CN216946055U - Lifting mechanism and industrial carrier - Google Patents

Abstract

The utility model provides a lifting mechanism and an industrial truck, and relates to the technical field of industrial trucks. The utility model provides an elevating system for the lift of industry carrier fork, includes back frame, first hydro-cylinder, preceding frame and fork, and first hydro-cylinder setting just offsets with preceding frame on the frame of back, fork and preceding frame fixed connection still include: the second oil cylinder is arranged on the rear frame; the rocker arm is abutted against the second oil cylinder and is hinged with the front frame; the wheel carrier is hinged with the fork; one end of the connecting rod is hinged with the rocker arm, and the other end of the connecting rod is hinged with the wheel carrier. The lifting mechanism is provided with the second oil cylinder, the rocker arm, the wheel carrier and the connecting rod, so that the lifting mechanism has two lifting states to correspond to daily working conditions and special working conditions.

Description

Lifting mechanism and industrial carrier

Technical Field

The utility model belongs to the technical field of industrial carriers, and particularly relates to a lifting mechanism and an industrial carrier.

Background

Since the eighties of the twentieth century, logistics has become one of the underpinning industries of national economy and one of the key development industries of service industry in China through more than thirty years of development.

An industrial truck refers to a logistics handling apparatus that functions to carry goods. The common loading and unloading and carrying tool in factories and logistics stations is a forklift, the loading and unloading, stacking and short-distance transportation operation are carried out on finished pallet goods, during use, the forks carried by the forklift are inserted into the pallet holes, and the pallet goods are lifted and lowered by a hydraulic system.

As shown in fig. 1, in the prior art, the forks of the forklift can only ascend or descend integrally, so that the forklift is used under special working conditions, for example, when the forklift is on a slope and the pallet is on a flat ground, the forks cannot extend into the lower part of the pallet.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a lifting mechanism with a fork lifting back end and a fork non-lifting front end under special working conditions and an industrial truck applying the lifting mechanism.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a lifting mechanism for the lift of industry carrier fork, includes back frame, first hydro-cylinder, preceding frame and fork, first hydro-cylinder sets up on the back frame and with preceding frame offsets, the fork with preceding frame fixed connection, its characterized in that still includes:

the second oil cylinder is arranged on the rear frame;

the rocker arm is abutted against the second oil cylinder and is hinged with the front frame;

the wheel frame is hinged with the fork;

one end of the connecting rod is hinged with the rocker arm, and the other end of the connecting rod is hinged with the wheel carrier

As a further improvement of the utility model, the second oil cylinder comprises a second cylinder body and a second piston rod inserted in the second cylinder body, the second piston rod extends out, and the lifting heights of the front end and the rear end of the fork are the same or similar.

As a further improvement of the present invention, the second cylinder includes a second cylinder body and a second piston rod inserted into the second cylinder body, the second piston rod is retracted, and a rising height of the front end of the fork is smaller than a rising height of the rear end of the fork.

As a further improvement of the utility model, the first oil cylinder and the second oil cylinder have opposite movement directions.

As a further improvement of the present invention, the first oil cylinder includes a first cylinder body and a first piston rod inserted into the first cylinder body, a projection is disposed on the front frame, the first cylinder body is disposed on the rear frame, and an end of the first piston rod abuts against the projection.

As a further improvement of the present invention, a first roller is disposed on the rocker arm, and when the second piston rod is in an extended state, the end of the second piston rod abuts against the first roller.

As a further improvement of the utility model, the vehicle body support further comprises a guide rail and a second roller, wherein the guide rail is fixedly connected with the rear frame, the second roller is hinged with the front frame, and the second roller can roll on the guide rail.

The utility model also provides an industrial truck comprising the lifting mechanism.

Based on the technical scheme, the utility model at least has the following technical effects:

1. the lifting mechanism is provided with the second oil cylinder, the rocker arm, the wheel carrier and the connecting rod, so that the lifting mechanism has two lifting states to correspond to daily working conditions and special working conditions;

2. the front frame is provided with the lug, and the end part of the first piston rod is abutted against the lug, so that the first oil cylinder can control the front frame to rise and fall;

3. the rocker arm is provided with the roller, so that the rocker arm can roll on the rear frame in the ascending process, and the motion resistance is reduced;

4. the first oil cylinder and the second oil cylinder are arranged on the same straight line, so that the arrangement of the oil cylinders is compact, and the space is saved;

5. the guide rail is arranged on the rear frame, and the second idler wheel is arranged on the front frame, so that the resistance is smaller when the front vehicle type slides relative to the rear frame.

Drawings

FIG. 1 is a schematic diagram of a conventional industrial truck fork not being able to extend into a pallet under special operating conditions.

FIG. 2 is a schematic view of the pallet of the industrial truck of the present invention being extendable into a special operating condition.

Fig. 3 is a schematic view of the non-raised state of the lifting mechanism of the present invention.

Fig. 4 is a schematic diagram of a typical operating condition lift state of the lift mechanism of the present invention.

Fig. 5 is a schematic diagram of a special operating condition lift state of the lift mechanism of the present invention.

Fig. 6 is a sectional view of the elevating mechanism of the present invention.

In the figure, 100, the rear frame; 110. a first cylinder; 111. a first cylinder; 112. a first piston rod; 120. a second cylinder; 121. a second cylinder; 122. a second piston rod; 130. a guide rail; 200. a front frame; 210. a bump; 220. a second roller; 300. a pallet fork; 400. a rocker arm; 410. a first roller; 500. a wheel carrier; 510. a wheel; 600. a connecting rod.

Detailed Description

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The following is a specific embodiment of the present invention, and the technical solution of the present invention is further described with reference to fig. 2 to 6, but the present invention is not limited to the following embodiment.

A lifting mechanism is used for lifting a fork 300 of an industrial truck and comprises a rear frame 100, a first oil cylinder 110, a front frame 200 and the fork 300, wherein the first oil cylinder 110 is arranged on the rear frame 100 and is abutted against the front frame 200, and the fork 300 is fixedly connected with the front frame 200; the forklift truck further comprises a second oil cylinder 120, a rocker arm 400, a wheel carrier 500 and a connecting rod 600, wherein the second oil cylinder 120 is arranged on the rear frame 100, the rocker arm 400 abuts against the second oil cylinder 120, the rocker arm 400 is hinged with the front frame 200, the wheel carrier 500 is hinged with the fork 300, one end of the connecting rod 600 is hinged with the rocker arm 400, and the other end of the connecting rod 600 is hinged with the wheel carrier 500; wherein the lift mechanism has a first raised state and a second raised state. The second oil cylinder 120, the rocker arm 400, the wheel carrier 500 and the connecting rod 600 are arranged in the lifting mechanism, so that the lifting mechanism has two lifting states to correspond to daily working conditions and special working conditions.

The first cylinder 110 includes a first cylinder 111 and a first piston rod 112 inserted into the first cylinder 111, a protrusion 210 is disposed on the front frame 200, the first cylinder 111 is disposed on the rear frame 100, and an end of the first piston rod 112 abuts against the protrusion 210. By providing the protrusion 210 on the front frame 200 and abutting the end of the first piston rod 112 against the protrusion 210, the raising and lowering of the front frame 200 can be controlled by the first cylinder 110.

The second cylinder 120 includes a second cylinder 121 and a second piston rod 122 inserted into the second cylinder 121, the rocker arm 400 is provided with a first roller 410, the second piston rod 122 has two states of extending and retracting, and when the second piston rod 122 is in the extending state, the end of the second piston rod 122 abuts against the first roller 410. By providing the rocker arm 400 with a roller, the rocker arm 400 can roll on the rear frame 100 during the ascent, reducing the motion resistance.

Preferably, the first cylinder 110 and the second cylinder 120 move in opposite directions. In the present embodiment, the first cylinder 110 and the second cylinder 120 are disposed on a straight line, and in other embodiments, the first cylinder 110 and the second cylinder 120 may not be disposed on a straight line. By arranging the first oil cylinder 110 and the second oil cylinder 120 on a straight line, the arrangement of the oil cylinders is compact, and the space is saved.

Preferably, the lifting mechanism further comprises a guide rail 130 and a second roller 220, wherein the guide rail 130 is fixedly connected with the rear frame 100, the second roller 220 is hinged with the front frame 200, and the second roller 220 can roll on the guide rail 130. By providing the guide rail 130 on the rear frame 100 and the second roller 220 on the front frame 200, resistance is made smaller when the front vehicle type slides with respect to the rear frame 100.

Preferably, the bottom of the front end of the fork 300 is provided with a wheel 510, so that the front end of the fork 300 is in contact with the ground through the wheel 510, and friction is reduced.

The utility model further provides an industrial truck comprising the lifting mechanism.

The utility model has two lifting states which are used for different working conditions of the industrial truck, when the industrial truck is transported on a flat ground, the first lifting state is used, at the moment, the second piston rod 122 extends out in the process that the front frame 200 is lifted, the first roller 410 is in rolling contact with the end surface of the second piston rod 122 and is pressed downwards, the rocker arm 400 rotates anticlockwise around a hinge point, the connecting rod 600 is pulled in the rotating process of the rocker arm 400, the connecting rod 600 pulls the wheel frame 500 to rotate clockwise around the hinge point, and therefore the front end of the fork 300 also slowly lifts under the support of the wheels 510. In this operating state, the front ends of the forks 300 and the rear ends of the forks 300 are raised to the same or approximately the same height, which means that the raised heights of the front ends of the forks 300 and the rear ends of the forks 300 may be slightly different due to a certain processing error in processing each part, and the deviation is generally less than 5% of the raised height.

When the industrial truck is carrying goods on level ground on a ramp, the second piston rod 122 is in a retracted state using the second raised state. The first piston rod 112 extends out, the front frame 200 slowly rises, and in the process of rising the front frame 200, a self-moving space exists between the first roller 410 and the end surface of the second piston rod 122, so that the roller is not stressed, the rocker arm 400 does not rotate, and meanwhile, the rear frame 100 rotates towards the front frame 200, so that the head of the fork 300 does not rise together with the front frame 200, and the rising height of the front end of the fork 300 is smaller than that of the rear end of the fork 300.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims (8)

1. The utility model provides an elevating system for the lift of industry carrier fork, includes back frame, first hydro-cylinder, preceding frame and fork, first hydro-cylinder sets up on the back frame and with preceding frame offsets, the fork with preceding frame fixed connection, its characterized in that still includes:

the second oil cylinder is arranged on the rear frame;

the rocker arm is abutted against the second oil cylinder and is hinged with the front frame;

the wheel frame is hinged with the fork;

one end of the connecting rod is hinged to the rocker arm, and the other end of the connecting rod is hinged to the wheel carrier.

2. The lifting mechanism as claimed in claim 1, wherein the second cylinder comprises a second cylinder body and a second piston rod inserted into the second cylinder body, the second piston rod extends out, and the lifting height of the front end and the rear end of the fork is the same as or similar to each other.

3. The lift mechanism of claim 1, wherein the second cylinder comprises a second cylinder body and a second piston rod inserted into the second cylinder body, wherein the second piston rod is retracted and the lift height of the front end of the fork is less than the lift height of the rear end of the fork.

4. The lift mechanism of claim 1, wherein the first cylinder and the second cylinder move in opposite directions.

5. The lifting mechanism according to claim 1, wherein the first cylinder comprises a first cylinder body and a first piston rod inserted into the first cylinder body, a protrusion is disposed on the front frame, the first cylinder body is disposed on the rear frame, and an end of the first piston rod abuts against the protrusion.

6. A lifting mechanism as claimed in claim 2, wherein the rocker arm is provided with a first roller, and the end of the second piston rod abuts the first roller when the second piston rod is in the extended position.

7. The lifting mechanism as claimed in claim 1, further comprising a guide rail fixedly connected to the rear frame and a second roller hinged to the front frame, the second roller being rollable on the guide rail.

8. An industrial truck, characterized by comprising the lifting mechanism according to any one of claims 1 to 7.

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