A multi-functional attachment with rotary pitch adjustment and side shift

Abstract

The present application discloses a multifunctional attachment with rotary distance adjustment and side shift, comprising: a side shift assembly, which is arranged on a forklift. At one end of the side shift assembly away from the forklift, a rotary assembly is provided. On the upper surface of the rotary assembly, a distance adjustment assembly is provided. The angle of the distance adjustment assembly is adjusted by the rotary assembly, and the goods are carried by the distance adjustment assembly. In the present invention, through the setting of the distance adjustment assembly, the hand crank is used to drive the transmission lead screw to rotate, so that two transmission nuts drive the corresponding fork arms to contract or expand. Through the above actions, the distance adjustment function of the fork arms is completed. The above structure does not need to use hydraulic oil to realize the transmission operation, and thus there will be no liquid pressure loss, thereby improving the positioning accuracy of the fork. At the same time, since a groove is provided at the upper end of the fork arm, the bar material can be directly forked through the groove. Through the above actions, it is not necessary to use a pallet, avoiding increasing the material cost of the enterprise.

Description

Technical Field

[0001] This application relates to the technical field of forklift equipment, and particularly to a multifunctional attachment with rotary distance adjustment and side shift. Background Art

[0002] A forklift refers to various wheeled handling vehicles for loading, stacking, and short-distance transportation of palletized goods. It is commonly used for transporting large items in warehousing and is driven by a fuel engine or battery. In addition, a forklift usually loads a multifunctional attachment during operation, which can better handle goods.

[0003] For existing multifunctional attachments, the fork is usually driven to move left and right by a double-acting oil cylinder to achieve the distance adjustment function. Since the medium for realizing the function is hydraulic oil and the action mechanism is a hydraulic cylinder, there are problems such as large pressure loss in the hydraulic system during actual use. At the same time, the above mechanism requires the addition of a multi-way valve and pipelines, and these structures may have problems such as oil leakage during long-term use. In addition, before a forklift transports goods through a multifunctional attachment, the goods need to be placed on a pallet, and the goods are lifted, stacked, and transferred by fork-lifting the pallet. In this way, for some cylindrical goods (such as bars), special pallets often need to be made, which will increase the material cost of the enterprise. Summary of the Invention

[0004] This application provides a multifunctional attachment with rotary distance adjustment and side shift, which has the advantages of stable fork movement and directly lifting bar-shaped materials, to solve the problems existing in the above background art.

[0005] To achieve the above object, this application adopts the following technical solution: A multifunctional attachment with rotary distance adjustment and side shift, comprising: a side shift assembly, the side shift assembly is arranged on the forklift, a rotary assembly is arranged at one end of the side shift assembly away from the forklift, and a distance adjustment assembly is arranged on the upper surface of the rotary assembly. The angle of the distance adjustment assembly is adjusted through the rotary assembly, and the goods are carried by the distance adjustment assembly.

[0006] Further, the rotary assembly includes a base, a slewing bearing, a rotary platform, and a safety pin. The base is arranged at one end of the side shift assembly away from the forklift, a slewing bearing is arranged on the upper surface of the base, and a rotary platform is arranged on the upper surface of the slewing bearing for driving the distance adjustment assembly to adjust the angle. A safety pin is commonly arranged on the side of the rotary platform facing away from the forklift and the side of the base facing away from the forklift to limit the rotation of the rotary platform.

[0007] Further, the distance adjustment assembly includes a sliding guide rail, a fork arm, a slider, a transmission nut, a transmission screw rod, and a hand wheel. The sliding guide rail is arranged on the upper surface of the rotating platform. Above the sliding guide rail, there is a fork arm for carrying goods. At the position corresponding to the sliding guide rail on the lower surface of the fork arm, there is a slider for adapting to the sliding guide rail. At the middle position of the lower surface of the fork arm, there is a transmission nut. Below the fork arm, there is a transmission screw rod. The transmission screw rod and the transmission nut are in threaded connection. The number of the fork arms and the transmission nuts is two. The threading directions inside the two transmission nuts are opposite. One end of the transmission screw rod is fixedly installed with a hand wheel for realizing the rotation of the transmission screw rod.

[0008] Further, the fork arm is composed of a chassis, a fixing member, and a movable member. The chassis is arranged above the sliding guide rail. The slider and the transmission nut are both arranged on the lower surface of the chassis. On the upper surface of the chassis, there is a fixing member. The side of the fixing member facing the side shift assembly is arranged as an inclined surface. On the side of the fixing member facing the side shift assembly, there is a movable member for carrying goods. Inside the fixing member, near the movable member, there is a chute. In the chute, there is a moving block. The moving block is connected to the movable member for restricting the downward sliding direction of the movable member. Between the bottom wall of the chute and the moving block, there is a first elastic member fixedly installed together for realizing the reset of the movable member.

[0009] Further, inside the fixing member, at the position facing away from the side shift assembly, there is a lifting groove. Inside the lifting groove, there is a lifting member. Between the lower surface of the lifting member and the chassis, there is a second elastic member for supporting the lifting member. The sum of the elastic forces of the first elastic member and the second elastic member is less than the gravity of the goods to be forked. Inside the fixing member and the chassis, there is a pull rope for realizing the synchronous movement of the moving block and the lifting member.

[0010] Further, inside the chassis, there is a sliding cavity. Inside the sliding cavity, there is a force applying member. The longitudinal section of the force applying member extends into the lifting groove for contacting the lifting member. The transverse section of the force applying member is movably connected to the sliding cavity for extending out of the sliding cavity. On the side of the movable member facing the side shift assembly, there is a pressing member. By pushing the pressing member to deflect through the force applying member extending out of the sliding cavity, the pressing member contacts the goods.

[0011] Further, the pressing member is divided into a pressing section on the upper side and a force receiving section on the lower side. The length of the force receiving section is longer than the length of the pressing section.

[0012] Further, the bottom surface of the movable member is arranged as a plane. When the movable member slides down to the limit position, the bottom surface of the movable member contacts the upper surface of the chassis.

[0013] A multifunctional attachment with rotary distance adjustment and side shift provided by the present application, through the setting of the distance adjustment assembly, utilizes the rotation of the transmission screw rod to drive the fork arms to slide left and right, thereby completing the distance adjustment function of the fork arms. The above structure does not require the use of hydraulic oil to achieve the transmission operation, and thus there will be no liquid pressure loss, thereby improving the positioning accuracy of the forklift forks. At the same time, since a groove is provided at the upper end of the fork arms, the bar-shaped materials can be directly forklifted through the groove. Through the above actions, it is not necessary to use pallets, avoiding increasing the material cost of the enterprise.

[0014] Through the setting of the fixed part and the movable part, by utilizing the displacement action of the movable part, the center of gravity position of the goods is changed, so that when the forklift truck transports the goods, it is not easy to tip over.

[0015] Through the setting of the movable part and the chassis, by utilizing the displacement of the movable part to be completed, the mechanical strength of the goods bearing mechanism is indirectly increased, so that when the forklift truck transports the goods, it is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0017] Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:

[0018] Figure 1 is a schematic diagram of the overall structure in Embodiment 1 of the present invention;

[0019] Figure 2 is a schematic diagram of the composition structure of the distance adjustment assembly in Embodiment 1 of the present invention;

[0020] Figure 3 is a schematic diagram of the composition structure of the rotation assembly in Embodiment 1 of the present invention;

[0021] Figure 4 is a schematic diagram of the internal structure of the fork arm in Embodiment 2 of the present invention;

[0022] Figure 5 For the present invention Figure 4 is a partially enlarged schematic diagram of the structure at A in;

[0023] Figure 6 is a schematic diagram of the installation state of the force application member in Embodiment 2 of the present invention.

[0024] Reference Signs:

[0025] 1. Side shift assembly; 2. Rotation assembly; 20. Base; 21. Slewing bearing; 22. Rotating platform; 23. Safety bolt; 3. Distance adjustment assembly; 30. Sliding guide rail; 31. Fork arm; 310. Chassis; 311. Fixed part; 312. Movable part; 32. Slide block; 33. Transmission nut; 34. Transmission lead screw; 35. Handwheel; 4. Chute; 5. Moving block; 6. First elastic member; 7. Lifting groove; 8. Lifting member; 9. Second elastic member; 10. Pulling rope; 11. Sliding cavity; 12. Force applying member; 13. Pressing member. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0027] Embodiment 1

[0028] Please refer to Figures 1-3, A multifunctional attachment with rotational pitch adjustment and side shift, including a side shift assembly 1. The side shift assembly 1 is installed on a forklift (not shown in the figure). At one end of the side shift assembly 1 away from the forklift, there is a rotational assembly 2. The rotational assembly 2 includes a base 20, a slewing bearing 21, a rotating platform 22, and a safety pin 23. The base 20 is fixedly installed at one end of the side shift assembly 1 away from the forklift. The upper surface of the base 20 is welded with the slewing bearing 21. The upper surface of the slewing bearing 21 is rotatably installed with the rotating platform 22. On the side of the rotating platform 22 facing away from the forklift and the side of the base 20 facing away from the forklift, there is a safety pin 23 together, used to limit the rotation of the rotating platform 22. During operation, the safety pin 23 is opened, and the rotating platform 22 is rotated. Due to the support and rotation of the slewing bearing 21, the rotating platform 22 drives the subsequent fork arm 31 to rotate, achieving the function of adjusting the angle of the fork arm 31. On the upper surface of the rotational assembly 2, there is a pitch adjustment assembly 3. The pitch adjustment assembly 3 includes a sliding guide rail 30, fork arms 31, sliders 32, transmission nuts 33, transmission lead screws 34, and a handwheel 35. The sliding guide rail 30 is fixedly arranged on the upper surface of the rotating platform 22. Above the sliding guide rail 30, there are fork arms 31. At the position corresponding to the sliding guide rail 30 on the lower surface of the fork arm 31, there are sliders 32 bolted. The sliders 32 and the sliding guide rail 30 form a movable connection. In the middle position of the lower surface of the fork arm 31, there is a transmission nut 33 bolted. Below the fork arm 31, there is a transmission lead screw 34. The transmission lead screw 34 and the transmission nut 33 form a threaded connection. The number of fork arms 31 and transmission nuts 33 is two. The threading directions inside the two transmission nuts 33 are opposite. One end of the transmission lead screw 34 is fixedly installed with a handwheel 35. There is a groove on the upper side of the fork arm 31. Through the setting of the pitch adjustment assembly 3, the handwheel 35 is used to drive the transmission lead screw 34 to rotate, so that the two transmission nuts 33 drive the corresponding fork arms 31 to contract or expand. Through the above actions, the pitch adjustment function of the fork arms 31 is completed. Since the above structure does not require the use of hydraulic oil to achieve the transmission operation, there will be no liquid pressure loss, thereby improving the positioning accuracy of the fork. At the same time, since there is a groove at the upper end of the fork arm 31, the bar material can be directly forked through the groove. Through the above actions, there is no need to use a pallet, avoiding increasing the enterprise's material cost.

[0029] Embodiment 2

[0030] Please refer to Figure 1 , Figure 2 and Figure 4, this embodiment is a further improvement on Embodiment 1. The improvement lies in that the fork arm 31 is composed of a chassis 310, a fixing member 311 and a movable member 312. The chassis 310 is arranged above the sliding guide rail 30. The slider 32 and the transmission nut 33 are both arranged on the lower surface of the chassis 310. A fixing member 311 is welded on the upper surface of the chassis 310. One side of the fixing member 311 facing the side shift assembly 1 is provided with an inclined surface. A movable member 312 is arranged on the side of the fixing member 311 facing the side shift assembly 1. The upper side surfaces of the fixing member 311 and the movable member 312 together form a groove. A sliding groove 4 is opened at a position inside the fixing member 311 close to the movable member 312. A moving block 5 is slidably clamped in the sliding groove 4. The side surface of the moving block 5 facing the movable member 312 is fixedly welded to the movable member 312. A first elastic member 6 is fixedly installed between the bottom wall of the sliding groove 4 and the moving block 5. When forklifting goods such as bars, the gravity of the goods will overcome the elastic force of the first elastic member 6, causing the goods to drive the movable member 312 to slide down along the inclined surface of the fixing member 311 and compress the first elastic member 6. Through the above actions, the center of gravity of the goods is closer to the forklift, thereby reducing the probability of the forklift tipping over when carrying goods.

[0031] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , a lifting groove 7 is opened at a position inside the fixing member 311 facing away from the side shift assembly 1. A lifting member 8 is slidably installed inside the lifting groove 7. A second elastic member 9 is fixedly installed between the lower surface of the lifting member 8 and the chassis 310. The sum of the elastic forces of the first elastic member 6 and the second elastic member 9 is less than the gravity of the goods to be forklifted. A pulling rope 10 (such as a steel wire rope in the prior art) is jointly arranged inside the fixing member 311 and the chassis 310. One end of the pulling rope 10 is connected to the side of the moving block 5 facing away from the first elastic member 6. The other end of the pulling rope 10 bypasses the bottom end of the transmission nut 33 and is connected to the lower surface of the lifting member 8. During the process of the above-mentioned goods driving the movable member 312 to slide down, the movable member 312 pulls the pulling rope 10 through the moving block 5, so that the pulling rope 10 exerts a downward pulling force on the lifting member 8, and this downward pulling force is applied to the side of the chassis 310 away from the goods through the second elastic member 9. Through the above actions, the gravity of the goods itself is utilized to balance the center of gravity of the chassis 310, reducing the probability of the chassis 310 tilting, thereby reducing the force exerted by the chassis 310 on the sliding guide rail 30 through the slider 32, making the sliding guide rail 30 not easily damaged.

[0032] Please refer to Figure 4 and Figure 6, a sliding cavity 11 is provided inside the chassis 310. A force-applying member 12 is slidably installed in the sliding cavity 11. The longitudinal section of the force-applying member 12 extends into the lifting groove 7. The transverse section of the force-applying member 12 forms a movable clamping connection with the sliding cavity 11 and is reset by a spring. One side of the movable member 312 facing the side-shifting assembly 1 is hinged with a pressing member 13. The gravity of the lower end of the pressing member 13 is greater than the gravity of the upper end of the pressing member 13. When the movable member 312 slides down to a certain position, the lower end of the pressing member 13 will be driven to the side of the chassis 310. At the same time, the movable member 312 pulls the lifting member 8 down to a certain position through the pulling rope 10 and contacts the longitudinal section of the force-applying member 12. After that, as the movable member 312 continues to move down, the lifting member 8 presses the longitudinal section of the force-applying member 12 to move down, so that the transverse section of the force-applying member 12 extends out of the sliding cavity 11 and contacts the lower end of the pressing member 13, causing the upper end of the pressing member 13 to tilt and contact the surface of the goods. Through the above actions, the fixing member 311 and the upper end of the pressing member 13 play a role in fixing the goods, reducing the probability of the goods shaking during handling.

[0033] The pressing member 13 is divided into a pressing section located above the hinge point and a force-receiving section located below the hinge point. The length of the force-receiving section is longer than the length of the pressing section. Through the setting of the above structure, the fixing force of the pressing member 13 on the goods is increased.

[0034] The bottom surface of the movable member 312 is arranged as a plane. When the movable member 312 slides down to the limit position, the bottom surface of the movable member 312 contacts the upper surface of the chassis 310. Through the setting of the above structure, the gravity of the final goods will be applied to the movable member 312 and part of the fixing member 311. Through the above change, the height of the goods-carrying mechanism is shortened, indirectly increasing the mechanical strength of the goods-carrying mechanism, making the forklift more stable when handling goods.

Claims

1. A multifunctional attachment with rotational pitch adjustment and side shift, comprising: Lateral shift assembly (1), the lateral shift assembly (1) is arranged on a forklift, characterized in that a rotation assembly (2) is arranged at one end of the lateral shift assembly (1) far away from the forklift, and a distance adjustment assembly (3) is arranged on the upper surface of the rotation assembly (2). The angle of the distance adjustment assembly (3) is adjusted through the rotation assembly (2), and goods are carried through the distance adjustment assembly (3). The distance adjustment assembly (3) includes a sliding guide rail (30), a fork arm (31), a slider (32), a transmission nut (33), a transmission lead screw (34) and a hand wheel (35). The sliding guide rail (30) is arranged on the upper surface of the rotating platform (22). A fork arm (31) is arranged above the sliding guide rail (30) for carrying goods. Sliders (32) are arranged on the lower surface of the fork arm (31) corresponding to the positions of the sliding guide rail (30) for adapting to the sliding guide rail (30). A transmission nut (33) is arranged at the middle position of the lower surface of the fork arm (31). A transmission lead screw (34) is arranged on the lower side of the fork arm (31). The transmission lead screw (34) is threadedly connected with the transmission nut (33). The number of the fork arms (31) and the transmission nuts (33) is two. The threading directions inside the two transmission nuts (33) are opposite. One end of the transmission lead screw (34) is fixedly installed with a hand wheel (35) for realizing the rotation of the transmission lead screw (34). The fork arm (31) is composed of a chassis (310), a fixing member (311) and a movable member (312). The chassis (310) is arranged above the sliding guide rail (30). The sliders (32) and the transmission nuts (33) are both arranged on the lower surface of the chassis (310). A fixing member (311) is arranged on the upper surface of the chassis (310). One side of the fixing member (311) facing the lateral shift assembly (1) is arranged in an inclined plane. A movable member (312) is arranged on one side of the fixing member (311) facing the lateral shift assembly (1) for carrying goods. A chute (4) is opened at a position inside the fixing member (311) close to the movable member (312). A moving block (5) is arranged in the chute (4). The moving block (5) is connected with the movable member (312) for restricting the downward sliding direction of the movable member (312). A first elastic member (6) is fixedly installed between the bottom wall of the chute (4) and the moving block (5) for realizing the reset of the movable member (312).

2. The multifunctional attachment with rotational pitch adjustment and side shift according to claim 1, characterized in that, The rotation assembly (2) includes a base (20), a slewing bearing (21), a rotating platform (22) and a safety pin (23). The base (20) is arranged at one end of the lateral shift assembly (1) far away from the forklift. A slewing bearing (21) is arranged on the upper surface of the base (20). A rotating platform (22) is arranged on the upper surface of the slewing bearing (21) for driving the distance adjustment assembly (3) to adjust the angle. A safety pin (23) is jointly arranged on one side of the rotating platform (22) facing away from the forklift and one side of the base (20) facing away from the forklift for restricting the rotation of the rotating platform (22).

3. The multifunctional attachment with rotational pitch adjustment and side shift according to claim 1, characterized in that, A lifting groove (7) is formed inside the fixing member (311) at a position facing away from the side shifting assembly (1). A lifting member (8) is arranged inside the lifting groove (7). A second elastic member (9) is jointly arranged between the lower surface of the lifting member (8) and the chassis (310) to support the lifting member (8). The sum of the elastic forces of the first elastic member (6) and the second elastic member (9) is less than the gravity of the goods to be forklifted. A pull rope (10) is jointly arranged inside the fixing member (311) and the chassis (310) to realize the synchronous movement of the moving block (5) and the lifting member (8).

4. The multifunctional attachment with rotational pitch adjustment and side shift according to claim 3, characterized in that, A sliding cavity (11) is formed inside the chassis (310). A force applying member (12) is arranged inside the sliding cavity (11). The longitudinal section of the force applying member (12) extends into the lifting groove (7) to contact the lifting member (8). The transverse section of the force applying member (12) is movably connected to the sliding cavity (11) to extend out of the sliding cavity (11). A pressing member (13) is arranged on one side of the movable member (312) facing the side shifting assembly (1). The pressing member (13) is deflected by the force applying member (12) extending out of the sliding cavity (11) so that the pressing member (13) contacts the goods.

5. The multifunctional attachment with rotational pitch adjustment and side shift according to claim 4, characterized in that, The pressing member (13) is divided into an upper pressing section and a lower stress section, and the length of the stress section is longer than that of the pressing section.

6. The multifunctional attachment with rotational pitch adjustment and side shift according to claim 1, characterized in that, The bottom surface of the movable member (312) is flat. When the movable member (312) slides down to the limit position, the bottom surface of the movable member (312) contacts the upper surface of the chassis (310).

Images