Reinforced concrete test beam mold

Abstract

The reinforced concrete test beam mold comprises a mold box body and two baffles, and the mold box body is provided with a cavity with an opening in the upper end; a cavity is formed in the mold box body, the two baffles are arranged in the cavity in a spaced mode, the two baffles and the mold box body jointly define a mold cavity, and at least one baffle is movably arranged in the direction close to and away from the other baffle so that the size of the mold cavity can be adjusted. Reinforced concrete test beams of different sizes can be poured, a mold does not need to be prepared again, operation is easy, the test piece manufacturing cost and time are reduced, the problem that demolding is difficult due to the fact that a mold of a fixed size is coated with too little or non-uniform demolding agents can be effectively solved, the manufacturing efficiency of the test beams is improved, and the production cost is reduced. And the influence of a plurality of human factors on the manufacturing efficiency in the test beam manufacturing process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of concrete casting moulds, in particular to a reinforced concrete test beam mould. Background Art

[0002] Civil engineering structure test is an important basic course for students majoring in civil engineering. It is an important course for cultivating students' experimental skills, scientific research capabilities and engineering practice capabilities. Its main task is to apply scientific organizational procedures to the test objects, use testing instruments and equipment as tools, and various tests as means. Under the action of load or other factors, by measuring various parameters related to structural performance, the working performance of the structure can be determined from the strength, stiffness, and crack resistance as well as the actual failure form of the structure, the bearing capacity of the structure can be estimated, the degree of compliance of the structure with the use requirements can be determined, or the construction quality of the structure can be judged according to relevant standards and specifications, and it can be used to test and develop the calculation theory of the structure. Reinforced concrete beams are the main test objects of civil engineering structure tests, and each school needs to consume a large number of test beams every academic year.

[0003] Patent CN104568532A discloses a mold for preparing specimens for concrete tensile testing, including a bottom plate, wherein the bottom plate is a rectangular plate body, side plates are provided on both sides of the bottom plate, the middle part of the side plate is recessed inward, and the cross-section of the recess is an isosceles trapezoidal structure without a lower bottom, an isosceles trapezoidal plate is provided at the bottom end of the recess of the side plate, the shape of the trapezoidal plate matches the shape of the recess of the side plate, the side plate and the isosceles trapezoidal plate are fixedly connected by a plurality of triangular plates, wherein the side plates, the isosceles trapezoidal plates, and the triangular plates are perpendicular to each other; the mold is surrounded by the bottom plate, the side plates on both sides and the baffles at both ends to form a wing-shaped cavity that is wide at both ends and narrow and long in the middle.

[0004] However, the above-mentioned existing mold specifications and sizes are fixed, and only test pieces of the same model and size can be cast. When concrete test pieces of other sizes need to be cast, new molds need to be prepared, which is cumbersome to manufacture and costly. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a reinforced concrete test beam mold to solve the technical problems that the mold specifications and sizes in the prior art are fixed, and only test pieces of the same model and size can be cast. When concrete test pieces of other sizes need to be cast, new molds need to be prepared, which results in cumbersome manufacturing and high costs.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a reinforced concrete test beam mold, comprising: A mold box having a cavity with an open upper end; and Two baffles are arranged in the cavity at intervals, and the two baffles and the mold box together enclose a mold cavity, wherein at least one of the baffles is movably arranged along a direction approaching and moving away from the other baffle, so that the size of the mold cavity is adjustable.

[0007] In some embodiments, both baffles are movably arranged.

[0008] In some embodiments, the reinforced concrete test beam mold further includes a locking member, which connects the mold box and the movably arranged baffle, so that when the baffle moves to a set position, the locking member is used to limit the movement of the baffle.

[0009] In some embodiments, a through hole is provided on the side of the mold box corresponding to the movable baffle; The locking member includes a first screw and a first locking nut. The first screw is inserted into the through hole and one end of the first screw is connected to the baffle. The first locking nut is located in the cavity and cooperates with the first screw thread so that when the baffle moves to a set position, the first locking nut abuts against the side wall of the cavity to limit the movement of the baffle in a direction away from the other baffle.

[0010] In some embodiments, the locking member also includes a second locking nut, which is located on the outside of the mold box and cooperates with the first screw thread so that when the baffle moves to a set position, the second locking nut abuts against the outside of the mold box to limit the movement of the baffle toward the direction close to the other baffle.

[0011] In some embodiments, the first screw and the baffle are detachably connected.

[0012] In some embodiments, a threaded hole is provided on the side of the mold box corresponding to the movable baffle; The locking member comprises a second screw rod, one end of which is rotatably mounted on the baffle along its axial direction, and the second screw rod is threadably matched with the threaded hole.

[0013] In some embodiments, the height of the baffle is greater than the depth of the cavity.

[0014] In some embodiments, the difference between the width of the cavity and the width of the baffle is in the range of 1 mm to 2 mm.

[0015] In some embodiments, the mold box and the baffle are both made of stainless steel.

[0016] Compared with the prior art, in the reinforced concrete test beam mold provided by the present invention, the two baffles are arranged in the cavity at intervals, so as to define the mold cavity, and at least one baffle can be movably arranged, so that the distance between the two baffles can be adjusted, thereby achieving the purpose of adjusting the length of the mold cavity, so that reinforced concrete test beams of different sizes can be cast, and there is no need to re-prepare the mold, the operation is simple, and the cost and time of test piece production are reduced. Moreover, the baffle can be taken out after the concrete of the test beam is cast and the initial setting, that is, after the test beam is initially hardened, so as to release part of the space for demoulding the test beam, which effectively overcomes the demoulding difficulty caused by too little or uneven application of the release agent for the fixed-size mold, and also avoids the complicated assembly process of the traditional assembled mold, thereby improving the production efficiency of the test beam and reducing the influence of several human factors on the production efficiency during the test beam production process.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail as follows with reference to the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a reinforced concrete test beam mold provided by the present invention; Figure 2 yes Figure 1 Partial schematic diagram of the reinforced concrete test beam mold; Figure 3 yes Figure 1 Front view of the reinforced concrete test beam mould.

[0019] Description of reference numerals: 1-mold box, 11-mold cavity, 2-baffle, 3-locking piece, 31-first screw, 32-first locking nut, 33-second locking nut. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution 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. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In order to solve the technical problems that the specifications and sizes of molds in the prior art are fixed and only test pieces of the same model and size can be cast. When concrete test pieces of other sizes need to be cast, new molds need to be prepared again, which is cumbersome and costly to manufacture. The present invention provides a reinforced concrete test beam mold, which can cast reinforced concrete test beams of different sizes without the need to prepare molds again, is simple to operate, and reduces the cost and time of test piece production. The baffle can be taken out after the concrete of the test beam is cast and the initial setting, that is, after the test beam is initially hardened, to release some space for demoulding the test beam, which effectively overcomes the demoulding difficulty caused by too little or uneven application of release agent for fixed-size molds, avoids the complicated assembly process of traditional assembled molds, improves the production efficiency of the test beam, and reduces the influence of several human factors on the production efficiency during the test beam production process.

[0022] See also Figure 1 , Figure 1 It is a schematic structural diagram of a reinforced concrete test beam mold in one embodiment of the present invention.

[0023] The present invention provides a reinforced concrete test beam mold, comprising a mold box 1 and two baffles 2, wherein the mold box 1 has a cavity with an open upper end; the two baffles 2 are arranged in the cavity at intervals, and the two baffles 2 and the mold box 1 together enclose a mold cavity 11, wherein at least one of the baffles 2 is movably arranged in a direction close to and away from the other baffle 2, so that the size of the mold cavity 11 is adjustable.

[0024] In this embodiment, the two baffles 2 are arranged at intervals in the cavity, thereby defining the mold cavity 11, and at least one baffle 2 is movably arranged, so that the distance between the two baffles 2 can be adjusted, thereby achieving the purpose of adjusting the length of the mold cavity 11, so that reinforced concrete test beams of different sizes can be cast without re-preparing the mold, the operation is simple, and the cost and time of test piece production are reduced. Moreover, the baffle 2 can be taken out after the concrete of the test beam is cast and the concrete is initially set, that is, after the test beam is initially hardened, so as to release part of the space for demoulding the test beam, which effectively overcomes the demoulding difficulty caused by too little or uneven application of the release agent for a fixed-size mold, improves the production efficiency of the test beam, and reduces the influence of several human factors on the production efficiency during the test beam production process.

[0025] In this embodiment, the mold box 1 is in a rectangular shape as a whole, the first direction is its length direction, and the two baffles 2 are spaced apart along the first direction. By adjusting the positions of the baffles 2, reinforced concrete test beams of different lengths can be cast.

[0026] In another embodiment, the first direction is its width direction, and the two baffles 2 are spaced apart along the first direction. By adjusting the positions of the baffles 2, reinforced concrete test beams of different widths can be cast.

[0027] The two baffles 2 may be one of the baffles 2 movably arranged, or both of the baffles 2 may be movably arranged, which is not limited here. In the present embodiment, both of the baffles 2 are movably arranged. The two baffles 2 are movably arranged. After the concrete is finally set, the two baffles 2 are moved in a direction away from the mold cavity 11, and the baffles 2 are disengaged from the reinforced concrete test beam, so that there is a certain space between the baffles 2 and the reinforced concrete test beam, thereby releasing the pressure between the reinforced concrete test beam and the mold, so that the reinforced concrete test beam can slide freely in the mold cavity 11, so as to reduce the difficulty of demoulding.

[0028] In this embodiment, in order to prevent the baffle 2 from accidentally moving during the pouring process, the reinforced concrete test beam mold further includes a locking member 3, which connects the mold box 1 and the movable baffle 2, so that when the baffle 2 moves to a set position, the locking member 3 is used to limit the movement of the baffle 2. By arranging the locking member 3 between the baffle 2 and the mold box 1, the baffle 2 is fixed, thereby preventing the baffle 2 from accidentally moving during the pouring process.

[0029] Further, based on the embodiment in which both baffles 2 can be movably arranged, two locking members 3 are also provided, and the two locking members 3 correspond to the two baffles 2 one by one, and each locking member 3 is used to fix the corresponding baffle 2.

[0030] The locking member 3 has various forms.

[0031] In this embodiment, a through hole is provided on the side of the mold box 1 corresponding to the movably arranged baffle 2; the locking member 3 includes a first screw 31 and a first locking nut 32, the first screw 31 is passed through the through hole and one end of which is connected to the baffle 2, the first locking nut 32 is located in the cavity and threadedly cooperates with the first screw 31, so that when the baffle 2 moves to a set position, the first locking nut 32 abuts against the side wall of the cavity to limit the movement of the baffle 2 in a direction away from the other baffle 2.

[0032] Specifically, the diameter of the through hole is larger than the diameter of the first screw 31 and smaller than the size of the first locking nut 32. The first screw 31 is inserted into the through hole, and then the first locking nut 32 is screwed onto the first screw 31, and then one end of the first screw 31 is connected to the baffle 2. At this time, the first locking thread is located in the cavity, and the first screw 31 can move synchronously with the baffle 2. When the baffle 2 moves to the set position, the first locking nut 32 is rotated so that the first locking nut 32 abuts against the side wall of the cavity, thereby limiting the first screw 31 and the baffle 2 and preventing the baffle 2 from moving away from the mold cavity 11.

[0033] There is no limitation on the specific connection method between the first screw 31 and the baffle 2 , which may be a welding connection or an integral molding. In the present embodiment, the first screw 31 and the baffle 2 are detachably connected.

[0034] Specifically, in order to facilitate manufacturing and assembly, the first screw rod 31 and the baffle plate 2 are configured to be detachably connected.

[0035] Furthermore, a mounting plate is provided at one end of the first screw rod 31, and the diameter of the mounting plate is larger than the diameter of the first screw rod 31. The mounting plate is provided with a plurality of through holes, and the plurality of through holes are arranged at intervals along the circumference of the first screw rod 31. The baffle plate 2 is provided with a plurality of threaded holes on the side facing the first screw rod 31, and the plurality of threaded holes correspond one-to-one to the plurality of through holes. The reinforced concrete test beam mold also includes a plurality of connecting screws, and the number of the connecting screws is consistent with the number of the through holes. The connecting screws pass through the through holes and are threadedly connected to the baffle plate 2 to install the mounting plate on the baffle plate 2.

[0036] In another embodiment, a T-shaped slot with an opening facing the side of the baffle 2 facing the first screw rod 31 is provided, and a plug-in portion adapted to the T-shaped slot is provided at one end of the first screw rod 31. The plug-in portion is plug-connected to the T-shaped slot, thereby realizing a detachable connection between the first screw rod 31 and the baffle 2, and the T-shaped slot opening faces downward. When disassembling, the baffle 2 can be disassembled by simply pulling it upwards. The operation is simple and easy to use.

[0037] Furthermore, the locking member 3 also includes a second locking nut 33, which is located on the outside of the mold box 1 and is threadedly engaged with the first screw 31, so that when the baffle 2 moves to a set position, the second locking nut 33 abuts against the outside of the mold box 1 to limit the movement of the baffle 2 toward the direction close to another baffle 2.

[0038] Specifically, since the first locking nut 32 can only limit the movement of the baffle 2 in the direction away from the mold cavity 11 but cannot limit the movement of the baffle 2 in the direction close to the mold cavity 11, a second locking nut 33 is also provided on the outside of the mold box 1. The second locking nut 33 is screwed onto the first screw rod 31 and abuts against the outer wall of the mold box 1, thereby limiting the movement of the baffle 2 in the direction close to the mold cavity 11. By using the first locking nut 32 and the second locking nut 33 in coordination, the baffle 2 can be completely fixed to prevent accidental movement.

[0039] Furthermore, in order to increase the contact area between the first locking nut 32 and the side wall of the cavity and the contact area between the second locking nut 33 and the outer wall of the mold box 1, a gasket is provided between the first locking nut 32 and the side wall of the cavity, and a gasket is provided between the second locking nut 33 and the outer wall of the mold box 1.

[0040] In another embodiment, a threaded hole is provided on the side of the mold box 1 corresponding to the movably arranged baffle 2; the locking member 3 includes a second screw, one end of which is rotatably installed on the baffle 2 along its axial direction, and the second screw is threadedly matched with the threaded hole.

[0041] Specifically, a threaded hole is opened on the side of the mold box 1, the second screw is threadedly matched with the side wall of the mold box 1, and one end of the second screw is rotatably installed on the baffle 2, so that the rotation of the second screw can drive the baffle 2 to move along the first direction, and the threaded match has a certain self-locking function, thereby limiting the movement of the baffle 2.

[0042] Furthermore, the locking member 3 also includes a hand wheel, and the hand wheel is installed at the other end of the second screw rod. Such an arrangement makes it convenient for an operator to rotate the second screw rod.

[0043] In another embodiment, the locking member 3 includes one of a pneumatic cylinder, a hydraulic cylinder and an electric cylinder, which can both drive the baffle 2 to move and fix the baffle 2 after the baffle 2 moves to a set position.

[0044] In this embodiment, the height of the baffle 2 is greater than the depth of the cavity.

[0045] Specifically, the height of the baffle 2 is about 1 cm greater than the depth of the cavity, so that the baffle 2 can extend out of the cavity. This arrangement can prevent the concrete from overflowing or splashing to areas of the cavity other than the mold cavity 11 during pouring, causing difficulty in sliding the baffle 2. On the other hand, when demolding becomes difficult, the protruding part of the baffle 2 can be knocked to assist in demolding.

[0046] In this embodiment, the difference between the width of the cavity and the width of the baffle 2 is in the range of 1 mm to 2 mm.

[0047] Specifically, in order to facilitate sliding of the baffle plate 2, the width of the baffle plate 2 is slightly smaller than the width of the cavity, that is, there is a gap of 1 mm-2 mm between the baffle plate 2 and the side wall of the cavity.

[0048] In this embodiment, the mold box 1 and the baffle 2 are both made of stainless steel.

[0049] In order to better understand the present invention, the following Figures 1 to 3 The technical solution of the present invention is described in detail: First, determine the required cross-sectional dimensions of the reinforced concrete test beam, including the length, width, and height of the test beam, and then determine the dimensions of the mold box 1, wherein the width and height of the inner diameter of the mold box 1 are consistent with the test beam, the inner diameter length of the mold box 1 is greater than the length of the test beam, and the baffle 2 can slide outside the test beam manufacturing area in the cavity; adjust the two baffles 2 so that the distance between the two baffles 2 is the same as the length of the test beam, rotate the first locking nut 32 and the second locking nut 33 so that the first locking nut 32 abuts against the side wall of the cavity, and the second locking nut 33 abuts against the mold. The outer wall of the mold box 1 is abutted to fix the first screw 31 and the baffle 2; there is no need to apply a release agent, put the test beam steel frame into the mold cavity 11, fix the steel frame and pour concrete, after the concrete is finally set, the test beam can be demoulded after the concrete reaches a certain strength, and the demoulding process is to first loosen the first locking nut 32 and the second locking nut 33 to separate the baffle 2 from the concrete, and vacate a certain space between the concrete and the baffle 2 to release the pressure between the concrete beam and the mold, so that the test beam can slide freely in the mold box 1, reduce the difficulty of demoulding, and directly pour out the test beam.

[0050] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A reinforced concrete test beam mold, characterized in that: It includes: A mold box body, wherein the mold box body has a cavity with an open upper end; And two baffles, the two baffles are spaced apart in the cavity, and the two baffles and the mold box together enclose a mold cavity, wherein at least one of the baffles is movably arranged along a direction approaching and moving away from the other baffle, so that the size of the mold cavity is adjustable.

2. The reinforced concrete test beam mold according to claim 1, characterized in that: The two baffles are both movably arranged.

3. The reinforced concrete test beam mold according to claim 1, characterized in that: The reinforced concrete test beam mold also includes a locking member, which connects the mold box and the movably arranged baffle, so that when the baffle moves to a set position, the locking member is used to limit the movement of the baffle.

4. The reinforced concrete test beam mold according to claim 3, characterized in that: The mold box body is provided with a through hole on the side corresponding to the movable baffle; The locking member includes a first screw and a first locking nut. The first screw is inserted into the through hole and one end of the first screw is connected to the baffle. The first locking nut is located in the cavity and cooperates with the first screw thread so that when the baffle moves to a set position, the first locking nut abuts against the side wall of the cavity to limit the movement of the baffle in a direction away from the other baffle.

5. The reinforced concrete test beam mold according to claim 4, characterized in that: The locking member also includes a second locking nut, which is located on the outside of the mold box and cooperates with the first screw thread so that when the baffle moves to a set position, the second locking nut abuts against the outside of the mold box to limit the movement of the baffle toward the direction approaching the other baffle.

6. The reinforced concrete test beam mold according to claim 4, characterized in that: The first screw rod and the baffle are detachably connected.

7. The reinforced concrete test beam mold according to claim 3, characterized in that: The mold box body is provided with a threaded hole on the side corresponding to the movable baffle; The locking member comprises a second screw rod, one end of which is rotatably mounted on the baffle along its axial direction, and the second screw rod is threadably matched with the threaded hole.

8. The reinforced concrete test beam mold according to claim 1, characterized in that: The height of the baffle is greater than the depth of the cavity.

9. The reinforced concrete test beam mold according to claim 1, characterized in that: The difference between the width of the cavity and the width of the baffle is in the range of 1 mm to 2 mm.

10. The reinforced concrete test beam mold according to claim 1, characterized in that: The mold box and the baffle are both made of stainless steel.

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