Device for unconfined compression-resistant test mold

Abstract

The utility model provides a device for an unconfined compression-resistant test mold, and belongs to the field of geotechnical test equipment. The problems that an auxiliary loading device for manufacturing the unconfined compression-resistant test piece cannot be suitable for test molds of different sizes, and the material insertion efficiency is low are solved. According to the technical scheme, the pouring device comprises a pouring groove body of a hollow structure, one end of the pouring groove body is detachably connected with a guiding device of a hollow structure, the guiding device is of an integrated structure, and the tangent line of the inner surface of the pouring groove body intersects with the center line of the pouring groove body. The pouring groove body is connected with a fixing device through a plurality of connecting devices, a tamping device is arranged in the fixing device in a clearance fit mode, the tamping device is further in clearance fit with a guiding device, and the fixing device, the pouring groove body and the guiding device are coaxially arranged. The device is applied to soil tests.

Description

Technical Field

[0001] The utility model provides a device for an unconfined compression test mold, belonging to the technical field of geotechnical test equipment. Background Technique

[0002] The forming test before measuring the unconfined compressive strength of inorganic binder stabilized materials for the semi-rigid base of the road surface is a very basic step. However, when pouring the weighed mixture of inorganic binder stabilized materials into the test mold, due to the lack of a special auxiliary loading device, the mixture is very easy to scatter, and the mass of the mixture poured into the test mold becomes smaller, resulting in an insufficient thickness of the produced compaction specimen and an error in the test result. In addition, the traditional pouring method has cumbersome steps and there is a problem of low forming efficiency of the specimen.

[0003] The Chinese utility model patent (CN 215931451 U) proposes an auxiliary loading device for the production of unconfined compressive specimens. By coating a stain-resistant coating on the inner side walls of the buffer part and the guiding device, the wear of the inner side wall of the material receiving part by the specimen production material is avoided, which affects the quality of the specimen; a protective pad is arranged on the auxiliary loading device, and an upright plate is arranged on the outer edge of the protective pad. The upright plate is sleeved on the outer peripheral side of the limiting plate to avoid the top surface of the limiting plate and the mold of the unconfined compressive specimen from coming into contact and generating debris, which affects the accuracy of the quality and volume of the specimen.

[0004] However, the above technical solution cannot be applied to test molds of different sizes, and the ramming efficiency of the material is relatively low. Content of the Utility Model

[0005] In order to solve the technical problems that the auxiliary loading device for the production of unconfined compressive specimens cannot be applied to test molds of different sizes and the ramming efficiency of the material is relatively low, the utility model proposes a device for an unconfined compression test mold, aiming to improve the accuracy of the production of unconfined compressive specimens and enhance the efficiency of ramming the material by improving the hardware structure of the auxiliary loading device for the production of unconfined compressive specimens.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for an unconfined compression test mold, including a hollow pouring tank body, one end of the pouring tank body is detachably connected with a hollow guiding device, and the guiding device is an integral structure;

[0007] The tangent of the inner surface of the pouring tank body intersects with the center line of the pouring tank body;

[0008] The pouring tank body is connected with a fixing device through a plurality of connecting devices;

[0009] A ramming device is fitted in the fixing device with an interference fit;

[0010] The ramming device also has a clearance fit with the guiding device;

[0011] The fixing device, the tipping chute body and the guiding device are coaxially arranged.

[0012] Furthermore, the guiding device includes a first guiding part and a second guiding part; the first guiding part and the second guiding part are of an integral structure.

[0013] Furthermore, the first guiding part is of a frustum structure, the inclination of the side surface of the first guiding part is the same as that of the side surface of the tipping chute body, and the second guiding part is of a hollow cylindrical structure.

[0014] Furthermore, the guiding device is of a hollow cylindrical structure.

[0015] Furthermore, the tipping chute body is provided with flat mouth grooves, the guiding device is provided with threads, and the flat mouth grooves are adapted to the threads.

[0016] Furthermore, the tipping chute body is of a frustum structure.

[0017] Furthermore, the ramming device is of a cylindrical structure.

[0018] Furthermore, the connecting device is of a square structure.

[0019] Furthermore, the included angle between the connecting device and the horizontal plane is 45°.

[0020] Furthermore, three connecting devices are provided and are evenly spaced and fixed between the tipping chute body and the fixing device.

[0021] The beneficial effects of the present utility model compared with the prior art are as follows:

[0022] 1. The device of the present utility model is used for auxiliary loading of the unconfined compression test mold, which can avoid scattering and leakage of materials during the process of pouring materials into the test mold before the unconfined compressive strength test of the materials; it avoids the errors caused by the contact between the materials and the outside world during the process of loading the materials by the test personnel, and greatly improves the accuracy of specimen production;

[0023] 2. The tipping chute body and the guiding device of the present utility model are detachable. By replacing guiding devices of different models, it can be applied to test molds corresponding to coarse-grained materials, medium-grained materials and fine-grained materials, expanding the application scope of the device of the present utility model for the unconfined compression test mold, and enhancing the flexibility of application; it can be used for other applications separately according to needs, and it is more conducive to cleaning after disassembly;

[0024] 3. The ramming device of the present utility model can be placed in the fixing device, which can improve the efficiency of plastic film and make the test site cleaner. When the ramming device is taken out of the fixing device, it can also be used for other applications according to needs;

[0025] 4. The arrangement of the tipping trough body, guiding device and fixing device of the present utility model can improve the efficiency of material tipping and ramming, shorten the test time, and truly achieve twice the result with half the effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present utility model will be further described below in conjunction with the drawings:

[0027] Figure 1 is a schematic structural view of the present utility model;

[0028] Figure 2 is a schematic structural view of the guiding device of the present utility model;

[0029] Figure 3 is a schematic structural view of the test mold of the present utility model;

[0030] Figure 4 is a cross-section of the device for unconfined compression test mold of the present utility model cooperating with the test mold Figure 1 ;

[0031] Figure 5 is a cross-section of the device for unconfined compression test mold of the present utility model cooperating with the test mold Figure 2 ;

[0032] Figure 6 is a cross-sectional view of test molds of different specifications;

[0033] In the figure: 1 is the guiding device, 2 is the tipping trough body, 3 is the connecting device, 4 is the fixing device, 5 is the ramming device, 6 is the holding part, 7 is the test mold, 11 is the first guiding part, and 12 is the second guiding part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In the present utility model, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are usually in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the sake of easy understanding and description, "inner, outer" refer to the inner and outer of the contours of the respective components, but the above orientation words do not limit the present utility model.

[0035] Such as Figures 1 to 6As shown in the figure, the present utility model provides a device for an unconfined compression test mold, which includes a hollow tipping trough body 2. One end of the tipping trough body 2 is detachably connected to a hollow guiding device 1, and the guiding device 1 is an integral structure. The tangent of the inner surface of the tipping trough body 2 intersects with the center line of the tipping trough body 1. The tipping trough body 2 is connected to a fixing device 4 through a plurality of connecting devices 3. The connecting devices 3 are fixedly connected between the inner surface of the tipping trough body 2 and the outer surface of the fixing device 4. A ramming device 5 is in clearance fit within the fixing device 4, and the ramming device 5 is also in clearance fit with the guiding device 1. The fixing device 4, the tipping trough body 2, and the guiding device 1 are coaxially arranged, that is, the ramming device 5 sequentially penetrates through the fixing device 4 and the guiding device 1 from top to bottom. The horizontal cross-sectional area at any position of the tipping trough body 2 is larger than the horizontal cross-sectional area at any position of the guiding device 1.

[0036] Specifically, the tipping trough body 2 is a frustum structure, and the diameter of its upper base is larger than the diameter of its lower base. In this embodiment, the height of the entire tipping trough body 2 is 100 mm, and the diameter of the inner surface of the upper base of the tipping trough body 2 is 280 mm, which facilitates the material to be poured into the tipping trough body 2 from any direction around the tipping trough body 2, ensuring that the inclination angle of the tipping trough body 2 is large enough for the material to easily slide down to the guiding device 1 under the action of gravity. Those skilled in the art can also set the tipping trough body 2 as other structures such as a prism frustum, as long as the opening area of its upper end face is larger than the opening area of its lower end face to facilitate the pouring of the material.

[0037] A flat groove pattern is provided on the lower end face of the tipping trough body 2, and a thread is provided on the upper end face of the guiding device 1. The flat groove pattern and the thread cooperate with each other to fixedly connect the tipping trough body 2 and the guiding device 1. The device for the unconfined compression test mold of the present utility model can be applied to the test molds 7 corresponding to coarse-grained materials, medium-grained materials, and fine-grained materials by replacing the guiding device 1 with different models. The viscosity and particle size of the material need to enable the material to smoothly pass through the guiding device 1 to complete the test.

[0038] The guiding device 1 includes a first guiding part 11 and a second guiding part 12, and the first guiding part 11 and the second guiding part 12 are of an integral structure. Specifically, the first guiding part 11 is in the shape of a frustum of a cone, and the inclination and radian of the side surface of the first guiding part 11 are the same as those of the side surface of the tipping trough body 2 of the frustum structure; the second guiding part 12 is a hollow cylindrical structure, and after the guiding device 1 is fixedly connected to the tipping trough body 2, it is in the shape of a funnel. In this embodiment, the diameter of the inner surface of the upper part of the first guiding part 11 in contact with the tipping trough body 2 is 80 mm, the height of the first guiding part 11 is 20 mm, the diameter of the inner cross-sectional circle of the second guiding part 12 is 40 mm, and the height of the second guiding part 12 is 30 mm, which is applicable to the test mold 7 with a specification of a diameter of 50 mm. Those skilled in the art can also make adaptive adjustments to the structures of the first guiding part 11 and the second guiding part 12, as long as the first guiding part 11 can cooperate with the tipping trough body 2 to achieve fixed connection, and the tipping trough body 2, the guiding device 1 and the test mold 7 are adapted to pour materials into the test mold 7 for testing the unconfined compressive strength of inorganic binder stabilized materials to make specimens.

[0039] The guiding device 1 can also be set as a hollow cylindrical structure, and its upper end is fixedly connected to the tipping trough body 2 through the cooperation of the thread and the flat groove pattern at the lower end of the tipping trough body 2. In this embodiment, the inner surface diameter of the guiding device 1 of the cylindrical structure is 80 mm, and the height is 40 mm, which is applicable to the test mold 7 with an inner surface diameter of 100 mm and an inner surface diameter of 150 mm.

[0040] Regarding the specific dimensions of the guiding device 1, in this embodiment, they are set according to the "Test Regulations for Inorganic Binder Stabilized Materials in Highway Engineering" JTG 3441-2024 and the "Method for Forming Specimens of Inorganic Binder Stabilized Materials (Cylindrical)". Those skilled in the art can make adaptive adjustments according to the specifications they rely on or the actual situation. On the basis that the lower end of the guiding device 1 can be inserted into the mold, the passing rate of materials is guaranteed to the greatest extent.

[0041] The connecting device 3 is of a square structure, and the included angle between the connecting device 3 and the horizontal plane is 45°. The size of the included angle can also be adjusted adaptively according to the specific situation, as long as it can stably support the fixing device. One end of the connecting device 3 located on the fixing device 4 is higher than one end of the connecting device 3 located on the tipping trough body 2 in the vertical direction. In this embodiment, the distance from one end of the connecting device 3 located on the tipping trough body 2 to the upper bottom of the tipping trough body in the vertical direction is 50 mm. There are three connecting devices 3, and the width is 5 mm, leaving enough space for the material to slide down. The connecting device 3 is evenly and fixedly connected between the fixing device 4 and the tipping trough body 2, and the tipping trough body 2, the connecting device 3 and the fixing device 4 are fixed as a whole.

[0042] The fixing device 4 is specifically a collar. In this embodiment, the inner diameter of the collar is 40 mm, the ring thickness is 2 mm, and the height is 10 mm. Those skilled in the art can also make adaptive adjustments to the structure of the fixing device 4 as long as it can assist the ramming device 5 to ram the material firmly.

[0043] One end of the ramming device 5 away from the guiding device 1 is also fixedly connected with a holding part 6 to facilitate the operator to operate the ramming device 5. The ramming device 5 and the holding part 6 are specifically cylinders. The diameter of the holding part 6 is greater than that of the ramming device 5. In this embodiment, the diameter of the ramming device 5 is ≤ 40 mm and the height is about 280 mm. The ramming device 5 can freely move vertically to the bottom of the guiding device 1 and can be freely taken out from the top of the fixing device 4. The diameter and height of the ramming device 5 can be adjusted adaptively according to the actual situation.

[0044] In this embodiment, the wall thickness of the guiding device 1 and the wall thickness of the tipping chute 2 are both 2 mm.

[0045] When using the device for the unconfined compression test mold of the present utility model, after fixedly connecting the tipping chute 2 of the present utility model with the guiding device 1, place one end of the guiding device 1 on the test mold 7. At this time, the upper end surface of the test mold 7 supports the first guiding part 11 of the guiding device 1 or the tipping chute 2. After pouring the material along the tipping chute 2, it slides to the guiding device 1 through the gaps between the two connecting devices 3, and then the material enters the test mold 7. During the whole process, the ramming device 5 is used to ram the material firmly according to the actual situation. After the test, disassemble and clean the guiding device 1, the tipping chute 2, the ramming device, etc., and then they can be assembled and placed, saving storage space.

[0046] Regarding the specific structure of the present utility model, it should be noted that the connection relationships between the various component modules adopted by the present utility model are definite and achievable. Except for the special descriptions in the embodiments, the specific connection relationships can bring corresponding technical effects, and on the premise of not relying on the execution of corresponding software programs, solve the technical problems proposed by the present utility model. The models of the components, modules, and specific components, the connection methods between each other, and the conventional usage methods and predictable technical effects brought by the above technical features, except for the specific descriptions, all belong to the patent, journal papers, technical manuals, technical dictionaries, and textbooks that those skilled in the art can obtain before the filing date, or belong to the prior art such as the conventional techniques and common knowledge in the art, and do not need to be elaborated. This makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain the corresponding physical product according to this technical means.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for an unconfined compression test mold, characterized in that: It includes a tilting trough body (2) with a hollow structure. One end of the tilting trough body (2) is detachably connected to a guiding device (1) with a hollow structure, and the guiding device (1) is an integral structure. The tangent of the inner surface of the tilting trough body (2) intersects the center line of the tilting trough body (2). The tilting trough body (2) is connected to a fixing device (4) through a plurality of connecting devices (3). A ramming device (5) is arranged in the fixing device (4) with a clearance fit. The ramming device (5) also has a clearance fit with the guiding device (1). The fixing device (4), the tilting trough body (2) and the guiding device (1) are coaxially arranged.

2. The device for an unconfined compression test mold according to claim 1, characterized in that: The guiding device (1) includes a first guiding part (11) and a second guiding part (12); the first guiding part (11) and the second guiding part (12) are an integral structure.

3. The device for an unconfined compression test mold according to claim 2, characterized in that: The first guiding part (11) is a frustum structure, and the inclination of the side surface of the first guiding part (11) is the same as that of the side surface of the tilting trough body (2). The second guiding part (12) is a hollow cylindrical structure.

4. A device for an unconfined compression test mold according to claim 1, characterized in that: The guiding device (1) is a hollow cylinder structure.

5. A device for an unconfined compression test mold according to claim 1, characterized in that: The tilting trough body (2) is provided with flat mouth grooves, and the guiding device (1) is provided with threads, and the flat mouth grooves are adapted to the threads.

6. The device for an unconfined compression test mold according to claim 1, characterized in that: The tilting trough body (2) is a frustum structure.

7. A device for an unconfined compression test mold according to claim 1, characterized in that: The ramming device (5) is a cylinder structure.

8. A device for an unconfined compression test mold according to claim 1, characterized in that: The connecting device (3) is a square structure.

9. The device for an unconfined compression test mold according to claim 1, characterized in that: The included angle between the connecting device (3) and the horizontal plane is 45°.

10. The device for an unconfined compression test mold according to claim 1, characterized in that: There are three connecting devices (3), which are evenly spaced and fixed between the tilting trough body (2) and the fixing device (4).

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