Electric forklift with anti-collision early warning function

Abstract

The invention relates to the technical field of electric forklifts, in particular to an electric forklift with an anti-collision early warning function, which comprises a lifting assembly main body, the lifting assembly main body is arranged on the electric forklift main body, a buzzer main body is arranged on the electric forklift main body, and a mounting plate is arranged on the side surface of the lifting assembly main body; a fixing plate is arranged on the mounting plate; the beneficial effects are that the induction is sensitive, the device is not affected by dust and other impurities, the buzzer main body is loud in sound, so that people can conveniently hear the early warning sound emitted by the device in a noisy environment, and the front and side protection early warning is arranged, so that the protection effect is good, and the device is convenient for people to use; and the connecting block slides along a square groove formed in the protection box to push the forward contact plate to slide, so that the forward contact plate is far away from or close to the mounting plate, the forward contact plate can adapt to protection and collision prevention of goods with different lengths on the lifting assembly main body, and the use adaptability of the device is improved.

Description

Technical Field

[0001] The present invention relates to the field of electric forklifts, in particular to an electric forklift with an anti-collision warning function. Background Art

[0002] An electric forklift is an electrically powered industrial handling tool widely used in indoor locations such as warehouses and logistics centers. It is environmentally friendly, quiet, efficient, and reliable. Its wheels are driven by an electric motor, enabling forward, reverse, and steering movements. A hydraulic system powered by the motor raises and lowers the forks, allowing the operator to precisely control their position and angle, ensuring safe and accurate handling of cargo.

[0003] Prior art has documented a cargo handling forklift with collision prevention and early warning functions, with authorization publication number CN114506797B. The forklift includes a support frame, drive wheels, a dual-axis motor, and a steering assembly. The drive wheels are symmetrically mounted on the right side of the lower portion of the support frame, and the dual-axis motor is located in the middle of the right side of the lower portion of the support frame. The output shafts on both the front and rear sides of the dual-axis motor are connected to the adjacent drive wheels, and the steering assembly is located in the lower portion of the support frame. The forklift's protective shell protects cargo during transport. If impacted, the shell moves inward, and a third spring acts as a buffer to prevent damage.

[0004] However, the device only uses a whistle as a sound warning component, which is easily affected by dust and other impurities in the air, and has insensitive sensing. In addition, the warning sound emitted by the whistle is easily masked in a noisy working environment, resulting in personnel being unable to detect collisions in time, making it inconvenient for personnel to use. Moreover, the device only provides protection warnings on the sides, and the protection effect is poor. Summary of the Invention

[0005] The purpose of the present invention is to provide an electric forklift with an anti-collision warning function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an electric forklift with an anti-collision warning function, comprising: a lifting assembly body, the lifting assembly body being arranged on the electric forklift body, a buzzer body being arranged on the electric forklift body, a mounting plate being arranged on the side of the lifting assembly body, a first air cylinder being arranged on the mounting plate, a first air pressure sensor being arranged on the first air cylinder, the first air cylinder being connected to a piston cylinder via a connecting pipe, a first piston body being arranged in the piston cylinder, the first piston body being connected to a first connecting rod, the first connecting rod being installed on a lateral contact plate through a first connecting hole; The mounting plate is provided with a fixing plate, the fixing plate is provided with a second air cylinder, the second air cylinder is provided with a second air pressure sensor, the second air cylinder is provided with a second piston body, the second piston body is connected with the second connecting rod, the second connecting rod passes through the second connecting hole and is connected with the sliding sleeve, a sliding groove is provided in the sliding sleeve, an adjusting screw and a slider are provided in the sliding groove, the slider is connected with the connecting block, one end of the connecting block is clamped in the square groove, and the connecting block is installed on the positive contact plate.

[0007] Preferably, a first air cylinder is fixedly connected to the mounting plate, a first air pressure sensor is fixedly mounted on the first air cylinder, the first air cylinder is connected to the piston cylinder through a connecting pipe, one end of the connecting pipe is fixedly connected to the first air cylinder and the other end is fixedly connected to the piston cylinder, and a first piston body is provided in the piston cylinder.

[0008] Preferably, the buzzer body is fixedly mounted on the electric forklift body, a lifting assembly body is mounted on the electric forklift body, a mounting plate is fixedly mounted on the side of the lifting assembly body, a piston cylinder is fixedly mounted on the mounting plate, a first connecting hole is opened on the piston cylinder, and the first connecting hole is a circular hole structure.

[0009] Preferably, the first piston body is fixedly connected to the first connecting rod, and a threaded hole is provided at one end of the first connecting rod close to the lateral contact plate and is threadedly connected to a bolt. The first connecting rod has a circular rod-shaped structure, and the first connecting rod can slide along the first connecting hole provided on the piston cylinder, and the other end of the first connecting rod is stuck in the mounting hole provided on the lateral contact plate. The lateral contact plate has a square plate-shaped structure, and a round rod is stuck in the positioning hole provided on the lateral contact plate. The round rod has a circular rod-shaped structure, and a limiting plate is fixedly connected to the round rod, and the threaded hole provided on the round rod is threadedly connected to the bolt.

[0010] Preferably, the mounting plate is fixedly connected to a limiting support block, which has an L-shaped plate structure. A connecting sleeve is clamped on the limiting support block, which can slide along the limiting support block. The other end of the connecting sleeve is fixedly connected to the positive contact plate, which has a square plate structure.

[0011] Preferably, a positioning plate is fixedly connected to the positive contact plate, and a connecting block is fixedly installed on the positive contact plate by bolts. The connecting block has an "L"-shaped plate structure, and one end of the connecting block is clamped in a square groove opened on the protective box. The connecting block can slide along the square groove, and the square groove has a square groove structure.

[0012] Preferably, a slider is fixedly connected to the connecting block, and the slider has a square plate-like structure. The slider can slide along the slide groove. The threaded hole opened on the slider is threadedly connected to the adjusting screw. One end of the adjusting screw is rotatably connected to the protective box, and the other end of the adjusting screw is fixedly connected to the shaft on the rotating handle. The shaft on the rotating handle is rotatably connected to the protective box. The protective box has a square box-like structure, and the protective box is fixedly connected to the sliding sleeve.

[0013] Preferably, the sliding sleeve is a square frame structure, the sliding sleeve is clamped on one end of the fixed plate, the sliding sleeve can slide along the fixed plate, the fixed plate is fixedly connected to the mounting plate, and the mounting sleeve is fixedly installed on the mounting plate by bolts.

[0014] Preferably, the side of the sliding sleeve is fixedly connected to a connecting plate, the connecting plate has a square plate-shaped structure, a second elastic spring is fixedly installed on the connecting plate, the other end of the second elastic spring is fixedly installed on the fixed plate, a second air cylinder is fixedly connected to the fixed plate, a second air pressure sensor is fixedly installed on the second air cylinder, a second piston body is provided in the second air cylinder, a second connecting rod is fixedly connected to the second piston body, the second connecting rod has a circular rod-shaped structure, the second connecting rod can slide along the second connecting hole opened on the second air cylinder, the second connecting hole has a circular hole-shaped structure.

[0015] Preferably, a circular plate is provided in the mounting sleeve, and the circular plate has a circular plate-shaped structure. A first elastic spring is fixedly installed on the circular plate, and the circular plate can slide along the mounting sleeve. A round rod is fixedly connected to the circular plate, and the round rod can slide along the circular hole opened on the mounting sleeve, and the circular hole has a circular hole-shaped structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The electric forklift with anti-collision warning function proposed by the present invention has the following characteristics: when the forward contact plate is squeezed, the second connecting rod slides along the second connecting hole provided on the second air cylinder, and the second piston body slides, so that the air pressure on the side close to the second air pressure sensor increases, and the air pressure change is sensed, and the other buzzer body is activated to remind personnel that the forward contact plate is squeezed and collided; and when the side contact plate is collided and squeezed, the first connecting rod slides along the first connecting hole provided on the piston cylinder, so that the air in the piston cylinder flows into the first air cylinder through the connecting pipe, and the air pressure change is sensed by the first air pressure sensor, and the buzzer body is activated by the control mechanism on the electric forklift body. It is used to remind personnel that the device has been hit, and it has sensitive sensing. The above settings make the device not affected by dust and other impurities, and the buzzer body is loud, which makes it easy for personnel to hear the warning sound issued by the device in a noisy environment, making it convenient for personnel to use. By rotating the adjusting screw along the threaded hole opened on the slider, the slider slides along the slide groove, and the slide groove has a square groove structure, so that the connecting block slides along the square groove opened on the protective box, pushing the positive contact plate to slide, so that the positive contact plate is away from or close to the mounting plate, so that the positive contact plate can adapt to protecting goods of different lengths on the lifting component body to prevent collisions, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the device of the present invention; Figure 2 for Figure 1 A in the middle is an enlarged structural diagram; Figure 3 It is a schematic cross-sectional view of part of the structure of the device of the present invention; Figure 4 for Figure 3 The enlarged structural diagram at B in the middle; Figure 5 It is a schematic cross-sectional view of a local structure of the device of the present invention; Figure 6 for Figure 5 The enlarged structural diagram at C in the middle; Figure 7 A schematic diagram of the local structure of the device of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point D in the middle.

[0018] Figure: 1. Electric forklift body; 2. Buzzer body; 3. Lifting assembly body; 4. Mounting plate; 5. Lateral contact plate; 6. Piston cylinder; 7. First connecting rod; 8. First piston body; 9. Connecting pipe; 10. First air cylinder; 11. First air pressure sensor; 12. First connecting hole; 13. Round rod; 14. Mounting sleeve; 15. Round hole; 16. Round plate; 17. First elastic spring; 18. Limit support block; 19. Connecting sleeve; 20. Forward Contact plate; 21. Connecting block; 22. Protective box; 23. Square groove; 24. Slide groove; 25. Adjusting screw; 26. Slider; 27. Turning handle; 28. Slide sleeve; 29. Fixing plate; 30. Connecting plate; 31. Second elastic spring; 32. Second connecting rod; 33. Second air cylinder; 34. Second air pressure sensor; 35. Second connecting hole; 36. Second piston body; 37. Positioning plate; 38. Limiting plate; 39. Mounting hole; 40. Positioning hole. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1 See also Figures 1-8The present invention provides a technical solution: an electric forklift with an anti-collision warning function, comprising: a lifting component body 3, the lifting component body 3 is arranged on the electric forklift body 1, the electric forklift body 1 is provided with a buzzer body 2, a mounting plate 4 is provided on the side of the lifting component body 3, a first air cylinder 10 is provided on the mounting plate 4, a first air cylinder 10 is provided on the first air cylinder 10, a first air pressure sensor 11 is provided on the first air cylinder 10, the first air cylinder 10 is connected to the piston cylinder 6 through a connecting pipe 9, a first piston body 8 is provided in the piston cylinder 6, the first piston body 8 is connected to the first connecting rod 7, the first connecting rod 7 passes through the first connecting hole 12 and is installed on the side Toward the contact plate 5; the mounting plate 4, the mounting plate 4 is provided with a fixing plate 29, the fixing plate 29 is provided with a second air cylinder 33, the second air cylinder 33 is provided with a second air pressure sensor 34, the second air cylinder 33 is provided with a second piston body 36, the second piston body 36 is connected to the second connecting rod 32, the second connecting rod 32 passes through the second connecting hole 35 and is connected to the sliding sleeve 28, the sliding sleeve 28 is provided with a slide groove 24, the slide groove 24 is provided with an adjusting screw 25 and a slider 26, the slider 26 is connected to the connecting block 21, one end of the connecting block 21 is clamped on the square groove 23, and the connecting block 21 is installed on the positive contact plate 20; The first air pressure sensor 11 and the second air pressure sensor 34 involved in the present invention are PT500-503 air pressure sensors produced by Puliang Electronics Co., Ltd.; In specific use, when the forward contact plate 20 is squeezed, the connecting sleeve 19 slides along the limit support block 18, and the second connecting rod 32 slides along the second connecting hole 35 opened on the second air cylinder 33. The second piston body 36 slides, and the air pressure on the side close to the second air pressure sensor 34 increases. When the air pressure changes, the control mechanism on the electric forklift body 1 activates the other buzzer body 2 to remind personnel that the forward contact plate 20 is squeezed and collided. When the side contact plate 5 is collided and squeezed, the first connecting rod 7 slides along the first connecting hole 35 opened on the piston cylinder 6. The hole 12 slides, causing the air in the piston cylinder 6 to flow into the first air cylinder 10 through the connecting pipe 9, and the air pressure change is sensed by the first air pressure sensor 11. The buzzer body 2 is activated by the control mechanism on the electric forklift body 1 to remind personnel that the device has been hit, and by rotating the adjusting screw 25 along the threaded hole opened on the slider 26, the slider 26 slides along the slide groove 24. The slide groove 24 has a square groove structure, so that the connecting block 21 slides along the square groove 23 opened on the protective box 22, pushing the positive contact plate 20 to slide, so that the positive contact plate 20 moves away from or close to the mounting plate 4.

[0021] Example 2 On the basis of Example 1, in order to improve the reliability of the device, a first piston body 8 is provided, the first piston body 8 is fixedly connected to the first connecting rod 7, and a threaded hole is provided at one end of the first connecting rod 7 close to the lateral contact plate 5 and is threadedly connected to the bolt. The first connecting rod 7 has a circular rod-shaped structure, and the first connecting rod 7 can slide along the first connecting hole 12 provided on the piston cylinder 6. The other end of the first connecting rod 7 is stuck in the mounting hole 39 provided on the lateral contact plate 5. The lateral contact plate 5 has a square plate-shaped structure, and a round rod 13 is stuck in the positioning hole 40 provided on the lateral contact plate 5. The round rod 13 has a circular rod-shaped structure, and a limiting plate 38 is fixedly connected to the round rod 13. The threaded hole provided on the round rod 13 is threadedly connected to the bolt. When the lateral contact plate 5 is collided and squeezed, the first connecting rod 7 slides along the first connecting hole 12 provided on the piston cylinder 6; The buzzer body 2 is fixedly mounted on the electric forklift body 1, and a lifting assembly body 3 is mounted on the electric forklift body 1. A mounting plate 4 is fixedly mounted on the side of the lifting assembly body 3, and a piston cylinder 6 is fixedly mounted on the mounting plate 4. A first connecting hole 12 is opened on the piston cylinder 6. The first connecting hole 12 has a circular hole structure. The first piston body 8 slides toward the mounting plate 4, so that the air in the piston cylinder 6 flows into the first air cylinder 10 through the connecting pipe 9; A first air cylinder 10 is fixedly connected to the mounting plate 4, and a first air pressure sensor 11 is fixedly mounted on the first air cylinder 10. The first air cylinder 10 is communicated with the piston cylinder 6 through a connecting pipe 9. One end of the connecting pipe 9 is fixedly connected to the first air cylinder 10 and the other end is fixedly connected to the piston cylinder 6. A first piston body 8 is provided in the piston cylinder 6, so that the air pressure in the first air cylinder 10 increases. When the semiconductor silicon on the first air pressure sensor 11 is subjected to pressure, the resistance value changes. The silicon diaphragm made by utilizing this effect is deformed under the action of air pressure, resulting in a change in resistance on the diaphragm. The air pressure is calculated by measuring the change in resistance, and the change in air pressure is sensed. The buzzer body 2 is activated by the control mechanism on the electric forklift body 1 to remind personnel, which is convenient for personnel to use; A circular plate 16 is provided in the mounting sleeve 14. The circular plate 16 has a circular plate-like structure. A first elastic spring 17 is fixedly installed on the circular plate 16. The circular plate 16 can slide along the mounting sleeve 14. A round rod 13 is fixedly connected to the circular plate 16. The round rod 13 can slide along the circular hole 15 opened on the mounting sleeve 14. The circular hole 15 has a circular hole-like structure. The round rod 13 is fixedly connected to the lateral contact plate 5. The other end of the first elastic spring 17 is in contact with the mounting plate 4, as shown in the example. Figure 5The first elastic spring 17 is shown in a normal state. When the lateral contact plate 5 moves inward toward the mounting plate 4, the round rod 13 slides along the round hole 15, and the round plate 16 squeezes the first elastic spring 17 to compress it. When the lateral contact plate 5 is no longer squeezed, the first elastic spring 17 stretches and returns to its original state, causing the round rod 13 to slide along the round hole 15, and the lateral contact plate 5 to move away from the mounting plate 4 and return to its original position. The diameter of the round plate 16 is equal to the inner diameter of the mounting sleeve 14. The first elastic spring 17 provided above is a consumable part that can be replaced regularly, meets conventional design standards, and does not affect the normal use of the product. The mounting plate 4 is fixedly connected to a limit support block 18, which is an L-shaped plate structure. A connecting sleeve 19 is clamped on the limit support block 18, and the connecting sleeve 19 can slide along the limit support block 18. The other end of the connecting sleeve 19 is fixedly connected to a positive contact plate 20, which is a square plate structure. When the positive contact plate 20 is squeezed; The sliding sleeve 28 is a square frame structure. The sliding sleeve 28 is stuck on one end of the fixed plate 29. The sliding sleeve 28 can slide along the fixed plate 29. The fixed plate 29 is fixedly connected to the mounting plate 4. The mounting sleeve 14 is fixedly installed on the mounting plate 4 by bolts. The connecting sleeve 19 slides along the limiting support block 18 to compress the second elastic spring 31 fixedly installed on the connecting plate 30. The first elastic spring 17 and the second elastic spring 31 are wearing parts that can be replaced regularly. They meet conventional design standards and do not affect the normal use of the product. When the positive contact plate 20 is not squeezed, the second elastic spring 31 stretches to restore its original shape, which can push the connecting plate 30 to make the sliding sleeve 28 slide along the fixed plate 29, so that the positive contact plate 20 returns to its original position as shown in the example. Figure 5 Position shown; The side of the sliding sleeve 28 is fixedly connected to a connecting plate 30, and the connecting plate 30 is a square plate-shaped structure. A second elastic spring 31 is fixedly installed on the connecting plate 30, and the other end of the second elastic spring 31 is fixedly installed on the fixing plate 29. The fixing plate 29 is fixedly connected to a second air cylinder 33, and a second air pressure sensor 34 is fixedly installed on the second air cylinder 33. A second piston body 36 is provided in the second air cylinder 33, and a second connecting rod 32 is fixedly connected to the second piston body 36. The second connecting rod 32 is a circular rod-shaped structure, and the second connecting rod 32 can slide along the second connecting hole 35 opened on the second air cylinder 33. The second connecting hole 35 is a circular hole-shaped structure, so that the connecting sleeve 19 slides along the limiting support block 18, and the positive contact plate 20 is supported by the setting of the connecting sleeve 19 in cooperation with the limiting support block 18 to ensure its stability. The second connecting rod 32 slides along the second connecting hole 35 provided on the second air cylinder 33, and the second piston body 36 is provided to slide, so that the air pressure on the side close to the second air pressure sensor 34 increases. When the semiconductor silicon on the second air pressure sensor 34 is subjected to pressure, the resistance value will change. The silicon diaphragm made by utilizing this effect will be deformed under the action of air pressure, resulting in a change in resistance on the diaphragm. The air pressure is calculated by measuring the change in resistance, and the change in air pressure is sensed. The control mechanism on the electric forklift body 1 is used to activate other buzzer bodies 2 to remind personnel. Different sounds can be set for different buzzer bodies 2, which is convenient for personnel to use. The above settings make the device not affected by impurities such as dust, and the buzzer body 2 is loud, which is convenient for personnel to hear the warning sound issued by the device in a noisy environment, which is convenient for personnel to use.

[0022] Example 3 The adjusting screw 25 can be rotated along the threaded hole provided on the slider 26, and the sliding groove 24 has a square groove-shaped structure; The positive contact plate 20 is fixedly connected to a positioning plate 37, and a connecting block 21 is fixedly installed on the positive contact plate 20 by bolts. The connecting block 21 is an "L"-shaped plate structure, and one end of the connecting block 21 is stuck in the square groove 23 opened on the protection box 22. The connecting block 21 can slide along the square groove 23. The square groove 23 is a square groove structure, so that the slider 26 slides along the slide groove 24. The slide groove 24 is a square groove structure, so that the connecting block 21 slides along the square groove 23 opened on the protection box 22, pushing the positive contact plate 20 to slide, so that the positive contact plate 20 is away from or close to the mounting plate 4, so that the positive contact plate 20 can adapt to the protection of goods of different lengths on the lifting component body 3 to prevent collision, thereby improving the adaptability of the device. The head size of the bolt selected above is larger than the mounting hole 39 and the positioning hole 40, as shown in the example Figure 1 The head of the bolt shown can cover the mounting hole 39 and the positioning hole 40. The limiting plate 38 is a circular plate-shaped structure. The outer diameter of the limiting plate 38 is larger than the diameter of the round rod 13, and the diameter of the round rod 13 is equal to the inner diameter of the positioning hole 40. The bolt is threadedly connected to the threaded hole opened on the end surface of the round rod 13, and the limiting plate 38 can be used to fix the side contact plate 5 to the round rod 13. The round rod 13 and the first connecting rod 7 are made of high-strength material. The personnel can pull the side contact plate 5 to make the round rod 13 disengage from the positioning hole 40 by twisting and removing the bolts on the first connecting rod 7 and the round rod 13. The first connecting rod 7 is disengaged from the mounting hole 39, and the side contact plate 5 can be removed and replaced with a new side contact plate 5, which is convenient for personnel to maintain later. The personnel can twist and remove the bolts on the connecting block 21, and the connecting block 21 can be removed for replacement. The connecting sleeve 19 is a square plate and an "L"-shaped groove is opened on the side of the connecting sleeve 19, as shown in the example Figure 8 As shown, during installation, the personnel can align the notch in the middle of the connecting sleeve 19 fixedly connected to the forward contact plate 20 with the limiting support block 18, so that the limiting support block 18 is stuck in the notch in the middle of the connecting sleeve 19, and the connecting sleeve 19 slides along the limiting support block 18, so that the positioning plate 37 contacts the side of the connecting block 21, so that the hole opened on the connecting block 21 is aligned with the threaded hole opened on the forward contact plate 20, and the personnel can pass the bolt through the hole opened on the connecting block 21 and thread it with the threaded hole opened on the forward contact plate 20, so as to complete the installation of the forward contact plate 20. The forward contact plate 20 and the lateral contact plate 5 are consumable parts. Through the above settings, the personnel can disassemble and replace the consumable parts, thereby improving the maintainability of the device.

[0023] In actual use, when the forward contact plate 20 is squeezed, the second connecting rod 32 slides along the second connecting hole 35 provided on the second air cylinder 33, and the second piston body 36 slides, so that the air pressure on the side close to the second air pressure sensor 34 increases, and the air pressure change is sensed, and the other buzzer body 2 is activated to remind personnel that the forward contact plate 20 is squeezed and collided. When the side contact plate 5 is collided and squeezed, the first connecting rod 7 slides along the first connecting hole 12 provided on the piston cylinder 6, so that the air in the piston cylinder 6 flows into the first air cylinder 10 through the connecting pipe 9, and the air pressure change is sensed by the first air pressure sensor 11, and the buzzer body 2 is activated by the control mechanism on the electric forklift body 1 to remind personnel that the forward contact plate 20 is squeezed and collided. The device is alerted to the impact of dust and other impurities, and the buzzer body 2 is loud, which makes it easy for people to hear the warning sound of the device in a noisy environment, and is convenient for people to use. The adjusting screw 25 is rotated along the threaded hole opened on the slider 26, so that the slider 26 slides along the slide groove 24. The slide groove 24 has a square groove structure, so that the connecting block 21 slides along the square groove 23 opened on the protective box 22, pushing the positive contact plate 20 to slide, so that the positive contact plate 20 is away from or close to the mounting plate 4, so that the positive contact plate 20 can adapt to the protection of goods of different lengths on the lifting component body 3 to prevent collisions, thereby improving the adaptability of the device.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Electric forklifts with anti-collision warning function, including: A lifting assembly body (3), the lifting assembly body (3) is arranged on an electric forklift body (1), a buzzer body (2) is arranged on the electric forklift body (1), and is characterized in that: a mounting plate (4) is arranged on the side of the lifting assembly body (3), a first air cylinder (10) is arranged on the mounting plate (4), a first air pressure sensor (11) is arranged on the first air cylinder (10), the first air cylinder (10) is connected to the piston cylinder (6) through a connecting pipe (9), a first piston body (8) is arranged in the piston cylinder (6), the first piston body (8) is connected to a first connecting rod (7), and the first connecting rod (7) passes through a first connecting hole (12) and is installed on the lateral contact plate (5); A mounting plate (4) is provided on the mounting plate (4), a fixing plate (29) is provided on the fixing plate (29), a second air cylinder (33) is provided on the second air cylinder (33), a second air pressure sensor (34) is provided on the second air cylinder (33), a second piston body (36) is provided in the second air cylinder (33), the second piston body (36) is connected to the second connecting rod (32), the second connecting rod (32) passes through the second connecting hole (35) and is connected to the sliding sleeve (28), a sliding groove (24) is provided in the sliding sleeve (28), an adjusting screw (25) and a slider (26) are provided in the sliding groove (24), the slider (26) is connected to the connecting block (21), one end of the connecting block (21) is clamped on the square groove (23), and the connecting block (21) is installed on the positive contact plate (20).

2. The electric forklift with anti-collision warning function according to claim 1, characterized in that: A first air cylinder (10) is fixedly connected to the mounting plate (4), a first air pressure sensor (11) is fixedly mounted on the first air cylinder (10), the first air cylinder (10) is connected to the piston cylinder (6) via a connecting pipe (9), one end of the connecting pipe (9) is fixedly connected to the first air cylinder (10) and the other end is fixedly connected to the piston cylinder (6), and a first piston body (8) is provided in the piston cylinder (6).

3. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The buzzer body (2) is fixedly mounted on the electric forklift body (1), a lifting assembly body (3) is mounted on the electric forklift body (1), a mounting plate (4) is fixedly mounted on the side of the lifting assembly body (3), a piston cylinder (6) is fixedly mounted on the mounting plate (4), a first connecting hole (12) is provided on the piston cylinder (6), and the first connecting hole (12) is a circular hole structure.

4. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The first piston body (8) is fixedly connected to the first connecting rod (7). A threaded hole is provided at one end of the first connecting rod (7) close to the lateral contact plate (5) and is threadedly connected to a bolt. The first connecting rod (7) is in a circular rod-shaped structure. The first connecting rod (7) can slide along the first connecting hole (12) provided on the piston cylinder (6). The other end of the first connecting rod (7) is clamped in the mounting hole (39) provided on the lateral contact plate (5). The lateral contact plate (5) is in a square plate-shaped structure. A round rod (13) is clamped in the positioning hole (40) provided on the lateral contact plate (5). The round rod (13) is in a circular rod-shaped structure. A limiting plate (38) is fixedly connected to the round rod (13). The threaded hole provided on the round rod (13) is threadedly connected to the bolt.

5. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The mounting plate (4) is fixedly connected to a limit support block (18), which is an L-shaped plate-like structure. A connecting sleeve (19) is clamped on the limit support block (18), and the connecting sleeve (19) can slide along the limit support block (18). The other end of the connecting sleeve (19) is fixedly connected to a positive contact plate (20), and the positive contact plate (20) is a square plate-like structure.

6. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The forward contact plate (20) is fixedly connected to a positioning plate (37), and a connecting block (21) is fixedly mounted on the forward contact plate (20) by means of bolts. The connecting block (21) is an "L"-shaped plate structure. One end of the connecting block (21) is clamped on a square groove (23) provided on the protection box (22). The connecting block (21) can slide along the square groove (23), and the square groove (23) is a square groove structure.

7. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The connecting block (21) is fixedly connected to a slider (26), which has a square plate-like structure. The slider (26) can slide along the slide groove (24). The threaded hole provided on the slider (26) is threadedly connected to the adjusting screw (25). One end of the adjusting screw (25) is rotatably connected to the protection box (22). The other end of the adjusting screw (25) is fixedly connected to the shaft on the rotating handle (27). The shaft on the rotating handle (27) is rotatably connected to the protection box (22). The protection box (22) has a square box-like structure. The protection box (22) is fixedly connected to the sliding sleeve (28).

8. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The sliding sleeve (28) is a square frame structure. The sliding sleeve (28) is clamped on one end of the fixed plate (29). The sliding sleeve (28) can slide along the fixed plate (29). The fixed plate (29) is fixedly connected to the mounting plate (4). The mounting sleeve (14) is fixedly mounted on the mounting plate (4) by bolts.

9. The electric forklift with anti-collision warning function according to claim 1, characterized in that: The side of the sliding sleeve (28) is fixedly connected to a connecting plate (30), which has a square plate-shaped structure. A second elastic spring (31) is fixedly mounted on the connecting plate (30), and the other end of the second elastic spring (31) is fixedly mounted on the fixed plate (29). A second air cylinder (33) is fixedly connected to the fixed plate (29), and a second air pressure sensor (34) is fixedly mounted on the second air cylinder (33). A second piston body (36) is provided in the second air cylinder (33), and a second connecting rod (32) is fixedly connected to the second piston body (36). The second connecting rod (32) has a circular rod-shaped structure and can slide along a second connecting hole (35) provided on the second air cylinder (33). The second connecting hole (35) has a circular hole-shaped structure.

10. The electric forklift with anti-collision warning function according to claim 8, characterized in that: A circular plate (16) is provided in the mounting sleeve (14), and the circular plate (16) has a circular plate-shaped structure. A first elastic spring (17) is fixedly mounted on the circular plate (16), and the circular plate (16) can slide along the mounting sleeve (14). A round rod (13) is fixedly connected to the circular plate (16), and the round rod (13) can slide along a round hole (15) opened on the mounting sleeve (14), and the round hole (15) has a circular hole-shaped structure.

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