A distribution box for construction engineering

Abstract

This invention provides a power distribution box for building construction, relating to the field of power distribution box technology. It includes an indicator slot, indicator sleeve, and scale lines that work together to achieve unidirectional self-locking and elastic balance to absorb vibration of the insertion rod. The unlocking mechanism, through the cooperation of a vertical slot, vertical rod, push plate, push spring, top sleeve, and measuring rod, enables authorized disassembly that requires precise adjustment based on initial recorded parameters before unlocking. This power distribution box utilizes the inclined surface of the tightening block and tightening slot to form a unidirectional self-locking structure that tightens as it is pulled. Vibration energy is absorbed through the elastic balance of the top and bottom springs, and the unlocking operation is bound to the initial scale parameters during installation. This prevents unauthorized personnel from arbitrarily disassembling the box using common tools, significantly improving the physical safety of the power distribution box on construction sites.

Description

Technical Field

[0001] This invention relates to the field of electrical distribution box technology, and more specifically, to an electrical distribution box for building construction. Background Technology

[0002] In existing technologies, electrical distribution boxes used in construction projects typically employ ordinary bolts as the main fasteners connecting the cabinet door and the box body. This connection method is essentially a single-point physical protection that can be operated with common tools. However, construction sites are special locations with high personnel mobility and complex working environments. Anyone with a wrench or screwdriver can unscrew the bolts and open the box door at any time. This indiscriminate, unrecorded, and unauthorized access exposes the critical electrical components inside the distribution box to the operational risks of non-professionals. At the same time, the chaotic material stacking, frequent movement of heavy machinery, and cross-operation of non-electrical trades in the construction site environment further increase the probability of the distribution box being accidentally touched or maliciously damaged, thus posing a direct threat to the safe and stable operation of the temporary power supply system on site.

[0003] The aforementioned common bolt fixing method exposes multiple and far-reaching safety vulnerabilities in practical applications. On the one hand, it provides opportunities for theft of cables, unauthorized connection of loads, or malicious damage to power facilities. Criminals can easily open the box door to carry out operations without damaging the box itself, making it difficult to trace responsibility for accidents. On the other hand, in the absence of effective access control, the possibility of non-electricians accidentally entering live areas to perform illegal operations increases significantly. This may not only cause electric shock injuries and deaths, but also pose a serious threat to the safety of life and property of the entire construction site due to the risk of arc fire caused by short circuits or overloads. Therefore, there is an urgent need for a physical protection solution for distribution boxes that can enable authorized opening, prevent unauthorized operation, and is suitable for the harsh environment of construction sites. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides a power distribution box for building engineering to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a power distribution box for building engineering, comprising a box body; and further comprising a fixing mechanism and a disassembly mechanism; The fixing mechanism includes a fixing cylinder and an insertion rod. Multiple insertion rods are provided, and the multiple insertion rods are respectively fixedly installed on the side of the box. The fixing cylinder and the insertion rod are coaxially arranged. The lower end of the fixing cylinder is provided with a bottom hole, and an adjusting rod is threaded into the bottom hole. The adjusting rod is coaxially inserted into the insertion rod. The fixing mechanism changes the untying requirements by adjusting the position of the insertion rod and the adjusting rod. The disassembly mechanism includes multiple vertical grooves formed on the upper end of the fixed cylinder, and the multiple vertical grooves are respectively arranged along the circumference of the fixed cylinder, and a vertical rod is slidably connected in each vertical groove.

[0006] Preferably, the fixing mechanism further includes a plurality of tightening grooves equally spaced on the inner wall of the fixing cylinder, the plurality of tightening grooves being arranged along the circumference of the fixing cylinder, and each tightening groove having a tightening block slidably connected within it, the plurality of tightening blocks abutting against the side wall of the insertion rod.

[0007] Preferably, the lower ends of the plurality of tightening blocks are respectively provided with reset springs, the lower ends of the plurality of reset springs respectively abut against the lower end of the fixed cylinder, and the reset springs have only one pitch, with the upper and lower ends of the reset springs on the same plane.

[0008] Preferably, the insertion rod has an internal groove, a top spring is provided in the internal groove, an internal disc is provided at the lower end of the top spring, the internal disc is slidably connected in the internal groove, the upper end of the top spring abuts against the upper end of the internal groove, and the adjusting rod abuts against the internal disc.

[0009] Preferably, the lower end of the fixed cylinder is provided with a bottom spring, the adjusting rod passes through the bottom spring and is coaxially arranged, a top sleeve is connected to the bottom spring, the top sleeve abuts against the lower end of the insertion rod, and the adjusting rod is slidably connected coaxially within the top sleeve.

[0010] Preferably, the lower end of the adjusting rod is provided with multiple indicator slots at equal intervals, and the lower end of the fixed cylinder is provided with an indicator sleeve, through which the adjusting rod passes.

[0011] Preferably, the lower end of the adjusting rod is provided with a hexagonal block, and the hexagonal block is located at the lower end of the plurality of indicator slots, and the upper end of the insertion rod has a plurality of scale lines evenly spaced on its side wall.

[0012] Preferably, each of the fixed cylinders is provided with an external connecting block on its outer side, and the multiple external connecting blocks are respectively fixedly connected to external equipment.

[0013] Preferably, the release mechanism includes push plates mounted on a plurality of vertical rods, and each vertical rod is provided with a push spring at its lower end. The push spring abuts against the upper end of the tightening block, and the upper end of the fixing cylinder is threadedly connected to a top sleeve, which presses against the push plate.

[0014] Preferably, a measuring rod is provided on the outer wall of the fixed cylinder, and the measuring rod is used to indicate the position of the top sleeve.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a power distribution box for building engineering, which has the following beneficial effects: This invention fundamentally solves the safety loophole of traditional bolt fixing methods, which allows anyone to disassemble the device, through an innovative one-way self-locking structure. In its fixing mechanism, multiple tightening blocks are always in contact with the side wall of the insertion rod under the action of the return spring. When the insertion rod is subjected to an outward pulling force, the tightening blocks slide upward along the tightening groove and retract towards the axis, thereby generating a self-locking effect that tightens as it is pulled. This design based on the inclined plane self-locking principle makes it impossible for the insertion rod to be pulled out of the fixing cylinder under normal use, completely eliminating the possibility of unauthorized personnel forcibly disassembling it with general tools. At the same time, the multiple tightening blocks are evenly distributed along the circumference to ensure the uniform distribution of locking force, providing a reliable physical protection barrier for the distribution box.

[0016] The elastic balance and vibration absorption mechanism constructed in this invention effectively extends the service life of the equipment in harsh construction site environments while achieving stable fixation. When the distribution box is subjected to vibration impact, the insertion rod undergoes slight vertical displacement. The top and bottom springs convert vibration energy into elastic potential energy through compression and rebound, store it, and release it slowly, thereby reducing the impact damage of vibration on the connection structure. At the same time, this elastic balance design keeps the static friction between the tightening block and the insertion rod stable, avoiding abnormal loosening or over-tightening caused by vibration, thus ensuring the long-term reliable operation of the distribution box under frequent vibration conditions on construction sites.

[0017] This invention achieves precise control and traceability of the authority to dismantle the distribution box by binding the unlocking operation to the initial parameters during installation. Installers must record the position of the scale line on the insertion rod and the initial position of the indicator slot on the adjustment rod relative to the indicator sleeve during initial installation. These recorded parameters constitute the unique key for the unlocking operation. Unauthorized personnel, unable to know these initial parameters, cannot determine the precise distance the adjustment rod needs to be rotated downwards to balance the elastic force and reduce friction to zero, nor can they determine the depth the top sleeve needs to be screwed in to drive the push spring to release the lock, thus failing to complete the unlocking operation. This authorization mechanism based on mechanical parameter memory requires no electronic components or complex control systems, yet achieves an access control effect similar to a key lock cylinder, providing a simple and reliable physical layer security solution for power management at construction sites.

[0018] The force-matching design of the push spring and reset spring in this invention ensures that the unlocking process must strictly adhere to preset force balance conditions, further enhancing the difficulty of unauthorized disassembly. The push force of the push spring is precisely set to be slightly greater than the sum of the push forces of multiple reset springs. Only when the sum of the elastic forces of the top spring and the bottom spring equals the weight of the housing and the friction force is zero can the push spring push the tightening block downward to release the self-locking mechanism. If the adjusting rod is not adjusted to the precise position so that the elastic balance state is not achieved, the push spring cannot overcome the combined action of the reset spring and the friction force, and the tightening block remains locked. This dual verification mechanism based on force coupling makes the unlocking operation not only dependent on parameter memory but also on the precise restoration of the elastic balance state, significantly improving the reliability of the protection measures.

[0019] This invention achieves high safety while fully considering operability and adaptability for on-site use. Installers can easily adjust the position of the adjusting rod using the hexagonal block, and the adjustment amount can be intuitively read through the cooperation of the indicator slot and the indicator sleeve. The screw-in depth of the top sleeve can be precisely controlled through the measuring rod. All operations can be completed using common tools, without the need for special equipment or complicated training. At the same time, the fixing and unlocking mechanisms adopt a modular design, and top and bottom springs of different stiffnesses can be selected according to the different weight specifications of the distribution boxes. The adjustment range of the adjusting rod can adapt to a certain range of self-weight differences, providing a flexible and reliable solution for the standardized installation and unified safety management of various distribution boxes on construction sites. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a power distribution box for building engineering according to the present invention; Figure 2 This is a schematic diagram of the structure of the fixed cylinder and the insertion rod in this invention; Figure 3 In this invention Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 This is a cross-sectional view of the fixed cylinder in this invention; Figure 5 This is a schematic diagram of the structure of multiple tightening blocks in this invention; Figure 6 This is a schematic diagram of the insertion rod and adjusting rod in this invention; Figure 7 This is a cross-sectional view of the insertion rod in this invention; Figure 8 This is a cross-sectional view of the fixed cylinder and the insertion rod in this invention.

[0021] In the diagram: 11. Box body; 21. Fixing mechanism; 22. Fixing cylinder; 23. Insertion rod; 24. Bottom hole; 25. Adjusting rod; 26. Tightening groove; 27. Tightening block; 28. Return spring; 29. ​​Internal groove; 31. Unlocking mechanism; 32. Vertical groove; 33. Vertical rod; 34. Push plate; 35. Push spring; 36. Top sleeve; 37. Measuring rod; 210. Top spring; 211. Internal plate; 212. Bottom spring; 213. Top sleeve; 214. Indicator groove; 215. Indicator sleeve; 216. Hexagonal block; 217. Scale line; 218. External block. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0025] Please see Figures 1 to 8 This embodiment provides a power distribution box for building construction. The power distribution box aims to solve the technical problem that the existing construction site power distribution boxes are fixed with universal bolts, which makes them easy for anyone to disassemble and have poor security. By integrating a fixing mechanism based on the principle of spring force balance and one-way self-locking and a disassembly mechanism that requires knowledge of the initial setting parameters to operate, the authorized installation and unauthorized disassembly of the power distribution box are realized, which significantly improves the physical security of temporary power supply on the construction site.

[0026] 1. Overall structure and initial state The electrical distribution box for building construction includes a box body 11 as a container, and a fixing mechanism 21 and a releasing mechanism 31 installed between the box body 11 and external equipment. The fixing mechanism 21 is used to achieve one-way self-locking fixation between the box body 11 and external equipment, and the releasing mechanism 31 is used to release the locking state of the fixing mechanism when specific parameter conditions are met.

[0027] 2. Composition of the core system 2.1 Fixed mechanism 21 The fixing mechanism 21 is the core unit for achieving one-way self-locking fixation of the enclosure 11. It includes a fixing cylinder 22 fixedly installed on an external device and multiple insertion rods 23 fixedly installed on the side of the enclosure 11. The fixing cylinder 22 and the insertion rods 23 are coaxially arranged, and the insertion rods 23 can be inserted into the fixing cylinder 22. The lower end of the fixing cylinder 22 has a bottom hole 24, and an adjusting rod 25 is threaded into the bottom hole 24. The adjusting rod 25 is coaxially inserted into the insertion rod 23. Multiple tightening grooves 26 are evenly spaced along the circumference of the inner wall of the insertion rod 23. Each tightening groove 26 has a tightening block 27 slidably connected within it, and the inner sides of the tightening blocks 27 abut against the side wall of the insertion rod 23. A return spring 28 is provided at the lower end of each tightening block 27, and the lower end of the return spring 28 abuts against the lower end of the fixing cylinder 22. The return spring 28 has only one pitch, and its upper and lower ends are on the same plane to ensure uniform thrust applied to the tightening block 27. The insertion rod 23 has... An internal groove 29 is provided, and a top spring 210 is provided inside the internal groove 29. An internal disc 211 is provided at the lower end of the top spring 210. The internal disc 211 is slidably connected to the internal groove 29. The upper end of the top spring 210 abuts against the upper end of the internal groove 29. The upper end of the adjusting rod 25 abuts against the lower end of the internal disc 211. A bottom spring 212 is provided at the lower end of the fixed cylinder 22, and the adjusting rod 25 passes through the bottom spring 212. A top sleeve 213 is connected to the upper end of the bottom spring 212. The upper end of the rod 25 abuts against the lower end of the insertion rod 23. The lower end of the adjusting rod 25 is provided with multiple indicator grooves 214 at equal intervals. The lower end of the fixed cylinder 22 is fixedly provided with an indicator sleeve 215 and the adjusting rod 25 slides through the indicator sleeve 215. The lowest end of the adjusting rod 25 is provided with a hexagonal block 216 for operation. The side wall of the upper end of the insertion rod 23 is provided with multiple scale lines 217 at equal intervals. The outer side of each fixed cylinder 22 is provided with an external connecting block 218 for connecting external equipment.

[0028] 2.2 Unlocking Mechanism 31 The unlocking mechanism 31 is the core unit for unlocking operations. It includes multiple vertical grooves 32 on the upper end of the fixed cylinder 22, which are evenly distributed around the circumference of the fixed cylinder 22. A vertical rod 33 is slidably connected in each vertical groove 32. A push plate 34 is fixedly connected to the upper end of the multiple vertical rods 33. A push spring 35 is provided between the lower end of each vertical rod 33 and the upper end of the corresponding tightening block 27. A top sleeve 36 is threaded to the upper end of the fixed cylinder 22, and the lower end of the top sleeve 36 presses against the upper end face of the push plate 34. A measuring rod 37 is provided on the outer wall of the fixed cylinder 22 to indicate the screw-in depth of the top sleeve 36.

[0029] 3. Working process and principle of the device The installation, self-locking, and unlocking process of the electrical distribution box for the building project is as follows: During installation, multiple insertion rods 23 on the side of the box 11 are inserted into the corresponding fixing cylinders 22. The adjusting rod 25 is inserted into the insertion rod 23 along with it. The upper end of the adjusting rod 25 abuts against the inner disc 211, compressing the top spring 210. When the entire weight of the box 11 acts on the top spring 210, the lower end of the insertion rod 23 is just about to contact the top sleeve 213. At this point, the operator records the position of the corresponding scale line 217 on the insertion rod 23. The initial position of the indicator groove 214 on the adjusting rod 25 relative to the indicator sleeve 215 is recorded. After the initial state is recorded, the insertion rod 23 is pressed down further under its own weight, which compresses both the top spring 210 and the bottom spring 212. Multiple tightening blocks 27 adhere to the side wall of the insertion rod 23 under the thrust of the return spring 28. When the insertion rod 23 tends to be pulled out upward, the tightening blocks 27 slide upward along the tightening groove 26 under the drive of friction and contract in the axial direction, thus becoming tighter and tighter to form a one-way self-locking, making it impossible for the insertion rod 23 to be pulled out from the fixed cylinder 22.

[0030] When vibration occurs at the construction site, the insertion rod 23 undergoes a slight vertical displacement under the vibration. The top spring 210 and bottom spring 212 absorb the vibration energy through compression and rebound, effectively reducing the impact of vibration on the connection structure. At the same time, the real-time position of the insertion rod 23 fluctuates with the vibration, making it impossible for unauthorized personnel to obtain the accurate position parameters required for unlocking through simple measurement.

[0031] When authorized personnel need to disassemble the distribution box, they must operate according to the initial scale parameters recorded during installation. The operator first uses a wrench to hold the hexagonal block 216 and rotates the adjusting rod 25. According to the position of the indicator slot 214 relative to the indicator sleeve 215, the adjusting rod 25 is rotated downwards by a preset distance. The downward movement of the adjusting rod 25 reduces the compression of the top spring 210, thereby reducing the upward elastic force of the top spring 210 on the insertion rod 23. Since the bottom spring 212 still maintains its original compression state, the upward elastic force of the top spring 210 gradually decreases as the adjusting rod 25 moves downwards. When the elastic force of the top spring 210 and the bottom spring... When the sum of the elastic forces of 212 equals the weight of the housing 11, the static friction between the tightening block 27 and the insertion rod 23 drops to zero. At this time, the operator rotates the top sleeve 36 according to the indication of the measuring rod 37. The top sleeve 36 pushes the push spring 35 downward through the push plate 34 and the vertical rod 33. Since the pushing force of the push spring 35 is slightly greater than the sum of the pushing forces of the multiple return springs 28, the push spring 35 pushes the tightening block 27 to overcome the elastic force of the return spring 28 and move downward, so that the tightening block 27 is released from the tight fit with the insertion rod 23, and the one-way self-locking is released. At this time, the insertion rod 23 can be smoothly pulled out from the fixed cylinder 22, and the unlocking and disassembly are completed.

[0032] Throughout the unlocking process, only authorized personnel who know the initial scale position and the initial indicator slot position of the adjusting rod can accurately adjust the adjusting rod to the precise position where the friction force is reduced to zero. Unauthorized personnel, unable to know these initial parameters, cannot determine the exact distance the adjusting rod needs to be turned downwards, nor can they ensure that the push spring force just overcomes the effect of the return spring, thus failing to unlock the lock and effectively preventing unauthorized disassembly.

[0033] Working principle summary: This invention absorbs vibration energy and maintains unidirectional self-locking through the elastic balance of the top spring 210 and bottom spring 212 in the fixing mechanism 21. The tightening block 27 and the inclined surface of the tightening groove 26 cooperate to form a self-locking structure that tightens as it is pulled. By using the elastic balance mechanism in the unlocking mechanism 31, which requires precise adjustment based on the initial recorded parameters, authorized installation of the distribution box and prevention of unauthorized disassembly are achieved, significantly improving the physical safety of the distribution box on the construction site.

[0034] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will 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 invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution box for building construction, comprising a box body (11); characterized in that: It also includes a fixing mechanism (21) and a releasing mechanism (31); The fixing mechanism (21) includes a fixing cylinder (22) and an insertion rod (23). Multiple insertion rods (23) are provided, and multiple insertion rods (23) are respectively fixedly installed on the side of the box (11). The fixing cylinder (22) and the insertion rod (23) are coaxially arranged. The lower end of the fixing cylinder (22) is provided with a bottom hole (24). An adjusting rod (25) is threaded into the bottom hole (24). The adjusting rod (25) is coaxially inserted into the insertion rod (23). The fixing mechanism (21) changes the requirements for disassembly by adjusting the position of the insertion rod (23) and the adjusting rod (25). The disassembly mechanism (31) includes a plurality of vertical grooves (32) formed on the upper end of the fixed cylinder (22), and the plurality of vertical grooves (32) are respectively arranged along the circumference of the fixed cylinder (22), and a vertical rod (33) is slidably connected in each vertical groove (32).

2. A distribution box for construction work according to claim 1, characterized in that: The fixing mechanism (21) further includes a plurality of tightening grooves (26) evenly spaced on the inner wall of the fixing cylinder (22). The plurality of tightening grooves (26) are respectively arranged along the circumference of the fixing cylinder (22), and each tightening groove (26) is respectively limited and slidably connected with a tightening block (27). The plurality of tightening blocks (27) abut against the side wall of the insertion rod (23).

3. A distribution box for construction work according to claim 2, characterised in that: Each of the tightening blocks (27) has a return spring (28) at its lower end. The lower ends of the return springs (28) are respectively abutted against the lower end of the fixed cylinder (22). Each return spring (28) has only one pitch, and the upper and lower ends of the return spring (28) are on the same plane.

4. A distribution box for building construction according to claim 3, characterized in that: The insertion rod (23) has an internal groove (29) inside, and a top spring (210) is provided in the internal groove (29). An internal disc (211) is provided at the lower end of the top spring (210). The internal disc (211) is slidably connected in the internal groove (29). The upper end of the top spring (210) abuts against the upper end of the internal groove (29). The adjusting rod (25) abuts against the internal disc (211).

5. A distribution box for building construction according to claim 4, characterized in that: The lower end of the fixed cylinder (22) is provided with a bottom spring (212), the adjusting rod (25) passes through the bottom spring (212) and is coaxially arranged, the bottom spring (212) is connected to a top sleeve (213), the top sleeve (213) abuts against the lower end of the insertion rod (23), and the adjusting rod (25) is slidably connected to the top sleeve (213) coaxially.

6. A distribution box for construction work according to claim 5, characterised in that: The lower end of the adjusting rod (25) is provided with multiple indicator slots (214) at equal intervals, and the lower end of the fixed cylinder (22) is provided with an indicator sleeve (215), through which the adjusting rod (25) passes.

7. A distribution box for construction work according to claim 6, characterised in that: The lower end of the adjusting rod (25) is provided with a hexagonal block (216), and the hexagonal block (216) is located at the lower end of the plurality of indicator slots (214). The upper side wall of the insertion rod (23) is provided with a plurality of scale lines (217) at equal intervals.

8. The distribution box for construction work according to claim 1, wherein: Each of the fixed cylinders (22) is provided with an external block (218) on its outer side, and the multiple external blocks (218) are fixedly connected to external equipment.

9. A distribution box for construction work according to claim 2, characterized in that: The release mechanism (31) includes a push plate (34) mounted on a plurality of vertical rods (33), and each vertical rod (33) is provided with a push spring (35) at its lower end. The push spring (35) abuts against the upper end of the tightening block (27). The upper end of the fixing cylinder (22) is threadedly connected to a top sleeve (36), which presses against the push plate (34).

10. A distribution box for construction work according to claim 9, characterised in that: A measuring rod (37) is provided on the outer wall of the fixed cylinder (22), and the measuring rod (37) is used to indicate the position of the top sleeve (36).

Images