A platform vehicle positioning anti-falling device

Abstract

The utility model discloses a kind of loading and unloading platform vehicle positioning anti-falling devices, it is related to logistics storage equipment technical field.The device includes intermediate platform, positioning mechanism and locking mechanism set on intermediate platform;Positioning mechanism includes infrared sensor, motor, rotating shaft one and skid stopper, for when vehicle reaches specified position, automatically lifting skid stopper is positioned;Locking mechanism includes by single hydraulic cylinder driven first group of moving rack plate, with the gear of first group of moving rack plate meshing and rotationally connected, with the second group of moving rack plate of gear meshing, and locking disc respectively connected in the end of two moving rack plate.When hydraulic cylinder works.The utility model realizes the automatic accurate positioning and mandatory mechanical lock of vehicle parking by the synergistic effect of positioning and locking two sets of mechanisms, constitutes double security guarantee, effectively solve the security risk that vehicle is accidentally slipped due to unreliable parking, overall structure is compact, and safety reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of vehicle loading and unloading technology, and in particular to a vehicle positioning and anti-fall device for loading and unloading platforms. Background Technology

[0002] Loading and unloading platforms are key hubs for the rapid flow of goods in modern logistics, warehousing, and manufacturing enterprises, and their safety and operational efficiency are of paramount importance. In daily operations, freight vehicles need to reverse precisely and park in designated positions so that loading and unloading equipment (such as forklifts) can move smoothly between the vehicle's cargo box and the platform.

[0003] Currently, ensuring vehicle stability during loading and unloading primarily relies on the vehicle's own parking brake system (i.e., handbrake) and simple manual wheel stops (triangular wooden blocks or rubber blocks) placed by the operators. This method largely depends on the driver's operational standards and the sense of responsibility of the assistants, and its safety assurance capabilities have significant limitations.

[0004] Under prolonged or high-load conditions, a vehicle's parking brake system may experience mechanical fatigue or failure. This is especially true for heavy-duty trucks; when parked on a slightly inclined platform, a brake system failure can easily lead to a serious accident where the vehicle rolls backward. Manually placed wheel chocks not only add extra manual labor and reduce efficiency, but their position and tightness also depend entirely on manual judgment, making them prone to improper placement, insecurity, or accidental displacement. Their passive blocking effect is insufficient to withstand the significant impact of unexpected vehicle movement.

[0005] Therefore, existing technologies generally lack an automated device that can combine precise vehicle positioning with a mandatory mechanical locking function, and cannot fundamentally eliminate the safety risks to personnel, goods and equipment caused by unreliable vehicle parking.

[0006] Therefore, this utility model proposes a vehicle positioning and anti-fall device for loading and unloading platforms to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the existing technology, the lack of automatic and accurate positioning capabilities and independent and mandatory anti-slip locking mechanisms of loading and unloading platforms when vehicles are parked, which leads to safety hazards such as accidental vehicle movement causing cargo to fall or personal injury, this utility model aims to provide a loading and unloading platform vehicle positioning and anti-fall device with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a vehicle positioning and anti-fall device for a loading and unloading platform, including an intermediate platform, a positioning mechanism and a locking mechanism disposed on or inside the intermediate platform.

[0009] The positioning mechanism includes an infrared sensor mounted on the intermediate platform, a motor connected to the infrared sensor by electrical signal, a rotating shaft fixedly connected to the output shaft of the motor, and an anti-slip device fixedly connected to the rotating shaft.

[0010] The locking mechanism includes a pair of fixed shafts, a first fixed shaft and a second fixed shaft, which are parallel and fixed inside the intermediate platform; two sets of movable rack plates, the first set and the second set of movable rack plates being slidably connected to the fixed shafts; a rotating shaft, a second rotating shaft, which is rotatably connected inside the intermediate platform, and a gear fixed on the rotating shaft, which meshes with both the first set of movable rack plates and the second set of movable rack plates; a hydraulic cylinder, the output end of which is fixedly connected to the first set of movable rack plates via a connecting plate; and connecting plates, a second connecting plate, which are respectively connected to the ends of the first set of movable rack plates and the second set of movable rack plates, each connecting plate, a locking disc for clamping the wheel from both sides, is fixed on it.

[0011] The core innovation of the locking mechanism lies in its symmetrical linkage structure. A single hydraulic cylinder drives the first set of moving rack plates to generate linear motion. This motion is converted by gears that mesh simultaneously with the first and second sets of moving rack plates, precisely driving the second set of moving rack plates to generate synchronous and opposite linear motion. The first and second sets of moving rack plates, as a whole moving component, form a sliding fit with the fixed shaft one and fixed shaft two, which serve as guide rails. Finally, they are connected to the locking disc through the connecting plates at their respective ends, thereby converting a single power input into a synchronous, stable, and powerful clamping force on both sides of the wheel.

[0012] Preferably, when the hydraulic cylinder drives the first set of moving rack plates to move, the second set of moving rack plates is driven to move synchronously in the opposite direction through the meshing transmission of gears, thereby driving the locking discs connected to the first and second sets of moving rack plates to achieve synchronous clamping or release of the wheel.

[0013] Preferably, the positioning mechanism includes two sets, which are respectively set at the front and rear ends of the intermediate platform, and the anti-slip device is used to block the front and rear tires of the vehicle respectively.

[0014] Preferably, when the positioning mechanism is not in operation, the anti-slip device can be housed inside the intermediate platform by rotating the first rotating shaft, so that the surface of the intermediate platform can be restored to flatness.

[0015] Preferably, the vehicle positioning and anti-fall device for the loading and unloading platform also includes a cover plate that is detachably covered over the opening of the intermediate platform and located above the gear and moving rack plate in the locking mechanism, to prevent debris from entering and to facilitate maintenance.

[0016] Preferably, one end of the intermediate platform is integrally formed or fixedly connected to a ramp for vehicles to drive into.

[0017] Preferably, both the first set of movable rack plates and the second set of movable rack plates are provided with through holes that slide with the first fixed shaft and the second fixed shaft.

[0018] Preferably, the anti-skid device includes an arc-shaped baffle for blocking the wheel, and a reinforcing plate vertically connected to the back of the arc-shaped baffle.

[0019] Preferably, the gear teeth and the racks of the first and second sets of movable rack plates are all involute tooth profiles.

[0020] Preferably, the hydraulic cylinder is horizontally positioned inside the intermediate platform, and the connecting plate is a flat plate structure, with one end face fixedly connected to the output end of the hydraulic cylinder and the other end face fixedly connected to one end of the first set of movable rack plates.

[0021] This utility model has the following beneficial effects: 1. This utility model solves the problems of low positioning accuracy and low efficiency in the prior art when vehicles are parked on loading and unloading platforms by setting up a positioning mechanism that automatically detects the vehicle position by an infrared sensor and drives a motor to raise a retractable anti-slip device for limiting the position. It achieves the technical effect of automatic sensing and precise positioning, and improves the standardization and safety of loading and unloading operations.

[0022] 2. This utility model, by setting up a locking mechanism driven by a single hydraulic cylinder, which drives the locking discs on both sides to synchronously clamp the wheels through gear and double moving rack plates, solves the problem that vehicles rely solely on their own handbrakes for braking, which may cause accidental slippage due to handbrake failure or ground tilt, thus leading to the risk of cargo falling and personal injury. It achieves the technical effect of applying independent, forced and reliable mechanical locking to the wheels, fundamentally eliminating the possibility of accidental vehicle movement.

[0023] 3. This utility model, by coordinating the positioning mechanism and the locking mechanism, forms a dual safety guarantee of positioning before locking. The main mechanical structure is built into the middle platform and protected by a cover plate. This solves the problems of existing safety measures being singular and unreliable, and the mechanical devices being exposed and easily damaged by the environment, affecting the use of the platform. It achieves the technical effect of compact structure, high safety redundancy and strong reliability, while protecting the core components and extending the service life of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a vehicle positioning and anti-fall device for a loading and unloading platform proposed in this utility model; Figure 2 This is a schematic diagram of the anti-slip device of a vehicle positioning and anti-fall device for a loading and unloading platform proposed in this utility model; Figure 3This is a schematic diagram of the gear structure of a vehicle positioning and anti-fall device for a loading and unloading platform proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0025] Legend: 1. Slope; 2. Intermediate platform; 3. Cover plate; 4. Positioning mechanism; 41. Infrared sensor; 42. Rotating shaft one; 43. Anti-slip device; 44. Motor; 5. Locking mechanism; 51. Hydraulic cylinder; 52. Connecting plate one; 53. Moving rack plate; 54. Gear; 55. Rotating shaft two; 56. Fixed shaft one; 57. Fixed shaft two; 58. Connecting plate two; 59. Locking disc. Detailed Implementation Example

[0026] Please refer to Figures 1 to 4 This utility model provides a vehicle positioning and anti-fall device for loading and unloading platforms, which aims to solve the problem that existing loading and unloading platforms lack automatic and accurate positioning capabilities and independent and mandatory anti-slip locking mechanisms when vehicles are parked, resulting in inaccurate vehicle positioning affecting loading and unloading efficiency, as well as safety hazards such as goods falling or personnel injury caused by accidental vehicle movement.

[0027] like Figure 1 As shown, the vehicle positioning and anti-fall device of the loading and unloading platform includes an intermediate platform 2. One end of the intermediate platform 2 is integrally formed or fixedly connected to a ramp 1 for vehicles to drive into. The device also includes a positioning mechanism 4 and a locking mechanism 5 set on or inside the intermediate platform 2. Reference Figure 1 and Figure 2 The positioning mechanism 4 is used to achieve precise positioning of the vehicle. It includes an infrared sensor 41 installed on the intermediate platform 2, a motor 44 electrically connected to the infrared sensor 41, a rotating shaft 42 fixedly connected to the output shaft of the motor 44, and an anti-slip device 43 fixedly connected to the rotating shaft 42. The infrared sensor 41 detects the vehicle position and triggers the motor 44 to work. The motor 44 drives the rotating shaft 42 to rotate, thereby causing the anti-slip device 43 to rise or fall.

[0028] Reference Figure 1 , Figure 3 and Figure 4The locking mechanism 5 is used to lock the wheels after the vehicle is positioned. It is entirely housed inside the intermediate platform 2. The locking mechanism 5 includes a pair of fixed shafts 56 and 57, which are parallel and fixed inside the intermediate platform 2. The fixed shafts 56 and 57 together form a guide rail. The locking mechanism 5 also includes two sets of movable rack plates 53, both of which are slidably connected to the fixed shafts 56 and 57. The locking mechanism 5 further includes a rotating shaft 55 rotatably connected inside the intermediate platform 2. A gear 54 is fixed on the rotating shaft 55, and the gear 54 meshes with both the first and second sets of movable rack plates 53. A hydraulic cylinder 51 is horizontally positioned inside the intermediate platform 2. The output end is fixedly connected to the first set of movable rack plates 53 via a connecting plate 52. The connecting plate 52 is a flat plate structure, with one end face fixedly connected to the output end of the hydraulic cylinder 51 and the other end face fixedly connected to one end of the first set of movable rack plates 53. The locking mechanism 5 also includes a connecting plate 58 connected to the ends of the first set of movable rack plates 53 and the second set of movable rack plates 53 respectively. Each connecting plate 58 is fixed with a locking disc 59 for clamping the wheel from both sides, thus forming a complete structure driven by a single power source and achieving symmetrical clamping through the transmission of gear 54 and movable rack plates 53. In the locking mechanism 5, a cover plate 3 is also provided above the gear 54 and movable rack plates 53. The cover plate 3 is detachably covered on the opening of the intermediate platform 2.

[0029] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The core structure of the locking mechanism 5 will be described in detail below: The motion guide structure of the locking mechanism 5 consists of a fixed shaft 1 56 and a fixed shaft 2 57. The fixed shaft 1 56 and the fixed shaft 2 57 are fixedly connected in parallel to the inner bottom surface of the intermediate platform 2, providing a stable and precise motion track for subsequent moving parts. The first set of movable rack plates 53 and the second set of movable rack plates 53 are the core transmission and execution components. They have the same structure or are mirror images of each other. Both have through holes that slide with the fixed shaft 1 56 and the fixed shaft 2 57. In the assembled state, the first set of movable rack plates 53 and the second set of movable rack plates 53 slide onto the fixed shaft 1 56 and the fixed shaft 2 57 through their own through holes, respectively, ensuring the high stability and anti-deflection ability of the two movable rack plates 53 during the movement. The motion conversion core of the locking mechanism 5 is the gear 54. The gear 54 is fixedly connected to the rotating shaft 2 55. The two ends of the rotating shaft 2 55 are rotatably connected to the inner sidewall of the intermediate platform 2, so that the gear 54 can rotate stably around its own axis. The teeth of the gear 54 and the racks of the first and second sets of moving rack plates 53 are all involute teeth. After installation, the gear 54 simultaneously meshes with the first set of moving rack plates 53 and the second set of moving rack plates 53 that are arranged opposite to each other. The power input of the locking mechanism 5 is provided by the hydraulic cylinder 51. The cylinder body of the hydraulic cylinder 51 is fixed inside the intermediate platform 2. Its output end is fixedly connected to one end of the first set of moving rack plates 53 through the connecting plate 52. When the hydraulic cylinder 51 works, its output linear motion is accurately transmitted to the first set of moving rack plates 53. The final actuating end of the locking mechanism 5 is the locking disc 59. The locking disc 59 is fixedly connected to the ends of the first set of moving rack plates 53 and the second set of moving rack plates 53 away from the hydraulic cylinder 51 through the connecting plate 2 58. This symmetrical structure ensures that the locking discs 59 on both sides can move synchronously when the first set of moving rack plates 53 and the second set of moving rack plates 53 move.

[0030] As a preferred layout, the positioning mechanism 4 includes two sets, which are respectively set at the front and rear ends of the intermediate platform 2, so that after the vehicle stops, the two sets of anti-slip devices 43 can be used to block the front and rear tires of the vehicle respectively, thereby achieving bidirectional restriction of the vehicle. As a further limitation on the functional state of the positioning mechanism 4, when the positioning mechanism 4 is not in operation, the anti-slip device 43 can be flipped and housed inside the intermediate platform 2 by the reverse rotation of the rotating shaft 42. At this time, the top surface of the anti-slip device 43 is flush with the surface of the intermediate platform 2, so that the surface of the intermediate platform 2 is restored to flatness and does not affect the passage of the vehicle. Reference Figure 2 In order to improve the structural strength and blocking effect of the anti-skid device 43, the structure of the anti-skid device 43 specifically includes an arc-shaped baffle for blocking the wheel, and a reinforcing plate vertically connected to the back of the arc-shaped baffle. The arc surface of the arc-shaped baffle is used to fit the wheel and disperse the impact force, while the reinforcing plate improves the overall bending resistance. In order to protect the locking mechanism 5 and facilitate maintenance, the device also includes a cover plate 3, which is detachably covered over the opening reserved in the intermediate platform 2 and located above the gear 54 and the first and second sets of moving rack plates 53 in the locking mechanism 5. This effectively prevents dust and debris from entering and affecting the meshing transmission, and also facilitates the lubrication and maintenance of the internal mechanism. To facilitate the smooth entry of vehicles into the intermediate platform 2, one end of the intermediate platform 2 is integrally formed or fixedly connected to a ramp 1 for vehicles to enter. To ensure the smooth movement and accurate guidance of the first set of moving rack plates 53 and the second set of moving rack plates 53, both sets of moving rack plates 53 and the second set of moving rack plates 53 are provided with through holes that slide with the first fixed shaft 56 and the second fixed shaft 57. The inner wall of the through hole slides in close contact with the outer circumferential surface of the first fixed shaft 56 and the second fixed shaft 57. To ensure the smoothness and efficiency of meshing transmission, refer to Figure 4 The teeth of gear 54 and the racks of the first and second sets of moving rack plates 53 are all involute teeth. In order to achieve efficient linear driving force transmission, the hydraulic cylinder 51 is horizontally set inside the intermediate platform 2. The connecting plate 52 is a flat plate structure, with one end face fixedly connected to the output end of the hydraulic cylinder 51 and the other end face fixedly connected to one end of the first set of moving rack plates 53, ensuring that the thrust output by the hydraulic cylinder 51 can be transmitted to the rack plate without loss.

[0031] The working principle is as follows: When the vehicle travels from the ramp 1 to the designated loading / unloading position on the intermediate platform 2, the infrared sensor 41 detects the vehicle and sends a signal. The motor 44 receives the signal and starts, driving the rotating shaft 42, which is fixedly connected to its output shaft, to rotate. The anti-slip device 43, which is fixed on the rotating shaft 42, flips from inside the intermediate platform 2 to the working state, blocking the front and rear directions of the vehicle tires and achieving precise positioning.

[0032] After the vehicle is positioned, the locking mechanism 5 is activated, the output end of the hydraulic cylinder 51 extends, and pushes the connecting plate 52 fixedly connected to it. The connecting plate 52 then drives the first set of moving rack plates 53 to move along the track formed by the fixed shaft 56 and the fixed shaft 57. During the movement, the first set of moving rack plates 53 meshes with the drive gear 54 to rotate around the rotating shaft 55. Since the gear 54 meshes with the second set of moving rack plates 53 at the same time, the rotation of the gear 54 drives the second set of moving rack plates 53 to move synchronously in opposite directions along the fixed shaft 56 and the fixed shaft 57. Finally, the locking discs 59 connected to the first set of moving rack plates 53 and the second set of moving rack plates 53 respectively through the connecting plate 58 achieve synchronous opposite movement, clamping and locking the wheels from both sides, completely preventing the vehicle from slipping. Throughout the process, the cover plate 3 covers the locking mechanism 5 to prevent debris from affecting its operation.

[0033] After the loading and unloading operation is completed, the motor 44 and the hydraulic cylinder 51 move in opposite directions. The hydraulic cylinder 51 retracts and drives the two locking discs 59 to separate synchronously, releasing the wheels from locking. The motor 44 drives the anti-slip device 43 to retract into the middle platform 2, and the vehicle can then safely drive away.

Claims

1. A vehicle positioning and anti-fall device for a loading and unloading platform, comprising an intermediate platform (2), characterized in that, The device also includes a positioning mechanism (4) and a locking mechanism (5) disposed on or inside the intermediate platform (2). The positioning mechanism (4) includes an infrared sensor (41) mounted on the intermediate platform (2), a motor (44) electrically connected to the infrared sensor (41), a rotating shaft (42) fixedly connected to the output shaft of the motor (44), and an anti-slip device (43) fixedly connected to the rotating shaft (42). The locking mechanism (5) includes: a pair of fixed shafts 1 (56) and 2 (57) fixed in parallel inside the intermediate platform (2); two sets of movable rack plates (53), the first set and the second set of movable rack plates (53) being slidably connected to the fixed shafts 1 (56) and 2 (57); a rotating shaft 2 (55) rotatably connected inside the intermediate platform (2), the rotating shaft 2 (55) being fixed with gears (54) that mesh with the first set of movable rack plates (53) and the second set of movable rack plates (53); a hydraulic cylinder (51), the output end of which is fixedly connected to the first set of movable rack plates (53) via a connecting plate 1 (52); and connecting plates 2 (58) respectively connected to the ends of the first set of movable rack plates (53) and the second set of movable rack plates (53), each of the multiple connecting plates 2 (58) being fixed with a locking disc (59) for clamping the wheel from both sides.

2. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, When the hydraulic cylinder (51) drives the first set of moving rack plates (53) to move, the second set of moving rack plates (53) is driven to move synchronously in opposite directions through the meshing transmission of the gear (54), thereby driving the locking disc (59) connected to the first set and the second set of moving rack plates (53) to achieve synchronous clamping or release of the wheel.

3. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, The positioning mechanism (4) includes two sets, which are respectively set at the front and rear ends of the intermediate platform (2), and the anti-slip device (43) is used to block the front and rear tires of the vehicle respectively.

4. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, When the positioning mechanism (4) is not in operation, the anti-slip device (43) can be rotated and housed inside the intermediate platform (2) by the rotation of the rotating shaft (42), so that the surface of the intermediate platform (2) is restored to flatness.

5. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, The device also includes a cover plate (3) that is detachably covered over the opening of the intermediate platform (2) and located above the gear (54) and the movable rack plate (53) in the locking mechanism (5).

6. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, One end of the intermediate platform (2) is integrally formed or fixedly connected to a ramp (1) for vehicles to drive into.

7. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, Both the first set of movable rack plates (53) and the second set of movable rack plates (53) have through holes that slide with the first fixed shaft (56) and the second fixed shaft (57).

8. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, The anti-skid device (43) includes an arc-shaped baffle for blocking the wheel and a reinforcing plate vertically connected to the back of the arc-shaped baffle.

9. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, The teeth of the gear (54) and the racks of the first and second sets of movable rack plates (53) are all involute teeth.

10. The vehicle positioning and anti-fall device for loading and unloading platforms according to claim 1, characterized in that, The hydraulic cylinder (51) is horizontally arranged inside the intermediate platform (2). The connecting plate (52) is a flat plate structure. One end face of the plate is fixedly connected to the output end of the hydraulic cylinder (51), and the other end face is fixedly connected to one end of the first set of moving rack plates (53).

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