Vibration reduction type prefabricated cabin

Abstract

The utility model relates to a vibration reduction type prefabricated cabin. The vibration reduction type prefabricated cabin comprises a prefabricated cabin body and supporting legs installed at the bottom of the prefabricated cabin body. The supporting legs comprise spherical hinges and buffers, the top ends of the spherical hinges are fixedly installed at the bottom of the prefabricated cabin body through flanges, the bottom ends of the spherical hinges are fixedly connected with piston pull rods of the buffers, and the flanges are arranged at the bottom ends of the buffers. According to the prefabricated cabin designed by the utility model, the spherical hinges with the buffers are used as the supporting legs, so that the effects of inclination resistance and vibration resistance can be achieved, the supporting leg structure has a height difference compensation function, negative problems caused by differential settlement of a foundation do not need to be worried about, a large number of civil engineering projects on a construction site are also omitted, and the construction progress of a transformer substation is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy field, concretely relates to a damping type prefabricated cabin. BACKGROUND

[0002] With the acceleration of the construction pace of intelligent power grid in China, it is necessary to change the relatively lagging situation of the construction speed of transformer substations, accelerate the construction period of intelligent transformer substations, and the state grid has proposed the construction mode of "standard distribution type transformer substation". Through the scheme of "standardization, factory processing and assembly type construction", the popularization and application of intelligent transformer substations, i.e. prefabricated cabins, are realized. The electrical equipment in the prefabricated cabin is usually integrated and installed in a factory, the prefabricated cabin is transported to a construction site in the form of vehicle transportation, and then the prefabricated cabin is placed on the plate foundation through civil construction.

[0003] For most transformer substation constructions in remote mountainous areas, the transportation route is complex, and the bumping of vehicles during transportation will cause the prefabricated cabin to vibrate, and the vibration will cause the precise electrical equipment inside the prefabricated cabin to be damaged. Therefore, the vibration problem must be solved during transportation. In the prior art, a damping device is usually arranged between the carriage and the prefabricated cabin to solve the vibration problem during transportation, but a large amount of civil construction is still required at the construction site to complete the placement of the prefabricated cabin. UTILITY MODEL CONTENT

[0004] The utility model discloses a damping type prefabricated cabin, which uses a ball hinge with a buffer as a supporting leg of the prefabricated cabin, so that the damping effect is achieved and the amount of civil construction at the construction site is reduced.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] A damping type prefabricated cabin comprises a prefabricated cabin main body and a supporting leg installed at the bottom of the prefabricated cabin main body.

[0007] Further, a surrounding structure is arranged on the outer side of the supporting leg at the lower part of the prefabricated cabin main body.

[0008] Further, the surrounding structure is formed by enclosing windproof and dustproof plates.

[0009] Further, the ball hinge comprises an upper flange, a ball seat, a ball head and a ball hinge rod, one end of the ball seat is fixedly connected with the upper flange, a circular hole for accommodating the ball head is arranged at the other opposite end of the ball seat, the ball head is embedded in the circular hole of the ball seat, and one end of the ball head is fixedly connected with the ball hinge rod.

[0010] Further, the outer side wall of the lower part of the ball hinge rod is provided with threads.

[0011] Further, the buffer adopts an elastic cement buffer.

[0012] Further, the elastic cement buffer comprises a piston pull rod, an inner sleeve, a cylinder and an elastic cement material; the cylinder is hollow and provided with a lower flange at the bottom; the inner sleeve is a hollow structure with two open opposite ends, is embedded in the cylinder and can axially slide relative to the cylinder; the piston pull rod is placed in the inner sleeve and can axially slide along the inner sleeve, and the elastic cement material is filled in the cavity of the lower part of the piston pull rod.

[0013] Further, the piston pull rod comprises a ball hinge fixing cylinder and a spring cylinder, the spring cylinder is open at the top and bottom and hollow, and is provided with a butterfly spring inside; the bottom of the ball hinge fixing cylinder is closed, the top of the ball hinge fixing cylinder is open, the open end of the top of the ball hinge fixing cylinder is connected with the ball hinge, and the bottom of the ball hinge fixing cylinder is detachably connected with the open end of the top of the spring cylinder.

[0014] Further, the ball hinge fixing cylinder comprises a disc body, the top of the disc body is provided with a hollow fixing sleeve, the inner wall of the fixing sleeve is provided with threads, and the outer diameter of the fixing sleeve is smaller than the outer diameter of the disc body; the bottom of the disc body is provided with a cylinder, the outer diameter of the cylinder is smaller than the outer diameter of the disc body, the outer side wall of the cylinder is provided with threads, and the bottom of the cylinder is closed; the spring cylinder comprises a cylinder body, the inner cavity of the cylinder body is divided into an upper cavity and a lower cavity which are communicated, the inner diameter of the upper cavity is larger than the inner diameter of the lower cavity, the inner wall of the upper cavity is provided with threads, the cylinder of the ball hinge fixing cylinder is placed in the upper cavity, a limiting ring is formed on the inner wall of the lower cavity, the limiting ring limits the bottom of the butterfly spring, and the bottom of the cylinder limits the top of the butterfly spring.

[0015] Further, the inner sleeve comprises a cylinder body, the cylinder body is formed in a split structure, a limiting ring is formed at the top of the cylinder body, and the limiting ring limits the disc body of the piston pull rod; a limiting boss is formed on the outer wall of the lower part of the cylinder body, and a limiting portion is arranged on the inner wall of the cylinder, and the limiting portion limits the limiting boss.

[0016] The prefabricated cabin designed in the utility model takes the ball hinge with the buffer as a supporting leg, can play a role of resisting inclination and vibration, has a height difference compensation function, does not need to worry about negative problems caused by uneven settlement of the foundation, saves a large amount of civil engineering at the construction site, and helps to speed up the construction process of the substation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the prefabricated cabin in the embodiment;

[0018] Figure 2 It is a front view of the prefabricated cabin without installing the enclosure structure in the embodiment;

[0019] Figure 3 Figure 1 is a schematic view of a leg structure of a prefabricated cabin in the embodiment;

[0020] Figure 4 Figure 2 is an exploded view of the leg structure;

[0021] Figure 5 Figure 3 is an exploded view of the structure of a spherical hinge;

[0022] Figure 6 Figure 4 is a schematic view of the structure of a spherical hinge fixing cylinder;

[0023] Figure 7 Figure 5 is a schematic view of the bottom structure of the spherical hinge fixing cylinder;

[0024] Figure 8 Figure 6 is a schematic view of the structure of a spring cylinder;

[0025] Figure 9 Figure 7 is a sectional view of a piston pull rod;

[0026] Figure 10 Figure 8 is a sectional view of a bumper;

[0027] Figure 11 Figure 9 is a schematic view of the prefabricated cabin being tilted to a horizontal state due to an external force.

[0028] BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 1, prefabricated cabin main body; 2, leg; 3, enclosure structure; 4, vehicle body;

[0030] 21, spherical hinge; 22, piston pull rod; 23, inner sleeve; 24, cylinder;

[0031] 211, upper flange; 212, ball seat; 213, round hole; 214, ball head; 215, spherical hinge rod; 216, thread;

[0032] 221, fixing sleeve; 222, disc body; 223, thread; 224, bottom plate; 225, thread; 226, cylinder body; 227, limiting ring; 228, butterfly spring;

[0033] 231, cylinder body; 232, round hole; 233, limiting boss; 234, limiting ring;

[0034] 241, cylinder body; 242, round hole; 243, lower flange. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0036] The embodiment discloses a damping type prefabricated cabin, like Figure 1And Figure 2 As shown in the drawings, the prefabricated cabin mainly includes a prefabricated cabin body 1, a plurality of legs 2 installed at the bottom of the prefabricated cabin body 1, and a surrounding structure 3 installed at the lower part of the prefabricated cabin body 1 and located outside a circle of the legs 2. The prefabricated cabin body 1 serves as an integrated bearing box of electrical equipment, and the electrical equipment is pre-installed in the prefabricated cabin body 1 in the factory. The legs 2 serve as a supporting and fixing structure of the prefabricated cabin body 1, and after the legs 2 are arranged, the prefabricated cabin body 1 can be elevated 400-500 mm from the ground, which is beneficial to reduce wind resistance and reduce the horizontal force of the pile foundation. The legs 2 are of a fabricated structure, and no site civil construction is required, which can reduce the amount of civil construction. The surrounding structure 3 is used to surround the legs 2 to prevent small animals from entering the bottom of the prefabricated cabin body 1 when the prefabricated cabin body 1 is outdoors. The surrounding structure 3 is usually formed by surrounding with windproof and dustproof plates, and the surrounding structure 3 does not need to be installed during transportation, but can be assembled after the prefabricated cabin body 1 is transported to the construction site.

[0037] Most of the prefabricated cabin bodies 1 in the prior art do not have legs at the bottom, but a plate foundation for placing the prefabricated cabin body 1 is formed by civil construction at the construction site. This structure has a large amount of civil construction, which will affect the construction progress of the substation. In order to reduce the amount of civil construction, some design parties in the prior art form a plurality of civil legs by civil construction at the construction site. The civil legs are of a reinforced concrete structure, and the prefabricated cabin body 1 is directly placed on the civil legs. Although the latter method can reduce the amount of civil construction, civil construction is still required, and such civil legs do not have the function of height difference compensation. When the prefabricated cabin body 1 encounters uneven settlement of the foundation, the prefabricated cabin body 1 will be inclined, and the busbar of the electrical equipment in the prefabricated cabin body 1 will be stretched and dislocated or broken.

[0038] To improve the problems existing in the prior art described above, the structure of the leg 2 in the embodiment is shown in Figure 3 and Figure 4 The leg 2 is mainly composed of a ball hinge 21 and a buffer. The top end of the ball hinge 21 is fixedly installed at the bottom of the prefabricated cabin body 1 through a flange, the bottom end of the ball hinge 21 is fixedly connected with a piston pull rod of the buffer, and the bottom end of the buffer is provided with a flange. The buffer of the embodiment is an elastic cement buffer, which mainly consists of a piston pull rod 22, an inner sleeve 23, a cylinder body 24, and an elastic cement material (not shown in the figure). The specific structure of each part constituting the leg 2 will be described in detail below in combination with the drawings.

[0039] The structure of the ball hinge 21 mentioned above is shown in Figure 5As shown, the ball joint 21 includes an upper flange 211, a ball seat 212, a ball head 214, and a ball joint rod 215. The ball seat 212 has a rectangular structure, and its top end is fixedly connected to the upper flange 211. The upper flange 211 has a fixing hole, and is fixedly installed at the bottom of the prefabricated cabin body 1 using bolts. The lower end of the ball seat 212 has a circular hole 213 that accommodates the ball head 214. The ball head 214 is embedded in the circular hole 213 and can rotate with multiple degrees of freedom. The bottom of the ball head 214 is fixedly connected to the ball joint rod 215, and a thread 216 is provided on the outer wall of the lower part of the ball joint rod 215.

[0040] The cylinder 24 that constitutes the elastic putty damper Figure 4 As shown, the cylinder body 24 mainly includes a hollow cylindrical body 241 and a lower flange 243 fixed to the bottom of the body 241. A circular hole 242 is opened at the top of the body 241 to communicate with the inner cavity, and an inner sleeve 23 is inserted into the body 241 through the circular hole 242. To limit the axial sliding of the inner sleeve 23, a limiting part protruding from the inner wall of the body 241 is also provided (not shown in the attached figure).

[0041] The inner sleeve 23 that constitutes the elastic putty buffer has the following structure: Figure 4 and Figure 10 As shown, the inner sleeve 23 includes a hollow cylindrical body 231. Circular holes 232 are formed at both the top and bottom of the cylindrical body 231, connecting to the inner cavity. The piston rod 22 is placed within the inner cavity of the cylindrical body 231 and can slide axially along the cylindrical body 231. A limiting boss 233 protruding from the outer wall of the lower part of the cylindrical body 231 is provided. During the upward sliding of the inner sleeve 23 along the inner cavity of the cylinder 24, the limiting part on the inner wall of the cylinder 24 can limit the limiting boss 233, preventing the inner sleeve 23 from dislodging from the cylinder 24. A limiting ring 234 is formed at the top of the cylindrical body 231. The limiting ring 234 limits the upward sliding of the piston rod 22, preventing the piston rod 22 from dislodging from the inner sleeve 23. To facilitate the assembly of the piston rod 22, in this embodiment, the inner sleeve 23's cylinder 231 is designed as a spliced ​​structure, that is, the cylinder 231 is made up of two semi-cylindrical structures spliced ​​together.

[0042] The structure of the piston rod 22 constituting the elastic putty buffer is as follows: Figures 6 to 9 As shown, the piston rod 22 is assembled from a ball hinge retainer and a spring sleeve in a detachable manner. The ball hinge retainer is mainly used to fix the ball hinge rod 215 of the ball hinge 21, and the spring sleeve is mainly used to accommodate the elastic deformation component. In this embodiment, the elastic deformation component is a disc spring 228. The disc spring 228 can withstand a large load in a small space. Compared with other types of springs, the disc spring 228 has a larger deformation energy per unit volume and has good buffering and shock absorption capabilities. Especially when multiple disc springs are used in a stacked combination, the effect of absorbing impact and dissipating energy is more significant due to the surface friction resistance.

[0043] Continuing the above description, the structure of the ball hinge fixing cylinder is shown in Figure 6 and Figure 7 The ball hinge fixing cylinder includes a disc body 222 in the middle, the top of the disc body 222 is provided with a hollow fixing sleeve 221, the top of the fixing sleeve 221 is open and the inner wall is provided with threads 223, the outer diameter of the fixing sleeve 221 is smaller than the outer diameter of the disc body 222. A cylindrical body is provided at the bottom of the disc body 222, the outer diameter of the cylindrical body is smaller than the outer diameter of the disc body 222, threads 225 are provided on the outer side wall of the cylindrical body, and the bottom of the cylindrical body is closed to form a bottom plate 224 limiting the top of the butterfly spring 228. The spring cylinder structure is shown in Figure 8 , including a hollow cylinder body 226 penetrating up and down, two levels of steps are formed on the inner wall of the cylinder body 226, which divides the inner cavity of the cylinder body 226 into an upper cavity and a lower cavity in communication, the inner diameter of the upper cavity is larger than that of the lower cavity, threads are provided on the inner wall of the upper cavity, and the cylindrical body of the ball hinge fixing cylinder is connected by threads in the upper cavity. The step on the inner wall of the lower cavity forms a limiting ring 227, the butterfly spring 228 is put in from the open end of the upper cavity, and the limiting ring 227 limits the bottom of the butterfly spring 228. As shown in Figure 9 , after the ball hinge fixing cylinder and the spring cylinder are assembled, the bottom plate 224 of the cylindrical body of the ball hinge fixing cylinder limits the top of the butterfly spring 228.

[0044] In this embodiment, the elastic cement buffer plays a dual role of buffering and energy absorption and damping, and has more advantages in damping and buffering performance and service life compared with conventional hydraulic buffers, rigid spring buffers and vulcanized rubber buffers. The elastic cement material filled in the inner cavity of the cylinder body 24 is a material made of the viscoelasticity, flowability and volume compressibility of unvulcanized rubber, mainly composed of organic silicon polymer compounds, fillers, pressure-resistant agents, plasticizers, coloring agents and other chemical components. When selecting organic silicon polymer compounds, flowability and compressibility should be considered, such as hydrocarbon-based silicon oil or mixing type silicone rubber. The elastic cement material flows in the closed cylinder body 24 and pushes the butterfly spring 228 to deform. When the material flows, damping force is formed through the damping hole, thereby playing a role of energy absorption in both tension and compression, reducing acceleration, and supporting the prefabricated cabin body 1 due to the internal pressure and rigidity.

[0045] When determining the number of legs 2 at the bottom of the prefabricated cabin body 1, the weight of a single prefabricated cabin body 1 designed and the wind speed requirement of the construction site can be considered. For example, a prefabricated cabin body 1 with a size of 9*3*3m has a total weight of about 15T, a preliminary calculation of the initial buffer force is 22kN, the maximum resistance force is 30kN, the stroke is 100mm, the energy absorption rate is 70%, and 12 legs 2 are installed at the lower part of each prefabricated cabin body 1 to meet the design requirements.

[0046] The legs 2 in this embodiment are a support and vibration reduction structure of the prefabricated cabin body 1, which has multiple functions such as support, roll reduction, anti-tilt, and low-frequency vibration. The spherical hinge 21 is fixed to the bottom of the prefabricated cabin body 1 through the upper flange 211, which has the characteristics of multi-degree-of-freedom rotation and can slide horizontally. Not only can it prevent the piston rod 22 of the buffer from bending, but also it can slowly restore the tilted prefabricated cabin body 1 connected to the upper flange 211 to a horizontal state after the external load is eliminated. When installing the legs 2, the upper flange 211 is bolted or directly welded to the bottom of the prefabricated cabin body 1. When transporting the prefabricated cabin body 1, the lower flange 243 is directly fixed to the vehicle body 4, which can provide vibration reduction and buffering effect during transportation. After being transported to the construction site, the lower flange 243 is separated from the vehicle body 4, the prefabricated cabin body 1 is hoisted to the placement area, and the ground does not need to be constructed with foundation, and the lower flange 243 can be directly fixed to the ground with a pin.

[0047] As shown in Figure 11 , when the transportation is relatively smooth, the prefabricated cabin body 1 does not tilt, the spherical hinge rod 215 of the spherical hinge 21 of the leg 2 remains vertical, the gravity of the prefabricated cabin body 1 is transmitted to the vehicle through the leg 2, and the leg 2 only provides support force at this time. However, when the road condition is poor and the vehicle bounces severely, or when the prefabricated cabin body 1 is placed in the construction site and encounters strong wind or ground subsidence, causing it to tilt (as shown in the upper figure of Figure 11 ), the tilted prefabricated cabin body 1 will offset and rotate the spherical hinge 21, and the buffer will move with the prefabricated cabin body 1 at this time. In addition, by utilizing the multi-degree-of-freedom working characteristics of the spherical hinge 21, on the one hand, the consistency of the prefabricated cabin body 1 can be maintained, and the hard pipe rupture caused by unevenness between different positions can be avoided, and on the other hand, the tilt vibration of the prefabricated cabin body 1 caused by external factors can be reduced, so that the prefabricated cabin body 1 can quickly recover to the horizontal state as shown in the lower figure of Figure 11 . From Figure 11As can be seen in the upper drawing of the ball hinge 21, the prefabricated cabin body 1 at the top of the ball hinge 21 is inclined to the left, so that the piston pull rod 22 of the left buffer moves downward, the piston pull rod 22 here will provide upward supporting force for the ball hinge 21, and conversely, the piston pull rod 22 of the right buffer is pulled outward, the piston pull rod 22 here will provide downward pulling force for the ball hinge 21, both the supporting force and the pulling force are transmitted to the prefabricated cabin body 1 through the ball hinge 21, so that the prefabricated cabin body 1 can quickly recover to the horizontal state, ensuring that the prefabricated cabin body 1 has the stability of horizontal work, and improving the anti-inclination and anti-vibration capability of the electrical equipment module in the prefabricated cabin body 1.

[0048] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping prefabricated cabin, characterized by: The prefabricated cabin body is provided with a surrounding structure on the outer side of the lower part of the prefabricated cabin body.

2. The damping prefabricated cabin according to claim 1, characterized in that The surrounding structure is formed by surrounding windproof and dustproof plates.

3. The damping prefabricated cabin according to claim 2, characterized in that: The ball hinge comprises an upper flange, a ball seat, a ball head and a ball hinge rod.

4. The damping prefabricated cabin according to claim 1, characterized in that: The outer side wall of the lower part of the ball hinge rod is provided with threads.

5. The damping prefabricated cabin according to claim 4, characterized in that: The buffer is an elastic cement buffer.

6. The damping prefabricated cabin according to claim 1, characterized in that: The elastic cement buffer comprises a piston pull rod, an inner sleeve, a cylinder and an elastic cement material.

7. The damping prefabricated cabin according to claim 6, characterized in that: The cylinder is hollow and provided with a lower flange at the bottom. The inner sleeve is a hollow structure with two open opposite ends, is embedded in the cylinder and can axially slide relative to the cylinder.

8. The damping prefabricated cabin according to claim 7, characterized in that: The piston pull rod is placed in the inner sleeve and can axially slide along the inner sleeve, and the cavity at the lower part of the piston pull rod is filled with the elastic cement material.

9. The damping prefabricated cabin according to claim 8, characterized in that: The piston pull rod comprises a ball hinge fixing cylinder and a spring cylinder.

10. The vibration-damping prefabricated cabin according to claim 9, characterized in that: The ball hinge fixing cylinder comprises a disc body, a hollow fixing sleeve is arranged at the top of the disc body, threads are arranged on the inner wall of the fixing sleeve, and the outer diameter of the fixing sleeve is smaller than the outer diameter of the disc body. The disc body is provided with a cylindrical body at the bottom, the outer diameter of the cylindrical body is smaller than the outer diameter of the disc body, threads are arranged on the outer side wall of the cylindrical body, and the bottom of the cylindrical body is closed. The spring cylinder comprises a cylinder body, the inner cavity of the cylinder body is divided into an upper cavity and a lower cavity which are communicated, the inner diameter of the upper cavity is larger than the inner diameter of the lower cavity, threads are arranged on the inner wall of the upper cavity, the cylindrical body of the ball hinge fixing cylinder is arranged in the upper cavity, a limiting ring is formed on the inner wall of the lower cavity, the limiting ring limits the bottom of the butterfly spring, and the bottom of the cylindrical body limits the top of the butterfly spring. The inner sleeve comprises a cylinder body which is formed in a split structure, a limiting ring is formed at the top of the cylinder body, and the limiting ring limits the disc body of the piston pull rod. A limiting boss is formed on the outer wall of the lower part of the cylinder body, and a limiting part is arranged on the inner wall of the cylinder, which limits the limiting boss.

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