A front fork assembly for a forklift truck

Abstract

This application discloses a front fork assembly for a forklift, belonging to the field of forklift technology. It includes a forklift body, a hydraulic rod, a fork carriage, a backrest, and a front fork. The front fork includes a support fork that slides left and right on the backrest. A fork is rotatably connected to the lower end of the support fork. The fork and support fork abut against each other with rounded ends and abutting ends. The abutting end abuts against the lower end of the support fork. A connecting frame is fixedly installed at the lower end of the backrest. Two vertically distributed positioning rods are provided at the connecting frame, passing through the support fork and the fork respectively. A threaded component is threadedly connected between the positioning rods and the connecting frame to fix the connecting frame and the positioning rods. A sleeve is rotatably fitted on the outer periphery of the lower positioning rod. An insert is fixed on the outer periphery of the sleeve. A fixing cylinder is fixed on the fork, and the fixing cylinder and the insert are inserted into each other. The upper part of the inclined surface is tilted backward. During movement, the fork can abut against the support fork to receive it, thereby preventing the fork from contacting the outside environment.

Description

Technical Field

[0001] This application relates to the field of forklift technology, and more specifically, to a front fork assembly for a handling forklift. Background Technology

[0002] The forklift fork, also known as the cargo fork, is an important component of the forklift. Cargo forks are usually made of high-strength and high-hardness steel. When in use, the fork is first placed at the bottom of the cargo, and the operator controls the lifting device on the forklift to lift the cargo, causing the forks to rise or fall.

[0003] During the movement of a forklift, it may encounter some areas with relatively narrow spaces. When moving in such areas, the forklift's forks are fixed horizontally to the front of the lifting baffle, which increases the length of the forklift. This restricts the forklift's movement in confined spaces. Even when the forklift is placed at its highest position, there may still be a risk of tripping and some limitations on its movement.

[0004] Therefore, a fork assembly for handling forklifts is needed to solve the above problems. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section above, some embodiments of this application provide a fork assembly for a forklift, comprising: a forklift body, two sets of symmetrical hydraulic rods mounted on the front end of the forklift body, a fork carriage connected to the front end of the hydraulic rods, the lower end of the fork carriage being rotatably connected to the forklift body, a sliding stop mounted on the front end of the fork carriage, and two forks that can move left and right and are distributed left and right being fitted into the front end of the stop.

[0007] Furthermore, the front fork includes a support fork that slides left and right on the shelf, the lower end of the support fork is rotatably connected to a fork, the upper end of the fork is provided with a rounded end and an abutment end, the rounded end is arranged on the same side as the extension direction of the fork, the abutment end is arranged in the opposite direction to the extension direction of the fork, the abutment end can fit against the lower end surface of the support fork, and the axis of the rounded end is coaxial with the rotatable connection between the support fork and the fork.

[0008] A connecting frame is fixedly installed at the lower end of the support rack. The connecting frames are symmetrically arranged on the left and right. Two positioning rods are provided between the two connecting frames, and the two positioning rods pass through the support fork and the fork respectively. A threaded component is threadedly connected between the positioning rod and the connecting frame. The threaded component is used to fix the connecting frame and the positioning rod. A tube is rotatably fitted on the outer periphery of the positioning rod at the lower end. The left and right ends of the tube abut against the adjacent ends of the two connecting frames. An insert is fixed on the outer periphery of the tube. The insert extends left and right with the same axial length as the tube. A fixing cylinder is fixed on the fork. The fixing cylinder is inserted into the insert.

[0009] Furthermore, each of the two forks has a fixed insert at its rear end. The backrest includes a fixed frame that slides vertically with the fork carriage. The fork carriage and the fixed frame are connected by a lifting mechanism. The fixed frame has a fixed rod arranged horizontally on the left and right sides. Rotating frames are rotatably connected to the left and right ends of the fixed rods. Push rods are fixed at the close ends of the two rotating frames. The fixed frame has slots evenly distributed on the left and right sides. The insert is engaged with the slot.

[0010] Furthermore, a positioning wheel is welded and fixed on the insert, and an insertion hole is opened on the outer periphery of the positioning wheel. A sliding groove is opened in the positioning rod at the upper end, and a sliding insert rod is slidably connected in the sliding groove. The sliding insert rod extends upward and passes through the positioning rod. A pull plate is fixed at the upper end of the sliding insert rod, and the lower end of the sliding insert rod can be inserted into the insertion hole. The lower end of the sliding insert rod passes through the insertion hole and is inserted into the positioning wheel. A tension spring is connected between the sliding insert rod and the side wall of the sliding groove.

[0011] Furthermore, the front end face of the fork is provided with an inclined surface, and the upper part of the inclined surface is tilted backward when the fork is in a vertical state.

[0012] The beneficial effects of this application are as follows:

[0013] 1. During movement, by flipping the fork upwards to fit against the inclined surface of the support fork, the fork can be prevented from touching the outside world during movement, and it can turn through narrow areas during movement. By tilting the upper end of the inclined surface backwards, the fork is stationary at the support fork before being flipped downwards, preventing the fork from suddenly swinging downwards and colliding with external objects.

[0014] 2. Insert the insert cylinder into the positioning rod below, and insert strips of the same length on the outer circumference of the insert cylinder. The synchronous flipping of the left and right forks is achieved by the insertion and cooperation of the insert strips and the fixed cylinder. Positioning wheels are fixed at the outer ends of the insert cylinder and the insert strips. Positioning is achieved by the sliding insert rod set at the positioning rod sliding upward and the insertion hole in the positioning wheel. This prevents the forks from accidentally flipping when the forklift body moves to rutted or potholed sections of road. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a forklift assembly for a pallet truck according to this application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the appearance of the forklift after removing the forklift body in the embodiment;

[0020] Figure 3 yes Figure 1 A schematic diagram of the connection between the support fork and the fork in the embodiment;

[0021] Figure 4 yes Figure 2 A schematic diagram of the appearance of the fork and the support fork after they are closed in the embodiment;

[0022] Figure 5 yes Figure 2 A schematic diagram of the front view structure in the embodiment;

[0023] Figure 6 yes Figure 5 A partially enlarged cross-sectional view of AA in the embodiment.

[0024] Figure label:

[0025] 10. Forklift body; 11. Hydraulic rod; 12. Fork carriage; 13. Backrest; 14. Front fork; 30. Fixed frame; 31. Fixed rod; 32. Rotating frame; 33. Push rod; 34. Slot; 40. Carrying fork; 41. Fork; 42. Rounded end; 43. Abutment end; 44. Connecting frame; 45. Positioning rod; 46. Threaded part; 47. Insert sleeve; 48. Insert strip; 49. Fixed sleeve; 50. Insert block; 51. Positioning wheel; 52. Sliding insert rod; 53. Sliding groove; 54. Insert hole; 60. Angled surface. Detailed Implementation

[0026] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0027] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0029] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Reference Figure 1 , 3 According to 6, a fork assembly for a pallet truck includes: a forklift body 10, two sets of symmetrically arranged hydraulic rods 11 mounted on the front end of the forklift body 10, a fork carriage 12 connected to the front end of the hydraulic rods 11, the lower end of the fork carriage 12 being rotatably connected to the forklift body 10, a sliding backrest 13 mounted on the front end of the fork carriage 12, two forks 14 that are laterally movable and distributed on the front end of the backrest 13, each fork 14 including a slidable fork 40 mounted on the backrest 13, a fork 41 rotatably connected to the lower end of the slidable fork 40, the upper end of the fork 41 having a rounded end 42 and an abutment end 43, the rounded end 42 being on the same side as the extension direction of the fork 41, and the abutment end 43 being opposite to the extension direction of the fork 41, the abutment end 43 being able to engage with the slidable fork 40. The lower end face of 0 is attached, and the axis of the rounded end 42 is coaxially set with the rotating connection of the fork 40 and the fork 41. When the forklift body 10 moves to the work site, during the movement, the fork 41 is flipped forward so that the fork 41 is attached to the front part of the fork 40, thereby causing the fork 41 to flip upward and retract, so that the forklift body 10 can pass through narrow sections and prevent the fork 41 from hitting and getting stuck against the wall of the section. The flipping effect is achieved through the rounded end 42. During the working process, the fork 40 and the fork 41 are set at approximately ninety degrees to transport materials. During the working process, the material abuts against the top of the fork 41 and the front of the fork 40. At this time, the fork 41 is supported by abutting end 43 against the fork 40. During the working process, the support effect is achieved through abutting end 43.

[0034] A connecting frame 44 is fixedly installed at the lower end of the retaining rack 13. The connecting frames 44 are symmetrically arranged on the left and right. Two positioning rods 45 are provided between the two connecting frames 44, which are distributed vertically. The two positioning rods 45 pass through the support fork 40 and the fork 41 respectively. A threaded part 46 is threadedly connected between the positioning rods 45 and the connecting frame 44. The threaded part 46 is used to fix the connecting frame 44 and the positioning rod 45. A tube 47 is rotatably fitted on the outer periphery of the positioning rod 45 at the lower end. The left and right ends of the tube 47 abut against the close ends of the two connecting frames 44. An insert strip 48 is fixed on the outer periphery of the tube 47. The insert strip 48 extends horizontally and horizontally with the axial length of the tube 47. A fixing cylinder 49 is fixed on the fork 41. The fixing cylinder 49 is inserted and fitted with the insert strip 48. A slope 60 is provided on the front end face of the support fork 40. The upper part of the slope 60 in the vertical state of the support fork 40 is inclined backward. Two positioning rods 45 connect the fork 40 and the fork 41. The positioning rods 45 and the fork 40 slide together to achieve synchronous rotation of the two forks 40 and maintain the stability of the forks 40 sliding left and right at the backrest 13, improving the smoothness of sliding. The insert strip 48 on the insert tube 47 is inserted into the fixed tube 49 to achieve synchronous movement of the fork 41 as it moves left and right with the fork 40. During the flipping of the fork 41, the fixed tube 49 is inserted into the insert strip 48, and the fixed tube 49 is fixedly connected to the fork 41, achieving synchronous flipping of the two forks 41. After the fork 41 flips and abuts against the inclined surface 60 on the fork 40, in the vertical state of the fork carriage 12, the fork 41 is tilted backward under the support of the inclined surface 60, thereby preventing the fork 41 from swinging forward and colliding with external objects.

[0035] Reference Figure 2 and 4 Both forks 40 have insert blocks 50 fixedly installed at their rear ends. The backrest 13 includes a fixed frame 30 that slides vertically with the fork carriage 12. The fork carriage 12 and the fixed frame 30 are connected by a lifting mechanism. The lifting mechanism uses existing technology (such as hydraulic lifting to provide power, and chain pulleys to transmit and amplify the stroke). The fixed frame 30 has fixed rods 31 arranged laterally on the left and right sides. The left and right ends of the fixed rods 31 are rotatably connected to rotating frames 32. Push rods 33 are fixedly installed at the close ends of the two rotating frames 32. The fixed frame 30 has left and right openings. The slots 34 are evenly distributed, and the insert blocks 50 are inserted into the slots 34. By inserting the insert blocks 50 into the slots 34, the distance between the two front forks 14 can be adjusted before operation. By pushing the push rod 33 backward, the insert blocks 50 on the support fork 40 are disengaged from the slots 34. Under the connection of the positioning rod 45, the support fork 40 synchronously drives the two rotating frames 32 and the fixed rod 31 to rotate around the rotation axis. After pushing the support fork 40 left and right, the insert blocks 50 are inserted into the slots 34 at different positions to achieve position adjustment.

[0036] Reference Figure 6 A positioning wheel 51 is welded and fixed on the insert 48. A reinforcing rib is fixed in the middle part of the baffle 13. The thickness of the positioning wheel 51 is equal to or less than the thickness of the reinforcing rib. The positioning wheel 51 is located directly below the reinforcing rib. An insertion hole 54 is opened on the outer periphery of the positioning wheel 51. A sliding groove 53 is opened in the positioning rod 45 at the upper end. A sliding insert rod 52 is slidably connected in the sliding groove 53. The sliding insert rod 52 extends upward and passes through the positioning rod 45. A pull plate is fixed at the upper end of the sliding insert rod 52. The lower end of the sliding insert rod 52 can... The sliding rod 52 is inserted into the positioning wheel 51 through the insertion hole 54. A tension spring is connected between the sliding rod 52 and the side wall of the sliding groove 53. The tension spring provides downward tension to the sliding rod 52. After the fork 41 rotates, the fork 41 and the front end face of the support fork 40 are in contact. At this time, the insertion hole 54 rotates to the bottom of the sliding rod 52. Under the action of the tension spring, the sliding rod 52 moves downward and inserts into the insertion hole 54 to prevent the positioning wheel 51 from rotating, thereby stabilizing the flipping of the fork 41.

[0037] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A fork assembly for a pallet truck, comprising a forklift body (10), a hydraulic rod (11), a fork carriage (12), a stopper (13), and a fork (14), characterized in that: The fork (14) includes a support fork (40) that is slidably mounted on the rack (13). The lower end of the support fork (40) is rotatably connected to a fork (41). The part of the fork (41) that abuts against the support fork (40) is provided with a rounded end (42) and an abutting end (43). The abutting end (43) can abut against the lower end of the support fork (40). A connecting frame (44) is fixedly installed at the lower end of the support rack (13). Two positioning rods (45) are provided at the connecting frame (44) and distributed vertically. The two positioning rods (45) pass through the support fork (40) and the fork (41) respectively. A threaded part (46) is threadedly connected between the positioning rod (45) and the connecting frame (44). The threaded part (46) is used to fix the connecting frame (44) and the positioning rod (45). A tube (47) is rotatably fitted on the outer periphery of the positioning rod (45) at the lower end. A strip (48) is fixed on the outer periphery of the tube (47). A fixing cylinder (49) is fixed on the fork (41). The fixing cylinder (49) is inserted into the strip (48). A slope (60) is provided on the front end face of the support fork (40). The upper part of the slope (60) is inclined backward.

2. The fork assembly for a pallet truck according to claim 1, characterized in that: Both of the forks (40) are fixed with insert blocks (50) at their rear ends. The backrest (13) includes a fixed frame (30) that slides up and down with the fork carriage (12). The fork carriage (12) and the fixed frame (30) are connected by a lifting mechanism. The fixed frame (30) is fixed with a fixed rod (31) arranged horizontally on the left and right. The left and right ends of the fixed rod (31) are rotatably connected with a rotating frame (32). The two rotating frames (32) are fixed with push rods (33) at their close ends. The fixed frame (30) is provided with slots (34) evenly distributed on the left and right. The insert block (50) is inserted into the slot (34).

3. The fork assembly for a pallet truck according to claim 1, characterized in that: A positioning wheel (51) is welded onto the insert (48). An insertion hole (54) is provided on the outer periphery of the positioning wheel (51). A sliding groove (53) is provided in the positioning rod (45) located at the upper end. A sliding insert rod (52) is slidably connected in the sliding groove (53). The sliding insert rod (52) extends upward and passes through the positioning rod (45). A pull plate is fixed at the upper end of the sliding insert rod (52). The lower end of the sliding insert rod (52) can be inserted into the insertion hole (54). The lower end of the sliding insert rod (52) passes through the insertion hole (54) and is inserted into the positioning wheel (51). A tension spring is connected between the sliding insert rod (52) and the side wall of the sliding groove (53).

4. A fork assembly for a pallet truck according to claim 2, characterized in that: The connecting frame (44) is symmetrically arranged on the left and right and fixedly connected to the lower end of the rotating frame (32). The left and right ends of the insert (47) abut against the close ends of the two connecting frames (44). The insert (48) extends left and right with the same axial length as the insert (47).

5. A fork assembly for a pallet truck according to claim 3, characterized in that: The positioning wheel (51) is located in the middle part of the barrier shelf (13), and the middle part of the barrier shelf (13) is fixed with a reinforcing rib. The thickness of the positioning wheel (51) is equal to or less than the thickness of the reinforcing rib.

6. A fork assembly for a pallet truck according to claim 1, characterized in that: The rounded end (42) is arranged on the same side as the extension direction of the fork (41), the abutting end (43) is arranged in the opposite direction to the extension direction of the fork (41), and the axis of the rounded end (42) is coaxial with the rotational connection of the fork (40) and the fork (41).

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