Adjustable anti-bending testing machine

Abstract

The utility model discloses an adjustable anti-bending testing machine. According to the technical scheme, the adjustable anti-bending testing machine is characterized by comprising a working table, fixed supporting columns arranged on the two sides of the working table and fixedly connected with the working table and a cross beam arranged between the two fixed supporting columns and fixedly connected with the fixed supporting columns, an upper clamping block is arranged on the cross beam, and a set of lower clamping blocks are symmetrically arranged on the working table; fixing devices are arranged on the two sides of the set of lower clamping blocks, each fixing device comprises a fixing frame in sliding connection with the workbench, a groove is formed in each fixing frame, a two-way threaded rod is rotationally connected into each groove, one side, extending out of each groove, of each two-way threaded rod is driven by a first motor, and fixing plates are symmetrically arranged on the two sides of each two-way threaded rod. According to the utility model, the position of the material is accurately positioned by arranging the fixing device, so that the accuracy of material detection is improved.

Description

Technical Field

[0001] The utility model relates to a flexural resistance testing instrument, in particular to an adjustable flexural resistance testing machine. Background Art

[0002] The flexural testing machine is mainly used for flexural strength tests of concrete, refractory materials, bricks and other specimens, and compressive strength tests of cement, mortar, refractory materials, bricks and other building materials.

[0003] Common flexural testing machines require manual placement of the material to be tested, and the positioning of the material is determined by the operator's proficiency. This positioning method is prone to deviation, resulting in a deviation between the center of the material position and the downward pressure position. Therefore, a new solution is proposed to solve this problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an adjustable flexural testing machine, which can accurately locate the position of the material by setting a fixing device to improve the accuracy of material testing.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an adjustable flexural testing machine, comprising a workbench, fixed pillars arranged on both sides of the workbench and fixedly connected to the workbench, and a crossbeam arranged between the two fixed pillars and fixedly connected to the fixed pillars, an upper clamping block is arranged on the crossbeam, a group of lower clamping blocks are symmetrically arranged on the workbench, and a group of lower clamping blocks are arranged on both sides of the lower clamping blocks. A fixing device is arranged, and the fixing device comprises a fixing frame slidably connected to the workbench, a groove is opened on the fixing frame, a bidirectional threaded rod is rotatably connected in the groove, one side of the bidirectional threaded rod extending out of the groove is driven by a first motor, and fixing plates are symmetrically arranged on both sides of the bidirectional threaded rod.

[0006] By adopting the above technical solution, after the material position is placed between a group of lower clamping blocks, the second motors on both sides are controlled to output synchronously to drive the movable seats on both sides that are threadedly connected to the screw rod to move relative to each other, so that the material contacts the side wall of the fixed frame to limit the length position of the material. After the adjustment, the output of the first motor is controlled to drive the bidirectional threaded rod to rotate, and the fixed plate threadedly connected to the bidirectional threaded rod moves relatively along the bidirectional threaded rod to fix the width of the material placed on the lower clamping blocks, so that the center of the material corresponds to the center of a group of lower clamping blocks, thereby improving the accuracy of material detection.

[0007] The utility model is further configured as follows: a limiting groove is provided in the groove, the connecting end of the fixing plate and the fixing frame is fixedly connected to the limiting plate, and the limiting plate matches the limiting groove.

[0008] By adopting the above technical solution, the movement of the fixed plate is further limited by the limiting plate fixedly connected to the fixed plate and the limiting groove opened in the groove, so as to improve the stability of the movement of the fixed plate.

[0009] The utility model is further configured as follows: moving grooves are opened on both sides of the workbench, screw rods are arranged in the moving grooves, and a moving seat is fixedly connected to the bottom of the fixing frame.

[0010] By adopting the above technical solution, the moving seat is threadedly connected to the screw rod, which drives the screw rod to rotate, thereby driving the moving seat to perform linear reciprocating motion along the setting direction of the moving groove.

[0011] The utility model is further configured that: the screw rod is driven by a second motor.

[0012] The utility model is further configured as follows: the bottom of the fixing frame is in conflict with the surface of the workbench.

[0013] By adopting the above technical solution, the bottom of the fixing frame contacts the surface of the workbench to further restrict the movement of the fixing frame, so that the fixing frame performs linear reciprocating motion along the length direction of the screw rod under the drive of the second motor.

[0014] In summary, the utility model has the following beneficial effects:

[0015] By setting a fixing device, the center position of the material and the center position between a set of lower clamps can be made more accurate compared to manual placement, which can further improve the accuracy of material testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 for Figure 2 AA section view.

[0019] In the figure: 1. workbench; 2. fixed support; 3. crossbeam; 4. upper clamping block; 5. lower clamping block; 6. fixed frame; 7. first motor; 8. moving groove; 9. moving seat; 10. bidirectional threaded rod; 11. limit plate; 12. fixed plate; 13. screw rod; 14. second motor. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] An adjustable flexural testing machine, such as Figure 1-3 As shown, it includes a workbench 1, fixed pillars 2 arranged on both sides of the workbench 1 and fixedly connected to the workbench 1, and a crossbeam 3 arranged between the two fixed pillars 2 and fixedly connected to the fixed pillars 2, an upper clamping block 4 is arranged on the crossbeam 3, and a group of lower clamping blocks 5 are symmetrically arranged on the workbench 1, and fixing devices are arranged on both sides of the group of lower clamping blocks 5.

[0025] The fixing device includes a fixing frame 6 which is slidably connected to the workbench 1, and a groove is provided on the fixing frame 6. A bidirectional threaded rod 10 is rotatably connected in the groove. One side of the bidirectional threaded rod 10 extending out of the groove is driven by a first motor 7. Fixing plates 12 are symmetrically arranged on both sides of the bidirectional threaded rod 10, and a limiting groove is provided in the groove. The connecting end of the fixing plate 12 and the fixing frame 6 is fixedly connected to a limiting plate 11, and the limiting plate 11 cooperates with the limiting groove.

[0026] Moving grooves 8 are opened on both sides of the workbench 1, and screw rods 13 are arranged in the moving grooves 8. The bottom of the fixed frame 6 is fixedly connected to a moving seat 9. The screw rod 13 is driven by a second motor 14, and the bottom of the fixed frame 6 contacts the surface of the workbench 1.

[0027] Working principle: After the material is positioned between a group of lower clamping blocks 5, the second motors 14 on both sides are controlled to output synchronously to drive the movable seats 9 on both sides that are threadedly connected to the screw rods 13 to move relative to each other, so that the material contacts the side walls of the fixed frame 6 to limit the length position of the material. After adjustment, the output of the first motor 7 is controlled to drive the bidirectional threaded rod 10 to rotate, and the fixed plate 12 threadedly connected to the bidirectional threaded rod 10 moves relative to the bidirectional threaded rod 10 to fix the width of the material placed on the lower clamping blocks 5, so that the center of the material corresponds to the center of a group of lower clamping blocks 5, thereby improving the accuracy of material detection.

[0028] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable flexural testing machine, comprising a workbench (1), fixed pillars (2) arranged on both sides of the workbench (1) and fixedly connected to the workbench (1), and a crossbeam (3) arranged between the two fixed pillars (2) and fixedly connected to the fixed pillars (2), wherein an upper clamping block (4) is arranged on the crossbeam (3), and a group of lower clamping blocks (5) are symmetrically arranged on the workbench (1), characterized in that: A fixing device is arranged on both sides of a group of the lower clamping blocks (5), and the fixing device comprises a fixing frame (6) slidably connected to the workbench (1), and a groove is provided on the fixing frame (6), and a bidirectional threaded rod (10) is rotatably connected in the groove, and one side of the bidirectional threaded rod (10) extending out of the groove is driven by a first motor (7), and fixing plates (12) are symmetrically arranged on both sides of the bidirectional threaded rod (10).

2. The adjustable flexural testing machine according to claim 1, characterized in that: A limiting groove is provided in the groove, and the connection end of the fixing plate (12) and the fixing frame (6) is fixedly connected to the limiting plate (11), and the limiting plate (11) cooperates with the limiting groove.

3. The adjustable flexural testing machine according to claim 1, characterized in that: The workbench (1) is provided with movable grooves (8) on both sides, and screw rods (13) are arranged in the movable grooves (8). The bottom of the fixed frame (6) is fixedly connected with a movable seat (9).

4. The adjustable flexural testing machine according to claim 3, characterized in that: The screw rod (13) is driven by a second motor (14).

5. The adjustable flexural testing machine according to claim 1, characterized in that: The bottom of the fixing frame (6) contacts the surface of the workbench (1).

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