Steel rail fixing swing frame and lithium battery cutting machine

Abstract

The invention belongs to the technical field of steel rail cutting machines, and particularly relates to a steel rail fixing swing frame and a lithium battery cutting machine. Comprising a clamp and a fixing arm, the clamp is used for clamping and fixing a steel rail, and the fixing arm is arranged at the upper end of the clamp; the upper end of the fixed arm is hinged with the swinging arm and the connecting rod in parallel up and down respectively; the other end of the swing arm and the other end of the connecting rod are respectively hinged with the fixed sleeve, one end of the spring rod is hinged with the fixed sleeve, and the other end of the spring rod is hinged with the fixed arm; and the connecting shaft is rotationally installed in the fixed sleeve, and the connecting shaft is detachably connected with the external connecting sleeve in a locking mode. Through the structural design of the spring rod, the cutting force between the cutter head and the steel rail during sawing can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail cutting machines, and in particular relates to a rail fixing swing frame and a lithium battery cutting machine. Background Art

[0002] Rail cutting machines are used to cut railway rails. Since most operations are carried out outdoors, lithium batteries are mainly used as power sources. However, current portable lithium-ion cutting machines are bulky and require the cutting operator to lift the entire cutting machine before cutting the rails. During the cutting process, the cutting machine needs to be swung up and down to cut the rails. Therefore, a fixed swing frame is designed based on the above swing requirements to achieve the purpose of labor-saving swing cutting by the operator with the help of the swing frame. For example, a long swing arm lithium-ion cutting machine with patent publication number CN218799463U has a swing arm mechanism including: a locking seat, a first swing arm, a second swing arm, a limit plate, a spring pin, and a fixed sleeve. By utilizing the swing of the second swing arm, the cutting machine can achieve swing cutting of the rails.

[0003] However, the above-mentioned rail fixed swing frame can only enable the operator to swing the handheld cutting machine up and down to cut, and cannot provide swing arm support for the cutting machine that can swing independently, that is, it cannot control the cutting force between the cutting machine's blade and the rail. Summary of the Invention

[0004] The purpose of the present invention is to provide a rail fixing swing frame and a lithium battery cutting machine. The present invention can adjust the cutting force between the cutter disc and the rail during sawing through the structural design of the spring rod, and is put into use as a new swing arm support structure.

[0005] In order to solve the above technical problems, the present invention provides a rail fixing swing frame, comprising:

[0006] A clamp and a fixing arm, wherein the clamp is used to clamp and fix the rail, and the fixing arm is provided at the upper end of the clamp;

[0007] A swing arm and a connecting rod, wherein the upper end of the fixed arm is hingedly connected to the swing arm and the connecting rod in parallel with each other;

[0008] A fixed sleeve and a spring rod, wherein the swing arm and the other end of the connecting rod are respectively hinged to the fixed sleeve, one end of the spring rod is hinged to the fixed sleeve, and the other end of the spring rod is hinged to the fixed arm;

[0009] The connecting shaft is rotatably mounted in the fixed sleeve and is detachably locked to the external connecting sleeve.

[0010] Preferably, the spring rod includes: a hollow rod, a sliding rod, an adjusting spring and an adjusting sleeve; the sliding rod is slidably inserted in the hollow rod, the adjusting spring is sleeved on the hollow rod, and the adjusting sleeve is threadedly sleeved on the hollow rod, one end of the adjusting spring abuts against the adjusting sleeve, and the other end abuts against the bearing shoulder of the sliding rod.

[0011] Preferably, the hinge point between the spring rod and the fixed sleeve is on the same axis as the hinge point between the swing arm and the fixed sleeve, and the hinge point between the spring rod and the fixed arm is on the same axis as the hinge point between the connecting rod and the fixed arm, and the connecting rod and the spring rod are respectively located on the front and rear sides of the swing arm.

[0012] Preferably, the fixing sleeve includes: a mounting sleeve, connecting arm 1 and connecting arm 2; the two ends of the bottom of the mounting sleeve are integrally formed with the parallel connecting arm 1 and the connecting arm 2, and the length of the connecting arm 1 is less than the length of the connecting arm 2.

[0013] Preferably, the connecting shaft is an integrally formed arrangement of five variable-diameter shaft segments, wherein the diameter of the first shaft segment is smaller than the diameter of the second shaft segment, the diameter of the third shaft segment is larger than the diameter of the second shaft segment, and the diameters from the third shaft segment to the fifth shaft segment gradually decrease. At the same time, the three variable-diameter shaft segments are connected by a conical surface transition, and the surface of the fifth shaft segment is provided with threads.

[0014] Preferably, it also includes a bearing 1, a retaining ring 1, a locking nut and a rotating handle; three bearings 1 are installed in the mounting sleeve, one of the bearings 1 is located at one end, and the other two abutting bearings 1 are located at the other end, and are stopped and limited by the retaining ring 1, and the retaining ring 1 is embedded in the mounting sleeve, the first shaft section is rotatably installed in the mounting sleeve through the bearing 1, and is locked to the end of the first shaft section by two locking nuts to tighten the bearing 1 and the rotating handle, and the rotating handle is provided on the first shaft section.

[0015] Preferably, it also includes an end face spline tooth seat, a positioning hole and a positioning pin; the end face spline tooth seat is rotatably clamped on the second shaft segment, and the circumferential surface of the end face spline tooth seat also includes a plurality of positioning holes 1 opened circumferentially, the positioning pin 1 is vertically threaded and inserted into the boss portion at the top of the mounting sleeve, and the lower end of the positioning pin 1 is limitedly inserted into the positioning hole 1.

[0016] Preferably, the present invention further comprises an articulated shaft 1, a bearing 2, a retaining ring 2 and a locking bolt 1; the articulated shaft 1 is movably plugged into the fixed arm, and the two ends of the articulated shaft 1 respectively press the end of the spring rod and the bearing 2 through the locking bolt 1, and the articulated shaft 1 and the end shaft cavity of the connecting rod are rotatably installed through the bearing 2, and the end shaft cavity of the connecting rod is embedded with the retaining ring 2 to stop the bearing 2;

[0017] The hinged shaft 2 is rotatably mounted on the end shaft cavity of the swing arm through two of the bearings 3, and the retaining ring 3 is embedded in the end shaft cavity of the swing arm to stop and limit the bearing 3. Both ends of the hinged shaft 2 are locked to the fixed arm through the locking bolt 2, and the bearing 3 on one side is abutted with the sleeve 1, and the sleeve is set on the hinged shaft 2 and abutted with the locking bolt 2 to stop and limit the bearing 3 on one side.

[0018] Preferably, it also includes an articulated shaft three, a bearing four, a retaining ring four, a bushing two and a locking bolt three; the articulated shaft three is rotatably mounted on the end shaft cavity of the swing arm through two of the bearing fours, and the articulated shaft three is rotatably inserted into the fixed sleeve, the retaining ring four is embedded in the end shaft cavity of the swing arm to stop and limit the bearing four, and the two ends of the articulated shaft three are respectively pressed against the ends of the bushing two and the spring rod by the locking bolt three, and the bearing four on one side is abutted against the bushing two, and the bushing two is sleeved on the articulated shaft two to stop and limit the bearing four on one side;

[0019] It also includes an articulated shaft four, a bearing five, a retaining ring five and a locking bolt four; the articulated shaft four is movably inserted into the fixed sleeve, the end of the articulated shaft four locks the bearing five through the locking bolt four, the bearing five is rotatably installed between the articulated shaft four and the end shaft cavity of the connecting rod, and the retaining ring five is embedded in the end shaft cavity of the connecting rod to stop and limit the bearing five.

[0020] Preferably, it also includes a second positioning hole and a second positioning pin; the second positioning pin is threadedly inserted into the end boss of the swing arm, and the two second positioning holes are symmetrically opened on the top boss of the fixed arm, and the end of the second positioning pin is limitedly inserted into the second positioning hole.

[0021] The present invention also provides a lithium battery cutting machine, comprising the rail fixing swing frame as described above.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention utilizes the aforementioned fixed arm, swing arm, connecting rod, and fixed sleeve to form a parallelogram structure, enhancing the swing arm's support stability during the upward and downward swing sawing operation of the cutter. The provision of a spring rod ensures that a constant cutting force is consistently maintained between the cutterhead and the rail during sawing. Furthermore, by rotating the adjustment sleeve, the adjustment sleeve moves axially relative to the hollow rod, thereby adjusting the preload of the adjustment spring to vary the cutting force between the cutterhead and the rail during sawing.

[0024] 2. The present invention uses the three shaft sections with gradually decreasing diameters connected by the above-mentioned conical surface transition to make the connecting shaft and the connecting sleeve fit more tightly, preventing axial movement and thus enhancing the locking effect.

[0025] 3. The present invention first pre-aligns the end spline teeth and the end spline adapter by snapping them together, then rotates the connecting shaft to lock and secure it with the connecting sleeve using its threaded shaft section. Furthermore, by adjusting the circumferential angle of the end spline adapter, the end spline teeth can be rotated to the required angle during alignment, thereby adjusting the deflection angle of the cutter head during assembly with the connecting sleeve. By adjusting the appropriate cutter head angle, subsequent swing sawing of the rail is facilitated.

[0026] 4. The present invention uses a bearing structure arranged at three asymmetrical points to balance the load force of the cutting machine connected to the connecting shaft through the connecting sleeve, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of a rail fixing swing frame provided by the present invention.

[0028] Figure 2 It is a rear view of a rail fixing swing frame provided by the present invention.

[0029] Figure 3 It is a cross-sectional view of the fixing sleeve provided by the present invention.

[0030] Figure 4 It is an enlarged view of the end face spline gear adapter provided by the present invention.

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

[0032] Figure 6 It is a structural diagram of the spring rod provided by the present invention.

[0033] Figure 7 It is a cross-sectional view of the spring rod provided by the present invention.

[0034] Figure 8 It is a schematic diagram of a rail fixing swing frame provided by the present invention operating on one side of the rail.

[0035] Figure 9 It is a schematic diagram of a rail fixing swing frame provided by the present invention operating on the other side of the rail.

[0036] In the figure: 1-clamp, 2-fixed arm, 3-swing arm, 4-connecting rod, 5-fixed sleeve, 51-installation sleeve, 52-connecting arm 1, 53-connecting arm 2, 54-bearing 1, 55-circlip 1, 56-locking nut, 57-rotating handle, 6-spring rod, 61-hollow rod, 62-sliding rod, 63-adjusting spring, 64-adjusting sleeve, 7-connecting shaft, 8-end face spline gear seat, 81-locating hole 1, 82-locating pin 1, 9-articular shaft 1, 91 -Bearing 2, 92-Circlip circlip 2, 93-Locking bolt 1, 10-Articulated shaft 2, 101-Bearing 3, 102-Circlip circlip 3, 103-Sleeve 1, 104-Locking bolt 2, 11-Articulated shaft 3, 110-Bearing 4, 111-Circlip circlip 4, 112-Sleeve 2, 113-Locking bolt 3, 12-Articulated shaft 4, 121-Bearing 5, 122-Circlip circlip 5, 123-Locking bolt 4, 13-Location hole 2, 14-Location pin 2. DETAILED DESCRIPTION

[0037] 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.

[0038] like Figures 1 to 9 As shown, an embodiment of the present invention specifically provides a rail fixing swing frame, comprising:

[0039] The clamp 1 and the fixed arm 2 are used to clamp and fix the rail. The upper end of the clamp 1 is provided with a fixed arm 2.

[0040] The swing arm 3 and the connecting rod 4 are respectively hinged with the swing arm 3 and the connecting rod 4 at the upper end of the fixed arm 2 in parallel with each other;

[0041] The fixed sleeve 5 and the spring rod 6, the other ends of the swing arm 3 and the connecting rod 4 are respectively hinged to the fixed sleeve 5, one end of the spring rod 6 is hinged to the fixed sleeve 5, and the other end of the spring rod 6 is hinged to the fixed arm 2;

[0042] The connecting shaft 7 is rotatably mounted in the fixed sleeve 5 , and the connecting shaft 7 is detachably locked to the external connecting sleeve.

[0043] The spring rod 6 comprises a hollow rod 61, a sliding rod 62, an adjustment spring 63, and an adjustment sleeve 64. The sliding rod 62 is slidably inserted into the hollow rod 61, and the adjustment spring 63 is sleeved on the hollow rod 61. The adjustment sleeve 64 is also threadedly mounted on the hollow rod 61. One end of the adjustment spring 63 abuts the adjustment sleeve 64, and the other end abuts the shoulder of the sliding rod 62. The fixed arm 2, swing arm 3, connecting rod 4, and fixed sleeve 5 form a parallelogram structure, enhancing the stability of the swing arm support during the upward and downward swing sawing of the cutting machine. The arrangement of the spring rod 6 ensures that a certain cutting force is consistently maintained between the cutterhead and the rail during sawing. Furthermore, by rotating the adjustment sleeve 64, the adjustment sleeve 64 moves axially relative to the hollow rod 61, thereby adjusting the preload of the adjustment spring 63 and varying the cutting force between the cutterhead and the rail during sawing.

[0044] The hinge point between the spring rod 6 and the fixed sleeve 5 is coaxial with the hinge point between the swing arm 3 and the fixed sleeve 5. The hinge point between the spring rod 6 and the fixed arm 2 is coaxial with the hinge point between the connecting rod 4 and the fixed arm 2. The connecting rod 4 and the spring rod 6 are located on the front and rear sides of the swing arm 3, respectively. The fixed sleeve 5 comprises a mounting sleeve 51, a connecting arm 1 52, and a connecting arm 2 53. The bottom ends of the mounting sleeve 51 are integrally connected to parallel connecting arms 1 52 and 2 53, with connecting arm 1 52 being shorter than connecting arm 2 53. This design ensures that the rail fixing swing frame can be flipped directly from one side of the rail to the other for rail cutting without affecting its functionality.

[0045] The connecting shaft 7 is an integrally formed, five-section, variable-diameter shaft. The diameter of the first section is smaller than that of the second section, the diameter of the third section is larger than that of the second section, and the diameters gradually decrease from the third section to the fifth section. These three variable-diameter sections are connected by a conical transition, and the fifth section is threaded. When the connecting shaft 7 and the connecting sleeve are threadedly locked, the three gradually decreasing diameter sections connected by the conical transition ensure a tighter fit between the connecting shaft 7 and the connecting sleeve, preventing axial movement and enhancing the locking effect.

[0046] The mounting sleeve 51 further includes a bearing 54, a retaining ring 55, a locking nut 56, and a rotating handle 57. Three bearings 54 are mounted within the mounting sleeve 51, one of which is located at one end, and two abutting bearings 54 at the other end. These bearings 54 are retained in place by retaining rings 55, which are embedded within the mounting sleeve 51. The first shaft section is rotatably mounted within the mounting sleeve 51 via the bearing 54. The retaining ring 55 is locked to the ends of the first shaft section by two locking nuts 56, thereby compressing the bearing 54 and the rotating handle 57. The rotating handle 57 is sleeved onto the first shaft section. The cooperation of the retaining ring 55 and the locking nut 56 allows the bearing 54 to be retained in place, preventing axial movement and enhancing the stability of the connecting shaft 7 during rotation. Furthermore, the three asymmetrically positioned bearings 54 balance the load forces applied by the cutting machine to the connecting shaft 7 via the connecting sleeve, extending its service life.

[0047] It also includes an end face spline tooth seat 8, a positioning hole 81 and a positioning pin 82; the end face spline tooth seat 8 is rotatably connected to the second shaft segment, and the circumferential surface of the end face spline tooth seat 8 also includes a plurality of positioning holes 81 opened circumferentially, and the positioning pin 82 is vertically threaded and inserted into the boss portion at the top of the mounting sleeve 51, and the lower end of the positioning pin 82 is limitedly inserted into the positioning hole 81. First, the end face spline teeth and the end face spline tooth seat 8 are pre-connected by clamping, and then the connecting shaft 7 is rotated and locked with the connecting sleeve using its threaded shaft section. In addition, by adjusting the circumferential angle of the above-mentioned end face spline tooth seat 8, the end face spline teeth can be rotated at the required angle when connecting, that is, the deflection angle of the cutter head of the cutting machine when assembled with the connecting sleeve can be adjusted. By adjusting the appropriate cutter head angle, the subsequent swing sawing action of the rail is facilitated.

[0048] It also includes an articulated shaft 9, a second bearing 91, a second retaining ring 92 and a locking bolt 93; the articulated shaft 9 is movably inserted into the fixed arm 2, and the two ends of the articulated shaft 9 respectively press the end of the spring rod 6 and the second bearing 91 through the locking bolt 93, and the articulated shaft 9 and the end shaft cavity of the connecting rod 4 are rotatably installed through the second bearing 91, and the end shaft cavity of the connecting rod 4 is embedded with a second retaining ring 92 to stop and limit the second bearing 91; the stability of the articulated shaft 9 when assembled with the connecting rod 4, the spring rod 6 and the fixed arm 2 can be achieved.

[0049] It also includes an articulated shaft 10, a bearing 101, a retaining ring 102, a sleeve 103 and a locking bolt 104; the articulated shaft 10 is rotatably installed on the end shaft cavity of the swing arm 3 through two bearings 101, and the retaining ring 102 is embedded in the end shaft cavity of the swing arm 3 to stop and limit the bearing 101. The two ends of the articulated shaft 10 are locked to the fixed arm 2 through the locking bolt 104, and the bearing 101 on one side is abutted with a sleeve 103. The sleeve 103 is sleeved on the articulated shaft 10 and abutted with the locking bolt 104 to stop and limit the bearing 101 on one side; the stability of the articulated shaft 10 during assembly with the swing arm 3 and the fixed arm 2 can be achieved.

[0050] It also includes an articulated shaft three 11, a bearing four 110, a retaining ring four 111, a sleeve two 112 and a locking bolt three 113; the articulated shaft three 11 is rotatably installed on the end shaft cavity of the swing arm 3 through two bearing four 110, and the articulated shaft three 111 can be rotatably inserted into the fixed sleeve 5, and the retaining ring four 111 is embedded in the end shaft cavity of the swing arm 3 to stop and limit the bearing four 110. The two ends of the articulated shaft three 11 are respectively pressed by the locking bolt three 113 to the end of the sleeve two 112 and the spring rod 6, and the bearing four 110 on one side is abutted with the sleeve two 112, and the sleeve two 112 is sleeved on the articulated shaft two 10 to stop and limit the bearing four 110 on one side; the stability of the articulated shaft three 11 and the swing arm 3 and the fixed sleeve 5 during assembly can be achieved.

[0051] It also includes an articulated shaft four 12, a bearing five 121, a retaining ring five 122 and a locking bolt four 123; the articulated shaft four 12 is movably inserted into the fixed sleeve 5, and the end of the articulated shaft four 12 locks the bearing five 121 through the locking bolt four 123. The bearing five 121 is rotatably installed between the articulated shaft four 12 and the end shaft cavity of the connecting rod 4, and the retaining ring five 122 is embedded in the end shaft cavity of the connecting rod 4 to stop and limit the bearing five 121; the stability of the articulated shaft four 12, the connecting rod 4 and the fixed sleeve 5 during assembly can be achieved.

[0052] It also includes a second positioning hole 13 and a second positioning pin 14; the second positioning pin 14 is threadedly inserted into the end boss of the swing arm 3, and the two second positioning holes 13 are symmetrically opened on the top boss of the fixed arm 2, and the end of the second positioning pin 14 and the second positioning hole 13 are limitedly inserted. When the locking pin and the locking hole are not separated, the swing arm 3 can be provided with a stop and limit function, which is convenient for quickly completing the docking and locking function of the connecting shaft 7 and the connecting sleeve.

[0053] The present invention also provides a lithium battery cutting machine, comprising a rail fixed swing frame as described above, to provide swing arm support for the cutting machine capable of automatic swing sawing.

[0054] 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 rail fixed swing frame, characterized in that: include: A clamp (1) and a fixing arm (2), wherein the clamp (1) is used to clamp and fix the rail, and the fixing arm (2) is provided at the upper end of the clamp (1); A swing arm (3) and a connecting rod (4), wherein the upper end of the fixed arm (2) is respectively hingedly connected to the swing arm (3) and the connecting rod (4) in parallel with each other; A fixed sleeve (5) and a spring rod (6), the other ends of the swing arm (3) and the connecting rod (4) are respectively hinged to the fixed sleeve (5), one end of the spring rod (6) is hinged to the fixed sleeve (5), and the other end of the spring rod (6) is hinged to the fixed arm (2); A connecting shaft (7) is rotatably mounted in the fixed sleeve (5), and the connecting shaft (7) is detachably locked to the external connecting sleeve.

2. A rail fixing swing frame as claimed in claim 7, characterized in that: The spring rod (6) comprises: a hollow rod (61), a slide rod (62), an adjustment spring (63) and an adjustment sleeve (64); the slide rod (62) is slidably inserted into the hollow rod (61), the adjustment spring (63) is sleeved on the hollow rod (61), and the adjustment sleeve (64) is threadedly sleeved on the hollow rod (61); one end of the adjustment spring (63) abuts against the adjustment sleeve (64), and the other end abuts against the shoulder of the slide rod (62).

3. A rail fixing swing frame as claimed in claim 1, characterized in that: The hinge point between the spring rod (6) and the fixed sleeve (5) is on the same axis as the hinge point between the swing arm (3) and the fixed sleeve (5); the hinge point between the spring rod (6) and the fixed arm (2) is on the same axis as the hinge point between the connecting rod (4) and the fixed arm (2); and the connecting rod (4) and the spring rod (6) are respectively located on the front and rear sides of the swing arm (3).

4. A rail fixing swing frame as claimed in claim 1, characterized in that: The fixing sleeve (5) comprises: a mounting sleeve (51), a connecting arm 1 (52) and a connecting arm 2 (53); the two ends of the bottom of the mounting sleeve (51) are integrally formed with the connecting arm 1 (52) and the connecting arm 2 (53) which are parallel to each other, and the length of the connecting arm 1 (52) is smaller than the length of the connecting arm 2 (53).

5. A rail fixing swing frame as claimed in claim 4, characterized in that: The connecting shaft (7) is an integrally formed arrangement of five variable diameter shaft sections, wherein the diameter of the first shaft section is smaller than that of the second shaft section, the diameter of the third shaft section is larger than that of the second shaft section, and the diameters of the third shaft section to the fifth shaft section gradually decrease. The three variable diameter shaft sections are connected by a conical surface transition, and the surface of the fifth shaft section is provided with a thread.

6. A rail fixing swing frame as claimed in claim 5, characterized in that: It also includes a bearing (54), a retaining ring (55), a locking nut (56) and a rotating handle (57); three bearings (54) are installed in the installation sleeve (51), one of the bearings (54) is located at one end, and the other two bearings (54) that are in contact with each other are located at the other end, and are stopped and limited by the retaining ring (55), and the retaining ring (55) is embedded in the installation sleeve (51), the first shaft section is rotatably installed in the installation sleeve (51) through the bearing (54), and is locked to the end of the first shaft section by two locking nuts (56) to compress the bearing (54) and the rotating handle (57), and the rotating handle (57) is sleeved on the first shaft section.

7. The rail fixing swing frame according to claim 5, characterized in that: It also includes an end face spline tooth seat (8), a positioning hole (81) and a positioning pin (82); the end face spline tooth seat (8) is rotatably connected to the second shaft segment, and the circumferential surface of the end face spline tooth seat (8) also includes a plurality of positioning holes (81) opened circumferentially, and the positioning pin (82) is vertically threaded and inserted into the boss portion at the top of the mounting sleeve (51), and the lower end of the positioning pin (82) is limitedly inserted into the positioning hole (81).

8. The rail fixing swing frame according to claim 3, characterized in that: It also includes an articulated shaft (9), a second bearing (91), a second retaining ring (92) and a locking bolt (93); the articulated shaft (9) is movably inserted into the fixed arm (2), and the two ends of the articulated shaft (9) respectively press the end of the spring rod (6) and the second bearing (91) through the first locking bolt (93), and the articulated shaft (9) and the end shaft cavity of the connecting rod (4) are rotatably installed through the second bearing (91), and the second retaining ring (92) is embedded in the end shaft cavity of the connecting rod (4) to stop and limit the second bearing (91); It also includes an articulated shaft 2 (10), a bearing 3 (101), a retaining ring 3 (102), a sleeve 1 (103) and a locking bolt 2 (104); the articulated shaft 2 (10) is rotatably mounted on the end shaft cavity of the swing arm (3) through two bearings 3 (101), the retaining ring 3 (102) is embedded in the end shaft cavity of the swing arm (3) to stop and limit the bearing 3 (101), and both ends of the articulated shaft 2 (10) are locked on the fixed arm (2) through the locking bolt 2 (104), and the bearing 3 (101) on one side is abutted with the sleeve 1 (103), and the sleeve 1 (103) is sleeved on the articulated shaft 2 (10) and abutted with the locking bolt 2 (104) to stop and limit the bearing 3 (101) on one side.

9. The rail fixing swing frame according to claim 3, characterized in that: It also includes an articulated shaft three (11), a bearing four (110), a retaining ring four (111), a shaft sleeve two (112) and a locking bolt three (113); the articulated shaft three (11) is rotatably mounted on the end shaft cavity of the swing arm (3) through two of the bearing four (110), and the articulated shaft three (11) can be rotatably inserted into the fixed sleeve (5), and the retaining ring four (111) is embedded in the end of the swing arm (3). On the shaft cavity, the bearing four (110) is stopped and limited, and the two ends of the hinge shaft three (11) respectively press the ends of the shaft sleeve two (112) and the spring rod (6) through the locking bolt three (113), and the bearing four (110) on one side is abutted with the shaft sleeve two (112), and the shaft sleeve two (112) is sleeved on the hinge shaft two (10) to stop and limit the bearing four (110) on one side; It also includes an articulated shaft four (12), a bearing five (121), a retaining ring five (122) and a locking bolt four (123); the articulated shaft four (12) is movably inserted into the fixed sleeve (5), the end of the articulated shaft four (12) locks the bearing five (121) through the locking bolt four (123), the bearing five (121) is rotatably installed between the articulated shaft four (12) and the end shaft cavity of the connecting rod (4), and the retaining ring five (122) is embedded in the end shaft cavity of the connecting rod (4) to stop and limit the bearing five (121); It also includes a second positioning hole (13) and a second positioning pin (14); the second positioning pin (14) is threadedly inserted into the end boss of the swing arm (3), and the two second positioning holes (13) are symmetrically opened on the top boss of the fixed arm (2), and the end of the second positioning pin (14) is limitedly inserted into the second positioning hole (13).

10. A lithium battery cutting machine, characterized in that: It comprises a rail fixing swing frame as described in any one of claims 1 to 9.

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