Tensile strength detection device for building materials

Abstract

The utility model discloses a tensile strength detection device for building materials, which comprises a base, and a movable seat is arranged on the upper surface of the base; a worm is arranged on the upper end face of the movable seat, the lower end of the worm penetrates through the movable seat, meanwhile, the lower end of the worm is in bearing connection with the movable seat, the outer side face of the worm is meshed with a worm gear, and the worm gear is arranged in the movable seat. A two-way lead screw is fixed to the middle of the worm gear, and the front end and the rear end of the two-way lead screw are connected with the movable seat bearings. According to the tensile strength detection device for the building material, the building material can be clamped, so that the clamping force is larger, the detection effect is not influenced by separation during stretching, the clamping is more stable, cylindrical objects such as reinforcing steel bars can be conveniently clamped, the application range of the tensile strength detection device is widened, the use is more convenient, and the practicability is high. Meanwhile, the detection of the tensile strength is realized, and the building material can be conveniently stretched.

Description

Technical Field

[0001] The utility model relates to the technical field of building material detection, in particular to a tensile strength detection device for building materials. Background Art

[0002] Before building materials are put into use, they need to undergo a series of tests to ensure that all indicators of the materials meet the requirements before they can be used. Tensile testing is an indispensable step. For example, in the patent number "CN216621976U" and the patent name "Rebar Tensile Strength Testing Device", when the rebar needs to be pre-fixed, the clamp is pulled first, and the clamp moves in the through hole opened at the upper end of the fixed plate, so that the clamp drives the limit ring to move, and the limit ring squeezes the first spring, and the first spring undergoes elastic deformation. The pull rod drives the clamp to move through the disassembly device, so that the two sets of clamps are opened. After the rebar is placed in the middle of the clamp, the elastic deformation of the first spring is restored, and the first spring pushes the limit ring to move, and the limit ring drives the pull rod to move, and the pull rod drives the clamp to move, so that the clamp clamps the rebar, which is convenient for pre-fixing the rebar. However, the above structure still has the following problems in actual use:

[0003] The above structure drives the clamping plate to clamp the steel bar through the elastic deformation recovery of the first spring. However, clamping the steel bar only by the elastic force of the spring will make its clamping force insufficient, and then the building material will fall off during the tensile test, thereby affecting the tensile strength detection.

[0004] Therefore, we proposed a tensile strength testing device for building materials that can solve the above problems well. Utility Model Content

[0005] The utility model aims to provide a tensile strength testing device for building materials, so as to solve the problem in the current market proposed by the above background technology that the clamping force is not enough, and the building materials will fall off during the tensile test, thus affecting the tensile strength detection.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tensile strength testing device for building materials, comprising a base, wherein a movable seat is provided on the upper surface of the base;

[0007] It also includes: a worm is arranged on the upper end surface of the moving seat, and the lower end of the worm penetrates the moving seat, and the lower end of the worm is connected to the moving seat in a bearing manner, and a worm wheel is meshed on the outer side surface of the worm, and the worm wheel is arranged inside the moving seat;

[0008] A bidirectional screw is fixed in the middle of the worm wheel, and the front and rear ends of the bidirectional screw are connected to the moving seat bearing, and the outer side of the bidirectional screw is threadedly connected to the moving rod, and the inner end of the moving rod passes through the inner side of the moving seat and is fixed to the clamp.

[0009] Preferably, two groups of movable seats are provided, and the right movable seat is fixed to the upper surface of the base, and the left movable seat is slidably connected to the base.

[0010] Preferably, stable sliders are fixed to both the upper and lower sides of the moving rod, and a sliding connection is formed between the stable slider and the moving seat.

[0011] Preferably, the splints are provided in two groups, and each group has two splints.

[0012] Preferably, an anti-skid pad is bonded to the inner side of the clamping plate, and the outer side of the anti-skid pad is arranged in a convex shape, and an arc groove is also provided below the anti-skid pad on the inner side of the clamping plate.

[0013] Preferably, the front door of the base is provided with a scale, and a servo motor is fixed with bolts on the rear side of the base, and a rotating shaft is fixed on the output end of the servo motor, and the rotating shaft is arranged inside the base, and the front end of the rotating shaft is connected to the base bearing.

[0014] Preferably, a gear is fixed on the outer side surface of the rotating shaft, and the upper end of the gear is meshed with a rack, and the rack is arranged inside the base, and the upper end surface of the rack is fixed to the moving seat.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the tensile strength detection device for building materials can not only clamp the building materials, thereby making the clamping force greater, and will not affect the detection effect due to detachment during stretching, thereby making its clamping more stable, but also convenient for clamping cylindrical objects such as steel bars, thereby making its application range wider and more convenient to use, while realizing the tensile strength detection and facilitating the stretching of building materials. The specific contents are as follows:

[0016] (1) The worm gear is driven to rotate by the worm, so that the two sets of moving rods are driven to approach each other through the bidirectional screw, so that the moving rods drive the clamping plates to approach each other, so that the clamping plates clamp the building materials, thereby making the clamping force stronger, and the detection effect will not be affected by detachment during stretching, thereby making the clamping more stable;

[0017] Furthermore, an anti-skid pad is bonded to the inner side of the clamping plate, and the anti-skid pad can provide an anti-skid effect, thereby improving the stability of the clamping;

[0018] Furthermore, an arc groove is provided on the inner side of the clamping plate, and the arrangement of the arc groove makes it easy for the detection device to clamp cylindrical objects such as steel bars;

[0019] (2) The servo motor drives the rotating shaft to rotate, thereby causing the rotating shaft to drive the gear to rotate together, so that the gear drives the rack to move to the left, so that the rack drives the fixed moving seat to move together, and then the left moving seat moves away from the right moving seat, thereby realizing the tensile strength test;

[0020] When the detection is completed, it is only necessary to control the servo motor to drive the rotating shaft to reverse, thereby driving the meshing rack through the gear to move to the right, so that the rack drives the moving seat fixed on its upper end surface to approach the right moving seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the top-sectional structure of the connection between the worm wheel and the worm of the utility model;

[0025] Figure 5 This is a schematic diagram of the side section structure of the connection between the gear and the rotating shaft of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the connection between the splint and the anti-skid pad of the utility model.

[0027] In the figure: 1. base; 2. scale; 3. servo motor; 4. rotating shaft; 5. gear; 6. rack; 7. moving seat; 8. worm; 9. worm wheel; 10. bidirectional screw; 11. moving rod; 12. stabilizing slider; 13. splint; 14. anti-slip pad; 15. arc groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0030] Embodiment 1: In order to solve the problem in the prior art that the clamping force is not enough, and the building materials will fall off during the tensile test, thereby affecting the detection of tensile strength, the following scheme is disclosed, including a base 1, and a movable seat 7 is arranged on the upper surface of the base 1; it also includes: a worm 8 is arranged on the upper end surface of the movable seat 7, and the lower end of the worm 8 passes through the movable seat 7, and the lower end of the worm 8 is connected to the movable seat 7 in a bearing manner, and the outer side surface of the worm 8 is meshed with a worm wheel 9, and the worm wheel 9 is arranged inside the movable seat 7; a bidirectional screw 10 is fixed in the middle of the worm wheel 9, and the front and rear ends of the bidirectional screw 10 are both connected to the movable seat 7 bearing, and the outer side surface of the bidirectional screw 10 is threadedly connected to a movable rod 11, and the inner end of the movable rod 11 passes through the inner side of the movable seat 7 and is fixed to the clamping plate 13;

[0031] First, the building material is placed between the two groups of clamping plates 13, and the worm 8 is rotated to drive the worm wheel 9 to rotate, and the worm wheel 9 rotates, so that it drives the bidirectional screw 10 to rotate together, and then the bidirectional screw 10 drives the two groups of moving rods 11 to approach each other, so that the moving rods 11 drive the clamping plates 13 to approach each other, so that the clamping plates 13 clamp the building material, and the inner side of the clamping plate 13 is also bonded with an anti-skid pad 14, and the anti-skid pad 14 can provide an anti-skid effect, thereby improving the stability of the clamping, and at the same time, the self-locking property of the worm 8 and the worm wheel 9 will make the clamping force stronger, and will not affect the detection effect due to detachment during stretching, thereby making the clamping more stable;

[0032] Embodiment 2: Different from Embodiment 1, this embodiment is convenient for clamping cylindrical building materials such as steel bars. Figure 2-Figure 4 and Figure 6 , two groups of movable seats 7 are provided, and the right movable seat 7 is fixed to the upper surface of the base 1, and the left movable seat 7 is slidably connected to the base 1, stable sliders 12 are fixed to the upper and lower sides of the movable rod 11, and the stable slider 12 is slidably connected to the movable seat 7, two groups of clamps 13 are provided, and each group is provided with two, the inner side of the clamp 13 is bonded with an anti-skid pad 14, and the outer side of the anti-skid pad 14 is convex, and an arc groove 15 is also provided below the anti-skid pad 14 on the inner side of the clamp 13;

[0033] When it is necessary to clamp the steel bars, etc., it is only necessary to place the steel bars in the arc groove 15, and by rotating the worm 8, the worm 8 drives the worm wheel 9 to rotate, so that the worm wheel 9 drives the bidirectional screw 10 to rotate together, and the bidirectional screw 10 drives the two groups of moving rods 11 to approach each other, and the upper and lower sides of the moving rod 11 are fixed with stable sliders 12, and the sliding connection formed by the stable slider 12 and the moving seat 7 makes the moving rod 11 more stable when moving, so that the moving rod 11 drives the clamping plate 13 to approach each other, so that the steel bars fit with the arc groove 15, and the clamping plate 13 can achieve the effect of clamping the steel bars;

[0034] Embodiment 3: Different from Embodiment 2, this embodiment realizes the detection of tensile strength and is convenient for stretching building materials. Figure 2 and Figure 5 , a scale 2 is provided on the front door of the base 1, and a servo motor 3 is bolted to the rear side of the base 1, and a rotating shaft 4 is fixed to the output end of the servo motor 3, and the rotating shaft 4 is arranged inside the base 1, and the front end of the rotating shaft 4 is connected to the bearing of the base 1, and a gear 5 is fixed to the outer side of the rotating shaft 4, and the upper end of the gear 5 is meshed with a rack 6, and the rack 6 is arranged inside the base 1, and the upper end surface of the rack 6 is fixed to the moving seat 7;

[0035] By starting the servo motor 3, the servo motor 3 drives the rotating shaft 4 to rotate, and through the rotation of the rotating shaft 4, the rotating shaft 4 drives the gear 5 to rotate together, and through the meshing between the gear 5 and the rack 6, the rack 6 moves to the left, so that the rack 6 drives the fixed moving seat 7 to move together, and the left moving seat 7 is moved away from the right moving seat 7, so as to realize the tensile strength test, and through the setting of the scale 2, the stretching distance can be observed, so as to facilitate the judgment of the detection personnel. When the detection is completed, it is only necessary to control the servo motor 3 to drive the rotating shaft 4 to reverse, and then drive the gear 5 to reverse together, so that the gear 5 drives the meshing rack 6 to move to the right, so that the rack 6 drives the moving seat 7 fixed on its upper end face to approach the right moving seat 7.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tensile strength testing device for building materials, comprising a base (1), wherein a movable seat (7) is arranged on the upper surface of the base (1); It is characterized in that Also includes: The upper end surface of the movable seat (7) is provided with a worm (8), and the lower end of the worm (8) penetrates the movable seat (7), and the lower end of the worm (8) is connected to the movable seat (7) in a bearing manner, and the outer side surface of the worm (8) is meshed with a worm wheel (9), and the worm wheel (9) is arranged inside the movable seat (7); A bidirectional screw rod (10) is fixed in the middle of the worm wheel (9), and the front and rear ends of the bidirectional screw rod (10) are connected to the bearing of the movable seat (7), and the outer side surface of the bidirectional screw rod (10) is threadedly connected to a movable rod (11), and the inner end of the movable rod (11) passes through the inner side of the movable seat (7) and is fixed to a clamping plate (13).

2. A tensile strength testing device for building materials according to claim 1, characterized in that: The movable seats (7) are provided in two groups, and the right movable seat (7) is fixed to the upper surface of the base (1), and the left movable seat (7) is slidably connected to the base (1).

3. A tensile strength testing device for building materials according to claim 1, characterized in that: A stabilizing slide block (12) is fixed to both the upper and lower sides of the moving rod (11), and a sliding connection is formed between the stabilizing slide block (12) and the moving seat (7).

4. A tensile strength testing device for building materials according to claim 1, characterized in that: The clamping plates (13) are provided in two groups, and each group is provided with two clamping plates.

5. The tensile strength testing device for building materials according to claim 1, characterized in that: The inner side of the clamping plate (13) is bonded with an anti-skid pad (14), and the outer side of the anti-skid pad (14) is arranged in a convex shape. At the same time, an arc groove (15) is provided below the anti-skid pad (14) on the inner side of the clamping plate (13).

6. A tensile strength testing device for building materials according to claim 1, characterized in that: The front door of the base (1) is provided with a scale (2), and a servo motor (3) is fixed to the rear side of the base (1) by bolts, and a rotating shaft (4) is fixed to the output end of the servo motor (3), and the rotating shaft (4) is arranged inside the base (1), and the front end of the rotating shaft (4) is connected to the bearing of the base (1).

7. A tensile strength testing device for building materials according to claim 6, characterized in that: A gear (5) is fixed on the outer side surface of the rotating shaft (4), and the upper end of the gear (5) is meshed with a rack (6), and the rack (6) is arranged inside the base (1), and the upper end surface of the rack (6) is fixed to the moving seat (7).

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