Lead-acid storage battery for electric tractor

Abstract

The invention discloses a lead-acid storage battery for an electric tractor, and belongs to the technical field of lead-acid storage batteries, the lead-acid storage battery comprises a shell, a mounting plate is placed in the shell, a clamping mechanism is mounted on the mounting plate, and a first mounting groove and a second mounting groove are formed in the top of the mounting plate; the clamping mechanism comprises a first two-way screw rotationally mounted in the first mounting groove and a second two-way screw rotationally mounted in the second mounting groove; the first two-way screw rod penetrates to the outer side of the mounting plate, a worm is fixedly connected to the first two-way screw rod, a worm gear meshed with the worm is fixedly connected to the second two-way screw rod, the two ends of the first two-way screw rod are both in threaded connection with first mounting blocks, and the two ends of the second two-way screw rod are both in threaded connection with second mounting blocks; the tops of the two first mounting blocks are fixedly connected with first clamping plates, and the tops of the two second mounting blocks are fixedly connected with second clamping plates. The problem that the lead-acid storage battery is easily damaged due to shaking is solved.

Description

Technical Field

[0001] The present application relates to the technical field of lead-acid batteries, and in particular to a lead-acid battery for an electric tractor. Background Art

[0002] The electrodes of lead-acid batteries are mainly made of lead and its oxides, and the electrolyte is mainly sulfuric acid solution. Lead-acid batteries are widely used in various fields such as automobiles, electricity, power, and communications due to their low price, high safety, and mature production technology. Domestic elderly scooters, tractors, sightseeing vehicles, electric tricycles, etc. mostly use power lead-acid batteries.

[0003] Related technologies may refer to the Chinese patent with announcement number CN117895162A, which discloses a lead-acid battery with an anti-leakage structure, including a shell, a top cover is arranged on the top of the shell, a mounting plate is arranged in the inner cavity of the shell, a mounting groove is opened on the top of the mounting plate, a lead-acid battery body is installed in the mounting groove, two terminals are installed on the top of the lead-acid battery body, two buffer assemblies are arranged between the mounting plate and the inner cavity of the shell on both sides, a number of shock absorbers are installed between the mounting plate and the bottom of the inner cavity of the shell, anti-collision corners are installed at the four corners of the shell, heat dissipation holes are opened on both sides of the shell, and drying assemblies corresponding to the positions of the heat dissipation holes are arranged on both sides of the inner cavity of the shell.

[0004] However, during the use of the tractor, the tractor is prone to cause the lead-acid battery to shake. The lead-acid battery is only limited by the installation groove, and the lead-acid battery is prone to collide with the inner wall of the shell, causing the lead-acid battery to be easily damaged by the shaking. Summary of the invention

[0005] In order to solve the problem that lead-acid batteries are easily damaged by shaking, the present application provides a lead-acid battery for an electric tractor.

[0006] The lead-acid battery for an electric tractor provided in this application adopts the following technical solution: A lead-acid battery for an electric tractor comprises a housing, a mounting plate is placed in the housing, a clamping mechanism is mounted on the mounting plate, a first mounting groove and a second mounting groove are formed on the top of the mounting plate, the extension direction of the first mounting groove is perpendicular to the extension direction of the second mounting groove, and the clamping mechanism comprises a first bidirectional screw rotatably mounted in the first mounting groove and a second bidirectional screw rotatably mounted in the second mounting groove; The first bidirectional screw is passed through the outside of the mounting plate, a worm is fixedly connected to the first bidirectional screw, a worm wheel meshing with the worm is fixedly connected to the second bidirectional screw, both ends of the first bidirectional screw are threadedly connected to the first mounting blocks, both ends of the second bidirectional screw are threadedly connected to the second mounting blocks, the tops of the two first mounting blocks are fixedly connected to the first clamping plate, and the tops of the two second mounting blocks are fixedly connected to the second clamping plate.

[0007] Preferably, a buffer airbag is fixedly connected to the inner bottom surface of the shell and arranged below the mounting plate, the mounting plate is in contact with the buffer airbag, and a guide rod is fixedly connected to the inner bottom surface of the shell and the guide rod is inserted into the mounting plate.

[0008] Preferably, a clamping mechanism is provided in the shell, and the clamping mechanism includes a ventilation tube fixedly connected to the inner bottom surface of the shell and an annular tube fixedly connected to the mounting plate, one end of the ventilation tube is connected to the buffer airbag through a first branch tube, and the other end of the ventilation tube is connected to the annular tube through a second branch tube, the two first clamping plates are fixedly connected with a first clamping airbag, the two second clamping airbags are fixedly connected with a second clamping airbag, the two first clamping airbags and the two second clamping airbags are connected to the annular tube through a third branch tube, and a blocking mechanism for blocking the ventilation tube is installed in the shell.

[0009] Preferably, a closing opening is provided on the side wall of the ventilation pipe, and the sealing mechanism includes a sealing plate slidably placed in the closing opening, and the sealing plate can seal the ventilation pipe; a battery and an electromagnet are fixedly connected to the inner bottom surface of the shell, and the battery and the electromagnet are electrically connected through a wire; an iron sheet used in conjunction with the electromagnet is fixedly connected to the sealing plate, and a sealing spring is fixedly connected to the sealing plate, and one end of the sealing spring away from the sealing plate is fixedly connected to the inner wall of the ventilation pipe; switch components are installed on both the first clamping plate and the second clamping plate, and both of the switch components can control the battery to power on and off the electromagnet.

[0010] Preferably, a switch slot is provided on the side wall of the first clamping plate, and the switch component includes a switch spring fixedly connected to the inner wall of the switch slot and a switch block placed in the switch slot, the switch spring is fixedly connected to the switch block, the switch block can contact the lead-acid battery, the switch block is provided with a switch movable plate electrically connected to the battery through a wire, the inner wall of the switch slot is provided with a switch stator electrically connected to the electromagnet through a wire, and the switch movable plate is used in conjunction with the switch stator.

[0011] Preferably, the two first clamping plates and the two second clamping plates are both equipped with an extrusion mechanism, and the extrusion mechanism includes a fixed plate fixedly connected to the first clamping plate, an extrusion shaft rotatably installed on the fixed plate, and an extrusion plate fixedly connected to the extrusion shaft, and the extrusion plate can contact the first clamping airbag, a ventilation hole is opened on the side wall of the sealing plate, a one-way valve is installed in the ventilation hole, and a transmission mechanism for driving the extrusion shaft to rotate is installed on the mounting plate.

[0012] Preferably, the transmission mechanism comprises a support rod fixedly connected to the mounting plate and a rack fixedly connected to the support rod, and a gear capable of meshing with the rack is fixedly connected to the extrusion shaft.

[0013] Preferably, an extrusion airbag is fixedly connected to the side wall of the extrusion plate, and the extrusion airbag is connected to the third branch pipe through the fourth branch pipe.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. The first bidirectional screw is rotated, and the first bidirectional screw drives the two first mounting blocks to approach each other, and the two first mounting blocks respectively drive the first clamping plate to move, so as to fix the lead-acid battery. At the same time, the first bidirectional screw drives the second bidirectional screw to rotate through the worm and the worm gear, and the second bidirectional screw drives the two second mounting blocks to approach each other, and the two second mounting blocks respectively drive the second clamping plate to move, so as to further fix the lead-acid battery, thereby solving the problem that the lead-acid battery is easily damaged by shaking; 2. When the lead-acid battery is placed on the mounting plate, the buffer airbag can buffer the lead-acid battery and offset part of the force when the lead-acid battery shakes; 3. When the size of the lead-acid battery becomes smaller, the two first clamping plates can contact the lead-acid battery, and the two second clamping plates cannot contact the lead-acid battery. At this time, the blocking mechanism is opened, and the buffer airbag is affected by the gravity of the lead-acid battery, and the gas is discharged to the ventilation pipe through the first branch pipe, and flows to the first clamping airbag and the second clamping airbag through the second branch pipe, the annular pipe, and the third branch pipe, so that the two first clamping airbags and the two second clamping airbags are respectively in contact with the lead-acid battery, further fixing the lead-acid battery, thereby further solving the problem that the lead-acid battery is easily damaged by shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a lead-acid battery for an electric tractor according to an embodiment of the present application.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of an embodiment of the present application.

[0018] Figure 4 It is a schematic structural diagram of the clamping mechanism of an embodiment of the present application.

[0019] Figure 5 It is a structural schematic diagram of the blocking mechanism of an embodiment of the present application.

[0020] Figure 6 It is a schematic diagram of the structure of the extrusion mechanism of an embodiment of the present application.

[0021] Description of reference numerals: 1. Shell; 11. Mounting plate; 111. First mounting groove; 112. Second mounting groove; 12. Buffer airbag; 13. Guide rod; 14. Cover plate; 15. Sliding hole; 2. Clamping mechanism; 21. First bidirectional screw; 211. Worm; 22. Second bidirectional screw; 221. Worm gear; 23. First mounting block; 24. Second mounting block; 25. First clamping plate; 26. Second clamping plate; 3. Clamping mechanism; 31. Ventilation pipe; 311. Closing port; 32. Annular pipe; 33. First branch pipe; 34. Second branch pipe; 35. First clamping airbag; 36. Second clamping airbag; 37. Third branch pipe; 4. Sealing mechanism; 41. Sealing plate; 411. Ventilation hole; 412. One-way valve; 42. Battery; 43. Electromagnet; 44. Iron sheet; 45. Sealing spring; 5. Switch component; 51. Switch slot; 52. Switch spring; 53. Switch block; 54. Switch moving plate; 55. Switch fixed plate; 6. Extrusion mechanism; 61. Fixed plate; 62. Extrusion shaft; 63. Extrusion plate; 64. Extrusion airbag; 65. Fourth branch pipe; 7. Transmission mechanism; 71. Support rod; 72. Rack; 73. Gear. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-6 This application is described in further detail.

[0023] The present application embodiment discloses a lead-acid battery for an electric tractor. Figure 1 and Figure 2A lead-acid battery for an electric tractor includes a shell 1, a mounting plate 11 is horizontally placed in the shell 1, the lead-acid battery is placed on the mounting plate 11, a cover plate 14 is installed on the top of the shell 1, and the shell 1 can be closed. A buffer airbag 12 arranged below the mounting plate 11 is fixedly connected to the inner bottom surface of the shell 1, and the mounting plate 11 is in contact with the buffer airbag 12. When the lead-acid battery is placed on the mounting plate 11, the buffer airbag 12 can buffer the lead-acid battery and offset part of the force during the shaking of the lead-acid battery. A guide rod 13 is fixedly connected to the inner bottom surface of the shell 1, and the guide rod 13 is penetrated into the mounting plate 11 to guide the mounting plate 11.

[0024] Reference Figure 2 and Figure 3 A clamping mechanism 2 is installed on the mounting plate 11. A first mounting groove 111 and a second mounting groove 112 are horizontally opened on the top of the mounting plate 11. The extension direction of the first mounting groove 111 is perpendicular to the extension direction of the second mounting groove 112. The clamping mechanism 2 includes a first bidirectional screw 21 and a second bidirectional screw 22. The first bidirectional screw 21 is rotatably installed in the first mounting groove 111, and the second bidirectional screw 22 is rotatably installed in the second mounting groove 112. The first bidirectional screw 21 is penetrated to the outside of the mounting plate 11. A sliding hole 15 is opened on the side wall of the shell 1. The first bidirectional screw 21 passes through the sliding hole 15 and extends to the outside of the shell 1. The first bidirectional screw 21 is fixedly connected with The worm 211 and the second bidirectional screw 22 are fixedly connected with a worm wheel 221 meshing with the worm 211; both ends of the first bidirectional screw 21 are threadedly connected with the first mounting blocks 23, and the side walls of the first mounting blocks 23 are in contact with the inner walls of the first mounting groove 111; both ends of the second bidirectional screw 22 are threadedly connected with the second mounting blocks 24, and the side walls of the second mounting blocks 24 are in contact with the inner walls of the second mounting groove 112; the tops of the two first mounting blocks 23 are fixedly connected with the vertically arranged first clamping plates 25; the tops of the two second mounting blocks 24 are fixedly connected with the vertically arranged second clamping plates 26; the lead-acid battery is placed between the two first clamping plates 25 and the two second clamping plates 26.

[0025] The first bidirectional screw 21 is rotated, and the first bidirectional screw 21 drives the two first mounting blocks 23 to approach each other, and the two first mounting blocks 23 respectively drive the first clamping plate 25 to move, thereby fixing the lead-acid battery. At the same time, the first bidirectional screw 21 drives the second bidirectional screw 22 to rotate through the worm 211 and the worm gear 221, and the second bidirectional screw 22 drives the two second mounting blocks 24 to approach each other, and the two second mounting blocks 24 respectively drive the second clamping plate 26 to move, thereby further fixing the lead-acid battery and solving the problem that the lead-acid battery is easily damaged by shaking.

[0026] Reference Figure 3 and Figure 4 A clamping mechanism 3 is provided in the shell 1, and the clamping mechanism 3 includes a ventilation tube 31 and an annular tube 32. The ventilation tube 31 is fixedly connected to the inner bottom surface of the shell 1 and is vertically arranged. The annular tube 32 is fixedly connected to the outer peripheral surface of the mounting plate 11. One end of the ventilation tube 31 is connected to the buffer airbag 12 through a first branch pipe 33, and the other end of the ventilation tube 31 is connected to the annular tube 32 through a second branch pipe 34. The first clamping airbags 35 are fixedly connected to the opposite side walls of the two first clamping plates 25, and the second clamping airbags 36 are fixedly connected to the opposite side walls of the two second clamping plates 26. The two first clamping airbags 35 and the two second clamping airbags 36 are connected to the annular tube 32 through a third branch pipe 37. A blocking mechanism 4 is installed in the shell 1, and the blocking mechanism 4 can block the ventilation tube 31.

[0027] When the size of the installed lead-acid battery becomes smaller, the two first clamping plates 25 can contact the lead-acid battery, and the two second clamping plates 26 cannot contact the lead-acid battery. At this time, the blocking mechanism 4 is opened, and the buffer airbag 12 is affected by the gravity of the lead-acid battery to discharge the gas to the ventilation pipe 31 through the first branch pipe 33, and flows to the first clamping airbag 35 and the second clamping airbag 36 through the second branch pipe 34, the annular pipe 32, and the third branch pipe 37, until the two first clamping airbags 35 and the two second clamping airbags 36 are respectively in full contact with the lead-acid battery, thereby further fixing the lead-acid battery, thereby further solving the problem that the lead-acid battery is easily damaged by shaking.

[0028] Reference Figures 3 to 5 A closed opening 311 is provided on the side wall of the ventilation pipe 31, and the blocking mechanism 4 includes a blocking plate 41, which is slidably placed in the closed opening 311, and the blocking plate 41 can block the ventilation pipe 31. A battery 42 and an electromagnet 43 are fixedly connected to the inner bottom surface of the shell 1, and the battery 42 and the electromagnet 43 are electrically connected through a wire. An iron sheet 44 used in conjunction with the electromagnet 43 is fixedly connected to the blocking plate 41, and a blocking spring 45 is fixedly connected to the blocking plate 41. One end of the blocking spring 45 away from the blocking plate 41 is fixedly connected to the inner wall of the ventilation pipe 31, and a switch component 5 is installed on the first clamping plate 25 and the second clamping plate 26, and the two switch components 5 can control the battery 42 to power on and off the electromagnet 43.

[0029] When the first clamping plate 25 contacts the lead-acid battery, the switch component 5 is started, and the switch component 5 controls the battery 42 to energize the electromagnet 43. The electromagnet 43 attracts the iron sheet 44, and the iron sheet 44 drives the blocking plate 41 to move, compresses the blocking spring 45, and the ventilation pipe 31 is opened, so that the gas can flow, which is convenient for the staff to operate.

[0030] Reference Figures 3 to 6Taking the switch component 5 installed on the first clamping plate 25 as an example, a switch slot 51 is provided on the side wall of the first clamping plate 25, and the switch component 5 includes a switch spring 52 and a switch block 53. The switch spring 52 is fixedly connected to the inner wall of the switch slot 51, and the switch block 53 is placed in the switch slot 51. The switch spring 52 is fixedly connected to the switch block 53, and the switch block 53 can contact the lead-acid battery. The switch block 53 is provided with a switch moving piece 54 electrically connected to the battery 42 through a wire, and the inner wall of the switch slot 51 is provided with a switch moving piece 54 electrically connected to the electromagnet 43 The switch stator 55 is electrically connected by a wire, and the switch movable plate 54 is used in conjunction with the switch stator 55; when the first clamp plate 25 moves toward the lead-acid battery, the first clamp plate 25 drives the switch block 53 to move. When the switch block 53 contacts the lead-acid battery, the switch block 53 and the first clamp plate 25 slide relative to each other, compressing the switch spring 52. When the switch movable plate 54 contacts the switch stator 55, the first clamp plate 25 contacts the lead-acid battery, and at the same time, the battery 42 energizes the electromagnet 43, thereby opening the ventilation pipe 31.

[0031] Reference Figures 3 to 6 The two first clamping plates 25 and the two second clamping plates 26 are both equipped with a squeezing mechanism 6, which includes a fixed plate 61, a squeezing shaft 62 and a squeezing plate 63. The fixed plate 61 is fixedly connected to the top of the first clamping plate 25, and the squeezing shaft 62 is rotatably mounted on the fixed plate 61. The squeezing plate 63 is fixedly connected to the squeezing shaft 62, and the squeezing plate 63 can contact the first clamping airbag 35. A ventilation hole 411 is opened on the side wall of the blocking plate 41, and a one-way valve 412 is installed in the ventilation hole 411. A transmission mechanism for driving the squeezing shaft 62 to rotate is installed on the mounting plate 11. 7; When the lead-acid battery needs to be replaced, the first bidirectional screw 21 is rotated, the two first clamping plates 25 and the two second clamping plates 26 are moved away from each other, the sealing plate 41 closes the ventilation pipe 31, and then the transmission mechanism 7 is started, the transmission mechanism 7 drives the extrusion shaft 62 to rotate, the extrusion shaft 62 drives the extrusion plate 63 to rotate, the extrusion plate 63 squeezes the first clamping airbag 35, so that the gas in the first clamping airbag 35 can flow back into the buffer airbag 12 through the third branch pipe 37, and the one-way valve 412 can be opened at this time, which is convenient for continued use next time.

[0032] Reference Figure 6The transmission mechanism 7 includes a support rod 71 and a rack 72. The support rod 71 is fixedly connected to the top of the mounting plate 11, and the rack 72 is fixedly connected to the top of the support rod 71. A gear 73 capable of meshing with the rack 72 is fixedly connected to the extrusion shaft 62; in the process of the first clamping plate 25 moving toward the side away from the lead-acid battery, the first clamping plate 25 drives the extrusion shaft 62 to move, and the extrusion shaft 62 drives the gear 73 to move. When the gear 73 meshes with the rack 72, the rack 72 drives the gear 73 to rotate, and the gear 73 drives the extrusion shaft 62 to rotate, thereby discharging the gas in the first clamping airbag 35.

[0033] An extrusion airbag 64 is fixedly connected to the side wall of the extrusion plate 63 . The extrusion airbag 64 is connected to the third branch pipe 37 through the fourth branch pipe 65 . The extrusion airbag 64 can also fix the lead-acid battery.

[0034] The implementation principle of a lead-acid battery for an electric tractor in the embodiment of the present application is as follows: when the lead-acid battery needs to be fixed, the lead-acid battery is first placed on the mounting plate 11, and then the first bidirectional screw 21 is rotated, the first bidirectional screw 21 drives the two first mounting blocks 23 to move, the two first mounting blocks 23 drive the two first clamping plates 25 to approach each other, and at the same time, the first bidirectional screw 21 drives the second bidirectional screw 22 to rotate through the worm 211 and the worm gear 221, the second bidirectional screw 22 drives the two second mounting blocks 24 to move, the second mounting blocks 24 drive the two second clamping plates 26 to approach each other, the first clamping plate 25 drives the switch block 53 to move, and when the switch block 53 contacts the lead-acid battery, the switch block 53 slides relative to the first clamping plate 25, and the switch spring 52 is pressed. The first clamping airbag 25 is in contact with the lead-acid battery, and the second clamping airbag 26 is not in contact with the lead-acid battery. At the same time, the battery 42 energizes the electromagnet 43, and the electromagnet 43 attracts the iron sheet 44. The iron sheet 44 drives the blocking plate 41 to move, compresses the blocking spring 45, and the ventilation pipe 31 is opened. The buffer airbag 12 is affected by the gravity of the lead-acid battery, and the gas is discharged to the ventilation pipe 31 through the first branch pipe 33, and flows to the first clamping airbag 35 and the second clamping airbag 36 through the second branch pipe 34, the annular pipe 32, and the third branch pipe 37, so that the two first clamping airbags 35 and the two second clamping airbags 36 are respectively in contact with the lead-acid battery, and the lead-acid battery is fixed, which solves the problem that the lead-acid battery is easily damaged by shaking.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lead-acid battery for an electric tractor, comprising a housing (1), wherein a mounting plate (11) is placed in the housing (1), characterized in that: A clamping mechanism (2) is mounted on the mounting plate (11); a first mounting groove (111) and a second mounting groove (112) are formed on the top of the mounting plate (11); an extension direction of the first mounting groove (111) is perpendicular to an extension direction of the second mounting groove (112); and the clamping mechanism (2) comprises a first bidirectional screw (21) rotatably mounted in the first mounting groove (111) and a second bidirectional screw (22) rotatably mounted in the second mounting groove (112); The first bidirectional screw (21) is passed through the outer side of the mounting plate (11); a worm (211) is fixedly connected to the first bidirectional screw (21); a worm wheel (221) meshing with the worm (211) is fixedly connected to the second bidirectional screw (22); both ends of the first bidirectional screw (21) are threadedly connected to a first mounting block (23); both ends of the second bidirectional screw (22) are threadedly connected to a second mounting block (24); the tops of the two first mounting blocks (23) are fixedly connected to a first clamping plate (25); and the tops of the two second mounting blocks (24) are fixedly connected to a second clamping plate (26).

2. A lead-acid battery for an electric tractor according to claim 1, characterized in that: A buffer airbag (12) disposed below the mounting plate (11) is fixedly connected to the inner bottom surface of the shell (1), the mounting plate (11) is in contact with the buffer airbag (12), and a guide rod (13) is fixedly connected to the inner bottom surface of the shell (1), the guide rod (13) being inserted into the mounting plate (11).

3. A lead-acid battery for an electric tractor according to claim 2, characterized in that: The housing (1) is provided with a clamping mechanism (3), the clamping mechanism (3) comprising a ventilation tube (31) fixedly connected to the inner bottom surface of the housing (1) and an annular tube (32) fixedly connected to the mounting plate (11); one end of the ventilation tube (31) is connected to the buffer airbag (12) via a first branch tube (33); the other end of the ventilation tube (31) is connected to the annular tube (32) via a second branch tube (34); the two first clamping plates (25) are fixedly connected to a first clamping airbag (35); the two second clamping airbags (36) are fixedly connected to a second clamping airbag (36); the two first clamping airbags (35) and the two second clamping airbags (36) are connected to the annular tube (32) via a third branch tube (37); and a blocking mechanism (4) for blocking the ventilation tube (31) is installed in the housing (1).

4. A lead-acid battery for an electric tractor according to claim 3, characterized in that: A closed opening (311) is provided on the side wall of the ventilation pipe (31), and the blocking mechanism (4) comprises a blocking plate (41) slidably placed in the closed opening (311), and the blocking plate (41) is capable of blocking the ventilation pipe (31). A battery (42) and an electromagnet (43) are fixedly connected to the inner bottom surface of the shell (1), and the battery (42) and the electromagnet (43) are electrically connected via a wire. An iron sheet (44) used in conjunction with the electromagnet (43) is fixedly connected to the blocking plate (41), and a blocking spring (45) is fixedly connected to the blocking plate (41), and one end of the blocking spring (45) away from the blocking plate (41) is fixedly connected to the inner wall of the ventilation pipe (31). Switch components (5) are installed on both the first clamping plate (25) and the second clamping plate (26), and both of the switch components (5) are capable of controlling the battery (42) to energize and de-energize the electromagnet (43).

5. A lead-acid battery for an electric tractor according to claim 4, characterized in that: A switch slot (51) is provided on the side wall of the first clamping plate (25); the switch component (5) comprises a switch spring (52) fixedly connected to the inner wall of the switch slot (51) and a switch block (53) placed in the switch slot (51); the switch spring (52) is fixedly connected to the switch block (53); the switch block (53) is capable of contacting a lead-acid battery; a switch movable plate (54) electrically connected to the battery (42) via a wire is provided on the switch block (53); a switch fixed plate (55) electrically connected to the electromagnet (43) via a wire is provided on the inner wall of the switch slot (51); the switch movable plate (54) and the switch fixed plate (55) are used in conjunction with each other.

6. A lead-acid battery for an electric tractor according to claim 4, characterized in that: The two first clamping plates (25) and the two second clamping plates (26) are both equipped with a squeezing mechanism (6), the squeezing mechanism (6) comprising a fixing plate (61) fixedly connected to the first clamping plate (25), a squeezing shaft (62) rotatably mounted on the fixing plate (61), and a squeezing plate (63) fixedly connected to the squeezing shaft (62), the squeezing plate (63) being capable of contacting the first clamping airbag (35), a ventilation hole (411) being provided on the side wall of the blocking plate (41), a one-way valve (412) being installed in the ventilation hole (411), and a transmission mechanism (7) for driving the squeezing shaft (62) to rotate being installed on the mounting plate (11).

7. A lead-acid battery for an electric tractor according to claim 6, characterized in that: The transmission mechanism (7) comprises a support rod (71) fixedly connected to the mounting plate (11) and a rack (72) fixedly connected to the support rod (71), and a gear (73) capable of meshing with the rack (72) is fixedly connected to the extrusion shaft (62).

8. A lead-acid battery for an electric tractor according to claim 6, characterized in that: An extrusion airbag (64) is fixedly connected to the side wall of the extrusion plate (63), and the extrusion airbag (64) is connected to the third branch pipe (37) via a fourth branch pipe (65).

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