Pallet fork jacking mechanism and forklift

Abstract

The utility model relates to the technical field of forklifts, and particularly discloses a pallet fork jacking mechanism and a forklift, comprising a pallet fork, the pallet fork comprises two fork legs which are arranged side by side left and right, the bottom of each fork leg is provided with an oil cylinder and a wheel carrier, the wheel carrier is hinged to the fork leg, the front end of the wheel carrier is provided with a support wheel used for supporting and matching with the ground, and the support wheel is provided with a hydraulic cylinder. The rear end of the wheel carrier is in driving connection with the oil cylinder, and the oil cylinder extends forwards to drive the rear end of the wheel carrier to rotate upwards so as to drive the fork leg to be jacked and lifted. The pallet fork jacking mechanism is long in service life, does not need to be provided with more hinge points and shaft sleeves, is simple and convenient to assemble, enables the distance between the pallet fork and the ground to be larger, is higher in barricade passing rate, and can easily pass through even if encountering an uneven road surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forklift technical field, concretely relates to a cargo fork jacking mechanism and forklift. BACKGROUND

[0002] The long cargo fork of the forklift is driven to jacking through the cargo fork jacking mechanism installed at the bottom of the long cargo fork, the traditional cargo fork jacking mechanism includes the cargo fork, the oil cylinder installed at the bottom of the cargo fork and sequentially transmission connection, the jacking connecting rod, the push rod and the wheel frame, the front end of the wheel frame is installed with the support wheel, the oil cylinder drives the jacking connecting rod to act and further drives the push rod to move forward, and further drives the rear end of the wheel frame to swing upward, so as to drive the long cargo fork to jacking and lift, but because the length-width ratio of the push rod of the long cargo fork is very big, therefore, it is easy to produce buckling, and the service life is affected, and the scheme needs to set more hinged points and shaft sleeves, and the assembly is complex, and the long cargo fork ground clearance is small, when the road surface is not flat, the roadblock passing rate is low. SUMMARY

[0003] The utility model aims at providing a cargo fork jacking mechanism to solve the above-mentioned technical problem.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a cargo fork jacking mechanism, including cargo fork, the cargo fork includes two fork legs arranged side by side, the bottom of the fork leg is installed with the oil cylinder and the wheel frame, the wheel frame is hinged at the fork leg, the front end of the wheel frame is installed with the support wheel for supporting cooperation with the ground, the rear end of the wheel frame is driven to connect with the oil cylinder, the oil cylinder stretches forward to drive the rear end of the wheel frame to rotate upward, and further drives the fork leg to jacking and lift.

[0005] Preferably, it further includes a transmission part, the oil cylinder is provided with a piston rod that can stretch forward and backward, the front end of the piston rod is fixedly connected with the rear end of the transmission part, and the front end of the transmission part is hinged at the rear end of the wheel frame.

[0006] Preferably, the wheel frame is installed at the front end of the bottom of the fork leg.

[0007] Preferably, it further includes a connecting piece, the support wheel is two and arranged side by side in front of the connecting piece, and the support wheel is installed at the front end of the wheel frame through the connecting piece.

[0008] Preferably, the front end of the wheel frame forms a U-shaped frame body, and the left and right sides of the connecting piece are hinged at the left and right sides of the U-shaped frame body respectively.

[0009] Preferably, the bottom of the cargo fork is further provided with an oil pipe connected with the oil cylinder.

[0010] Preferably, the top surface of the fork leg is provided with a gap hole corresponding to the upper part of the support wheel and the wheel frame.

[0011] The utility model further provides a forklift, including any one of the above-mentioned cargo fork jacking mechanism.

[0012] Preferably, a vehicle body frame is further included, and the fork lifting mechanism is installed below the front side of the vehicle body frame.

[0013] Preferably, main wheels are installed at the bottom of the vehicle body frame.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a fork lifting mechanism, which comprises a fork leg, an oil cylinder, a piston rod, a wheel frame, a supporting wheel, a transmission part and a connecting part, wherein the fork leg is arranged on the wheel frame, the oil cylinder is arranged on the rear end of the wheel frame, the piston rod is arranged on the oil cylinder, the transmission part is arranged on the piston rod, and the connecting part is arranged on the transmission part. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Is the top view of the forklift of the embodiment of the utility model.

[0017] Figure 2 Is the left view of the forklift of the embodiment of the utility model.

[0018] Figure 3 Is the bottom view of the forklift of the embodiment of the utility model.

[0019] Figure 4 Is the perspective view of the fork lifting mechanism of the embodiment of the utility model hiding the fork.

[0020] Figure 5 Is the top view of the fork lifting mechanism of the embodiment of the utility model hiding the fork.

[0021] Figure 6 Is the left view of the fork lifting mechanism of the embodiment of the utility model hiding the fork.

[0022] FIG. 1 is a fork leg, FIG. 2 is an oil cylinder, FIG. 3 is a piston rod, FIG. 4 is a wheel frame, FIG. 5 is a supporting wheel, FIG. 6 is a transmission part, FIG. 7 is a connecting part, FIG. 8 is an oil pipe, FIG. 9 is a clearance hole, FIG. 10 is a vehicle body frame, and FIG. 11 is a main wheel. DETAILED DESCRIPTION

[0023] To further illustrate the embodiments, the utility model provides has the drawing. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Referring to Figures 1-6 As shown in the utility model, as an embodiment of the utility model, a fork jacking mechanism is provided, which comprises a fork, the fork comprises two fork legs 1 arranged side by side, the bottom of the fork leg 1 is provided with an oil cylinder 2 and a wheel frame 4, the wheel frame 4 is hinged at the fork leg 1, the front end of the wheel frame 4 is provided with a supporting wheel 5 for supporting the ground, the rear end of the wheel frame 4 is drivingly connected with the oil cylinder 2, the oil cylinder 2 extends forward to drive the rear end of the wheel frame 4 to rotate upward, thereby driving the fork leg 1 to jacking lift, the technical scheme is that the rear end of the wheel frame 4 is directly driven by the oil cylinder 2 to rotate upward, thereby driving the fork leg 1 to jacking lift, so as to realize the jacking lift process of the fork, compared with the traditional jacking mechanism adopting the push rod structure, the jacking connecting rod and the push rod structure are cancelled, thereby avoiding the problem that the push rod structure is prone to buckling, prolonging the service life of the fork jacking mechanism, and the scheme does not need to set more hinge points and shaft sleeves, is easy to assemble, and makes the fork have a larger ground clearance and a higher roadblock passing rate, so that it can easily pass through even on uneven road surface.

[0027] The fork lifting mechanism of the utility model is especially suitable for the fork truck with long forks whose length is not less than 2 meters. Of course, the fork truck with short forks whose length is less than 2 meters can also be applied, and no limitation is made herein.

[0028] In the embodiment, the transmission member 6 is further included, the oil cylinder 2 is provided with the front and rear telescopic piston rod 3, the front end of the piston rod 3 is fixedly connected with the rear end of the transmission member 6, and the front end of the transmission member 6 is hingedly connected with the rear end of the wheel frame 4, so that the transmission stability between the oil cylinder 2 and the wheel frame 4 is ensured.

[0029] In the embodiment, the wheel frame 4 is installed at the front end of the bottom of the fork leg 1, further includes the connecting member 7, the support wheels 5 are arranged in two at the connecting member 7 in front and rear parallel mode, and the support wheels 5 are installed at the front end of the wheel frame 4 through the connecting member 7, so that the stability of the support and lifting of the fork is ensured, and the wheel load of the two support wheels 5 can be self-adaptively balanced through the communicated system pressure.

[0030] In the embodiment, the front end of the wheel frame 4 is formed with a U-shaped frame body, and the left and right sides of the connecting member 7 are hingedly connected with the left and right sides of the U-shaped frame body, so that the installation stability of the support wheels 5 on the wheel frame 4 is ensured.

[0031] In the embodiment, the bottom of the fork is further provided with the oil pipe 8 connected with the oil cylinder 2, which is used for delivering oil to the oil cylinder 2.

[0032] In the embodiment, the top surface of the fork leg 1 is provided with the accommodation hole 9 corresponding to the upper part of the support wheels 5 and the wheel frame 4, so that the support wheels 5 and the wheel frame 4 have greater activity space in the upper direction.

[0033] The utility model also provides a kind of fork truck, including the fork lifting mechanism described in above embodiment and vehicle body frame 10, and the fork lifting mechanism is installed in the front lower side of vehicle body frame 10, and the bottom of vehicle body frame 10 is provided with main wheel 11, and the technical scheme is that the rear end of wheel frame 4 is directly driven to rotate upwards by oil cylinder 2, and then fork leg 1 is lifted, so that the lifting process of fork is realized, compared with the lifting mechanism of traditional push rod structure, the structure of lifting connecting rod and push rod is cancelled, so that the problem that push rod structure is prone to flexure is avoided, and the scheme does not need to set more hinged points and shaft sleeves, and it is simple to assemble, and the fork has larger ground clearance, and the barrier passing rate is higher, even if encountering uneven road, it can also pass easily.

[0034] Although the utility model is specifically shown and introduced in combination with preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all fall within the protection scope of the utility model.

Claims

1. A fork lift mechanism, characterized by: The forklift comprises a forklift, a hydraulic cylinder and a wheel frame, wherein the forklift comprises two fork legs arranged side by side, the bottom of the fork legs is provided with the hydraulic cylinder and the wheel frame, the wheel frame is hinged to the fork legs, the front end of the wheel frame is provided with a supporting wheel for supporting the ground, the rear end of the wheel frame is drivingly connected to the hydraulic cylinder, the hydraulic cylinder extends forward to drive the rear end of the wheel frame to rotate upward, thereby driving the fork legs to lift up.

2. A fork lift mechanism according to claim 1, characterised in that: The forklift further comprises a transmission member, the hydraulic cylinder is provided with a piston rod which can extend forward and backward, the front end of the piston rod is fixedly connected to the rear end of the transmission member, and the front end of the transmission member is hinged to the rear end of the wheel frame.

3. The fork lift mechanism of claim 1, wherein: The wheel frame is installed at the front end of the bottom of the fork legs.

4. The fork lift mechanism of claim 1, wherein: The forklift further comprises a connecting member, the supporting wheel is provided with two supporting wheels arranged side by side in front of and behind the connecting member, and the supporting wheels are installed at the front end of the wheel frame through the connecting member.

5. A fork lift mechanism according to claim 4, wherein: The front end of the wheel frame is formed with a U-shaped frame body, and the left and right sides of the connecting member are hinged to the left and right sides of the U-shaped frame body, respectively.

6. The fork lift mechanism of claim 1, wherein: The bottom of the forklift is further provided with an oil pipe connected to the hydraulic cylinder.

7. The fork lift mechanism of claim 1, wherein: The top surface of the fork legs is provided with a clearance hole corresponding to the upper part of the supporting wheel and the wheel frame.

8. A fork lift truck characterised by: The forklift further comprises the forklift lifting mechanism as claimed in any one of claims 1-7.

9. The fork truck of claim 8 wherein: The forklift further comprises a vehicle frame, and the forklift lifting mechanism is installed below the front side of the vehicle frame.

10. The fork truck of claim 9 wherein: The bottom of the vehicle frame is provided with a main wheel.

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