Anti-bounce type power distribution station house cabinet door fixing device

Abstract

This invention relates to the field of power operation and maintenance tools, specifically an anti-rebound type cabinet door fixing device for substations. It includes an upper suction cup, a lower suction cup, a connecting rod, an upper spring, a lower spring, and a clamping head. The upper and lower suction cups are spaced vertically, and a connecting rod is detachably fixed between them. The upper spring is tilted with the left side higher than the right, and the lower spring is tilted with the left side lower than the right. This invention has a reasonable and compact structure and is easy to use. By placing the upper and lower springs between the upper and lower suction cups and the clamping head, it achieves continuous and buffered elastic pulling resistance against the door, effectively counteracting wind force and suppressing door rebound. The triangular frame formed by the upper and lower suction cups, connecting rod, and upper and lower springs achieves reasonable distribution of pulling force and synergistic cancellation of lateral shear force, ensuring the stability of the suction base and preventing it from falling off. It features stability, safety, versatility, and ease of operation.

Description

Technical Field

[0001] This invention relates to the field of power operation and maintenance tools, specifically an anti-rebound type cabinet door fixing device for substations. Background Technology

[0002] Currently, the cabinet doors of substation equipment typically rely on their own built-in fixing devices for limitation. In actual maintenance work, it is often necessary to fully open the cabinet doors to create operating space. However, the existing cabinet door fixing structure design has significant limitations. Inner doors are usually equipped with corresponding fixing devices to effectively limit movement, while outer doors lack corresponding fixing support structures. This imbalance in the fixing configuration of inner and outer doors results in the outer doors being in an unrestrained state after opening, unable to stably maintain a fully open position, constituting a major technical defect in the existing cabinet door structure.

[0003] The inability to effectively secure the outer door directly impacts the efficiency and quality of maintenance work. Because the outer door is in a movable state and cannot be fully opened, the proper maintenance work space is severely compressed, restricting the movement of personnel and hindering smooth equipment inspection and repair operations. Simultaneously, the incompletely secured cabinet door blocks external natural light or artificial lighting, creating shadowy corners inside the cabinet and severely impairing the brightness of the space. In this dimly lit and cramped environment, maintenance personnel struggle to identify equipment details, resulting in decreased operational accuracy and significantly slowing down the maintenance progress, causing delays and increasing the likelihood of errors.

[0004] Furthermore, the lack of securing devices on the outer door poses a significant safety hazard. In well-ventilated environments or outdoor / semi-outdoor substations, airflow is common, and the unrestrained outer door is highly susceptible to sudden rotation or violent slamming by strong winds. This sudden door rebound not only forcibly interrupts the maintenance process but also poses a serious risk of injury to workers who are being pinched or struck. The uncontrollable swinging and closing of the cabinet door compromises the safety of the maintenance environment, becoming a prominent problem that urgently needs to be addressed in existing technology.

[0005] Faced with the dilemma of outer doors being difficult to secure and prone to closing under wind force, there is a severe lack of dedicated anti-closing securing devices on the market. In practice, due to the lack of a support structure that can provide continuous wind resistance, the only option is often to manually pull the door to prevent it from closing. This method greatly occupies the hands of maintenance personnel, forcing maintenance work that originally required two hands to be performed with only one hand, severely impacting work quality and efficiency. Furthermore, manual pulling cannot withstand strong winds for long; once personnel become fatigued or lose focus and release their grip, the door will still slam shut violently, causing injury. If manual pulling is unavailable, one must find bricks, sticks, or other foreign objects as temporary supports, but many substation rooms require cleanliness or are located in special areas where such temporary items are simply unavailable. The lack of dedicated securing methods that can continuously resist external force makes maintenance work extremely difficult; therefore, the promotion of securing devices for cabinet doors in substation rooms is urgently needed. Summary of the Invention

[0006] This invention provides a spring-loaded fixing device for cabinet doors in power distribution rooms, which overcomes the shortcomings of the prior art. It can effectively solve the problems of the lack of continuous wind-resistant fixing means for the outer doors of existing power distribution rooms, which makes it difficult to pull them for long and easy to let them go and injure people, as well as the problem that the door body is prone to springing back due to insufficient resistance of temporary support.

[0007] The technical solution of the present invention is achieved through the following measures: A rebound-resistant cabinet door fixing device for power distribution rooms includes an upper suction cup, a lower suction cup, a connecting rod, an upper spring, a lower spring, and a clamping head. The upper and lower suction cups are arranged vertically at intervals, and a connecting rod is detachably fixed between the upper and lower suction cups. The upper spring is inclined with the left side higher than the right side, and the lower spring is inclined with the left side lower than the right side. The left end of the upper spring is movably connected to the upper suction cup, and the left end of the lower spring is movably connected to the lower suction cup. The right ends of the upper and lower springs are movably connected to the clamping head through a movable joint assembly. The clamping head can clamp the other end of the door body after applying pressure to one end.

[0008] The following are further optimizations and / or improvements to the above-mentioned technical solution: The aforementioned clamping head may include a clamping body, an upper clamping component, and a lower clamping component, with the upper clamping component and the lower clamping component fixedly installed on the inner side of the jaws of the clamping body, respectively.

[0009] The aforementioned clamping pliers body may include a first and a second clamping pliers rotatably connected. One end of each clamping pliers is a hand-held portion, and the other end forms a jaw. An upper clamping assembly and a lower clamping assembly are respectively fixedly installed at the ends of the first and second clamping pliers corresponding to the jaw positions. The upper clamping assembly includes a first threaded lifting head, a connecting screw, a second threaded lifting head, a connecting plate, and a grinding disc. The first and second threaded lifting heads are fixedly installed together by the connecting screw. The left end of the first threaded lifting head is installed together with the first clamping pliers, the right end of the second threaded lifting head is fixedly installed together with the middle of the connecting plate, and the lower end of the connecting plate is fixedly installed together with the upper side of the grinding disc. The lower clamping assembly and the upper clamping assembly have the same structure and are arranged symmetrically.

[0010] The aforementioned live joint assembly may include a third threaded lifting head, a double-ended bolt, and a fourth threaded lifting head. The third threaded lifting head and the fourth threaded lifting head are fixed together by the double-ended bolt. The right ends of the upper spring and the lower spring are both installed together with the left end of the third threaded lifting head. The right end of the fourth threaded lifting head is installed together with the middle part of the clamping clamp body.

[0011] The above may also include a saddle clamp and a U-bolt. The left end of the upper spring is movably connected to the upper suction cup through the U-bolt and the saddle clamp, and the left end of the lower spring is movably connected to the lower suction cup through the U-bolt and the saddle clamp.

[0012] The aforementioned connecting rod may include an upper screw cylinder, a fixing screw, and a lower screw cylinder. The upper suction cup is provided with an upper screw cylinder, and the lower suction cup is provided with a lower screw cylinder. The upper screw cylinder and the lower screw cylinder are fixedly installed with a fixing screw through a threaded connection.

[0013] This invention features a reasonable and compact structure, making it easy to use. By incorporating a clamping body with a frosted disc in its jaws, it achieves strong locking and deep gripping of the door edges to prevent slippage and dislocation of the clamping end. Upper and lower springs, placed between the upper and lower suction cups and the clamping body, provide continuous and buffered elastic resistance to the door's pull, effectively counteracting wind force and suppressing door rebound. A triangular frame composed of the upper and lower suction cups, connecting rod, and upper and lower springs ensures reasonable distribution of pulling force and coordinated cancellation of lateral shear force, guaranteeing the stability of the suction base. A detachable connecting rod allows for adjustment of the distance between the upper and lower suction cups, enabling flexible adaptation to cabinets of different sizes and optimizing the pulling force angle. This effectively solves the problems of existing power distribution room doors lacking continuous wind-resistant fixing methods, leading to difficulty in sustained manual pulling and the risk of slippage and injury, as well as insufficient temporary support resistance causing door rebound. The invention is characterized by its stability, safety, versatility, and ease of operation. Attached Figure Description

[0014] Appendix Figure 1These are schematic diagrams of the main structure of embodiments 1 to 6 of the present invention.

[0015] Appendix Figure 2 For the appendix Figure 1 A structural diagram in use.

[0016] The codes in the attached diagram are as follows: 1 for upper suction cup, 2 for lower suction cup, 3 for upper screw, 4 for fixing screw, 5 for lower screw, 6 for upper spring, 7 for lower spring, 8 for clamping clamp body, 9 for first threaded lifting head, 10 for connecting screw, 11 for second threaded lifting head, 12 for connecting plate, 13 for frosted disc, 14 for third threaded lifting head, 15 for double-ended bolt, 16 for fourth threaded lifting head, 17 for U-shaped clamp, 18 for U-bolt, 19 for cabinet body, and 20 for cabinet door. Detailed Implementation

[0017] The present invention is not limited to the following embodiments, and specific implementation methods can be determined according to the technical solutions and actual conditions of the present invention.

[0018] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0019] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1 , 2As shown, the anti-rebound type cabinet door fixing device for power distribution rooms includes an upper suction cup 1, a lower suction cup 2, a connecting rod, an upper spring 6, a lower spring 7, and a clamping head. The upper suction cup 1 and the lower suction cup 2 are arranged vertically at intervals, and a connecting rod is detachably fixed between the upper suction cup 1 and the lower suction cup 2. The upper spring 6 is inclined with the left side higher than the right side, and the lower spring 7 is inclined with the left side lower than the right side. The left end of the upper spring 6 is movably connected to the upper suction cup 1, and the left end of the lower spring 7 is movably connected to the lower suction cup 2. The right ends of the upper spring 6 and the lower spring 7 are movably connected to the clamping head through a movable joint assembly. The clamping head can clamp the other end to the outside of the door after applying pressure to one end. During use, the upper suction cup 1 and lower suction cup 2 serve as the connecting base between the entire fixing device and the cabinet. They enable non-destructive installation and rapid positioning. In the maintenance work of the power distribution room, the surface of the cabinet is usually required to remain intact, and drilling or destructive welding is strictly prohibited. The upper suction cup 1 and lower suction cup 2 are fixed to the surface of the cabinet by negative pressure adsorption, without requiring any structural modification to the cabinet, effectively protecting the integrity of the equipment. At the same time, the adsorption and removal process of the upper suction cup 1 and lower suction cup 2 is extremely convenient. The staff only needs to apply pressure to complete the establishment of the anchor point, which greatly shortens the installation time of the device. Furthermore, the position of the upper suction cup 1 and lower suction cup 2 can be flexibly selected according to the actual situation of the cabinet surface, without being limited by the fixing hole position, which is highly adaptable and provides a stable and quickly movable tension support point for the entire anti-rebound device. Furthermore, the triangular structure formed by the upper suction cup 1 and lower suction cup 2, along with the connecting rod, upper spring 6, and lower spring 7, provides overall stability and a scientifically distributed force. The dual suction cup design of the upper suction cup 1 and lower suction cup 2 increases the adsorption area and adhesion to the cabinet surface. The connecting rod rigidly connects the two into a single unit, forming a sturdy and torsion-resistant base, effectively avoiding the risk of deflection and detachment of a single suction cup under pressure. The triangular frame formed by the upper spring 6, lower spring 7, and connecting rod is a classic geometrically stable system. When the clamping head passes through... When the upper spring 6 and lower spring 7 apply anti-rebound pulling force to the door, the triangular structure can reasonably distribute this concentrated pulling force to the upper and lower suction cups, preventing the suction cup on one side from leaking and falling off due to overload. At the same time, when there is a gust of wind disturbance in the power distribution room or the door accidentally sways laterally, the two springs in the triangular layout can generate a synergistic restraining reaction force, effectively counteracting the peeling tendency of the suction cup caused by the lateral shear force, ensuring that the suction cup always remains perpendicular to the cabinet surface, thus providing a stable and reliable anti-wind rebound pulling force even under complex external interference.

[0020] The aforementioned anti-rebound type cabinet door fixing device for substations can be further optimized and / or improved according to actual needs: Example 2: As shown in the attached document Figure 1 , 2As shown, the clamping head includes a clamping body 8, an upper clamping component, and a lower clamping component. The upper clamping component and the lower clamping component are fixedly installed on the inner side of the jaws of the clamping body 8. During use, the clamp body 8 is a known C-jaw pliers. The pliers, along with the upper and lower clamping components mounted on their jaws, achieve quick, reliable, and non-destructive clamping with the outer door. Because the pliers themselves have a locking mechanism, once engaged, they form an extremely stable mechanical connection with the door edge, completely eliminating the problem of fatigue and loosening due to manual pulling, ensuring the door remains under control during long-term maintenance. Furthermore, the upper and lower clamping components effectively increase the contact area with the door's metal edge, significantly improving friction and preventing slippage or detachment under spring tension and wind force. Simultaneously, the upper and lower clamping components prevent direct hard contact between the pliers' hard metal jaws and the door surface, effectively preventing indentations and damage to the cabinet door's paint or structure during clamping, thus meeting the dual requirements of strong fixation and door protection.

[0021] Example 3: As shown in the attached document Figure 1 , 2As shown, the clamping pliers body 8 includes a first clamping pliers body and a second clamping pliers body that are rotatably connected. One end of each clamping pliers body is a hand-held part, and the other end of each clamping pliers body forms a jaw. An upper clamping assembly and a lower clamping assembly are respectively fixedly installed at the ends of the first and second clamping pliers bodies corresponding to the jaw positions. The upper clamping assembly includes a first threaded lifting head 9, a connecting screw 10, a second threaded lifting head 11, a connecting piece 12, and a grinding disc 13. The first threaded lifting head 9 and the second threaded lifting head 11 are fixedly installed together by the connecting screw 10. The left end of the first threaded lifting head 9 is installed together with the first clamping pliers body, and the right end of the second threaded lifting head 11 is fixedly installed together with the middle part of the connecting piece 12. The lower end of the connecting piece 12 is fixedly installed together with the upper side of the grinding disc 13. The lower clamping assembly and the upper clamping assembly have the same structure and are arranged symmetrically. During use, by setting the abrasive disc 13, it can have anti-slip gripping ability and reliable braking effect when clamping the door. The abrasive disc 13 itself has extremely high hardness and a large number of sharp abrasive grains distributed on its surface. When the pliers close and clamp the edge of the door, these hard abrasive grains can easily pierce the paint layer on the surface of the cabinet door under the action of clamping force, and embed a small amount into the metal substrate to form a deep mechanical interlock, thereby providing normal friction force and tangential anti-slip ability far exceeding that of conventional rubber or smooth metal pads. Therefore, under the gusty wind environment of the power distribution room and the continuous pulling action of the spring, the device will inevitably be subjected to large lateral and tangential shear forces. Thus, the abrasive disc 13 can effectively prevent the clamping end from slipping or dislodging on the door, ensuring that the anti-rebound pulling point is always stable. At the same time, the material of the abrasive disc 13 has excellent wear resistance and deformation resistance, and is not prone to wear, aging or dent failure under long-term, high-frequency strong clamping, ensuring that the fixing device can maintain long-term and consistent clamping reliability in harsh maintenance environments. The first threaded lifting head 9, the connecting screw 10, and the second threaded lifting head 11 are connected in sequence, which has the technical effect of adjustable overall length and multi-dimensional flexible hinge. In addition, the two ends of the connecting screw 10 naturally form two rotation nodes. The rings of the first threaded lifting head 9 and the second threaded lifting head 11 give the connecting screw 10 the freedom to rotate independently, allowing it to swing and center flexibly at multiple angles. This effectively releases the bending stress caused by installation deviation or operating vibration, avoids rigid interference and structural damage, and makes it easier for the clamping head to clamp on the outside of the door.

[0022] Example 4: As shown in the appendix Figure 1 , 2As shown, the movable joint assembly includes a third threaded lifting head 14, a double-ended bolt 15, and a fourth threaded lifting head 16. The third threaded lifting head 14 and the fourth threaded lifting head 16 are fixedly installed together by the double-ended bolt 15. The right ends of the upper spring 6 and the lower spring 7 are both installed together with the left end of the third threaded lifting head 14, and the right end of the fourth threaded lifting head 16 is installed together with the middle of the clamping clamp body 8. During use, the movable connection method of the third threaded lifting head 14, the double-ended bolt 15, and the fourth threaded lifting head 16 connected in sequence provides the technical effect of adjustable overall length and multi-dimensional flexible hinge. In addition, the two ends of the double-ended bolt 15 naturally form two rotation nodes. The rings of the third threaded lifting head 14 and the fourth threaded lifting head 16 give the double-ended bolt 15 the freedom of independent rotation, allowing it to swing and center flexibly at multiple angles, effectively releasing the bending stress caused by installation deviation or operating vibration, and avoiding rigid interference and structural damage.

[0023] Example 5: As shown in the attached document Figure 1 , 2 As shown, it also includes a saddle clamp tube 17 and a U-bolt 18. The left end of the upper spring 6 is movably connected to the upper suction cup 1 through the U-bolt 18 and the saddle clamp tube 17, and the left end of the lower spring 7 is movably connected to the lower suction cup 2 through the U-bolt 18 and the saddle clamp tube 17. During use, the saddle clamp 17 and U-bolt 18 are used to achieve a movable connection, avoiding the limiting constraints of traditional single-axis hinges. The clearance at the joint between the U-bolt 18 and the saddle clamp 17 allows the upper spring 6 and upper suction cup 1, as well as the lower spring 7 and lower suction cup 2, to rotate and swing relative to each other in multiple dimensions, achieving a high degree of spatial mobility. Secondly, this connection method has excellent buffering and fault tolerance capabilities. It can not only effectively absorb and offset the vibration and impact during use after the upper suction cup 1, lower suction cup 2, and clamping head are installed, but also allow each component to move flexibly within the normal range of motion. When the relative displacement reaches the physical contact limit of the U-bolt 18 and the saddle clamp 17, the two immediately form a rigid abutment to prevent the components from excessively separating or falling off uncontrollably. Furthermore, the overall structure is simple and easy to assemble and disassemble.

[0024] Example 6: As attached Figure 1 , 2As shown, the connecting rod includes an upper screw cylinder 3, a fixing screw 4, and a lower screw cylinder 5. The upper suction cup 1 is equipped with the upper screw cylinder 3, and the lower suction cup 2 is equipped with the lower screw cylinder 5. The upper screw cylinder 3 and the lower screw cylinder 5 are fixedly connected by a fixing screw 4. During use, the connecting rod adopts a detachable design, which allows the distance between the upper suction cup 1 and the lower suction cup 2 to be adjusted according to different lengths, greatly improving the versatility and adaptability of the device. Since the equipment cabinets in the power distribution room have various sizes and specifications, and the distribution of flat areas suitable for adsorption on the cabinet surface is also different, the fixed spacing of the upper suction cup 1 and the lower suction cup 2 is often difficult to adapt to cabinet doors of different specifications. By changing the fixing screw 4 of different lengths, the staff can flexibly adjust the distance between the upper suction cup 1 and the lower suction cup 2 to ensure that the upper suction cup 1 and the lower suction cup 2 can always be accurately positioned on the cabinet surface. The optimal adsorption position on the surface avoids problems such as weak adsorption or inability to install due to improper span; at the same time, this spacing adjustment directly changes the geometry of the triangle formed by the upper spring 6, lower spring 7 and connecting rod, so that the pulling angle and force distribution can be specifically optimized according to the actual cabinet door size and wind resistance requirements, ensuring that the anti-rebound pull force is always in the most efficient direction of action; in addition, the detachable connecting rod allows the entire device to be disassembled into smaller parts when stored, greatly reducing the space occupied and greatly facilitating the portability and flexible deployment on site for maintenance personnel.

[0025] The above technical features constitute the preferred embodiment of the present invention, which has strong adaptability and optimal implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A rebound-resistant cabinet door fixing device for substation rooms, characterized in that... It includes an upper suction cup, a lower suction cup, a connecting rod, an upper spring, a lower spring, and a clamping head. The upper and lower suction cups are spaced apart vertically, and a connecting rod is detachably fixed between them. The upper spring is tilted with the left side higher than the right side, and the lower spring is tilted with the left side lower than the right side. The left end of the upper spring is movably connected to the upper suction cup, and the left end of the lower spring is movably connected to the lower suction cup. The right ends of the upper and lower springs are movably connected to the clamping head through a hinged assembly. The clamping head can clamp the other end to the outside of the door after pressure is applied to one end.

2. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 1, characterized in that... The clamping head includes a clamping body, an upper clamping component, and a lower clamping component. The upper clamping component and the lower clamping component are fixedly installed on the inner side of the jaws of the clamping body.

3. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 2, characterized in that... The clamping pliers body includes a first clamping pliers body and a second clamping pliers body that are rotatably connected. One end of each clamping pliers body is a hand-held part, and the other end of each clamping pliers body forms a jaw. An upper clamping assembly and a lower clamping assembly are respectively fixedly installed at the ends of the first and second clamping pliers bodies corresponding to the jaw positions. The upper clamping assembly includes a first threaded lifting head, a connecting screw, a second threaded lifting head, a connecting plate, and a grinding disc. The first threaded lifting head and the second threaded lifting head are fixedly installed together by the connecting screw. The left end of the first threaded lifting head is installed together with the first clamping pliers body, the right end of the second threaded lifting head is fixedly installed together with the middle part of the connecting plate, and the lower end of the connecting plate is fixedly installed together with the upper side of the grinding disc. The lower clamping assembly and the upper clamping assembly have the same structure and are arranged symmetrically.

4. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 2 or 3, characterized in that... The union assembly includes a third threaded lifting head, a double-ended bolt, and a fourth threaded lifting head. The third threaded lifting head and the fourth threaded lifting head are fixed together by the double-ended bolt. The right ends of the upper spring and the lower spring are both installed together with the left end of the third threaded lifting head. The right end of the fourth threaded lifting head is installed together with the middle part of the clamping clamp body.

5. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 1, 2, or 3, characterized in that... It also includes a saddle clamp and a U-bolt. The left end of the upper spring is movably connected to the upper suction cup through the U-bolt and the saddle clamp, and the left end of the lower spring is movably connected to the lower suction cup through the U-bolt and the saddle clamp.

6. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 4, characterized in that... It also includes a saddle clamp and a U-bolt. The left end of the upper spring is movably connected to the upper suction cup through the U-bolt and the saddle clamp, and the left end of the lower spring is movably connected to the lower suction cup through the U-bolt and the saddle clamp.

7. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 1, 2, 3, or 6, characterized in that... The connecting rod includes an upper screw cylinder, a fixing screw, and a lower screw cylinder. The upper screw cylinder is provided on the upper suction cup, and the lower screw cylinder is provided on the lower suction cup. The fixing screw is fixedly installed between the upper screw cylinder and the lower screw cylinder by a threaded connection.

8. The anti-rebound type cabinet door fixing device for power distribution rooms according to claim 4, characterized in that... The connecting rod includes an upper screw cylinder, a fixing screw, and a lower screw cylinder. The upper screw cylinder is provided on the upper suction cup, and the lower screw cylinder is provided on the lower suction cup. The fixing screw is fixedly installed between the upper screw cylinder and the lower screw cylinder by a threaded connection.

9. The anti-rebound type cabinet door fixing device for substation rooms according to claim 5, characterized in that... The connecting rod includes an upper screw cylinder, a fixing screw, and a lower screw cylinder. The upper screw cylinder is provided on the upper suction cup, and the lower screw cylinder is provided on the lower suction cup. The fixing screw is fixedly installed between the upper screw cylinder and the lower screw cylinder by a threaded connection.

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