Goods limiting and guiding device for forks of forklift and logistics elevator and using method of goods limiting and guiding device

Abstract

The invention discloses a goods limiting and guiding device for forks of forks and logistics elevators. The goods limiting and guiding device comprises a connecting plate; the left pallet fork limiting assembly is arranged on the first pallet fork in a sleeving manner; the right pallet fork limiting assembly is arranged on the second pallet fork in a sleeving manner; wherein the left pallet fork limiting assembly and the right pallet fork limiting assembly are symmetrically arranged at the two ends of the connecting plate, and the first pallet fork is sleeved with the pallet fork limiting body. The invention further provides a using method of the goods limiting and guiding device for the forks of the forklift and the logistics elevator. Compared with the prior art, the problems that due to the fact that forks of forks of forks and logistics elevators are lack of limiting and guiding devices, goods cannot be accurately limited, the placement position is inaccurate, and the goods collide with equipment are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cargo fork limit devices, and in particular to a cargo limit guide device for a forklift or a logistics elevator cargo fork and a use method thereof. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. Forklifts lift and support goods with forks. Existing forklifts lack adjustable cargo limit devices on their forks, and can only limit the position of the forked goods by the fork frame at the root of the fork. Forklifts cannot accurately limit the position of goods that are only forked at the front end of the fork.

[0003] In addition, similar to the working process of the forklift's cargo fork, the logistics elevator's cargo fork lacks a limit device for the cargo. During the use of the logistics elevator's cargo fork, if the cargo is placed in different positions outside the elevator car, the cargo will be in different positions on the fork after the logistics elevator's cargo fork picks up the cargo, and the cargo transported from the elevator car to another floor will also be placed in a different position, which can easily cause the cargo to rub against the equipment inside and outside the car, and can also easily lead to many problems such as personal safety accidents and the inability to accurately place the cargo. Summary of the invention

[0004] The purpose of the present invention is to provide a cargo limiting guide device for forklifts and logistics elevator forks and a method of use, so as to solve the problems of cargo not being able to be accurately limited, inaccurately placed, and cargo rubbing against equipment due to the lack of limiting guide devices on the forks of forklifts and logistics elevators.

[0005] In order to achieve the above-mentioned object, on the one hand, the present invention provides a cargo limiting guide device for a forklift or a logistics elevator fork, comprising:

[0006] Connecting plate;

[0007] A left fork limit assembly, which is mounted on the first fork;

[0008] A right fork limiter assembly, which is mounted on the second fork;

[0009] Among them, the left fork limit assembly and the right fork limit assembly are symmetrically arranged at both ends of the connecting plate. The left fork limit assembly includes a fork limit body, an upper positioning bolt, an upper locking nut, a side locking nut, a side positioning bolt and a frosted plate. The fork limit body is detachably installed on the connecting plate. The fork limit body is a "C"-shaped structure. Both sides of the lower end opening of the fork limit body are provided with symmetrically arranged fixed wings, and the inner upper surface of the fixed wings is provided with anti-slip teeth;

[0010] The fork limiting body is mounted on the first fork, the upper positioning bolt is threadedly connected to the fork limiting body, the upper positioning bolt passes through the fork limiting body and extends into the blind hole of the frosted plate, the lower surface of the frosted plate is provided with a frosted surface, the upper locking nut is threadedly connected to the upper positioning bolt, the side positioning bolt is threadedly connected to the fork limiting body, the end of the side positioning bolt extends into the interior of the fork limiting body, and the end face of the side positioning bolt contacts the side wall of the first fork, and the side positioning bolt is threadedly connected to the side locking nut.

[0011] On the other hand, the present invention also provides a method for using a cargo position limiting guide device for a forklift or a logistics elevator fork, comprising the following steps:

[0012] S1. Install the left fork limit assembly on the first fork and the right fork limit assembly on the second fork, and adjust them to the position required for positioning the goods, and the left fork limit assembly and the right fork limit assembly are in a straight line;

[0013] S2. Fix the connecting plate to the left fork limit assembly and the right fork limit assembly, and the upper positioning bolt passes through the connecting plate and is threadedly connected to the fork limit body;

[0014] S3, rotating the upper positioning bolt so that the lower end of the upper positioning bolt squeezes the frosted plate, so that the frosted surface of the frosted plate closely fits the upper surface of the first fork, and then rotating the upper locking nut to fit the fork limiter, locking the upper positioning bolt, and the anti-slip teeth on the upper surface of the inner side of the fixed wing of the fork limiter contact the lower surface of the first fork;

[0015] S4. Rotate the side positioning bolt so that the end of the side positioning bolt abuts against the side surface of the first fork.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. In the present invention, the cargo limiting guide device has a novel structure, reliable performance, and is easy to install and debug. It has a wide range of applications and can be flexibly combined according to the actual situation on site. It can reliably and effectively solve many problems such as collision between cargo and equipment, inaccurate placement of cargo each time, etc., and can effectively avoid accidents.

[0018] 2. In the present invention, the limit guide device is arranged at the fork of the forklift and the logistics elevator, and the position can be adjusted as needed, which can effectively limit the corresponding position of the goods on the fork, and the relative position of the device on the fork can be adjusted as needed, so as to adjust the corresponding position of the goods on the fork, so that the goods forked each time are at the same position on the fork.

[0019] 3. In the present invention, the connecting plate and the left fork limiting assembly and the right fork limiting assembly in the limiting guide device adopt a combined structure, and the upper positioning bolts for locking the left fork limiting assembly, the right fork limiting assembly and the fork are used to realize the installation of the two fork limiting assemblies and the connecting plate, thereby simplifying the connection structure and facilitating disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The present invention is a structural schematic diagram of a first scheme of a cargo limit guide device for forklifts and logistics elevator forks.

[0022] Figure 2 The present invention is a structural schematic diagram of a left cargo fork limit assembly in a cargo limit guide device for a forklift or a logistics elevator cargo fork.

[0023] Figure 3 The present invention is a structural schematic diagram of a first cargo fork limiting body in a cargo limiting guide device for a forklift or a logistics elevator cargo fork.

[0024] Figure 4 The present invention is a structural schematic diagram of a second cargo fork limiting body in a cargo limiting guide device for a forklift or a logistics elevator cargo fork.

[0025] Figure 5 The present invention is a structural schematic diagram of a first connecting plate in a cargo limiting guide device for a forklift or a logistics elevator fork.

[0026] Figure 6 The present invention is a structural schematic diagram of a second scheme of a cargo limit guide device for forklifts and logistics elevator forks.

[0027] Figure 7 The present invention is a structural schematic diagram of a second connecting plate in a cargo limiting guide device for a forklift or a logistics elevator fork.

[0028] Figure 8 The present invention is a structural schematic diagram of a frosted plate in a cargo limiting guide device for a forklift or a logistics elevator fork.

[0029] Fig. 9 The utility model discloses a forklift fork application schematic diagram of a cargo limit guide device for a forklift and a logistics elevator fork.

[0030] Legend:

[0031] 1-left fork limit assembly, 2-first connecting plate, 3-first fork limit body, 4-upper positioning bolt, 5-upper locking nut, 6-side locking nut, 7-side positioning bolt, 8-anti-slip teeth, 9-fixed wing, 10-first screw hole, 11-second screw hole, 12-first limit platform, 13-first fixed wing, 14-adjustment hole, 15-second limit platform, 16-first rib plate, 17-second connecting plate, 18-second fixed wing, 19-fixed hole, 20-second rib plate, 21-third limit platform, 22-frosted plate, 23-blind hole, 24-frosted surface, 25-forklift left fork, 26-cargo, 29-right fork limit assembly, 30-second fork limit body, 31-guide ear, 32-forklift right fork. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example 1

[0038] See also Figure 1-9 On the one hand, the present invention provides a cargo limiting guide device for a forklift or a logistics elevator fork, comprising:

[0039] Connecting plate;

[0040] A left fork limit assembly 1, which is mounted on the first fork;

[0041] A right fork limit assembly 29, which is mounted on the second fork;

[0042] Among them, the left fork limit assembly 1 and the right fork limit assembly 29 are symmetrically arranged at both ends of the connecting plate. The left fork limit assembly 1 includes a fork limit body, an upper positioning bolt 4, an upper locking nut 5, a side locking nut 6, a side positioning bolt 7 and a frosting plate 22. The fork limit body is detachably installed on the connecting plate. The fork limit body is in a "C" shape. Both sides of the lower end opening of the fork limit body are provided with symmetrically arranged fixed wings 9. The inner upper surface of the fixed wing 9 is provided with anti-slip teeth 8. The fork limit body is sleeved on On the first fork, the upper positioning bolt 4 is threadedly connected to the fork limiting body, and the upper positioning bolt 4 passes through the fork limiting body and extends into the blind hole 23 of the frosting plate 22. The lower surface of the frosting plate 22 is provided with a frosted surface 24. The upper locking nut 5 is threadedly connected to the upper positioning bolt 4, and the side positioning bolt 7 is threadedly connected to the fork limiting body. The end of the side positioning bolt 7 extends into the interior of the fork limiting body, and the end face of the side positioning bolt 7 contacts the side wall of the first fork. The side positioning bolt 7 is threadedly connected to the side locking nut 6.

[0043] When the right fork limiting assembly 29 and the left fork limiting assembly 1 adopt the first fork limiting body 3 with the guide ear 31, the two assemblies are symmetrical to each other; when the second fork limiting body 30 is adopted, the two assemblies are identical.

[0044] The limit guide device is set at the fork of the forklift and logistics elevator. The position can be adjusted as needed, which can effectively limit the corresponding position of the goods on the fork, and the relative position of this device on the fork can be adjusted as needed, so as to adjust the corresponding position of the goods on the fork, so that the goods forked each time are in the same position on the fork.

[0045] The limit guide device is particularly suitable for logistics elevator forks to ensure that the goods are in the same position on the forks every time they are received, thereby ensuring that the goods can be placed in the same position outside the logistics elevator every time they are shipped.

[0046] At the same time, the limiting guide device can also be applied to other places in the mechanical field where it is necessary to prevent the displacement of objects.

[0047] The fork limiter includes a first fork limiter 3 and a second fork limiter 30. The first fork limiter 3 has a first screw hole 10 for connecting the side positioning bolt 7, and the top of the first fork limiter 3 has a second screw hole 11. The front end of the first fork limiter 3 has a first limiter 12, and one side of the first limiter 12 has a guide ear 31. Figure 3 , Figure 4 As shown, the second fork limiting body 30 is different from the first fork limiting body 3 in that the second fork limiting body 30 lacks the guide ear 31 , and the other parts are completely the same.

[0048] The guide ear 31 can guide and locate the cargo in a direction perpendicular to the fork when the cargo is loaded into the fork, so that the cargo can be placed in the same position every time.

[0049] The connecting plate can be in different forms. Specifically, the connecting plate includes a first connecting plate 2 and a second connecting plate 17 .

[0050] The first one:

[0051] like Figure 5 As shown, the first connecting plate 2 includes a second limit platform 15, a first rib plate 16, a first fixed wing 13 and an adjustment hole 14. The second limit platform 15 contacts the cargo, the first rib plate 16 is arranged on the rear side of the second limit platform 15, and symmetrically arranged first fixed wings 13 are arranged on both sides of the second limit platform 15, and the first fixed wing 13 is provided with an adjustment hole 14.

[0052] A first rib plate 16 for reinforcement is arranged behind the second limiting platform 15 to prevent the second limiting platform 15 from deformation. The first fixing wings 13 symmetrical about the center on the left and right sides fix the fork limiting body through the adjustment hole 14 .

[0053] When the limiting device adopts the first connecting plate 2, the distance between the left fork limiting assembly 1 and the right fork limiting assembly 29 can be adjusted as needed.

[0054] Second type:

[0055] The second connecting plate 17 includes a third limiting platform 21 , a second rib plate 20 , a second fixing wing 18 and a fixing hole 19 . The second rib plate 20 is disposed at the rear side of the third limiting platform 21 , and the fixing hole 19 is disposed on the second fixing wing 18 .

[0056] like Figure 6 , Figure 7 As shown, when the limiting device adopts the second connecting plate 17, the side positioning bolt 7 passes through the fixing holes 19 on the side surfaces of the left and right second fixing wings 18 of the second connecting plate 17, and is screwed into the first screw hole 10 on the side surface of the first fork limiting body 3 of the left fork limiting assembly 1 and the right fork limiting assembly 29, so that the front end thereof tightly presses against the side surface of the left fork 25 and the right fork 32 of the forklift, so that the first fork limiting body 3 and the left fork 25 and the right fork 32 of the forklift are firmly fixed together without mutual displacement, and are locked with the side locking nut 6.

[0057] When the limiting device uses the second connecting plate 17 , the distance between the left fork limiting assembly 1 and the right fork limiting assembly 29 is fixed and cannot be adjusted, and the rest is the same as when the first connecting plate 2 is used.

[0058] On the other hand, the present invention also provides a method for using a cargo position limiting guide device for a forklift or a logistics elevator fork, comprising the following steps:

[0059] S1. Mount the left fork limit assembly 1 on the first fork and the right fork limit assembly 29 on the second fork, and adjust them to the position required for positioning the goods, and the left fork limit assembly 1 and the right fork limit assembly 29 are in a straight line;

[0060] S2, fix the connecting plate to the left fork limit assembly 1 and the right fork limit assembly 29, and the upper positioning bolt 4 passes through the connecting plate and is threadedly connected to the fork limit body;

[0061] S3, rotate the upper positioning bolt 4 so that the lower end of the upper positioning bolt 4 squeezes the frosted plate 22, so that the frosted surface 24 of the frosted plate 22 is closely attached to the upper surface of the first fork, and then rotate the upper locking nut 5 to fit the fork limiter, lock the upper positioning bolt 4, and the anti-slip teeth 8 on the inner upper surface of the fixed wing 9 on the fork limiter contact the lower surface of the first fork;

[0062] S4, rotating the side positioning bolt 7 so that the end of the side positioning bolt 7 abuts against the side surface of the first fork.

[0063] The connecting plate and the left fork limiting assembly 1 and the right fork limiting assembly 29 in the limiting guide device adopt a combined structure, and the upper positioning bolt 4 for locking the left fork limiting assembly 1 and the right fork limiting assembly 29 with the fork is used to realize the installation of the two fork limiting assemblies and the connecting plate, thereby simplifying the connection structure and facilitating disassembly and assembly.

[0064] Taking the locking of the left fork limit assembly 1 and the first fork as an example, the downward pressure of the upper positioning bolt 4 makes the frosted surface 24 of the frosted plate 22 fit closely to the upper surface of the first fork, and the anti-slip teeth 8 on the inner upper surface of the fixed wing 9 on the fork limit body contact the lower surface of the first fork, while the side positioning bolt 7 rotates to the end to support the side surface of the first fork, fully locking the relative position of the fork limit body and the first fork to prevent the relative position from changing, effectively blocking the goods. The locking of the right fork limit assembly 29 and the second fork is similar.

[0065] Working principle: See attached Fig. 9 , forklift forks use example.

[0066] The left fork limit assembly 1 and the right fork limit assembly 29 are respectively inserted into the forklift left fork 25 and the forklift right fork 32 and adjusted to the required position. The first connecting plate 2 is placed on the upper surface of the left fork limit assembly 1 and the right fork limit assembly 29, and the upper positioning bolt 4 is passed through the first connecting plate 2. The corresponding adjustment holes 14 on the upper surfaces of the left and right first fixed wings 13 symmetrical about the center are screwed into the first fork limit body 3 (such as Figure 3 The lower end of the second screw hole 11 on the back of the grinding plate 22 (as shown) Figure 8 The frosted surface 24 of the frosted plate 22 is tightly attached to the upper surface of the left fork 25 and the right fork 32 of the forklift, and then locked with the upper locking nut 5, so that the first connecting plate 2 is connected to the left fork limit assembly 1 and the right fork limit assembly 29 as a whole. Due to the downward pressure of the upper positioning bolt 4, the first fork limit body 3 moves upward. Since the two sides of the lower end opening of the first fork limit body 3 have fixed wings 9 to limit the upward movement, the anti-slip teeth 8 on the inner upper surface of the fixed wings 9 firmly grasp the lower surface of the left fork 25 and the right fork 32 of the forklift, so that it does not move. After that, the cargo 26 is placed on the left fork 25 and the right fork 32 of the forklift.

[0067] At this time, the left fork 25 of the forklift is the first fork, and the right fork 32 of the forklift is the second fork.

[0068] The present invention provides a cargo position limiting guide device for forks of forklifts and logistics elevators and a method for using the device, which can effectively limit the corresponding position of cargo on the forks, and can adjust the relative position of the device on the forks as needed, thereby adjusting the corresponding position of cargo on the forks, so that the cargo forked each time is at the same position on the forks.

[0069] This device is particularly suitable for logistics elevator forks to ensure that each incoming cargo is in the same position on the forks, thereby ensuring that each outgoing cargo can be placed in the same position outside the logistics elevator.

[0070] This device can effectively solve many problems such as the inability to accurately limit the position of goods, inaccurate placement, collision between goods and equipment, and accidents.

[0071] Example 2

[0072] This embodiment further provides the following improved technical solution based on the above embodiment: two photoelectric sensors arranged in parallel are provided on the connecting plate, and the photoelectric sensors are used to detect the distance between the connecting plate and the goods on the fork.

[0073] On the one hand, the distance data detected by the two photoelectric sensors can be used to determine whether the goods on the forks are placed in place; on the other hand, the difference in distance data obtained by the two photoelectric sensors can be calculated to determine the posture of the goods on the forks, monitor whether the goods are sliding, and avoid falling.

[0074] Example 3

[0075] This embodiment further provides the following improved technical solutions based on the above embodiments: the logistics elevator fork is installed in the elevator car and is located at the lower part of the car. The method of using this limit device on the logistics elevator fork is the same as the method of using it on the forklift left fork 25 and the forklift right fork 32.

[0076] At this time, the left fork of the logistics elevator is the first fork, and the right fork of the logistics elevator is the second fork.

[0077] Example 4

[0078] This embodiment further makes the following improved technical solution on the basis of the above embodiment: this limit device may not use the first connecting plate 2 or the second connecting plate 17, and may use the left fork limit assembly 1, the right fork limit assembly 29 alone or the left fork limit assembly 1 and the right fork limit assembly 29 together.

[0079] When the left fork limiting assembly 1 and the right fork limiting assembly 29 adopt the second fork limiting body 30, the two assemblies are the same, and one or more assemblies can be used at the same time.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cargo position limiting guide device for a forklift or a logistics elevator fork, characterized in that: include: Connecting plate; A left fork limit assembly, which is mounted on the first fork; A right fork limiter assembly, which is mounted on the second fork; Wherein, the left fork limit assembly and the right fork limit assembly are symmetrically arranged at both ends of the connecting plate, the left fork limit assembly comprises a fork limit body, an upper positioning bolt, an upper locking nut, a side locking nut, a side positioning bolt and a grinding plate, the fork limit body is detachably mounted on the connecting plate, the fork limit body is in a "C"-shaped structure, and symmetrically arranged fixed wings are arranged on both sides of the lower end opening of the fork limit body, and anti-slip teeth are arranged on the inner upper surface of the fixed wing; The fork limiting body is sleeved on the first fork, the upper positioning bolt is threadedly connected to the fork limiting body, the upper positioning bolt passes through the fork limiting body and then extends into the blind hole of the frosted plate, the lower surface of the frosted plate is provided with a frosted surface, the upper locking nut is threadedly connected to the upper positioning bolt, the side positioning bolt is threadedly connected to the fork limiting body, the end of the side positioning bolt extends into the interior of the fork limiting body, and the end face of the side positioning bolt contacts the side wall of the first fork, and the side positioning bolt is threadedly connected to the side locking nut.

2. A cargo position limiting guide device for a forklift or a logistics elevator fork according to claim 1, characterized in that: The fork limiting body includes a first fork limiting body and a second fork limiting body, a first screw hole for connecting a side positioning bolt is arranged on the side of the first fork limiting body, a second screw hole is arranged on the top surface of the first fork limiting body, a first limiting platform is arranged at the front end of the first fork limiting body, and a guide ear is arranged on one side of the first limiting platform.

3. A cargo position limiting guide device for a forklift or a logistics elevator fork according to claim 1, characterized in that: The connecting plate includes a first connecting plate and a second connecting plate.

4. A cargo position limiting guide device for a forklift or a logistics elevator fork according to claim 3, characterized in that: The first connecting plate includes a second limit platform, a first rib plate, a first fixed wing and an adjustment hole. The second limit platform contacts the cargo. The first rib plate is arranged on the rear side of the second limit platform. The first fixed wings are symmetrically arranged on both sides of the second limit platform. The adjustment hole is arranged on the first fixed wing.

5. The cargo position limiting guide device for forklifts and logistics elevator forks according to claim 3, characterized in that: The second connecting plate includes a third limiting platform, a second rib plate, a second fixing wing and a fixing hole. The second rib plate is arranged at the rear side of the third limiting platform, and the fixing hole is arranged on the second fixing wing.

6. The cargo position limiting guide device for forklifts and logistics elevator forks according to claim 1, characterized in that: Two photoelectric sensors arranged in parallel are arranged on the connecting plate, and the photoelectric sensors are used to detect the distance between the connecting plate and the goods on the fork.

7. A method for using the cargo position limiting guide device for a forklift or a logistics elevator fork according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Install the left fork limit assembly on the first fork and the right fork limit assembly on the second fork, and adjust them to the position required for positioning the goods, and the left fork limit assembly and the right fork limit assembly are in a straight line; S2. Fix the connecting plate to the left fork limit assembly and the right fork limit assembly, and the upper positioning bolt passes through the connecting plate and is threadedly connected to the fork limit body; S3, rotating the upper positioning bolt so that the lower end of the upper positioning bolt squeezes the frosted plate, so that the frosted surface of the frosted plate closely fits the upper surface of the first fork, and then rotating the upper locking nut to fit the fork limiter, locking the upper positioning bolt, and the anti-slip teeth on the upper surface of the inner side of the fixed wing of the fork limiter contact the lower surface of the first fork; S4. Rotate the side positioning bolt so that the end of the side positioning bolt abuts against the side surface of the first fork.

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