Building material shearing test device

Abstract

The utility model relates to the technical field of steel bar shearing, in particular to a building material shearing testing device which comprises a base, a fixing frame is fixedly arranged on the base, a containing groove is formed in the fixing frame, through holes communicated with the containing groove are formed in the two sides of the fixing frame, two sets of pulling plates are arranged in the containing groove at intervals in a sliding mode, and the adjacent sides of the two sets of pulling plates abut against each other. A through hole is formed in each pulling plate, a limiting hole flush with the through hole is formed in each pulling plate, a set of first electric push rods are fixedly arranged on the two side walls of the containing groove respectively, output shafts of the two sets of first electric push rods are aligned with the corresponding set of pulling plates respectively, and limiting mechanisms are arranged on the pulling plates. The two groups of pulling plates can limit the shearing section of the reinforcing steel bar in the shearing test, so that the reinforcing steel bar can be quickly sheared, and the test efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of steel bar shearing, specifically a building material shearing testing device. Background Technology

[0002] Steel bars are one of the important building materials in construction projects, which can improve the strength of concrete structures. In order to ensure that steel bars will not fail under lateral loads, they usually need to be tested for shear before use.

[0003] Utility model patent CN222635966U discloses a rebar field testing instrument, including a base. Support plates are fixedly connected to the upper ends of both sides of the base, and a top plate is fixed to the upper end of the support plates. An installation groove is formed on the side of the support plates, and a positioning block is installed inside the installation groove. A pressure detection module is installed at the lower end of the installation groove. An electric push rod is installed at the upper end of the installation groove, and a pressure block is installed at the lower end of the electric push rod. A turntable is installed at the lower end of the top plate, and a positioning frame is bolted to the lower end of the turntable. Cylinders pass through both sides of the positioning frame. This rebar field testing instrument can independently test the shear and compressive strength of rebar by setting two independent testing structures. The turntable structure allows for switching between the two testing structures, improving ease of use. The V-shaped positioning block improves the reliability and stability of rebar positioning during testing.

[0004] The device is equipped with a base, with support plates fixedly connected to both sides of the base. When testing the reinforcing bars, the two ends of the reinforcing bars are clamped and limited by positioning blocks and pressure blocks on the two sets of support plates. Then, the test is carried out by the detection block and shearing block at the bottom of the turntable. However, the section of the reinforcing bar below the shearing block is suspended in the air. When the shearing block abuts against the reinforcing bar, the reinforcing bar will bend and deform downward as the shearing block descends, making it impossible to directly shear the reinforcing bar, resulting in low shearing efficiency. Utility Model Content

[0005] To address the problem of low shearing efficiency in existing technologies, this utility model provides a shearing testing device for building materials.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] This utility model provides a building material shearing test device, including a base, a fixed frame fixedly mounted on the base, a placement groove provided in the fixed frame, through holes on both sides of the fixed frame communicating with the placement groove, two sets of pull plates slidably arranged at intervals in the placement groove, the adjacent sides of the two sets of pull plates abutting each other, the pull plates are provided with limiting holes flush with the through holes, a set of electric push rods are fixedly mounted on each of the two side walls of the placement groove, the output shafts of the two sets of electric push rods are each aligned with a set of pull plates, and the pull plates are provided with limiting mechanisms.

[0008] Preferably, the limiting mechanism includes a second electric push rod, a mounting plate, and a clamping plate. The pull plate has a groove connecting to the limiting hole. Two sets of mounting plates are slidably arranged in the groove at intervals along the vertical direction. A clamping plate is provided on the side of the mounting plate near the limiting hole. Both the upper and lower ends of the groove have countersunk holes. The second electric push rod is fixedly installed in the countersunk hole. The output shaft of the second electric push rod is fixedly connected to the adjacent mounting plate. When the rebar to be tested passes through the through hole and the limiting hole, the operator activates the second electric push rod in the countersunk hole, causing the output shaft of the second electric push rod to drive the mounting plate and clamping plate to approach and abut against the rebar. The clamping plates in the two sets of grooves achieve multi-point abutment and clamping of the rebar, ensuring the stability of the rebar during shearing and ensuring the safety of the test.

[0009] Preferably, a plug rod is fixedly provided on the side of the clamping plate near the mounting plate. The mounting plate has a plug hole for fitting the plug rod. A spring is provided between the mounting plate and the clamping plate. The spring is sleeved on the plug rod, and the two ends of the spring are connected to the mounting plate and the clamping plate respectively. The plug rod and the plug hole limit the clamping plate, and the spring protects the clamping plate during clamping operations. After the clamping plate abuts against the rebar, the plug rod can slide along the plug hole and compress the spring, avoiding direct collision between the clamping plate and the rebar during clamping and ensuring the safety of the clamping plate.

[0010] Preferably, limit blocks are fixedly provided at both ends of the mounting plate, and the side wall of the slide groove is provided with a limit groove that matches the limit blocks. The mounting plate is further limited by the limit blocks and the limit groove, so as to ensure the stability of the mounting plate sliding in the slide groove.

[0011] Preferably, a set of card plates is fixedly provided at the upper and lower ends of the placement groove, and a card groove aligned with the pull plate is provided on the adjacent side of the two sets of card plates. A card strip that matches the card groove is fixedly provided on the pull plate. The card plates and card grooves are used to limit the pull plate and ensure the stability of the pull plate when it slides.

[0012] Preferably, a pressure sensor aligned with the electric push rod is fixedly installed on the side wall of the pull plate. The pressure sensor can transmit the thrust force on the pull plate when the output shaft of the electric push rod pushes the pull plate, making it easy for the operator to calculate the shear strength of the reinforcing bar.

[0013] Preferably, the limiting holes are set in multiple groups along the horizontal direction and their diameters decrease sequentially. By setting multiple groups of limiting holes, the operator can slide the pull plate according to the diameter of the reinforcing bar to be tested during the test, and then adjust the limiting holes that are aligned with the through holes so that the diameter of the limiting holes can better fit the reinforcing bar and ensure the accuracy of the test.

[0014] Preferably, a control terminal is fixedly installed on the base. Electric push rod one, electric push rod two, and pressure sensor are all electrically connected to the control terminal. Operators can conveniently adjust the working status of electric push rod one and electric push rod two through the control terminal, making operation convenient.

[0015] The advantages of adopting the above technical solution are:

[0016] This utility model includes a base with a fixed frame fixedly mounted on it. The fixed frame contains a placement groove, and through holes on both sides of the fixed frame connect to the placement groove. Two sets of pull plates are slidably arranged at intervals within the placement groove, with adjacent sides of the two sets of pull plates abutting each other. Each pull plate has a limiting hole flush with the through hole. A set of electric push rods is fixedly mounted on each of the two side walls of the placement groove, with the output shafts of each set of electric push rods aligned with a pull plate. Limiting mechanisms are provided on the pull plates. In this device, the operator passes the reinforcing bar to be tested through the through hole and the limiting holes on the two sets of pull plates, enabling the two sets of pull plates to limit the shearing segment of the reinforcing bar during the shearing test, achieving rapid shearing of the reinforcing bar and improving testing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0019] Figure 2 A partial cross-sectional view of the present invention is shown;

[0020] Figure 3 A partial structural schematic diagram of the present invention is shown.

[0021] The components include: 1. Base; 2. Fixing frame; 201. Placement slot; 202. Through hole; 203. Clamping plate; 3. Pull plate; 301. Limiting hole; 302. Sliding groove; 303. Limiting groove; 304. Clamping strip; 305. Pressure sensor; 4. Electric push rod one; 5. Mounting plate; 6. Clamping plate; 601. Insert rod; 602. Spring; 7. Electric push rod two. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] like Figure 1-3 As shown in the figure, this utility model embodiment discloses a building material shearing test device, including a base 1, a fixed frame 2 fixedly mounted on the base 1, a placement groove 201 provided in the fixed frame 2, through holes 202 communicating with the placement groove 201 on both sides of the fixed frame 2, two sets of pull plates 3 slidably arranged at intervals in the placement groove 201, the adjacent sides of the two sets of pull plates 3 abutting each other, the pull plates 3 are provided with limiting holes 301 flush with the through holes 202, a set of electric push rods 4 are fixedly mounted on the two side walls of the placement groove 201 respectively, the output shafts of the two sets of electric push rods 4 are each aligned with a set of pull plates 3, and the pull plates 3 are provided with limiting mechanisms.

[0024] In at least one embodiment, the limiting mechanism includes an electric push rod 7, a mounting plate 5, and a clamping plate 6. The pull plate 3 has a groove 302 that connects to the limiting hole 301. Two sets of mounting plates 5 are slidably arranged in the groove 302 at intervals along the vertical direction. A clamping plate 6 is provided on the side of the mounting plate 5 near the limiting hole 301. The upper and lower ends of the groove 302 are provided with countersunk holes. The electric push rod 7 is fixedly installed in the countersunk holes. The output shaft of the electric push rod 7 is fixedly connected to the adjacent mounting plate 5. When the reinforcing bar to be tested passes through the through hole 202 and the limiting hole 301, the operator starts the electric push rod 7 in the countersunk hole, so that the output shaft of the electric push rod 7 drives the mounting plate 5 and the clamping plate 6 to approach and abut against the reinforcing bar. The clamping plates 6 in the two sets of grooves 302 realize multi-point abutment and clamping of the reinforcing bar, ensuring the stability of the reinforcing bar during shearing and ensuring the safety of the test.

[0025] In at least one embodiment, a plug rod 601 is fixedly provided on the side of the clamping plate 6 near the mounting plate 5. The mounting plate 5 is provided with a plug hole for fitting the plug rod 601. A spring 602 is provided between the mounting plate 5 and the clamping plate 6. The spring 602 is sleeved on the plug rod 601. The two ends of the spring 602 are respectively connected to the mounting plate 5 and the clamping plate 6. The plug rod 601 and the plug hole limit the clamping plate 6, and the spring 602 protects the clamping plate 6 during clamping operations. After the clamping plate 6 abuts against the steel bar, the plug rod 601 can slide along the plug hole and compress the spring 602, avoiding direct collision between the clamping plate 6 and the steel bar during clamping, thus ensuring the safety of the clamping plate 6.

[0026] In at least one embodiment, limiting blocks are fixedly provided at both ends of the mounting plate 5, and the side wall of the slide groove 302 is provided with limiting grooves 303 that are matched with the limiting blocks. By setting the limiting blocks and limiting grooves 303, the mounting plate 5 is further limited, ensuring the stability of the mounting plate 5 sliding in the slide groove 302.

[0027] In at least one embodiment, a set of card plates 203 are fixedly provided at the upper and lower ends of the placement groove 201, and a card groove aligned with the pull plate 3 is provided on the adjacent side of the two sets of card plates 203. A card strip 304 that matches the card groove is fixedly provided on the pull plate 3. The card plates 203 and the card groove are used to limit the pull plate 3 and ensure the stability of the pull plate 3 when it slides.

[0028] In at least one embodiment, a pressure sensor 305 aligned with the electric push rod 4 is fixedly installed on the side wall of the pull plate 3. The pressure sensor 305 can transmit the pushing force on the pull plate 3 when the output shaft of the electric push rod 4 pushes the pull plate 3, making it easier for the operator to calculate the shear strength of the steel bar.

[0029] In at least one embodiment, the limiting holes 301 are set in multiple groups along the horizontal direction and their diameters decrease sequentially. By setting multiple groups of limiting holes 301, the operator can slide the pull plate 3 according to the diameter of the reinforcing bar to be tested during the test, thereby adjusting the limiting holes 301 that are aligned with the through holes 202, so that the diameter of the limiting holes 301 can better fit the reinforcing bar and ensure the accuracy of the test.

[0030] In at least one embodiment, a control terminal is fixedly installed on the base 1. The electric push rod 4, the electric push rod 7, and the pressure sensor are all electrically connected to the control terminal. The operator can conveniently adjust the working status of the electric push rod 4 and the electric push rod 7 through the control terminal, making the operation convenient.

[0031] During the shearing test of reinforcing bars, the operator inserts the reinforcing bar to be tested through the through hole 202 on the fixed frame 2 and the limiting hole 301 on the pull plate 3. The through hole 202 and the limiting hole 301 initially limit the reinforcing bar. Then, the operator activates two sets of electric push rods 4, causing the output shafts of the two sets of electric push rods 4 to extend and push the two sets of pull plates 3, causing the two sets of pull plates 3 to move away from each other. The adjacent sides of the two sets of pull plates 3 abut against each other. During the sliding process of the two sets of pull plates 3, the reinforcing bar is clamped against the inner wall of the limiting hole 301. Then, the section of the reinforcing bar within the limiting hole 301 is sheared, achieving quick shearing of the reinforcing bar and improving testing efficiency. Furthermore, after the reinforcing bar passes through the through hole 202 and the limiting hole 301, the operator can further limit the reinforcing bar within the limiting hole 301 through the limiting mechanism in the pull plate 3, ensuring the stability of the reinforcing bar during shearing, preventing the reinforcing bar from detaching after shearing, and ensuring the safety of the test.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A shear testing device for building materials, characterized in that: include The base has a fixed frame, and a placement slot is provided inside the fixed frame. The fixed frame has through holes on both sides that connect to the placement slot. Two sets of pull plates are slidably arranged in the placement slot at intervals. The adjacent sides of the two sets of pull plates abut against each other. The pull plates have limiting holes flush with the through holes. A set of electric push rods is fixedly installed on each of the two side walls of the placement slot. The output shafts of the two sets of electric push rods are each aligned with a set of pull plates. The pull plates are provided with limiting mechanisms.

2. The building material shear testing device according to claim 1, characterized in that: The limiting mechanism includes an electric push rod II, a mounting plate, and a clamping plate. The pull plate has a groove that connects to the limiting hole. Two sets of mounting plates are slidably arranged in the groove along the vertical direction. A clamping plate is provided on the side of the mounting plate near the limiting hole. The upper and lower ends of the groove are provided with countersunk holes. The electric push rod II is fixedly installed in the countersunk holes. The output shaft of the electric push rod II is fixedly connected to the adjacent mounting plate.

3. The building material shear testing device according to claim 2, characterized in that: Limiting blocks are fixedly installed at both ends of the mounting plate, and the side wall of the slide groove is provided with a limiting groove that matches the limiting blocks.

4. The building material shear testing device according to claim 1, characterized in that: A set of card plates is fixedly installed at the upper and lower ends of the placement slot, and a card slot aligned with the pull plate is provided on the adjacent side of the two sets of card plates. A card strip that matches the card slot is fixedly installed on the pull plate.

5. The building material shear testing device according to claim 1, characterized in that: A pressure sensor aligned with the electric push rod is fixedly installed on the side wall of the pull plate.

6. The building material shear testing device according to claim 1, characterized in that: The limiting holes are arranged in multiple groups along the horizontal direction, and their diameters decrease sequentially.

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