Bolt preformed hole die and equipment foundation structure

Abstract

The utility model relates to the technical field of dies, and provides a bolt preformed hole die and an equipment foundation structure, and the bolt preformed hole die comprises a die main body and an adjusting part. The mold main body comprises a plurality of first cylinders and a plurality of second cylinders, the plurality of first cylinders and the plurality of second cylinders are arranged at intervals, the adjacent first cylinders and the adjacent second cylinders are connected with each other, and the adjacent first cylinders and the adjacent second cylinders are tangent to each other; the adjusting part comprises an adjusting shaft and an adjusting structure, the adjusting shaft is arranged in the center of the mold body, the adjusting structure is in threaded connection with the adjusting shaft, and the adjusting structure is connected with each second barrel; when the adjusting shaft rotates to drive the adjusting structure to move, the second barrel is suitable for being close to or away from the adjusting shaft so as to adjust the size of a mold body composed of the second barrel and the first barrel. The bolt preformed hole forming device can adapt to forming of bolt preformed holes of different sizes and is high in practicability; and the bolt preformed hole mold is convenient to disassemble for repeated use, and the design is more environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a bolt pre-hole mold and an equipment foundation structure. Background Art

[0002] During the construction of the equipment foundation, it is necessary to reserve anchor bolt holes for the equipment on the concrete foundation. Generally, methods such as supporting steel corrugated pipes, plastic pipes or wooden formwork are adopted, and they are removed after the concrete solidifies.

[0003] Since the sizes of the bolt holes are not the same, the support mold needs to be processed according to the different sizes of the bolt holes, which results in high manufacturing costs. The installation cycle of the support mold is long, which is not conducive to improving quality and efficiency. In addition, the expansion of the concrete during solidification may cause the support mold to become stuck and difficult to remove. Utility Model Content

[0004] The first aspect of the utility model provides a bolt pre-hole mold to solve the above-mentioned technical defects in the prior art. It can adapt to the forming of bolt pre-holes of different sizes, has strong practicality, and the bolt pre-hole mold can be easily disassembled for reuse, and the design is more environmentally friendly and durable.

[0005] A second aspect of the present invention provides an equipment infrastructure.

[0006] A first aspect of the utility model provides a bolt reserved hole mold, comprising a mold body and an adjusting component.

[0007] The mold body includes a first cylinder and a second cylinder. A plurality of the first cylinder and the second cylinder are provided, and the plurality of the first cylinders and the second cylinders are arranged at intervals. Adjacent first cylinders and second cylinders are connected to each other, and adjacent first cylinders and second cylinders are tangent to each other to adjust the size of the mold body.

[0008] The adjusting component includes an adjusting shaft and an adjusting structure. The adjusting shaft is arranged at the center of the mold body. The adjusting structure is sleeved on the adjusting shaft and threadedly connected to the adjusting shaft. The adjusting structure is connected to each second cylinder. When the adjusting shaft rotates to drive the adjusting structure to move, the second cylinder is suitable for approaching or moving away from the adjusting shaft.

[0009] According to the bolt pre-hole mold provided by the present invention, the mold body further includes a connecting structure, which is provided at at least one end of the mold body and is used to connect the adjacent first cylinder and the second cylinder.

[0010] According to the bolt pre-hole mold provided by the present invention, the connection structure includes a plurality of connecting arms and hinges having the same number as the connecting arms, and the connecting arms connect the adjacent first cylinder and the second cylinder through the corresponding hinges.

[0011] According to the bolt pre-hole mold provided by the utility model, the adjustment structure includes an adjustment body and a connecting rod. The adjustment body is sleeved on the adjustment shaft and threadedly connected to the adjustment shaft. The number of the connecting rods is the same as the number of the second cylinders. The first end of each connecting rod is rotatably connected to the adjustment body, and the second end of each connecting rod is rotatably connected to the second cylinder.

[0012] According to the bolt pre-hole mold provided by the utility model, the outer side wall of the adjusting body is provided with a plurality of first hinge seats in an array along its own circumferential direction, the number of the first hinge seats is the same as the number of the connecting rods, and the first end of each connecting rod is rotatably connected to the corresponding first hinge seat.

[0013] According to the bolt pre-hole mold provided by the present invention, the outer side wall of the adjustment body is provided with a plurality of mounting planes, and each of the first hinged seats is provided on a corresponding mounting plane.

[0014] According to the bolt pre-hole mold provided by the present invention, the side wall of each second cylinder is provided with a second hinge seat, and the second hinge seat is rotatably connected to the corresponding connecting rod.

[0015] According to the bolt pre-hole mold provided by the utility model, the adjusting shaft is provided with a first adjusting section and a second adjusting section connected to each other, the first adjusting section and the second adjusting section are both provided with threads, and the threads of the first adjusting section and the threads of the second adjusting section have opposite rotation directions;

[0016] The adjustment structure is provided in two groups, wherein the adjustment structure in one group is threadedly connected to the first adjustment section, and the adjustment structure in the other group is threadedly connected to the second adjustment section.

[0017] A second aspect of the present invention provides an equipment foundation structure, comprising an equipment foundation main body, wherein bolt reserved holes are formed on the equipment foundation main body, and the bolt reserved holes are formed by any one of the bolt reserved hole molds described above.

[0018] According to the equipment foundation structure provided by the utility model, the center of the bolt reserved hole coincides with the center of the adjustment shaft;

[0019] The diameter of the bolt reserved hole is equal to the preset distance, and the preset distance is the distance between the center of the adjustment shaft and the tangent point of the first cylinder and the second cylinder.

[0020] The bolt hole mold provided by the present invention changes the support method of the existing bolt hole mold. It is composed of multiple first and second cylinders arranged at intervals to form a mold body, with adjacent first and second cylinders tangent to each other. An adjustment shaft is provided at the center of the mold body, and an adjustment structure is threadedly connected to the adjustment shaft. The adjustment structure is connected to the second cylinder. When the adjustment shaft rotates to drive the adjustment structure to move, the second cylinder is adapted to move closer to or further away from the adjustment shaft, thereby changing the size of the mold body composed of multiple first and second cylinders arranged at intervals to accommodate the formation of bolt holes of different sizes. The utility model is highly practical. The bolt hole mold can also be easily disassembled for reuse, making the design more environmentally friendly.

[0021] The equipment foundation structure provided by the utility model includes the above-mentioned bolt pre-hole mold, which is beneficial to the control of the installation quality of the equipment foundation bolts and reduces the workload of supervision and inspection; and the use of the bolt pre-hole mold can reduce the concrete chiseling work, which is beneficial to the protection of the finished product caused by the chiseling and the prevention of foreign matter problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0023] Figure 1 This is one of the structural diagrams of the bolt pre-hole mold provided by the prior art.

[0024] Figure 2 This is the second structural diagram of the bolt pre-hole mold provided by the prior art.

[0025] Figure 3 It is a structural schematic diagram of a bolt pre-hole mold provided by an embodiment of the utility model.

[0026] Figure 4 It is a bottom view of the bolt pre-hole mold provided by an embodiment of the utility model.

[0027] Figure 5 It is a partial structural schematic diagram of a bolt pre-hole mold provided by an embodiment of the utility model.

[0028] Reference numerals:

[0029] 10. Mold body; 11. First cylinder; 12. Second cylinder; 13. Connecting structure; 131. Connecting arm; 132. Hinge;

[0030] 20. Adjustment component; 21. Adjustment shaft; 211. First adjustment section; 212. Second adjustment section; 22. Adjustment structure; 221. Adjustment body; 2211. Mounting plane; 222. Connecting rod; 223. First hinge seat; 224. Second hinge seat. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. 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 embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0033] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0035] Figure 1 This is one of the structural diagrams of the bolt pre-hole mold provided by the prior art. Figure 2 This is the second structural diagram of the bolt pre-hole mold provided by the prior art.

[0036] The equipment foundation usually requires reserved holes for anchor bolts, and the bolts in the holes are grouting after the equipment is in place. Figure 1 As shown, a bolt hole mold is used to weld the keel steel bar 100a and the positioning steel bar 200a together to form a cylindrical box with a column forming cavity. A plastic film 400a is wrapped around the fixed-length foam 300a and matched to be placed in the cylindrical cavity. After the concrete solidifies, the fixed-length foam 300a is removed. Figure 2 As shown, another existing bolt pre-hole mold is processed into a steel cage 200b matching the bolt pre-hole through a steel ring 400b and a vertical steel bar 500b, and then a hole-forming pipe 100b matching the bolt pre-hole is sunk into the steel cage 200b. After the concrete solidifies, the hole-forming pipe 100b is taken out through the lifting ear 300b.

[0037] Since the sizes of the bolt holes are not the same, different cylindrical boxes or steel cages and fixed-length foams or hole-forming tubes need to be processed according to the different sizes of the bolt holes. The manufacturing cost is high, and the cylindrical boxes, steel cages and fixed-length foams are not reusable, which increases the installation cost and the installation cycle, which is not conducive to improving quality and efficiency. Secondly, the fixed-length foam rods need to be dissolved with hydrogen peroxide. If the residual hydrogen peroxide solution in the holes is not cleaned thoroughly, it will cause corrosion of the bolts, and the bonding strength of the concrete will not meet the requirements during the secondary grouting of concrete. Furthermore, due to the expansion of the concrete during the solidification process, the hole-forming tube will be stuck, making it inconvenient to remove. For this reason, the utility model provides a new type of bolt hole mold.

[0038] Figure 3 It is a structural schematic diagram of a bolt pre-hole mold provided by an embodiment of the utility model. Figure 4 It is a bottom view of the bolt pre-hole mold provided by an embodiment of the utility model. Figure 5 It is a partial structural schematic diagram of a bolt pre-hole mold provided by an embodiment of the utility model.

[0039] See Figures 3 to 5 An embodiment of the utility model provides a bolt reserved hole mold, which includes a mold body 10 and an adjusting component 20. The mold body 10 is used to limit the shape and size of the bolt reserved hole, and the adjusting component 20 is used to adjust the expansion and contraction of the mold body 10 to adjust the size of the bolt reserved hole limited by the mold body 10.

[0040] The mold body 10 includes a first barrel 11 and a second barrel 12. There are multiple first barrels 11 and second barrels 12, each of which is spaced apart. Adjacent first barrels 11 and second barrels 12 are connected to each other and tangential to each other. Therefore, regardless of how the relative positions of the first barrel 11 and second barrel 12 change, the mold body 10 composed of the multiple first barrels 11 and second barrels 12 spaced apart can ensure good sealing without the need for additional structures such as sealing plates.

[0041] The adjusting component 20 includes an adjusting shaft 21 and an adjusting structure 22. The adjusting shaft 21 can be a threaded rod or a screw. The adjusting shaft 21 is arranged at the center of the mold body 10. The adjusting structure 22 is sleeved on the adjusting shaft 21 and threadedly connected to the adjusting shaft 21. The adjusting structure 22 is connected to the second cylinder 12.

[0042] Since the distance between the second cylinder 12 and the adjusting shaft 21 is smaller than the distance between the first cylinder 11 and the adjusting shaft 21, that is, the second cylinder 12 is closer to the adjusting shaft 21, the adjusting structure 22 can be connected to the second cylinder 12. When the adjusting shaft 21 rotates to drive the adjusting structure 22 to move, the second cylinder 12 is suitable for approaching or moving away from the adjusting shaft 21, thereby changing the size of the mold main body 10 composed of multiple first cylinders 11 and second cylinders 12 arranged at intervals to adapt to the forming of bolt reserved holes of different sizes.

[0043] Equivalently, the size of the mold body 10 composed of the first cylinder 11 and the second cylinder 12 arranged at intervals depends on the relative position between the first cylinder 11 and the second cylinder 12, that is, the relative position between the first cylinder 11 and the second cylinder 12 is mainly determined by the moving position of the second cylinder 12.

[0044] It can be understood that the bolt pre-hole mold provided by the embodiment of the present invention changes the support method of the original bolt pre-hole mold, and is formed by a plurality of first cylinders 11 and second cylinders 12 arranged at intervals to form a mold body 10, and the adjacent first cylinders 11 and second cylinders 12 are tangent to each other, and an adjustment shaft 21 is provided at the center position of the mold body 10, and an adjustment structure 22 is threadedly connected to the adjustment shaft 21, and the adjustment structure 22 is connected to the second cylinder 12. When the adjustment shaft 21 rotates to drive the adjustment structure 22 to move, the second cylinder 12 is adapted to move closer to or away from the adjustment shaft 21, thereby changing the size of the mold body 10 composed of a plurality of first cylinders 11 and second cylinders 12 arranged at intervals to adapt to the formation of bolt pre-holes of different sizes, and has strong practicality; and the bolt pre-hole mold can be easily disassembled for reuse, and the design is more environmentally friendly.

[0045] Continue reading Figure 3 and Figure 4In some embodiments of the utility model, the mold main body 10 further includes connecting structure 13, connecting structure 13 is arranged at at least one end of mold main body 10, is used to connect adjacent first cylinder body 11 and second cylinder body 12.

[0046] Equivalent, connecting structure 13 is arranged at the end of mold main body 10 and is used to connect adjacent first cylinder body 11 and second cylinder body 12.In addition, multiple first cylinder body 11 and second cylinder body 12 can also adopt the form of rope binding, ensure that adjacent first cylinder body 11 and second cylinder body 12 are tangent, and the rope can be fixed on the outer wall of second cylinder body 12 close to distance adjusting shaft 21.

[0047] Specifically, connecting structure 13 includes multiple connecting arms 131 and the same number of articulated pieces 132 as connecting arm 131, and connecting arm 131 connects adjacent first cylinder body 11 and second cylinder body 12 through corresponding articulated piece 132.

[0048] Among them, articulated piece 132 can be bolt or pin shaft structure, bolt is screwed in the end of corresponding first cylinder body 11 and second cylinder body 12, and connecting arm 131 is connected with adjacent first cylinder body 11 and second cylinder body 12 through bolt.

[0049] Continue to refer to Figure 5 In some embodiments of the utility model, adjusting structure 22 includes adjusting main body 221 and connecting rod 222, adjusting main body 221 is screwed with adjusting shaft 21, and the number of connecting rod 222 is same with the number of second cylinder body 12, the first end of each connecting rod 222 is rotatably connected with adjusting main body 221, and the second end of each connecting rod 222 is rotatably connected with second cylinder body 12.

[0050] Further, the outer side wall of adjusting main body 221 is arrayed with multiple first articulated seats 223 along the circumferential direction of itself, the number of first articulated seat 223 is same with the number of connecting rod 222, and the first end of each connecting rod 222 is rotatably connected with corresponding first articulated seat 223.

[0051] In order to facilitate the installation of first articulated seat 223, multiple installation planes 2211 are arranged on the outer side wall of adjusting main body 221, and each first articulated seat 223 is arranged on corresponding installation plane 2211.Therefore, adjusting main body 221 is equivalent to a nut, and first articulated seat 223 is welded and fixed on the outer side wall of the nut.

[0052] Continue to refer to Figure 3 In some embodiments of the utility model, the side wall of each second cylinder body 12 is provided with second articulated seat 224, and second articulated seat 224 is rotatably connected with corresponding connecting rod 222.

[0053] Continue to refer to Figures 3 to 5In some embodiments of the present invention, the adjusting shaft 21 is provided with a first adjusting section 211 and a second adjusting section 212 connected to each other. The first adjusting section 211 and the second adjusting section 212 are both provided with threads, and the threads of the first adjusting section 211 and the threads of the second adjusting section 212 have opposite rotation directions. In other words, the adjusting shaft 21 is provided with two sections of threads having opposite rotation directions.

[0054] Two groups of adjustment structures 22 are provided, wherein one group of adjustment structures 22 is threadedly connected to the first adjustment section 211 , and the other group of adjustment structures 22 is threadedly connected to the second adjustment section 212 .

[0055] Since the adjustment structure 22 includes an adjustment body 221 and a connecting rod 222, the adjustment body 221 is disposed through the adjustment shaft 21 and is threadedly connected to the adjustment shaft 21. The number of connecting rods 222 is the same as the number of second cylindrical bodies 12. The first end of each connecting rod 222 is rotatably connected to the adjustment body 221, and the second end of each connecting rod 222 is rotatably connected to the second cylindrical body 12. Therefore, the adjustment bodies 221 in the two sets of adjustment structures 22 also have opposite spiral directions. When the adjustment shaft 21 rotates, the two sets of adjustment bodies 221 can generate opposite or opposite movement.

[0056] Equivalently, the two sets of adjustment structures 22 are respectively arranged near the two ends of the mold body 10 , so that during the adjustment process, the upper and lower ends of the mold body 10 move simultaneously, which can maintain the structural consistency of the mold body 10 .

[0057] When the rotating adjustment shaft 21 causes the upper and lower groups of adjustment bodies 221 to move in opposite directions, the connecting arm 131 located at the ends of the first cylinder 11 and the second cylinder 12 drives the upper and lower parts of the first cylinder 11 to move outward at equal distances with the center of the hinge 132 on the second cylinder 12 as the center of the circle. At this time, the mold body 10 is in an expanded state as a whole, and the mold can be in use.

[0058] When the adjustment shaft 21 is rotated to move the upper and lower adjustment bodies 221 toward each other, the connecting arms 131 at the ends of the first and second cylinders 11, 12, drive the first cylinder 11 to move inward at equal intervals, with the center of the hinge 132 on the second cylinder 12 as the center. At this point, the mold body 10 is completely reduced, and the mold can be removed. This reduces the workload of chiseling the holes reserved for the equipment foundation, which helps to save a certain amount of concrete in the project.

[0059] The utility model also provides an equipment foundation structure, which comprises an equipment foundation main body. Bolt pre-set holes are formed on the equipment foundation main body, and the bolt pre-set holes are formed by a bolt pre-set hole mold.

[0060] The center of the bolt hole coincides with the center of the adjustment shaft 21 ; the diameter of the bolt hole is equal to the preset distance, which is the distance between the center of the adjustment shaft 21 and the tangent point of the first cylinder 11 and the second cylinder 12 .

[0061] The specific implementation process of the device infrastructure provided by the embodiment of the utility model is as follows:

[0062] Rotate the adjusting shaft 21, and take the pitch circle R formed by the tangent point of the first cylinder 11 and the second cylinder 12 as the size of the bolt reserved hole required by the design document. Take the center of the adjusting shaft 21 as the fixed reference point, and the reference point coincides with the center of the bolt reserved hole. After fixing the bolt reserved hole mold.

[0063] Place the bolt reserved hole mold at the designed position of the circular anchor bolt hole reserved for the equipment foundation, pour concrete in layers, and after the concrete is initially solidified, rotate the adjustment shaft 21 to make the upper and lower groups of adjustment bodies 221 move toward each other. The connecting arm 131 located at the end of the first cylinder 11 and the second cylinder 12 takes the center of the hinge 132 on the second cylinder 12 as the center of the circle, and drives the first cylinder 11 to move inward equidistantly. At this time, the mold body 10 is in a reduced state as a whole, and the mold can be quickly removed.

[0064] After the concrete has finally set, clean the holes formed by the bolt reserved hole mold, use an iron hook to roughen the concrete surface in the circular hole, clean up the garbage in the hole, and then seal the hole to obtain the circular anchor bolt hole reserved for the equipment foundation.

[0065] The arrangement of the utility model is conducive to the control of the installation quality of the equipment foundation bolts and reduces the workload of supervision and inspection; at the same time, the use of the bolt reserved hole mold can reduce the concrete chiseling work, which is conducive to the protection of the finished product caused by the chiseling and the prevention of foreign matter problems.

[0066] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bolt reserved hole mold, characterized in that: include: A mold body (10) comprises a first cylinder (11) and a second cylinder (12), wherein a plurality of the first cylinder (11) and the second cylinder (12) are provided, the plurality of the first cylinders (11) and the second cylinders (12) are arranged at intervals, adjacent first cylinders (11) and second cylinders (12) are connected to each other, and adjacent first cylinders (11) and second cylinders (12) are tangent to each other; An adjusting component (20) comprises an adjusting shaft (21) and an adjusting structure (22), wherein the adjusting shaft (21) is arranged at the center of the mold body (10), the adjusting structure (22) is sleeved on the adjusting shaft (21) and is threadedly connected to the adjusting shaft (21), and the adjusting structure (22) is connected to each second cylinder (12); when the adjusting shaft (21) rotates to drive the adjusting structure (22) to move, the second cylinder (12) is adapted to move closer to or farther away from the adjusting shaft (21) to adjust the size of the mold body (10).

2. The bolt hole mold according to claim 1, characterized in that: The mold body (10) further comprises a connecting structure (13), wherein the connecting structure (13) is provided at at least one end of the mold body (10) and is used to connect the adjacent first cylinder (11) and the second cylinder (12).

3. The bolt hole mold according to claim 2, characterized in that: The connecting structure (13) comprises a plurality of connecting arms (131) and hinges (132) the same number as the connecting arms (131). The connecting arms (131) connect the adjacent first cylinders (11) and the second cylinders (12) via the corresponding hinges (132).

4. The bolt hole mold according to claim 1, characterized in that: The adjusting structure (22) comprises an adjusting body (221) and a connecting rod (222); the adjusting body (221) is sleeved on the adjusting shaft (21) and is threadedly connected to the adjusting shaft (21); the number of the connecting rods (222) is the same as the number of the second cylinder (12); the first end of each connecting rod (222) is rotatably connected to the adjusting body (221), and the second end of each connecting rod (222) is rotatably connected to the second cylinder (12).

5. The bolt hole mold according to claim 4, characterized in that: The outer side wall of the regulating body (221) is provided with a plurality of first hinge seats (223) in an array along its circumferential direction. The number of the first hinge seats (223) is the same as the number of the connecting rods (222). The first end of each connecting rod (222) is rotatably connected to the corresponding first hinge seat (223).

6. The bolt hole mold according to claim 5, characterized in that: The outer side wall of the regulating body (221) is provided with a plurality of mounting planes (2211), and each of the first hinged seats (223) is provided on a corresponding mounting plane (2211).

7. The bolt hole mold according to claim 5, characterized in that: A second hinge seat (224) is provided on the side wall of each second cylinder (12), and the second hinge seat (224) is rotatably connected to the corresponding connecting rod (222).

8. The bolt hole mold according to claim 1, characterized in that: The adjusting shaft (21) is provided with a first adjusting section (211) and a second adjusting section (212) connected to each other, the first adjusting section (211) and the second adjusting section (212) are both provided with threads, and the threads of the first adjusting section (211) and the threads of the second adjusting section (212) have opposite rotation directions; The adjustment structure (22) is provided in two groups, wherein one group of the adjustment structure (22) is threadedly connected to the first adjustment section (211), and the other group of the adjustment structure (22) is threadedly connected to the second adjustment section (212).

9. A device infrastructure, characterized in that: It comprises an equipment base body, on which bolt reserved holes are formed, and the bolt reserved holes are formed by the bolt reserved hole mold according to any one of claims 1 to 8.

10. The equipment infrastructure according to claim 9, characterized in that: The center of the bolt reserved hole coincides with the center of the adjustment shaft (21); The diameter of the bolt reserved hole is equal to a preset distance, and the preset distance is the distance between the center of the adjustment shaft (21) and the tangent point of the first cylinder (11) and the second cylinder (12).

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