Method for replacing core box for soft and fragile core

Abstract

The present invention provides a method for replacing a core box for a soft and fragile core, and relates to the technical field of geological exploration. A box body extension piece at the opening edge of the core transfer box is aligned downward with the inner wall of the core cell of the core box until the bottom of the core transfer box is flush with the top height line of the core cell. The box body extension piece of the core transfer box is tightly attached to the cell bottom of the core cell and half-encloses the soft and fragile core. A fixing rod mechanism is then added between the core transfer box and the core box to form an assembly structure. The assembly structure is fixed to a turning table mechanism. The turning table mechanism can only perform two-speed turning, turning 180 degrees, to replace the old core box with a new one. The entire process is not affected by human factors, thereby improving the transfer efficiency of the soft and fragile core and reducing the need for multiple manual movements of the soft and fragile core. Compared with the original soft and fragile core before replacement, although the core box has been replaced, the original structure, construction, and sedimentation sequence of the core remain unchanged.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, and in particular to a mechanized method for replacing a core box of a soft and fragile core. Background Art

[0002] Cores are precious solid or semi-solid rocks obtained underground through drilling. They contain rich geological information. The slight changes in the color, structure, texture and sedimentation sequence of each centimeter of core represent different geological historical events that occurred over tens of thousands to millions of years. In addition, drilling underground cores requires millions to tens of millions of yuan to obtain them from underground, so core resources are very precious.

[0003] After cores are removed from the ground, some cores (such as shale and semi-solid soil) are susceptible to fragmentation and disintegration due to differences in pressure, temperature, and humidity below ground compared to the surface, as well as surface influences such as climate and human activity. This can lead to the cores breaking and disintegrating into soft, lumpy, or powdery forms. Cores are typically stored in plastic or wooden core boxes. Due to factors such as rain, sunlight, temperature, and human handling, many core boxes can break, leaking or scattering cores, and even becoming incapable of holding cores (especially for soft and fragile cores). This necessitates timely replacement of the core box. However, the size and specifications of the original core box before replacement and the new one after removal often differ, making it extremely difficult to protect and preserve the soft and fragile cores intact in situ. Core box replacement is essential for core preparation, especially for broken core boxes. Prompt replacement is crucial to preserve the precious cores. Therefore, completely preserving the precious underground information in the core is a very important part of core protection and is also a focus of geological researchers when using cores.

[0004] Currently, the transfer of soft and fragile cores and the replacement of core boxes are mainly accomplished by manual reversal of a handheld shovel. When using a shovel to transfer soft and fragile cores, multiple transfers are required, and the speed is slow (two people per group, 4-5 minutes / meter). In addition, during the manual operation, there are significant differences in human factors such as the strength of the shovel, the work process, and the use of tools. As a result, the use of the shovel to rub the core will cause irreversible damage to the original shape of the core, including: (1) making the relatively fragmented or soft but retaining the original cylindrical core even more fragmented; (2) causing more serious damage to the macro (meso) structure and structural phenomena (morphology) of the original stratum of the core; (3) shortening or lengthening the original length of the core; (4) causing serious misalignment and change in the order of depth from the center to the outer layer, top and bottom of the cylindrical core. The core moved by the shovel has irreversible consequences for the subsequent observation of geological phenomena in the core, the accuracy of experimental testing and scientific research, and seriously affects the results of geological science research. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a mechanized method for replacing core boxes for soft and fragile cores, so as to solve the technical problems in the prior art of manually transferring cores using auxiliary tools such as shovels, which have the disadvantages of slow transfer speed and the risk of destroying the original shape of the cores.

[0006] In order to achieve the above object, the present invention provides a method for replacing a core box of a soft and fragile core, comprising the following steps:

[0007] S1: Place the core transfer box upside down in each core compartment of a core box filled with soft and fragile cores, with the box body extension piece at the opening edge of the core transfer box facing downward and aligned with the inner wall of the core compartment of the core box, until the box bottom of the core transfer box is flush with the top height line of the core compartment, and the box body extension piece of the core transfer box is in close contact with the cell bottom of the core compartment and half-covers the soft and fragile cores;

[0008] S2: A fixing rod mechanism is installed between the core transfer box and the core box, wherein a first fixing cross bar of the fixing rod mechanism is installed on the core transfer box, and a second fixing cross bar of the fixing rod mechanism is installed on the core box. A connecting assembly connects the first fixing cross bar and the second fixing cross bar, so that the core transfer box and the core box form an assembled structure;

[0009] S3: Fix the assembly structure on the turning table mechanism. The turning table mechanism can only turn in the second gear, turning 180 degrees, and transfer all the soft and fragile cores in situ into the core transfer box;

[0010] S4: The new core box is placed upside down on the transfer box until the bottom of the core transfer box is flush with the top height line of the core grid of the new core box, and the assembly structure is formed again according to step S2;

[0011] S5: The assembly structure containing the inverted new core box is turned 180 degrees by the turning table mechanism to complete the replacement of the new core box.

[0012] According to an optional embodiment, the box extension piece in step S1 enters the core grid by relying on the inward gravitational force, and automatically contracts inward after entering the core grid.

[0013] According to an optional embodiment, the box extension piece in step S1 includes a lower vertical section and an upper concave arc section, and the upper concave arc section is bent inward and is used to embrace the columnar core in the core grid during the insertion process.

[0014] According to an optional embodiment, both ends of the first fixed cross bar of the fixed rod mechanism in step S2 are respectively installed in the placement cavity of the support mechanism of the core transfer box.

[0015] According to an optional embodiment, the second fixing cross bar of the fixing rod mechanism in step S2 is placed on a side of the core box away from the core transfer box.

[0016] According to an optional embodiment, the connecting component in step S2 is a connecting screw and a connecting nut.

[0017] According to an optional embodiment, the connecting component in step S2 is a connecting chain.

[0018] According to an optional embodiment, step S3 specifically includes fixing the assembly structure on the turning table mechanism, holding the handwheel of the turning table mechanism and rotating it, so that the core transfer box, the core box and the operating table of the turning table mechanism are synchronously turned 180°.

[0019] The method for replacing a core box for a soft and fragile core provided by the present invention has the following technical effects:

[0020] This method of replacing the core box adopts a mode of replacing the soft and fragile core as a whole, which reflects a one-to-one correspondence between the soft and fragile core in the original core box and the soft and fragile core after replacing the new core box. During the core box replacement process, the box body extension piece at the opening edge of the core transfer box is downwardly aligned with the inner wall of the core grid of the core box until the box bottom of the core transfer box is flush with the top height line of the core grid. The box body extension piece of the core transfer box is tightly attached to the grid bottom of the core grid and half of the soft and fragile core is wrapped. Then, a fixing rod mechanism is installed between the core transfer box and the core box to form an assembly structure. The assembly structure is fixed on the turning table mechanism and turned 180 degrees to replace the core box in step S1 with a new core box. The whole process is not affected by human factors, which improves the efficiency of transferring soft and fragile cores and reduces the process of multiple manual movements of soft and fragile cores. Compared with the original soft and fragile cores before replacement, although the core box has been replaced, the original structure, construction and sedimentation sequence of the core have not changed, thereby providing a fast and mechanized method for transferring soft and fragile cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a core transfer box according to an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 It is a structural schematic diagram of a core preparation device according to an embodiment of the present invention;

[0025] Figure 4 It is a structural diagram of the fixing rod mechanism of the present invention clamping and fixing the core transfer box and inserting the core box;

[0026] Figure 5 2. It is a schematic diagram of a state in which a core transfer box of the present invention is inserted into a core box and fixed by a fixing rod mechanism of one embodiment;

[0027] Figure 6 2. It is a schematic diagram of a state in which the core transfer box of the present invention is inserted into a core box and fixed by a fixing rod mechanism of another embodiment;

[0028] Figure 7 It is a structural schematic diagram of the turning table mechanism of the present invention;

[0029] Figure 8 It is a flow chart of replacing the core transfer box of the present invention.

[0030] in, Figures 1-8 :

[0031] 1. Core transfer box; 11. Support mechanism; 111. Support frame; 112. Fixed support plate; 113. Movable support plate; 114. Elastic buffer; 115. Placement cavity; 12. Box body; 121. Box body extension piece; 1211. Upper concave arc section; 1212. Lower vertical section; 1213. Vertical extension piece; 122. Gap; 13. Accommodation cavity; 2. Core box; 21. Opening; 2', new core box; 3. Fixed rod mechanism; 31. First fixed cross bar; 32. Second fixed cross bar; 33. Connecting assembly; 4. Turning table mechanism; 41. Stand; 42. Operating table; 421. Hand wheel; 422. Connecting hole; 43. Fixed assembly. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] The present invention provides a core transfer box 1, such as Figure 1 As shown, the core transfer box 1 includes a support mechanism 11 and a box body 12 fixedly arranged on the support mechanism 11.

[0035] The box body 12 is provided with a receiving cavity 13 for receiving the core inside, and the top side of the box body 12 is provided with an opening communicating with the receiving cavity 13 .

[0036] The top side of the box body 12 is located at the edge of the opening and extends upward to form a box body extension piece 121 . A gap 122 is provided between two adjacent box body extension pieces 121 .

[0037] Combine Figure 4 As shown, when replacing the core box 2, the core transfer box 1 is inverted, the box extension piece 121 is facing downward, and aligned with the core box 2. The core transfer box 1 is then inserted into the core box 2. During the insertion process, the core in the core box 2 enters the accommodating cavity through the opening. The core transfer box 1 and the core box 2 are then simultaneously flipped over to complete the transfer of the core from the core box 2 to the core transfer box 1, thus completing the replacement of the core box 2. During the aforementioned insertion process, the box extension piece 121 contacts the core. Due to the setting of the gap 122, the box extension piece 121 undergoes adaptive bending, thereby significantly reducing damage to the core during the transfer process, making it suitable for the transfer of soft and fragile cores.

[0038] The present invention uses the core transfer box 1 to facilitate the transfer of soft and fragile cores, and the core box 2 is easy to replace. In addition, the core will not be damaged during the transfer process.

[0039] As an optional embodiment, Figure 2 As shown, the box extension piece 121 corresponding to the long side of the opening includes a lower vertical section 1212 and an upper concave arc section 1211. The upper concave arc section 1211 is located on the upper side of the lower vertical section 1212 and is integrally arranged with the lower vertical section 1212.

[0040] The upper concave arc segment 1211 is bent inward.

[0041] The lower vertical section 1212 is used to increase the volume of the accommodating cavity 13 , and the inwardly curved upper concave arc section 1211 facilitates embracing the columnar core in the core box 2 during insertion.

[0042] As an optional embodiment, Figure 2 As shown, the box extension piece 121 corresponding to the short side of the opening is set as a vertical extension piece 1213.

[0043] The cavity enclosed by the vertical extension piece 1213 and the upper concave arc segment 1211 is an extension cavity of the accommodating cavity 13 , which effectively ensures the volume of the accommodating cavity 13 .

[0044] like Figure 1 As shown, the shape of the opening is set to be a rectangle, and the vertical extension piece 1213 and the lower vertical section 1212 are rectangular extension pieces.

[0045] As an optional embodiment, Figure 1 As shown, the cross-sectional shape of the accommodating cavity 13 is set to be semicircular, which is adapted to the cylindrical rock core.

[0046] As an optional embodiment, Figure 1 As shown, the support mechanism 11 includes a plurality of support frame assemblies. Optionally, the number of the support frame assemblies is set to two, which are symmetrically arranged on the bottom side of the box body 12.

[0047] The support frame assembly includes a support frame 111 , and a placement cavity 115 is provided on the support frame 111 .

[0048] During the process of transferring the core, the fixing cross bar can be inserted into the placement cavity 115, and the user can fix the core transfer box 1 and the core box 2 through the fixing cross bar to facilitate the synchronous flipping of the two.

[0049] As an optional embodiment, Figure 1 As shown, Figure 1 As shown, the support frame 111 includes two frames arranged opposite to each other, and a fixed support plate 112 and a movable support plate 113 are arranged between the two frames.

[0050] The movable support plate 113 is located below the fixed support plate 112 and is arranged parallel to the fixed support plate 112. A plurality of elastic buffers 114 are connected between the movable support plate 113 and the fixed support plate 112. The elastic buffers 114 are springs. The space between the two frames and below the movable support plate 113 forms a placement cavity 115.

[0051] The elastic buffer 114 has a buffering effect, providing a certain buffer space for the placement cavity 115, so that the movable support plate 113 can move adaptively with different specifications of the fixed cross bar, and has a wide range of applications.

[0052] Example 2:

[0053] Example 2 is based on Example 1:

[0054] The present invention provides a core preparation device, such as Figure 3 and Figure 4 As shown, the core preparation device includes a core transfer box 1.

[0055] The core arrangement device includes a core box 2, which is provided with a plurality of independent and parallel cavities for accommodating cores. Each cavity is connected and provided with an opening 21. Preferably, the number of cavities is set to three, and the core box 2 is a three-compartment core box.

[0056] When transferring the core, the box extension piece 121 of the inverted core transfer box 1 is inserted into the core box 2 along the edge of the opening 21. Thereafter, the core box 2 and the core transfer box 1 are flipped over so that the core can fall from the core box 2 into the core transfer box 1 without being damaged.

[0057] like Figure 5 As shown, after the core transfer box 1 is inserted into place, the box body extension piece 121 abuts against the inner bottom wall of the core box 2, and the box body 12 is flush with the opening 21 of the core box 2.

[0058] As an optional embodiment, Figure 4 As shown, the core sorting device includes a fixing rod mechanism 3 , and the fixing rod mechanism 3 includes a first fixing cross bar 31 , a second fixing cross bar 32 and a connecting assembly 33 .

[0059] A first fixing cross bar 31 is provided on the side of the core transfer box 1 away from the core box 2 , and a second fixing cross bar 32 is provided on the side of the core box 2 away from the core transfer box 1 . The first fixing cross bar 31 and the second fixing cross bar 32 are detachably connected via a connecting assembly 33 .

[0060] The first fixing cross bar 31 , the second fixing cross bar 32 and the connecting assembly 33 can firmly clamp and fix the relative positions of the core transfer box 1 and the core box 2 , thereby ensuring stable flipping of the core transfer box 1 and the core box 2 .

[0061] Alternatively, as Figure 5 As shown, the connecting assembly 33 includes a connecting screw and a connecting nut. The first fixed cross bar 31 is provided with a first connecting hole, and the second fixed cross bar 32 is provided with a second connecting hole. The two ends of the screw pass through the first connecting hole and the second connecting hole respectively and are threadedly connected with the corresponding connecting nuts. Furthermore, to ensure that the core transfer box 1, the core box 2 and the fixed rod mechanism 3 can be placed stably after flipping, the second fixed cross bar 32 is a hollow structure, and the corresponding connecting nut is located inside the second fixed cross bar 32. The second connecting hole is a groove hole opened to the end. The end of the connecting screw can be inserted into the groove hole along the second fixed cross bar 32 and be threadedly connected to the connecting nut located inside the second fixed cross bar 32.

[0062] Alternatively, if Figure 6 As shown, the connecting component 33 adopts a chain, and the first fixed cross bar 31 and the second fixed cross bar 32 are bound by the chain to achieve fixation.

[0063] As an optional embodiment, Figure 3 and Figure 7 As shown, the core sorting device includes a turning table mechanism 4, and the turning table mechanism 4 includes a stand 41, an operating table 42 and a fixing assembly 43.

[0064] The operating table 42 is rotatably disposed on the stand 41 . The operating table 42 is connected to a hand wheel 421 that rotates synchronously with the operating table 42 . The hand wheel 421 facilitates the 180° flipping operation of the operating table 42 .

[0065] A connecting chain is provided on the fixing assembly 43 , and a connecting hole 422 is provided on the operating platform 42 .

[0066] When flipping the core transfer box 1 and the core box 2, first fix the core transfer box 1 and the core box 2 through the fixing rod mechanism 3, and then pass the connecting chain through the connecting hole 422 and the supporting mechanism 11, so as to tighten the core transfer box 1 to the operating table 42. After that, hold the hand wheel 421 and turn it to make the core transfer box 1, the core box 2 and the operating table 42 flip synchronously, which is convenient to operate.

[0067] The core arrangement device with the core transfer box 1 can effectively realize the transfer of the core. Not only is the transfer effect significant, the core box replacement operation is convenient, and the core will not be damaged during the transfer process.

[0068] Example 3:

[0069] This embodiment is a method for replacing the core box 2 using the core arrangement device of embodiment 2, see Figure 4-Figure 8 As shown, the method for replacing the core box 2 includes the following steps:

[0070] Step 1: See Figure 4-Figure 8 As shown, the core transfer box 1 is inverted into each core grid of the core box 2 filled with soft and fragile cores, wherein the box body extension piece 121 of the opening edge of the core transfer box 1 is downwardly aligned with the inner wall of the core grid of the core box 2 until the box bottom of the core transfer box 1 is flush with the top height line of the core grid, and the box body extension piece 121 of the core transfer box 1 is tightly against the grid bottom of the core grid and half-wrapped with the soft and fragile core.

[0071] Furthermore, the box extension piece 121 enters the core grid under the action of inward gravity and automatically retracts inward after entering the core grid. The box extension piece 121 includes a lower vertical section 1212 and an upper concave arc section 1211. The upper concave arc section 1211 is curved inward and is used to embrace the cylindrical core in the core grid during insertion.

[0072] The core box 2 here is a common core box 2 in the prior art, which generally includes three core grids arranged in sequence, and each core grid can accommodate a soft and fragile core.

[0073] Because the core transfer box 1 has an inward gravitational force, the box extension piece 121 automatically contracts inward after entering the core cell. When the core transfer box 1 is completely inserted into the core cell, the box extension piece 121 fits snugly against the core cell, achieving a state where the soft, fragile core is partially enclosed by the box extension piece 121. The remaining core cells can be inserted into the box in the same manner.

[0074] Step 2: Install a fixing rod mechanism 3 between the core transfer box 1 and the core box 2. The first fixing cross bar 31 of the fixing rod mechanism 3 is installed on the core transfer box 1, and the second fixing cross bar 32 of the fixing rod mechanism 3 is installed on the core box 2. The connecting assembly 33 connects the first fixing cross bar 31 and the second fixing cross bar, so that the core transfer box 1 and the core box 2 form an assembled structure.

[0075] Furthermore, both ends of the first fixed cross bar 31 of the fixed rod mechanism 3 are respectively installed in the placement cavity 115 of the support mechanism 11 of the core transfer box 1; the second fixed cross bar 32 of the fixed rod mechanism 3 is placed on the side of the core box 2 away from the core transfer box 1.

[0076] Furthermore, the connecting component 33 is a connecting screw and a connecting nut, or a connecting chain.

[0077] Step 3: Fix the assembly structure on the turning table mechanism 4. The turning table mechanism 4 can only be turned in the second gear, turning 180 degrees, and transferring all the soft and fragile cores in situ into the core transfer box 1.

[0078] Specifically, the assembly structure is fixed on the turning platform mechanism 4, and the hand wheel 421 of the turning platform mechanism 4 is held and rotated to make the core transfer box 1, the core box 2 and the operating table 42 of the turning platform mechanism 4 turn 180 degrees synchronously.

[0079] It should be noted that the operating table 42 of the turning table mechanism here can be turned synchronously by 180° and cannot be turned by other angles, that is, it can only be turned in two levels, thereby reducing the uncertainty of human intervention.

[0080] Subsequently, the new core box 2' is inverted on the core transfer box 1 until the bottom of the core transfer box 1 is flush with the top height line of the core grid of the new core box 2', forming an assembly structure again. The assembly structure containing the inverted new core box 2' is turned 180 degrees by the turning table mechanism 4 to complete the replacement of the core box, so that the soft and fragile core can be transferred intact in situ to the new core box 2'.

[0081] During the replacement of the core box 2, the soft and fragile core is always stably fixed in the core transfer box 1 under the protection of the box extension piece 121 and the core transfer box 1, and the original structure, construction and deposition sequence of the core remain unchanged.

[0082] Compared with the traditional manual transfer of soft and fragile cores using a shovel, which requires multiple transfers and is slow (two people per group, 4-5 minutes / meter), the replacement method of this embodiment can completely solve the problems of slow manual speed, many human-dominated factors, and destruction of the original state of the soft and fragile cores (the original cores become more fragmented, the layer structure and geological structure phenomena (morphology) are destroyed, the original length of the cores is shortened or lengthened, and the core sedimentation sequence is dislocated and changed), greatly improving the transfer and replacement efficiency of soft and fragile cores, with a replacement speed of only 1-2 minutes / meter; because the turning table mechanism can only turn 180 degrees (one gear), the technicians' subjective judgment of the horizontal direction and rotation angle is further reduced, realizing a modular workflow similar to a machine, and ensuring the complete packaging, transfer and replacement of the cores.

[0083] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for replacing a core box for a soft and fragile core, characterized in that: The method uses a core transfer box, which includes a support mechanism and a box body fixedly arranged on the support mechanism. The box body is provided with a receiving cavity for accommodating the core, and the cross-sectional shape of the receiving cavity is set to be semicircular. The top side of the box body is provided with an opening communicating with the receiving cavity, and the top side of the box body is located at the edge of the opening and extends upward to form a box body extension piece, and a gap is provided between two adjacent box body extension pieces. The box body extension piece corresponding to the long side of the opening includes a lower vertical section and an upper concave arc section, wherein the upper concave arc section is located above the lower vertical section and is integrally provided with the lower vertical section, and the upper concave arc section is bent inward; The support mechanism includes two support frame assemblies, and the support frame assemblies are symmetrically arranged on the bottom side of the box body; The support frame assembly includes a support frame, and the support frame is provided with a placement cavity; The invention also includes a fixing rod mechanism, the fixing rod mechanism including a first fixing cross bar, a second fixing cross bar and a connecting assembly, wherein the first fixing cross bar and the second fixing cross bar are detachably connected via the connecting assembly; The method comprises the following steps: S1: Place the core transfer box upside down in each core compartment of a core box filled with soft and fragile cores, with the box body extension piece at the opening edge of the core transfer box facing downward and aligned with the inner wall of the core compartment of the core box, until the box bottom of the core transfer box is flush with the top height line of the core compartment, and the box body extension piece of the core transfer box is in close contact with the cell bottom of the core compartment and half-covers the soft and fragile cores; S2: A fixing rod mechanism is installed between the core transfer box and the core box, wherein a first fixing cross bar of the fixing rod mechanism is installed on the core transfer box, and a second fixing cross bar of the fixing rod mechanism is installed on the core box. A connecting assembly connects the first fixing cross bar and the second fixing cross bar, so that the core transfer box and the core box form an assembled structure; Wherein, both ends of the first fixing cross bar of the fixing rod mechanism are respectively installed in the placement cavity of the support mechanism of the core transfer box; the second fixing cross bar of the fixing rod mechanism is placed on the side of the core box away from the core transfer box; S3: Fix the assembly structure on the turning table mechanism. The turning table mechanism can only turn 180 degrees in the second gear to transfer all the soft and fragile cores into the core transfer box in situ. S4: The new core box is placed upside down on the core transfer box until the bottom of the core transfer box is flush with the top height line of the core grid of the new core box, and the assembly structure is formed again according to step S2; S5: The assembly structure containing the inverted new core box is turned 180 degrees by the turning table mechanism to complete the replacement of the new core box; The box extension piece in step S1 automatically contracts inward after entering the core grid; During the insertion process of the box extension piece in step S1, the box extension piece is used to surround the columnar core in the core grid.

2. The method for replacing a core box for a soft and fragile core according to claim 1, characterized in that: In step S2, the connecting component is a connecting screw and a connecting nut, or the connecting component is a connecting chain.

3. The method for replacing a core box for a soft and fragile core according to claim 1, characterized in that: Step S3 specifically includes fixing the assembly structure on the turning table mechanism, holding the hand wheel of the turning table mechanism and rotating it, so that the core transfer box, the core box and the operating table of the turning table mechanism are synchronously turned 180 degrees.

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