Movable gantry truss capable of stably ascending and descending

Abstract

The utility model discloses a stable lifting movable gantry truss which comprises a support, movable seats are fixedly installed at the two ends of the bottom of the support, a sliding plate is arranged on the inner side wall of the support in a sliding mode, an electric hoist is arranged on the bottom wall of the sliding plate, and a pull-up piece is arranged between the sliding plate and the top of the support. Rolling wheels are arranged at the two ends of the bottom of the movable base, and a positioning piece is arranged in the middle of the movable base. The utility model belongs to the technical field of gantry trusses, and particularly relates to a movable gantry truss capable of ascending and descending stably.

Description

Technical Field

[0001] This utility model belongs to the field of gantry truss technology, specifically referring to a mobile gantry truss that can be raised and lowered smoothly. Background Technology

[0002] Gantry trusses are a common material lifting and transfer equipment, widely used in factory workshops, warehouses, construction sites and other places for hoisting heavy objects or performing positioning operations.

[0003] Traditional gantry trusses are generally divided into two main categories: fixed and mobile. While fixed gantry trusses are structurally stable, they lack flexibility and are difficult to adapt to changes in work position. Mobile gantry trusses, on the other hand, solve the problem of position movement. After moving to the target position, they mainly rely on simple mechanical locking (such as pins) or self-weight friction braking, but they are prone to swaying, which affects operational safety. Utility Model Content

[0004] The technical problem this invention aims to solve is that fixed gantry cranes lack flexibility and are difficult to adapt to changes in work position, while mobile gantry cranes are prone to swaying, affecting operational safety.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a mobile gantry truss with smooth lifting and lowering, including a support frame, with a movable seat fixedly installed at both ends of the bottom of the support frame, a sliding plate slidably provided on the inner side wall of the support frame, an electric hoist provided on the bottom wall of the sliding plate, a lifting member provided between the sliding plate and the top of the support frame, rollers provided at both ends of the bottom of the movable seat, and a positioning member provided in the middle of the movable seat.

[0006] Preferably, two opposing ribs are installed between the top wall of the movable seat and the bracket, and a connecting plate is provided between the ribs, with the bottom end of the bracket fixed to the connecting plate.

[0007] Preferably, the positioning component includes a positioning plate and a hydraulic cylinder. The fixed end of the hydraulic cylinder is fixed to the connecting plate, and the movable end of the hydraulic cylinder slides through the movable seat and extends out. The positioning plate is fixed to the movable end of the hydraulic cylinder, and a limiting rod that slides through the movable seat is fixed on the positioning plate.

[0008] Preferably, the lifting component includes a steel rope, the top wall of the support has a through hole, the top wall of the support has a support plate, a rotating shaft is rotatably mounted on the support plate, a take-up roller is fixedly sleeved on the rotating shaft, one end of the steel rope is fixed on the slide plate, the other end of the steel rope passes through the through hole and is wound on the take-up roller, and the support plate is provided with a power component to drive the rotating shaft to rotate.

[0009] Preferably, the power component includes a worm gear, a worm, and a drive motor. A support plate is fixedly provided on the top of the bracket. The two ends of the worm are rotatably mounted on the support plate. The shaft of the worm gear rotatably passes through the support plate and is connected to the rotating shaft. The worm gear and the worm are connected in a cooperative manner. The drive motor is located on the side wall of the support plate. The output end of the drive motor rotatably passes through the support plate and is connected to the rotating shaft.

[0010] Preferably, the bottom wall of the slide plate is provided with a linear slide rail, and the electric hoist is mounted on the slide block of the linear slide rail.

[0011] Preferably, the inner sidewall of the bracket is provided with a guide rail, and the two ends of the slide plate are slidably disposed on the guide rail.

[0012] The beneficial effects achieved by adopting the above-described structure are as follows:

[0013] 1. The positioning components (positioning plate and limit rod) are driven by a hydraulic cylinder located in the middle of the moving seat. When a fixed position is required, the hydraulic cylinder extends and drives the positioning plate to press down on the ground forcefully. Combined with the limit rod, it prevents deflection and provides strong, stable and reliable active support and locking force for the entire gantry frame. This significantly overcomes the instability of traditional mobile gantry frames that rely on friction or simple mechanical locking, reduces accidental movement or shaking during hoisting operations, and improves operational safety.

[0014] 2. The steel rope winch is used as the lifting drive (lifting component), combined with worm gear transmission (power component), which realizes the smooth lifting of the slide plate and electric hoist. When the drive motor stops working, the worm can effectively prevent the worm wheel (and thus prevent the winding roller) from reversing, automatically locking the position of the slide plate to prevent it from falling accidentally under load, which greatly improves the safety of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 3 ;

[0018] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 4 .

[0019] Among them, 1. bracket, 2. movable seat, 3. sliding plate, 4. electric hoist, 5. lifting component, 6. roller, 7. positioning component, 8. rib plate, 9. connecting plate, 10. positioning plate, 11. hydraulic cylinder, 12. steel rope, 13. through hole, 14. support plate, 15. rotating shaft, 16. winding roller, 17. power component, 18. worm gear, 19. worm, 20. drive motor, 21. support plate, 22. linear slide rail, 23. guide rail, 24. limit rod. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figure 1-4 As shown, this utility model proposes a mobile gantry truss with smooth lifting and lowering, including a support 1. The inner side wall of the support 1 is provided with a guide rail 23. The two ends of the sliding plate 3 are slidably mounted on the guide rail 23. The two ends of the bottom of the support 1 are fixedly installed with a movable seat 2. The inner side wall of the support 1 is slidably provided with a sliding plate 3. The bottom wall of the sliding plate 3 is provided with an electric hoist 4. The bottom wall of the sliding plate 3 is provided with a linear slide rail 22. The electric hoist 4 is mounted on the slide seat of the linear slide rail 22. A lifting member 5 is provided between the sliding plate 3 and the top of the support 1. The bottom ends of the movable seat 2 are provided with rollers 6. The middle of the movable seat 2 is provided with a positioning member 7. The support 1 can be moved by the rollers 6 at the bottom of the movable seat 2, and the position of the support 1 can be positioned by the positioning member 7 to avoid shaking due to the rollers 6. The goods can be lifted by the electric hoist 4, and the height of the sliding plate 3 can be adjusted by the lifting member 5, which can adjust the initial height of the electric hoist 4.

[0023] like Figure 2 As shown, two opposing ribs 8 are installed between the top wall of the movable seat 2 and the bracket 1, and a connecting plate 9 is provided between the ribs 8. The bottom end of the bracket 1 is fixed on the connecting plate 9.

[0024] like Figure 2 As shown, the positioning component 7 includes a positioning plate 10 and a hydraulic cylinder 11. The fixed end of the hydraulic cylinder 11 is fixed on the connecting plate 9, and the movable end of the hydraulic cylinder 11 slides through the movable seat 2 and extends out. The positioning plate 10 is fixed on the movable end of the hydraulic cylinder 11, and a limiting rod 24 that slides through the movable seat 2 is fixed on the positioning plate 10. When the hydraulic cylinder 11 extends out, it can drive the positioning plate 10 to move down and support the roller 6 to prevent the movable seat 2 from shaking.

[0025] like Figure 3-4 As shown, the lifting component 5 includes a steel rope 12. The top wall of the support 1 is provided with a through hole 13 and a support plate 14. A rotating shaft 15 is rotatably mounted on the support plate 14. A take-up roller 16 is fixedly sleeved on the rotating shaft 15. One end of the steel rope 12 is fixed to the slide plate 3, and the other end of the steel rope 12 passes through the through hole 13 and is wound around the take-up roller 16. The support plate 14 is provided with a power component 17 that drives the rotating shaft 15 to rotate. When the power component 17 drives the rotating shaft 15 to rotate, the take-up roller 16 winds up the steel rope 12, thereby lifting the slide plate 3.

[0026] like Figure 4 As shown, the power component 17 includes a worm gear 18, a worm 19, and a drive motor 20. A support plate 21 is fixedly provided on the top of the bracket 1. The two ends of the worm 19 are rotatably mounted on the support plate 21. The shaft of the worm gear 18 rotatably passes through the support plate 14 and is connected to the rotating shaft 15. The worm gear 18 and the worm 19 are connected in a cooperative manner. The drive motor 20 is located on the side wall of the support plate 21. The output end of the drive motor 20 rotatably passes through the support plate 21 and is connected to the rotating shaft 15. When the drive motor 20 is started, the worm 19 is driven to rotate. The worm 19 drives the worm gear 18 to rotate. The worm gear 18 drives the rotating shaft 15 to rotate.

[0027] In practical use, the operator pushes or uses other traction methods (such as a small tractor) to act on the gantry truss support 1, so that the entire equipment can be moved to the target work area on the workshop or site ground via the rollers 6 at the bottom of the moving seat 2.

[0028] Upon reaching the predetermined position, the hydraulic cylinder 11 is activated, extending its movable end to push the positioning plate 10 downwards. Simultaneously, the limiting rod 24 slides through the moving seat 2, ultimately pressing the positioning plate 10 firmly onto the ground to form a stable support. The limiting rod 24 prevents the positioning plate 10 from rotating under pressure. At this time, the powerful downward pressure and friction provided by the hydraulic cylinder 11, combined with the contact between the positioning plate 10 and the ground, firmly lock the moving seat 2 and the entire gantry frame in their current position, preventing movement.

[0029] Turn on the drive motor 20. The drive motor 20 drives the worm gear 19 connected to its output end to rotate. The worm gear 19 drives the worm wheel 18 that meshes with it to rotate. The worm wheel 18 drives the rotating shaft 15 and the take-up roller 16 fixed on the rotating shaft 15 to rotate synchronously through its shaft. One end of the steel rope 12 is fixed on the slide plate 3, and the other end passes through the through hole 13 on the top wall of the bracket 1 and is wound on the take-up roller 16. When the take-up roller 16 rotates to wind up the steel rope 12, the steel rope 12 pulls the slide plate 3 upward. The slide plate 3 slides smoothly upward along the guide rail 23 on the inner side wall of the bracket 1 to achieve upward movement.

[0030] When descent is required, the drive motor 20 reverses, the take-up roller 16 releases the steel rope 12, and the slide plate 3 descends smoothly along the guide rail 23 under its own weight (and load). The self-locking characteristics of the worm gear 18 and worm 19 ensure that when the motor stops, the slide plate 3 can stop immediately and remain in the current position to prevent it from falling.

[0031] After the slide plate 3 is raised to a suitable height, the electric hoist 4 is operated to perform hooking, lifting, lateral movement and unloading operations of the materials.

[0032] After completing the current work, the hydraulic cylinder 11 of the control positioning component 7 retracts to its movable end, lifting the positioning plate 10 and the limit rod 24 off the ground. After unlocking, the gantry truss can be pushed again and moved to the next work position via the rollers 6, repeating the above positioning, lifting and hoisting process.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A mobile gantry truss for smooth lifting, characterized by: The bracket (1) includes a support frame (1), with movable seats (2) fixedly installed at both ends of the bottom of the support frame (1). A sliding plate (3) is provided on the inner side wall of the support frame (1). An electric hoist (4) is provided on the bottom wall of the sliding plate (3). A lifting member (5) is provided between the sliding plate (3) and the top of the support frame (1). Rollers (6) are provided at both ends of the bottom of the movable seat (2). A positioning member (7) is provided in the middle of the movable seat (2).

2. A mobile gantry truss with smooth lifting according to claim 1, characterized in that: Two opposing ribs (8) are installed between the top wall of the movable seat (2) and the bracket (1), and a connecting plate (9) is provided between the ribs (8). The bottom end of the bracket (1) is fixed on the connecting plate (9).

3. A mobile gantry truss with smooth lifting according to claim 1, characterized in that: The positioning component (7) includes a positioning plate (10) and a hydraulic cylinder (11). The fixed end of the hydraulic cylinder (11) is fixed on the connecting plate (9). The movable end of the hydraulic cylinder (11) slides through the moving seat (2) and extends out. The positioning plate (10) is fixed on the movable end of the hydraulic cylinder (11). A limiting rod (24) that slides through the moving seat (2) is fixed on the positioning plate (10).

4. A mobile gantry truss with smooth lifting according to claim 1, characterized in that: The lifting component (5) includes a steel rope (12). The top wall of the support (1) is provided with a through hole (13). The top wall of the support (1) is provided with a support plate (14). A rotating shaft (15) is rotatably provided on the support plate (14). A take-up roller (16) is fixedly sleeved on the rotating shaft (15). One end of the steel rope (12) is fixed on the slide plate (3). The other end of the steel rope (12) passes through the through hole (13) and is wound on the take-up roller (16). A power component (17) is provided on the support plate (14) to drive the rotating shaft (15) to rotate.

5. A mobile gantry truss with smooth lifting according to claim 4, characterized in that: The power component (17) includes a worm gear (18), a worm (19), and a drive motor (20). A support plate (21) is fixedly provided on the top of the bracket (1). The two ends of the worm (19) are rotatably mounted on the support plate (21). The shaft of the worm gear (18) rotatably passes through the support plate (14) and is connected to the rotating shaft (15). The worm gear (18) and the worm (19) are connected in cooperation. The drive motor (20) is located on the side wall of the support plate (21). The output end of the drive motor (20) rotatably passes through the support plate (21) and is connected to the rotating shaft (15).

6. A mobile gantry truss with smooth lifting according to claim 1, characterized in that: The bottom wall of the slide plate (3) is provided with a linear slide rail (22), and the electric hoist (4) is mounted on the slide seat of the linear slide rail (22).

7. A mobile gantry truss with smooth lifting according to claim 1, characterized in that: The inner wall of the bracket (1) is provided with a guide rail (23), and the two ends of the slide plate (3) are slidably mounted on the guide rail (23).

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