027] As shown in Figures 1-3 A reinforcing steel bar tensile testing machine is provided, which comprises a workbench 1, a fixed frame 2, a protective cover 3, a mounting seat 6 and a mounting plate 10;

[0028] The fixed frame 2 is connected to the workbench 1, one end of the protective cover 3 is rotatably connected to the fixed frame 2, the mounting seat 6 is provided with two and is slidingly connected to the workbench 1, and the fixed frame 2 is provided with a driving mechanism for driving the two mounting seats 6 to move.

[0029] Further, the fixed frame 2 is provided with two limiting strips 11, the two limiting strips 11 are symmetrically distributed on the fixed frame 2, and the workbench 1 is rotatably provided with a stop block 4;

[0030] The limiting strips 11 are pressed against the inner circumferential surface of the protective cover 3, the stop block 4 is rotated to press the stop block 4 against the outer circumferential surface of the protective cover 3, and the protective cover 3 is made of transparent material.

[0031] The mounting plate 10 is provided with two, the two mounting plates 10 are respectively slidingly connected to the two mounting seats 6, the two mounting plates 10 are each provided with a clamping assembly, the two mounting seats 6 are each provided with a force gauge, and the force gauge is connected to the corresponding mounting plate 10.

[0032] The utility model discloses, when using, the drive mechanism can drive two mounting seat 6 synchronous movement, two mounting seat 6 are far from each other, place the two ends of reinforcing bar on two mounting plate 10, and the clamping assembly on mounting plate 10 clamps the two ends of reinforcing bar, and the drive mechanism drives two mounting seat 6 to be far from each other and stretch reinforcing bar, and mounting seat 6 all is equipped with the dynamometer, and the dynamometer tests the tension of reinforcing bar, the two ends of reinforcing bar are connected on the clamping assembly of two mounting seat 6 in the utility model discloses, and two mounting seat 6 synchronous far from each other and stretch reinforcing bar, make the stress of whole reinforcing bar inside more uniform, and the detection result is more accurate.

[0033] Example two

[0034] As Figure 1 And Figure 3 The utility model discloses a reinforcing bar tensile testing machine, compared with example one, the clamping assembly of the embodiment includes clamping plate 12 and clamping block 13.

[0035] Clamping plate 12 is equipped with two, and two clamping plate 12 all slide connection mounting plate 10 surface, and be equipped with two for driving the cylinder 9 of clamping plate 12 movement on mounting plate 10.

[0036] Clamping block 13 is equipped with multiple, and multiple clamping block 13 are connected the surface of two clamping plate 12 respectively, and clamping block 13 is evenly distributed on two clamping plate 12 side by side.

[0037] The clamping block 13 on two clamping plate 12 all staggered distribution.

[0038] Further, the surface of clamping block 13 far from clamping plate 12 all is equipped with recess, and the recess projection shape is V-shaped groove, and all be equipped with rubber pad 14 in recess.

[0039] In the embodiment, the cylinder 9 on mounting plate 10 drives two clamping plate 12 synchronous movement, and two clamping plate 12 on mounting plate 10 drive multiple clamping block 13 to be close to each other, and clamping block 13 can be clamped on the surface of reinforcing bar, and the clamping block 13 on two clamping plate 12 staggered distribution, and the distance between adjacent two clamping block 13 is greater than the width of clamping block 13, and the V-shaped recess on the surface of clamping block 13 clamps on the surface of reinforcing bar, and the contact point of clamping block 13 and reinforcing bar surface increases, so that reinforcing bar stress is more uniform.

[0040] Example three

[0041] As Figure 1 And Figure 3 The utility model discloses a reinforcing bar tensile testing machine, compared with example one, the drive mechanism of the embodiment includes slide 5, bidirectional screw rod 8 and drive assembly 15.

[0042] The slide bar 5 is provided with two and is connected with the fixed frame 2, the bidirectional screw 8 is rotationally connected with the fixed frame 2, the bidirectional screw 8 and the slide bar 5 are distributed side by side, the driving assembly 15 is connected with the fixed frame 2, and the driving assembly 15 is drivingly connected with the bidirectional screw 8.

[0043] The two mounting seats 6 are provided with mounting blocks 7 at lower ends, the two mounting blocks 7 are slidingly connected with the slide bar 5, the mounting block 7 is threadedly connected with the bidirectional screw 8, and the two mounting blocks 7 are symmetrically distributed on the bidirectional screw 8.

[0044] In the embodiment, the driving assembly 15 drives the bidirectional screw 8 to rotate, the two mounting blocks 7 are threadedly connected with the bidirectional screw 8, the mounting block 7 moves along the axial direction of the bidirectional screw 8, the two mounting blocks 7 slide on the slide bar 5, and the mounting block 7 drives the two mounting seats 6 to move close to each other or move away from each other.

[0045] The embodiment of the utility model is described in detail in combination with the drawings above, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A reinforcing bar tensile testing machine characterised in that, The utility model relates to a kind of test bench, including workbench (1), fixed frame (2), protective cover (3), mounting seat (6) and mounting plate (10); Fixed frame (2) is connected workbench (1), one end of protective cover (3) is rotatably connected fixed frame (2), mounting seat (6) is equipped with two and slidingly connects workbench (1), fixed frame (2) is equipped with the drive mechanism for driving two mounting seat (6) to move; Mounting plate (10) is equipped with two, two mounting plate (10) slidingly connects two mounting seat (6) respectively, two mounting plate (10) are all equipped with clamping assembly on, two mounting seat (6) are all equipped with dynamometer, dynamometer is connected corresponding mounting plate (10); Clamping assembly includes clamping plate (12) and clamping block (13); Clamping plate (12) is equipped with two, two clamping plate (12) slidingly connect the surface of mounting plate (10), two air cylinders (9) for driving clamping plate (12) to move are equipped on mounting plate (10); Clamping block (13) is equipped with multiple, multiple clamping block (13) is connected the surface of two clamping plate (12) respectively, clamping block (13) is evenly distributed side by side on two clamping plate (12); Clamping block (13) on two clamping plate (12) is all staggered distribution.

2. A steel bar tensile testing machine according to claim 1, wherein The surface of clamping block (13) away from clamping plate (12) is all equipped with recess, recess projection shape is V-shaped groove, rubber pad (14) is all equipped in recess.

3. A steel bar tensile testing machine as claimed in claim 1 wherein, Drive mechanism includes slide rod (5), bidirectional screw rod (8) and drive assembly (15); Slide rod (5) is equipped with two and is all connected fixed frame (2), bidirectional screw rod (8) is rotatably connected fixed frame (2), bidirectional screw rod (8) and slide rod (5) are all distributed side by side, drive assembly (15) is connected fixed frame (2), drive assembly (15) is drivingly connected bidirectional screw rod (8); Two mounting seat (6) lower end are all equipped with mounting block (7), two mounting block (7) are all slidingly connected slide rod (5), mounting block (7) is threadedly connected with bidirectional screw rod (8), two mounting block (7) are symmetrically distributed on bidirectional screw rod (8).

4. A steel bar tensile testing machine as claimed in claim 1, wherein Fixed frame (2) is equipped with two limit strips (11), two limit strips (11) are symmetrically distributed on fixed frame (2), workbench (1) is rotatably equipped with stop block (4); Protective cover (3) inner circumferential surface is pressed against the surface of limit strip (11), rotating stop block (4) makes stop block (4) press tightly on the outer circumferential surface of protective cover (3), protective cover (3) is transparent material.

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