Swing arm power mechanism and lithium battery cutting machine

Abstract

The invention belongs to the technical field of steel rail sawing machines, and particularly relates to a swing arm power mechanism and a lithium battery cutting machine. The input end of the planetary gear reducer is in transmission connection with the motor output end of the lithium battery cutting machine; the eccentric power mechanism is connected with the output end of the planetary gear reduction gearbox; the eccentric power mechanism comprises a rotating disc, an eccentric pin, a swing rod, a kidney-shaped groove and a connecting shaft sleeve. The output end of the planetary gear reduction gearbox is provided with the rotating disc, the rotating disc is provided with an eccentric pin, the eccentric pin is movably connected with the kidney-shaped groove in a clamped mode, the kidney-shaped groove is formed in the lower end of the swing rod, the upper end of the swing rod is provided with the connecting shaft sleeve, and the connecting shaft sleeve is connected with the connecting shaft sleeve. And the connecting shaft sleeve is rotationally mounted on a connecting disc of the lithium battery cutting machine. According to the steel rail swinging cutting device, automatic swinging cutting of steel rails can be achieved, the situation that an existing operator needs to hold the steel rails by hands for swinging cutting is avoided, and the labor intensity during operation is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of rail sawing machines, and in particular relates to a swing arm power mechanism and a lithium battery cutting machine. Background Art

[0002] A rail cutter is a specialized cutting device designed for rapid rail cutting. It is frequently used during rail laying, repair, and maintenance operations, and is a key piece of track maintenance equipment. Since rail cutting is often performed outdoors, rail cutters primarily rely on lithium batteries as a power source. However, current portable lithium-ion rail cutters are bulky, requiring operators to lift the entire machine before cutting the rails. The machine also needs to be moved up and down during the cutting process, which is time-consuming, labor-intensive, and labor-intensive. Although the existing technology can use a rail-fixed swing frame to perform swing sawing to solve the problem of high labor intensity, such as the lithium-ion rail saw machine and its rail-fixed swing frame with patent publication number CN219598270U, ​​which includes a linkage swing arm, a clamping claw and a fixed pin; one end of the linkage swing arm is fixed with the fixed pin, and the other end is rotationally locked with the clamping claw, and the clamping claw includes: a U-shaped clamping plate, a connecting plate, a positioning block and a limit hook rod; the U-shaped clamping plates on the front and rear sides are connected and fixed by two connecting plates, wherein the positioning block is slidably plugged and locked on the connecting plate on the right side, and the limit hook rod is rotationally locked on the front side wall of the U-shaped clamping plate on the front side. Through the cooperation of the linkage swing arm, the clamping claw and the fixed pin, the lithium-ion rail saw machine can be fixed on the rail to achieve swing sawing.

[0003] However, although the operator of the lithium-ion cutting machine in the prior art can use the swing frame to perform labor-saving swing sawing on the rail, the operator still needs to apply force by hand to make the saw swing up and down, and the automatic swing cutting function cannot be realized. Therefore, the present invention needs to develop a method that uses the power source of the existing cutting machine as the power for automatic swinging, that is, how to optimize the structure of the existing cutting machine so that it can realize the function of cutting the rail while automatically swinging up and down. Summary of the Invention

[0004] The purpose of the present invention is to provide a swing arm power mechanism and a lithium battery cutting machine. The present invention can realize automatic swing cutting of rails, avoids the need for existing operators to hold the swing cutting function, and reduces the labor intensity during operation.

[0005] In order to solve the above technical problems, the present invention provides a swing arm power mechanism, comprising:

[0006] A planetary gear reducer, the input end of which is connected to the output end of the motor of the lithium-ion cutting machine;

[0007] An eccentric power mechanism is connected to the output end of the planetary gear reducer; wherein the eccentric power mechanism includes: a rotating disc, an eccentric pin, a swing rod, a waist-shaped groove and a connecting sleeve; the output end of the planetary gear reducer is provided with the rotating disc, the rotating disc is provided with an eccentric pin, the eccentric pin is movably connected to the waist-shaped groove by snapping, the waist-shaped groove is opened at the lower end of the swing rod, the upper end of the swing rod is provided with the connecting sleeve, and the connecting sleeve is rotatably installed on the connecting disc of the lithium battery cutting machine.

[0008] Preferably, the planetary gear reducer includes: a mounting sleeve, a bearing 1, an input shaft, an output shaft, a sun gear 1, a planetary disc carrier and an inner ring gear; the input shaft and the output shaft are rotatably mounted on both ends of the mounting sleeve through the bearing 1, the sun gear 1 is sleeved on the input shaft, the inner ring gear is installed in the mounting sleeve, the planetary disc carrier with four-stage transmission is meshed and stacked on the inner ring gear, and the first-stage planetary disc carrier is meshed and connected to the sun gear 1, and the fourth-stage planetary disc carrier is connected to the output shaft.

[0009] Preferably, the planetary disc carrier includes: a planetary disc seat, planetary gears and sun gear 2; a plurality of the planetary gears are circumferentially mounted on one side of the planetary disc seat, wherein the sun gear 2 is axially mounted on the other side of the planetary disc seat of the first to third stages; in the planetary disc carrier of the first stage, the planetary gears are respectively meshed and connected with the sun gear 1 and the inner ring gear; in the planetary disc carrier of the second to fourth stages, the planetary gears are respectively meshed and connected with the sun gear 2 and the inner ring gear.

[0010] Preferably, the mounting cylinder seat includes: a cylinder shell, an end cover, a stop washer, a separator and a slot; the end covers are detachably locked at both ends of the cylinder shell by bolts, two bearings are stacked and assembled in the end cover on each side, and the two bearings are stopped and limited by a pair of stop washers, a plurality of separators are circumferentially provided inside the cylinder shell to divide the inner cavity of the cylinder shell into two mounting cavities, and a plurality of slots are circumferentially opened on the inner wall of the cylinder shell.

[0011] Preferably, two inner gear rings are provided, and a plurality of clamping blocks are provided circumferentially on the outer wall of the inner gear ring, which are clamped in the clamping groove through the clamping blocks to respectively assemble the two inner gear rings in the two mounting cavities, and each inner gear ring is limited and tightened by the end cover and the partition block; the eccentric pin also includes a sleeved rolling bearing, which is movably connected to the waist-shaped groove through the clamping bearing.

[0012] Preferably, the connecting sleeve includes: a connecting seat, a connecting sleeve, a bearing 2, a locking block and a rivet pin; the connecting seat is locked and connected to the upper end of the swing rod by a locking bolt, the connecting sleeve is slidably inserted in the connecting seat and is locked and fixed by the rivet pin, the two bearings 2 are rotatably installed in the shaft cavity of the connecting disk at intervals, two stop washers 2 are embedded in the shaft cavity, and the connecting sleeve also includes an integrally formed stop ring, which limits one bearing 2 through the stop ring and one of the stop washers 2. The locking block is threadedly locked on the connecting sleeve, and cooperates with the other stop washer 2 to limit and fix the other bearing 2, and the end face of the connecting sleeve also includes spline teeth for engaging with the rotatable and lockable spline tooth seat on the external connecting plug shaft; the inner cavity of the connecting sleeve is an integrated molding of three sections with gradually decreasing inner diameters, and the three sections of variable diameter sections are connected by a conical surface transition, and are threadedly locked with the external connecting plug shaft through the section cavity with the smallest diameter.

[0013] The present invention also provides a lithium battery cutting machine, comprising the swing arm power mechanism as described above, and further comprising:

[0014] Drive motor;

[0015] Connecting plate;

[0016] Cutterhead assembly;

[0017] A driving pulley, a driven pulley, a transmission belt, a transition pulley and a power pulley; the driving motor is installed at one end of the connecting disk, and the cutter disc assembly is rotatably installed at the other end. The output end of the driving motor is provided with the driving pulley, the shaft end of the cutter disc assembly is provided with the driven pulley, the input end of the planetary gear reduction box is provided with the power pulley, the transmission belt is wound around the driving pulley, the driven pulley and the power pulley, and the transition pulley is rotatably installed on the connecting disk between the power pulley and the driving pulley, and is wound around the outer edge of the transmission belt.

[0018] Preferably, it also includes a tensioning mechanism, which includes: a concave cavity, a floating rod, a straight groove, a tensioning pulley, a fixing rod and a tensioning spring; the concave cavity is opened on the connecting disk, the fixing rod is vertically installed in the concave cavity, the tensioning spring is sleeved on the fixing rod, the upper and lower ends of the tensioning spring are respectively abutted against the floating rod and the concave cavity, and the fixing rod is movably inserted in the straight groove, the straight groove is opened on the floating rod, one end of the floating rod is rotatably installed on the concave cavity, and the tensioning pulley is rotatably installed on the other end, and the tensioning pulley is located between the power pulley and the driven pulley, and is wrapped around the outer edge of the transmission belt.

[0019] Preferably, it also includes a handle switch assembly, a battery pack, a handle, a power adapter socket and a placement bottom rod; the handle switch assembly and the power adapter socket are installed on the drive motor on the side away from the blade disc assembly, the battery pack is detachably installed above the drive motor, and the handle and the placement bottom rod are respectively installed above and below the drive motor.

[0020] Preferably, the cutter disc assembly includes: a sawing cutter disc, a stopping cone seat, a clamping cone seat, a stopping sleeve, a locking screw, a protective cover, a clamping ring, a pressure plate, a clamping screw and a clamping spring; the shaft end sleeve of the driven pulley is provided with two stopping cone seats symmetrically arranged at intervals, the clamping cone seat is abutted between the two stopping cone seats, the sawing cutter disc is clamped between the two clamping cone seats, the shaft hole of the sawing cutter disc is abutted against the stopping sleeve, the stopping sleeve is sleeved on the shaft end of the driven pulley, and the stopping The movable shaft sleeve is in contact with the clamping cone seat close to the side of the connecting disk, and is threadably locked to the shaft end of the driven pulley by the locking screw thread, and the stop cone seat is clamped and fixed; the clamping rings are clamped on both sides of the shaft seat of the protective cover, and the clamping rings are assembled between the pressure plate and the connecting disk, and the clamping screw is connected to the pressure plate and movably connected to the connecting disk, and the clamping spring is sleeved on the clamping screw, and the connecting disk and the pressure plate are clamped and fixed by the compression spring.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention adopts a planetary gear reduction box and an eccentric power mechanism, which can reduce the output power of the drive motor used to drive the cutter disc assembly on the cutting machine through four-stage transmission and output it to the eccentric power mechanism. The action of the eccentric power mechanism drives the cutting machine to realize the automatic swing sawing function, solving the problem that the existing cutting machine needs to be manually handheld and swing cut.

[0023] 2. The present invention can adaptively adjust the tension of the transmission belt through the designed tensioning mechanism, so that the power transmission between the transmission belt and each transmission pulley is more stable.

[0024] 3. The present invention improves the tightness of the thread locking by designing a connecting sleeve and an external connecting plug-in shaft structure, and adopts a tapered section cavity to cooperate with the thread locking. By adding spline teeth and a spline tooth seat, the deflection angle of the cutter disc assembly on the cutting machine relative to the point where the rail is to be cut can be adjusted, that is, the overall deflection angle of the cutting machine and the connecting plug-in shaft when assembled can be adjusted so that it can perform sawing at a more appropriate angle.

[0025] 4. The present invention uses a lithium battery pack to provide working power for the entire machine. Compared with traditional internal combustion engines, it is lighter and has a more compact structure.

[0026] 5. The present invention cooperates with the above-mentioned clamping ring, pressure plate, clamping screw and clamping spring. By utilizing the elastic force of the clamping spring, the protective cover can be rotatably installed between the pressure plate and the connecting plate. That is, by rotating the protective cover, the circumferential installation angle of the protective cover can be adjusted to avoid interference with the sawing cutter head when cutting the rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of a swing arm power mechanism provided by the present invention.

[0028] Figure 2 It is a cross-sectional view of a swing arm power mechanism provided by the present invention.

[0029] Figure 3 It is a structural diagram of the planetary disc carrier provided by the present invention.

[0030] Figure 4 It is a cross-sectional view of the planetary disc carrier provided by the present invention.

[0031] Figure 5 It is a cross-sectional view of the connecting sleeve provided by the present invention.

[0032] Figure 6 This is a structural diagram of the tensioning mechanism provided by the present invention installed on the connecting disk.

[0033] Figure 7 It is an enlarged structural diagram of the tensioning mechanism provided by the present invention.

[0034] Figure 8 It is a cross-sectional view of the cutter head assembly provided by the present invention.

[0035] Figure 9 It is a structural diagram of the protective cover provided by the present invention.

[0036] Figure 10 It is a cross-sectional view of the protective cover provided by the present invention.

[0037] Figure 11 This is a structural front view of a lithium battery cutting machine provided by the present invention.

[0038] Figure 12 This is a rear view of the structure of a lithium battery cutting machine provided by the present invention.

[0039] In the figure: 1-planetary gear reduction box, 11-mounting cylinder seat, 111-cylinder shell, 112-end cover, 113-stop washer 1, 114-separator, 115-slot, 116-block, 12-bearing 1, 13-input shaft, 14-output shaft, 15-sun gear 1, 16-planetary disc frame, 161-planetary disc seat, 162-planetary gear, 163-sun gear 2, 17-inner ring gear, 2-eccentric power mechanism, 21-rotating disc, 22-eccentric pin, 23-swing rod, 24-waist groove, 25-connecting sleeve, 251-connecting seat, 252-connecting sleeve, 253-bearing 2, 254-locking block, 255-rivet pin, 256-stop washer 2, 2 57-stop ring, 258-spline teeth, 3-drive motor, 4-connecting disc, 41-driving pulley, 42-driven pulley, 43-transmission belt, 44-transition wheel, 45-power pulley, 5-cutter assembly, 51-sawing cutter disc, 52-stop cone seat, 53-pressing cone seat, 54-stop sleeve, 55-locking screw, 56-protective cover, 57-pressing ring, 58-pressure plate, 59-pressing screw, 60-pressing spring, 6-tensioning mechanism, 61-concave cavity, 62-floating rod, 63-slot, 64-tensioning wheel, 65-fixing rod, 66-tensioning spring, 7-handle switch assembly, 8-battery pack, 9-handle, 91-bottom rod, 10-power adapter socket. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0041] like Figures 1 to 12 As shown, the embodiment of the present invention specifically provides a swing arm power mechanism, including:

[0042] The planetary gear reducer 1 has an input end connected to the output end of the motor of the lithium-ion cutting machine;

[0043] The eccentric power mechanism 2 is connected to the output end of the planetary gear reducer 1. The eccentric power mechanism 2 includes a rotating disc 21, an eccentric pin 22, a swinging rod 23, a waist-shaped groove 24, and a connecting sleeve 25. The output end of the planetary gear reducer 1 is provided with a rotating disc 21, on which an eccentric pin 22 is provided. The eccentric pin 22 is movably connected to the waist-shaped groove 24. The waist-shaped groove 24 is provided at the lower end of the swinging rod 23. The upper end of the swinging rod 23 is provided with a connecting sleeve 25, which is rotatably mounted on the connecting disc 4 of the lithium battery cutting machine. When the eccentric power mechanism 2 is in operation, the eccentric disc is driven to rotate by the planetary gear reducer 1. Through the transmission cooperation between the eccentric pin 22 and the waist-shaped groove 24, the swinging rod 23 and the lithium battery cutting machine mounted thereon are driven to perform a reciprocating swing motion with the connecting sleeve 25 as the rotation center, thereby realizing the automatic swing sawing function of the lithium battery cutting machine.

[0044] The planetary gear reducer 1 comprises a mounting base 11, a bearing 12, an input shaft 13, an output shaft 14, a sun gear 15, a planetary carrier 16, and an inner ring gear 17. The input shaft 13 and the output shaft 14 are rotatably mounted on both ends of the mounting base 11 via bearings 12. The sun gear 15 is sleeved on the input shaft 13, and an inner ring gear 17 is mounted within the mounting base 11. A four-stage planetary carrier 16 is meshed and stacked on the inner ring gear 17. The first-stage planetary carrier 16 is meshed and connected to the sun gear 15, and the fourth-stage planetary carrier 16 is connected to the output shaft 14. Through the above-described configuration of the planetary gear reducer 1, the power input through the input shaft 13 can be reduced in four stages and then output to the eccentric power mechanism 2 via the output shaft 14, thereby ensuring a lower speed for the eccentric power mechanism 2. That is, through the cooperation of the sun gear 15, the inner ring gear 17 and the planetary disc carrier 16 of the four-stage transmission, a four-stage transmission deceleration can be achieved to achieve the speed ratio switching of the drive motor 3 and the eccentric power mechanism 2.

[0045] Preferably, the planetary disc carrier 16 includes: a planetary disc seat 161, planetary gears 162 and sun gear 2 163; a plurality of planetary gears 162 are circumferentially mounted on one side of the planetary disc seat 161, wherein the sun gear 2 163 is axially mounted on the other side of the planetary disc seat 161 of the first to third stages; in the first-stage planetary disc carrier 16, the planetary gears 162 are respectively meshed and connected with the sun gear 1 15 and the inner ring gear 17; in the second to fourth-stage planetary disc carriers 16, the planetary gears 162 are respectively meshed and connected with the sun gear 2 163 and the inner ring gear 17. When the above-mentioned planetary gear reducer 1 is in operation, the input power is driven to the input shaft 13 through the power pulley 45 to drive the sun gear 15 to rotate. The sun gear 15 drives the planetary gears 162 in the first-stage planetary disc carrier 16 to revolve on the inner ring 17 while generating rotation, thereby driving the planetary disc seat 161 in the first-stage planetary disc carrier 16 and the sun gear 2 163 at the bottom to rotate, and then transmit the reduction in speed through the planetary disc carriers 16 of the next three stages in sequence.

[0046] The mounting base 11 includes: a cylinder shell 111, an end cover 112, a stop washer 113, a separator 114 and a slot 115; the two ends of the cylinder shell 111 are detachably locked with the end covers 112 by bolts, and two bearings 12 are stacked and assembled in the end cover 112 on each side, and the two bearings 12 are stopped and limited by the stop washer 113 to reduce the degree of axial movement of the bearing 12 and improve the stability of the reduction gearbox during operation. A number of separators 114 are circumferentially provided inside the cylinder shell 111 to divide the inner cavity of the cylinder shell 111 into two installation cavities, and a number of slots 115 are circumferentially opened on the inner wall of the cylinder shell 111.

[0047] There are two inner gear rings 17, and a plurality of clamping blocks 116 are circumferentially provided on the outer wall of the inner gear ring 17. The clamping blocks 116 are clamped in the clamping grooves 115 to respectively assemble the two inner gear rings 17 in the two mounting cavities, and each inner gear ring 17 is limited and pressed by the end cover 112 and the separator block 114 to achieve the purpose of facilitating assembly and avoiding radial or axial movement of the inner gear ring 17 to ensure the stability of the meshing transmission of the planetary gear 162 with it; the eccentric pin 22 also includes a sleeved rolling bearing, which is movably connected to the waist groove 24 by clamping the rolling bearing, thereby extending the service life and avoiding long-term wear of the eccentric pin 22.

[0048] The connecting sleeve 25 includes: a connecting seat 251, a connecting sleeve 252, a bearing 253, a locking block 254 and a rivet pin 255; the connecting seat 251 is locked and connected to the upper end of the swing rod 23 by a locking bolt, and the connecting sleeve 252 is slidably inserted in the connecting seat 251 and locked and fixed by a rivet pin 255. The two bearings 253 are installed in the shaft cavity of the connecting disk 4 at intervals and rotated. Two stop washers 256 are embedded in the shaft cavity. The connecting sleeve 252 also includes an integrally formed stop ring 257, which is used to fix a bearing through the stop ring 257 and a stop washer 256. The second bearing 253 is fixed in position and is screwed to the connecting sleeve 252 through a locking block 254, and cooperates with another stop washer 256 to fix the other bearing 253 in position. The end surface of the connecting sleeve 252 also includes a spline tooth 258 for engaging with the rotatable and lockable spline tooth 258 seat on the external connecting plug shaft. The inner cavity of the connecting sleeve 252 is an integrated arrangement of three sections with gradually decreasing inner diameters, and the three sections of the reduced diameter sections are connected by a conical surface transition. At the same time, the section with the smallest diameter is connected to the external connecting plug shaft through a threaded locking connection. When the external connecting plug shaft and the connecting sleeve 25 are screwed, the three sections of the reduced diameter sections are connected by a conical surface transition, which can make the external connecting plug shaft and the connecting sleeve 25 fit more tightly, preventing axial movement and strengthening the locking effect.

[0049] The present invention also provides a lithium battery cutting machine, comprising the above-mentioned swing arm power mechanism, and further comprising:

[0050] Drive motor 3;

[0051] Connecting plate 4;

[0052] Cutter head assembly 5;

[0053] A driving pulley 41, a driven pulley 42, a transmission belt 43, a transition pulley 44 and a power pulley 45; a driving motor 3 is installed on one end of the connecting disk 4, and a cutter disc assembly 5 is rotatably installed on the other end. The output end of the driving motor 3 is provided with a driving pulley 41, and the shaft end of the cutter disc assembly 5 is provided with a driven pulley 42. The input end of the planetary gear reducer 1 is provided with a power pulley 45. A transmission belt 43 is wound around the driving pulley 41, the driven pulley 42 and the power pulley 45. The transition pulley 44 is rotatably installed on the connecting disk 4 between the power pulley 45 and the driving pulley 41, and is wound around the outer edge of the transmission belt 43. When the above-mentioned lithium-ion cutting machine is working, the drive motor 3 is controlled to work, and the drive is transmitted through the active pulley 41, the driven pulley 42 and the transmission belt 43 to drive the cutter disc assembly 5 to rotate at high speed to cut the rail; and through the layout of the above-mentioned transition wheel 44, the wrap angle of the transmission belt 43 between the active pulley 41 and the power pulley 45 can be increased; through the layout of the power pulley 45, the output power of the drive motor 3 can be transmitted to the planetary gear reduction box 1, providing the lithium-ion cutting machine with a driving force for up and down swing cutting, avoiding the use of an additional set of motors externally, reducing the structural weight and reducing the production cost.

[0054] It also includes a tensioning mechanism 6, which includes: a concave cavity 61, a floating rod 62, a straight groove 63, a tensioning pulley 64, a fixed rod 65 and a tensioning spring 66; a concave cavity 61 is provided on the connecting disk 4, and a fixed rod 65 is vertically installed in the concave cavity 61. A tensioning spring 66 is sleeved on the fixed rod 65, and the upper and lower ends of the tensioning spring 66 are respectively abutted against the floating rod 62 and the concave cavity 61, and the fixed rod 65 is movably inserted in the straight groove 63, and the straight groove 63 is provided on the floating rod 62. One end of the floating rod 62 is rotatably installed on the concave cavity 61, and the other end is rotatably installed with a tensioning pulley 64. The tensioning pulley 64 is located between the power pulley 45 and the driven pulley 42, and is wrapped around the outer edge of the transmission belt 43. When the above-mentioned tensioning mechanism 6 is in use, the elastic action of the arranged tensioning spring 66 can adaptively adjust the tensioning force of the tensioning wheel 64 to realize automatic adjustment of the tensioning degree of the transmission belt 43, and the floating rod 62 is opened through the I-shaped groove 63 to avoid movement interference with the fixed rod 65, and can provide the tensioning wheel 64 with up and down swinging action.

[0055] The tool further includes a handle switch assembly 7, a battery pack 8, a handle 9, a power adapter socket 10, and a placement base 91. The handle switch assembly 7 and the power adapter socket 10 are mounted on the drive motor 3 on the side away from the cutterhead assembly 5. The battery pack 8 is detachably mounted above the drive motor 3. The handle 9 and the placement base 91 are mounted above and below the drive motor 3, respectively. The battery pack 8 provides the operating power source, and the power adapter socket 10 allows the battery pack 8 to be removed when not in use and to be connected to the power cord for operation, making it easy for the operator to select the power mode.

[0056] The cutter disc assembly 5 includes: a sawing cutter disc 51, a stopping cone seat 52, a pressing cone seat 53, a stopping sleeve 54, a locking screw 55, a protective cover 56, a pressing ring 57, a pressure plate 58, a pressing screw 59 and a pressing spring 60; the shaft end sleeve of the driven pulley 42 is provided with two symmetrically spaced stopping cone seats 52, a pressing cone seat 53 is abutted between the two stopping cone seats 52, and the sawing cutter disc 51 is pressed between the two pressing cone seats 53, the shaft hole of the sawing cutter disc 51 is abutted against the stopping sleeve 54, and the stopping sleeve 54 is sleeved on the driven pulley The shaft end of the driven pulley 42 is connected to the stopper sleeve 54, and the stopper sleeve 54 abuts against the compression cone seat 53 on the side of the connecting disk 4. The stopper sleeve 54 is screwed and locked to the shaft end of the driven pulley 42 by the locking screw 55, and the stopper sleeve 52 is pressed and fixed. The shaft seat of the protective cover 56 is pressed with a compression ring 57 on both sides. The compression ring 57 is assembled between the pressure plate 58 and the connecting disk 4. The compression screw 59 is connected to the pressure plate 58 and is movably connected to the connecting disk 4. The compression screw 59 is provided with a compression spring 60, which is used to compress and fix the connecting disk 4 and the pressure plate 58. The cooperation of the stopper sleeve 52, the compression cone seat 53, the stopper sleeve 54 and the locking screw 55 can realize the disassembly and assembly of the sawing disc 51, and the assembly structure can increase the locking effect of the sawing disc 51 after assembly. Through the cooperation of the above-mentioned clamping ring 57, pressure plate 58, clamping screw 59 and clamping spring 60, the protective cover 56 can be rotatably installed between the pressure plate 58 and the connecting plate 4 by utilizing the elastic force of the clamping spring 60, that is, by rotating the protective cover 56, the circumferential installation angle of the protective cover 56 can be adjusted to avoid interference with the sawing disc 51 when cutting the rails.

[0057] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A swing arm power mechanism, characterized in that: include: A planetary gear reduction box (1), the input end of which is connected to the output end of the motor of the lithium-ion cutting machine; An eccentric power mechanism (2) is connected to the output end of the planetary gear reduction box (1); wherein the eccentric power mechanism (2) comprises: a rotating disc (21), an eccentric pin (22), a swing rod (23), a waist-shaped groove (24) and a connecting shaft sleeve (25); the output end of the planetary gear reduction box (1) is provided with the rotating disc (21), the rotating disc (21) is provided with an eccentric pin (22), the eccentric pin (22) is movably connected to the waist-shaped groove (24), the waist-shaped groove (24) is opened at the lower end of the swing rod (23), the upper end of the swing rod (23) is provided with the connecting shaft sleeve (25), and the connecting shaft sleeve (25) is rotatably mounted on the connecting disc (4) of the lithium battery cutting machine.

2. The swing arm power mechanism according to claim 1, characterized in that: The planetary gear reduction box (1) comprises: a mounting sleeve (11), a bearing (12), an input shaft (13), an output shaft (14), a sun gear (15), a planetary disc carrier (16) and an inner gear ring (17); the input shaft (13) and the output shaft (14) are rotatably mounted on both ends of the mounting sleeve (11) through the bearing (12); the sun gear (15) is sleeved on the input shaft (13); the inner gear ring (17) is mounted in the mounting sleeve (11); the planetary disc carrier (16) of four-stage transmission is meshed and stacked on the inner gear ring (17); the first-stage planetary disc carrier (16) is meshed and connected to the sun gear (15); the fourth-stage planetary disc carrier (16) is connected to the output shaft (14).

3. The swing arm power mechanism according to claim 2, characterized in that: The planetary disc carrier (16) comprises: a planetary disc seat (161), planetary gears (162) and a second sun gear (163); a plurality of the planetary gears (162) are circumferentially mounted on one side of the planetary disc seat (161), wherein the second sun gear (163) is axially mounted on the other side of the first to third stage planetary disc seats (161); in the first stage planetary disc carrier (16), the planetary gears (162) are respectively meshed and connected with the first sun gear (15) and the inner gear ring (17); in the second to fourth stage planetary disc carriers (16), the planetary gears (162) are respectively meshed and connected with the second sun gear (163) and the inner gear ring (17).

4. The swing arm power mechanism according to claim 2, characterized in that: The mounting cartridge seat (11) comprises: a cartridge shell (111), an end cover (112), a stop washer (113), a spacer (114) and a slot (115); the two ends of the cartridge shell (111) are detachably locked with the end covers (112) by bolts, two bearings (12) are stacked and assembled in each end cover (112), and the two bearings (12) are stopped and limited by the stop washer (113); a plurality of spacer blocks (114) are circumferentially provided inside the cartridge shell (111) to divide the inner cavity of the cartridge shell (111) into two mounting cavities, and a plurality of slots (115) are circumferentially provided on the inner wall of the cartridge shell (111).

5. The swing arm power mechanism according to claim 4, characterized in that: Two inner gear rings (17) are provided, and a plurality of clamping blocks (116) are provided on the outer wall of the inner gear ring (17) in the circumferential direction. The clamping blocks (116) are clamped in the clamping grooves (115) to respectively assemble the two inner gear rings (17) in the two mounting cavities, and each inner gear ring (17) is limited and pressed by the end cover (112) and the partition block (114); the eccentric pin (22) also includes a sleeved rolling bearing, which is movably connected to the waist groove (24) by clamping the rolling bearing.

6. The swing arm power mechanism according to claim 1, characterized in that: The connecting sleeve (25) includes: a connecting seat (251), a connecting sleeve (252), a second bearing (253), a locking block (254) and a rivet pin (255); the connecting seat (251) is locked and connected to the upper end of the swing rod (23) by a locking bolt, the connecting sleeve (252) is slidably inserted into the connecting seat (251) and locked and fixed by the rivet pin (255), the two second bearings (253) are installed in the shaft cavity of the connecting disk (4) with interval rotation, and two second stop washers (256) are embedded in the shaft cavity, and the connecting sleeve (252) also includes a stop ring (257) formed in one piece, which is connected to the stop ring (257) by the stop ring (257) and one of the stop washers. The second washer (256) limits and fixes one of the second bearings (253), and is threadedly locked on the connecting sleeve (252) through the locking block (254), and cooperates with another second stop washer (256) to limit and fix the other second bearing (253), and the end surface of the connecting sleeve (252) also includes a spline tooth (258) for engaging with a rotatable and lockable spline tooth (258) seat on the external connecting plug shaft; the inner cavity of the connecting sleeve (252) is an integrated molding of three sections with gradually decreasing inner diameters, and the three sections of the variable diameter sections are connected by a conical surface transition, and are threadedly locked with the section cavity with the smallest diameter and the external connecting plug shaft.

7. A lithium battery cutting machine, comprising a swing arm power mechanism according to any one of claims 1 to 6, characterized in that: Also includes: Drive motor (3); Connecting plate (4); Cutter head assembly (5); A driving pulley (41), a driven pulley (42), a transmission belt (43), a transition wheel (44) and a power pulley (45); one end of the connecting disc (4) is mounted with the driving motor (3), and the other end is rotatably mounted with the cutter head assembly (5); the output end of the driving motor (3) is provided with the driving pulley (41), the shaft end of the cutter head assembly (5) is provided with the driven pulley (42), the input end of the planetary gear reduction box (1) is provided with the power pulley (45), the driving pulley (41), the driven pulley (42) and the power pulley (45) are wound with the transmission belt (43), and the transition wheel (44) is rotatably mounted on the connecting disc (4) between the power pulley (45) and the driving pulley (41), and is wound with the outer edge of the transmission belt (43).

8. A lithium battery cutting machine as claimed in claim 7, characterized in that: The invention also includes a tensioning mechanism (6), wherein the tensioning mechanism (6) includes: a concave cavity (61), a floating rod (62), a straight groove (63), a tension wheel (64), a fixed rod (65) and a tensioning spring (66); the concave cavity (61) is opened on the connecting disk (4), the fixed rod (65) is vertically installed in the concave cavity (61), the tensioning spring (66) is sleeved on the fixed rod (65), and the upper and lower ends of the tensioning spring (66) are respectively connected to the floating rod ( 62) and the concave cavity (61) are in contact with each other, and the fixing rod (65) is movably inserted into the I-shaped groove (63), and the I-shaped groove (63) is opened on the floating rod (62). One end of the floating rod (62) is rotatably mounted on the concave cavity (61), and the other end is rotatably mounted with the tensioning wheel (64), and the tensioning wheel (64) is located between the power pulley (45) and the driven pulley (42), and is connected to the outer edge of the transmission belt (43).

9. The lithium battery cutting machine according to claim 7, characterized in that: The utility model further comprises a handle switch assembly (7), a battery pack (8), a handle (9), a power adapter socket (10) and a placement bottom rod (91); the handle switch assembly (7) and the power adapter socket (10) are mounted on the drive motor (3) on a side away from the cutter disc assembly (5); the battery pack (8) is detachably mounted above the drive motor (3); and the handle (9) and the placement bottom rod (91) are respectively mounted above and below the drive motor (3).

10. The lithium battery cutting machine according to claim 7, characterized in that: The cutter disc assembly (5) comprises: a sawing cutter disc (51), a stopping cone seat (52), a pressing cone seat (53), a stopping shaft sleeve (54), a locking screw (55), a protective cover (56), a pressing ring (57), a pressure plate (58), a pressing screw (59) and a pressing spring (60); the shaft end of the driven pulley (42) is sleeved with two symmetrically arranged stopping cone seats (52), the pressing cone seat (53) is abutted between the two stopping cone seats (52), the sawing cutter disc (51) is pressed between the two pressing cone seats (53), the shaft hole of the sawing cutter disc (51) is abutted against the stopping shaft sleeve (54), the stopping shaft sleeve (54) is sleeved on the shaft end of the driven pulley (42), and The stopping sleeve (54) is in contact with the clamping cone seat (53) on the side close to the connecting disk (4), and is threadedly locked to the shaft end of the driven pulley (42) by the locking screw (55), and the stopping cone seat (52) is clamped and fixed; the clamping ring (57) is clamped on both sides of the shaft seat of the protective cover (56), and the clamping ring (57) is assembled between the pressure plate (58) and the connecting disk (4), and the clamping screw (59) is connected to the pressure plate (58) and is movably connected to the connecting disk (4), and the clamping spring (60) is sleeved on the clamping screw (59), and the connecting disk (4) and the pressure plate (58) are clamped and fixed by the clamping spring (60).

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