A chain sawing mechanism with adjustable length

Abstract

The application discloses a length-adjustable chain sawing mechanism and relates to the field of mine exploitation equipment.The length-adjustable chain sawing mechanism comprises a driving frame, a connecting frame, a driving motor, a driving wheel, a tensioning device, a water spraying frame, a rear frame, an intermediate frame, a guide wheel frame, a guide wheel assembly and a cutting chain assembly.The rear side of the driving frame is connected with a main machine and a lifting oil cylinder, and driving motors are installed on the left and right sides of the driving frame.Through the length-adjustable chain sawing mechanism, the length of the chain sawing mechanism can be flexibly adjusted according to the actual requirements of a coal mine exploitation site by adjusting the intermediate frame and the cutting chain assembly, so that the chain sawing mechanism can better adapt to the floor slotting and pressure releasing operation of coal seams with different thicknesses, and the universality and application range of the equipment are improved.Meanwhile, the cooperation of the rear frame and the tensioning device can conveniently adjust the tightness of the cutting chain assembly, ensures the stable operation of the cutting chain assembly in the cutting process, and improves the cutting quality and efficiency.

Description

Technical Field

[0001] This application relates to the field of mining equipment, and in particular to a chain sawing mechanism with adjustable length. Background Technology

[0002] Currently, in coal mining, especially in mines prone to rock bursts, decompression work is particularly important, especially the decompression of the floor. The main methods used are drilling decompression, blasting decompression, and trenching decompression. These methods are time-consuming, labor-intensive, and involve harsh working environments, which affects mining efficiency. Furthermore, the existing problem of floor bulging requires the use of roadway repair machines to repair the roadway at irregular intervals, which affects the normal production of coal mines. However, the current method of excavating roadway water channels generally uses rock drills or manual excavation, which is inefficient and produces poor results. Utility Model Content

[0003] To address the problem that existing chain sawing mechanisms have fixed lengths and are difficult to adapt to different cutting needs, and to improve the versatility and practicality of chain sawing mechanisms in coal mine floor grooving and pressure relief operations, this application provides a chain sawing mechanism with adjustable length.

[0004] The present application provides a chain sawing mechanism with adjustable length, which adopts the following technical solution: A chain sawing mechanism with adjustable length includes a drive frame, a connecting frame, a drive motor, a drive wheel, a tensioning device, a water spray frame, a rear frame, an intermediate frame, a guide wheel frame, a guide wheel assembly, and a cutting chain assembly. The drive frame is connected to the main unit and the lifting cylinder at its rear side, and drive motors are installed on the left and right sides. A drive wheel is installed in the middle of the drive motor, and a connecting frame is installed on the inner front side. The rear frame and the tensioning device are fixed on the inner side of the connecting frame, and a water spray frame is installed on top.

[0005] By adopting the above technical solution, the installation is completed by installing a drive motor on one side of the drive frame, installing the drive wheel on the output shaft of the drive motor, installing the drive motor on the other side, installing the connecting frame inside the drive frame, installing the rear frame in the middle of the connecting frame, connecting and installing the intermediate frame and the guide wheel frame in sequence, fixing the guide wheel assembly on the guide wheel frame, and finally winding the cutting chain assembly between the drive wheel and the guide wheel assembly and connecting the ends. The tension of the cutting chain assembly is adjusted by the tensioning device, and finally the bolts between the connecting frame and the rear frame are tightened and the locking pin is inserted.

[0006] Preferably, the drive wheel drives the chain to rotate, and includes drive wheel teeth, a side positioning surface, and a second polygonal transmission key.

[0007] By adopting the above technical solution, the drive wheel teeth are used to drive the chain movement, the side positioning surface is used to position the drive wheel to ensure that the drive wheel does not move left or right, and the second polygonal transmission key is used to transmit torque. The processing and installation are simple and convenient, and the cost is low.

[0008] Preferably, the drive motor comprises a first polygonal transmission key, a positioning stop, and a motor assembly.

[0009] By adopting the above technical solution, the drive motor inputs hydraulic oil, which drives the first polygonal transmission key to rotate, thereby driving the drive wheel to rotate. The positioning flange and the side positioning surface of the drive wheel are in contact to prevent the drive wheel from moving left and right.

[0010] Preferably, the connecting frame includes a locking pin hole, a rear frame fixing bolt hole, and a connecting frame fixing bolt hole.

[0011] By adopting the above technical solution, bolts are inserted into the fixing bolt holes of the connecting frame and fixed to the drive frame. After the chain tension is adjusted to a suitable level by the tensioning device, the positioning pin is inserted into the positioning pin hole to lock the positioning pin hole of the rear frame and the connecting frame. Then, bolts are inserted between the fixing bolt holes of the rear frame and the bolt holes, and torque is applied to tighten them, which plays a double insurance role.

[0012] Preferably, the tensioning device is a lead screw or a hydraulic cylinder, more preferably a hydraulic cylinder, which includes a cylinder rod and a cylinder barrel; the water spray frame includes a water spray frame body, a nozzle, and a protective cover.

[0013] By adopting the above technical solution, after loosening the fixing bolts, the lever is pushed out by hydraulic oil, the rear frame is pushed out, and the cutting chain is tensioned; the nozzle is used to atomize high-pressure water to extinguish dust and cool the cutting chain; the protective cover is used to protect the material brought up from the bottom of the cutting chain and prevent injury.

[0014] Preferably, the rear frame includes a third connecting bolt hole, a third connecting positioning key, a rear frame body, a tensioning device seat, bolt holes, and positioning pin holes.

[0015] By adopting the above technical solution, the third connecting bolt holes are connected together with bolts. The tensioning device seat is used to block the tensioning device, pushing the rear frame out from between the two connecting frames to achieve tensioning of the cutting chain.

[0016] Preferably, the intermediate frame includes a second connecting bolt hole, a second connecting positioning key, and an intermediate frame body.

[0017] By adopting the above technical solution, the front and rear ends of the intermediate frame have the same connecting surfaces and connecting keys. By increasing or decreasing the number of intermediate frames, the overall length can be adjusted to adapt to the cutting of grooves of different depths.

[0018] Preferably, the guide wheel frame includes a guide wheel assembly mounting base, a guide wheel frame body, a first connecting bolt hole between the guide wheel frame and the intermediate frame, and a first connecting positioning key between the guide wheel frame and the intermediate frame.

[0019] By adopting the above technical solution, the guide wheel assembly mounting base is used to install the guide wheel assembly. The first connecting bolt hole between the guide wheel frame and the intermediate frame and the first connecting positioning key between the guide wheel frame and the intermediate frame are connected to the intermediate frame as a whole by bolts and keys.

[0020] Preferably, the guide wheel assembly includes a guide wheel, a guide wheel shaft, and a guide wheel connecting frame.

[0021] By adopting the above technical solution, the guide wheel is installed on the guide wheel shaft and rotates around it, and the guide wheel connecting frame is fixed to the guide wheel frame by bolts.

[0022] Preferably, the cutting chain assembly includes a transmission chain, a tooth base, a cutting tooth, a tooth base, a cutting tooth fixing spring, and a pin; the drive frame includes a connecting frame thread, a drive motor stop, a main unit connecting pin hole, and a lifting cylinder pin hole.

[0023] By adopting the above technical solution, the transmission chain is mainly used to transmit power. The tooth seat is welded to the tooth seat base, the cutting tooth is installed in the cutting tooth base, and the cutting tooth is fixed with the cutting tooth fixing spring to prevent it from falling off. The pins are used to connect each link of the transmission chain, linking them into a whole, which is then cut cyclically under the drive of the drive wheel.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. This application employs a chain sawing mechanism with adjustable length, utilizing a cutting chain assembly and an adjustable intermediate frame. This allows for flexible adjustment of the chain sawing mechanism's length according to the actual needs of the coal mine, better adapting it to bottom grooving and pressure relief operations in coal seams of varying thicknesses, thus improving the equipment's versatility and applicability. Simultaneously, the coordination between the rear frame and the tensioning device facilitates easy adjustment of the cutting chain assembly's tension, ensuring stable operation during the cutting process and improving cutting quality and efficiency.

[0025] 2. This application utilizes a water spray system, which effectively solves the problems of cooling and dust suppression during the cutting process, improves the working environment, and helps protect the health of operators and ensure the normal operation of equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a chain sawing mechanism with adjustable length according to an embodiment of this application; Figure 2This is a schematic diagram illustrating the drive frame structure, which is the main feature of this application embodiment. Figure 3 This is a schematic diagram illustrating the main connecting frame structure in the embodiments of this application; Figure 4 This is a schematic diagram illustrating the rear frame structure, which is the main feature of this application embodiment. Figure 5 This is a schematic diagram illustrating the intermediate frame structure, which is the main feature of this application embodiment. Figure 6 This is a schematic diagram illustrating the guide wheel frame structure, which is a key feature of this application. Figure 7 This is a schematic diagram illustrating the structure of the guide wheel assembly, which is a key feature of this application. Figure 8 This is a schematic diagram illustrating the main structure of the drive motor in the embodiments of this application; Figure 9 This is a schematic diagram illustrating the main structure of the cutting chain assembly in the embodiments of this application; Figure 10 This is a schematic diagram illustrating the drive wheel structure, representing an embodiment of this application. Figure 11 This is a schematic diagram illustrating the main structure of the water spray frame in the embodiments of this application; Figure 12 This is a schematic diagram illustrating the structure of the tensioning device, as shown in the embodiments of this application. Reference numerals: 1. Cutting chain assembly; 101. Drive chain; 102. Gear seat base; 103. Cutting gear; 104. Gear seat; 105. Cutting gear retaining circlip; 106. Pin; 2. Guide wheel assembly; 201. Guide wheel; 202. Guide wheel shaft; 203. Guide wheel connecting frame; 3. Guide wheel frame; 301. Guide wheel assembly mounting base; 302. Guide wheel frame; 303. First connecting bolt hole; 304. First connecting positioning key; 4. Intermediate frame; 401. Second connecting bolt hole; 402. Second connecting positioning key; 403. Intermediate frame body; 5. Rear frame; 501. Third connecting bolt hole; 502. Third connecting positioning key; 503. Rear frame; 504. Tensioning device seat; 505. Bolt hole; 506. Positioning pin hole; 6. Sprinkler frame; 601. Sprayer frame; 602. Nozzle; 603. Protective cover; 7. Tensioning device; 701. Cylinder rod; 702. Cylinder barrel; 8. Connecting frame; 801. Locking pin hole; 802. Rear frame fixing bolt hole; 803. Connecting frame fixing bolt hole; 9. Drive motor; 901. First polygonal transmission key; 902. Positioning stop; 903. Motor; 10. Drive wheels; 1001. Drive gear teeth; 1002. Side positioning surface; 1003. Second polygonal transmission key; 11. Drive frame; 1101. Threaded connecting bracket; 1102. Stop of drive motor; 1103. Connecting pin hole of main unit; 1104. Pin hole of lifting cylinder. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-12 This application will be described in further detail.

[0028] This application discloses a chain sawing mechanism with adjustable length.

[0029] Reference Figure 1-3 An adjustable-length chain sawing mechanism includes a chain sawing mechanism consisting of a drive frame 11, a connecting frame 8, a drive motor 9, a drive wheel 10, a tensioning device 7, a water spray frame 6, a rear frame 5, an intermediate frame 4, a guide wheel frame 3, a guide wheel assembly 2, and a cutting chain assembly 1. The drive frame 11 is connected to the main unit and the lifting cylinder at its rear side, and the drive motor 9 is installed on the left and right sides. The drive wheel 10 is installed in the middle of the drive motor 9, and the connecting frame 8 is installed on the inner front side. The rear frame 5 and the tensioning device 7 are fixed on the inner side of the connecting frame 8, and the water spray frame 6 is installed on the top.

[0030] In use, the installation process involves mounting one drive motor 9 on the drive frame 11, then mounting the drive wheel 10 on the output shaft of the drive motor 9, then mounting the other drive motor 9, then mounting the connecting frame 8 on the inside of the drive frame 11, mounting the rear frame 5 in the middle of the connecting frame 8, then connecting and installing the intermediate frame 4 and the guide wheel frame 3 in sequence, then fixing the guide wheel assembly 2 on the guide wheel frame 3, finally winding the cutting chain assembly 1 between the drive wheel 10 and the guide wheel assembly 2, and connecting the ends. The tension of the cutting chain assembly 1 is adjusted by the tensioning device 7. Finally, the bolts between the connecting frame 8 and the rear frame 5 are tightened, and the locking pin is inserted to complete the installation.

[0031] Reference Figure 10 The drive wheel 10 drives the chain to rotate, and includes a drive wheel tooth 1001, a side positioning surface 1002, and a second polygonal transmission key 1003.

[0032] In use, the drive wheel teeth 1001 are used to drive the chain to move, the side positioning surface 1002 is used to position the drive wheel 10 to ensure that the drive wheel 10 does not move left or right, and the second polygonal transmission key 1003 is used to transmit torque. It is simple and convenient to process and install, and has low cost.

[0033] Reference Figure 8 The drive motor 9 comprises a first polygonal transmission key 901, a positioning stop 902, and a motor 903.

[0034] In use, the drive motor 9 inputs hydraulic oil, which drives the first polygonal transmission key 901 to rotate, thereby driving the drive wheel 10 to rotate. The positioning stop 902 and the side positioning surface 1002 of the drive wheel 10 are in contact to prevent the drive wheel 10 from moving left and right.

[0035] Reference Figure 3 The connecting frame 8 includes a locking pin hole 801, a rear frame fixing bolt hole 802, and a connecting frame fixing bolt hole 803.

[0036] In use, bolts are inserted into the connecting frame fixing bolt holes 803 to fix it to the drive frame. After adjusting the chain tension appropriately using the tensioning device, the positioning pin is inserted into the positioning pin hole to lock the rear frame positioning pin hole 506 and the connecting frame 8. Then, bolts are inserted between the rear frame fixing bolt hole and bolt hole 505 and tightened with torque, providing a double safety function.

[0037] Reference Figure 12 The tensioning device 7 is a lead screw or a hydraulic cylinder, and more specifically a hydraulic cylinder, which includes a cylinder rod 701 and a cylinder barrel 702; the water spray frame 6 includes a water spray frame body 601, a nozzle 602, and a protective cover 603.

[0038] In use, by loosening the fixing bolts, the lever is pushed out using hydraulic oil, which pushes out the rear frame and tensions the cutting chain; the function of nozzle 602 is to atomize high-pressure water to extinguish dust and cool the cutting chain; the protective cover is used to protect against materials brought up from the bottom of the cutting chain and prevent injury.

[0039] Reference Figure 4 The rear frame 5 includes a third connecting bolt hole 501, a third connecting positioning key 502, a rear frame body 503, a tensioning device seat 504, a bolt hole 505, and a positioning pin hole 506.

[0040] In use, the third connecting bolt holes 501 are connected together by bolts. The tensioning device seat 504 is used to block the tensioning device 7 and push the rear frame 5 out between the two connecting frames 8 to achieve tensioning of the cutting chain.

[0041] Reference Figure 5 The intermediate frame 4 includes a second connecting bolt hole 401, a second connecting positioning key 402, and an intermediate frame body 403.

[0042] When in use, the front and rear ends of the intermediate frame 4 have the same connecting surfaces and connecting keys. The overall length can be adjusted by increasing or decreasing the number of intermediate frames to accommodate the cutting of grooves of different depths.

[0043] Reference Figure 6 The guide wheel frame 3 includes a guide wheel assembly mounting base 301, a guide wheel frame body 302, a first connecting bolt hole 303 between the guide wheel frame 3 and the intermediate frame 4, and a first connecting positioning key 304 between the guide wheel frame 3 and the intermediate frame 4.

[0044] In use, the guide wheel assembly mounting base 301 is used to install the guide wheel assembly 2. The guide wheel frame 3 and the intermediate frame 4 first connecting bolt hole 303 and the guide wheel frame 3 and the intermediate frame 4 first connecting positioning key 304 are connected to the intermediate frame 4 as a whole through bolts and keys.

[0045] Reference Figure 7 The guide wheel assembly 2 includes a guide wheel 201, a guide wheel shaft 202, and a guide wheel connecting frame 203.

[0046] In use, the guide wheel 201 is mounted on the guide wheel shaft 202 and rotates around it, and the guide wheel connecting bracket 203 is fixed to the guide wheel frame 3 by bolts.

[0047] Reference Figure 1 , Figure 2 and Figure 9 The cutting chain assembly 1 includes a transmission chain 101, a tooth base 102, a cutting tooth 103, a tooth base 104, a cutting tooth fixing circlip 105, and a pin 106; the drive frame 11 includes a connecting frame thread 1101, a drive motor stop 1102, a main unit connecting pin hole 1103, and a lifting cylinder pin hole 1104.

[0048] In use, the transmission chain 101 is mainly used to transmit power. The tooth seat 104 is welded to the tooth seat base 102. The cutting tooth 103 is installed in the cutting tooth base and fixed with the cutting tooth fixing spring 105 to prevent it from falling off. Pin 106 is used to connect each section of the transmission chain, linking them into a whole, and then cutting cyclically under the drive of the drive wheel.

[0049] The implementation principle of an adjustable chain sawing mechanism according to an embodiment of this application is as follows: In use, a drive motor 9 on one side is installed on a drive frame 11, and a drive wheel 10 is installed on the output shaft of the drive motor 9. Then, a drive motor 9 on the other side is installed. A connecting frame 8 is installed inside the drive frame 11, and a rear frame 5 is installed in the middle of the connecting frame 8. The intermediate frame 4 and the guide wheel frame 3 are then connected and installed in sequence. The guide wheel assembly 2 is then fixed on the guide wheel frame 3. Finally, the cutting chain assembly 1 is wound between the drive wheel 10 and the guide wheel assembly 2 and connected at the end. The tension of the cutting chain assembly 1 is adjusted by the tensioning device 7. Finally, the bolts between the connecting frame 8 and the rear frame 5 are tightened, and the locking pin is inserted to complete the installation.

Claims

1. A chain sawing mechanism with adjustable length, comprising a drive frame (11), a connecting frame (8), a drive motor (9), a drive wheel (10), a tensioning device (7), a water spray frame (6), a rear frame (5), an intermediate frame (4), a guide wheel frame (3), a guide wheel assembly (2), and a cutting chain assembly (1), characterized in that: The drive frame (11) is connected to the host and the lifting cylinder at its rear, and drive motors (9) are installed on the left and right sides. The drive wheel (10) is installed in the middle of the drive motor (9), and a connecting frame (8) is installed on the inner front side. The rear frame (5) and the tensioning device (7) are fixed on the inner side of the connecting frame (8), and a water spray frame (6) is installed on the top.

2. The adjustable-length chain sawing mechanism according to claim 1, characterized in that: The drive wheel (10) drives the chain to rotate, and includes a drive wheel tooth (1001), a side positioning surface (1002), and a second polygonal transmission key (1003).

3. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The drive motor (9) comprises a first polygonal transmission key (901), a positioning stop (902), and a motor (903).

4. The adjustable-length chain sawing mechanism according to claim 1, characterized in that: The connecting frame (8) includes a locking pin hole (801), a rear frame fixing bolt hole (802), and a connecting frame fixing bolt hole (803).

5. The adjustable-length chain sawing mechanism according to claim 1, characterized in that: The tensioning device (7) is a lead screw or a hydraulic cylinder, and more specifically a hydraulic cylinder, which includes a cylinder rod (701) and a cylinder barrel (702); the water spray frame (6) includes three parts: a water spray frame body (601), a nozzle (602), and a protective cover (603).

6. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The rear frame (5) includes a third connecting bolt hole (501), a third connecting positioning key (502), a rear frame body (503), a tensioning device seat (504), a bolt hole (505), and a positioning pin hole (506).

7. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The intermediate frame (4) includes a second connecting bolt hole (401), a second connecting positioning key (402), and an intermediate frame body (403).

8. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The guide wheel frame (3) includes a guide wheel assembly mounting base (301), a guide wheel frame body (302), a first connecting bolt hole (303) between the guide wheel frame (3) and the intermediate frame (4), and a first connecting positioning key (304) between the guide wheel frame (3) and the intermediate frame (4).

9. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The guide wheel assembly (2) includes a guide wheel (201), a guide wheel shaft (202), and a guide wheel connecting frame (203).

10. The chain sawing mechanism with adjustable length according to claim 1, characterized in that: The cutting chain assembly (1) includes a transmission chain (101), a tooth base (102), a cutting tooth (103), a tooth base (104), a cutting tooth fixing circlip (105), and a pin (106); the drive frame (11) includes a connecting frame thread (1101), a drive motor stop (1102), a main unit connecting pin hole (1103), and a lifting cylinder pin hole (1104).

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