Roadway repairing machine with quick replacement of digging head for coal mine

Abstract

The utility model relates to mining industry technical field and disclose a kind of coal mine roadway repair machine with quick replacement excavator head, including roadway repair machine body, mounting seat and excavator head body, the one side fixed mounting of mounting seat close to excavator head body is equipped with locating block, the one side of mounting seat away from excavator head body is equipped with through-hole one. The coal mine roadway repair machine with quick replacement excavator head, by the cooperation of locating block and locating groove and mounting seat and guide slot, the quick positioning of excavator head body can be realized, then cooperate screw rod, through-hole one, through-hole two and nut, the quick fixing of excavator head body can be realized, after long time use, it is convenient to overhaul or replace, by the cooperation of plug and slot and bolt, threaded hole one and threaded hole two, the quick fixing of bucket tooth can be realized, when bucket tooth is seriously worn, entire excavator head body does not need to be replaced, just replace bucket tooth, significantly reduce replacement time and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of mining technology, specifically to a coal mine roadway repair machine with a quick-change excavator head. Background Technology

[0002] Coal mine roadway repair machines are powerful equipment for coal mine roadway maintenance. Among them, those with quick-change excavator heads are particularly outstanding. They are mainly used for the repair of coal roadways, semi-coal-rock roadways, and full-rock roadways. Their excavator heads can be quickly interchanged with milling heads, breakers, beam supports, etc. via hydraulic quick-change devices. A single person can complete the operation within 2 minutes. This equipment can meet the needs of various maintenance operations such as excavation, cutting, crushing, and side excavation. It can also efficiently crush large pieces of coal gangue for transportation, greatly improving the efficiency and flexibility of roadway repair work, reducing labor costs, and ensuring the efficient implementation of coal mine roadway repair work.

[0003] Chinese Utility Model Patent Publication No. CN216922120U discloses a roadway repair machine. The specification of this roadway repair machine discloses that by setting the working part as a three-section boom structure, the flexibility of the working part is improved and the working space of the roadway repair machine is expanded, thereby enabling the roadway repair machine to achieve more operating functions. However, this roadway repair machine does not have a bucket tooth installation structure designed. When the bucket teeth are severely worn, the entire digging head body needs to be replaced, resulting in high maintenance costs. Moreover, the lack of a digging head body installation structure makes it inconvenient to inspect or replace it after long-term use, resulting in poor practicality and hindering its widespread use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a coal mine roadway repair machine with a quick-change digging head. It can effectively solve the problems of existing technology that does not have an installation structure for the bucket teeth, which requires the replacement of the entire digging head body when the bucket teeth are severely worn, resulting in high maintenance costs. Furthermore, the lack of an installation structure for the digging head body makes it inconvenient to inspect or replace it after long-term use, resulting in poor practicality and difficulty in widespread use.

[0005] The technical solution adopted by this utility model is: a coal mine roadway repair machine with quick-change excavator head, including a roadway repair machine body, a mounting base, and an excavator head body. A positioning block is fixedly installed on the side of the mounting base near the excavator head body. A through hole one is opened on the side of the mounting base away from the excavator head body. A positioning groove and a through hole two are opened on the end of the excavator head body near the mounting base. A screw adapted to the through hole one and through hole two is inserted and installed on the side of the mounting base away from the excavator head body. A nut is threadedly connected to the outer wall of the screw. A fixing block is fixedly installed on the end of the excavator head body near the mounting base. A guide groove is opened on the outer wall of the fixing block. A reinforcing rib one and a wear-resistant liner are fixedly installed on the outer wall of the excavator head body. A reinforcing rib two is fixedly installed on the inner wall of the excavator head body. Bucket teeth are provided on the end of the excavator head body away from the mounting base.

[0006] Preferably, the positioning block and the positioning groove are plug-in installed, the cross-section of the positioning block is a "T" shaped structure, and the mounting base and the guide groove are plug-in installed.

[0007] Using the above technical solution, workers insert the mounting base into the guide groove and the positioning block into the positioning groove, which enables rapid positioning of the excavator head body. Without complicated calibration operations, the relative position of the flushing head and the mounting base can be ensured to be accurate, improving installation efficiency, reducing labor and time costs, and making it highly practical.

[0008] Preferably, the screw passes through through hole one and through hole two, the diameters of through hole one and through hole two are the same, and the nut abuts against the digging head body.

[0009] With the above technical solution, after the excavator body is quickly positioned, the workers insert the screw through the first and second through holes, and then connect the nut to the screw thread, so that the nut abuts against the excavator body, which can quickly fix the excavator body. After long-term use, it is convenient to inspect or replace it.

[0010] Preferably, a plug is fixedly installed at one end of the bucket tooth near the digging head body, a threaded hole one is opened at one end of the bucket tooth near the digging head body, a slot and a threaded hole two are opened at one end of the digging head body near the bucket tooth, and a bolt adapted to the threaded hole one and the threaded hole two is threadedly connected at one end of the bucket tooth near the digging head body. The plug and the slot are plugged in, and the cross section of the plug has a trapezoidal structure.

[0011] Using the above technical solution, workers can insert the insert block into the slot, which can quickly position the bucket teeth and reduce the alignment time when installing the bucket teeth.

[0012] Preferably, the bolt extends through threaded hole one into threaded hole two, and threaded hole one and threaded hole two have the same diameter.

[0013] With the above technical solution, after the bucket teeth are quickly positioned, the workers can then insert bolts through threaded hole one and extend them into threaded hole two to achieve rapid fixing of the bucket teeth. When the bucket teeth are severely worn, it is not necessary to replace the entire excavator head body; only the bucket teeth need to be replaced, which significantly reduces maintenance costs and replacement time.

[0014] Preferably, there are multiple identical wear-resistant liners, and the multiple wear-resistant liners are distributed at equal intervals.

[0015] The above technical solution, through the design of multiple wear-resistant liners, significantly improves the wear resistance of the excavator body, extends its service life, reduces the replacement frequency caused by wear, and indirectly improves the efficiency of operation.

[0016] Preferably, the cross-sections of the first reinforcing rib and the second reinforcing rib are both arc-shaped, and the bottom end of the excavator body is arc-shaped.

[0017] Through the above technical solution, the overall strength of the excavator body is enhanced by the design of reinforcing rib one and reinforcing rib two. The "arc" structure design at the bottom of the excavator body disperses the impact force on the bottom of the excavator body, avoids stress concentration cracking at right angles, further improves the structural stability of the excavator body, and extends its service life.

[0018] Compared with the prior art, this utility model provides a coal mine roadway repair machine with quick-change excavator head, which has the following beneficial effects:

[0019] 1. This coal mine roadway repair machine with quick-change excavator head can quickly position the excavator head body through the cooperation of positioning blocks and positioning slots and mounting bases and guide slots. It can ensure the accurate relative position of the flushing head and mounting base without complicated calibration operations, thereby improving installation efficiency and reducing labor and time costs. It is highly practical. With the addition of screws, through holes one and two, and nuts, the excavator head body can be quickly fixed. After long-term use, it is easy to inspect or replace it. Through the cooperation of insert blocks and slots and bolts, and threaded holes one and two, the bucket teeth can be quickly fixed. When the bucket teeth are severely worn, it is not necessary to replace the entire excavator head body, only the bucket teeth need to be replaced, which significantly reduces maintenance costs and replacement time.

[0020] 2. This coal mine roadway repair machine with quick-change excavator head significantly improves the wear resistance of the excavator head body through the design of multiple wear-resistant liners, extending the service life of the excavator head body and reducing the replacement frequency due to wear, thereby indirectly improving the efficiency of operation. The design of reinforcing rib one and reinforcing rib two enhances the overall strength of the excavator head body. The "arc" structure design at the bottom of the excavator head body disperses the impact force on the bottom of the excavator head body, avoiding stress concentration cracking at right angles, further improving the structural stability of the excavator head body and extending its service life. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of the excavator body of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the bucket tooth installation structure of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the excavator body of this utility model.

[0026] The components include: 1. Tunnel repair machine body; 2. Mounting base; 3. Excavator head body; 4. Positioning block; 5. Through hole one; 6. Positioning groove; 7. Through hole two; 8. Screw; 9. Nut; 10. Fixing block; 11. Guide groove; 12. Reinforcing rib one; 13. Wear-resistant liner; 14. Reinforcing rib two; 15. Bucket teeth; 16. Insert block; 17. Threaded hole one; 18. Slot; 19. Threaded hole two; 20. Bolt. Detailed Implementation

[0027] 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.

[0028] Example 1:

[0029] like Figure 1-5As shown, this utility model provides a coal mine roadway repair machine with a quick-change excavator head, including a roadway repair machine body 1, a mounting base 2, and an excavator head body 3. A positioning block 4 is fixedly installed on the side of the mounting base 2 near the excavator head body 3. A through hole 5 is opened on the side of the mounting base 2 away from the excavator head body 3. A positioning groove 6 and a through hole 7 are opened on the end of the excavator head body 3 near the mounting base 2. A screw 8 adapted to the through hole 5 and the through hole 7 is inserted and installed on the side of the mounting base 2 away from the excavator head body 3. A nut 9 is threadedly connected to the outer wall of the screw 8. A fixing block 10 is fixedly installed on the end of the excavator head body 3 near the mounting base 2. A guide groove 11 is opened on the outer wall of the fixing block 10. A reinforcing rib 12 and a wear-resistant liner 13 are fixedly installed on the outer wall of the excavator head body 3. A reinforcing rib 2 14 is fixedly installed on the inner wall of the excavator head body 3. A bucket tooth 15 is provided on the end of the excavator head body 3 away from the mounting base 2.

[0030] Specifically, the positioning block 4 and the positioning groove 6 are plug-in installed. The cross-section of the positioning block 4 is T-shaped. The mounting base 2 and the guide groove 11 are also plug-in installed. The advantage is that when the operator inserts the mounting base 2 into the guide groove 11 and the positioning block 4 into the positioning groove 6, the excavator body 3 can be quickly positioned without complicated calibration operations. This ensures the accurate relative position of the flushing head and the mounting base 2, improves installation efficiency, reduces labor and time costs, and has high practicality.

[0031] Specifically, the screw 8 passes through through hole 5 and through hole 7, with the same diameter. The nut 9 abuts against the digging head body 3. The advantage is that after quickly positioning the digging head body 3, the operator can thread the screw 8 through through hole 5 and through hole 7, and then connect the nut 9 to the screw 8, causing the nut 9 to abut against the digging head body 3. This allows for quick fixing of the digging head body 3, facilitating maintenance or replacement after prolonged use.

[0032] Specifically, multiple identical wear-resistant liners 13 are provided, and the multiple wear-resistant liners 13 are distributed at equal intervals. The advantage is that the design of multiple wear-resistant liners 13 significantly improves the wear resistance of the excavator body 3, extends the service life of the excavator body 3, reduces the replacement frequency caused by wear, and indirectly improves the efficiency of operation.

[0033] Example 2:

[0034] like Figure 2-5As shown, as an improvement on the previous embodiment, to further facilitate the installation of the bucket teeth 15, specifically, an insert block 16 is fixedly installed at one end of the bucket teeth 15 near the digging head body 3. A threaded hole 17 is provided at the end of the bucket teeth 15 near the digging head body 3, and a slot 18 and a threaded hole 19 are provided at the end of the digging head body 3 near the bucket teeth 15. A bolt 20, compatible with the threaded hole 17 and the threaded hole 19, is threadedly connected to the end of the bucket teeth 15 near the digging head body 3. The insert block 16 and the slot 18 are plugged into each other, and the cross-section of the insert block 16 has a trapezoidal structure. The advantage is that by inserting the insert block 16 into the slot 18, the bucket teeth 15 can be quickly positioned, reducing the alignment time during installation.

[0035] Specifically, bolt 20 extends through threaded hole 17 to the interior of threaded hole 19, with threaded hole 17 and threaded hole 19 having the same diameter. The advantage is that after quickly positioning the bucket teeth 15, the operator can then quickly fix the bucket teeth 15 by extending bolt 20 through threaded hole 17 to the interior of threaded hole 19. When the bucket teeth 15 are severely worn, it is not necessary to replace the entire excavator body 3; only the bucket teeth 15 need to be replaced, significantly reducing maintenance costs and replacement time.

[0036] Specifically, both reinforcing rib 12 and reinforcing rib 2 have an arc-shaped cross-section, and the bottom of the digger body 3 also has an arc-shaped structure. The advantages are that the design of reinforcing ribs 12 and 2 enhances the overall strength of the digger body 3, and the arc-shaped bottom of the digger body 3 disperses the impact force on the bottom, preventing stress concentration cracking at right angles, further improving the structural stability of the digger body 3 and extending its service life.

[0037] Working principle: During installation, the operator inserts the insert block 16 into the slot 18, which enables quick positioning of the bucket teeth 15, reducing the alignment time during installation. After quickly positioning the bucket teeth 15, the operator inserts the bolt 20 through the threaded hole 17 to the threaded hole 19, which enables quick fixing of the bucket teeth 15. When the bucket teeth 15 are severely worn, it is not necessary to replace the entire excavator head body 3; only the bucket teeth 15 need to be replaced, significantly reducing maintenance costs and replacement time. Subsequently, the operator inserts the mounting base 2 into the guide groove 11 and the positioning block 4 into the positioning groove 6, which enables quick positioning of the excavator head body 3. Without complex calibration operations, the relative position of the flushing head and the mounting base 2 can be ensured to be accurate, improving installation efficiency, reducing labor and time costs, and making it highly practical. After the head body 3 is quickly positioned, the operator inserts the screw 8 through the first through hole 5 and the second through hole 7, and then threads the nut 9 onto the screw 8, so that the nut 9 abuts against the head body 3, which can quickly fix the head body 3. After long-term use, it is easy to inspect or replace it. During use, the design of multiple wear-resistant liners 13 greatly improves the wear resistance of the head body 3, extends the service life of the head body 3, reduces the replacement frequency due to wear, and indirectly improves the efficiency of operation. The design of reinforcing ribs 12 and 24 enhances the overall strength of the head body 3. The "arc" structure design of the bottom end of the head body 3 disperses the impact force on the bottom end of the head body 3, avoids cracking due to stress concentration at right angles, further improves the structural stability of the head body 3, and extends its service life.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine roadway repair machine with a quick-change excavator head, comprising a roadway repair machine body (1), a mounting base (2), and an excavator head body (3), characterized in that: A positioning block (4) is fixedly installed on the side of the mounting base (2) near the digging head body (3). A through hole (5) is provided on the side of the mounting base (2) away from the digging head body (3). A positioning groove (6) and a through hole (7) are provided on the end of the digging head body (3) near the mounting base (2). A screw (8) that matches the through hole (5) and the through hole (7) is inserted into the side of the mounting base (2) away from the digging head body (3). The outer wall of the screw (8) A nut (9) is threaded on the head body (3). A fixing block (10) is fixedly installed on one end of the head body (3) near the mounting base (2). A guide groove (11) is provided on the outer wall of the fixing block (10). A reinforcing rib (12) and a wear-resistant liner (13) are fixedly installed on the outer wall of the head body (3). A reinforcing rib (2) (14) is fixedly installed on the inner wall of the head body (3). A bucket tooth (15) is provided on one end of the head body (3) away from the mounting base (2).

2. A coal mine roadway repair machine with quick-change excavator head as described in claim 1, characterized in that: The positioning block (4) and the positioning groove (6) are plugged in and installed together. The cross section of the positioning block (4) is T-shaped. The mounting base (2) and the guide groove (11) are plugged in and installed together.

3. A coal mine roadway repair machine with quick-change excavator head according to claim 2, characterized in that: The screw (8) passes through through hole one (5) and through hole two (7), the diameters of through hole one (5) and through hole two (7) are the same, and the nut (9) abuts against the head body (3).

4. A coal mine roadway repair machine with quick-change excavator head as described in claim 1, characterized in that: A plug (16) is fixedly installed at one end of the bucket tooth (15) near the digging head body (3). A threaded hole (17) is provided at one end of the bucket tooth (15) near the digging head body (3). A slot (18) and a threaded hole (19) are provided at one end of the digging head body (3). A bolt (20) that matches the threaded hole (17) and the threaded hole (19) is threadedly connected to one end of the bucket tooth (15) near the digging head body (3). The plug (16) and the slot (18) are plugged in. The cross section of the plug (16) is trapezoidal.

5. A coal mine roadway repair machine with quick-change excavator head according to claim 4, characterized in that: The bolt (20) extends through threaded hole one (17) into the interior of threaded hole two (19), the threaded hole one (17) and threaded hole two (19) having the same diameter.

6. A coal mine roadway repair machine with quick-change excavator head according to claim 1, characterized in that: The wear-resistant liner (13) is provided in multiple identical manner, and the multiple wear-resistant liner (13) are distributed at equal intervals.

7. A coal mine roadway repair machine with quick-change excavator head according to claim 1, characterized in that: The cross-sections of the first reinforcing rib (12) and the second reinforcing rib (14) are both arc-shaped, and the bottom end of the excavator body (3) is arc-shaped.

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