Lift truck for fire-fighting construction

Abstract

The lifting vehicle comprises a vehicle body, a cavity is formed in the vehicle body, rectangular holes communicating with the cavity are formed in the four corners of the bottom end face of the vehicle body correspondingly, lifting blocks are slidably connected into the rectangular holes, and threaded rods are rotationally connected to the four corners of the inner top wall of the cavity correspondingly; the lifting blocks are arranged on the outer sides of the threaded rods in a threaded and sleeving mode, universal wheels are installed on the bottom sides of the lifting blocks, first driven wheels and second driven wheels are sequentially and fixedly connected to the outer sides of the threaded rods from top to bottom, rotating shafts are rotationally connected to the middles of the cavity bodies, and every two first driven wheels which are adjacent left and right are connected through a first transmission belt; an electric push rod is controlled to work to drive a tooth block to move, so that a gear rotates, a lifting block drives a universal wheel to move upwards, the universal wheel retracts into a rectangular hole, the bottom of the vehicle body makes contact with the ground, the stability of the vehicle body when the vehicle body is placed on the ground is improved through cooperation with the effect of an anti-skid rubber pad, and the safety of constructors is improved.

Description

Technical Field

[0001] This application relates to the field of lifting vehicle technology, and more specifically, to a lifting vehicle for fire protection construction. Background Technology

[0002] "Firefighting" means eliminating hidden dangers and preventing disasters (i.e., the general term for preventing and resolving man-made, natural, and accidental disasters encountered by people in the process of life, work, and study). Of course, in the early stages of people's understanding, the narrow meaning was: (extinguishing) fires. During the firefighting construction process, the use of lifting vehicles is required for further functions.

[0003] Most existing fire-fighting construction aerial work platforms rely on casters for movement, but the retraction of these casters is inconvenient when stationary. For example, the casters of common aerial work platforms lack stability when stationary because their contact with the ground is limited. This results in the vehicle body easily swaying during lifting due to poor stability, significantly increasing the safety risks for construction workers.

[0004] To address the aforementioned problems, this application provides a lifting vehicle for fire protection construction. Utility Model Content

[0005] One objective of this application is to provide a lifting vehicle for fire fighting construction, comprising a vehicle body with a cavity inside. Rectangular holes communicating with the cavity are formed at each of the four corners of the bottom surface of the vehicle body. Lifting blocks are slidably connected inside the rectangular holes. Threaded rods are rotatably connected to each of the four corners of the inner top wall of the cavity, and the lifting blocks are threaded onto the outer side of the threaded rods. Universal wheels are installed on the bottom side of the lifting blocks. A first driven wheel and a second driven wheel are sequentially fixedly connected from top to bottom to the outer side of the threaded rods. A rotating shaft is rotatably connected to the center of the cavity. Two adjacent first driven wheels are connected by a first transmission belt, and two second driven wheels near the left side of the vehicle body are connected by a second transmission belt. A driving wheel is fixedly connected to the outer side of the rotating shaft, and the driving wheel and one of the second driven wheels are connected by a third transmission belt. A drive assembly is provided inside the cavity.

[0006] Furthermore, the drive assembly includes a gear and a toothed block. The gear is fixedly connected to the outer side of the rotating shaft, the toothed block is slidably connected to the inside of the cavity, and an electric push rod is fixedly connected to the outer side of the vehicle body. The output end of the electric push rod extends into the inside of the cavity and is fixedly connected to the toothed block.

[0007] Furthermore, the gear is positioned above the drive wheel, and the gear and the gear block are meshed and connected for transmission.

[0008] Furthermore, a rectangular plate is fixedly connected inside the cavity, the rectangular plate is positioned above the second transmission belt, and the toothed block is slidably sleeved on the outside of the rectangular plate.

[0009] Furthermore, the inner wall of the rectangular hole is symmetrically provided with sliding grooves, and a sliding block is slidably connected inside the sliding groove. The sliding block is fixedly connected to the outer side of the lifting block.

[0010] Furthermore, each of the four corners of the inner top wall of the cavity is provided with a circular groove, and a cylinder is rotatably connected inside the circular groove. The top end of the threaded rod is fixedly connected to the bottom end face of the cylinder.

[0011] The beneficial effects of this application are:

[0012] The electric push rod controls the toothed block to slide on the outside of the rectangular plate. The movement of the toothed block drives the gear to rotate, which in turn drives the drive wheel, the third transmission belt, one of the second driven wheels, and one threaded rod. The rotation of the threaded rod, in conjunction with the action of multiple first driven wheels, multiple second driven wheels, two first transmission belts, and one second transmission belt, ensures that the four threaded rods rotate synchronously. The rotation of the threaded rod causes the lifting block, which is slidably connected inside the rectangular hole, to move downwards, thereby causing the casters to move downwards and contact the ground, suspending the vehicle body above the ground. This allows for easy movement of the vehicle body using the multiple casters. After reaching the destination, the electric push rod is controlled to move the toothed block, which in turn causes the gear to reverse. This causes the lifting block to move the casters upwards, retracting them into the rectangular hole, bringing the bottom of the vehicle body into contact with the ground. The anti-slip rubber pads further enhance the stability of the vehicle body when placed on the ground, improving the safety of construction workers. Attached Figure Description

[0013] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the cavity in this application;

[0017] Figure 3 This is a cross-sectional view of this application;

[0018] Figure 4 This is a partial structural diagram of this application.

[0019] Explanation of the labels in the diagram:

[0020] 1. Vehicle body; 2. Electric push rod; 3. Rectangular hole; 4. Universal wheel; 5. Sliding groove; 6. Lifting block; 7. Cavity; 8. First transmission belt; 9. Second transmission belt; 10. Third transmission belt; 11. Rotating shaft; 12. Gear block; 13. Rectangular plate; 14. First driven wheel; 15. Second driven wheel; 16. Driving wheel; 17. Gear; 18. Sliding block; 19. Threaded rod. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Example:

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4This application discloses a lifting vehicle for fire fighting construction, including a vehicle body 1. A cavity 7 is formed inside the vehicle body 1. Rectangular holes 3, communicating with the cavity 7, are formed at each of the four corners of the bottom surface of the vehicle body 1. Lifting blocks 6 are slidably connected inside the rectangular holes 3. Threaded rods 19 are rotatably connected to each of the four corners of the inner top wall of the cavity 7, and the lifting blocks 6 are threaded onto the outside of the threaded rods 19. Universal wheels 4 are installed on the bottom side of the lifting blocks 6. A first driven wheel 14 and a second driven wheel 15 are sequentially fixedly connected from top to bottom to the outside of the threaded rods 19. A rotating shaft 11 is rotatably connected to the middle of the cavity 7. Rectangular holes 3 are formed at each of the four corners of the inner top wall of the cavity 7. A cylindrical groove is rotatably connected inside the cylindrical groove. The cylinder is rotatably mounted inside the cylindrical groove via bearings embedded inside the cylindrical groove. Both ends of the rotating shaft 11 are rotatably connected to the inner wall of the cavity 7 via bearings. The top end of the threaded rod 19 is fixedly connected to the bottom end face of the cylinder. Two adjacent first driven wheels 14 are connected by a first transmission belt 8. Two second driven wheels 15 near the left side of the vehicle body 1 are connected by a second transmission belt 9. A driving wheel 16 is fixedly connected to the outside of the rotating shaft 11. The driving wheel 16 and one of the second driven wheels 15 are connected by a third transmission belt 10. A drive assembly is installed inside the cavity 7.

[0026] Please see Figure 2 and Figure 4 The drive assembly includes a gear 17 and a gear block 12. The gear 17 is fixedly connected to the outer side of the rotating shaft 11 and is positioned above the drive wheel 16. The gear 17 and the gear block 12 are meshed and connected. The gear block 12 is slidably connected inside the cavity 7. An electric push rod 2 is fixedly connected to the outer side of the vehicle body 1. Controlling the electric push rod 2 causes the gear block 12 to slide on the outer side of the rectangular plate 13. The movement of the gear block 12 drives the gear 17 to rotate. The rotation of the gear 17 drives the drive wheel 16, the third transmission belt 10, one of the second driven pulleys 15, and one of the screws... The threaded rod 19 rotates, and the rotation of one of the threaded rods 19, in conjunction with the action of multiple first driven wheels 14, multiple second driven wheels 15, two first transmission belts 8 and one second transmission belt 9, enables the four threaded rods 19 to rotate synchronously. The rotation of the threaded rod 19 causes the lifting block 6, which is slidably connected inside the rectangular hole 3, to move downward, thereby driving the universal wheel 4 to move downward and contact the ground to receive force, and making the vehicle body 1 suspended from the ground, thus facilitating the movement of the vehicle body using multiple universal wheels 4. The output end of the electric push rod 2 extends into the cavity 7 and is fixedly connected to the toothed block 12.

[0027] Please see Figure 2 and Figure 4A rectangular plate 13 is fixedly connected inside the cavity 7. The rectangular plate 13 is positioned above the second transmission belt 9. The toothed block 12 is slidably sleeved on the outside of the rectangular plate 13, thereby limiting the sliding of the toothed block 12 inside the cavity 7, improving the stability of the toothed block 12 during sliding. Furthermore, the top surface of the toothed block 12 is slidably connected to the inner top wall of the cavity 7, thereby achieving top sliding limitation of the toothed block 12 and further improving the stability of the toothed block 12 during sliding.

[0028] Please see Figure 3 The inner wall of the rectangular hole 3 is symmetrically provided with sliding grooves 5. A sliding block 18 is slidably connected inside the sliding groove 5. The cooperation between the sliding block 18 and the sliding groove 5 limits the lifting block 6 and improves the stability of the lifting block 6 when it is raised and lowered. The sliding block 18 is fixedly connected to the outer side of the lifting block 6. When the top surface of the sliding block 18 contacts the inner top wall of the sliding groove 5, the bottom height of the universal wheel 4 is lower than the bottom surface of the vehicle body 1. An anti-slip rubber pad is fixedly connected to the bottom surface of the vehicle body 1. The anti-slip rubber pad increases the stability of the vehicle body 1 when it is placed on the ground.

[0029] The implementation principle of this application embodiment is as follows: When it is necessary to move the vehicle body 1, the electric push rod 2 is controlled to drive the toothed block 12 to slide on the outside of the rectangular plate 13. The movement of the toothed block 12 drives the gear 17 to rotate. The rotation of the gear 17 drives the driving wheel 16, the third transmission belt 10, one of the second driven wheels 15 and one of the threaded rods 19 to rotate. The rotation of one of the threaded rods 19 cooperates with the action of multiple first driven wheels 14, multiple second driven wheels 15, two first transmission belts 8 and one second transmission belt 9 to make the four threaded rods 19 rotate synchronously. The rotation of the threaded rods 19 causes the lifting block 6, which is slidably connected inside the rectangular hole 3, to move downward, thereby driving the universal wheel 4 to move downward and contact the ground to receive force, and making the vehicle body 1 suspended on the ground, so as to facilitate the movement of the vehicle body using multiple universal wheels 4.

[0030] After moving to the destination, the electric push rod 2 is controlled to move the gear block 12, which in turn causes the gear 17 to reverse, thereby causing the lifting block 6 to drive the caster wheel 4 to move upward. When the bottom of the vehicle body 1 contacts the ground, the electric push rod 2 stops working, thus ensuring the stability of the vehicle body 1 during use.

[0031] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A fire service vehicle comprising a vehicle body (1), characterised in that: The inside of the vehicle body (1) is provided with a cavity (7), the bottom end face of the vehicle body (1) is provided with a rectangular hole (3) communicated with the cavity (7), the inside of the rectangular hole (3) is slidably connected with a lifting block (6), the inside top wall of the cavity (7) is rotatably connected with a threaded rod (19), and the lifting block (6) is threadedly sleeved on the outside of the threaded rod (19), the bottom side of the lifting block (6) is provided with a universal wheel (4), the outside of the threaded rod (19) is sequentially fixedly connected with a first driven wheel (14) and a second driven wheel (15) from top to bottom, the middle part of the cavity (7) is rotatably connected with a rotating shaft (11), the first driven wheels (14) adjacent to each other are connected through a first transmission belt (8), the second driven wheels (15) close to the left side of the vehicle body (1) are connected through a second transmission belt (9), the outside of the rotating shaft (11) is fixedly connected with a driving wheel (16), the driving wheel (16) and one of the second driven wheels (15) are connected through a third transmission belt (10), and the inside of the cavity (7) is provided with a driving assembly.

2. The aerial device of claim 1, wherein: The driving assembly comprises a gear (17) and a toothed block (12), the outside of the rotating shaft (11) is fixedly connected with the gear (17), the inside of the cavity (7) is slidably connected with the toothed block (12), and the outside of the vehicle body (1) is fixedly connected with an electric push rod (2).

3. The aerial device of claim 2, wherein: The gear (17) is arranged above the driving wheel (16), and the gear (17) and the toothed block (12) are in meshing transmission connection.

4. The aerial device of claim 2, wherein: The inside of the cavity (7) is fixedly connected with a rectangular plate (13), the rectangular plate (13) is arranged above the second transmission belt (9), and the toothed block (12) is slidably sleeved on the outside of the rectangular plate (13).

5. The aerial device of claim 1, wherein: The inside wall of the rectangular hole (3) is symmetrically provided with a sliding groove (5), and the inside of the sliding groove (5) is slidably connected with a sliding block (18), and the sliding block (18) is fixedly connected with the outside of the lifting block (6).

6. The aerial device of claim 1, wherein: The inside top wall of the cavity (7) is provided with a circular groove at four corners, a circular cylinder is rotatably connected in the circular groove, and the top end of the threaded rod (19) is fixedly connected with the bottom end face of the circular cylinder.

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