Adjusting device for inclination angle of pallet fork
The automatic fork tilt adjustment mechanism addresses cargo shifting issues by using an incline sensor and cylinder to stabilize fork angles, enhancing safety and efficiency in fork lift operations.
Patent Information
- Application Number
- CN202422369908.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The forklift cargo forks changes in the inclination angle due to deflection when carrying heavy objects, which poses a risk of goods falling, and the goods are unevenly subjected to stress during unloading, which affects operating efficiency.
The inclination sensor is used to measure the tilt angle of the fork in real time, and the fork tilt angle is automatically adjusted through the tilt cylinder and pin mechanism. Combined with the fork controller to control the oil circuit solenoid valve, the tilt state of the fork is automatically adjusted.
It improves the safety and operating efficiency of forklift forks during handling, prevents goods from falling, ensures that goods are subjected to uniform stress, and improves the accuracy and efficiency of unloading.
Smart Images
Figure CN223102665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forklifts, and particularly relates to a device for adjusting the tilt angle of a forklift fork. Background Art
[0002] A forklift is an important tool for handling and transporting goods in a logistics system, that is, the forklift fork rises and falls together with the forklift mast for loading, unloading, and moving goods. However, when the forklift fork bears heavy goods, it will inevitably produce deflection deformation, and the deflection deformation will cause the tilt angle of the forklift fork to change, and in severe cases, it will lead to risks such as the goods moving or falling off the forklift fork. Therefore, in order to prevent the risk of the goods falling off the forklift fork during handling, after the goods are picked up, it is best for the goods to tilt slightly backward, that is, the tip of the forklift fork to tilt upward. However, when normal picking up or unloading goods, if the tip of the forklift fork tilts upward, it is not convenient for picking up or unloading goods. At this time, it is better for the tip of the forklift fork to be in a horizontal state. When unloading goods, the deflection deformation will cause the tip of the forklift fork to tilt downward; if the tip tilts downward, the front end of the goods will touch the ground first, and at the same time, along with the lowering operation of the forklift fork, the goods will exert a squeezing force on the forklift fork frame, resulting in problems such as uneven stress of the goods and too long unloading time. Content of the Utility Model
[0003] In order to solve the above problems, the utility model particularly provides an automatic adjusting device for the tilt angle of a forklift fork.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] An automatic adjusting device for the tilt angle of a forklift fork, comprising a forklift fork frame and a forklift fork assembly. The forklift fork frame includes a front frame assembly and a rear frame assembly. The forklift fork assembly is connected to the front frame assembly. The front frame assembly and the rear frame assembly are connected by an inclination adjustment assembly, so that the front frame assembly drives the forklift fork assembly to move together; the forklift fork assembly includes a forklift fork, and an inclination sensor for detecting the levelness of the forklift fork is fixedly provided on the bottom end surface of the tip of the forklift fork.
[0006] Further, the front frame assembly includes a front frame body assembled by an upper cross beam, a lower front frame cross beam, and side bending plates. The two ends of the front frame body are respectively vertically and fixedly provided with inclined plates, and the middle of the lower front frame cross beam is vertically and fixedly provided with an inclined support plate; the inclination adjustment assembly includes an inclination oil cylinder and a pin shaft; the top end of the inclined plate is located above the upper cross beam and is connected to the rear frame assembly through a pin shaft; the inclined support plate is hinged to the telescopic end of the inclination oil cylinder.
[0007] Furthermore, the inclination oil cylinder is fixedly installed on the rear frame assembly through an oil cylinder support; upper hooks and lower hooks are fixedly provided on the rear side surface of the vertical section of the forklift fork.
[0008] In a further solution, a vertical plate is connected between the upper cross beam and the lower cross beam of the front frame, and the inclined plate is located on the back surface of the vertical plate and is fixedly connected to the upper cross beam and the lower cross beam of the front frame at both ends.
[0009] In a further solution, the rear frame assembly includes two columns, and a rear frame lower cross beam and a connecting plate are horizontally connected between the two columns. An avoidance groove is formed on the top end surface of the rear frame lower cross beam.
[0010] In a further solution, the output end of the inclination sensor is connected to the forklift controller. Solenoid valves are respectively installed on the oil paths of the rodless cavity and the rod cavity of the tilt cylinder, and the output end of the forklift controller is connected to the solenoid valve.
[0011] In this application, through the pin shaft and the tilt cylinder, the front frame body rotates integrally around the pin shaft, so that the forklift fork can tilt, preventing the risk of goods falling from the forklift fork during handling.
[0012] In this application, the inclination sensor is installed on the bottom end surface of the fork tip and is located on the same horizontal plane, so it can measure the current angle of the forklift fork in real time. Even if the forklift fork produces deflection deformation under the action of heavy objects, the inclination angle after the forklift fork produces deflection deformation can also be collected. That is, what the forklift controller receives is the actual inclination angle of the forklift fork. When unloading goods, the problem of the ground squeezing the front end of the goods and the goods squeezing the forklift fork frame is avoided, thus improving the safety and accuracy of the forklift fork during operation.
[0013] In this application, the inclination sensor measures the current inclination angle of the forklift fork in real time to control the operation of the tilt cylinder, realizing the automatic adjustment of the inclination angle of the forklift fork, thereby improving the efficiency of taking and placing goods. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation of this application.
[0015] Figure 1 It is a schematic structure of the present utility model Figure One ,
[0016] Figure 2 It is a schematic structure of the present utility model Figure Two ,
[0017] Figure 3 It is the front view of the front frame assembly in the present utility model,
[0018] Figure 4 It is the rear view of the front frame assembly in the present utility model,
[0019] Figure 5 It is the structural schematic diagram of the rear frame assembly in the present utility model,
[0020] Figure 6 This is a schematic structural diagram of the fork assembly in the present utility model.
[0021] In the figure: front frame assembly 1, rear frame assembly 2, tilt adjustment assembly 3, fork assembly 4;
[0022] Upper crossbeam 11, front frame lower crossbeam 12, side bending plate 13, vertical plate 14, tilt plate 15, tilt support plate 16;
[0023] Column 21, rear frame lower crossbeam 22, connecting plate 23, avoidance groove 24;
[0024] Tilt cylinder 31, pin shaft 32, cylinder support 33;
[0025] Fork 41, upper hook 42, inclination sensor 43, fork tip 44. Specific embodiments
[0026] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.
[0027] Refer to Figures 1-6 , this embodiment provides an automatic adjustment device for the tilt angle of the fork, including a fork frame and a fork assembly 4. The fork frame includes a front frame assembly 1 and a rear frame assembly 2. The fork assembly 4 is connected to the front frame assembly 1. The front frame assembly 1 and the rear frame assembly 2 are connected through a tilt adjustment assembly 3, so that the front frame assembly 1 drives the fork assembly 4 to move together; the fork assembly 4 includes a fork 41, and an inclination sensor 43 for detecting the level of the fork 41 is fixedly provided at the bottom end face of the fork tip 44 of the fork 41. The inclination sensor 43 is horizontally arranged and is on the same horizontal line as the horizontal section of the fork.
[0028] As Figure 3 、 4 shown, the front frame assembly 1 includes a front frame body assembled by an upper crossbeam 11, a front frame lower crossbeam 12, and a side bending plate 13. Tilt plates 15 are vertically and fixedly provided at both ends of the front frame body. An inclination support plate 16 is vertically and fixedly provided in the middle of the front frame lower crossbeam 12; the tilt adjustment assembly 3 includes a tilt cylinder 31 and a pin shaft 32; the top end of the tilt plate 15 is located above the upper crossbeam 11 and is connected to the rear frame assembly 2 through the pin shaft 32; specifically, as Figure 2 shown, one end of the pin shaft 32 is fixedly installed on the side wall of the vertical plate 14 of the rear frame assembly 2, and the top end of the tilt plate 15 is inserted through the other end of the pin shaft 32 and can rotate around the pin shaft 32. Since the bottom of the tilt plate 15 is fixed to the front frame body, the entire front frame body rotates around the pin shaft 32.
[0029] The tilt cylinder 31 is fixedly mounted on the rear frame assembly 2 via a cylinder support 33; the tilt support plate 16 is hinged to the telescopic end of the tilt cylinder 31. The hinge in this embodiment is preferably connected by a rotating shaft. When the telescopic end of the tilt cylinder 31 performs a telescopic movement, the lower cross beam 12 of the front frame is driven to perform a corresponding movement, and can also rotate due to the hinge.
[0030] like Figure 6 As shown, an upper hook 42 and a lower hook are fixedly provided on the rear side of the vertical section of the fork 41, that is, the fork 41 is respectively hung on the upper crossbeam 11 and the lower crossbeam 12 of the front frame assembly 1 through the upper and lower hooks, so that the fork assembly 4 moves together with the front frame assembly 1.
[0031] In order to enhance the structural strength of the front frame assembly 1, a vertical plate 14 is connected between the upper cross beam 11 and the lower cross beam 12 of the front frame; the inclined plate 15 is located on the back of the vertical plate 14 and its two ends are respectively fixedly connected to the upper cross beam 11 and the lower cross beam 12 of the front frame. The inclined plate 15 is arranged on the back of the vertical plate 14 to prevent the inclined plate 15 from blocking the driver's sight.
[0032] like Figure 5 As shown, the rear frame assembly 2 includes two columns 21, and a rear frame lower cross beam 22 and a connecting plate 23 are horizontally connected between the two columns 21. The top end surface of the rear frame lower cross beam 22 is provided with an avoidance groove 24.
[0033] In order to realize the automatic control strategy, the output end of the tilt sensor 43 is connected to the forklift controller, and the oil circuits of the rodless chamber and the rod chamber of the tilt oil cylinder 31 are respectively installed with solenoid valves, and the output end of the forklift controller is connected to the solenoid valve. The forklift controller is a controller that comes with the forklift itself. This application only connects the output signal line of the tilt sensor 43 to the forklift controller to realize signal transmission. The rodless chamber and the rod chamber of the tilt oil cylinder 31 are respectively connected to the oil tank to form an oil circuit, and solenoid valves are respectively installed on them to control the on and off of the oil circuit.
[0034] When the forklift has finished picking up the goods, it is necessary to adjust the horizontal section of the fork to a tilted state, connect the solenoid valve on the rodless chamber oil circuit of the tilt cylinder, and allow oil to flow in, so that the piston extends and moves forward against the front frame lower crossbeam 12 of the front frame assembly 1, and the fork tip 44 of the fork tilts upward to prevent the goods from slipping off the fork. The tilt sensor is installed on the bottom end surface of the fork tip, so it can measure the current tilt angle of the fork in real time. When the tilt angle of the fork meets the required value, it is converted into an electrical signal and output to the forklift controller, disconnecting the solenoid valve on the oil circuit, and stopping the oil flow to the tilt cylinder.
[0035] When the forklift is unloading, it is necessary to adjust the horizontal section of the fork to a horizontal state; at this time, by controlling the oil inlet of the rod chamber of the tilt cylinder, the piston rod is retracted, and at this time, the fork returns to the horizontal state under the action of gravity. The tilt sensor measures the current tilt angle of the fork in real time, and when the horizontal section of the fork reaches the horizontal state, the oil inlet is stopped. Thus, the automatic adjustment of the tilt angle of the fork is realized in this application.
[0036] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application are within the scope of protection of the pending claims of this application.
Claims
1. An adjusting device for the tilt angle of a forklift fork, comprising a forklift fork frame and a forklift fork assembly (4), wherein the forklift fork frame includes a front frame assembly (1) and a rear frame assembly (2), and is characterized in that: The fork assembly (4) is connected to the front frame assembly (1), and the front frame assembly (1) and the rear frame assembly (2) are connected by an inclination adjustment assembly (3), so that the front frame assembly (1) drives the fork assembly (4) to move together; the fork assembly (4) includes forks (41), and an inclination sensor (43) for detecting the levelness of the forks (41) is fixedly arranged on the bottom end surface of the fork tips (44) of the forks (41).
2. The adjusting device according to claim 1, characterized in that: The front frame assembly (1) includes a front frame body assembled by an upper cross beam (11), a front frame lower cross beam (12), and side bending plates (13). Tilt plates (15) are vertically and fixedly arranged at both ends of the front frame body, and a tilt support plate (16) is vertically and fixedly arranged in the middle of the front frame lower cross beam (12); the inclination adjustment assembly (3) includes an inclination oil cylinder (31) and a pin shaft (32); the top end of the tilt plate (15) is located above the upper cross beam (11) and is connected to the rear frame assembly (2) through the pin shaft (32); the tilt support plate (16) is hinged to the telescopic end of the inclination oil cylinder (31).
3. The adjusting device according to claim 2, characterized in that: The inclination oil cylinder (31) is fixedly installed on the rear frame assembly (2) through an oil cylinder support (33); an upper hook (42) and a lower hook are fixedly arranged on the rear side surface of the vertical section of the forks (41).
4. The adjusting device according to claim 2, characterized in that: A vertical plate (14) is connected between the upper cross beam (11) and the front frame lower cross beam (12), and the tilt plate (15) is located on the back surface of the vertical plate (14) and is fixedly connected to the upper cross beam (11) and the front frame lower cross beam (12) at both ends respectively.
5. The adjusting device according to claim 1, characterized in that: The rear frame assembly (2) includes two columns (21), a rear frame lower cross beam (22) and a connecting plate (23) are horizontally connected between the two columns (21), and an avoidance groove (24) is formed on the top end surface of the rear frame lower cross beam (22).
6. The adjusting device according to claim 2, characterized in that: The output end of the inclination sensor (43) is connected to the forklift controller, solenoid valves are respectively installed on the oil paths of the rodless cavity and the rod cavity of the inclination oil cylinder (31), and the output end of the forklift controller is connected to the solenoid valves.