Door opening structure of fast door opening type heading machine

Abstract

A door opening structure of a fast door opening type heading machine comprises a door body, one side edge of the door body is provided with a first fast door opening block and a second fast door opening block, and an eccentric rotating assembly is arranged between the first fast door opening block and the second fast door opening block; the eccentric rotating assembly comprises an upper rotating shaft, a handle sleeve and a lower rotating shaft, a first connecting hole is formed in the lower surface of the first quick-opening door block, and a second connecting hole is formed in the upper surface of the second quick-opening door block; an upper disc is arranged above the upper rotating shaft, an upper eccentric shaft is arranged above the upper disc, the diameter of the upper disc is smaller than that of the upper rotating shaft, and the upper disc is inserted into the first connecting hole; a lower disc is arranged below the lower rotating shaft, a lower eccentric shaft is arranged below the lower disc, the diameter of the lower disc is smaller than that of the lower rotating shaft, and the lower disc is inserted into the second connecting hole; a handle sleeve is arranged between the upper rotating shaft and the lower rotating shaft. According to the utility model, the defects in the prior art are overcome, and dust and impurities can be effectively prevented from entering the first quick-opening door block and the second quick-opening door block, so that the operation stability and the service life of the eccentric rotating assembly can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrical control box technology, specifically to a quick-opening door structure for a tunneling machine. Background Technology

[0002] Because the working environment of tunneling machines is very complex and harsh, during operation, tunneling machines not only vibrate severely, but also suffer from a lot of dust and other problems, resulting in the generally short service life of the explosion-proof and intrinsically safe electrical control boxes for tunneling machines currently on the market.

[0003] Currently available shutter-type electrical control boxes lack effective shockproof and dustproof designs, making it easy for dust to enter the door opening mechanism, causing the shutter mechanism to jam or malfunction, seriously affecting the normal operation of the tunneling machine, and also reducing its service life and increasing maintenance costs. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a quick-opening door structure for a tunneling machine, which overcomes the shortcomings of the prior art. It is reasonably designed and can effectively prevent dust and impurities from entering the first and second quick-opening door blocks, thereby ensuring the operational stability and service life of the eccentric rotation component.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quick-opening door structure for a tunneling machine includes a door body, which is movably mounted on the door frame on the front side of a power distribution box. A first quick-opening door block and a second quick-opening door block are fixedly installed on the upper and lower sides of one side of the door body, respectively. An eccentric rotating assembly is installed between the first quick-opening door block and the second quick-opening door block. A first connecting block and a second connecting block are respectively installed on the sides of the first quick-opening door block and the second quick-opening door block. The rear ends of the first connecting block and the second connecting block are rotatably connected to the door frame through hinge seats.

[0007] The eccentric rotation assembly includes an upper rotating shaft, a handle sleeve, and a lower rotating shaft. A first connecting hole is formed on the lower surface of the first quick-opening door block, and a second connecting hole is formed on the upper surface of the second quick-opening door block. An upper disc is coaxially arranged above the upper rotating shaft, and an upper eccentric shaft is offset from the axis above the upper disc. The diameter of the upper disc is smaller than the diameter of the upper rotating shaft. The upper disc is inserted into the first connecting hole, and the upper eccentric shaft is connected to a first connecting block. A lower disc is coaxially arranged below the lower rotating shaft, and a lower eccentric shaft is offset from the axis below the lower disc. The diameter of the lower disc is smaller than the diameter of the lower rotating shaft. The lower disc is inserted into the second connecting hole, and the lower eccentric shaft is connected to a second connecting block. A handle sleeve is coaxially fixed between the upper and lower rotating shafts, and a rotating handle is mounted on the outer surface of the handle sleeve.

[0008] Preferably, the first connecting block includes a first connecting shaft and a first rotating block. A first insertion hole is provided on the side of the first quick-opening door block. The first connecting hole and the first insertion hole are interconnected. One end of the first connecting shaft is inserted into the first insertion hole, and the other end of the first connecting shaft is connected to the first rotating block. The first rotating block is rotatably connected to the door frame through a hinge seat. A first limiting groove is provided on the side surface of the first connecting shaft, and the upper eccentric shaft is movably inserted into the first limiting groove.

[0009] Preferably, the second connecting block includes a second connecting shaft and a second rotating block. A second insertion hole is provided on the side of the second quick-opening door block. The second connecting hole and the second insertion hole are interconnected. One end of the second connecting shaft is inserted into the second insertion hole, and the other end of the second connecting shaft is connected to the second rotating block. The second rotating block is rotatably connected to the door frame through a hinge seat. A second limiting groove is provided on the side surface of the second connecting shaft, and the lower eccentric shaft is movably inserted into the second limiting groove.

[0010] Preferably, a U-shaped slot is formed on the lower surface of the second quick-opening door block, and the U-shaped slot is connected to the second connecting hole.

[0011] Preferably, connecting bolts are symmetrically installed on the upper and lower sides of the front side of the door body, and threaded holes are symmetrically opened on the upper and lower sides of the front side of the door frame, and the connecting bolts are movably connected in the threaded holes through threads.

[0012] Preferably, the handle sleeve is connected to the upper and lower rotating shafts respectively by two bolts at the top and bottom.

[0013] This utility model provides a quick-opening door structure for a tunneling machine, which has the following advantages: By coaxially arranging an upper disc above the upper rotating shaft, and making the diameter of the upper disc smaller than the diameter of the upper rotating shaft, when the upper disc is inserted into the first connecting hole, the upper end face of the upper eccentric shaft can cover the edge connection gap between the first connecting hole and the upper disc; similarly, when the lower disc is inserted into the second connecting hole, the lower end face of the lower eccentric shaft can cover the edge connection gap between the second connecting hole and the lower disc, thereby effectively preventing dust and impurities from entering the first and second quick-opening door blocks, thus ensuring the operational stability and service life of the eccentric rotating assembly. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0015] Figure 1 A schematic diagram of the structure of this utility model in use;

[0016] Figure 2 A schematic diagram of the structure of this utility model;

[0017] Figure 3 A partial structural schematic diagram of this utility model;

[0018] Figure 4 A schematic diagram of the structure of the second quick-opening door block and the second connecting block in this utility model;

[0019] Explanation of the labels in the diagram:

[0020] 1. Door body; 2. Electrical distribution box; 3. Door frame; 4. First quick-opening door block; 5. Second quick-opening door block; 6. First connecting block; 7. Second connecting block; 8. Upper rotating shaft; 9. Handle sleeve; 10. Lower rotating shaft; 11. Upper disc; 12. Upper eccentric shaft; 13. Lower disc; 14. Lower eccentric shaft; 15. Rotating handle; 16. U-shaped slot; 17. Connecting bolt; 61. First connecting shaft; 62. First rotating block; 71. Second connecting shaft; 72. Second rotating block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1, as Figure 1-4 As shown, a quick-opening door structure for a tunneling machine includes a door body 1, which is movably installed on the door frame 3 on the front side of the electrical distribution box 2. A first quick-opening door block 4 and a second quick-opening door block 5 are fixedly installed on the upper and lower sides of one side of the door body 1, respectively. An eccentric rotating assembly is installed between the first quick-opening door block 4 and the second quick-opening door block 5. A first connecting block 6 and a second connecting block 7 are respectively installed on the sides of the first quick-opening door block 4 and the second quick-opening door block 5. The rear ends of the first connecting block 6 and the second connecting block 7 are rotatably connected to the door frame 3 through hinge seats.

[0023] The eccentric rotation assembly includes an upper rotating shaft 8, a handle sleeve 9, and a lower rotating shaft 10. A first connecting hole is formed on the lower surface of the first quick-opening door block 4, and a second connecting hole is formed on the upper surface of the second quick-opening door block 5. An upper disc 11 is coaxially arranged above the upper rotating shaft 8, and an upper eccentric shaft 12 is arranged off-center above the upper disc 11. The diameter of the upper disc 11 is smaller than the diameter of the upper rotating shaft 8. The upper disc 11 is inserted into the first connecting hole, and the upper eccentric shaft 12 is movably connected to the first connecting block 6. A lower disc 13 is coaxially arranged below the lower rotating shaft 10, and a lower eccentric shaft 14 is arranged off-center below the lower disc 13. The diameter of the lower disc 13 is smaller than the diameter of the lower rotating shaft 10. The lower disc 13 is inserted into the second connecting hole, and the lower eccentric shaft 14 is movably connected to the second connecting block 7. A handle sleeve 9 is coaxially fixed between the upper rotating shaft 8 and the lower rotating shaft 10, and a rotating handle 15 is installed on the outer surface of the handle sleeve 9.

[0024] Working principle:

[0025] During use, by rotating the rotating handle 15, the entire eccentric rotating assembly is rotated. Then, the eccentric rotation of the upper eccentric shaft 12 and the lower eccentric shaft 14 drives the first connecting block 6 and the second connecting block 7 to rotate around the hinge seat, thereby realizing the rapid opening and closing of the door 1.

[0026] In this embodiment, an upper disk 11 is coaxially arranged above the upper rotating shaft 8, and the diameter of the upper disk 11 is smaller than the diameter of the upper rotating shaft 8. When the upper disk 11 is inserted into the first connecting hole, the upper end face of the upper eccentric shaft 12 can cover the edge connection gap between the first connecting hole and the upper disk 11. Similarly, when the lower disk 13 is inserted into the second connecting hole, the lower end face of the lower eccentric shaft 14 can cover the edge connection gap between the second connecting hole and the lower disk 13. This effectively prevents dust and impurities from entering the first quick-opening door block 4 and the second quick-opening door block 5, thereby ensuring the operational stability and service life of the eccentric rotating assembly.

[0027] In Embodiment 2, as a further preferred embodiment of Embodiment 1, the first connecting block 6 includes a first connecting shaft 61 and a first rotating block 62. The first quick-opening door block 4 has a first insertion hole on its side, and the first connecting hole and the first insertion hole are interconnected. One end of the first connecting shaft 61 is inserted into the first insertion hole, and the other end of the first connecting shaft 61 is connected to the first rotating block 62. The first rotating block 62 is rotatably connected to the door frame 3 through a hinge seat. A first limiting groove is provided on the side surface of the first connecting shaft 61, and the upper eccentric shaft 12 is movably inserted into the first limiting groove.

[0028] The second connecting block 7 includes a second connecting shaft 71 and a second rotating block 72. The second quick-opening door block 5 has a second insertion hole on its side. The second connecting hole and the second insertion hole are interconnected. One end of the second connecting shaft 71 is inserted into the second insertion hole, and the other end of the second connecting shaft 71 is connected to the second rotating block 72. The second rotating block 72 is rotatably connected to the door frame 3 through a hinge seat. The side surface of the second connecting shaft 71 has a second limiting groove, and the lower eccentric shaft 14 is movably inserted into the second limiting groove.

[0029] Therefore, through the cooperation between the upper eccentric shaft 12 and the first limiting groove, and the cooperation between the lower eccentric shaft 14 and the second limiting groove, the eccentric rotation of the upper eccentric shaft 12 can effectively drive the first rotating block 62 to rotate around the hinge seat, and the eccentric rotation of the lower eccentric shaft 14 can effectively drive the second rotating block 72 to rotate around the hinge seat, thereby achieving precise positioning and stable opening of the door body 1, ensuring smooth and safe operation.

[0030] In embodiment three, as a further preferred embodiment one, a U-shaped slot 16 is formed on the lower surface of the second quick-opening door block 5, and the U-shaped slot 16 is connected to the second connecting hole. By forming the U-shaped slot 16 on the lower surface of the second quick-opening door block 5 and making the U-shaped slot 16 connected to the second connecting hole, impurities in the second connecting hole can be discharged through the U-shaped slot 16, thereby further reducing the impact of dust on the use of the quick-opening door.

[0031] In Example 4, as a further preferred embodiment of Example 1, connecting bolts 17 are symmetrically installed on the upper and lower sides of the front side of the door body 1, and threaded holes are symmetrically opened on the upper and lower sides of the front side of the door frame 3. The connecting bolts 17 are movably connected to the threaded holes through the threads. Therefore, when the door body 1 is placed on the door frame 3, it can be tightened by aligning the connecting bolts 17 with the threaded holes of the door frame 3, ensuring that the door body 1 and the door frame 3 fit tightly together, further enhancing the sealing and stability of the overall structure, so as to reduce the problem of door panel detachment caused by high-intensity vibration.

[0032] In Example 5, as a further preferred embodiment of Example 1, the upper and lower parts of the handle sleeve 9 are connected to the upper rotating shaft 8 and the lower rotating shaft 10 respectively by two bolts. By fixing the upper and lower parts of the handle sleeve 9 to the upper rotating shaft 8 and the lower rotating shaft 10 with double bolts, and by applying thread-locking adhesive in this embodiment, the problem of the handle sleeve 9 falling off due to vibration can be effectively prevented.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-opening door structure for a tunneling machine, comprising a door body (1), wherein the door body (1) is movably installed on the door frame (3) on the front side of a power distribution box (2), characterized in that: A first quick-opening door block (4) and a second quick-opening door block (5) are fixedly installed on the top and bottom of one side of the door body (1), respectively. An eccentric rotating assembly is installed between the first quick-opening door block (4) and the second quick-opening door block (5). A first connecting block (6) and a second connecting block (7) are installed on the sides of the first quick-opening door block (4) and the second quick-opening door block (5), respectively. The rear ends of the first connecting block (6) and the second connecting block (7) are rotatably connected to the door frame (3) through hinge seats. The eccentric rotating assembly includes an upper rotating shaft (8), a handle sleeve (9), and a lower rotating shaft (10). A first connecting hole is formed on the lower surface of the first quick-opening door block (4), and a second connecting hole is formed on the upper surface of the second quick-opening door block (5). An upper disc (11) is coaxially arranged above the upper rotating shaft (8), and an upper eccentric shaft (12) is disposed off-center above the upper disc (11). The diameter of the upper disc (11) is smaller than the diameter of the upper rotating shaft (8). The upper disc (11) is inserted into the first connecting hole, and the upper eccentric shaft (12) is connected to the first connecting hole. A connecting block (6) is connected; a lower disc (13) is coaxially arranged below the lower rotating shaft (10), and a lower eccentric shaft (14) is arranged off-center below the lower disc (13). The diameter of the lower disc (13) is smaller than the diameter of the lower rotating shaft (10). The lower disc (13) is inserted into the second connecting hole. The lower eccentric shaft (14) is connected to the second connecting block (7). A handle sleeve (9) is coaxially fixed between the upper rotating shaft (8) and the lower rotating shaft (10). A rotating handle (15) is installed on the outer surface of the handle sleeve (9).

2. The quick opening door type tunneling machine door opening structure according to claim 1, characterized in that: The first connecting block (6) includes a first connecting shaft (61) and a first rotating block (62). The first quick-opening door block (4) has a first insertion hole on its side. The first connecting hole and the first insertion hole are interconnected. One end of the first connecting shaft (61) is inserted into the first insertion hole. The other end of the first connecting shaft (61) is connected to the first rotating block (62). The first rotating block (62) is rotatably connected to the door frame (3) through a hinge seat. A first limiting groove is provided on the side surface of the first connecting shaft (61). The upper eccentric shaft (12) is movably inserted into the first limiting groove.

3. The quick opening door type tunneling machine door opening structure according to claim 1, characterized in that: The second connecting block (7) includes a second connecting shaft (71) and a second rotating block (72). The second quick-opening door block (5) has a second insertion hole on its side. The second connecting hole and the second insertion hole are interconnected. One end of the second connecting shaft (71) is inserted into the second insertion hole. The other end of the second connecting shaft (71) is connected to the second rotating block (72). The second rotating block (72) is rotatably connected to the door frame (3) through a hinge seat. A second limiting groove is provided on the side surface of the second connecting shaft (71). The lower eccentric shaft (14) is movably inserted into the second limiting groove.

4. The quick opening door type tunneling machine door opening structure according to claim 1, characterized in that: The second quick-opening door block (5) has a U-shaped slot (16) on its lower surface, and the U-shaped slot (16) is connected to the second connecting hole.

5. The quick opening door type tunneling machine door opening structure according to claim 1, characterized in that: The door body (1) is symmetrically provided with connecting bolts (17) above and below the front side, and the door frame (3) is symmetrically provided with threaded holes above and below the front side, the connecting bolts (17) being movably connected in the threaded holes through threads.

6. The quick opening door type tunneling machine door opening structure according to claim 1, characterized in that: The handle sleeve (9) is connected with the upper rotating shaft (8) and the lower rotating shaft (10) through two bolts respectively above and below the handle sleeve (9).

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