Eccentric shaft translation door opening structure of box body

Abstract

The utility model discloses an eccentric shaft translation door opening structure of a box body, which relates to the technical field of explosion-proof safety equipment and comprises the box body, an explosion-proof door cover is arranged on the box body, and the explosion-proof door cover is connected with the box body through a hinge seat; the eccentric shaft is connected with the handle assembly, penetrates through the hinge seat and is used for driving the explosion-proof door cover to rotate around the hinge seat to realize opening and closing actions when the handle assembly is operated; a guide rod is arranged on the inner wall of the box body, a guide block is arranged on the back of the guide rod, the guide block is connected with the explosion-proof door cover, and check blocks used for limiting the moving range of the guide block are arranged at the two ends of the guide rod. The eccentric shafts, the hinge seats, the guide rods and the guide blocks are used for replacing traditional bolt connection, the door cover can be opened and closed by operating the handle, the bolt disassembling and assembling process is omitted, the overhauling efficiency is improved, the multiple sets of guide rods and the guide blocks act synergistically, linearity and stability of the translation track of the door cover are ensured, and deflection clamping stagnation is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof safety equipment technology, specifically an eccentric shaft translational door opening structure for a box. Background Technology

[0002] The working environments of industries such as petroleum, chemical, and coal mining are generally filled with flammable and explosive gases (such as methane and propane) and dust. Electrical sparks or high temperatures during equipment operation may cause explosions. Explosion-proof safety equipment has become a core component in ensuring safe production. Because explosion-proof safety equipment is mostly electrical control equipment, it is prone to wear and tear and malfunctions, requiring regular inspection and maintenance. Typically, the doors and access panels are tightly connected with bolts to isolate them from the external environment, thus achieving the explosion-proof function. During maintenance, all the explosion-proof bolts on the equipment must be manually removed to access the internal electrical components. After inspection and maintenance, each bolt on the explosion-proof mating surface must be manually tightened, which is very time-consuming and greatly affects production efficiency.

[0003] Traditional explosion-proof equipment doors and covers require multiple bolts to be fixed to the enclosure. During maintenance, all bolts must be removed one by one, and after maintenance, they must be tightened one by one. This is time-consuming and labor-intensive, seriously affecting production efficiency. Frequent bolt removal and installation can lead to thread wear and loosening of connections, affecting the sealing performance of the explosion-proof joint surface, increasing equipment maintenance costs and safety hazards. Bolt connections rely on the consistency of manual operation. If they are not tightened evenly, the sealing strip may be subjected to uneven force, which may cause air leakage or a decrease in explosion-proof performance after long-term use. The heavy bolt operation increases the risk of personnel operation in narrow or high-risk environments (such as flammable and explosive environments) and makes it difficult to quickly respond to sudden maintenance needs. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes an eccentric shaft translational door opening structure for a box.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an eccentric shaft translational door opening structure for a box, comprising a box, wherein an explosion-proof door cover is provided on the box, and the explosion-proof door cover is connected to the box via a hinge seat;

[0006] An eccentric shaft is connected to the handle assembly and passes through the hinge seat. It is used to drive the explosion-proof door cover to rotate around the hinge seat to achieve the opening and closing action when the handle assembly is operated.

[0007] The inner wall of the enclosure is provided with a guide rod, and a guide block is provided on the back of the guide rod. The guide block is connected to the explosion-proof door cover, and the two ends of the guide rod are provided with stops to limit the movement range of the guide block.

[0008] Preferably, there are multiple hinge seats symmetrically distributed at the connection between the housing and the explosion-proof door cover, and each hinge seat is engaged with an eccentric shaft to uniformly transmit the force generated by the rotation of the eccentric shaft, making the opening and closing action of the explosion-proof door cover more stable and reliable.

[0009] Preferably, the handle assembly includes a handle, a connecting part, and a transmission part for connecting to the eccentric shaft. The handle is connected to the transmission part through the connecting part. Operating the handle can drive the transmission part to rotate the eccentric shaft. The handle surface is provided with anti-slip texture to facilitate the operator to apply force.

[0010] Preferably, there are multiple guide rods arranged in parallel at corresponding positions inside the housing, and there are also multiple guide blocks connected to the explosion-proof door cover. The cooperation of multiple sets of guide rods and guide blocks further improves the straightness and stability of the explosion-proof door cover's movement.

[0011] Preferably, the stop is made of elastic material and its inner side is provided with a buffer pad that matches the guide rod. When the guide block contacts the stop, the buffer pad can reduce the impact force and extend the service life.

[0012] Preferably, the enclosure and the periphery of the explosion-proof door cover are provided with a sealing structure to enhance the sealing performance of the enclosure when the explosion-proof door cover is closed.

[0013] Preferably, the explosion-proof door cover is provided with an observation window, which is made of transparent explosion-proof material and its perimeter is sealed to the explosion-proof door cover, so as to facilitate observation of the internal condition of the enclosure without affecting the overall explosion-proof performance.

[0014] Preferably, the bottom of the box is provided with support feet, and the bottom of the support feet is provided with anti-slip pads, which are used to place the box stably on the corresponding work platform and prevent the box from sliding during use.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) In this utility model, the traditional bolt connection is replaced by an eccentric shaft, hinge seat, guide rod and guide block. The door cover can be opened and closed by operating the handle, eliminating the bolt disassembly and assembly process, thus improving maintenance efficiency. Multiple sets of guide rods and guide blocks work together to ensure the straightness and stability of the door cover's translational trajectory and avoid skew and jamming.

[0017] (2) The guide block and the door cover are designed to be evenly pressurized in the precision welding process of this utility model, which ensures the sealing of the joint surface during long-term use and meets the explosion-proof standard. The elastic block buffer pad absorbs the closing impact, reduces component wear, and extends the service life of the sealing structure.

[0018] (3) The internal reinforcing rib design of the hinge seat and the symmetrical distribution of multiple hinges in this utility model distribute the torque of the eccentric shaft, prevent the connection from loosening due to frequent opening and closing, extend the overall structural life, precisely control the gap between the guide rod and the guide block to avoid door cover shaking, ensure movement accuracy, the protective cover of the handle assembly prevents accidental contact with external collisions, and has dustproof and waterproof functions to reduce the risk of accidental opening, and the double-layer protection of the observation window takes into account both visibility and impact resistance to meet the needs of high-risk environments. Attached Figure Description

[0019] Figure 1 This is the main view of this utility model;

[0020] Figure 2 This is a top view of the utility model;

[0021] Figure 3 This is a schematic diagram of the hinged seat in this utility model;

[0022] Figure 4 This is a schematic diagram of the eccentric shaft used in this application.

[0023] Figure 5 This is a schematic diagram of the handle assembly in this utility model;

[0024] Figure 6 This is a schematic diagram of the guide rod used in this application.

[0025] Figure 7 This is a schematic diagram of the stop block used in this utility model;

[0026] Figure 8 This is a schematic diagram of the guide block used in this application.

[0027] Figure 9 This is a schematic diagram of the explosion-proof door cover used in this utility model;

[0028] In the diagram: 1. Housing; 2. Hinge seat; 3. Eccentric shaft; 4. Handle assembly; 5. Guide rod; 6. Stop; 7. Guide block; 8. Explosion-proof door cover. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] Please see Figure 1 - Figure 9This application provides an eccentric shaft translational opening door structure for a box, including a box 1, on which an explosion-proof door cover 8 is provided, and the explosion-proof door cover 8 is connected to the box 1 through a hinge seat 2.

[0032] Eccentric shaft 3 is connected to handle assembly 4. Eccentric shaft 3 passes through hinge seat 2 and is used to drive explosion-proof door cover 8 to rotate around hinge seat 2 to achieve opening and closing action when handle assembly 4 is operated.

[0033] The inner wall of the housing 1 is provided with a guide rod 5, and a guide block 7 is provided on the back of the guide rod 5. The guide block 7 is connected to the explosion-proof door cover 8. Both ends of the guide rod 5 are provided with stop blocks 6 to limit the movement range of the guide block 7.

[0034] Furthermore, the guide block 7 and the explosion-proof door cover 8 are fixedly connected by welding. Before welding, the connection part between the guide block 7 and the explosion-proof door cover 8 is precision machined to ensure the connection strength and accuracy after welding. At the same time, effective welding process control measures are adopted during the welding process to prevent welding deformation and ensure the connection quality between the explosion-proof door cover 8 and the guide block 7, thereby ensuring the stability and reliability of the explosion-proof door cover 8 during movement.

[0035] It should be noted that the arrangement of the box 1 can be a single door, a double door, or multiple doors; in this application, it is a double door arrangement.

[0036] In this embodiment, preferably, there are multiple hinge seats 2, symmetrically distributed at the connection between the housing 1 and the explosion-proof door cover 8, and each hinge seat 2 cooperates with the eccentric shaft 3 to uniformly transmit the force generated by the rotation of the eccentric shaft 3, so that the opening and closing action of the explosion-proof door cover 8 is more stable and reliable.

[0037] It should be noted that the hinge seat 2 is equipped with reinforcing ribs to improve its structural strength and ensure the stability of the connection between the hinge seat 2 and the housing 1 and the explosion-proof door cover 8 during long-term and frequent opening and closing operations, so as to avoid safety hazards caused by loose connections.

[0038] In this embodiment, preferably, the handle assembly 4 includes a handle, a connecting part, and a transmission part for connecting with the eccentric shaft 3. The handle is connected to the transmission part through the connecting part. Operating the handle can drive the transmission part to rotate the eccentric shaft 3. The handle surface is provided with anti-slip texture to facilitate the operator to apply force.

[0039] It should be noted that the handle assembly 4 is equipped with a protective cover, which has an operating hole that matches the shape of the handle. When operating, the handle passes through the operating hole. The protective cover can prevent external objects from colliding with the handle assembly 4 and causing misoperation. At the same time, it can also play a role in dust and water protection to a certain extent, thus extending the service life of the handle assembly 4.

[0040] During implementation, when the handle is operated, the eccentric shaft 3 rotates with the handle assembly 4, and the torque is converted into the translational opening and closing action of the explosion-proof door cover 8 through the hinge seat 2. The guide block 7 slides along the guide rod 5, and the stop block 6 limits the end point of the stroke to ensure the linearity of the door cover's movement trajectory. The welding process ensures the connection strength between the guide block 7 and the door cover. The sealing strip is compressed when closed to achieve basic sealing.

[0041] Example 2

[0042] In this embodiment, preferably, there are multiple guide rods 5, which are arranged in parallel at corresponding positions inside the housing 1. There are also multiple corresponding guide blocks 7, which are connected to the explosion-proof door cover 8 respectively. The cooperation of multiple sets of guide rods 5 and guide blocks 7 further improves the linearity and stability of the movement of the explosion-proof door cover 8.

[0043] It should be noted that the fit clearance between the guide rod 5 and the guide block 7 is precisely controlled to ensure that a small fit clearance is maintained even after long-term use. This prevents the explosion-proof door cover 8 from shaking when moving due to an excessive fit clearance, thus ensuring the sealing and explosion-proof performance of the device.

[0044] In this embodiment, preferably, the stop block 6 is made of elastic material, and its inner side is provided with a buffer pad that matches the guide rod 5. When the guide block 7 contacts the stop block 6, the buffer pad can reduce the impact force and extend the service life.

[0045] It should be noted that the elastic material is made of rubber or plastic with high temperature resistance and corrosion resistance to adapt to different working environment conditions and ensure that the stop 6 can still play a normal limiting and buffering role in harsh environments.

[0046] In this embodiment, preferably, the periphery of the enclosure 1 and the explosion-proof door cover 8 is provided with a sealing structure to enhance the sealing performance of the enclosure 1 when the explosion-proof door cover 8 is closed.

[0047] It should be noted that the sealing structure prevents internal material leakage or the entry of external foreign objects. The sealing structure includes a sealing groove on the mating surface between the housing 1 and the explosion-proof door cover 8. A sealing strip is installed in the sealing groove. The sealing strip is made of a material with good oil resistance and aging resistance, such as silicone rubber or fluororubber, to ensure the stability of the sealing performance during long-term use of the device. At the same time, the design of the sealing groove allows the sealing strip to be subjected to uniform force when the explosion-proof door cover 8 is closed, further improving the sealing effect.

[0048] In this embodiment, preferably, the explosion-proof door cover 8 is provided with an observation window. The observation window is made of transparent explosion-proof material and its perimeter is sealed to the explosion-proof door cover 8, which facilitates observation of the internal condition of the box 1 without affecting the overall explosion-proof performance.

[0049] It should be noted that the observation window is equipped with a protective net. The protective net is made of high-strength metal and is fixed to the explosion-proof door cover 8 with bolts. It can effectively prevent external objects from hitting the observation window and causing damage. At the same time, the mesh size of the protective net is reasonably designed to ensure both a good field of view and meet the protection requirements, ensuring the safety of the observation window during the use of the device.

[0050] In this embodiment, preferably, the bottom of the box 1 is provided with support feet, and the bottom of the support feet is provided with anti-slip pads, which are used to stably place the box 1 on the corresponding work platform and prevent the box 1 from sliding during use.

[0051] It should be noted that the height of the support legs is adjustable. By setting a threaded adjustment structure on the support legs, the height can be easily adjusted according to the flatness of different work platforms, ensuring that the device is placed stably. At the same time, the anti-slip pads are made of materials with a high coefficient of friction, such as rubber or Teflon, to enhance the friction between the device and the work platform and improve the stability of the device.

[0052] During implementation, multiple guide rods 5 and guide blocks 7 work together to ensure uniform force distribution during door opening and closing, preventing skewing. A buffer pad absorbs kinetic energy when the door closes, extending the lifespan of the stop block 6. A protective cover protects the handle assembly 4, exposing the handle only through the operating hole to prevent accidental activation. The protective mesh of the observation window resists external impacts, and the sealing strip maintains elasticity under high pressure, ensuring explosion-proof performance. Adjustable feet allow for leveling of the housing via threads, adapting to complex working conditions. The reinforcing rib design of the hinge seat 2 prevents loosening of connections due to frequent opening and closing, improving overall reliability.

[0053] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. An eccentric shaft translational door opening structure for a box-type enclosure, characterized in that, Includes a housing (1), on which an explosion-proof door cover (8) is provided, and the explosion-proof door cover (8) is connected to the housing (1) via a hinge seat (2); An eccentric shaft (3) is connected to the handle assembly (4). The eccentric shaft (3) passes through the hinge seat (2) and is used to drive the explosion-proof door cover (8) to rotate around the hinge seat (2) to achieve opening and closing action when the handle assembly (4) is operated. The inner wall of the box (1) is provided with a guide rod (5), and a guide block (7) is provided on the back of the guide rod (5). The guide block (7) is connected to the explosion-proof door cover (8). The two ends of the guide rod (5) are provided with blocks (6) to limit the movement range of the guide block (7).

2. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The hinge seats (2) are arranged in multiple ways and symmetrically distributed at the connection between the housing (1) and the explosion-proof door cover (8). Each hinge seat (2) is matched with the eccentric shaft (3) to uniformly transmit the force generated by the rotation of the eccentric shaft (3), so that the opening and closing action of the explosion-proof door cover (8) is more stable and reliable.

3. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The handle assembly (4) includes a handle, a connecting part, and a transmission part for connecting with the eccentric shaft (3). The handle is connected to the transmission part through the connecting part. Operating the handle can drive the transmission part to rotate the eccentric shaft (3). The handle surface is provided with anti-slip texture to facilitate the operator to apply force.

4. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The guide rods (5) are multiple and are arranged in parallel at corresponding positions inside the box (1). The corresponding guide blocks (7) are also multiple and are connected to the explosion-proof door cover (8). The cooperation of multiple sets of guide rods (5) and guide blocks (7) further improves the straightness and stability of the explosion-proof door cover (8).

5. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The stop block (6) is made of elastic material and has a buffer pad on its inner side that matches the guide rod (5). When the guide block (7) contacts the stop block (6), the buffer pad can reduce the impact force and extend the service life.

6. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The enclosure (1) and the explosion-proof door cover (8) are provided with a sealing structure around their perimeter to enhance the sealing performance of the enclosure (1) when the explosion-proof door cover (8) is closed.

7. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The explosion-proof door cover (8) is provided with an observation window. The observation window is made of transparent explosion-proof material and its perimeter is sealed to the explosion-proof door cover (8), which facilitates observation of the internal condition of the box (1) without affecting the overall explosion-proof performance.

8. The eccentric shaft translational door opening structure of a box body according to claim 1, characterized in that, The bottom of the box (1) is provided with support feet, and the bottom of the support feet is provided with anti-slip pads, which are used to place the box (1) stably on the corresponding work platform to prevent the box (1) from sliding during use.

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