Fork tip anti-collision mechanism

Abstract

The utility model discloses a fork tip anti-collision mechanism which comprises a fork tip protection plate, a fixed bottom plate, a baffle assembly, a photoelectric sensor and a reset assembly, wherein the fork tip protection plate is detachably arranged at the end of a pallet fork, the fixed bottom plate is arranged in the fork tip protection plate, and the baffle assembly, the photoelectric sensor and the reset assembly are installed on the fixed bottom plate. The front end of the fork tip protection plate is provided with a notch, the baffle assembly is located at the notch, the baffle assembly is rotationally connected with the reset assembly, and the baffle assembly is provided with a notch opposite to the photoelectric sensor. According to the scheme, obstacles in front of and on the sides of the fork tip can be detected simultaneously, and the detection range is wide; the pallet fork is simple in structure, low in cost, convenient to install, capable of being used as a modularized large-batch pallet fork to be matched with different pallet forks, long in service life and high in reliability. And for hollow obstacles and obstacles with low reflectance, effective detection can still be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision mechanisms, and more specifically to a fork tip anti-collision mechanism. Background Art

[0002] With the demand of the industrial market, unmanned guided vehicles are widely used in the warehousing and logistics industry, which can realize unmanned operations such as loading and unloading, transportation and palletizing of goods, greatly reducing labor costs, and can operate around the clock to improve work efficiency. Unmanned guided vehicles, referred to as AGVs, are a type of vehicle that can be equipped with magnetic strips or QR codes to allow AGVs to travel along a predetermined route, or equipped with laser radars and visual cameras to automatically plan routes, thereby achieving unmanned operations.

[0003] The working environment of the unmanned transport vehicle is relatively complex, with many materials and obstacles. The forks are prone to collision during operation. In order to ensure the safety and stability of operation, an anti-collision detection mechanism is usually installed at the fork tip to detect obstacles. The commonly used fork tip anti-collision detection mechanism generally installs a photoelectric sensor at the fork tip position, which can only detect obstacles directly in front of the AGV. However, due to the working environment, the fork tip position will also be hit from the side, which cannot form effective safety protection for the unmanned transport vehicle.

[0004] The prior art has the following deficiencies:

[0005] 1. It can only detect obstacles directly in front of the fork tip, but not obstacles on the side, and cannot ensure the safety of AGV operation. For example, the double protection mechanism for the tip of the fork disclosed in application No. 202311016249.7 uses photoelectric and mechanical anti-collision sensors to form double anti-collision detection, but cannot detect obstacles from the side.

[0006] 2. The fork tip anti-collision mechanism has a complex structure, high processing cost, poor adaptability, inconvenient installation, and low service life and reliability. For example, the normally open fork tip collision sensor device, front fork arm, and forklift disclosed in application number 202310675009.1 use a U-shaped collision tongue installed at the fork tip position, which can rotate a certain angle when hit, and then be triggered by built-in mechanical and photoelectric sensors. Although obstacles in front and on the sides can be detected, the patent has a complex structure and is inconvenient to install. The U-shaped collision tongue has high processing cost and poor adaptability, and each time the triggering condition is achieved through collision, which can easily cause structural and photoelectric damage, and has low service life and reliability. Utility Model Content

[0007] The utility model aims to provide a fork tip anti-collision mechanism to solve the technical problems existing in the above-mentioned background technology.

[0008] The technical solution of the utility model provides a fork tip anti-collision mechanism, comprising a fork tip protection plate detachably arranged at the end of the cargo fork, a fixed bottom plate arranged in the fork tip protection plate, a baffle assembly installed on the fixed bottom plate, a photoelectric sensor and a reset assembly;

[0009] A notch is arranged at the front end of the fork tip protection plate, the baffle assembly is located at the notch, the baffle assembly is rotatably connected to the reset assembly, and a notch opposite to the photoelectric sensor is arranged on the baffle assembly.

[0010] In a preferred embodiment, the baffle assembly includes a U-shaped baffle and two fixing seats located at one end of the U-shaped baffle, and the fixing seats are rotatably connected to the reset assembly.

[0011] In a preferred embodiment, the notch is opened in the middle of the U-shaped baffle.

[0012] In a preferred embodiment, the U-shaped baffle protrudes from the fork tip protection plate.

[0013] In a preferred embodiment, the reset assembly includes a rotating shaft and a torsion spring sleeved on the rotating shaft, a reset screw located on one side of the rotating shaft, the rotating shaft passes through the fixing seat, and the torsion spring is between two fixing seats.

[0014] In a preferred embodiment, the reset screw is threadedly connected to the fixed base plate, and the rotating shaft is fixedly connected to the fixed base plate.

[0015] In a preferred embodiment, the photoelectric sensor is arranged on a mounting plate, a waist-shaped hole is arranged on the mounting plate, and the fixing plate is fixed to the mounting plate by bolts.

[0016] The beneficial effects of the technical solution of the utility model are:

[0017] 1. It can detect obstacles in front of and on the sides of the fork tip at the same time, with a wide detection range;

[0018] 2. Simple structure, low cost, easy installation, can be used as a modular mass-adapter for different forks, with high service life and reliability;

[0019] 3. Effective detection can still be achieved for hollow and low-reflective obstacles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the relationship diagram between the fork tip anti-collision mechanism and the fork position of the utility model.

[0021] Figure 2 This is a position relationship diagram of the fork tip anti-collision mechanism and the cargo fork from another perspective of the utility model.

[0022] Figure 3 For this utility model Figure 2 A magnified image of the middle part.

[0023] Figure 4 This is a schematic diagram of the overall structure of the utility model from another perspective.

[0024] Explanation of the reference numerals: 1 fork, 2 fork tip protection plate, 21 notch, 3 fixed bottom plate, 4 baffle assembly, 41 U-shaped baffle, 42 notch, 43 fixed seat, 5 reset assembly, 51 rotating shaft, 52 torsion spring, 53 reset screw, 6 photoelectric sensor, 7 mounting plate, 71 waist-shaped hole. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the sake of illustration and convenience of description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0026] like Figure 1-4 As shown, the technical solution of the utility model provides a fork tip anti-collision mechanism, which is arranged at the fork tip position of the fork 1 and is used to detect obstacles in front of and on the sides of the fork 1.

[0027] The anti-collision mechanism comprises a fork tip guard plate 2 detachably arranged at the end of the fork 1, a fixed base plate 3 arranged inside the fork tip guard plate 2, a baffle assembly 4 installed on the fixed base plate 3, a photoelectric sensor 6 and a reset assembly 5. A notch 21 is arranged at the front end of the fork tip guard plate 2, the baffle assembly 4 is located at the notch 21, the baffle assembly 4 is rotatably connected with the reset assembly 5, the baffle assembly 4 can rotate to a certain angle after being hit, and the reset assembly 5 is used to reset the baffle assembly 4 after rotation.

[0028] The baffle assembly 4 is provided with a notch 42 opposite to the photoelectric sensor 6. The baffle assembly 4 includes a U-shaped baffle 41 and two fixing seats 43 located at one end of the U-shaped baffle 41, and the fixing seats 43 are rotatably connected to the reset assembly 5. The notch 42 is opened in the middle of the U-shaped baffle 41. The U-shaped baffle 41 is protruding from the fork tip protection plate 2.

[0029] The fork tip protection plate 2 provides space for the installation of various components and protects the components. It is fixed to the fork 1 by bolts. In the initial state, the light emitted by the photoelectric sensor 6 can smoothly emit the slot 42 opened on the U-shaped baffle 41. When there is an obstacle directly in front, the photoelectric sensor 6 will be triggered to detect the obstacle. When the obstacle in front is hollow or not reflective enough, the AGV will continue to move forward and touch the U-shaped baffle 41. At this time, the U-shaped baffle 41 starts to rotate under the action of external force until the light emitted by the photoelectric sensor 6 is blocked by the U-shaped baffle 41, and the photoelectric trigger is triggered, and the AGV stops moving forward.

[0030] Similarly, when the obstacle is located on the side of the fork tip, the obstacle will still first contact the U-shaped baffle 41, and the U-shaped baffle 41 will start to rotate until the photoelectric sensor 6 is triggered and the AGV stops moving. In the above two working conditions, after the obstacle touches the U-shaped baffle 41, the U-shaped baffle 41 will rotate a certain small angle until the photoelectric sensor is triggered, and there is no hard contact between the obstacle and the fork tip anti-collision mechanism, so it will not damage the fork tip anti-collision mechanism.

[0031] The reset assembly 5 includes a rotating shaft 51 and a torsion spring 52 sleeved on the rotating shaft 51, and a reset screw 53 located on one side of the rotating shaft 51. The rotating shaft 51 passes through the fixing seat 43, and the torsion spring 52 is between two fixing seats 43. The reset screw 53 is threadedly connected to the fixing base plate 3, and the rotating shaft 51 is fixedly connected to the fixing base plate 3.

[0032] The baffle assembly 4 rotates with the rotating shaft 51 as the reference axis under the action of external force, and when the external force is released, the baffle assembly 4 is reset by the torsion spring 52. This prevents the baffle assembly 4 from being damaged when it hits an obstacle, making the fork 1 structure safer to use. At the same time, the baffle assembly 4 can be reset in time.

[0033] The photoelectric sensor 6 is arranged on a mounting plate 7, a waist-shaped hole 71 is arranged on the mounting plate 7, and the fixing plate is fixed to the mounting plate 7 by bolts. The waist-shaped hole 71 enables the mounting position of the photoelectric sensor 6 to be adjusted.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A fork tip anti-collision mechanism, characterized in that: It includes a fork tip protection plate detachably arranged at the end of the fork, a fixed base plate arranged inside the fork tip protection plate, a baffle assembly installed on the fixed base plate, a photoelectric sensor and a reset assembly; A notch is arranged at the front end of the fork tip protection plate, the baffle assembly is located at the notch, the baffle assembly is rotatably connected to the reset assembly, and a notch opposite to the photoelectric sensor is arranged on the baffle assembly.

2. A fork tip anti-collision mechanism according to claim 1, characterized in that: The baffle assembly comprises a U-shaped baffle and two fixing seats located at one end of the U-shaped baffle, and the fixing seats are rotatably connected to the reset assembly.

3. A fork tip anti-collision mechanism according to claim 2, characterized in that: The notch is opened in the middle of the U-shaped baffle.

4. A fork tip anti-collision mechanism according to claim 2, characterized in that: The U-shaped baffle protrudes from the fork tip protection plate.

5. A fork tip anti-collision mechanism according to claim 2, characterized in that: The reset assembly includes a rotating shaft and a torsion spring sleeved on the rotating shaft, a reset screw located on one side of the rotating shaft, the rotating shaft passes through the fixing seat, and the torsion spring is between two fixing seats.

6. A fork tip anti-collision mechanism according to claim 5, characterized in that: The reset screw is threadedly connected to the fixed base plate, and the rotating shaft is fixedly connected to the fixed base plate.

7. A fork tip anti-collision mechanism according to claim 1, characterized in that: The photoelectric sensor is arranged on a mounting plate, a waist-shaped hole is arranged on the mounting plate, and the fixing plate is fixed on the mounting plate by bolts.

Images