Mounting and fixing structure under special conditions

Abstract

The utility model discloses a mounting and fixing structure under special conditions, which comprises a mounting and fixing structure component arranged in a mounting and fixing base without mounting holes on a flange surface; the bottom of the mounting and fixing structure assembly can move in the mounting and fixing base in the vertical direction and the horizontal direction. The top of the mounting and fixing structure assembly is used for mounting external equipment; and the C-shaped clamp assembly is used for fixing the mounting and fixing structure assembly and the mounting and fixing base. The utility model has the advantages of novel structure and strong practicability. And the practical engineering application problem of the mounting and fixing structure under special conditions is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment installation and fixing structures under special conditions, and more specifically to an installation and fixing structure under special conditions. Background Technology

[0002] However, under special conditions (such as ship decks), when there are no flange mounting holes or the mounting holes cannot be used, designing special structural forms to achieve reliable installation and fixation of equipment becomes a practical need for solving actual engineering applications.

[0003] The following are existing bases without mounting holes: Figure 1 As shown, the flange face of the mounting base has no mounting connection holes. How to install and fix structural components on this base to achieve specific functions has become a research direction for those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide an installation and fixing structure under special conditions, in order to solve the technical problems existing in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An installation and fixing structure under special conditions, comprising:

[0007] The mounting and fixing structure assembly is disposed within a mounting and fixing base without mounting holes on the flange face;

[0008] The bottom of the mounting and fixing structure assembly can be displaced in both the vertical and horizontal directions within the mounting and fixing base;

[0009] The top of the mounting and fixing structure assembly is used to mount external devices;

[0010] The C-clamp assembly is used to fix the mounting and fixing structure assembly and the mounting and fixing base.

[0011] In some embodiments, the mounting and fixing structure assembly includes:

[0012] The column weldment has a hollow structure and is provided with several symmetrically arranged first notches.

[0013] A movable column weldment is movably disposed at the bottom of a vertical column weldment; the lower end of the movable column weldment is provided with a sloping conical surface.

[0014] Nut ring, wherein the nut ring is built into the hollow structure of the column weldment;

[0015] The rotating shaft is built into the column weldment, and is connected to the nut ring thread. The bottom of the rotating shaft is fixedly connected to the movable column weldment, and the top of the rotating shaft is opposite to the first notch. The head of the rotating shaft is provided with several pairs of through-hole insertion interfaces.

[0016] A pivot rod is used to be inserted into the connector through the first notch;

[0017] The slider has an inclined surface at one end and a slider cover at the other end. The slider is set at the bottom of the column weldment through the end cover. The inclined conical surface at the lower end of the movable column weldment cooperates with the inclined conical surface of the slider. The rotation of the shaft drives the axial movement of the movable column weldment, which in turn drives the slider and slider cover to move radially along the space formed by the end cover and the bottom of the column weldment, forming a tight fit with the inner wall of the mounting base.

[0018] In some embodiments, the head of the rotating shaft is provided with two rows of plug interfaces, which are staggered with each other.

[0019] In some embodiments, the inclined conical surfaces of the movable column weldment are provided in multiple sets and arranged in a ring; the number of sliders corresponds to the number of inclined conical surfaces of the movable column weldment.

[0020] In some embodiments, the slider cover is fixed to the slider by screws; the slider cover is made of polytetrafluoroethylene.

[0021] In some embodiments, the C-clamp assembly includes a C-clamp, a screw, and a nut. The screw passes through the C-clamp fixing hole of the column weldment, and by rotating the screw, it presses against the flange face of the mounting and fixing structure assembly to form a clamping and fixing with the lower end face of the mounting and fixing base flange.

[0022] In some embodiments, an anti-reverse structure is also included, which includes a fixed shaft, a flat washer, a spring washer, and a nut. The fixed shaft is inserted into the insertion interface of the rotating shaft and locked by the spring washer and the nut to restrict the rotating shaft from reversing.

[0023] In some embodiments, the head diameter of the fixed shaft is larger than the shaft body diameter of the fixed shaft, the shaft body diameter of the fixed shaft is adapted to the diameter of the insertion interface, and a through hole for threading a pull rope is provided on the head diameter of the fixed shaft.

[0024] The advantages of this utility model compared with the prior art are:

[0025] This utility model has a novel structure and strong practicality. It solves the practical engineering application problem of installation and fixing structures under special conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the installation and fixing base in the prior art;

[0027] Figure 2 Schematic diagram of the mounting and fixing structural components installed on the mounting and fixing base;

[0028] Figure 3 Schematic diagram of the mounting and fixing structure components;

[0029] Figure 4 Schematic diagram of the column welding structure;

[0030] Figure 5 Schematic diagram of the movable column weldment structure;

[0031] Figure 6 Schematic diagram of the rotating shaft structure;

[0032] Figure 7 Schematic diagram of nut ring structure;

[0033] Figure 8 Schematic diagram of slider and slider cover structure;

[0034] Figure 9 This is a schematic diagram of a C-clamp structure;

[0035] Figure 10 Schematic diagram of the rotating shaft structure;

[0036] Figure 11 Schematic diagram of the anti-reverse rotation structure.

[0037] Illustration: 1- Mounting base, 2- Mounting structure component, 3- C-clamp assembly, 4- Rotating shaft, 5- Column weldment, 6- Movable column weldment, 7- Rotating shaft, 8- Nut ring, 9- Slider, 10- Slider cover, 11- End cover, 12- C-clamp, 13- Screw, 14- Nut, 15- Fixed shaft, 16- Flat washer, 17- Spring washer, 18- Nut. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0043] The following will combine Figures 1-11 This application provides a detailed description of an installation and fixing structure under specific conditions, as described in its embodiments. It is important to note that the following embodiments are merely illustrative and do not constitute a limitation thereof.

[0044] Example 1:

[0045] See Figure 1-11 As shown, an installation and fixing structure under special conditions includes: an installation and fixing structure assembly 2 and a C-clamp assembly 3. The installation and fixing structure assembly 2 is disposed within an installation and fixing base 1 without mounting holes on the flange face. The bottom of the installation and fixing structure assembly 2 can be displaced vertically and horizontally within the installation and fixing base 1. The top of the installation and fixing structure assembly 2 is used to install external equipment. The C-clamp assembly 3 is used to fix the installation and fixing structure assembly 2 and the installation and fixing base 1.

[0046] Install the fixed base 1 as follows Figure 1 As shown, for flanges without mounting and connection fixing holes, the design utilizes the inner wall hole of the base to fit and limit the fixing structure with the long hole shaft of the inner wall hole of the base. The fitting length is determined by H0. The designed structure has a radially adjustable diameter size to compensate for fitting errors and machining errors, achieving the goal of tight fitting with diameter D0, thereby improving reliability and reducing vibration.

[0047] By utilizing the upper flange plane of the mounting base 1, the design structure is fitted and pressed to limit the movement of the upper flange plane of the mounting base 1, thereby restricting the degree of freedom on this surface.

[0048] The degree of freedom of the fixed mounting base 1 is restricted by two surfaces, one of which is an elongated hole; the friction force pressing against the two surfaces restricts rotation, and a rotation-restricting structure is designed on the additional mounting structure to achieve complete fixation of the mounting structure.

[0049] In some embodiments, the mounting and fixing structure assembly 2 includes: a column weldment 5, a movable column weldment 6, a nut ring 8, a rotating shaft 7, a rotating shaft rod 4, and a slider 9. The column weldment 5 has a hollow structure; several symmetrically arranged first notches are provided on the column weldment 5; the movable column weldment 6 is movably disposed at the bottom of the column weldment 5; the lower end of the movable column weldment 6 has a sloping conical surface; the nut ring 8 is built inside the hollow structure of the column weldment 5; the rotating shaft 7 is built inside the column weldment 5, the rotating shaft 7 is threadedly connected to the nut ring 8, and the bottom of the rotating shaft 7 is fixedly connected to the movable column weldment 6. The top of 7 is opposite to the first notch; the head of the rotating shaft 7 is provided with several pairs of through-hole insertion interfaces for insertion into the insertion interfaces through the first notch; one end of the slider 9 is provided with an inclined surface, and the other end is provided with a slider cover 10. The slider 9 is provided at the bottom of the column weldment 5 through the end cover 11. The inclined conical surface at the lower end of the movable column weldment 6 cooperates with the inclined conical surface of the slider 9. The rotation of the rotating shaft 7 drives the axial movement of the movable column weldment 6, driving the slider 9 and the slider cover 10 to move radially along the space formed by the end cover 11 and the bottom of the column weldment 5, forming a tight fit with the inner wall of the mounting base 1.

[0050] After the installation and fixing of the mounting and fixing structure component 2 and the mounting and fixing base 1 are fixedly installed, the following is the result: Figure 2 Show.

[0051] a) Insert the lower end of the mounting and fixing structure component 2 into the elongated hole of the mounting and fixing base 1;

[0052] b) Rotate the rotating shaft 4 by hand to make a circular motion. The radially adjustable slider 9 at the lower end of the mounting and fixing structure component 2 moves in the direction of the circumferential diameter. The radially adjustable slider 9 generates radial pressure on the inner wall of the base with the elongated hole of the mounting and fixing base 1.

[0053] c) Place the lower end face of the C-clamp assembly 3 against the lower end face of the flange of the mounting base 1, rotate the head of the screw 13 of the C-clamp assembly 3, the screw 13 of the C-clamp assembly 3 will rotate, and the screw 13 of the C-clamp assembly 3 will press down on the flange face of the mounting structure assembly 2 to clamp it.

[0054] d) Movement path:

[0055] The rotational motion applied to the rotating shaft 4 → produces linear motion on the rotating shaft 7 and the movable column weldment 6 → produces radial linear motion on the slider 9 and the slider cover 10.

[0056] See Figure 3 The installation and fixing structure component 2 is the main part of the entire structure, which is mainly assembled from the rotating shaft 4, the column welded part 5, the movable column welded part 6, the rotating shaft 7, the nut ring 8, the slider 9, the slider cover 10, the end cover 11, etc.

[0057] The upright weldment 5 and the movable column weldment 6 are welded together to form two integral parts, which are then assembled with the remaining parts to form the installation and fixing structure assembly 2. Except for the slider cover 10, which is made of polytetrafluoroethylene, the other parts are made of metal.

[0058] First, install the nut ring 8 into the column welding part 5 for fixation;

[0059] Then, pass the rotating shaft 7 and screw 13 through the nut ring 8 and connect them to the movable column weldment 6 to form a whole;

[0060] The lower end face of the movable column weldment 6 is designed as an inclined cone, and the joint surface between the slider 9 and the lower end face of the movable column weldment 6 is designed as an inclined cone. The two parts are paired and assembled.

[0061] The slider cover 10 is made of polytetrafluoroethylene (PTFE). When the slider cover 10 moves radially to press the inner wall of the base, the self-lubricating property of PTFE reduces sliding friction. Since PTFE is a plastic, it can be slightly deformed and can fit tightly with the inner surface of the mounting base 1.

[0062] Finally, end cap 11 is installed to seal the surface, forming two sliding surfaces. One sliding surface is the mating surface between slider 9 and the lower end face of movable column weldment 6, and the other sliding surface is the mating surface between slider 9 and end cap 11. The mating surfaces between slider cap 10 and the lower end face of movable column weldment 6, and between slider cap 10 and end cap 11, are self-lubricating sliding surfaces.

[0063] After rotating the rotating shaft bar 4, the rotating shaft 7 rotates, and the movable column welded part 6 moves up and down. As a result, the slider 9 and the slider cover 10 move radially, applying and removing pressure in the radial direction.

[0064] The column welding component 5 is a whole component assembled and welded from multiple metal parts. After welding, it is corrected and surface treated. After the surface treatment, it is assembled with other parts to form the installation and fixing structure component 2.

[0065] See Figure 4The flange D2 of the column weldment 5 is the mating surface with the flange of the mounting base 1. The fixing hole of the C-clamp 12 is for the C-clamp 12 screw 13 to press down on the flange surface of the mounting and fixing structure component 2 for clamping and fixing. It is also the positioning hole of the C-clamp component 3. The fixing hole of the C-clamp 12 is a stepped blind hole.

[0066] Flange D3 of column weldment 5 is the mounting surface for external installation equipment, and flange D4 of column weldment 5 is the mounting hole for external installation equipment.

[0067] The first notch on the round tube of the column weldment 5 is for the operating space where the rotating shaft 4 can be inserted and rotated, and it also facilitates the wiring of external equipment to be led out from the round tube of the column weldment 5.

[0068] See Figure 5 The movable column weldment 6 is a whole component made of multiple metal parts. After welding, it is corrected and then assembled with other parts to form the installation and fixing structure component 2.

[0069] The diameter D5 of the movable column weldment 6 is the thread size that mates with the rotating shaft 7. After the rotating shaft 7 is screwed into D5, thread sealant is applied and cured to form a single unit, allowing the movable column weldment 6 and the rotating shaft 7 to rotate together in the same direction. The sliding fit slope of the movable column weldment 6 is the sliding fit surface with the slider 9.

[0070] See Figure 6 The rotating shaft 7 is a shaft-type part. The threaded part of the rotating shaft 7 is matched with the internal threads of the nut ring 8 and the movable column weldment 6. The thread of the rotating shaft 7 is a fine thread to prevent backing. The diameter D6 surface has two rows of insertion interfaces, which facilitate the insertion and rotation of the rotating shaft rod 4. The two rows of insertion interfaces form staggered openings to facilitate adjustment at any angle.

[0071] See Figure 7 The nut ring 8 is the motion transmission carrier in the installation and fixing structure component 2 to realize the radial linear motion of the slider 9 and slider cover 10 from the circumferential rotation motion starting from the rotating shaft bar 4.

[0072] The diameter D7 of the nut ring 8 is matched with the inner diameter of the round tube of the column weldment 5. The external screw passes through the corresponding hole in the round tube of the column weldment 5 and connects with the screw hole n-M1 of the nut ring 8 to fix the nut ring 8.

[0073] The nut ring 8 thread M is a thread that matches the rotating shaft 7, and the rotating shaft 7 can rotate through the thread.

[0074] See Figure 8 The slider 9 and slider cover 10 are important functional components for realizing radial linear motion. The slider 9 and slider cover 10 are embedded in the corresponding positions of the movable column weldment 6. Each slider 9 is designed with a strip hole, through which a pin passes. The slider 9 can only perform reciprocating linear motion, and the range of motion is determined by the size of the strip hole of the slider 9.

[0075] The slider cover 10 is fixed to the slider 9 by screws. The slider cover 10, being made of polytetrafluoroethylene (PTFE), a plastic with self-lubricating properties and the ability to undergo slight deformation, better facilitates the installation and fixing of the structural component 2.

[0076] The downward linear movement of the movable column weldment 6 causes the inclined surface on the movable column weldment 6 to press down on the inclined surface of the slider 9, pushing the slider 9 outward and generating an outward radial linear movement.

[0077] When the movable column weldment 6 moves upward in a straight line, the force applied to the inclined surface of the slider 9 is unloaded, and the reaction force of the inner wall of the mounting base 1 against the slider cover 10 pushes the slider 9 inward, causing the slider 9 to produce an inward radial straight line movement.

[0078] End cap 11 is a functional structural component for facilitating the assembly of slider 9 and slider cover 10. The inner surface of end cap 11 is the inner surface that slides with slider 9 and slider cover 10. Yellow grease is applied to the sliding inner surface to increase lubrication.

[0079] See Figure 9 The C-clamp assembly 3 mainly consists of a C-clamp 12, a screw 13, and nuts 14. The clamping surface 2 of the C-clamp 12 rests against the lower end face of the flange of the mounting base 1. The screw 13 of the C-clamp assembly 3 passes through the internal thread of the C-clamp 12. Rotating the head of the screw 13 causes it to move downwards vertically, pressing it against the flange face of the mounting structure assembly 2. The clamping surface 1 of the C-clamp 12 engages with the flange face of the mounting structure assembly 2 for clamping. The spacing of the screws 13 is equal to the spacing of the fixing holes of the C-clamp 12 on the flange D2 of the column weldment 5. The fixing holes of the C-clamp 12 on the flange D2 of the column weldment 5 are also the clamping holes of the C-clamp assembly 3. Two nuts 14 are designed on the screw 13 of the C-clamp assembly 3 as an anti-loosening measure.

[0080] See Figure 10 The rotating shaft 4 is a component that applies external rotational force. It can rotate by inserting the rotating shaft 4 into the upper and lower rows of insertion interfaces with a diameter D6 of the rotating shaft 7.

[0081] See Figure 11 To prevent the shaft 7 from reversing after the external force applied to the shaft rod 4 is removed, the design of an anti-reversal structure is of engineering significance. The anti-reversal structure includes a fixed shaft, a flat washer, a spring washer, and a nut. The fixed shaft is inserted into the insertion interface of the shaft 7 and locked by the spring washer and the nut to restrict the shaft 7 from reversing.

[0082] After the rotating shaft 7 is rotated into position, the threaded part of the fixed shaft is inserted into the round hole of the rotating shaft 7. The larger end of the fixed shaft contacts the side wall of the opening of the mounting and fixing structure component 2. The mating surface between the side wall and the fixed shaft limits and prevents the rotating shaft 7 from reversing. The threaded part of the fixed shaft passes through the exposed part of the rotating shaft 7 and is then tightened with a flat washer, a spring washer, and a nut in sequence.

[0083] In some embodiments, the head diameter of the fixed shaft is larger than the shaft body diameter, the shaft body diameter is adapted to the diameter of the insertion interface, and a through hole for threading a pull rope is provided on the head diameter of the fixed shaft. If, after the fixed shaft is installed, the large-diameter section of the head of the fixed shaft does not contact the side wall of the first notch of the column weldment 5, or the distance between them is too great, anti-reverse rotation can be achieved by threading a rope through the through hole in the head of the fixed shaft located on both sides and tightening it.

[0084] The bottom end cover 11 of the mounting and fixing structure component 2 can be opened, allowing for the repair and replacement of structures such as the slider 9 and slider cover 10.

[0085] Except for the slider cover 10, which is made of polytetrafluoroethylene (PTFE), all other components are made of metal. The internal metal materials are electroplated, while the exposed metal surfaces are painted to improve aesthetics and corrosion resistance. All mounting screws are made of stainless steel 304 or 31615. (Fixed shaft screws are also included.)

[0086] It can solve the problem of equipment installation and fixing structure under special conditions in engineering applications, while meeting the requirements of equipment protection against salt spray, mildew, damp heat, rain and water splash, and has a structure with high wind resistance.

[0087] The above description is only a preferred embodiment of the present utility model and is used to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special-condition installation fixing structure characterized by comprising: The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

2. The installation fixing structure under a special condition according to claim 1, characterized in that, The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

3. The installation fixing structure under a special condition according to claim 2, characterized in that, The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

4. The installation fixing structure under a special condition according to claim 2, characterized in that, The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

5. The installation fixing structure under a special condition according to claim 2, characterized by The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

6. The installation fixing structure under a special condition according to claim 1, characterized by The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

7. The installation fixing structure under a special condition according to claim 2, characterized by The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device.

8. The installation fixing structure under special conditions according to claim 7, characterized in that, The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external device. The utility model relates to a kind of installation fixed structure assembly and installation fixed base, which are used for installing external

Images