A high-gantry-shaking-amount test anti-falling device

Abstract

The utility model discloses a kind of high gan swing quantity test's anti-falling device of goods, it is related to fork truck swing test technical field, including lower guardrail assembly, upper guardrail assembly, protective platform and the power mechanism for driving protective platform movement on upper guardrail assembly;The bottom of upper guardrail assembly is set to the upper portion of lower guardrail assembly, protective platform is slidably connected with upper guardrail assembly, and protective platform is set to the lower portion of load goods fork under goods;The power mechanism includes motor assembly, lower driven wheel assembly, upper driven wheel assembly and chain assembly;The output end of motor assembly is equipped with driving wheel, driving wheel is engaged with lower driven wheel in lower driven wheel assembly, lower driven wheel assembly and upper driven wheel assembly are respectively set to the lower portion and upper portion of upper guardrail assembly, chain assembly is connected head to tail after and respectively engaged with lower driven wheel assembly, upper driven wheel assembly to form chain type conveying mechanism;The anti-falling device of goods, the safety protection of fork truck high gan swing quantity test is realized.

Description

Technical Field

[0001] This utility model relates to the field of forklift sway testing technology, and in particular to a device for preventing cargo from falling during high mast sway testing. Background Technology

[0002] When reach trucks move forward and backward and lift and lower, the higher the mast is lifted, the greater the amount of mast sway when it reaches the top. Large sway can pose a danger to handling operations. Therefore, existing technologies use multiple forklift stability tests to obtain the amount of sway at different mast lifting heights. However, during the sway test, goods are prone to falling, causing cargo accidents and personnel safety accidents. Utility Model Content

[0003] Based on the technical problems existing in the background technology, this utility model proposes a device to prevent goods from falling during the high mast sway test, so as to achieve safety protection during the high mast sway test of forklifts.

[0004] This utility model proposes a cargo fall prevention device for testing the sway of a high gantry, comprising a lower guardrail assembly, an upper guardrail assembly, a protective platform, and a power mechanism for driving the protective platform to move on the upper guardrail assembly;

[0005] The bottom of the upper guardrail assembly is located above the lower guardrail assembly. The protective platform is slidably connected to the upper guardrail assembly and is located under the forks carrying the goods.

[0006] Furthermore, the power mechanism includes a motor assembly, a lower driven wheel assembly, an upper driven wheel assembly, and a chain assembly;

[0007] The output end of the motor assembly is fitted with a drive wheel, which meshes with the lower driven wheel in the lower driven wheel assembly. The lower driven wheel assembly and the upper driven wheel assembly are respectively located at the lower and upper parts of the upper guardrail assembly. The chain assembly is connected end to end and meshes with the lower driven wheel assembly and the upper driven wheel assembly to form a chain conveyor mechanism. The protective platform is fixedly connected to the chain assembly.

[0008] Furthermore, a lower proximity switch assembly is provided at the bottom of the upper guardrail assembly to control the upward movement of the protective platform driven by the power mechanism.

[0009] An upper proximity switch assembly is located in the upper middle part of the upper guardrail assembly to detect when the forks have been raised to the highest safe position of the upper guardrail assembly.

[0010] Furthermore, a laser sensor is provided on the top of the upper guardrail assembly.

[0011] Furthermore, the protective platform includes a fixing plate, and three fixing plates are spliced ​​together to form a U-shaped structure. The fixing plate at the bottom of the U-shaped structure is fixedly connected to the chain assembly.

[0012] Furthermore, the height of the lower guardrail assembly is the height of the lowest gantry, while the height of the upper guardrail assembly is greater than the total height of the highest gantry and the stacked cargo.

[0013] The advantages of the anti-cargo-fall device for testing the sway of a high gantry provided by this utility model are as follows: A protective platform is set under the forks carrying cargo to catch the cargo that falls due to swaying, thus avoiding safety problems or other accidents. At the same time, in order to match the vertical movement height of the forks and avoid the protective platform being unable to stably catch the falling cargo due to an excessive distance between the forks and the protective platform, the protective platform is set to move vertically to adjust the distance between the forks and the protective platform, thereby ensuring that the falling cargo can be stably caught while minimizing damage to the falling cargo. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the high gantry railing.

[0016] Among them, 1-lower guardrail assembly, 2-upper guardrail assembly, 3-protective platform, 4-power mechanism, 5-lower proximity switch assembly, 6-upper proximity switch assembly, 7-laser sensor, 31-fixed plate, 41-motor assembly, 42-lower driven wheel assembly, 43-upper driven wheel assembly, 44-chain assembly. Detailed Implementation

[0017] The technical solution of this utility model will now be described in detail through specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] like Figure 1 and 2 As shown, the present invention proposes a cargo fall prevention device for testing the sway of a high gantry, comprising a lower guardrail assembly 1, an upper guardrail assembly 2, a protective platform 3, and a power mechanism 4 for driving the protective platform 3 to move on the upper guardrail assembly 2.

[0019] The bottom of the upper guardrail assembly 2 is located above the lower guardrail assembly 1. The protective platform 3 is slidably connected to the upper guardrail assembly 2 and is located under the forks carrying goods.

[0020] In this embodiment, the height of the lower guardrail assembly 1 is the height of the lowest mast, and the height of the upper guardrail assembly 2 is greater than the total height of the highest mast and the stacked cargo. This provides fall protection for the mast as it is raised and lowered to different positions. The lower guardrail assembly 1 and the upper guardrail assembly 2 form a three-sided enclosure structure. An additional opening without enclosure is reserved for the forklift mast to enter and exit. The forklift driver's cab is located outside these three enclosures, ensuring driver safety during testing. Furthermore, a protective platform is installed under the forks carrying cargo to catch any cargo that falls due to swaying, preventing safety issues or other accidents. To accommodate the vertical movement of the forks and prevent excessive distance between the forks and the protective platform 3 from causing instability in catching falling cargo, this embodiment sets the protective platform 3 to move vertically to adjust the distance between the forks and the protective platform, ensuring stable catching of falling cargo while minimizing damage.

[0021] In this embodiment, the power mechanism 4 includes a motor assembly 41, a lower driven wheel assembly 42, an upper driven wheel assembly 43, and a chain assembly 44. The output end of the motor assembly 41 is fitted with a drive wheel, which meshes with the lower driven wheel in the lower driven wheel assembly 42. The lower driven wheel assembly 42 and the upper driven wheel assembly 43 are respectively located at the lower and upper parts of the upper guardrail assembly 2. The chain assembly 44 is connected end to end and meshes with the lower driven wheel assembly 42 and the upper driven wheel assembly 43 to form a chain conveying mechanism. The protective platform 3 is fixedly connected to the chain assembly 44.

[0022] To achieve stable up-and-down movement of the protective platform 3, this embodiment sets up two power mechanisms, which are respectively set on opposite sides of the upper guardrail assembly 2. The protective platform 3 is connected to both chain assemblies 44. To ensure the consistency of movement of the two chain assemblies 44, the two lower driven wheel assemblies 42 are connected by shaft one, and the two upper driven wheel assemblies 43 are connected by shaft two. The two motor assemblies 41 are controlled by a unified control command, thereby achieving the stability of movement of the protective platform 3.

[0023] In addition, the overall lateral dimension of the forks carrying goods is generally larger than the lateral dimension of the mast. To avoid interference with the vertical movement of the mast and to provide a certain degree of support and protection for the goods on the forks, the protective platform 3 in this embodiment includes a fixing plate 31. Three fixing plates are spliced ​​together to form a U-shaped structure. The fixing plate at the bottom of the U-shaped structure is fixedly connected to the chain assembly 44. Since the lower guardrail assembly 1 and the upper guardrail assembly 2 form a three-sided enclosure structure, the U-shaped structure, in conjunction with the three-sided enclosure, can stably catch falling goods.

[0024] In this embodiment, a laser sensor 7 is installed at the top of the upper guardrail assembly 2, and a lower proximity switch assembly 5 is installed at the bottom of the upper guardrail assembly 2 to control the upward movement of the protective platform 3 driven by the power mechanism 4. An upper proximity switch assembly 6 is installed in the upper middle part of the upper guardrail assembly 2 to detect that the forks have been raised to the highest safe position of the upper guardrail assembly 2. When the laser sensor 7 detects that the forks are descending, it will send a feedback signal to the control system, and the control system will control the protective platform 3 to descend.

[0025] When the forks carrying the goods move upward, when the goods pass the lower proximity switch assembly 5, they will send a sensing signal to the control system. The control system will send a working command to the motor assembly 41. The motor assembly 41 drives the drive wheel, the lower driven wheel assembly 42, and the upper driven wheel assembly 43 to make the chain assembly 44 move, thereby driving the protective platform 3 and the forks to move upward together. When the forks move to the highest position of the high mast, the protective platform 3 stops at a set position lower than the highest position of the high mast.

[0026] When the forks carrying goods move downwards, the laser sensor 7 installed on the top of the upper guardrail assembly 2 will send a sensing signal to the control system. The control system sends a working command to the motor assembly 41. The motor assembly 41 drives the drive wheel, the lower driven wheel assembly 42, and the lower driven wheel assembly 42 to make the chain assembly 44 move, thereby driving the protective platform 3 and the forks to move downwards together. The protective platform 3 descends to the lowest position, and the forks move to the lowest position of the high mast.

[0027] Work process: The test operator drives the forklift to lift the goods and enters from the front of the guardrail. Figure 1 Inside the high mast guardrail shown, the control system identifies the vehicle and retrieves the overall vehicle information related to the test. Once the vehicle reaches the appropriate position, where the driver is outside the lower guardrail assembly 1 while the high mast system is inside, the driver begins operating the lifting lever to raise the forks along with the cargo.

[0028] When the goods pass the lower proximity switch assembly 5, the control system starts the power mechanism 4 to drive the protective platform 3 to rise at a speed slightly lower than the lifting speed of the high gantry. Finally, the protective platform 3 stops at a position 500mm lower than the highest lifting position of the high gantry.

[0029] Forward sway test: Accelerate the vehicle by pressing the accelerator pedal. Once the vehicle reaches the required speed, release the accelerator pedal or apply the brake pedal to bring the vehicle to a stop. At this position, the forks and cargo should be approximately above the protective platform 3. The cargo, now at the highest point of the high mast, will cause significant back-and-forth swaying as it transitions from a moving to a stationary state, affecting the inner mast (on which the forks are mounted). If the swaying is excessive, the cargo may detach from the forks and fall onto the protective platform 3 without causing further damage.

[0030] Reverse sway test: After the forward sway test, the vehicle reverses to its initial position and stops. At this point, the driver is outside the lower guardrail assembly 1, while the forklift's mast system is inside. The cargo is at the highest position of the high mast, and the change from a moving state to a stationary state will cause the cargo to cause the inner mast of the high mast (where the forks are mounted) to sway violently in the front and back directions. Due to the high speed of swaying, if the cargo falls off the forks, it will fall onto the protective platform 3 without causing further damage.

[0031] After the test, the high gantry system descends. The laser sensor 7, located on top of the upper guardrail assembly 2, detects the descent of the cargo and sends a signal to the control system, causing the protective platform 3 to descend to its lowest position at a speed equal to (or slightly higher than) that of the high gantry system. Once the high gantry system reaches its lowest position, the lower guardrail assembly 1 is disengaged, and the entire gantry sway test is complete.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preventing cargo from falling during high gantry sway testing, characterized in that, It includes a lower guardrail assembly (1), an upper guardrail assembly (2), a protective platform (3), and a power mechanism (4) for driving the protective platform (3) to move on the upper guardrail assembly (2). The bottom of the upper guardrail assembly (2) is located on the upper part of the lower guardrail assembly (1), the protective platform (3) is slidably connected to the upper guardrail assembly (2), and the protective platform (3) is located on the lower part of the fork carrying the goods.

2. The anti-fall device for goods according to claim 1, characterized in that, The power mechanism (4) includes a motor assembly (41), a lower driven wheel assembly (42), an upper driven wheel assembly (43), and a chain assembly (44). The output end of the motor assembly (41) is fitted with a drive wheel, which meshes with the lower driven wheel in the lower driven wheel assembly (42). The lower driven wheel assembly (42) and the upper driven wheel assembly (43) are respectively located at the lower and upper parts of the upper guardrail assembly (2). The chain assembly (44) is connected end to end and meshes with the lower driven wheel assembly (42) and the upper driven wheel assembly (43) respectively to form a chain conveying mechanism. The protective platform (3) is fixedly connected to the chain assembly (44).

3. The anti-fall device for goods according to claim 1, characterized in that, The bottom of the upper guardrail assembly (2) is provided with a lower proximity switch assembly (5) for controlling the power mechanism (4) to drive the protective platform (3) to rise.

4. The anti-fall device for goods according to claim 1, characterized in that, An upper proximity switch assembly (6) is provided in the upper middle part of the upper guardrail assembly (2) to detect that the forks have been raised to the highest safe position of the upper guardrail assembly (2).

5. The anti-fall device for goods according to claim 1, characterized in that, A laser sensor (7) is provided on the top of the upper guardrail assembly (2).

6. The anti-fall device for goods according to claim 1, characterized in that, The protective platform (3) includes a fixing plate (31), and three fixing plates are spliced ​​together to form a U-shaped structure. The fixing plate at the bottom of the U-shaped structure is fixedly connected to the chain assembly (44).

7. The anti-fall device for goods according to claim 1, characterized in that, The height of the lower guardrail assembly (1) is the height of the lowest height gantry, and the height of the upper guardrail assembly (2) is greater than the total height of the highest height gantry and the stacked cargo.

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