CN210758207U

CN210758207U - Multifunctional long arm saw

Info

Publication number: CN210758207U
Application number: CN201921144720.XU
Authority: CN
Inventors: 王晓军
Original assignee: Xinle Xiangrui Mechanical Equipment Co ltd
Current assignee: Xinle Xiangrui Mechanical Equipment Co ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-06-16
Anticipated expiration: 2029-07-19

Abstract

The utility model relates to a multi-functional long arm saw, include: the rack comprises an upper transverse frame, a middle transverse frame, a lower transverse frame and a left bracket; the adjusting device comprises a driving wheel, a driven wheel and adjusting wheels, wherein the driving wheel is arranged on a middle cross frame, the driven wheel is arranged on an upper cross frame, the adjusting wheels are all arranged on a left bracket, and the center positions of the driving wheel, the driven wheel and the adjusting wheels are arranged in a triangle; the motor is connected with the driving wheel, is arranged on the lower cross frame and is used for driving the driving wheel to rotate; the workbench is erected on the middle cross frame.

Description

Multifunctional long arm saw

Technical Field

The utility model relates to a wood working field, concretely relates to wood working machinery.

Background

The band saw machine is a sawing machine which takes a ring-shaped endless band saw blade as a sawing tool and winds on two saw wheels to do unidirectional continuous linear motion to saw and cut wood. The saw blade tensioning device mainly comprises a lathe bed, a saw wheel, an upper saw wheel lifting and pitching device, a band saw blade tensioning device, a saw blade guide device, a workbench, a guide plate and the like. As shown in fig. 18, the conventional band saw machine is provided with two saw wheels, which causes a working area a to be determined by the diameters of the saw wheels, and when it is necessary to increase or decrease the working area, the working area can be changed only by changing the sizes of the saw wheels, so that a plurality of saw wheels having different diameters need to be prepared for replacement, and in the process of replacing the saw wheels, a plurality of persons need to cooperate to replace the saw wheels.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multi-functional long arm saw, its saw blade is around taking turns at three fixed diameter's saw, can be according to customer's demand, need not change the increase that the saw wheel can realize work area or reduce.

In order to accomplish the above object, the utility model provides a multi-functional long arm saw, include: the rack comprises an upper transverse frame, a middle transverse frame, a lower transverse frame and a left bracket; the adjusting device comprises a driving wheel, a driven wheel and adjusting wheels, wherein the driving wheel is arranged on a middle cross frame, the driven wheel is arranged on an upper cross frame, the adjusting wheels are all arranged on a left bracket, and the center positions of the driving wheel, the driven wheel and the adjusting wheels are arranged in a triangle; the motor is connected with the driving wheel, is arranged on the lower cross frame and is used for driving the driving wheel to rotate; the workbench is erected on the middle cross frame.

Preferably, the driving wheel is arranged on the middle cross frame through the first base, the first base is located below the middle cross frame, the first base comprises two first side plates, two first bearing seats, two first bearings and a first rotating shaft, the two first side plates are welded to two sides of the middle cross frame respectively, the first bearing seats are arranged on the first side plates respectively, the first bearings are arranged on the first bearing seats, the first side plates are used for supporting the first rotating shaft, and the driving wheel is arranged on the first rotating shaft.

Preferably, the driven wheel is arranged on the upper cross frame through a second base, the second base is located above the upper cross frame and comprises two second side plates, two second bearing seats, two second bearings and a second rotating shaft, the two second side plates are welded to two sides of the upper cross frame respectively, the second bearing seats are arranged on the second side plates respectively, the second bearings are arranged on the second bearing seats, the second side plates are used for supporting the second rotating shaft, and the driven wheel is arranged on the second rotating shaft.

Preferably, the left support is welded with two connecting rods, one end of each connecting rod is welded with the left support, the other end of each connecting rod is provided with a partition plate, each partition plate is connected with the corresponding connecting rod through a bolt, the adjusting wheel is arranged on the corresponding connecting rod through an adjusting base, each adjusting base comprises a square frame, an adjusting screw rod and a high-strength spring, the square frames can slide on the connecting rods, and one end of each adjusting screw rod sequentially penetrates through the corresponding partition plate, one side of each square frame and the corresponding high-strength spring and then is welded with the corresponding stop plate; the square frame is also provided with a third bearing seat and a third bearing, the third bearing is arranged on the third bearing seat, a third rotating shaft penetrates through the third bearing to be connected with the regulating wheel, and the third rotating shaft is tightly connected with the high-strength spring.

Preferably, the middle cross frame is provided with a blocking device, the blocking device is used for correcting saw blades and comprises right-angle plates, the right-angle plates comprise a first right-angle plate and a second right-angle plate, the first right-angle plate and the second right-angle plate are vertically arranged, one part of the first right-angle plate is welded with the middle cross frame, the second right-angle plate is provided with a roller screw rod, one end of the roller screw rod is connected with the second right-angle plate through a nut, the other end of the roller screw rod is provided with a roller, and the roller is provided with an annular groove;

the second right-angle plate is also provided with a baffle plate for preventing the saw blade from derailing;

the first straight angle plate is provided with two pulley screws, one end of each pulley screw is connected with the first straight angle plate through a nut, the other end of each pulley screw is provided with a pulley, the saw blade penetrates between the two pulleys, and one part of the saw blade is located in the annular groove.

Further preferably, go up also to be equipped with blocking device on the crossbearer, be equipped with the blocking device base on the crossbearer, the base passes through the screw rod and is connected with last crossbearer, it is equipped with montant and first locking device to insert on the blocking device base, in the blocking device base was inserted to the one end of montant, the other end of montant inserted in the spliced pole, be equipped with horizontal pole and second locking device on the spliced pole, the spliced pole is worn out to the one end of horizontal pole, the other end of horizontal pole and the first straight-angle board welding of blocking.

Still further preferably, the first locking device comprises a first screw bolt, and the first screw bolt is in threaded connection with the blocking device base; the second locking device comprises a second screw rod, and the second screw rod is in threaded connection with the connecting column.

Preferably, still be equipped with the shell in the frame, the shell includes backplate and apron, and the backplate passes through the buckle with the apron to be connected, and the shell can be with following driving wheel and regulating wheel cladding.

Preferably, be equipped with bar hole and round hole on the workstation, the round hole sets up the one end in the bar hole, is equipped with the bar shaped plate on the bar hole, and the one end of bar shaped plate is equipped with first bar groove, is equipped with the plectane on the round hole, is equipped with second bar groove on the plectane, and first bar groove forms the bar groove with second bar groove after the intercombination, and the bar groove is used for the saw blade to pass.

The utility model has the advantages that: the utility model discloses a set up three saw wheel in the frame, be the action wheel respectively, from driving wheel and regulating wheel, compare current band saw machine and increased a regulating wheel, with the band saw blade around on the regulating wheel to through adjusting to the action wheel and from the change (increase or reduce) that the horizontal distance of driving wheel and regulating wheel realized work area, then realize the elasticity of band saw blade through the regulating wheel, make the utility model discloses need not to change the change that work area can be realized to the saw wheel.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of the overall three-dimensional structure of the multifunctional long arm saw of the present invention.

Fig. 2 is a schematic perspective view of the multifunctional long arm saw of the present invention with the outer case removed.

Fig. 3 is a schematic perspective view of the multifunctional long arm saw of the present invention with the work table removed.

Fig. 4 is a left side view of the second base of the multifunctional long arm saw of the present invention.

Fig. 5 is a rear view of the second base of the multi-function long arm saw of the present invention.

Fig. 6 is a left side view of the first base of the multifunctional long arm saw of the present invention.

Fig. 7 is a rear view of the first base of the multi-function long arm saw of the present invention.

Fig. 8 is a schematic view of the three-dimensional structure of the adjusting base and the frame of the multifunctional long arm saw of the present invention.

Fig. 9 is a schematic view of the overall three-dimensional structure of the adjusting base of the multifunctional long arm saw of the present invention.

Fig. 10 is a schematic view of the combination of the third rotating shaft and the high-strength spring of the multifunctional long arm saw of the present invention.

Fig. 11 is a sectional view of the adjusting base of the multifunctional long arm saw of the present invention connected to the frame.

Fig. 12 is a schematic structural view of a housing of the multifunctional long arm saw of the present invention.

Fig. 13 is a schematic view of a connection structure between the blocking device and the upper cross frame of the multifunctional long arm saw of the present invention.

Fig. 14 is a top view of the connecting post of the multi-function long arm saw of the present invention.

Fig. 15 is a left side view of the connecting post of the multi-function long arm saw of the present invention.

Fig. 16 is a top view of the blocking device of the multifunctional long arm saw of the present invention.

Fig. 17 is a schematic structural view of a table of the multifunctional long arm saw of the present invention.

FIG. 18 is a saw wheel schematic of a prior art band saw machine.

Fig. 19 is a schematic structural view of a saw blade of the multifunctional long arm saw of the present invention.

Description of the reference numerals

100. A frame; 110. an upper transverse frame; 120. a middle transverse frame; 130. a lower cross frame; 140. a left bracket;

200. a housing; 210. a guard plate; 220. a cover plate; 221. a first cover plate; 222. a second cover plate;

300. a platform; 310. a first strip-shaped plate; 320. a second strip; 311. a first bar-shaped groove;

321. a second strip groove;

410. a driven wheel; 411. a second side plate; 412. a second bearing housing; 413. a second rotating shaft;

420. an adjustment wheel; 421. a third bearing seat; 422. a third rotating shaft; 440. a square frame;

441. a connecting rod; 4411. a gasket; 4412. a nut; 442. adjusting the screw rod; 4421. a blocking plate; 443. a high-strength spring;

450. a partition plate;

430. a driving wheel; 431. a first side plate; 432. a first bearing housing; 433. a first rotating shaft;

500. a saw blade;

610. a blocking device; 611. a right-angle plate; 6111. a first gusset; 6112. a second rectangular plate;

612. a baffle plate; 613. a roller screw; 6131. a roller; 614. a pulley screw;

6141. a pulley;

620. a cross bar; 630. a vertical rod; 640. a blocking device base;

641. a locking device;

10. a motor; 20. a saw wheel; A. a work area.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1 to 3, the present embodiment provides a multifunctional long arm saw, which includes a frame 100, a driving wheel 430 disposed on the frame 100, a driven wheel 410, an adjusting wheel 420, a motor 10, and a worktable 300. Wherein, the rack 100 includes an upper cross frame 110, a middle cross frame 120, a lower cross frame 130 and a left bracket 140; the driving wheel 430 is arranged on the middle cross frame 120 and can rotate, the driven wheel 410 is arranged on the upper cross frame 110 and can rotate, the adjusting wheel 420 is arranged on the left support 140 and can rotate, the center positions of the driving wheel 430, the driven wheel 410 and the adjusting wheel 420 are arranged in a triangular mode, the annular saw blade is wound on the driving wheel 430, the driven wheel 410 and the adjusting wheel 420, and the adjusting wheel 420 is used for adjusting the tightness of the saw blade 500. The motor 10 is connected to the driving wheel 430 through a belt (not shown), the motor 10 is disposed on the lower cross frame 130, and the motor 10 is used for driving the driving wheel 430 to rotate, so that the driven wheel 410 and the adjusting wheel 420 are driven to rotate by the saw blade 500. The table 300 is set on the middle cross frame 120, and the saw blade 500 passes through the table 300.

In the present embodiment, as shown in fig. 6 and 7, the driving wheel 430 is disposed on the middle cross frame 120 through a first base (not shown in the figure) located below the middle cross frame 120, the first base includes two first side plates 431, two first bearing seats 432, two first bearings (not shown in the figure) and a first rotating shaft 433, the two first side plates 431 are respectively welded on two sides of the middle cross frame 120, the first bearing seats 432 are respectively disposed on the first side plates 431, the first bearings are disposed on the first bearing seats 432, the first side plates 431 are used for supporting the first rotating shaft 433, and the driving wheel 430 is disposed on the first rotating shaft 433. That is, one end of the first rotating shaft 433 passes through the first bearing of one first bearing seat 432, and the other end passes through the first bearing of the other first bearing seat 432 and then is connected to the driving wheel 430.

In the present embodiment, as shown in fig. 4 and 5, the driven wheel 410 is disposed on the upper cross frame 110 through a second base (not shown) located above the upper cross frame 110, the second base includes two second side plates 411, two second bearing seats 412, two second bearings (not shown), and a second rotating shaft 413, the two second side plates 411 are respectively welded to two sides of the upper cross frame 110, the second bearing seats 412 are respectively disposed on the second side plates 411, the second bearings are disposed on the second bearing seats 412, the second side plates 411 are used for supporting the second rotating shaft 413, and the driven wheel 410 is disposed on the second rotating shaft 413. That is, one end of the second rotating shaft 413 passes through the second bearing of one second bearing housing 412, and the other end of the second rotating shaft 413 passes through the second bearing of the other second bearing housing 412 and is connected to the driven wheel 410.

In the present embodiment, as shown in fig. 8 to 11, two connecting rods 441 are welded to the left bracket 140, one end of each connecting rod 441 is welded to the left bracket 140, a partition plate 450 is disposed at the other end of each connecting rod 441, and the partition plate 450 is connected to the connecting rods 441 by bolts. Specifically, in this embodiment, the other end of the connecting rod 441 is a threaded rod (as shown in fig. 11), the diameter of the threaded rod of the connecting rod 441 is smaller than the diameter of the main rod of the connecting rod, a through hole is formed in the spacer 450, and the threaded rod of the connecting rod 441 passes through the through hole and then is connected to the nut 4412, so that the spacer 450 can be fixed on the threaded rod. The adjusting wheel 420 is disposed on the connecting rod 441 through an adjusting base (not shown in the figures), the adjusting base includes a square frame 440, an adjusting screw 442 and a high-strength spring 443, the square frame 440 can slide on the connecting rod 441, one end of the adjusting screw 442 sequentially passes through the partition plate 450, one side of the square frame 440 and the high-strength spring 443 and then is welded to the blocking plate 4421 (the blocking plate 4421 can rotate along with the adjusting screw 442, and the blocking plate 4421 functions to prevent the third rotating shaft 422 from separating from the high-strength spring 443), wherein the adjusting screw 442 is screwed with the square frame 440 and the partition plate 450, the high-strength spring 443 is sleeved on the adjusting screw 442, that is, a portion of the adjusting screw 442 entering the square frame 440 is sleeved by the high-strength spring 443, one end of the high-strength spring 443 abuts against the blocking plate 4421, and the other end of the high-strength spring 443 abuts against the side plate 4401 of the square frame 440 (specifically, the other end of the high-strength spring 443 abuts against the side plate on the side through which the adjusting screw 442 passes), and the high-strength spring 443 is always in a compressed state; the square frame 440 is further provided with a third bearing seat 421 (fig. 9) and a third bearing (not shown in the figure), the third bearing is disposed on the third bearing seat 421, one end of the third rotating shaft 422 passes through the third bearing to be connected with the adjusting wheel 420, and the other end of the third rotating shaft 422 passes through the square frame 440 to be connected with the third bearing on the other side of the square frame 440. Thus, when the saw blade 500 needs to be tightened, the adjusting screw 442 is rotated to rotate outward, so that the high-strength spring 443 is further compressed, that is, the high-strength spring 443 presses inward one side wall 4401 of the square frame 440 (the side wall abutting against the high-strength spring 443), thereby moving the square frame 440 outward (the force is applied by the adjusting screw 442 to rotate outward, so that the portion of the adjusting screw 442 in the square frame 440 is reduced, and since one end of the adjusting screw 442 is fixedly connected with the blocking plate 4421, the blocking plate 4421 and the side wall of the square frame 440 press the high-strength spring 443 together, and the high-strength spring 443 is forced to start to compress, and at the same time, the high-strength spring 443 also starts to recover, and starts to press outward the square frame 440, thereby moving the square frame), that is, the high-strength spring 443 makes the square frame 440 slide on the connecting rod 441, since the third bearing seat is fixedly disposed on the square frame 440 and the third rotating shaft 422 is connected to the third bearing seat, the third rotating shaft 422 and the adjusting wheel 420 will also move outward, so that the saw blade 500 expands outward, thereby tensioning the saw blade. If it is desired to loosen saw blade 500, adjustment screw 442 is rotated in a reverse direction causing adjustment wheel 420 to move inwardly causing saw blade 500 to loosen.

In this embodiment, as shown in fig. 16, the middle cross frame 120 is provided with a stopping device 610, and the stopping device 610 is used for correcting the saw blade and preventing the saw blade 500 from being separated from the working track during the working process. The blocking device 610 comprises a right-angle plate 611, the right-angle plate 611 comprises a first right-angle plate 6111 and a second right-angle plate 6112, the first right-angle plate 6111 and the second right-angle plate 6112 are arranged perpendicularly, a part of the first right-angle plate 6111 is welded with the middle cross frame 120, the first right-angle plate 6111 is provided with two pulley screws 614, one end of each pulley screw 614 is connected with the first right-angle plate 6111 through a nut, and the other end of each pulley screw 614 is provided with a pulley 6141. The second right-angle plate 6112 is provided with a roller screw 613, one end of the roller screw 613 is connected with the second right-angle plate 6112 through a nut, the other end of the roller screw 613 is provided with a roller 6131, and the roller 6131 is provided with an annular groove (not shown in the figure). The second right-angle plate 6112 is further provided with a baffle 612, so that the saw blade 500 passes through the space between the two pulleys 6141 (the two pulleys 6141 can reduce the left-right shaking amplitude of the saw blade 500, and due to the adoption of a pulley structure, the saw blade 500 cannot be damaged even if the saw blade 500 touches the pulleys 6141), a part (without sawteeth) of the saw blade 500 is positioned in the annular groove (not shown in the figure) (because the saw blade 500 has backward moving power when working, the power comes from the movement of the wood plate, therefore, a part of the saw blade 500 is arranged in the annular groove, the backward moving of the saw blade can be effectively prevented), the baffle 612 is arranged in front of the working part of the saw blade 500 provided with sawteeth (the baffle 612 can prevent the saw blade from hurting people in work), and under the combined action of the three, the effect of stabilizing the saw blade 500 can be achieved in work. That is, the saw blade 500 passes in from above the stop 610, and in the stop 610, the saw blade 500 is positioned between the pulleys 6141 and then passes out from below the stop 610.

Furthermore, in the present embodiment, as shown in fig. 13 to 16, the upper cross frame 110 is also provided with a blocking device 610 (the structure of the blocking device is the same as that of the blocking device on the middle cross frame 120, and therefore, the detailed description thereof is omitted), the specific installation method comprises the steps that a blocking device base 640 is arranged on the upper cross frame 110, the base 640 is connected with the upper cross frame 110 through a screw (not shown in the figure), a vertical rod 630 and a first locking device 641 are inserted into the blocking device base 640, the first locking device 641 is used for adjusting the height of the vertical rod 630, one end of the vertical rod 630 is inserted into the blocking device base 640, the other end of the vertical rod 630 is inserted into a connecting column 660, a cross rod 620 and a second locking device 650 are arranged on the connecting column 660, the second locking device 650 is used for adjusting the length of the cross rod 620, one end of the cross rod 620 penetrates out of the connecting column 660, and the other end of the cross rod 620 is welded with a first straight angle plate. Specifically, in this embodiment, the first locking device 641 includes a first screw, the first screw is screwed with the blocking device base 640, that is, after one end of the first screw enters the blocking device base 640, the first screw abuts against the vertical rod 630, so that the vertical rod 630 can be kept connected with the blocking device base 640, when the height of the vertical rod 630 needs to be adjusted, the first screw only needs to be rotated outwards, so that the vertical rod 630 can slide upwards, and the height of the vertical rod 630 is increased (the height here refers to the height from the bottom end of the vertical rod 630 to the workbench, and in operation, if the thickness of the processed plate is thick, the height of the blocking device needs to be increased, and therefore, the purpose of increasing the height of the blocking device is achieved by increasing the height of the vertical rod 630); the second locking device 650 comprises a second screw rod, the second screw rod is screwed with the connecting column 660, specifically, in this embodiment, after the second screw rod of the second locking device 650 is screwed into the connecting column 660, the second screw rod abuts against the cross rod 620, and the second locking device 650 is continuously screwed until being screwed, so that the purpose that the second locking device 650 clamps the cross rod 620 is achieved, the cross rod 620 is kept horizontal, and the blocking device is prevented from colliding with the saw blade.

In this embodiment, as shown in fig. 12, a housing 200 is further disposed on the frame 100, the housing 200 includes a guard plate 210 and a cover plate 220, the guard plate 210 is connected to the cover plate 220 by a snap-fit connection, the housing 200 can cover the driven wheel 410 and the adjustment wheel 420, and the driven wheel 410, the adjustment wheel 420 and the saw blade 500 are covered by the housing 300 to avoid injury to an operator due to the fact that the driven wheel 410 and the adjustment wheel 420 are located above the workbench 300. In addition, in this embodiment, the cover plate 220 includes a first cover plate 221 and a second cover plate 222, the first cover plate 221 is used for covering the adjustment wheel 420 and the driven wheel 410, the second cover plate 222 is used for covering the blocking device 610 connected with the upper cross frame 110, and in operation, only a part of the exposed work table 300 can be observed, so that a transparent window is opened on the second cover plate 222, so that the working condition of more saw blades can be observed.

In this embodiment, as shown in fig. 17, a bar-shaped hole (not shown in the figure) and a circular hole (not shown in the figure) are formed in the table 300, the circular hole is formed in one end of the bar-shaped hole, a bar-shaped plate 310 is formed in the bar-shaped hole, a first bar-shaped groove 311 is formed in one end of the bar-shaped plate 310, a circular plate 320 is formed in the circular hole, a second bar-shaped groove 321 is formed in the circular plate 320, the first bar-shaped groove 311 and the second bar-shaped groove 321 are combined with each other to form a bar-shaped groove.

The utility model discloses a set up three saw wheel in frame 100, realized need not to change the size that the saw wheel can change work area A, simple and convenient has saved manufacturing cost.

In addition, in actual production, since the working area a is set according to the customer's reservation, the driving pulley 430 and the driven pulley 410 are fixedly mounted on the frame. In other embodiments, the base of the driving wheel 430 and the base of the driven wheel 410 may be made as movable bases, so that the driving wheel 430 and the driven wheel 410 can be adjusted in position according to the size of the working area.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A multi-functional long arm saw, characterized by, includes:

the device comprises a rack, a lifting mechanism and a lifting mechanism, wherein the rack comprises an upper transverse frame, a middle transverse frame, a lower transverse frame and a left bracket;

the adjusting mechanism comprises a driving wheel, a driven wheel and an adjusting wheel, wherein the driving wheel is arranged on the middle cross frame, the driven wheel is arranged on the upper cross frame, the adjusting wheels are all arranged on the left bracket, and the center positions of the driving wheel, the driven wheel and the adjusting wheel are arranged in a triangle;

the motor is connected with the driving wheel, arranged on the lower cross frame and used for driving the driving wheel to rotate;

the workbench is erected on the middle cross frame.

2. The multifunctional long arm saw of claim 1, wherein the driving wheel is disposed on the middle cross frame through a first base, and the first base is located below the middle cross frame, the first base includes two first side plates, two first bearing seats, two first bearings and a first rotating shaft, the two first side plates are respectively welded on two sides of the middle cross frame, the first bearing seats are respectively disposed on the first side plates, the first bearings are disposed on the first bearing seats, the first side plates are used for supporting the first rotating shaft, and the driving wheel is disposed on the first rotating shaft.

3. The multifunctional long arm saw of claim 1, wherein the driven wheel is disposed on the upper cross frame through a second base, the second base is located above the upper cross frame, the second base comprises two second side plates, two second bearing seats, two second bearings and a second rotating shaft, the two second side plates are respectively welded on two sides of the upper cross frame, the second bearing seats are respectively disposed on the second side plates, the second bearings are disposed on the second bearing seats, the second side plates are used for supporting the second rotating shaft, and the driven wheel is disposed on the second rotating shaft.

4. The multifunctional long arm saw of claim 1, wherein two connecting rods are welded on the left support, one end of each connecting rod is welded with the left support, a partition plate is arranged at the other end of each connecting rod, the partition plate is connected with the connecting rods through bolts, the adjusting wheel is arranged on the connecting rods through an adjusting base, the adjusting base comprises a square frame, an adjusting screw rod and a high-strength spring, the square frame can slide on the connecting rods, and one end of the adjusting screw rod sequentially penetrates through the partition plate, one side of the square frame and the high-strength spring and then is welded with the blocking plate;

the square frame is further provided with a third bearing seat and a third bearing, the third bearing is arranged on the third bearing seat, a third rotating shaft penetrates through the third bearing and is connected with the regulating wheel, and the third rotating shaft is tightly connected with the high-strength spring.

5. The multifunctional long arm saw as claimed in claim 1, wherein the middle cross frame is provided with a blocking device for correcting a saw blade, the blocking device comprises a square plate, the square plate comprises a first square plate and a second square plate, the first square plate and the second square plate are arranged perpendicularly, a part of the first square plate is welded with the middle cross frame, the second square plate is provided with a roller screw, one end of the roller screw is connected with the second square plate through a nut, the other end of the roller screw is provided with a roller, and the roller is provided with an annular groove;

the second right-angle plate is also provided with a baffle plate, and the baffle plate is used for preventing the saw blade from derailing;

the first straight angle plate is provided with two pulley screws, one end of each pulley screw is connected with the first straight angle plate through a nut, the other end of each pulley screw is provided with a pulley, a saw blade penetrates between the two pulleys, and one part of the saw blade is located in the annular groove.

6. The multifunctional long arm saw is characterized in that a blocking device is also arranged on the upper cross frame, a blocking device base is arranged on the upper cross frame, the base is connected with the upper cross frame through a screw rod, a vertical rod and a first locking device are inserted into the blocking device base, one end of the vertical rod is inserted into the blocking device base, the other end of the vertical rod is inserted into the connecting column, a cross rod and a second locking device are arranged on the connecting column, one end of the cross rod penetrates out of the connecting column, and the other end of the cross rod is welded with a first straight angle plate of the blocking device.

7. The multi-function long arm saw of claim 6, wherein said first locking means comprises a first threaded rod threadedly engaged with said blocking means base; the second locking device comprises a second screw rod, and the second screw rod is in threaded connection with the connecting column.

8. The multifunctional long arm saw of claim 1, wherein the frame is further provided with a housing, the housing comprises a guard plate and a cover plate, the guard plate and the cover plate are connected through a buckle, and the housing can cover the driven wheel and the adjusting wheel.

9. The multifunctional long arm saw as claimed in claim 1, wherein a bar-shaped hole and a circular hole are formed in the table, the circular hole is formed in one end of the bar-shaped hole, a bar-shaped plate is arranged on the bar-shaped hole, a first bar-shaped groove is formed in one end of the bar-shaped plate, a circular plate is arranged on the circular hole, a second bar-shaped groove is formed in the circular plate, the first bar-shaped groove and the second bar-shaped groove are combined with each other to form a bar-shaped groove, and the bar-shaped groove is used for a saw blade to pass through.