Rock core cutting machine suitable for hard rock

Abstract

The utility model relates to the field of geological exploration, and discloses a rock core cutting machine suitable for hard rocks, which comprises a rack; the cutting assembly is arranged on the rack and comprises a cutting saw blade; the splitting branch pipe is used for filling the core of the hard rock, the splitting branch pipe is provided with a saw blade groove which is through up and down in the axis direction of the splitting branch pipe, and the cutting saw blade can penetrate through the saw blade groove to cut the core of the hard rock; the two branch pipe splitting seats are arranged on the rack, are arranged at intervals in the length direction of branch pipes and are located on the two sides of the saw blade groove, each branch pipe splitting seat comprises a mounting plate, positioning rods and a driving device, positioning holes are formed in the mounting plates, the branch pipes penetrate through the positioning holes, and the multiple positioning rods are circumferentially distributed at intervals along the circle centers of the positioning holes; the driving device is used for driving the positioning rod to move towards or away from the circle center of the positioning hole. According to the split tube seat, split tubes of different sizes can be clamped and fixed.

Description

Technical Field

[0001] The utility model relates to the field of geological exploration, in particular to a core cutting machine suitable for hard rocks. Background Art

[0002] Hard rock refers to unweathered rock with a saturated uniaxial ultimate compressive strength greater than 30MPa, mainly including granite, granite porphyry, granite pegmatite, granite gneiss, quartzite, quartz sandstone, diorite, basalt, limestone and silica conglomerate, etc. This type of rock is hard and difficult to cut. With the advancement of mineral exploration, a large number of minerals in hard rocks are being explored, such as lithium ore in granite pegmatite, high-purity quartz in granite pegmatite, quartzite and quartz sandstone, and copper ore in granite and granite porphyry. The exploration of these minerals usually uses mechanical hard rock core drilling, which uses a drill to continuously extract the core of mineral-bearing hard rock deep underground, and then samples it for testing. The specific method is to use a hard rock core cutter to split the hard rock core into two parts, one for retention and one for sending to the laboratory for testing, and finally delineate the scope of the ore body.

[0003] The patent with announcement number CN220548483U discloses a core sawing and cutting device for hard rock, including a frame, a motor, a cutting device, a cutting device and a water supply device; the working table of the frame is provided with a cutting frame and a cutting frame; the motor is arranged at the lower part of the working table, and the driving pulley transmits power through a belt; the cutting device is mounted on the cutting frame, and a driven pulley is arranged at one end of the transmission shaft; a cutting saw blade is arranged at the other end to cut the core of the hard rock, and a protective cover is covered on the outer circumference of the cutting saw blade, and a water supply interface is arranged at the front of the protective cover; the cutting device is mounted on the cutting frame, and the position of the cutting saw blade is just in the vertical plane of the core axis of the hard rock. When the core of the hard rock is moved from top to bottom, the rotating cutting saw blade cuts the core of the hard rock into two halves. In addition, the splitting device in the patent can replace the splitting tube according to the cores of hard rocks with different diameters, and the splitting tube seat is provided with different size specifications. When the saw core cuts the cores of hard rocks with different diameters, the splitting tube seat of the corresponding specification needs to be replaced to perform the saw core splitting operation. That is, when cutting the cores of hard rocks with different diameters, it is necessary to replace the splitting tubes and splitting tube seats of different sizes at the same time. The existing splitting tube seat cannot realize the fixing process of multiple splitting tubes of different sizes at the same time, and has the problems of small application range and cumbersome replacement process.

[0004] In view of this, how to change the current situation that the existing split tube seat cannot be applied to split tubes of various sizes has become a technical problem that technical personnel in this field need to solve urgently. Utility Model Content

[0005] The utility model aims to provide a core cutting machine suitable for hard rock to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A core cutting machine suitable for hard rock, comprising:

[0008] frame;

[0009] A cutting assembly disposed on the frame, the cutting assembly comprising a cutting saw blade;

[0010] A splitting tube for filling a core of a hard rock, wherein the splitting tube is provided with a saw blade groove extending along its axis and penetrating vertically, and the cutting saw blade can pass through the saw blade groove to achieve cutting of the core of the hard rock; and

[0011] Two groups of split tube seats are arranged on the frame, and the two groups of split tube seats are spaced apart along the length direction of the split tube and are located on both sides of the saw blade groove. The split tube seats include a mounting plate, a positioning rod and a driving device. The mounting plate is provided with a positioning hole, and the split tube passes through the positioning hole. A plurality of the positioning rods are distributed in a circular pattern along the center of the positioning hole, and the driving device is used to drive the positioning rod to move toward or away from the center of the positioning hole.

[0012] Furthermore, the driving device comprises:

[0013] A plurality of positioning blocks are fixedly connected to the mounting plate and arranged alternately with the plurality of positioning rods along the circumferential direction of the positioning hole, and the positioning rods are slidably connected with the positioning blocks along the radial direction of the positioning hole.

[0014] Furthermore, a sliding protrusion is arranged on one adjacent side wall of the positioning rod and the positioning block, and a sliding groove is arranged on the other adjacent side wall of the positioning rod and the positioning block, and the sliding protrusion is slidably connected to the sliding groove.

[0015] Furthermore, the driving device further comprises:

[0016] A driving ring rotatably connected to the mounting plate, wherein the inner side wall of the driving ring is slidably connected to the side wall of the positioning block away from the center of the positioning hole, the inner side wall of the driving ring is recessed in a direction away from the positioning hole to form a plurality of driving grooves, the groove walls of the driving grooves are slidably connected to one end of the positioning rod away from the center of the positioning hole, and the positioning rod can be driven to move toward the center of the positioning hole by rotating the driving ring; and

[0017] An elastic component is used to drive the positioning rod to move in a direction away from the center of the positioning hole.

[0018] Furthermore, the elastic component comprises:

[0019] A connecting plate fixedly connected to the positioning block;

[0020] A sliding rod slidingly passing through the connecting plate, wherein the sliding rod is arranged along the radial direction of the positioning hole;

[0021] Two end plates fixedly connected to the side walls of the positioning rod, the two end plates having two ends of the sliding rod fixedly connected thereto respectively; and

[0022] An elastic member used for driving the sliding rod to move toward the center of the positioning hole.

[0023] Furthermore, the two ends of the connecting plate are respectively fixedly connected to the side walls of the two adjacent positioning blocks away from the mounting plate, and the connecting plate is slidably connected to the positioning rod;

[0024] The elastic member is a compression spring sleeved on the peripheral side of the sliding rod, one end of the compression spring is connected to the end plate away from the center direction of the positioning hole, and the other end of the compression spring is connected to the connecting plate.

[0025] Furthermore, the driving device further comprises:

[0026] The outer wall of the driving ring protrudes outward to form a protrusion, and a threaded sleeve is rotatably connected to the protrusion;

[0027] A movable sleeve rotatably connected to the mounting plate; and

[0028] A positioning bolt that slides through the movable sleeve and is threadedly connected to the threaded sleeve can drive the drive ring to rotate along the axial direction of the positioning hole by screwing the positioning bolt.

[0029] Furthermore, a fan-shaped sliding groove is arranged on the end wall of the driving ring, and a limiting protrusion is arranged on the side wall of the mounting plate, and the limiting protrusion is slidably connected to the fan-shaped sliding groove.

[0030] Furthermore, it also includes:

[0031] a collecting box located below the dissecting tube and fixedly connected to the frame, wherein the collecting box is provided with an upward opening; and

[0032] One end of a feeding rod is slidably connected to the split tube, and the outer diameter of the feeding rod is smaller than the inner diameter of the split tube.

[0033] Furthermore, the cutting assembly further comprises:

[0034] a cutting frame rotatably hinged to the frame;

[0035] A driving motor installed on the cutting frame, wherein a driving pulley is installed on the output shaft of the driving motor;

[0036] The cutting saw blade is rotatably connected to the middle part of the cutting frame, and a driven pulley is installed on the transmission shaft of the cutting saw blade; and

[0037] A belt is sleeved on the driving pulley and the driven pulley, and the driving pulley is drivingly connected with the driven pulley through the belt.

[0038] Compared with the prior art, the utility model has at least the following advantages:

[0039] When replacing the splitting tubes of different diameters, the driving device is used to drive the positioning rod to move away from the center of the positioning hole, so that the lock of the splitting tube to be replaced can be released. At this time, the splitting tube to be replaced is taken out of the positioning hole, and the new splitting tube is inserted into the positioning holes of the two groups of splitting tube seats. At this time, the driving device is used to drive the positioning rod to move close to the center of the positioning hole until the end of the positioning rod close to the center of the positioning hole abuts against the outer side of the new splitting tube, and the new splitting tube can be clamped and fixed. By placing the core of the hard rock in the splitting tube, the cutting of the core of the hard rock is achieved by using the cutting saw blade to penetrate the saw blade groove, and by sliding the core of the hard rock along the axis of the splitting tube, the cutting process of the core of the hard rock in different parts is completed. The splitting tube seat of the utility model can achieve the effect of clamping and fixing splitting tubes of various sizes. When the splitting tube is replaced during use, there is no need to replace the splitting tube seat accordingly, which improves the scope of use of the utility model and improves the work efficiency of the hard rock core cutting machine when it is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 This is a schematic diagram of the overall structure of the core cutting machine suitable for hard rocks of the utility model;

[0042] Figure 2 It is a schematic diagram of the assembly of the split tube, split tube seat and feeding rod of the utility model;

[0043] Figure 3 For this utility model Figure 2 A partial enlarged view of area A.

[0044] Attached figures: 1. frame; 2. cutting frame; 3. driving motor; 4. driving pulley; 5. cutting saw blade; 6. driven pulley; 7. belt; 8. splitting tube; 9. saw blade groove; 10. mounting plate; 11. positioning hole; 12. positioning rod; 13. positioning block; 14. sliding protrusion; 15. sliding groove; 16. driving ring; 17. driving groove; 18. connecting plate; 19. sliding rod; 20. end plate; 21. elastic member; 22. threaded sleeve; 23. movable sleeve; 24. positioning bolt; 25. fan-shaped slide groove; 26. limiting protrusion; 27. collecting box; 28. feeding rod. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] Reference Figure 1-3 The utility model provides a core cutting machine suitable for hard rock, which can realize the cutting process of hard rock. The specific structure includes a frame 1, a cutting assembly, a splitting tube 8 and a splitting tube seat. Among them: the cutting assembly is arranged on the frame 1, and the cutting assembly includes a cutting saw blade 5, and the cutting saw blade 5 can realize the cutting of the core of the hard rock; the splitting tube 8 is used to fill the core of the hard rock, and the splitting tube 8 is provided with a saw blade groove 9 along its axial direction and transparent up and down, and the core of the hard rock can slide along the inside of the splitting tube 8, and the cutting saw blade 5 can pass through the saw blade groove 9 to realize the cutting of the core of the hard rock. There are two groups of splitting tube seats, and the two groups of splitting tube seats are arranged on the upper surface of the fixed connection frame 1. The two groups of splitting tube seats are arranged at intervals along the length direction of the splitting tube 8, and are located on both sides of the saw blade groove 9, which are used to clamp the splitting tube 8.

[0048] In addition, the cutting assembly also includes a cutting frame 2, a driving motor 3, a driving pulley 4, a driven pulley 6 and a belt 7. One end of the cutting frame 2 is hinged to the upper surface of the frame 1, the driving motor 3 is fixedly mounted on the cutting frame 2, and the driving motor 3 is located on the side of the cutting frame 2 close to the hinged end, the output shaft of the driving motor 3 is mounted with a driving pulley 4, the cutting saw blade 5 is rotatably connected to the middle of the cutting frame 2, and the driving pulley 6 is mounted on the transmission shaft of the cutting saw blade 5, the belt 7 is sleeved on the driving pulley 4 and the driven pulley 6, and the driving pulley 4 is connected to the driven pulley 6 through the belt 7. After the driving motor 3 is started, it drives the driving pulley 4 to rotate, and further power is transmitted to the driven pulley 6 through the belt 7, thereby realizing the effect of rotating the cutting saw blade 5, thereby realizing the process of core cutting of hard rock.

[0049] The split pipe seat includes a mounting plate 10, a positioning rod 12 and a driving device. The mounting plate 10 is provided with a positioning hole 11. The split pipe 8 passes through the positioning hole 11. The positioning rod 12 is slidably connected to the mounting plate 10. A plurality of positioning rods 12 are distributed in a circular array along the center of the positioning hole 11. Preferably, a plurality of positioning rods 12 are distributed in a circular array along the center of the positioning hole 11. The driving device is used to drive the positioning rod 12 to move toward or away from the center of the positioning hole 11.

[0050] When replacing the splitting tube 8 of different diameters, the positioning rod 12 is driven by the driving device to move away from the center of the positioning hole 11, so as to release the lock of the splitting tube 8 to be replaced. At this time, the splitting tube 8 to be replaced is taken out from the positioning hole 11, and the new splitting tube 8 is inserted into the positioning holes 11 of the two groups of splitting tube seats. At this time, the positioning rod 12 is driven by the driving device to move close to the center of the positioning hole 11 until the end of the positioning rod 12 close to the center of the positioning hole 11 abuts against the outer side of the new splitting tube 8, so as to achieve the effect of clamping and fixing the new splitting tube 8. By placing the core of hard rock in the splitting tube 8, the cutting effect of the core of hard rock is achieved by using the cutting saw blade 5 to penetrate the saw blade groove 9, and by sliding the core of hard rock along the axial direction of the splitting tube 8, the cutting process of the core of hard rock in different parts can be completed. The splitting tube seat of the utility model can achieve the effect of clamping and fixing splitting tubes 8 of various sizes. When the splitting tube 8 is replaced during use, there is no need to replace the splitting tube seat accordingly, which improves the application scope of the utility model and the working efficiency of the core cutting machine for hard rock.

[0051] Preferably, refer to Figure 2-3 The driving device includes a positioning block 13, which is fixedly connected to the side wall of the mounting plate 10, and a plurality of positioning blocks 13 and a plurality of positioning rods 12 are alternately arranged along the circumferential direction of the positioning hole 11, and the positioning rods 12 are slidably connected to the positioning blocks 13 along the radial direction of the positioning hole 11.

[0052] Specifically, a sliding protrusion 14 is disposed on one adjacent side wall of the positioning rod 12 and the positioning block 13 , and a sliding groove 15 is disposed on the other adjacent side wall of the positioning rod 12 and the positioning block 13 . The sliding protrusion 14 is slidably connected to the sliding groove 15 .

[0053] In addition, the driving device also includes a driving ring 16 and an elastic component. The driving ring 16 is sleeved on the circumference of the positioning block 13, and the driving ring 16 is rotatably connected to the mounting plate 10. The inner side wall of the driving ring 16 is slidably connected to the side wall of the positioning block 13 away from the center of the positioning hole 11, thereby achieving the effect of relative rotation of the driving ring 16 around the circumference of the positioning block 13. The inner side wall of the driving ring 16 is recessed in the direction away from the positioning hole 11 to form a plurality of driving grooves 17. The driving grooves 17 are streamlined. The groove wall of the driving groove 17 is slidably connected to one end of the positioning rod 12 away from the center of the positioning hole 11. By rotating the driving ring 16, the positioning rod 12 can be driven to move toward the center of the positioning hole 11; the elastic component is used to drive the positioning rod 12 to move toward the center of the positioning hole 11.

[0054] Rotating the driving ring 16 to make it rotate around the positioning block 13 can drive the positioning rod 12 to overcome the elastic force of the elastic component and move toward the direction close to the center of the positioning hole 11, at this time, the effect of clamping and positioning the split tube 8 can be achieved; rotating the driving ring 16 in the opposite direction, at this time, the driving positioning rod 12 can be moved in the direction away from the center of the positioning hole 11 under the elastic force of the elastic component, at this time, the split tube 8 can be released.

[0055] Optionally, the elastic component includes a connecting plate 18, a sliding rod 19, an elastic member 21 and two end plates 20. Among them: the connecting plate 18 is fixedly connected to the positioning block 13, and the two ends of the connecting plate 18 are respectively fixedly connected to the side walls of the two adjacent positioning blocks 13 away from the mounting plate 10, and the connecting plate 18 is slidably connected to the positioning rod 12; the sliding rod 19 slides through the connecting plate 18, and the sliding rod 19 is arranged along the radial direction of the positioning hole 11; the two end plates 20 are fixedly connected to the side walls of the positioning rod 12, and the two end plates 20 are respectively fixedly connected with the two ends of the sliding rod 19; the elastic member 21 is used to drive the sliding rod 19 to move toward the center of the positioning hole 11, and the elastic member 21 is a compression spring sleeved on the peripheral side of the sliding rod 19, one end of the compression spring is connected to the end plate 20 away from the center of the positioning hole 11, and the other end of the compression spring is connected to the connecting plate 18.

[0056] In addition, in order to achieve the positioning effect of the drive ring 16, the drive device also includes a threaded sleeve 22, a movable sleeve 23 and a positioning bolt 24. Among them: the outer wall of the drive ring 16 protrudes outward to form a protrusion, and the threaded sleeve 22 is rotatably connected to the protrusion; the movable sleeve 23 is rotatably connected to the mounting plate 10, and the movable sleeve 23 is a hollow structure; the positioning bolt 24 slides through the movable sleeve 23 and is threadedly connected to the threaded sleeve 22, and by screwing the positioning bolt 24, the drive ring 16 can be driven to rotate along the axial direction of the positioning hole 11.

[0057] More preferably, a fan-shaped slide groove 25 is arranged on the end wall of the driving ring 16 , and a limiting protrusion 26 is arranged on the side wall of the mounting plate 10 , and the limiting protrusion 26 is slidably connected to the fan-shaped slide groove 25 .

[0058] The core of hard rock will produce a lot of debris during the cutting process, and in order to facilitate the collection process of the cut core, the utility model is also provided with a collection box 27, which is provided with an upward opening, is located below the dissecting tube 8, and is fixedly connected to the frame 1, and the cut core and debris will fall into the collection box 27.

[0059] In order to facilitate the sliding effect along the axial direction of the core cutting tube during the core cutting process of hard rock, the utility model is also provided with a feeding rod 28. The outer diameter of the feeding rod 28 is smaller than the inner diameter of the cutting tube 8. By sliding one end of the feeding rod 28 in the cutting tube 8, the core of the hard rock can be pushed.

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A core cutting machine suitable for hard rock, characterized in that: include: Rack (1); A cutting assembly arranged on the frame (1), the cutting assembly comprising a cutting saw blade (5); A splitting tube (8) for filling a core of a hard rock, the splitting tube (8) being provided with a saw blade groove (9) extending along its axial direction and penetrating vertically, and the cutting saw blade (5) can pass through the saw blade groove (9) to achieve cutting of the core of the hard rock; and Two groups of split tube seats are arranged on the frame (1), and the two groups of split tube seats are arranged at intervals along the length direction of the split tube (8) and are located on both sides of the saw blade groove (9). The split tube seats include a mounting plate (10), a positioning rod (12) and a driving device. A positioning hole (11) is arranged on the mounting plate (10), and the split tube (8) passes through the positioning hole (11). A plurality of positioning rods (12) are distributed at intervals along the circumference of the center of the positioning hole (11). The driving device is used to drive the positioning rod (12) to move toward or away from the center of the positioning hole (11).

2. The core cutting machine suitable for hard rock according to claim 1, characterized in that: The driving device comprises: A plurality of positioning blocks (13) are fixedly connected to the mounting plate (10) and arranged alternately with the plurality of positioning rods (12) along the circumferential direction of the positioning hole (11); the positioning rods (12) are slidably connected to the positioning blocks (13) along the radial direction of the positioning hole (11).

3. The core cutting machine suitable for hard rock according to claim 2, characterized in that: A sliding protrusion (14) is arranged on one adjacent side wall of the positioning rod (12) and the positioning block (13), and a sliding groove (15) is arranged on the other adjacent side wall of the positioning rod (12) and the positioning block (13), and the sliding protrusion (14) is slidably connected to the sliding groove (15).

4. The core cutting machine suitable for hard rock according to claim 2, characterized in that: The driving device further comprises: A driving ring (16) rotatably connected to the mounting plate (10), the inner side wall of the driving ring (16) being slidably connected to the side wall of the positioning block (13) away from the center of the positioning hole (11), the inner side wall of the driving ring (16) being recessed in a direction away from the positioning hole (11) to form a plurality of driving grooves (17), the groove walls of the driving grooves (17) being slidably connected to one end of the positioning rod (12) away from the center of the positioning hole (11), and the positioning rod (12) being driven to move toward the center of the positioning hole (11) by rotating the driving ring (16); and An elastic component is used to drive the positioning rod (12) to move in a direction away from the center of the positioning hole (11).

5. The core cutting machine suitable for hard rock according to claim 4, characterized in that: The elastic component comprises: A connecting plate (18) fixedly connected to the positioning block (13); a sliding rod (19) slidingly penetrating the connecting plate (18), wherein the sliding rod (19) is arranged along the radial direction of the positioning hole (11); Two end plates (20) fixedly connected to the side walls of the positioning rod (12), the two end plates (20) respectively having two ends of the sliding rod (19) fixedly connected thereto; and An elastic member (21) is used for driving the sliding rod (19) to move toward the center of the positioning hole (11).

6. The core cutting machine suitable for hard rock according to claim 5, characterized in that: The two ends of the connecting plate (18) are respectively fixedly connected to the side walls of two adjacent positioning blocks (13) away from the mounting plate (10), and the connecting plate (18) is slidably connected to the positioning rod (12); The elastic member (21) is a compression spring sleeved on the circumference of the sliding rod (19), one end of the compression spring is connected to the end plate (20) away from the center of the positioning hole (11), and the other end of the compression spring is connected to the connecting plate (18).

7. The core cutting machine suitable for hard rock according to claim 5, characterized in that: The driving device further comprises: The outer wall of the driving ring (16) protrudes outward to form a protrusion, and a threaded sleeve (22) is rotatably connected to the protrusion; Rotating a movable sleeve (23) connected to the mounting plate (10); and A positioning bolt (24) that slides through the movable sleeve (23) and is threadedly connected to the threaded sleeve (22) can drive the drive ring (16) to rotate along the axial direction of the positioning hole (11) by screwing the positioning bolt (24).

8. The core cutting machine suitable for hard rock according to claim 7, characterized in that: A fan-shaped sliding groove (25) is arranged on the end wall of the driving ring (16), and a limiting protrusion (26) is arranged on the side wall of the mounting plate (10), and the limiting protrusion (26) is slidably connected to the fan-shaped sliding groove (25).

9. The core cutting machine suitable for hard rock according to any one of claims 1 to 8, characterized in that: Also includes: A collecting box (27) located below the dissecting tube (8) and fixedly connected to the frame (1), wherein the collecting box (27) is provided with an upward opening; as well as One end of a feeding rod (28) is slidably connected to the split tube (8), and the outer diameter of the feeding rod (28) is smaller than the inner diameter of the split tube (8).

10. The core cutting machine suitable for hard rock according to claim 9, characterized in that: The cutting assembly also includes: A cutting frame (2) rotatably hinged to the frame (1); A driving motor (3) mounted on the cutting frame (2), wherein a driving pulley (4) is mounted on the output shaft of the driving motor (3); The cutting saw blade (5) is rotatably connected to the middle part of the cutting frame (2), and a driven pulley (6) is installed on the transmission shaft of the cutting saw blade (5); and A belt (7) is sleeved on the driving pulley (4) and the driven pulley (6); the driving pulley (4) is transmission-connected to the driven pulley (6) via the belt (7).

Images