CN220265156U

CN220265156U - Fork assembly and forklift

Info

Publication number: CN220265156U
Application number: CN202321401717.8U
Authority: CN
Inventors: 袁伟; 那耀宗; 龙昊天
Original assignee: Hangzhou Hikrobot Co Ltd
Current assignee: Hangzhou Hikrobot Co Ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-12-29
Anticipated expiration: 2033-06-02

Abstract

The application belongs to fork mounting structure technical field, concretely relates to fork assembly and fork truck. The fork assembly comprises a fork frame, a fork and a locking mechanism, wherein a first sliding part is arranged on the fork frame, a second sliding part is arranged on the fork, the first sliding part is in sliding fit with the second sliding part, the locking mechanism is provided with a first position and a second position, and the locking mechanism presses the fork frame to lock the fork frame and the fork under the condition that the locking mechanism is positioned at the first position, so that the first sliding part and the second sliding part are relatively fixed; in the case where the locking mechanism is located at the second position, the locking mechanism releases the fork frame to slide the fork along the first sliding portion. The problem that the position of the fork can not be adjusted steplessly, and the position of the fork is fixed in the correlation technique is comparatively troublesome can be solved to this application.

Description

Fork assembly and forklift

Technical Field

The application belongs to fork mounting structure technical field, concretely relates to fork assembly and fork truck.

Background

The forklift can be used for loading and unloading cargoes, stacking and short-distance transportation operation, and comprises a fork frame and a fork, wherein the fork frame is used for installing the fork.

In the related art, the fork frame comprises a sliding beam, a plurality of bosses are arranged at the top of the sliding beam at intervals along the extending direction of the sliding beam, and a sliding groove is arranged at the upper end of the fork and is in sliding fit with the bosses so as to enable the fork to slide along the sliding beam; a groove is formed between two adjacent bosses, a locating pin is arranged at the top of the fork, and the locating pin is detachably arranged in the groove. When the position of the fork is adjusted, the positioning pin can be separated from the groove, and the position of the fork can be adjusted by poking the fork; when the forks are slid into place, the dowel pins may be inserted into the grooves to hold the forks stationary relative to the fork carriage.

Because the groove in the related art is positioned between two adjacent bosses, after the position of the fork is adjusted, the positioning pin possibly interferes with the bosses and cannot be inserted into the groove, so that the position of the fork needs to be adjusted again, the positioning pin can be inserted into the groove, the position of the fixed fork can be troublesome, and the stepless adjustment of the position of the fork cannot be realized.

Disclosure of Invention

The embodiment of the application aims to provide a fork assembly and a forklift, which can solve the problems that the position of a fork cannot be adjusted steplessly and the position of the fork is troublesome to fix in the related art.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, embodiments of the present application provide a fork assembly including a fork frame, a fork, and a locking mechanism, wherein the fork frame is provided with a first sliding portion, the fork is provided with a second sliding portion, the first sliding portion is slidably engaged with the second sliding portion,

the locking mechanism is provided with a first position and a second position, and in the condition that the locking mechanism is positioned at the first position, the locking mechanism presses the fork frame to lock the fork frame and the fork so as to enable the first sliding part and the second sliding part to be relatively fixed; in the case where the locking mechanism is located at the second position, the locking mechanism releases the fork frame to slide the fork along the first sliding portion.

In a second aspect, an embodiment of the present application further provides a forklift, including the fork assembly described above.

In the embodiment of the application, the fork assembly comprises a fork frame, a fork and a locking mechanism, when the position of the fork is adjusted, the locking mechanism is controlled to be positioned at a second position, and then the fork can be stirred, so that the fork slides along the first sliding part; when the fork slides to the target position, the locking mechanism is controlled to be located at the first position, and the fork frame is pressed by the locking mechanism, so that the fork and the fork frame are kept relatively static, and the position between the fork and the fork frame is fixed. Therefore, the locking mechanism can press the fork frame, that is, the locking mechanism can apply an acting force to the fork, the acting force is perpendicular to the sliding direction of the fork, and the fork frame and the fork can be locked through the acting force, so that grooves in the related art are not required to be arranged on the fork frame, and the problems that the related art cannot adjust the position of the fork steplessly and the position of the fork is troublesome to fix can be solved.

Drawings

FIG. 1 is a side view of a first fork assembly according to an embodiment of the present disclosure;

FIG. 2 is a front view of a first pallet fork assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of FIG. 2A of the present application;

FIG. 4 is a side view of a clamping member disclosed in an embodiment of the present application;

FIG. 5 is a side view of a second pallet fork assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of the present application at B in FIG. 5;

FIG. 7 is a front view of a second pallet fork assembly according to an embodiment of the present disclosure;

fig. 8 is a schematic cross-sectional view of fig. 7C of the present application.

Reference numerals illustrate:

100-fork frame, 110-first sliding part, 200-fork, 210-second sliding part, 211-second force application inclined plane, 310-pushing piece, 311-first force application inclined plane, 320-clamping piece, 321-deformation opening, 322-first stress inclined plane, 323-second stress inclined plane, 330-first threaded connecting piece, 340-fixed seat, 350-locking block, 360-second threaded connecting piece, 400-fixed rod piece and 500-third threaded connecting piece.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings of the embodiments of the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The fork assembly and the forklift provided by the embodiment of the application are described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 1 to 8, the embodiment of the present application discloses a fork assembly, which includes a fork frame 100, a fork 200 and a locking mechanism, wherein the fork frame 100 is a basic component of the fork assembly, and may provide a mounting base for the fork 200 and the locking mechanism. The fork frame 100 is provided with a first sliding part 110, the fork 200 is provided with a second sliding part 210, the first sliding part 110 is in sliding fit with the second sliding part 210, and when the first sliding part 110 and the second sliding part 210 slide relatively, the position of the fork 200 relative to the fork frame 100 can be changed, so that the position of the fork 200 can be adjusted. When the number of the forks 200 is at least two, the distance between the adjacent forks 200 can be adjusted by sliding the forks 200, thereby facilitating the support of the cargo. The locking mechanism has a first position and a second position, and in the case that the locking mechanism is located at the first position, the locking mechanism presses the fork carriage 100 to lock the fork carriage 100 and the fork 200 so that the first sliding portion 110 and the second sliding portion 210 are relatively fixed; with the locking mechanism in the second position, the locking mechanism releases the fork carriage 100 to slide the fork 200 along the first slide 110. The overall position of the locking mechanism may be varied to switch between the first and second positions, or the position of a portion of the components contained within the locking mechanism may be varied to switch the locking mechanism between the first and second positions.

In this embodiment, the fork assembly includes a fork frame 100, a fork 200 and a locking mechanism, when the position of the fork 200 is adjusted, the locking mechanism is controlled to be located at the second position, and then the fork 200 can be shifted, so that the fork 200 slides along the first sliding portion 110; when the fork 200 is slid to the target position, the locking mechanism is controlled to be in the first position, and the locking mechanism presses the fork carriage 100, so that the fork 200 and the fork carriage 100 are kept relatively stationary, and the position between the fork 200 and the fork carriage 100 is fixed. Therefore, the locking mechanism of the embodiment of the present application can press the fork frame 100, that is, the locking mechanism can apply a force to the fork 200 in a direction perpendicular to the sliding direction of the fork 200, and the fork frame 100 and the fork 200 can be locked by the force, so that the fork frame 100 does not need to be provided with a groove in the related art, and further the problems that the related art cannot perform stepless adjustment on the position of the fork 200 and the position of the fixed fork 200 is troublesome can be solved.

In an alternative embodiment, referring to fig. 1 to 4, the first sliding portion 110 is a sliding shaft, and the locking mechanism is connected to the fork 200, and presses the outer circumferential surface of the first sliding portion 110 in the case that the locking mechanism is located at the first position; in the case where the locking mechanism is located at the second position, the locking mechanism releases the outer peripheral surface of the first sliding portion 110. In this embodiment, the locking mechanism can press the outer peripheral surface of the first sliding portion 110 to fix the first sliding portion 110 and the second sliding portion 210 relatively, so that the object locked by the locking mechanism is a component for moving the fork 200 relative to the fork frame 100, that is, no additional component is needed to lock, so that the structure of the fork assembly can be simplified, the processing difficulty of the fork assembly can be reduced, and the processing material of the fork assembly can be saved.

Alternatively, a threaded hole may be formed on the outer peripheral surface of the second sliding portion 210, and the locking mechanism may include a screw that is threadably connected to the threaded hole, and abuts against the outer peripheral surface of the first sliding portion 110 when the locking mechanism is located at the first position; in the case where the locking mechanism is located at the second position, the screw is disconnected from the outer peripheral surface of the first sliding portion 110. The present embodiment can realize stepless adjustment of the position of the fork 200, but the contact area between the screw and the first sliding portion 110 is smaller, which can make the friction generated between the screw and the first sliding portion 110 smaller, so that the effect of the locking mechanism for limiting the fork 200 to slide is poorer.

In an alternative embodiment, the locking mechanism includes a pushing member 310 and a clamping member 320, the pushing member 310 may be connected to the fork 200, the clamping member 320 is provided with a deformation opening 321 extending along the sliding direction of the fork 200, where the deformation opening 321 may penetrate the clamping member 320 or may not penetrate the clamping member 320 along the sliding direction of the fork 200, the clamping member 320 is sleeved on the outer peripheral surface of the first sliding portion 110, the pushing member 310 may press the clamping member 320, and in the case that the locking mechanism is located in the first position, the clamping member 320 presses the outer peripheral surface of the first sliding portion 110; in the case where the locking mechanism is located at the second position, the clamping member 320 is separated from the outer circumferential surface of the first sliding portion 110. In this embodiment, the clamping member 320 is sleeved on the outer peripheral surface of the first sliding portion 110, and when the locking mechanism is located at the first position, the pushing member 310 presses the clamping member 320 to deform the deformation opening 321, and the inner peripheral surface of the clamping member 320 presses the outer peripheral surface of the first sliding portion 110, that is, the inner peripheral surface of the clamping member 320 contacts the outer peripheral surface of the first sliding portion 110, which makes the contact area between the clamping member 320 and the first sliding portion 110 larger, and the friction force generated between the clamping member 320 and the first sliding portion 110 is also larger, so that the effect of restricting the sliding of the fork 200 by the locking mechanism can be improved.

The specific operation process is as follows, when the locking mechanism is located at the first position, the pushing member 310 can press the clamping member 320, at this time, the pushing member 310 is connected with the clamping member 310, the deformation opening 321 deforms, the pushing member 310 pushes the clamping member 320 to move towards the direction close to the first sliding portion 110, so that the clamping member 320 presses and hugs the outer peripheral surface of the first sliding portion 110, at this time, the clamping member 320 is relatively fixed with the first sliding portion 110, and because the pushing member 310 is connected with the fork 200, the pushing member 310 is connected with the clamping member 310, the fork 200 is relatively fixed with the clamping member 320, and the fork 200 is relatively fixed with the first sliding portion 110; in the case that the locking mechanism is located at the second position, the pushing member 310 stops pressing the clamping member 320, the clamping member 320 releases the outer circumferential surface of the first sliding portion 110, and at this time, the clamping member 310 no longer presses the first sliding portion 110, and the fork 200 can slide along the first sliding portion 110.

Alternatively, in the above embodiment, the pushing member 310 may be a pushing bolt, a bolt hole may be provided on the second sliding portion 210, the second sliding portion 210 is in threaded connection with the bolt hole, and in the case that the locking mechanism is located at the first position, the head of the pushing bolt presses the clamping member 320, so that the deformation opening 321 is deformed, and the inner peripheral surface of the clamping member 320 presses the outer peripheral surface of the first sliding portion 110, so that the fork 200 and the first sliding portion 110 are relatively fixed.

In an alternative embodiment, the pushing member 310 is sleeved on the outer peripheral surface of the first sliding portion 110, the clamping member 320 is located between the pushing member 310 and the second sliding portion 210, the pushing member 310 can slide along the first sliding portion 110 to press the clamping member 320, the clamping member 320 has a first stress inclined surface 322 disposed towards the pushing member 310, the pushing member 310 has a first stress inclined surface 311 disposed towards the clamping member 320, and the pushing member 310 can press the clamping member 320 through the first stress inclined surface 322 and the first stress inclined surface 311 which are in contact; and/or, the clamping member 320 has a second force receiving slope 323 provided toward the second sliding portion 210, the second sliding portion 210 has a second force applying slope 211 provided toward the clamping member 320, and the second sliding portion 210 can press the clamping member 320 through the second force receiving slope 323 and the second force applying slope 211 that are in contact. The pushing member 310 of the present embodiment is slidably engaged with the first sliding portion 110, and in the process of sliding the pushing member 310 in the direction approaching the second sliding portion 210, the first force-receiving inclined surface 322 contacts the first force-applying inclined surface 311 and/or the second force-receiving inclined surface 323 contacts the second force-applying inclined surface 211, at this time, the pushing member 310 pushes the clamping member 320 to move in the direction approaching the first sliding portion 110, so that the clamping member 320 presses and holds the outer peripheral surface of the first sliding portion 110. As can be seen, the present embodiment can realize stepless adjustment of the position of the pallet fork 200 without providing the bolt hole on the second sliding portion 210, so that the strength of the second sliding portion 210 is not reduced.

The specific operation process is as follows, under the condition that the pushing member 310 slides towards the direction approaching the second sliding portion 210, the first stress inclined surface 322 will contact with the first force application inclined surface 311, and/or the second stress inclined surface 323 will contact with the second force application inclined surface 211, the first stress inclined surface 322 will form a wedge structure with the first force application inclined surface 311, and/or the second stress inclined surface 323 will form a wedge structure with the second force application inclined surface 211, under the driving of the wedge structure, the pushing member 310 pushes the clamping member 320 to move towards the direction approaching the first sliding portion 110, the deformation opening 321 deforms, so that the clamping member 320 presses and holds the outer peripheral surface of the first sliding portion 110, at this time, the clamping member 320 is relatively fixed with the first sliding portion 110, and since the pushing member 310 is connected with the fork 200, the pushing member 310 is connected with the clamping member 310, the fork 200 can be relatively fixed with the clamping member 320, and the fork 200 can be relatively fixed with the first sliding portion 110; in the case that the pushing member 310 slides in a direction away from the second sliding portion 210, the first force-receiving inclined surface 322 is gradually separated from the first force-applying inclined surface 311, and/or the second force-receiving inclined surface 323 is gradually separated from the second force-applying inclined surface 211, the pushing member 310 stops pressing the clamping member 320, the clamping member 320 releases the outer circumferential surface of the first sliding portion 110, and at this time, the fork 200 can slide along the first sliding portion 110 to achieve stepless adjustment.

In the above embodiment, the pushing member 310 can be slid in a direction approaching the second sliding portion 210 by using an external clamping tool such as a clamping pliers, which is cumbersome. In an alternative embodiment, the locking mechanism further includes a first screw thread connector 330, one end of the first screw thread connector 330 passes through the pushing member 310 and is screwed with the second sliding portion 210, and the first screw thread connector 330 may drive the pushing member 310 to slide. The first threaded connection 330 is provided in this embodiment, the pushing member 310 is connected to the second sliding portion 210 through the first threaded connection 330, and when the first threaded connection 330 is screwed in the first direction, the pushing member 310 slides in a direction approaching to the second sliding portion 210, so that the pushing member 310 can be driven to move without using an external clamping tool in this embodiment, and thus the operation is simpler.

In an alternative embodiment, the inner circumferential surface of the clamping member 320 is provided with anti-slip textures or anti-slip pads. When the clamping member 320 presses the outer circumferential surface of the first sliding portion 110, the inner circumferential surface of the clamping member 320 contacts the outer circumferential surface of the first sliding portion 110, and when the inner circumferential surface of the clamping member 320 is provided with anti-slip lines or pads, friction between the clamping member 320 and the outer circumferential surface of the first sliding portion 110 can be increased, thereby further preventing the fork 200 from sliding along the first sliding portion 110. Of course, the inner circumferential surface of the clip 320 may be a smooth surface.

In an alternative embodiment, referring to fig. 5 to 8, the fork 100 is further provided with a fixing bar 400, where the fixing bar 400 is a part of the fork 100, that is, the fork 100 includes a main body portion, the fixing bar 400 is provided on the main body portion of the fork 100, the fixing bar 400 extends along the sliding direction of the fork 200, the locking mechanism includes a fixing base 340, a locking block 350, and a second screw connection 360, the fixing base 340 is provided on the fork 200, the locking block 350 is connected to the fixing base 340 through the second screw connection 360, the fixing bar 400 is located between the locking block 350 and the fixing base 340, and the locking block 350 and the fixing base 340 jointly clamp the fixing bar 400 when the locking mechanism is located at the first position; with the locking mechanism in the second position, the locking block 350 and the fixed seat 340 release the fixed lever 400. In this embodiment, in the process of positioning the locking mechanism at the first position, the second threaded connecting member 360 can be screwed in the first direction, and under the action of the second threaded connecting member 360, the distance between the fixing base 340 and the locking block 350 is reduced, so that the fixing base 340 and the locking block 350 jointly clamp the fixing rod 400 therebetween, and the fork 200 is fixed relative to the fork frame 100; when the second screw connection member 360 is screwed in a direction opposite to the first direction, the distance between the fixing base 340 and the locking block 350 increases, and at this time, the locking mechanism is located at the second position, and the locking block 350 and the fixing base 340 release the fixing bar 400. The present embodiment additionally provides the fixing lever 400, so that the locking mechanism presses the fixing lever 400 instead of pressing the first sliding portion 110, which can reduce the risk of damaging the first sliding portion 110.

In an alternative embodiment, the anchor 340 is removably attached to the fork 200, thus facilitating replacement of the anchor 340 should the anchor 340 become damaged. Optionally, the fixing base 340 is connected to the fork 200 by a third screw connection 500.

Alternatively, the surface of the fixing base 340 facing the fixing bar 400 may be a plane, and the surface of the locking block 350 facing the fixing bar 400 may be a plane, so that the fixing bar 400 may be clamped by the two planes. The contact area between the fixing base 340 and the fixing bar 400 and the contact area between the locking block 350 and the fixing bar 400 are smaller, so that the effect of restricting the sliding of the fork 200 by the locking mechanism is reduced. In an alternative embodiment, a first groove is formed on a surface of the fixing base 340 facing the fixing rod 400, and a part of the fixing rod 400 is located in the first groove when the locking mechanism is located in the first position, and an inner circumferential surface of the first groove is attached to a part of an outer circumferential surface of the fixing rod 400; the fixing base 340 of the present embodiment is provided with a first groove, and an inner peripheral surface of the first groove is attached to a portion of an outer peripheral surface of the fixing rod 400, so that a contact area between the fixing base 340 and the fixing rod 400 can be increased, thereby improving an effect of restricting the fork 200 from sliding by the locking mechanism.

And/or, a second groove is formed on a surface of the locking block 350 facing the fixing bar 400, and a part of the fixing bar 400 is located in the second groove when the locking mechanism is located at the first position, and an inner circumferential surface of the second groove is attached to a part of an outer circumferential surface of the fixing bar 400. The locking block 350 of the embodiment is provided with a second groove, and the inner peripheral surface of the second groove is attached to a part of the outer peripheral surface of the fixing rod 400, so that the contact area between the locking block 350 and the fixing rod 400 can be increased, and the effect of limiting the sliding of the fork 200 by the locking mechanism is improved.

Alternatively, the first groove and the second groove may be rectangular grooves, the fixing rod 400 is a square rod, and the groove widths of the rectangular grooves are equal in a direction extending from the notch of the rectangular groove to the groove bottom of the rectangular groove, so that the fixing rod 400 is not easy to enter the rectangular groove. In an alternative embodiment, the first recess is an arcuate recess; in this embodiment, the first groove is an arc groove, and the groove width of the first groove gradually decreases in the direction extending from the notch of the first groove to the groove bottom of the first groove, that is, the groove width at the notch of the first groove is greater than the groove width at the groove bottom of the first groove, so that the fixing rod 400 is easy to enter the first groove. And/or the second groove is an arc groove; in this embodiment, the second groove is an arc groove, and the groove width of the second groove gradually decreases from the notch of the second groove to the groove bottom of the second groove, that is, the groove width at the notch of the second groove is larger than the groove width at the groove bottom of the second groove, so that the fixing rod 400 is easy to enter the second groove.

The embodiment of the application also discloses a forklift, which comprises the fork assembly of any embodiment. In this embodiment, the fork assembly includes a fork frame 100, a fork 200 and a locking mechanism, when the position of the fork 200 is adjusted, the locking mechanism is controlled to be located at the second position, and then the fork 200 can be shifted, so that the fork 200 slides along the first sliding portion 110; when the fork 200 is slid to the target position, the locking mechanism is controlled to be in the first position, and the locking mechanism presses the fork carriage 100, so that the fork 200 and the fork carriage 100 are kept relatively stationary, and the position between the fork 200 and the fork carriage 100 is fixed. Therefore, the locking mechanism of the embodiment of the present application can press the fork frame 100, that is, the locking mechanism can apply a force to the fork 200 in a direction perpendicular to the sliding direction of the fork 200, and the fork frame 100 and the fork 200 can be locked by the force, so that the fork frame 100 does not need to be provided with a groove in the related art, and further the problems that the related art cannot perform stepless adjustment on the position of the fork 200 and the position of the fixed fork 200 is troublesome can be solved.

In the embodiments described above, the differences between the embodiments are mainly described, and as long as there is no contradiction between the different optimization features between the embodiments, the different optimization features may be combined to form a better embodiment, and in consideration of brevity of line text, the description is omitted here. The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The fork assembly is characterized by comprising a fork frame (100), a fork (200) and a locking mechanism, wherein a first sliding part (110) is arranged on the fork frame (100), a second sliding part (210) is arranged on the fork (200), the first sliding part (110) is in sliding fit with the second sliding part (210),

the locking mechanism has a first position and a second position, and presses the fork (100) to lock the fork (100) and the fork (200) so that the first sliding portion (110) and the second sliding portion (210) are relatively fixed with the locking mechanism in the first position; with the locking mechanism in the second position, the locking mechanism releases the fork carriage (100) to slide the fork (200) along the first slide (110).

2. The fork assembly according to claim 1, wherein the first sliding portion (110) is a sliding shaft, the locking mechanism is connected to the fork (200), and the locking mechanism presses the outer circumferential surface of the first sliding portion (110) in the case that the locking mechanism is located at the first position; the locking mechanism releases the outer peripheral surface of the first sliding portion (110) with the locking mechanism in the second position.

3. The fork assembly according to claim 2, wherein the locking mechanism comprises a pushing member (310) and a clamping member (320), the pushing member (310) is connected with the fork (200), the clamping member (320) is provided with a deformation opening (321) extending along the sliding direction of the fork (200), the clamping member (320) is sleeved on the peripheral surface of the first sliding portion (110), the pushing member (310) can press the clamping member (320),

the clamping member (320) presses the outer peripheral surface of the first sliding portion (110) with the locking mechanism in the first position; the clamp member (320) is separated from the outer peripheral surface of the first sliding portion (110) with the locking mechanism in the second position.

4. The fork assembly according to claim 3, wherein the pushing member (310) is sleeved on the outer peripheral surface of the first sliding portion (110), the clamping member (320) is located between the pushing member (310) and the second sliding portion (210), the pushing member (310) can slide along the first sliding portion (110) to press the clamping member (320),

the clamping piece (320) is provided with a first stress inclined surface (322) which is arranged towards the pushing piece (310), the pushing piece (310) is provided with a first force application inclined surface (311) which is arranged towards the clamping piece (320), and the pushing piece (310) can press the clamping piece (320) through the first stress inclined surface (322) and the first force application inclined surface (311) which are contacted; and/or the clamping piece (320) has a second stress inclined surface (323) arranged towards the second sliding part (210), the second sliding part (210) has a second force application inclined surface (211) arranged towards the clamping piece (320), and the second sliding part (210) can press the clamping piece (320) through the contacted second stress inclined surface (323) and the second force application inclined surface (211).

5. The fork assembly of claim 4, wherein the locking mechanism further comprises a first threaded connector (330), one end of the first threaded connector (330) passing through the pusher (310) and being threadably coupled to the second slider (210), the first threaded connector (330) being configured to drive the pusher (310) to slide.

6. A fork assembly according to claim 3, wherein the inner peripheral surface of the clamping member (320) is provided with anti-slip lines or pads.

7. The fork assembly according to claim 1, wherein the fork frame (100) is further provided with a fixing rod (400), the fixing rod (400) extends along the sliding direction of the fork (200), the locking mechanism comprises a fixing seat (340), a locking block (350) and a second threaded connecting piece (360),

the fixed seat (340) is arranged on the fork (200), the locking block (350) is connected with the fixed seat (340) through the second threaded connecting piece (360), the fixed rod piece (400) is positioned between the locking block (350) and the fixed seat (340),

the locking block (350) and the fixed seat (340) jointly clamp the fixed rod (400) when the locking mechanism is located at the first position; the locking block (350) and the fixing seat (340) release the fixing bar (400) with the locking mechanism in the second position.

8. The fork assembly according to claim 7, wherein a first recess is provided on a surface of the fixing base (340) facing the fixing bar (400), and a portion of the fixing bar (400) is located in the first recess when the locking mechanism is located at the first position, and an inner circumferential surface of the first recess is fitted to a portion of an outer circumferential surface of the fixing bar (400); and/or the number of the groups of groups,

one surface of the locking block (350) facing the fixed rod piece (400) is provided with a second groove, and when the locking mechanism is located at the first position, a part of the fixed rod piece (400) is located in the second groove, and the inner peripheral surface of the second groove is attached to a part of the outer peripheral surface of the fixed rod piece (400).

9. The fork assembly of claim 8, wherein the first recess is an arcuate recess; and/or, the second groove is an arc groove.

10. A forklift truck comprising a fork assembly as claimed in any one of claims 1 to 9.