Overhead working truck capable of automatically locking supporting legs

Abstract

The utility model discloses an overhead working truck capable of automatically locking supporting legs, which comprises a working truck, a supporting platform is fixedly connected above the rear end of the working truck, supporting blocks are fixedly connected at the front ends and the rear ends of the left side and the right side of the supporting platform, a plurality of groups of through holes are formed in the upper ends of the supporting blocks, and a plurality of groups of through holes are formed in the lower ends of the supporting blocks. A limiting rod is slidably connected into a through hole in the front end of the supporting block, multiple sets of rectangular through holes are formed in the limiting rod, movable blocks are slidably connected to the inner sides of the limiting rod through holes and the rectangular through holes, the movable blocks are slidably connected to the surface of the supporting platform, screw rods are connected to the inner sides of the movable blocks in a threaded fit mode, and a groove is formed in the front end of the supporting block; a motor is fixedly connected to the inner side of the groove of the supporting block, the output end of the front end of the motor is fixedly connected with a screw rod, the screw rod rotates through rotation of the motor, the movable block moves forwards or backwards under the action of threaded fit connection, and self-locking of the supporting leg can be completed when the movable block is matched with the limiting rod.

Description

Technical Field

[0001] This utility model relates to the field of support leg technology, and in particular to an aerial work platform with automatically locking support legs. Background Technology

[0002] Aerial work platforms are vehicles with a height of 3 meters or more, controlled by hydraulic or electric systems, capable of lifting and lowering to perform work. Construction workers use aerial work platforms to work in the air. They are vehicles powered by multiple hydraulic cylinders controlled by hydraulic or electric systems, enabling them to lift and lower to perform work. Construction workers use aerial work platforms to work in the air. Aerial work platforms are classified into scissor lifts, telescopic boom lifts, straight boom lifts, and articulated boom lifts, among others.

[0003] However, the existing type of aerial work platform with automatic locking support legs still has certain drawbacks: during operation, the aerial work platform relies on a hydraulic system to support the support legs, but the hydraulic support system still has a certain degree of instability. When the hydraulic system fails, the entire hydraulic support leg will lose support, causing the aerial work platform to shift to one side and tip over, resulting in accidents and losses of manpower and financial resources. Summary of the Invention

[0004] The purpose of this utility model is to provide an aerial work platform with an automatic locking support leg, which enables the movable block and the limit rod to cooperate through a motor-driven screw after the hydraulic support leg is in place, thereby increasing additional safety.

[0005] To achieve the above objectives, an aerial work platform with automatic locking support legs is provided, comprising: a work vehicle, a support platform fixedly connected to the upper rear end of the work vehicle, support blocks fixedly connected to the front and rear ends of the support platform on both sides, multiple sets of through holes opened at the upper end of the support blocks, a limit rod slidably connected in the through hole at the front end of the support block, multiple sets of rectangular through holes opened on the limit rod, a movable block slidably connected in the rectangular through holes of the limit rod, the movable block slidably connected on the surface of the support platform, and a screw threadedly connected in the inner side of the movable block;

[0006] The front end of the support block has a groove, and a motor is fixedly connected to the inner side of the groove. The output end of the motor is fixedly connected to the screw.

[0007] According to the aerial work vehicle with automatic locking support legs, the upper end of the support block is fixedly connected to a limiting groove, and the movable block is slidably connected inside the limiting groove.

[0008] According to the aerial work platform with automatic locking support legs, a limit block is fixedly connected to the upper end of the limit rod.

[0009] According to the aerial work platform with automatic locking support legs, a sliding rod is slidably connected to the inner side of the through hole at the rear end of the support block, and a limiting piece is fixedly connected to the upper end of the sliding rod.

[0010] According to the aerial work platform with automatic locking support legs, a hydraulic pipe is fixedly connected to the upper end of the support platform, and a hydraulic cylinder is fixedly connected to the end of the hydraulic pipe.

[0011] According to the aerial work platform with automatic locking support legs, a piston cylinder is fixedly connected to the lower end of the hydraulic cylinder, a piston rod is slidably connected to the inner side of the piston cylinder, a buffer block is fixedly connected to the lower end of the piston rod, and the upper end of the buffer block is fixedly connected to a sliding rod and a limiting rod.

[0012] According to the aerial work platform with automatic locking support legs, the lower end of the piston rod is fixedly connected to a support rod, and the lower end of the support rod is fixedly connected to a buffer plate.

[0013] According to the aerial work platform with automatic locking support legs, multiple sets of tires are rotatably connected to the left and right sides of the platform.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. Through the cooperation of the motor, screw, movable block, limit groove, limit rod, support platform and slide rod, the support leg is supported to the ground by the hydraulic system. The drive motor causes the screw at the front end to rotate synchronously. Under the action of the threaded connection, the movable block slides forward along the surface of the limit groove and the support platform. When the movable block slides to the front end of the rectangular through hole inside the limit rod, it can automatically lock the entire support leg, thereby making the support leg more stable.

[0016] 2. By setting support rods on both sides of the lower end of the piston rod, and providing buffer plates at the lower end of the support rods, and by making the two support rods non-parallel to the piston rod, the support legs can be made more stable through the cooperation of the buffer plates and buffer blocks.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an aerial work platform with automatically locking support legs according to this utility model.

[0019] Figure 2 This is a schematic diagram of the hydraulic support system of an aerial work platform with an automatic locking support leg, according to the present invention.

[0020] Figure 3This is a schematic diagram of the sliding locking component of an aerial work platform with an automatic locking support leg according to the present invention.

[0021] Figure 4 This is a schematic diagram of the support component of an aerial work platform with an automatic locking support leg according to the present invention.

[0022] Legend:

[0023] 1. Operating vehicle; 2. Tires; 3. Support platform; 4. Hydraulic pipe; 5. Hydraulic cylinder; 6. Piston cylinder; 7. Limiting plate; 8. Piston rod; 9. Slide rod; 10. Limiting block; 11. Support block; 12. Buffer block; 13. Limiting rod; 14. Limiting groove; 15. Screw; 16. Motor; 17. Support rod; 18. Buffer plate; 19. Movable block. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model provides an aerial work vehicle with an automatic locking support leg, comprising: a work vehicle 1, a support platform 3 fixedly connected to the upper rear end of the work vehicle 1, a support platform 3, support blocks 11 fixedly connected to the front and rear ends of the left and right sides of the support platform 3, a plurality of through holes opened at the upper end of the support blocks 11, a limit rod 13 slidably connected in the through hole at the front end of the support blocks 11, a plurality of rectangular through holes opened on the limit rod 13, a movable block 19 slidably connected in the rectangular through holes of the limit rod 13, the movable block 19 slidably connected on the surface of the support platform 3, and a screw rod 15 threadedly connected in the inner side of the movable block 19;

[0026] The front end of the support block 11 has a groove, and the motor 16 is fixedly connected to the inner side of the groove of the support block 11. The output end of the front end of the motor 16 is fixedly connected to the screw 15.

[0027] The upper end of the support block 11 is fixedly connected to the limiting groove 14, and the movable block 19 is slidably connected inside the limiting groove 14. The limiting groove 14 enables the support block 11 to always slide inside the limiting groove 14 without shifting.

[0028] A limiting block 10 is fixedly connected to the upper end of the limiting rod 13. When the limiting rod 13 descends to the lowest position, the limiting block 10 can limit the limiting rod 13 and prevent it from falling off.

[0029] A slide rod 9 is slidably connected to the inner side of the through hole at the rear end of the support block 11. A limit piece 7 is fixedly connected to the upper end of the slide rod 9, which enables the buffer block 12 to always move vertically up and down.

[0030] A hydraulic pipe 4 is fixedly connected to the upper end of the support platform 3, and a hydraulic cylinder 5 is fixedly connected to the end of the hydraulic pipe 4. By pressurizing and depressurizing the hydraulic pipe 4, the amount of hydraulic pressure inside the hydraulic cylinder 5 can be controlled, thereby controlling the lifting and lowering of the piston rod 8.

[0031] A piston cylinder 6 is fixedly connected to the lower end of the hydraulic cylinder 5. A piston rod 8 is slidably connected to the inner side of the piston cylinder 6. A buffer block 12 is fixedly connected to the lower end of the piston rod 8. The upper end of the buffer block 12 is fixedly connected to the slide rod 9 and the limit rod 13. The piston cylinder 6 is fixedly connected to the support block 11, and the piston rod 8 is slidably connected to the support block 11.

[0032] A support rod 17 is fixedly connected to the lower end of the piston rod 8, and a buffer plate 18 is fixedly connected to the lower end of the support rod 17. The support rod 17 and the piston rod 8 are not parallel to each other, and the support rod 17 and the piston rod 8 form a triangular support relationship, which makes the overall support leg more stable.

[0033] Multiple sets of tires 2 are rotatably connected to the left and right sides of the work vehicle 1. The tires 2 can simultaneously bear the pressure of the work vehicle 1 when the support legs are working.

[0034] Working principle: During use, the hydraulic system is activated, causing hydraulic oil to flow along the inner side of the hydraulic pipe 1 into the hydraulic cylinder 5. This causes the piston cylinder 6 to push the lower piston rod 8 downwards, bringing the lower buffer block 12 into contact with the ground. When the buffer block 12 contacts the ground, the support rods 17 on both sides of the piston rod 8 simultaneously drive the lower buffer plate 18 to contact the ground. The support rods 17 and the piston rod 8 form a triangular support, making the support leg more stable. When the buffer block 12 contacts the ground, the rectangular through hole on the upper rear limit rod 13 of the buffer block 12 is flush with the upper surface of the support platform 3. At this time, the motor 16 is activated, causing the front screw 15 to rotate synchronously. Under the action of the threaded connection, The movable block 19 slides forward along the inner side of the limiting groove 14 and the surface of the support platform 3. Since the size of the movable block 19 is equal to the size of the rectangular through hole inside the limiting rod 13, when the movable block 19 slides into the matrix-shaped through hole inside the limiting rod 13, the two cooperate with each other so that the movable block 19 can limit the limiting rod 13 and automatically lock the entire support leg. The upper end of the limiting rod 13 is provided with a limiting block 10, which can prevent the limiting rod 13 from falling off when descending. The front end of the buffer block 12 is provided with a sliding rod 9, and the upper end of the sliding rod 9 is provided with a limiting piece 7, which can effectively prevent the sliding rod 9 from falling off. The sliding rod 9 slides inside the support platform 3. The presence of the sliding rod 9 allows the piston rod 8 to always move vertically when sliding up and down.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An aerial work platform with automatically locking support legs, comprising: The work vehicle (1) is characterized in that a support platform (3) is fixedly connected above the rear end of the work vehicle (1), and support blocks (11) are fixedly connected to the front and rear ends of the left and right sides of the support platform (3). Multiple sets of through holes are opened at the upper end of the support block (11), and a limit rod (13) is slidably connected in the through hole at the front end of the support block (11). Multiple sets of rectangular through holes are opened on the limit rod (13), and a movable block (19) is slidably connected inside the rectangular through hole of the limit rod (13). The movable block (19) is slidably connected on the surface of the support platform (3), and a screw (15) is threadedly connected inside the movable block (19). The front end of the support block (11) has a groove, and a motor (16) is fixedly connected to the inner side of the groove of the support block (11). The output end of the front end of the motor (16) is fixedly connected to the screw (15).

2. The aerial work platform with automatically locking support legs according to claim 1, characterized in that, The upper end of the support block (11) is fixedly connected to the limiting groove (14), and the movable block (19) is slidably connected inside the limiting groove (14).

3. The aerial work platform with automatically locking support legs according to claim 1, characterized in that, The upper end of the limiting rod (13) is fixedly connected to the limiting block (10).

4. The aerial work platform with automatically locking support legs according to claim 1, characterized in that, The support block (11) has a sliding rod (9) slidably connected to the inner side of the through hole at the rear end, and the upper end of the sliding rod (9) is fixedly connected to a limiting piece (7).

5. The aerial work platform with automatically locking support legs according to claim 1, characterized in that, The upper end of the support platform (3) is fixedly connected to a hydraulic pipe (4), and the end of the hydraulic pipe (4) is fixedly connected to a hydraulic cylinder (5).

6. The aerial work platform with automatically locking support legs according to claim 5, characterized in that, The lower end of the hydraulic cylinder (5) is fixedly connected to a piston cylinder (6), and a piston rod (8) is slidably connected to the inner side of the piston cylinder (6). A buffer block (12) is fixedly connected to the lower end of the piston rod (8), and the upper end of the buffer block (12) is fixedly connected to the slide rod (9) and the limit rod (13).

7. The aerial work platform with automatically locking support legs according to claim 6, characterized in that, The lower end of the piston rod (8) is fixedly connected to a support rod (17), and the lower end of the support rod (17) is fixedly connected to a buffer plate (18).

8. The aerial work platform with automatically locking support legs according to claim 1, characterized in that, The work vehicle (1) has multiple sets of tires (2) rotatably connected to its left and right sides.

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