Electrical explosion-proof device for electric loader

Abstract

The invention relates to the technical field of electric loaders, in particular to an electric explosion-proof device for an electric loader, which comprises an explosion-proof box, a heat dissipation assembly and a protection assembly, and is characterized in that a plurality of groups of heat dissipation frames with heat dissipation fans are arranged in the explosion-proof box, and heat dissipation holes are formed in a partition plate and a bottom plate; heat generated by the electric control equipment can be effectively dissipated, stable operation of the equipment is guaranteed, and potential safety hazards caused by overheating are reduced. The upper and lower openings are designed to be matched with the heat dissipation assembly to form a good air circulation channel and improve the heat dissipation efficiency; the sealing plate of the protection assembly and the heat dissipation frame are in drawer type sliding connection, installation and disassembly are convenient, and maintenance and overhaul of equipment in the explosion-proof box are convenient. Through the design of the fixing piece and the cooperation of the worm gear, the worm and the screw rod, the sealing plate and the explosion-proof box are stably connected, the operation is simple, the insertion block can be inserted and pulled out only by rotating the handle, and the sealing plate is convenient to mount and dismount.

Description

Technical Field

[0001] The present invention relates to the technical field of electric loaders, in particular to an electrical explosion-proof device for electric loaders. Background Art

[0002] Electric loaders are primarily composed of an electric drive system, hydraulic system, working device, travel device, and control system. The electric drive system typically uses an electric motor as its power source, which converts electrical energy into mechanical energy to drive the various components of the loader. The hydraulic system uses a hydraulic pump to pressurize the hydraulic oil, driving the hydraulic cylinder and hydraulic motor to achieve lifting, flipping, and traveling movements of the loader. The working device includes a bucket, boom, and rocker arm, which are used for loading and unloading materials.

[0003] The electronic control equipment of electric loaders is often integrated into a single location, generating heat during operation and potentially creating hazards. Conventional explosion-proof devices for these devices are difficult to remove, and dust screens are prone to dust accumulation, which reduces heat dissipation efficiency and increases the potential for safety hazards during operation. Therefore, the present invention designs an electrical explosion-proof device for electric loaders to achieve heat dissipation and dust prevention. Summary of the Invention

[0004] The object of the present invention is to provide an electrical explosion-proof device for an electric loader, aiming to solve the above-mentioned problems.

[0005] The present invention provides an electrical explosion-proof device for an electric loader, comprising an explosion-proof box, a heat dissipation component, and a protection component. Support legs are symmetrically provided on the left and right sides below the explosion-proof box, and the support legs are fixed to the electric loader body.

[0006] The heat dissipation assembly includes a heat dissipation frame and a heat dissipation fan. Several groups of partitions are provided in the explosion-proof box. A heat dissipation frame is provided on the front between two adjacent groups of upper and lower partitions. A heat dissipation fan is provided on the heat dissipation frame. A front opening is provided on the front of the explosion-proof box, and a lower opening is provided below the explosion-proof box.

[0007] The protective assembly includes a closing plate, a fixing part and a dustproof net. The closing plate includes a front plate that closes the front opening and a bottom plate that closes the lower opening. The bottom plate is connected to the heat dissipation frame in a drawer-like sliding manner. The front plate is provided with a plurality of groups of heat dissipation holes that are compatible with the heat dissipation frame. A dustproof net is provided on the heat dissipation holes. A fixing part connected to the side wall of the explosion-proof box is also provided above the bottom plate. Several groups of heat dissipation holes are provided on both the partition plate and the bottom plate.

[0008] Preferably, the fixing part includes a handle, a cover body, a worm gear, a worm, a screw and an insert block. The cover body is fixed to the base plate. The worm gear, worm and screw are arranged in the cover body. The worm gear is threadedly connected to the worm. Storage grooves are provided on the left and right sides of the cover body. Screws that pass through the corresponding storage grooves are provided on the left and right sides of the worm gear. Insert blocks that are threadedly connected to the screws are also provided in the storage grooves. The insert blocks and the storage grooves are both rectangular. The worm passes through the cover body and the base plate and is connected to the handle. Sockets that are compatible with the insert blocks are provided on the left and right sides of the explosion-proof box.

[0009] Preferably, the insert block is further provided with a screw hole penetrating the side wall of the explosion-proof box at one end away from the screw rod, and the insert block is further provided with a bolt threadedly connected to the screw hole, and the bolt is connected to the insert block through a nut.

[0010] Preferably, the insert block has an inverted T-shape in a front view cross-section, and the end of the insert block with the screw hole is smaller than the other end.

[0011] Preferably, friction lines are provided under the handle.

[0012] Preferably, the front plate is arranged below the top wall of the explosion-proof box, and two groups of symmetrically arranged slide grooves are also provided on the front of the front plate, and the heat dissipation holes are provided between the two groups of slide grooves. The protective component also includes a slide plate and a rain shield, and the back side of the rain shield is provided with two groups of slide plates slidably connected to the slide grooves.

[0013] Preferably, a positioning frame is further provided on the back side of the front plate and is plugged into the front edge of the partition.

[0014] Preferably, the positioning frame includes a frame body surrounding the front edge of the partition.

[0015] Preferably, a seal is provided at the joint of the explosion-proof box.

[0016] Preferably, the surface of the explosion-proof box is provided with an antistatic coating.

[0017] Compared with the prior art, the present invention provides an electrical explosion-proof device for an electric loader, which has the following beneficial effects:

[0018] This electrical explosion-proof device for electric loaders features multiple cooling frames with cooling fans within the explosion-proof enclosure. The partitions and bottom plates also have cooling holes, effectively dissipating heat generated by the electronically controlled equipment, ensuring stable operation and minimizing safety hazards caused by overheating. The upper and lower openings, combined with the cooling components, create a good air flow channel, improving heat dissipation efficiency.

[0019] The enclosure plate and heat dissipation frame of the protective assembly are connected by a drawer-style sliding connection, which is easy to install and remove, and convenient for maintenance and repair of the equipment inside the explosion-proof box. The design of the fixing parts, through the cooperation of the worm gear, worm and screw, makes the connection between the enclosure plate and the explosion-proof box stable and easy to operate. The plug can be inserted and removed by simply turning the handle, which facilitates the installation and removal of the enclosure plate.

[0020] Dust screens installed on the front panel's heat dissipation holes effectively prevent dust from entering the explosion-proof enclosure, reducing the risk of heat dissipation and equipment damage due to dust accumulation, thereby extending the equipment's service life. The sliding connection between the base panel and the heat dissipation frame allows the dust screens to be cleaned or replaced when the enclosing panel is removed, maintaining dust protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0022] Figure 1 It is a schematic front view of an electrical explosion-proof device for an electric loader according to the present invention;

[0023] Figure 2 This is a schematic diagram of the main view of the explosion-proof box of the present invention;

[0024] Figure 3 This is a bottom view schematic diagram of the explosion-proof box of the present invention;

[0025] Figure 4 It is an explosion diagram of the present invention;

[0026] Figure 5 It is a partial explosion schematic diagram of the present invention.

[0027] In the figure: 1. Explosion-proof box; 2. Support legs; 3. Heat dissipation frame; 4. Heat dissipation fan; 5. Partition; 6. Bottom plate; 7. Front plate; 8. Dust screen; 9. Handle; 10. Cover; 11. Worm gear; 12. Worm; 13. Screw; 14. Insert; 15. Bolt; 16. Nut; 17. Friction groove; 18. Slide plate; 19. Rain shield; 20. Positioning frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] See also Figure 1-Figure 5 The present invention provides an electrical explosion-proof device for an electric loader, comprising: an explosion-proof box 1, a heat dissipation component and a protection component. Support legs 2 are symmetrically arranged on the left and right sides below the explosion-proof box 1, and the support legs 2 are fixed on the electric loader body.

[0033] The heat dissipation assembly includes a heat dissipation frame 3 and a heat dissipation fan 4. Several groups of partitions 5 are arranged in the explosion-proof box 1. A heat dissipation frame 3 is arranged on the front between the upper and lower adjacent groups of partitions 5. A heat dissipation fan 4 is arranged on the heat dissipation frame 3. A front opening is provided on the front of the explosion-proof box 1, and a lower opening is provided at the bottom of the explosion-proof box 1.

[0034] When the electric loader is operating, the heat generated by its electronically controlled equipment is transferred to the surrounding air. Multiple sets of heat dissipation frames 3 are set up in the explosion-proof box 1, and the heat dissipation fans 4 on each set of heat dissipation frames 3 start working, carrying the heat out of the explosion-proof box 1 through air flow. The front opening and lower opening of the explosion-proof box 1 cooperate with the heat dissipation fans 4 to form an air circulation channel. Hot air is discharged from the front opening at the top, and cold air enters from the lower opening at the bottom, continuously circulating to achieve efficient heat dissipation. At the same time, the heat dissipation holes on the partition 5 and the bottom plate 6 further promote air circulation in the box, dissipating heat more evenly, ensuring stable operation of the equipment and reducing safety hazards caused by overheating.

[0035] The protective assembly includes a closing plate, a fixing part and a dustproof net 8. The closing plate includes a front plate 7 that closes the front opening and a bottom plate 6 that closes the lower opening. The bottom plate 6 is connected to the heat dissipation frame 3 in a drawer-type sliding manner. The front plate 7 is provided with several groups of heat dissipation holes that are compatible with the heat dissipation frame 3. A dustproof net 8 is provided on the heat dissipation holes. A fixing part connected to the side wall of the explosion-proof box 1 is also provided above the bottom plate 6. Several groups of heat dissipation holes are provided on both the partition 5 and the bottom plate 6.

[0036] The heat dissipation holes on the front panel 7 are equipped with dust screens 8. When air passes through the heat dissipation holes and enters and exits the explosion-proof box 1, the dust screens 8 filter dust from the air, preventing dust from entering the explosion-proof box 1 and accumulating on the electronic control equipment, affecting heat dissipation and damaging the equipment. The bottom panel 6 is connected to the heat dissipation frame 3 in a drawer-like sliding connection. When the dust screen 8 needs to be cleaned or replaced, the closing plate can be pulled out as a whole, facilitating access to the dust screen 8 and maintaining a good dust-proof effect. Once the bottom panel 6 is stably connected to the explosion-proof box 1, the closing plate can be easily removed and installed using the fixings.

[0037] In this embodiment, the present invention relates to an electrical explosion-proof device for an electric loader. This device is designed to provide a safe and efficient heat dissipation and protection system to ensure the safe operation of the electric loader in flammable and explosive environments. The device comprises the following main components: an explosion-proof box, a heat dissipation assembly, and a protection assembly.

[0038] The explosion-proof box is the core of the entire device. Made of high-strength, corrosion-resistant materials, it effectively resists external impacts and internal pressure, ensuring that no secondary damage is caused to the surrounding environment in the event of an explosion. Legs 2 are symmetrically positioned on the left and right sides of the explosion-proof box 1. These legs 2 are fixed to the electric loader body to ensure stability and facilitate installation.

[0039] The heat dissipation component is a key part to ensure the normal operation of electrical equipment. It includes a heat dissipation frame and a heat dissipation fan. The heat dissipation frame 3 is set in the explosion-proof box 1, between two adjacent groups of upper and lower partitions 5. The function of the partition 5 is to effectively divide the internal space of the explosion-proof box to optimize the heat dissipation effect. A heat dissipation fan 4 is set on the heat dissipation frame 3 to promote air circulation and remove internal heat. A front opening is set on the front of the explosion-proof box 1 to facilitate the heat dissipation fan 4 to draw in external cold air; a lower opening is set at the bottom of the explosion-proof box 1 to exhaust hot air.

[0040] The protective assembly is responsible for protecting the electrical equipment from the external environment, and includes a closing plate, fixings and a dust screen. The closing plate includes a front plate 7 that closes the front opening and a bottom plate 6 that closes the lower opening. The bottom plate 6 is connected to the heat dissipation frame 3 in a drawer-like sliding manner, which is convenient for maintenance and cleaning. The front plate 7 is provided with a plurality of groups of heat dissipation holes that are compatible with the heat dissipation frame 3, and a dust screen 8 is provided on the heat dissipation holes to prevent dust and debris from entering the interior of the explosion-proof box. A fixing piece connected to the side wall of the explosion-proof box 1 is also provided above the bottom plate 6 to ensure the stability of the protective assembly. Both the partition 5 and the bottom plate 6 are provided with a plurality of groups of heat dissipation through holes, which not only help to dissipate heat, but also can prevent the internal electrical components from being directly impacted to a certain extent.

[0041] In some embodiments of the present application, the fixing part includes a handle 9, a cover body 10, a worm gear 11, a worm 12, a screw 13 and an insert 14. The cover body 10 is fixed on the base plate 6. The worm gear 11, the worm 12 and the screw 13 are arranged in the cover body 10. The worm gear 11 is threadedly connected to the worm 12. Storage grooves are provided on the left and right sides of the cover body 10. Screws 13 that pass through the corresponding storage grooves are provided on the left and right sides of the worm gear 11. An insert 14 that is threadedly connected to the screw 13 is also provided in the storage groove. The insert 14 and the storage groove are both rectangular. The worm 12 passes through the cover body 10 and the base plate 6 and is connected to the handle 9. Sockets that are compatible with the insert 14 are provided on the left and right sides of the explosion-proof box 1.

[0042] In this embodiment, the fixings are designed to ensure the safety and stability of the explosion-proof box. Specifically, the fixings include the following parts: Handle 9: This is a user-operated component used to manually adjust the rotation of the worm 12, thereby controlling the movement of the worm wheel 11 and the screw 13. Cover 10: It is a major structural component used to fix and protect the internal mechanical components. Cover 10 is firmly fixed to the base plate 6 to ensure the stability of the entire device. Worm wheel 11: This is a gear assembly that is threadedly connected to the worm 12 and is used to convert the rotational motion of the worm into its own rotational motion, thereby achieving linear motion with the screw 13. Worm 12: This is a spiral shaft that is threadedly connected to the worm wheel 11. When the worm rotates, the worm wheel will move accordingly, thereby driving the screw 13 to perform linear motion. Screw 13: This is a threaded shaft that is threadedly connected to the worm wheel 11. When the worm wheel rotates, the screw will move axially, which is used to push the plug 14 for positioning. Insert 14: This is a movable component that, through a threaded connection to screw 13, can move along the screw. It is inserted into sockets on either side of the explosion-proof box to secure the box. Receiving slots are provided on the left and right sides of the housing 10. These slots accommodate the insert 14 and allow it to move within them. Both the slots and the insert 14 are rectangular in design to ensure a tight fit and prevent the insert from shifting during operation. The worm 12 passes through the housing 10 and the base plate 6, allowing the handle 9 to be mounted on the other side of the base plate 6 for easy operation. The handle 9 is connected to the worm 12, and the user can control the rotation of the worm by rotating the handle. Sockets compatible with the insert 14 are provided on the left and right sides of the explosion-proof box 1. These sockets receive the insert 14. Once the insert 14 is in place, it effectively locks the explosion-proof box, preventing it from accidentally opening or moving.

[0043] When the closing plate needs to be installed, the handle 9 with friction grooves 17 is turned to rotate the worm 12. Since the worm wheel 11 is threadedly connected to the worm 12, the rotation of the worm 12 causes the worm wheel 11 to rotate within the housing 10. The screws 13 on either side of the worm wheel 11 rotate along with the worm wheel 11. Under the action of the rotation of the screws 13, the plugs 14 in the receiving groove, which are threadedly connected to the screws 13, move along the receiving groove toward the sockets on the side walls of the explosion-proof box 1 until the plugs 14 are inserted into the sockets on both sides of the explosion-proof box 1, thus achieving a stable connection between the closing plate and the explosion-proof box 1. To disassemble, the handle 9 is rotated in the opposite direction, and the plugs 14 are removed from the sockets, making it easy to remove the closing plate.

[0044] In some embodiments of the present application, the end of the insert 14 away from the screw 13 is further provided with a screw hole that penetrates the side wall of the explosion-proof box 1. The insert 14 is further provided with a bolt 15 that is threadedly connected to the screw hole. The bolt 15 is connected to the insert 14 via a nut 16. This structure can still be used normally in a vibration environment.

[0045] In this embodiment, the end of the insert 14, remote from the screw 13, is provided with a screw hole extending through the side wall of the explosion-proof box 1. A bolt 15 is also provided on the insert 14, threadedly connected to the screw hole. Bolt 15 is connected to the insert 14 via a nut 16. This design ensures that even under strong vibration conditions, the connection between the insert 14 and the side wall of the explosion-proof box 1 remains secure and prevents loosening or dislodging due to vibration. The threaded connection between the bolt 15 and the screw hole and the use of the nut 16 further enhance the reliability of the connection, ensuring stable operation of the device in harsh environments.

[0046] In some embodiments of the present application, the front cross-section of the insert block 14 is an inverted T-shape, and the end of the insert block 14 with the screw hole is smaller than the other end.

[0047] In some embodiments of the present application, friction lines 17 are provided under the handle 9 .

[0048] The explosion-proof box 1 is fixed to the electric loader body through the support legs 2. Secondly, the plug block 14 of the fixing piece fits tightly with the socket, and the plug block 14 is further fixed by bolts 15 and nuts 16. It is not easy to loosen in a vibration environment, ensuring the stability of the connection between the closing plate and the explosion-proof box 1.

[0049] In some embodiments of the present application, the front panel 7 is arranged below the top wall of the explosion-proof box 1, and two groups of symmetrically arranged slide grooves are provided on the front of the front panel 7, and the heat dissipation holes are provided between the two groups of slide grooves. The protective component also includes a slide plate 18 and a rain shield 19, and the back side of the rain shield 19 is provided with two groups of slide plates 18 that are slidably connected to the slide grooves.

[0050] In some embodiments of the present application, a positioning frame 20 is further provided on the back side of the front plate 7 and is plugged into the front edge of the partition 5 .

[0051] In some embodiments of the present application, the positioning frame 20 includes a frame body surrounding the front edge of the partition 5 .

[0052] In this embodiment, a front panel 7 is provided below the top wall of the explosion-proof box 1. Two sets of symmetrically arranged chutes are designed on the front of the front panel 7. These chutes not only provide structural support but also provide locations for heat dissipation holes. The heat dissipation holes are cleverly positioned between the two sets of chutes to ensure efficient heat dissipation while maintaining the overall aesthetics of the protective assembly. Furthermore, the protective assembly includes a slide plate 18 and a rain shield 19. Two sets of slide plates 18 are provided on the back side of the rain shield 19. These slide plates are slidably connected to the chutes on the front panel 7, allowing the rain shield 19 to be flexibly installed and removed to adapt to different usage environments.

[0053] The back side of the front panel 7 is also specially designed with a positioning frame 20. This positioning frame 20 is designed to engage with the front edge of the partition 5 to ensure the correct position and stability of the partition 5 within the explosion-proof box. The positioning frame 20 surrounds the front edge of the partition 5 to form a frame. This not only strengthens the connection between the partition 5 and the front panel 7, but also improves the stability of the overall structure. Through this design, the explosion-proof box 1 not only ensures safety performance, but also improves the convenience of assembly and maintenance.

[0054] When installing the closing plate, the positioning frame 20 can guide the front plate 7 to be accurately installed in the appropriate position, ensuring that the heat dissipation holes correspond to the heat dissipation frame 3, improving the installation efficiency, and after removing the slide plate 18 and the rain shield 19, it is convenient to clean the dust net 8. The back side of the front plate 7 is also provided with a positioning frame 20 that is plugged into the front edge of the partition 5, further ensuring the stability of the connection between the front plate 7 and the partition 5, and the front plate 7 is limited between the side wall and the top wall of the explosion-proof box 1 to ensure its assembly stability.

[0055] In some embodiments of the present application, a seal is provided at the joint of the explosion-proof box 1 of the electrical explosion-proof device.

[0056] It is understood that the provision of the seal effectively prevents external impurities such as moisture and dust from entering the explosion-proof box 1, thereby ensuring the normal operation of the electrical components within the electrical explosion-proof device and improving the safety and reliability of the electrical explosion-proof device. Furthermore, the seal also acts as a buffer, reducing damage to the explosion-proof box 1 when subjected to external impacts, thereby further extending the service life of the electrical explosion-proof device.

[0057] In some embodiments of the present application, the surface of the explosion-proof box 1 of the electrical explosion-proof device is provided with an antistatic coating.

[0058] It is understood that the provision of an antistatic coating can effectively prevent damage to electrical components caused by static electricity accumulation, further enhancing the safety performance of the electrical explosion-proof device. Furthermore, the antistatic coating can enhance the wear resistance and corrosion resistance of the surface of the explosion-proof box 1, improving the overall durability of the electrical explosion-proof device. This antistatic coating material is environmentally friendly, low-cost, and easy to apply, providing an additional protective barrier for the electrical explosion-proof device and ensuring the stable operation of the electric loader in complex environments.

[0059] In some embodiments of the present application, the surface of the explosion-proof box 1 of the electrical explosion-proof device is further provided with a corrosion-resistant coating.

[0060] It is understandable that by providing a corrosion-resistant coating on the surface of the explosion-proof box of the electrical explosion-proof device, the corrosion resistance of the explosion-proof box can be significantly improved, effectively resisting the erosion of various corrosive substances and extending the service life of the explosion-proof box.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. An electrical explosion-proof device for an electric loader, characterized in that: It comprises an explosion-proof box (1), a heat dissipation component and a protection component. Support legs (2) are symmetrically arranged on the left and right sides below the explosion-proof box (1), and the support legs (2) are fixed on the electric loader body. The heat dissipation assembly comprises a heat dissipation frame (3) and a heat dissipation fan (4); a plurality of groups of partitions (5) are provided in the explosion-proof box (1); a heat dissipation frame (3) is provided on the front between two adjacent groups of partitions (5); a heat dissipation fan (4) is provided on the heat dissipation frame (3); a front opening is provided on the front of the explosion-proof box (1); and a lower opening is provided below the explosion-proof box (1); The protective assembly comprises a closing plate, a fixing member and a dustproof net (8); the closing plate comprises a front plate (7) closing a front opening and a bottom plate (6) closing a lower opening; the bottom plate (6) is connected to the heat dissipation frame (3) in a drawer-type sliding manner; the front plate (7) is provided with a plurality of groups of heat dissipation holes adapted to the heat dissipation frame (3); the heat dissipation holes are provided with a dustproof net (8); a fixing member connected to the side wall of the explosion-proof box (1) is further provided above the bottom plate (6); and the partition (5) and the bottom plate (6) are both provided with a plurality of groups of heat dissipation holes.

2. The electrical explosion-proof device for an electric loader according to claim 1, characterized in that: The fixing member comprises a handle (9), a cover (10), a worm wheel (11), a worm (12), a screw (13) and an insert (14); the cover (10) is fixed on the base plate (6); the worm wheel (11), the worm (12) and the screw (13) are arranged in the cover (10); the worm wheel (11) is threadedly connected to the worm (12); the cover (10) is provided with receiving grooves on the left and right sides; the worm wheel (11) is provided with screws (13) passing through the corresponding receiving grooves on the left and right sides; an insert (14) threadedly connected to the screw (13) is further arranged in the receiving groove; the insert (14) and the receiving groove are both rectangular; the worm (12) passes through the cover (10) and the base plate (6) and is connected to the handle (9); and the explosion-proof box (1) is provided with sockets adapted to the insert (14) on the left and right sides.

3. The electrical explosion-proof device for an electric loader according to claim 2, characterized in that: The insert (14) is further provided with a screw hole penetrating the side wall of the explosion-proof box (1) at one end away from the screw rod (13), and the insert (14) is further provided with a bolt (15) threadedly connected to the screw hole, and the bolt (15) is connected to the insert (14) via a nut (16).

4. The electrical explosion-proof device for an electric loader according to claim 3, characterized in that: The insert block (14) has an inverted T-shape in front view, and one end of the insert block (14) with a screw hole is smaller than the other end.

5. The electrical explosion-proof device for an electric loader according to claim 2, characterized in that: A friction pattern (17) is provided below the handle (9).

6. The electrical explosion-proof device for an electric loader according to claim 1, characterized in that: The front plate (7) is arranged below the top wall of the explosion-proof box (1); the front plate (7) is further provided with two groups of symmetrically arranged slide grooves; the heat dissipation holes are provided between the two groups of slide grooves; the protective assembly further comprises a slide plate (18) and a rain shield (19); the back side of the rain shield (19) is provided with two groups of slide plates (18) slidably connected to the slide grooves.

7. The electrical explosion-proof device for an electric loader according to claim 1, characterized in that: The back side of the front plate (7) is also provided with a positioning frame (20) which is plugged into the front edge of the partition (5).

8. The electrical explosion-proof device for an electric loader according to claim 7, characterized in that: The positioning frame (20) comprises a frame body surrounding the front edge of the partition (5).

9. The electrical explosion-proof device for an electric loader according to claim 1, characterized in that: Sealing elements are provided at the joints of the explosion-proof box (1).

10. The electrical explosion-proof device for an electric loader according to claim 1, characterized in that: The surface of the explosion-proof box (1) is provided with an antistatic coating.

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