Forklift pallet fork supporting frame

Abstract

The invention belongs to the technical field of forklifts, and discloses a forklift pallet fork supporting frame which comprises a pair of supporting units correspondingly installed on a pair of pallet forks, and each supporting unit comprises a pair of moving parts installed at the upper ends of the pallet forks at intervals and used for moving cargoes in the horizontal direction so as to adjust the gravity center of the cargoes; and the rotating parts are correspondingly mounted at the upper ends of the moving parts and used for supporting the goods and rotating the goods to adjust the gravity center of the goods. According to the forklift pallet fork supporting frame, the center-of-gravity position of goods can be adjusted through the CRG UNIT and the CRB UNIT, the center-of-gravity of the goods is kept at the center position, and therefore the goods can be safely moved and carried.

Description

Technical Field

[0001] This invention belongs to the field of forklift technology, and more specifically, relates to a forklift fork support frame. Background Technology

[0002] Forklifts are various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. They are flexible to drive, easy to operate, and can transport goods to designated locations.

[0003] When loading and unloading goods with a forklift, the forklift moves to the side of the goods, inserts the forks 400 from underneath, and lifts the goods. Depending on the shape of the goods, timber can be placed underneath, and slings can be used for further securing. The forklift then moves to the unloading point, where the forks are withdrawn from underneath to unload the goods. During the loading, unloading, stacking, and transporting of goods on pallets using a forklift, because the goods are supported by the two forks, if the goods are not neatly arranged, the center of gravity of the goods can shift, easily causing the goods to fall or the forklift to tip over during forklift movement. For example... Figure 1 In scenario a, if the goods are placed too far to the right, the center of gravity will shift to the right, potentially causing the goods to fall during the forklift movement. For example... Figure 1 In scenario b, if the goods are placed too far forward, the center of gravity will shift forward. Although the weight of the forklift body helps balance the weight of the goods from the rear, if the goods are placed too far forward and are heavy, the forklift's center of gravity may become unstable, potentially leading to a more serious tipping accident. Figure 1 In case c, if the goods are placed too far to the right and too far to the front, not only are the goods more likely to fall, but the forklift may also tip over.

[0004] It is evident that the placement of goods on the forks is crucial for lifting and transporting goods and forklift stability. Timely adjustment of the goods' center of gravity can reduce the risk of goods falling. However, currently, when using forklifts, it's difficult to adjust the goods' position to change the center of gravity after lifting them with the forks. Instead, counterweights are typically used to adjust the forklift's overall center of gravity. Counterweights increase the forklift's weight, reduce its efficiency, and only reduce the risk of tipping over; they do not effectively adjust the goods' center of gravity and therefore cannot reduce the risk of goods falling.

[0005] Therefore, there is a need for a forklift that can adjust the center of gravity of the goods so that the forklift can transport the goods smoothly. Summary of the Invention

[0006] [Technical Issues]

[0007] In order to solve the problems mentioned above, the purpose of this invention is to provide a forklift fork support frame that can not only adjust the center of gravity of the goods by moving in the horizontal direction, but also adjust the center of gravity of the goods by rotation, so as to safely move and transport goods.

[0008] [Technical Solution]

[0009] A forklift fork support bracket includes a pair of support units correspondingly mounted on a pair of forks, each support unit comprising:

[0010] A pair of movable parts are installed at intervals on the upper end of the forks for moving the goods horizontally to adjust the center of gravity of the goods;

[0011] A pair of rotating parts are installed on the upper ends of a pair of moving parts to support the cargo and rotate the cargo to adjust its center of gravity.

[0012] Optionally, each movable part includes a first movable bracket, a first sliding component mounted on the first movable bracket, a second movable bracket, and a second sliding component mounted on the second movable bracket.

[0013] The first movable bracket is fixedly mounted on the forks. The first sliding assembly includes a first slide rail and a first slider slidably mounted on the first slide rail. The second movable bracket is fixedly mounted on the top of the first slider. The second sliding assembly includes a second slide rail and a second slider slidably mounted on the second slide rail.

[0014] The sliding direction of the first slider is perpendicular to the sliding direction of the second slider.

[0015] Optionally, the sliding direction of the first slider is parallel or perpendicular to the length direction of the fork.

[0016] Optionally, both the first sliding component and the second sliding component are cross roller sliding components.

[0017] Optionally, the rotating part includes a vertical shaft and a bearing rotatably connected to the vertical shaft, the lower end of the vertical shaft being fixedly connected to the second slider.

[0018] Optionally, a support frame is also provided on the bearing, and the support frame is fixedly connected to the rotating component of the bearing.

[0019] Optionally, the bearing may be a crossed roller bearing.

[0020] Optionally, the rotating component of the bearing is the bearing outer ring, and the sidewall of the bearing outer ring is connected to the supporting frame by an annular concave-convex fit.

[0021] Optionally, the rotation angle of the pair of rotating parts relative to the cargo is within the range of ±3.2°.

[0022] Optionally, each support unit also includes a mounting base plate and a connecting plate. The connecting plate is placed below the forks, and the mounting base plate is placed above the forks. Multiple mounting holes are provided on the connecting plate and the mounting base plate in areas that extend beyond the width of the forks. The mounting base plate is fixedly mounted on the forks by passing a first bolt through the mounting holes of the mounting base plate and the connecting plate. The pair of moving parts are spaced apart and mounted on the upper end of the mounting base plate.

[0023] Optionally, a second strip groove is provided on the upper end of the first movable bracket. The second strip groove is horizontally parallel to the length direction of the fork or horizontally perpendicular to the length direction of the fork. A first sliding component is installed in the second strip groove. A third strip groove is provided on the top surface of the second movable bracket. The third strip groove is perpendicular to the second strip groove. A second sliding component is installed in the third strip groove.

[0024] Optionally, a second threaded through hole is provided on the side wall of the second strip groove of the first movable bracket and on the side wall of the third strip groove, and the preload of the cross roller sliding assembly is adjusted by passing a bolt through the second threaded through hole.

[0025] [Beneficial Effects]

[0026] The forklift fork support frame of this application can adjust the center of gravity of the goods using CRG UNIT, so that the center of gravity of the goods does not shift to one side, thereby enabling safe movement and handling.

[0027] This application utilizes two sets of CRG UNIT to adjust the center of gravity of the cargo in two directions, making it suitable for situations where the center of gravity of the cargo shifts in either direction.

[0028] The two CRG units in this application can move in opposite directions, thereby causing the cargo to rotate and adjusting the cargo's center of gravity.

[0029] This application also utilizes CRB UNIT, which allows the cargo to rotate easily when two CRG UNITs move in opposite directions, thus enabling further adjustment of the cargo's center of gravity position in conjunction with the moving part, allowing for more accurate and efficient adjustment of the cargo's center of gravity. Attached Figure Description

[0030] Figure 1 This is a schematic diagram showing the shift of the center of gravity of the goods on the forks.

[0031] Figure 2 This is a side view of the support unit according to an embodiment of this application.

[0032] Figure 3 This is a three-dimensional schematic diagram of the support unit according to an embodiment of this application.

[0033] Figure 4 This is an exploded view of the moving part according to an embodiment of this application.

[0034] Figure 5 This is a perspective view of the first movable bracket according to an embodiment of this application.

[0035] Figure 6 This is a three-dimensional schematic diagram of the first sliding component according to an embodiment of this application.

[0036] Figure 7 This is a schematic diagram showing the connection between the rotating part and the supporting frame in an embodiment of this application.

[0037] Figure 8 This is a three-dimensional schematic diagram of the vertical shaft according to an embodiment of this application.

[0038] Figure 9 This is a three-dimensional schematic diagram of a bearing according to an embodiment of this application.

[0039] Figure 10 This is a schematic diagram of the support frame according to an embodiment of this application.

[0040] Figure 11 This is a schematic diagram of the rotation adjustment center of gravity according to an embodiment of this application.

[0041] [Brief Explanation of the Labels in the Attached Figures]

[0042] 100: Mounting base plate 110: Connecting plate

[0043] 120: First bolt; 200: Moving part

[0044] 210: First movable bracket; 211: First strip groove

[0045] 212: First threaded through hole; 213: Second strip groove

[0046] 214: Second threaded through hole; 220: First sliding assembly

[0047] 221: First slide rail; 222: First slider

[0048] 230: Second movable bracket; 231: Third strip groove

[0049] 240: Second sliding component; 241: Second slide rail

[0050] 242: Second slider; 300: Rotating part

[0051] 310: Vertical shaft; 311: Chassis

[0052] 312: Shaft; 313: Second bolt

[0053] 314: Countersunk hole; 320: Bearing

[0054] 321: Inner ring; 322: Outer ring

[0055] 323: Third bolt; 324: Annular groove

[0056] 400: Forks; 500: Support Frame

[0057] 510: Annular protrusion; 520: Settling tank Detailed Implementation

[0058] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] This application provides a forklift fork support frame, including a pair of support units correspondingly mounted on a pair of forks. The support units can have identical structures; the following description primarily uses the structure of one support unit as an example. Please refer to... Figure 2 Each support unit includes a mounting base plate 100 for fixing the support unit to the forks 400; a pair of moving parts (CEG UNIT) 200, spaced apart on the mounting base plate 100, for moving the cargo in a horizontal or substantially horizontal direction to adjust the cargo's center of gravity; and a pair of rotating parts (CRB UNIT) 300, correspondingly mounted on the upper ends of the pair of moving parts 200, for supporting the cargo and rotating the cargo to adjust its center of gravity.

[0060] The mounting base plate 100 is a strip-shaped plate, and it is fixedly mounted on the top surface of the fork 400. For example, multiple mounting holes can be machined on the mounting base plate 100 and the fork 400, and the mounting base plate 100 can be fixedly mounted on the fork by bolts passing through the mounting holes on both the mounting base plate 100 and the fork 400. For example, the mounting base plate 100 can also be mounted on the fork without damaging it. See, for example, [reference needed]. Figure 3It also includes a connecting plate 110, which is positioned below the forks, and a mounting base plate 100, which is positioned above the forks 400. Multiple mounting holes are provided on the connecting plate 110 and the mounting base plate 100 in areas extending beyond the width of the forks. A first bolt 120 passes through these mounting holes in the mounting base plate 100 and the connecting plate 110, and is tightened with a nut, thereby fixing the mounting base plate 100 onto the forks 400. Multiple connecting plates can be provided. Figure 3 The mounting base plate 100 has connecting plates 110 at both ends, which are connected and fixed to the mounting base plate 100 by first bolts 120, so that the mounting base plate 100 can be more stably installed on the forks.

[0061] The following is combined with Figures 4 to 6 The structure of the moving part will be explained below. A pair of moving parts can have identical structures; only one will be used as an example. Figure 4 As shown, the movable part 200 includes a first movable bracket 210, a first sliding component 220 mounted on the first movable bracket 210, a second movable bracket 230, and a second sliding component 240 mounted on the second movable bracket 230.

[0062] The first movable bracket 210 is fixedly installed on the upper end of the mounting base plate 100, specifically, as shown in the figure. Figure 5 As shown, the first movable bracket 210 can be a rectangular block with a first strip groove 211 on its lower surface. The width of the first strip groove 211 is the same as or approximately the same as the width of the mounting base plate 100. The first strip groove 211 is fastened onto the mounting base plate 100. Multiple first threaded through holes 212 can be provided on the side wall of the first strip groove. By passing a bolt through the first threaded through hole 212 from the outside to the inside, the bolt end presses against the side of the mounting base plate 100, and the first movable bracket 210 can be fixed onto the mounting base plate 100.

[0063] It should be noted that the connection between the lower part of the first movable bracket 210 and the mounting base plate is merely exemplary. In practice, various connection methods can be used. For example, the first slot may not be necessary, and the first movable bracket 210 may be directly fixed to the mounting base plate using vertical fasteners. Alternatively, this application does not exclude the possibility of fixing it to the mounting base plate by welding.

[0064] In addition, the mounting base plate is not necessary; the moving part can be directly mounted on the forks, that is, the first moving bracket can be mounted on the forks.

[0065] A second slot 213 is provided at the upper end of the first movable bracket 210. The second slot 213 can be horizontally parallel to the length direction of the fork or horizontally perpendicular to the length direction of the fork. The third slot 231, referred to below, is horizontally perpendicular to the second slot. If the second slot 213 is horizontally parallel to the length direction of the fork, then the third slot 231 is horizontally perpendicular to the length direction of the fork. If the second slot 213 is horizontally perpendicular to the length direction of the fork, then the third slot 231 is horizontally parallel to the length direction of the fork. The second slot 213 will be described below as being horizontally perpendicular to the length direction of the fork.

[0066] A first sliding assembly 220 is installed within the second strip-shaped groove 213. The first sliding assembly 220 includes a pair of parallel, spaced-apart first slide rails 221, and a first slider 222 slidably mounted between the pair of first slide rails 221. The first slide rails 221 can be bolted into the second strip-shaped groove 213 and are arranged along the length of the second strip-shaped groove 213. Slide grooves can be provided on the opposite surfaces of the pair of first slide rails 221, and the sides of the first slider 222 are embedded in the slide grooves, allowing it to slide along the first slide rails 221. The first sliding assembly 220 enables horizontal movement of goods in one direction. Figure 4 The image shows movement along the Y direction.

[0067] A second movable bracket 230 is fixedly installed at the top of the first slider 222, so that the second movable bracket 230 can move with the first slider 222. The second movable bracket 230 can be fixedly installed at the top of the second slider 242 by fasteners such as bolts. The top surface of the second movable bracket 230 is provided with a third strip groove 231, which is perpendicular to the second strip groove.

[0068] A second sliding assembly 240 is installed in the third slot 231. The structure of the second sliding assembly 240 can be the same as that of the first sliding assembly 220. The second sliding assembly 240 includes a pair of parallel, spaced-apart second slide rails 241, and a second slider 242 slidably mounted between the pair of second slide rails 241. The second slide rails 241 can be bolted into the third slot 231 and are arranged along the length of the third slot 231. Grooves can be provided on the opposite surfaces of the pair of second slide rails 241, and the second slider 242 has protrusions on both sides that are embedded in the grooves, allowing it to slide along the second slide rails 241. The second sliding assembly 240 allows goods to move horizontally in one direction. Figure 4 The image shows movement along the X direction.

[0069] It should be noted that the arrangement of the slide rail and slider in the first and second sliding components described above, as well as the position and shape of the slide groove, are merely exemplary. This embodiment does not limit the position and shape of the slide rail and slide groove. For example, taking the second slider and the second slide rail as an example, the slide rail can be in the middle, and the slider can be on both sides of the slide rail, or the slider can surround the slide rail. The groove can be set on the side of the second slide rail, or it can be set on its top surface and bottom surface, as long as there is a corresponding protrusion to cooperate with it. Alternatively, a groove can be set on the second slider, and a protrusion can be set on the second slide rail, with the protrusion of the second slide rail embedded in the groove of the second slider. The cross-sectional shape of the slide groove can be square, circular, V-shaped, or other shapes.

[0070] For example, the first and second sliding components can employ a WRGW3050 cross-roller sliding assembly to achieve linear sliding functionality. The cross-roller sliding assembly has precision-ground ball retainers mounted on opposite sides of the second slide rail 241, with intersecting cylindrical balls arranged as protrusions on the ball retainers. V-shaped grooves are provided on both sides of the second slider 242, and the cylindrical balls are embedded within these grooves. This allows the second slider 242 to slide linearly along the second slide rail 241. The cross-roller sliding assembly, with its cross-shaped ball arrangement, features high load-bearing capacity, smooth sliding, and low noise. In some embodiments, second threaded through holes 214 are provided on the side wall of the second strip groove 213 of the first movable bracket 210 and on the side wall of the third strip groove 231. A bolt passes through the second threaded through hole 214 from the outside to the inside, and the top of the bolt presses against the side wall of the second slide rail to adjust the preload of the cross roller sliding assembly during installation. After adjusting the preload, the second slide rail can be fixed.

[0071] The movement range of the first and second moving components can be set within ±14mm (Max: 28mm). Constraining the movement distance reduces ineffective movement during center of gravity adjustment and avoids repeated large-amplitude adjustments. Correspondingly, a limit plate can be provided on the second slide rail to limit the movement distance of the second slider.

[0072] Support units are installed on both forks 400. The goods are supported on the moving part 200 of the support unit. The moving part 200 allows the goods to move in the horizontal XY direction, thereby adjusting the center of gravity of the goods.

[0073] It should be noted that in this embodiment, two moving parts 200 are installed on the same fork. The moving parts 200 can move in the same direction, for example, both moving to the right, thus adjusting the center of gravity of the cargo to the right. Alternatively, they can move in opposite directions, for example, one moving part moves to the left and the other moving part moves to the right, and the moving part of the other fork has the same movement, which causes the cargo to rotate and adjust the position of the cargo's center of gravity.

[0074] Furthermore, when the movement of the moving parts causes the goods to rotate, a rotating part 300 can be installed at the top of each moving part 200 to facilitate easy rotation. Specifically, since a pair of moving parts are installed on a fork 400, a rotating part 300 is correspondingly installed at the top of the second slider 242 of each moving part. This allows the rotating part to move with the moving parts in the XY direction, and the top of the rotating part can support the goods. The goods can also be rotated by the rotating part, thereby further adjusting the center of gravity of the goods.

[0075] The structure of each rotating part can be identical; the following explanation uses only one as an example. Please refer to [link / reference]. Figures 7 to 9 The rotating part 300 includes a vertical shaft 310 and a bearing 320 rotatably connected to the vertical shaft. The lower end of the vertical shaft 310 is fixedly connected to the second slider 242, and the bearing 320 includes a fixed component and a rotating component. The fixed component and the rotating component can rotate relative to each other. For example, the fixed component can be the inner ring of the bearing, and the rotating component can be the outer ring of the bearing. Alternatively, the fixed component can be the outer ring of the bearing, and the rotating component can be the inner ring of the bearing.

[0076] Specifically, the vertical shaft 310 includes a base 311 and an integrally connected shaft 312. The base 311 is fixedly connected to the top end of the second slider 242. For example, multiple countersunk holes 314 are provided on the base 311. The bearing 320 is rotatably mounted on the vertical shaft 310 by passing a second bolt 313 through the countersunk holes 314. Specifically, the second bolt 313 passes into the countersunk holes 314 to fix the inner ring 321 of the bearing 320 to the vertical shaft 310. The goods can be rotated by rotating the outer ring 322 of the bearing 320.

[0077] It should be noted that, in order to adapt to different cargo shapes, a support frame 500 can be set on the bearing 320. A countersunk hole is provided on the outer ring 322 of the bearing 320. A third bolt 323 is inserted into the countersunk hole of the outer ring 322 and screwed onto the support frame 500 to fix the support frame 500 to the outer ring of the bearing 320.

[0078] Alternatively, the outer ring of the bearing can be fixed to the vertical shaft 310, while the inner ring of the bearing can rotate, in which case the support frame 500 can be fixedly connected to the inner ring of the bearing.

[0079] In some embodiments, the sidewall of the bearing outer ring and the supporting frame can also be connected by an annular convex-concave fit, and the convex-concave fit can have a certain gap to facilitate rotational adjustment of the cargo's center of gravity. Please refer to... Figure 3 , Figure 7 , Figure 10 An annular groove 324 is provided on the outer circumference of the outer ring 322, and a recessed groove 520 is provided around the outer ring 322 at the lower end of the support frame 500. An annular protrusion 510 is provided on the inner circumference of the recessed groove 520. The annular protrusion 510 is embedded in the annular groove 324, which allows the support frame 500 to rotate smoothly with the bearing outer ring. Alternatively, a protrusion can be provided on the outer ring 322, and a recessed groove can be provided on the support frame 500.

[0080] Furthermore, both the upper and lower ends of the annular protrusion 510 and the annular groove 324 are chamfered.

[0081] Because the supporting frame 500 and the lower movable part are rotatably connected by bearings, the center of gravity of the supporting frame 500 and the goods supported on it can be adjusted more easily by coordinating the movement of the movable part with the rotation of the rotating part. Figure 11 As shown in Figure a, a pair of support units support the cargo 600 via a support frame 500. The support frame 500 is offset to the left (the straight arrow in the figure indicates the direction of the support frame's offset), meaning the cargo on it is offset to the left. This can be achieved by simultaneously moving the moving parts; specifically, for one fork, the upper moving part can move approximately to the right, and the lower moving part can move approximately to the left, with the moving part of the other fork also moving accordingly. At the same time, the two pairs of rotating parts 300 on the pair of support units rotate clockwise, rotating the support frame 500 relative to the center (the middle position of the two rotating parts) to the right by a certain angle, so that the center of gravity of the cargo remains at the center position of the pair of forks.

[0082] Similarly, such as Figure 11 As shown in Figure b, a pair of support units support the cargo 600 via a support frame 500. The support frame 500 is offset to the right, meaning the cargo on it is also offset to the right. This is achieved by simultaneously moving the moving parts—specifically, for one fork, the upper moving part moves approximately to the left, and the lower moving part moves approximately to the right, with the other fork's moving part correspondingly moving. Simultaneously, the counter-clockwise rotation of the two pairs of rotating parts 300 on the pair of support units rotates the support frame 500 relative to the center (the midpoint between the two rotating parts) to the left by a certain angle, ensuring the cargo's center of gravity remains at the center of the pair of forks.

[0083] For example, the bearing can be a crossed roller bearing, such as CRBFV2012ATUUT1. In a crossed roller bearing, the rollers between the inner and outer rings are arranged perpendicularly to each other at 90°. Spacers or separators are installed between the rollers to prevent tilting or friction between them, effectively preventing an increase in rotational torque. It can withstand large radial loads, axial loads, and moment loads in all directions.

[0084] It should be noted that when adjusting the center of gravity of the load, the support frame 500 of this application can operate with only the moving part, or with both the moving and rotating parts operating simultaneously, so that the center of gravity of the load reaches the position of the forklift fork center. In this embodiment, the range of the moving distance is ±14mm (Max: 28mm), and the range of the rotation angle is ±3.2° (Max: 6.4°). This method limits the adjustment angle of the support frame 500, preventing excessive rotation of the support frame 500 during the adjustment process, which would cause a large change in the center of gravity, resulting in over-adjustment and a tedious process of repeated adjustments.

[0085] In addition, when the device is not in use, the support frame 500 can be connected to the mounting base plate by bolts to prevent the rotating part from rotating.

[0086] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications are all within the protection scope of the claims of the present invention.

Claims

1. A forklift fork support bracket, characterized in that, Includes a pair of support units correspondingly mounted on a pair of forks, each support unit comprising: A pair of movable parts are spaced apart and mounted on the upper end of the forks for moving the goods horizontally to adjust the center of gravity of the goods; A pair of rotating parts are installed on the upper ends of a pair of moving parts to support the cargo and rotate the cargo to adjust its center of gravity.

2. The forklift fork support frame according to claim 1, characterized in that, Each movable part includes a first movable bracket, a first sliding assembly mounted on the first movable bracket, a second movable bracket, and a second sliding assembly mounted on the second movable bracket. The first movable bracket is fixedly mounted on the forks. The first sliding assembly includes a first slide rail and a first slider slidably mounted on the first slide rail. The second movable bracket is fixedly mounted on the top of the first slider. The second sliding assembly includes a second slide rail and a second slider slidably mounted on the second slide rail. The sliding direction of the first slider is perpendicular to the sliding direction of the second slider.

3. The forklift fork support frame according to claim 2, characterized in that, The sliding direction of the first slider is parallel or perpendicular to the length direction of the fork.

4. The forklift fork support frame according to claim 2, characterized in that, Both the first sliding component and the second sliding component adopt cross roller sliding components.

5. The forklift fork support frame according to claim 2, characterized in that, The rotating part includes a vertical shaft and a bearing rotatably connected to the vertical shaft, and the lower end of the vertical shaft is fixedly connected to the second slider.

6. The forklift fork support frame according to claim 5, characterized in that, A support frame is also provided on the bearing, and the support frame is fixedly connected to the rotating component of the bearing.

7. The forklift fork support frame according to claim 5, characterized in that, The bearing is a crossed roller bearing.

8. The forklift fork support frame according to claim 6, characterized in that, The rotating component of the bearing is the outer ring of the bearing, and the side wall of the outer ring of the bearing is connected to the supporting frame by an annular concave-convex fit.

9. The forklift fork support frame according to claim 5, characterized in that, The range of the rotation angle of the pair of rotating parts with respect to the cargo is ±3.2°.

10. The forklift fork support frame according to claim 1, characterized in that, Each support unit also includes a mounting base plate and a connecting plate. The connecting plate is placed below the forks, and the mounting base plate is placed above the forks. Multiple mounting holes are provided on the connecting plate and the mounting base plate in areas that extend beyond the width of the forks. The mounting base plate is fixedly mounted on the forks by passing a first bolt through the mounting holes of the mounting base plate and the connecting plate. The pair of moving parts are spaced apart and mounted on the upper end of the mounting base plate.

11. The forklift fork support frame according to claim 4, characterized in that, A second strip groove is provided at the upper end of the first movable bracket. The second strip groove is horizontally parallel to the length direction of the fork or horizontally perpendicular to the length direction of the fork. A first sliding component is installed in the second strip groove. A third strip groove is provided on the top surface of the second movable bracket. The third strip groove is perpendicular to the second strip groove. A second sliding component is installed in the third strip groove.

12. The forklift fork support frame according to claim 11, characterized in that, Second threaded through holes are provided on the side wall of the second strip groove of the first movable bracket and on the side wall of the third strip groove. The preload of the cross roller sliding assembly is adjusted by passing a bolt through the second threaded through hole.

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