Mold for sizing slurry material on surface of bonding strength test sample

Abstract

The utility model discloses a mold for sizing a slurry material on the surface of a bonding strength test sample, which is characterized in that a plurality of single petal molds are arranged in an annular outer mold and are connected end to end to form an annular inner mold, so that after hydraulic lime mortar is smeared in the annular inner mold for sizing, the annular outer mold can be detached firstly, and then the annular outer mold can be detached; compared with a traditional mold formed by two semicircular rings, the contact area between the single petal molds and lime mortar is much smaller, so that the attaching tightness degree is much smaller, and a shaped mortar layer is basically not disturbed when the single petal molds are separated; therefore, compared with the prior art, the device disclosed by the utility model has the advantages that the slurry layer is not easy to disturb during demolding, and meanwhile, the sample preparation efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of bonding strength testing tools, in particular to a mold for shaping slurry material on the surface of a bonding strength testing sample. Background Art

[0002] In the bonding strength test, the first step is to process a standard cube or cylindrical rock sample. One method is to apply hydraulic lime mortar on one side of the cube or cylinder, and the slurry layer solidifies to the test age. The pulling pieces are bonded to both sides of the sample with a high-strength adhesive, and the test is carried out on a universal testing machine. When applying the hydraulic lime mortar, a mold is required for shaping. However, the mold currently used is a circular mold formed by connecting two semicircular rings end to end. When this mold is demolded, the contact area between the mold and the lime mortar is relatively large and the fit is relatively tight. It is easy to disturb the shaped slurry layer during demolding, and it is easy for the mortar to stick to the mold or the slurry layer to be pulled when the mold is detached. Therefore, the current mold still has defects such as easy disturbance of the slurry layer during demolding and low sample preparation efficiency. Utility Model Content

[0003] (1) Technical problems to be solved:

[0004] Aiming at the defect that the existing molds are very easy to disturb the slurry layer during demoulding, the utility model provides a mold which is not easy to disturb the slurry layer during demoulding.

[0005] (2) The technical solution adopted by the utility model is as follows:

[0006] A mold for shaping slurry material on the surface of a bonding strength test specimen comprises a first semicircular ring and a second semicircular ring, the first semicircular ring and the second semicircular ring are connected end to end to form an annular outer mold, the first semicircular ring and the second semicircular ring are connected by a connecting component, and is characterized in that a plurality of single-piece petal molds are arranged inside the annular outer mold, and the plurality of single-piece petal molds are connected end to end to form an annular inner mold.

[0007] A further technical solution is that the connecting assembly includes one end of a first semicircular ring and an end corresponding to a second semicircular ring hinged through a pin shaft, a first connecting plate is arranged at the other end of the first semicircular ring, and a second connecting plate is arranged at the end of the second semicircular ring corresponding to the first connecting plate, a locking bolt is hinged on the first connecting plate through a connecting shaft, a locking nut is threadedly connected to the locking bolt, and a "U"-shaped slot is opened on the second connecting plate, and the locking bolt is located inside the slot.

[0008] A further technical solution is that it also includes a demoulding rod, and a demoulding hole is opened on a side of the single petal mold close to the annular outer mold.

[0009] A further technical solution is to further include a demoulding plate, the diameter of which matches the inner diameter of the annular inner mold, and a handle is provided on the demoulding plate.

[0010] A further technical solution is that the single flap mold is made of polytetrafluoroethylene material.

[0011] (3) Due to the adoption of the above technical solution, the beneficial effect of the utility model is as follows: by arranging multiple single-piece molds inside the annular outer mold, the multiple single-piece molds are connected end to end to form an annular inner mold. In this way, after the hydraulic lime mortar is applied to the inside of the annular inner mold to shape it, the annular outer mold can be removed first, and the single-piece molds can be removed one by one after the slurry is finally set. Since the contact area between the single-piece mold and the lime mortar is relatively much smaller than that of the traditional mold formed by two semicircular rings, the degree of fit is relatively much smaller. Therefore, when a single single-piece mold is separated, the shaped slurry layer will basically not be disturbed, and it is not easy for the mortar to stick to the mold or the slurry layer to be pulled when the mold is detached. Therefore, compared with the traditional technology, the utility model can achieve the goal of not disturbing the slurry layer during demoulding.

[0012] When the utility model is in use, one annular outer mold can be matched with a plurality of annular inner molds, so that the speed of applying mortar on a plurality of samples can be accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the annular inner mold, the demoulding lifting rod and the demoulding pressing plate of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the connection assembly of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1-Figure 3 A mold for shaping slurry material on the surface of a bonding strength test specimen comprises a first semicircular ring 1 and a second semicircular ring 2, the first semicircular ring 1 and the second semicircular ring 2 are connected end to end to form an annular outer mold, the first semicircular ring 1 and the second semicircular ring 2 are connected by a connecting component, and is characterized in that a plurality of single-piece flap molds 3 are arranged inside the annular outer mold, and the plurality of single-piece flap molds 3 are connected end to end to form an annular inner mold.

[0018] When in use, after the rock sample is prepared, the annular outer mold is first placed on the sample surface, and then the annular inner mold composed of multiple single-piece molds 3 is placed, and hydraulic lime mortar is applied to the annular inner mold. When the hydraulic lime mortar is initially set, the annular outer mold can be removed, and when the hydraulic lime mortar is finally set, the single-piece molds 3 are removed one by one. Three single-piece molds 3 are taken as an example. One annular outer mold can be equipped with multiple annular inner molds. When the hydraulic lime mortar on the previous sample is initially set, the removed annular outer mold is combined with another annular inner mold and the same operation is performed on the next rock sample.

[0019] The connection assembly includes one end of the first semicircular ring 1 and one end corresponding to the second semicircular ring 2 being hinged through a pin shaft 4, a first connecting plate 5 being arranged at the other end of the first semicircular ring 1, a second connecting plate 6 being arranged at one end of the second semicircular ring 2 corresponding to the first connecting plate 5, a locking bolt 7 being hinged on the first connecting plate 5 through a connecting shaft 10, a locking nut 8 being threadedly connected to the locking bolt 7, a clamping groove 9 in a "U"-shaped structure being provided on the second connecting plate 6, and the locking bolt 7 being located inside the clamping groove 9. The first semicircular ring 1 and the second semicircular ring 2 can be quickly opened and removed from the annular inner mold by the cooperation of the locking bolt 7 and the locking nut 8, and can also be convenient for the first semicircular ring 1 and the second semicircular ring 2 to be closed again into an annular outer mold.

[0020] It also includes a demoulding lifting rod 11. A lifting hole 12 is opened on one side of the single flap mold 3 close to the annular outer mold. The lifting hole 12 is a blind hole. When the single flap mold 3 is demoulded, the demoulding lifting rod 11 can be inserted into the lifting hole 12 to lift the single flap mold 3 upward to separate it from the shaped slurry.

[0021] It also includes a demoulding platen 13, the diameter of which matches the inner diameter of the annular inner mold. A handle 14 is provided on the demoulding platen 13. When the demoulding rod 11 is used to stir the single flap mold 3, the demoulding platen 13 can be used to gently press the slurry after final setting, which can further avoid disturbance of the slurry layer during demoulding.

[0022] The single flap mold 3 is made of polytetrafluoroethylene material, which does not adhere to hydraulic lime mortar and is conducive to demoulding.

[0023] The above are only preferred embodiments of the present invention.

Claims

1. A mold for shaping a slurry material on the surface of a bonding strength test specimen, comprising a first semicircular ring (1) and a second semicircular ring (2), wherein the first semicircular ring (1) and the second semicircular ring (2) are connected end to end to form an annular outer mold, and the first semicircular ring (1) and the second semicircular ring (2) are connected by a connecting component, characterized in that: A plurality of single-piece molds (3) are arranged inside the annular outer mold, and the plurality of single-piece molds (3) are connected end to end to form an annular inner mold.

2. The mold for shaping the slurry material on the surface of the bonding strength test specimen according to claim 1, characterized in that: The connection assembly comprises one end of a first semicircular ring (1) and an end corresponding to the second semicircular ring (2) which are hingedly connected via a pin shaft (4); a first connecting plate (5) is arranged at the other end of the first semicircular ring (1); a second connecting plate (6) is arranged at the end of the second semicircular ring (2) corresponding to the first connecting plate (5); a locking bolt (7) is hingedly connected to the first connecting plate (5) via a connecting shaft (10); a locking nut (8) is threadedly connected to the locking bolt (7); a U-shaped slot (9) is provided on the second connecting plate (6); and the locking bolt (7) is located inside the slot (9).

3. The mold for shaping the slurry material on the surface of the bonding strength test specimen according to claim 1, characterized in that: It also comprises a demoulding lever (11), and a lever hole (12) is provided on one side of the single-piece flap mould (3) close to the annular outer mould.

4. The mold for shaping the slurry material on the surface of the bonding strength test specimen according to claim 1, characterized in that: It also includes a demoulding plate (13), the diameter of which matches the inner diameter of the annular inner mold, and a handle (14) is provided on the demoulding plate (13).

5. The mold for shaping the slurry material on the surface of the bonding strength test specimen according to claim 1, characterized in that: The single flap mold (3) is made of polytetrafluoroethylene material.

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