A welding zone safety door locking structure

Abstract

The utility model relates to safety door switch technical field discloses a kind of welding area safety door locking structure, including working fence, the inside fixedly connected with two support blocks of working fence, the inside rotationally connected with shaft a in two The outside rotationally connected with switch door of two shaft a, the front side fixedly connected with support assembly in left switch door, the inside slidingly connected with limit block of support assembly, the outside front side fixedly connected with L type support rod of support assembly, the inside rotationally connected with extrusion assembly of L type support rod, in the utility model, rotating pressing rod drives eccentric disc rotation, limit block and sliding groove board increase friction, to limit block is locked quickly, when lock body appears abrasion or fault needs to be replaced, without large-scale disassembly to entire safety door structure, maintenance difficulty is significantly reduced, maintenance time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of safety door switch technology, and in particular to a safety door locking structure for a welding area. Background Technology

[0002] Welding area safety doors are protective devices installed at the edge of the welding work area. They are mainly used to isolate the welding work space from the external environment. During welding operations, safety doors are key equipment to ensure the safety of operators, and the reliability and ease of maintenance of their door lock structure are particularly important.

[0003] In the existing technology, the door locks of the safety doors in the welding area are mostly integrated fixed structures. Each component is fixed to the door or fence by welding, bolt groups and other rigid connections. When replacement is needed, multiple fixed components on the door must be removed first, and even part of the structure of the door or fence may need to be disassembled.

[0004] The existing device has a cumbersome disassembly process, which takes a lot of time and may cause secondary damage to the door or fence due to the disassembly operation, affecting the overall structural strength of the safety door and making it difficult to quickly restore the normal function of the safety door. In severe cases, it may affect the continuity of welding operations. Therefore, a locking structure for the safety door in the welding area is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a welding area safety door locking structure, which aims to improve the problem that some devices in the prior art cannot be quickly disassembled and repaired.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A safety door locking structure for a welding area includes a work enclosure. Two support blocks are fixedly connected inside the work enclosure. A rotating shaft a is rotatably connected inside each of the two support blocks. A switch door is rotatably connected outside each of the two rotating shafts a. A support assembly is fixedly connected to the front side of the switch door on the left side. A limit block is slidably connected inside the support assembly. An L-shaped support rod is fixedly connected to the front side of the support assembly. A pressing assembly is rotatably connected inside the L-shaped support rod.

[0008] As a further description of the above technical solution:

[0009] The support assembly includes a sliding groove plate, the rear side of which is fixedly connected to the front side of the left-side switch door, and the top of which is fixedly connected to a fixing groove plate.

[0010] As a further description of the above technical solution:

[0011] The extrusion assembly includes a rotating shaft b, which is rotatably connected to the inside of the fixed groove plate. A pressing rod is fixedly connected to the front side of the outside of the rotating shaft b, and an eccentric disk is fixedly connected to the rear side of the outside of the rotating shaft b. The outside of the eccentric disk is in contact with the top of the inside of the fixed groove plate.

[0012] As a further description of the above technical solution:

[0013] A ratchet is fixedly connected to the outer front side of the rotating shaft b, a pawl is rotatably connected to the top of the L-shaped support rod, the ratchet and the pawl are meshed with each other, a sliding column is rotatably connected inside the limiting block, and a limiting plate is fixedly connected to the left side of the sliding column.

[0014] As a further description of the above technical solution:

[0015] Both of the switch doors are fixedly connected to the front side with handles. A rotating plate a is fixedly connected to the outside of the sliding column. A groove is opened inside the rotating plate a. A limit plate is fixedly connected to the front side of the left switch door. A U-shaped vertical limit groove plate is fixedly connected to the front side of the right switch door. A caster wheel is fixedly connected to the bottom of the switch door.

[0016] As a further description of the above technical solution:

[0017] The sliding column is slidably connected to the inside of the U-shaped vertical limiting groove plate, and the rotating plate a is slidably connected to the outside of the limiting plate.

[0018] As a further description of the above technical solution:

[0019] An inclined dustproof plate is fixedly connected to the front side of the switch door on the left side, and a U-shaped horizontal limiting groove plate is fixedly connected to the front side of the switch door on the left side. A support plate is fixedly connected to the front side of the switch door on the right side, and a rotating rod is rotatably connected inside the support plate.

[0020] As a further description of the above technical solution:

[0021] A pressing plate is fixedly connected to the rear side of the switch door on the right side. A device housing is fixedly connected to the top of the support block. A connecting core is slidably connected to the left side inside the device housing. An expansion plate is fixedly connected to the outside of the connecting core. A spring is fixedly connected to the right side inside the device housing. The left side of the spring is fixedly connected to the right side of the expansion plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by rotating the pressing rod on the L-shaped support rod, the rotating shaft b is driven to rotate. The eccentric disk on the rear side of the rotating shaft b rotates with it. The eccentric structure is used to squeeze the limiting block, which increases the friction between the limiting block and the bottom sliding groove plate, thereby locking the limiting block. When the lock body is worn or malfunctions and needs to be replaced, there is no need to disassemble the entire security door structure on a large scale, which significantly reduces the maintenance difficulty and shortens the maintenance time.

[0024] 2. In this utility model, by moving the rotating rod, the rotating rod can be engaged with the U-shaped horizontal limiting groove plate to easily lock or double lock the door, which greatly improves the locking reliability; and when the door is closed, the squeezing plate pushes the connecting core to move, which can simultaneously trigger the mechanism to cut off the work in the welding chamber, avoiding the safety hazards of welding operations when the door is not locked, and ensuring operational safety. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a welding area safety door locking structure proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the opening and closing mechanism of a welding zone safety door locking structure proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the spring for opening and closing the safety door of the welding area, which is proposed in this utility model.

[0029] Legend:

[0030] 1. Work enclosure; 2. Support block; 3. Rotating shaft a; 4. Opening / closing door; 5. Sliding groove plate; 6. Fixed groove plate; 7. L-shaped support rod; 8. Rotating shaft b; 9. Pressing rod; 10. Eccentric disc; 11. Pawl; 12. Limiting block; 13. Sliding column; 14. Rotating plate a; 15. Groove; 16. Limiting disc; 17. U-shaped vertical limiting groove plate; 18. Support plate; 19. Rotating rod; 20. U-shaped horizontal limiting groove plate; 21. Limiting plate; 22. Angled dustproof plate; 23. Caster wheel; 24. Handle; 25. Extrusion plate; 26. Device housing; 27. Connecting core; 28. Spring; 29. ​​Expansion plate; 30. Ratchet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a welding area safety door locking structure, including a work enclosure 1. Two support blocks 2 are fixedly connected inside the work enclosure 1. A rotating shaft a3 is rotatably connected inside each of the two support blocks 2. A switch door 4 is rotatably connected to the outside of each of the two rotating shafts a3. The rotating shaft a3 is the core rotating shaft for the opening and closing action of the switch door 4. A support assembly is fixedly connected to the front side of the left switch door 4. A limit block 12 is slidably connected inside the support assembly. An L-shaped support rod 7 is fixedly connected to the front side of the support assembly. A pressing assembly is rotatably connected inside the L-shaped support rod 7. The support assembly includes a sliding groove plate 5, which limits the movement direction of the limit block 12. The rear side of the sliding groove plate 5 is fixedly connected to the front side of the left switch door 4. A fixed groove plate 6 is fixedly connected to the top of the sliding groove plate 5. The pressing assembly includes a rotating shaft b8, which is rotatably connected to the inside of the fixed groove plate 6. The groove plate 6 provides rotational support for the rotating shaft b8. A pressing rod 9 is fixedly connected to the front side of the rotating shaft b8, and an eccentric disk 10 is fixedly connected to the rear side of the rotating shaft b8. The eccentric disk 10 uses its eccentric structure to generate a squeezing force on the limiting block 12, so that the limiting block 12 can lock or unlock. The outside of the eccentric disk 10 is in contact with the top of the inside of the fixed groove plate 6. The pressing rod 9 can drive the squeezing component to switch the squeezing or locking state of the limiting block 12. A ratchet 30 is fixedly connected to the front side of the rotating shaft b8, which cooperates with the pawl 11 to realize the unidirectional restriction of the rotation of the rotating shaft b8, thereby maintaining the squeezing state of the eccentric disk 10 on the limiting block 12 and maintaining the locking of the limiting block 12. The top of the L-shaped support rod 7 is rotatably connected to the pawl 11. The ratchet 30 and the pawl 11 are meshed with each other. The inside of the limiting block 12 is rotatably connected to the sliding column 13, and the left side of the sliding column 13 is fixedly connected to the limiting disk 16.

[0033] Reference Figure 1 , Figure 4An inclined dustproof plate 22 is fixedly connected to the front side of the left switch door 4. The inclined dustproof plate 22 prevents dust, spatter and other impurities generated during the welding process from entering the key components of the locking structure. A U-shaped horizontal limiting groove plate 20 is fixedly connected to the front side of the left switch door 4. A support plate 18 is fixedly connected to the front side of the right switch door 4. A rotating rod 19 is rotatably connected inside the support plate 18. The rotating rod 19 assists in the locking cooperation between the right switch door 4 and the left switch door 4. A pressing plate 25 is fixedly connected to the rear side of the right switch door 4. A device housing 26 is fixedly connected to the top of the support block 2. A connecting core 27 is slidably connected to the left side inside the device housing 26. An expansion plate 29 is fixedly connected to the outside of the connecting core 27. A spring 28 is fixedly connected to the right side inside the device housing 26, providing elastic force on the expansion plate 29, thereby driving the connecting core 27 to achieve the reset function. The left side of the spring 28 is fixedly connected to the right side of the expansion plate 29.

[0034] Reference Figure 1 , Figure 2 Both switch doors 4 are fixedly connected to the front of a handle 24, which provides a gripping area for the operator. A rotating plate a14 is fixedly connected to the outside of the sliding column 13. The rotating plate a14 can rotate left and right around the sliding column 13. A groove 15 is provided inside the rotating plate a14. A limit plate 21 is fixedly connected to the front of the left switch door 4, and a U-shaped vertical limit groove 17 is fixedly connected to the front of the right switch door 4. The U-shaped vertical limit groove 17 restricts the forward and backward movement of the sliding column 13. The groove 15 and the limit plate 21 cooperate with each other to restrict the left and right lateral movement of the sliding column 13, thereby locking the left and right switch doors 4. A caster wheel 23 is fixedly connected to the bottom of the switch door 4. The outside of the sliding column 13 is slidably connected to the inside of the U-shaped vertical limit groove 17, and the inside of the rotating plate a14 is slidably connected to the outside of the limit plate 21.

[0035] Working principle: When the safety door needs to be closed, the operator pushes the two side doors 4. The doors 4 rotate around the pivot a3 on the support block 2, and the casters 23 at the bottom roll to reduce friction. During the closing process, the pressing plate 25 on the rear side of the right side door 4 gradually approaches the work enclosure 1. The pressing plate 25 contacts the connecting core 27 inside the device housing 26 and applies a rightward pushing force. The connecting core 27 drives the expansion plate 29 to move to the right, compressing the spring 28 inside the device housing 26, causing the connecting core 27 to contact the trigger, thereby stopping the work inside the welding chamber. When the door is opened, the spring 28 automatically resets the connecting core 27.

[0036] After the door 4 is closed, the operator rotates the pressing rod 9 on the L-shaped support rod 7, causing the rotating shaft b8 to rotate. The eccentric disk 10 on the rear side of the rotating shaft b8 rotates with it, using the eccentric structure to press the limiting block 12, increasing the friction between the limiting block 12 and the bottom sliding groove plate 5, thereby locking the limiting block 12. When the limiting block 12 is locked, the ratchet 30 on the front side of the rotating shaft b8 rotates synchronously, and the pawl 11 on the L-shaped support rod 7 engages with the tooth groove of the ratchet 30, preventing the rotating shaft b8 from rotating in the opposite direction. This maintains the squeezing force of the eccentric disc 10 on the limiting block 12, ensuring the limiting block 12 is stably locked. Then, the sliding column 13 is pushed, causing the rotating plate a14 and the groove 15 to move to the right together. The sliding column 13 restricts and locks the two switch doors 4 by limiting the U-shaped vertical limiting groove plate 17. When the sliding column 13 slides to the right, the rotating plate a14 rotates downward. The groove 15 inside the rotating plate a14 cooperates with the limiting plate 21 to prevent the sliding column 13 from accidentally sliding and causing the door to unlock.

[0037] When the door is locked, the operator can move the rotating rod 19 to double lock the door 4. When the door is not locked, the operator can move the rotating rod 19 to lock the door 4. The slanted dustproof plate 22 of the left side door 4 prevents welding dust and splashes from entering the core components of the locking mechanism. The outer casing 26 protects the internal connecting core 27, spring 28 and other components from external corrosion.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety door locking structure for a welding area, comprising a work enclosure (1), characterized in that: The working fence (1) has two fixed support blocks (2) inside. The two support blocks (2) are rotatably connected to a rotating shaft a (3) inside. The two rotating shafts a (3) are rotatably connected to a switch door (4) outside. The front side of the switch door (4) on the left side is fixedly connected to a support assembly. The support assembly is slidably connected to a limit block (12) inside. The front side of the support assembly is fixedly connected to an L-shaped support rod (7) outside. The L-shaped support rod (7) is rotatably connected to a pressing assembly inside.

2. The welding area safety door locking structure according to claim 1, characterized in that: The support assembly includes a sliding groove plate (5), the rear side of which is fixedly connected to the front side of the left-side switch door (4), and the top of the sliding groove plate (5) is fixedly connected to a fixing groove plate (6).

3. The welding area safety door locking structure according to claim 2, characterized in that: The extrusion assembly includes a rotating shaft b (8), which is rotatably connected to the outside of the fixed groove plate (6). A pressing rod (9) is fixedly connected to the front side of the outside of the rotating shaft b (8), and an eccentric disk (10) is fixedly connected to the rear side of the outside of the rotating shaft b (8). The outside of the eccentric disk (10) is in contact with the top inside of the fixed groove plate (6).

4. The welding area safety door locking structure according to claim 1, characterized in that: A ratchet (30) is fixedly connected to the front side of the rotating shaft b (8), and a pawl (11) is rotatably connected to the top of the L-shaped support rod (7). The ratchet (30) and the pawl (11) are meshed with each other. A sliding column (13) is rotatably connected inside the limiting block (12), and a limiting disk (16) is fixedly connected to the left side of the sliding column (13).

5. The welding area safety door locking structure according to claim 4, characterized in that: A handle (24) is fixedly connected to the front side of both of the switch doors (4). A rotating plate a (14) is fixedly connected to the outside of the sliding column (13). A groove (15) is opened inside the rotating plate a (14). A limiting plate (21) is fixedly connected to the front side of the left switch door (4). A U-shaped vertical limiting groove plate (17) is fixedly connected to the front side of the right switch door (4). A caster wheel (23) is fixedly connected to the bottom of the switch door (4).

6. The welding area safety door locking structure according to claim 5, characterized in that: The sliding column (13) is slidably connected to the inside of the U-shaped vertical limiting groove plate (17), and the rotating plate a (14) is slidably connected to the outside of the limiting plate (21).

7. The welding area safety door locking structure according to claim 1, characterized in that: An oblique dustproof plate (22) is fixedly connected to the front side of the left-side switch door (4), a U-shaped horizontal limiting groove plate (20) is fixedly connected to the front side of the left-side switch door (4), and a support plate (18) is fixedly connected to the front side of the right-side switch door (4). A rotating rod (19) is rotatably connected inside the support plate (18).

8. The welding area safety door locking structure according to claim 1, characterized in that: A pressing plate (25) is fixedly connected to the rear side of the switch door (4) on the right side. A device housing (26) is fixedly connected to the top of the support block (2). A connecting core (27) is slidably connected to the left side inside the device housing (26). An expansion plate (29) is fixedly connected to the outside of the connecting core (27). A spring (28) is fixedly connected to the right side inside the device housing (26). The left side of the spring (28) is fixedly connected to the right side of the expansion plate (29).

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