Pre-embedded strong and weak electricity box anti-deformation inner supporting frame

Abstract

The utility model provides an anti-deformation inner supporting frame for a pre-embedded strong and weak electricity box, and belongs to the technical field of building construction. The pre-embedded strong and weak electricity box anti-deformation inner supporting frame comprises an electricity box, a movable expansion assembly, an inner side fixed angle supporting assembly and an outer side movable angle supporting assembly. The movable expansion assemblies are arranged in the electric box, the movable expansion assemblies can support eight corners in the electric box, the four corners of the inner side fixed-angle supporting assemblies can support the four corners of the inner sides of the movable expansion assemblies, and the number of the outer side movable-angle supporting assemblies is two. Through three-position adjustment of the inner side fixed angle supporting assembly and the two outer side movable angle supporting assemblies, the eight angles of the movable expansion assemblies are opened to support the eight angles in the electricity box, supporting of the interior of the electricity box is completed, supporting of the interior of the electricity box can be completed through three-position supporting adjustment of the pre-embedded strong and weak electricity box anti-deformation inner supporting frame, and the anti-deformation effect is good. And the manpower consumption is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to an anti-deformation inner support frame of a pre-buried strong and weak electricity box. Background Art

[0002] Traditional pre-buried power and weak current boxes use internal supports to prevent deformation, usually made of wood or hard foam, to fill the space inside the distribution box to protect the box from deformation. However, this method is for one-time use and will generate a lot of garbage after demolding and cleaning.

[0003] In the related art, the anti-deformation inner support frame of the pre-buried strong and weak electricity boxes adopts an adjustable inner support frame. However, when supporting the electric box, this kind of inner support frame needs to adjust each support point individually to against the inside of the electric box. Usually, the five surfaces in the box (except the box door) require at least five adjustable supports. If two supports are used on one surface, more support points need to be adjusted, and the hands are easily fatigued when adjusting the supports in the box. Therefore, how to reduce the number of supports that need to be adjusted in the electric box to reduce manpower consumption has become a technical problem that needs to be solved.

[0004] How to invent a pre-buried anti-deformation inner support frame for strong and weak current boxes to improve these problems has become an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a pre-buried anti-deformation internal support frame for strong and weak electric boxes. The pre-buried anti-deformation internal support frame for strong and weak electric boxes can complete the support inside the box by adjusting the supports at three places, effectively reducing manpower consumption.

[0006] The utility model is achieved in this way:

[0007] A deformation-proof inner support frame for pre-buried strong and weak electric boxes comprises an electric box, a movable expansion component, an inner fixed angle support component and an outer movable angle support component.

[0008] The movable expansion component is arranged inside the electrical box, and the movable expansion component can support the eight corners inside the electrical box. The four corners of the inner fixed-angle support component can support the four corners inside the movable expansion component. The outer movable corner support component is arranged in two groups. The two groups of the outer movable corner support components are respectively arranged at the upper end and the lower end of the outer side of the inner fixed-angle support component. The two groups of the outer movable corner support components respectively support the four corners outside the movable expansion component.

[0009] In a specific embodiment, the movable expansion component includes an outer expansion frame, an inner expansion frame and a short telescopic rod. The outer expansion frame and the inner expansion frame have the same structure. Both the outer expansion frame and the inner expansion frame can expand outward. The side walls of the four corners of the outer expansion frame and the inner expansion frame are connected by the short telescopic rod. The outer expansion frame abuts against the four corners of the outside of the electrical box, and the inner expansion frame abuts against the four corners of the inside of the electrical box.

[0010] In a specific embodiment, the outer expansion frame includes a top block, a long telescopic rod and a triangular guide frame, the top block and the long telescopic rod are each provided with four, the four long telescopic rods are connected end to end in sequence using the top block, and a square is formed between the four long telescopic rods, the top block of the outer expansion frame and the top block of the corresponding inner expansion frame are fixedly connected using the short telescopic rod, the triangular guide frame is fixedly connected to the inner corners of the four outer expansion frames, the four corners of the inner fixed angle support assembly can resist the triangular guide frame on the inner expansion frame, and the four corners of the outer movable angle support assembly can resist the triangular guide frame on the outer expansion frame.

[0011] In a specific embodiment, the inner fixed-angle support assembly includes a mounting frame, a guide telescopic rod, a fixed-angle support rod and a two-way adjustment piece. The mounting frame and the guide telescopic rod are each provided in two pieces, and the two mounting frames are symmetrically arranged. The two guide telescopic rods and the two-way adjustment piece are both arranged between the two mounting frames. The two guide telescopic rods and the two-way adjustment piece are arranged in a triangular shape, and the two guide telescopic rods are located on both sides of the two-way adjustment piece. The fixed-angle support rods are respectively rotatably connected to the two ends of the outer side of the mounting frame, and the end of the fixed-angle support rod is provided in a hemispherical shape, so that the end of the fixed-angle support rod can resist the triangular guide frame on the inner expansion frame.

[0012] In a specific embodiment, the mounting frame includes a side mounting plate, a top mounting plate and a hinged base, the top mounting plate is fixedly connected to the side wall of the outer end of the side mounting plate, the outer movable angle support assembly is fixedly connected to the outer side wall of the side mounting plate, the hinged base is symmetrically arranged on the outer side of the top mounting plate, the hinged base is deflected inwardly, and the fixed angle support rod is rotatably connected to the hinged base.

[0013] In a specific embodiment, the fixed-angle support rod includes a rotating block, a supporting rod body and a pin shaft, the supporting rod body is fixedly connected to the rotating block, and the rotating block is rotatably linked to the hinge base via the pin shaft.

[0014] In a specific embodiment, the bidirectional adjustment member includes an internal threaded sleeve and a bidirectional adjustment screw. The internal threaded sleeve is provided in two numbers. The two internal threaded sleeves are respectively fixedly connected to the two mounting frames. Both ends of the bidirectional adjustment screw are respectively threadedly connected to the two internal threaded sleeves. The thread directions of the two ends of the bidirectional adjustment screw are opposite.

[0015] In a specific embodiment, the outer movable corner support assembly includes a one-way adjustment part, a universal ball joint and a movable support rod, the one-way adjustment part is arranged on the outer side wall of the mounting frame, the universal ball joint is fixedly connected to the two ends of the outer side of the one-way adjustment part, the movable support rod is fixedly connected to the universal ball joint, the end of the movable support rod is arranged to be hemispherical, and the end of the movable support rod can resist the triangular guide frame on the outer expansion frame.

[0016] In a specific embodiment, the one-way adjusting member includes a side connecting seat, a side fixing plate, a sliding rod, a movable seat and a one-way tightening bolt. The side connecting seat is fixedly connected to the outer wall of the mounting frame away from one end of the fixed angle support rod. The sliding rod and the side fixing plate are provided in two, and the two side fixing plates are respectively fixedly connected to the outer wall of the mounting frame close to one end of the fixed angle support rod. One end of the sliding rod is fixedly connected to the side fixing plate, and the other end of the sliding rod is fixedly connected to the side connecting seat. Both ends of the movable seat are respectively slidably connected to the sliding rod, and the one-way tightening bolt thread passes through the side connecting seat. The end of the one-way tightening bolt presses against the side of the movable seat close to the side connecting seat, and the universal ball joint is fixedly connected to the side of the movable seat away from the side connecting seat.

[0017] In a specific embodiment, the side connecting seat includes a side connecting plate and a reinforcing tube, the reinforcing tube is fixedly passed through the side connecting plate, and the one-way tightening bolt threadably passes through the reinforcing tube.

[0018] The beneficial effects of the present application are as follows: when in use, the movable expansion component is placed in the electrical box, the inner fixed angle support component and the outer movable angle support component are placed in the movable expansion component, the inner fixed angle support component is adjusted to open the four corners of the inner fixed angle support component, the four corners of the inner fixed angle support component are pressed against the inner four corners of the movable expansion component, the inner fixed angle support component pushes the movable expansion component to open in the four directions of up, down, left and right until it contacts the four sides in the electrical box, and then the outer movable angle support component is adjusted to make the four corners of the two outer movable angle support components press against the outer four corners of the movable expansion component , the two outer movable corner support assemblies push the movable expansion assembly to open along the front-to-back direction until the inner and outer sides of the movable expansion assembly press the front and rear sides of the interior of the electrical box, and continue to adjust the inner fixed-angle support assembly to make the movable expansion assembly press the four sides inside the electrical box. Through the three adjustments of the inner fixed-angle support assembly and the two outer movable corner support assemblies, the eight corners of the movable expansion assembly are opened to support the eight corners inside the electrical box to complete the support of the interior of the electrical box. The pre-buried anti-deformation inner support frame of the strong and weak electrical boxes can complete the support of the interior of the electrical box by adjusting the three supports, effectively reducing manpower consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an anti-deformation inner support frame for pre-buried strong and weak electric boxes provided by the embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the structure of a movable expansion assembly is provided for an embodiment of the utility model;

[0022] Figure 3 A structural schematic diagram of an inner fixed angle support assembly is provided for an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the structure of a mounting frame is provided for an embodiment of the utility model;

[0024] Figure 5 Provided for the implementation of the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 6 A schematic diagram of the structure of an outer movable corner support assembly is provided for an embodiment of the utility model;

[0026] Figure 7 Provided for the implementation of the utility model Figure 6 Schematic diagram of the enlarged structure at point B.

[0027] In the figure: 100-electric box; 200-movable expansion assembly; 210-outer expansion frame; 211-top block; 212-long telescopic rod; 213-triangular guide frame; 220-inner expansion frame; 230-short telescopic rod; 300-inner fixed angle support assembly; 310-mounting frame; 311-side mounting plate; 312-top mounting plate; 313-hinged base; 320-guide telescopic rod; 330-fixed angle support rod; 331-rotating block; 3 32-support rod body; 333-pin shaft; 340-two-way adjustment member; 341-inner threaded sleeve; 342-two-way adjustment screw; 400-outer movable angle support assembly; 410-one-way adjustment member; 411-side connecting seat; 4111-side connecting plate; 4112-reinforcement tube; 412-side fixing plate; 413-slide rod; 414-movable seat; 415-one-way tightening bolt; 420-universal ball joint; 430-movable support rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example

[0030] See also Figures 1 to 7 The utility model provides an anti-deformation inner support frame for pre-buried strong and weak electric boxes, including an electric box 100, a movable expansion component 200, an inner fixed angle support component 300 and an outer movable angle support component 400.

[0031] See also Figure 1The movable expansion component 200 is arranged inside the electrical box 100, and the movable expansion component 200 can support the eight corners inside the electrical box 100. The four corners of the inner fixed angle support component 300 can support the four corners inside the movable expansion component 200. The outer movable corner support component 400 is arranged in two groups. The two groups of outer movable corner support components 400 are respectively arranged at the upper end and the lower end of the outer side of the inner fixed angle support component 300. The two groups of outer movable corner support components 400 respectively support the four corners outside the movable expansion component 200. When in use, the movable expansion component 200 is placed in the electrical box 100, the inner fixed angle support component 300 and the outer movable angle support component 400 are placed in the movable expansion component 200, the inner fixed angle support component 300 is adjusted to open the four corners of the inner fixed angle support component 300, and the four corners of the inner fixed angle support component 300 are pressed against the inner four corners of the movable expansion component 200, the inner fixed angle support component 300 pushes the movable expansion component 200 to open in the four directions of up, down, left and right until it contacts the four sides in the electrical box 100, and then the outer movable angle support component 400 is adjusted to make the four corners of the two outer movable angle support components 400 press against the outer four corners of the movable expansion component 200, The two outer movable corner support assemblies 400 push the movable expansion assembly 200 to open in the front-to-back direction until the inner and outer sides of the movable expansion assembly 200 press the front and rear sides of the interior of the electrical box 100, and continue to adjust the inner fixed-angle support assembly 300 to make the movable expansion assembly 200 press the four sides inside the electrical box 100. Through the three adjustments of the inner fixed-angle support assembly 300 and the two outer movable corner support assemblies 400, the eight corners of the movable expansion assembly 200 are opened to support the eight corners inside the electrical box 100, thereby completing the support for the interior of the electrical box 100. The pre-buried anti-deformation inner support frame for strong and weak electrical boxes can complete the support inside the electrical box by adjusting the support at three places, thereby effectively reducing manpower consumption.

[0032] See also Figure 1 to Figure 2The movable expansion assembly 200 includes an outer expansion frame 210, an inner expansion frame 220 and a short telescopic rod 230. The outer expansion frame 210 and the inner expansion frame 220 have the same structure. Both the outer expansion frame 210 and the inner expansion frame 220 can expand outward. The side walls of the four corners of the outer expansion frame 210 and the inner expansion frame 220 are connected by a short telescopic rod 230. The outer expansion frame 210 abuts against the four corners of the outer side of the electric box 100, and the inner expansion frame 220 abuts against the four corners of the inner side of the electric box 100. Both the outer expansion frame 210 and the inner expansion frame 220 can be expanded in four directions, namely, up, down, left, and right. The expansion of the outer expansion frame 210 and the inner expansion frame 220 in the front-to-back direction is adjusted by the expansion and contraction of the short telescopic rod 230 between the outer expansion frame 210 and the inner expansion frame 220. The outer expansion frame 210 is opened to press against the four corners of the outside of the electric box 100, and the inner expansion frame 220 is opened to press against the four sides of the inside of the electric box 100. The outer expansion frame 210 and the inner expansion frame 220 are unfolded in the front-to-back direction to press against the front and rear side walls of the electric box 100, so that the outer expansion frame 210 and the inner expansion frame 220 form pressure in two directions on the octagon inside the electric box 100 (i.e., the side walls of the four sides of the electric box 100 and the front and rear side walls of the electric box 100), and the outer expansion frame 210 and the inner expansion frame 220 maintain the stability of the electric box 100 and reduce deformation.

[0033] See also Figure 1 to Figure 2 The outer expansion frame 210 includes a top block 211, a long telescopic rod 212 and a triangular guide frame 213. The top block 211 and the long telescopic rod 212 are each set to four. The four long telescopic rods 212 are connected end to end in sequence using the top block 211 to form a square. The top block 211 of the outer expansion frame 210 and the top block 211 of the corresponding inner expansion frame 220 are fixedly connected using a short telescopic rod 230. The triangular guide frame 213 is fixedly connected to the inner corners of the four outer expansion frames 210. The four corners of the inner fixed angle support assembly 300 can resist the triangular guide frame 213 on the inner expansion frame 220, and the four corners of the outer movable angle support assembly 400 can resist the triangular guide frame 213 on the outer expansion frame 210. When the inner expansion frame 220 expands, the four corners of the inner fixed angle support assembly 300 expand, and the four corners of the inner fixed angle support assembly 300 resist the triangular guide frame 213 on the inner expansion frame 220, thereby pushing the four top blocks 211 to expand outward, and the lengths of the four long telescopic rods 212 on the inner expansion frame 220 extend as the four top blocks 211 expand. The outer expansion frame 210 is restricted by the short telescopic rods 230 and expands as the inner expansion frame 220 expands.

[0034] See also Figures 1 to 3The inner fixed angle support assembly 300 includes a mounting frame 310, a guide telescopic rod 320, a fixed angle support rod 330 and a two-way adjustment member 340. The mounting frame 310 and the guide telescopic rod 320 are both provided in two numbers. The two mounting frames 310 are symmetrically provided. The two guide telescopic rods 320 and the two-way adjustment member 340 are both provided between the two mounting frames 310. The two guide telescopic rods 320 and the two-way adjustment member 340 are arranged in a triangular shape. The two guide telescopic rods 320 are located on both sides of the two-way adjustment member 340. The fixed angle support rod 330 is rotatably connected to the two ends of the outer side of the mounting frame 310 respectively. The end of the fixed angle support rod 330 is provided in a hemispherical shape. The end of the fixed angle support rod 330 can resist the triangular guide frame 213 on the inner expansion frame 220. The two guide telescopic rods 320 and the two-way adjustment member 340 are arranged in a triangular shape to maintain the stability of the two mounting frames 310. The end of the fixed angle support rod 330 is set to be hemispherical, so that the end of the fixed angle support rod 330 can slide along the triangular guide frame 213 during the support process. The two-way adjustment member 340 is rotated, and the length of the two-way adjustment member 340 is extended. The two-way adjustment member 340 pushes the two mounting frames 310 to extend along the guide telescopic rod 320 to increase, and the two mounting frames 310 push the fixed angle support rod 330 to support the triangular guide frame 213 on the inner expansion frame 220.

[0035] See also Figures 1 to 3 The two-way adjustment member 340 includes an internal thread sleeve 341 and a two-way adjustment screw 342. Two internal thread sleeves 341 are provided. The two internal thread sleeves 341 are respectively fixedly connected to the two mounting frames 310. The two ends of the two-way adjustment screw 342 are respectively threadedly connected to the two internal thread sleeves 341. The thread directions of the two ends of the two-way adjustment screw 342 are opposite. When the two-way adjustment screw 342 is rotated, the two ends of the two-way adjustment screw 342 withdraw in the direction of the internal thread sleeve 341 through the principle of thread transmission, so that the length of the two-way adjustment member 340 increases. The internal thread sleeve 341 on the two-way adjustment member 340 pushes the mounting frame 310.

[0036] See also Figures 1 to 4 The mounting frame 310 includes a side mounting plate 311, a top mounting plate 312 and a hinged base 313. The top mounting plate 312 is fixedly connected to the side wall of the outer end of the side mounting plate 311. The outer movable corner support assembly 400 is fixedly connected to the outer wall of the side mounting plate 311. The hinged base 313 is symmetrically arranged on the outer side of the top mounting plate 312. The hinged base 313 deflects inwardly, and the fixed angle support rod 330 is rotatably connected to the hinged base 313. The side mounting plate 311 facilitates the installation of the outer movable corner support assembly 400. The top mounting plate 312 facilitates the installation of the hinged base 313. The hinged base 313 deflects inwardly, so that the fixed angle support rod 330 is obliquely against the triangular guide frame 213.

[0037] See also Figures 1 to 5The fixed angle support rod 330 includes a rotating block 331, a supporting rod body 332 and a pin 333. The supporting rod body 332 is fixedly connected to the rotating block 331, and the rotating block 331 is rotatably connected to the articulated base 313 through the pin 333. The rotating block 331 and the articulated base 313 are aligned, and the pin 333 passes through the articulated base 313 and the rotating block 331 to form a rotation connection between the rotating block 331 and the articulated base 313.

[0038] See also Figures 1 to 6 The outer movable angle support assembly 400 includes a one-way adjustment member 410, a universal ball joint 420 and a movable support rod 430. The one-way adjustment member 410 is arranged on the outer wall of the mounting frame 310. The universal ball joint 420 is fixedly connected to the two ends of the outer side of the one-way adjustment member 410. The movable support rod 430 is fixedly connected to the universal ball joint 420. The end of the movable support rod 430 is arranged to be hemispherical. The end of the movable support rod 430 can resist the triangular guide frame 213 on the outer expansion frame 210. The one-way adjusting member 410 at the upper end is adjusted, and the one-way adjusting member 410 drives the universal ball joint 420 to move upward, and the end of the movable support rod 430 gradually presses the triangular guide frame 213 at the upper end of the outer expansion frame 210, and the movable support rod 430 and the fixed angle support rod 330 push the inner expansion frame 220 and the outer expansion frame 210 to expand in the front-to-back direction. After the inner expansion frame 220 and the outer expansion frame 210 press the front and back sides of the electric box 100, the one-way adjusting member 410 at the lower end is adjusted to make the movable support rod 430 at the lower end press the triangular guide frame 213 at the lower end of the outer expansion frame 210. The movable support rod 430 is regulated by the universal ball joint 420, so that the end of the movable support rod 430 can be against the corner of the triangular guide frame 213.

[0039] See also Figures 1 to 6The one-way adjustment member 410 includes a side connecting seat 411, a side fixing plate 412, a sliding rod 413, a movable seat 414 and a one-way tightening bolt 415. The side connecting seat 411 is fixedly connected to the outer wall of the mounting frame 310 away from the end of the fixed angle support rod 330. The sliding rod 413 and the side fixing plate 412 are provided in two. The two side fixing plates 412 are respectively fixedly connected to the outer wall of the mounting frame 310 close to the end of the fixed angle support rod 330. One end of the sliding rod 413 is fixedly connected to the side fixing plate 412, and the other end of the sliding rod 413 is fixedly connected to the side connecting seat 411. Both ends of the movable seat 414 are respectively slidably connected to the sliding rod 413. The one-way tightening bolt 415 threadably penetrates the side connecting seat 411. The end of the one-way tightening bolt 415 presses against the side of the movable seat 414 close to the side connecting seat 411. The universal ball joint 420 is fixedly connected to the side of the movable seat 414 away from the side connecting seat 411. When adjusting the one-way adjusting member 410, the one-way tightening bolt 415 is rotated, the one-way tightening bolt 415 presses against the movable seat 414, the movable seat 414 slides along the slide bar 413, and the movable seat 414 drives the universal ball joint 420. The side connecting seat 411, the slide bar 413, the side fixing plate 412 and the mounting frame 310 form a whole, which improves the strength of the installation of the side connecting seat 411 and the slide bar 413 and reduces the deformation of the side connecting seat 411.

[0040] See also Figures 1 to 7 The side connection seat 411 includes a side connection plate 4111 and a reinforcement tube 4112. The reinforcement tube 4112 is fixedly passed through the side connection plate 4111, and the one-way tightening bolt 415 is threadedly passed through the reinforcement tube 4112. The reinforcement tube 4112 improves the strength of the connection between the side connection seat 411 and the one-way tightening bolt 415.

[0041] Specifically, the working principle of the pre-buried strong and weak electricity box anti-deformation inner support frame is as follows: when in use, the movable expansion component 200 is placed in the electricity box 100, the inner fixed angle support component 300 and the outer movable angle support component 400 are placed in the movable expansion component 200, and the two-way adjustment screw 342 is rotated. Through the principle of thread transmission, the two ends of the two-way adjustment screw 342 are withdrawn along the direction of the internal thread sleeve 341, so that the length of the two-way adjustment member 340 increases, and the two-way adjustment member 340 pushes the two mounting frames 310 to extend along the guide telescopic rod 320 to increase, and the two mounting frames 310 push the fixed angle support The support rod 330 supports the triangular guide frame 213 on the inner expansion frame 220, and the four fixed-angle support rods 330 resist the triangular guide frame 213 on the inner expansion frame 220, thereby pushing the four top blocks 211 to expand outward, and the lengths of the four long telescopic rods 212 on the inner expansion frame 220 extend as the four top blocks 211 expand, and the outer expansion frame 210 is restricted by the short telescopic rods 230 and expands as the inner expansion frame 220 expands, and the inner expansion frame 220 and the outer expansion frame 210 are opened in the four directions of up, down, left, and right to the four sides of the contact box 100, and then the one-way adjustment at the upper end is adjusted. The one-way adjustment member 410 drives the universal ball joint 420 to move upward, and the end of the movable support rod 430 gradually presses the triangular guide frame 213 at the upper end of the outer expansion frame 210. The movable support rod 430 and the fixed angle support rod 330 push the inner expansion frame 220 and the outer expansion frame 210 to expand in the front-to-back direction. After the inner expansion frame 220 and the outer expansion frame 210 press the front and back sides of the inside of the electric box 100, the one-way adjustment member 410 at the lower end is adjusted to make the movable support rod 430 at the lower end press the triangular guide frame 213 at the lower end of the outer expansion frame 210. Finally, continue By adjusting the two-way adjustment screw 342, the four fixed-angle support rods 330 can press the triangular guide frame 213 on the inner expansion frame 220, and then the inner expansion frame 220 and the outer expansion frame 210 can press the four sides inside the electrical box 100. Through the three-position adjustment of the inner fixed-angle support assembly 300 and the two outer movable angle support assemblies 400, the eight corners of the movable expansion assembly 200 can be opened to support the eight corners inside the electrical box 100, thereby completing the support for the interior of the electrical box 100. The pre-buried anti-deformation inner support frame for strong and weak electrical boxes can complete the support inside the electrical box by adjusting the three-position support, thereby effectively reducing manpower consumption.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pre-buried strong and weak electric box anti-deformation inner support frame, including an electric box, characterized in that: Also includes: A movable expansion component, which is disposed inside the electrical box and can support eight corners inside the electrical box; An inner fixed angle support component, the four corners of which can support the four inner corners of the movable expansion component; The outer movable corner support assembly is provided in two groups, and the two groups of the outer movable corner support assembly are respectively provided at the upper end and the lower end of the outer side of the inner fixed angle support assembly, and the two groups of the outer movable corner support assembly respectively support the four corners of the outer side of the movable expansion assembly.

2. The anti-deformation inner support frame for pre-buried strong and weak current boxes according to claim 1 is characterized in that: The movable expansion component includes an outer expansion frame, an inner expansion frame and a short telescopic rod. The outer expansion frame and the inner expansion frame have the same structure. Both the outer expansion frame and the inner expansion frame can expand outward. The side walls of the four corners of the outer expansion frame and the inner expansion frame are connected by the short telescopic rod. The outer expansion frame abuts against the four corners of the outside of the electrical box, and the inner expansion frame abuts against the four corners of the inside of the electrical box.

3. The anti-deformation inner support frame for pre-buried strong and weak current boxes according to claim 2 is characterized in that: The outer expansion frame includes a top block, a long telescopic rod and a triangular guide frame, the top block and the long telescopic rod are each provided with four, the four long telescopic rods are connected end to end in sequence using the top block, and a square is formed between the four long telescopic rods, the top block of the outer expansion frame and the top block of the corresponding inner expansion frame are fixedly connected using the short telescopic rod, the triangular guide frame is fixedly connected to the inner corners of the four outer expansion frames, the four corners of the inner fixed angle support assembly can resist the triangular guide frame on the inner expansion frame, and the four corners of the outer movable angle support assembly can resist the triangular guide frame on the outer expansion frame.

4. The anti-deformation inner support frame for pre-buried strong and weak electric boxes according to claim 3 is characterized in that: The inner fixed-angle support assembly includes a mounting frame, a guide telescopic rod, a fixed-angle support rod and a two-way adjustment piece. The mounting frame and the guide telescopic rod are each provided in two pieces, and the two mounting frames are symmetrically arranged. The two guide telescopic rods and the two-way adjustment piece are both arranged between the two mounting frames. The two guide telescopic rods and the two-way adjustment piece are arranged in a triangular shape, and the two guide telescopic rods are located on both sides of the two-way adjustment piece. The fixed-angle support rods are respectively rotatably connected to the two ends of the outer side of the mounting frame, and the end of the fixed-angle support rod is provided in a hemispherical shape, and the end of the fixed-angle support rod can resist the triangular guide frame on the inner expansion frame.

5. The anti-deformation inner support frame for pre-buried strong and weak electric boxes according to claim 4 is characterized in that: The mounting frame includes a side mounting plate, a top mounting plate and a hinged base, the top mounting plate is fixedly connected to the side wall at the outer end of the side mounting plate, the outer movable angle support assembly is fixedly connected to the outer side wall of the side mounting plate, the hinged base is symmetrically arranged on the outer side of the top mounting plate, the hinged base is deflected inwardly, and the fixed angle support rod is rotatably connected to the hinged base.

6. The anti-deformation inner support frame for pre-buried strong and weak current boxes according to claim 5 is characterized in that: The fixed-angle support rod comprises a rotating block, a supporting rod body and a pin shaft. The supporting rod body is fixedly connected to the rotating block, and the rotating block is rotatably linked to the hinge base through the pin shaft.

7. The anti-deformation inner support frame for pre-buried strong and weak electric boxes according to claim 4 is characterized in that: The bidirectional adjustment member includes an internal threaded sleeve and a bidirectional adjustment screw. The internal threaded sleeve is provided in two pieces. The two internal threaded sleeves are respectively fixedly connected to the two mounting frames. Both ends of the bidirectional adjustment screw are respectively threadedly connected to the two internal threaded sleeves. The thread directions of the two ends of the bidirectional adjustment screw are opposite.

8. The anti-deformation inner support frame for pre-buried strong and weak electric boxes according to claim 4 is characterized in that: The outer movable corner support assembly includes a one-way adjustment part, a universal ball joint and a movable support rod, the one-way adjustment part is arranged on the outer side wall of the mounting frame, the universal ball joint is fixedly connected to the two ends of the outer side of the one-way adjustment part, the movable support rod is fixedly connected to the universal ball joint, the end of the movable support rod is arranged to be hemispherical, and the end of the movable support rod can resist the triangular guide frame on the outer expansion frame.

9. The anti-deformation inner support frame for pre-buried strong and weak current boxes according to claim 8 is characterized in that: The one-way adjusting member includes a side connecting seat, a side fixing plate, a sliding rod, a movable seat and a one-way tightening bolt. The side connecting seat is fixedly connected to the outer wall of the mounting bracket away from one end of the fixed angle support rod. The sliding rod and the side fixing plate are provided with two, and the two side fixing plates are respectively fixedly connected to the outer wall of the mounting bracket close to one end of the fixed angle support rod. One end of the sliding rod is fixedly connected to the side fixing plate, and the other end of the sliding rod is fixedly connected to the side connecting seat. Two ends of the movable seat are respectively slidably connected to the sliding rod, and the one-way tightening bolt thread passes through the side connecting seat, and the end of the one-way tightening bolt presses against the side of the movable seat close to the side connecting seat, and the universal ball joint is fixedly connected to the side of the movable seat away from the side connecting seat.

10. The anti-deformation inner support frame for pre-buried strong and weak current boxes according to claim 9 is characterized in that: The side connecting seat comprises a side connecting plate and a reinforcing tube, the reinforcing tube is fixedly passed through the side connecting plate, and the one-way tightening bolt threadably passes through the reinforcing tube.

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