CN105923581A - Forked frame structure for forklift - Google Patents

Abstract

The invention provides a fork frame structure of a forklift, belonging to the technical field of forklifts. It solves the problems that the existing forklifts are easy to cause goods to slip and have poor safety. The fork frame structure of the forklift includes a hanger connected with the car body and two fork arms. Also includes a limit plate, one end of the limit plate is hinged on the horizontal end of the yoke, and a push rod is slidably connected to the yoke. The limit plate swings upwards and the fork arm is provided with a power member capable of pushing the push rod to move back and forth. The fork frame structure of the forklift can prevent the goods from falling when the forklift goes downhill, and the safety is higher.

Description

A fork frame structure of a forklift

technical field

The invention belongs to the technical field of forklifts and relates to a fork frame structure of a forklift.

Background technique

Forklifts are industrial transport vehicles, which refer to various wheeled transport vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. They are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, distribution centers and Distribution centers, etc., carry out pallet cargo loading, unloading and handling operations in cabins, carriages and containers. It is an indispensable equipment in pallet transportation and container transportation. Forklifts play a very important role in the logistics system of enterprises. The workhorse of your device. A forklift is mainly composed of a car body and a fork frame that can be lifted. At present, the fork frame is two horizontally protruding fork arms. Difference.

Contents of the invention

The object of the present invention is to solve the above-mentioned problems in the prior art, and propose a fork frame structure of a forklift. The fork frame structure of the forklift can prevent the goods from falling when the forklift goes downhill, and has higher safety.

The purpose of the present invention can be achieved through the following technical solutions: a fork frame structure of a forklift, comprising a hanger connected to the vehicle body and two fork arms, the fork arms are L-shaped, and one end of the fork arms is vertically fixed Connected to the hanger, the other end is horizontal, characterized in that the fork frame structure also includes a strip-shaped limiting plate, one end of the limiting plate is hinged on the horizontal end of the yoke, and the yoke There is also a push rod slidably connected to it along the length direction, and a transmission member that can make the limit plate swing upward when the push rod moves forward is provided between the push rod and the limit plate. The power part for the reciprocating movement of the push rod.

In the natural state, the limit plate is horizontally located at the front end of the fork arm. At this time, the upper side of the limit plate is flush with the upper side of the fork arm. When going downhill, the front end of the yoke is in a tilted state. At this time, the power part drives the push rod to move forward. The push rod moves and the free end of the limit plate swings upward through the transmission part, so that the free end of the limit plate On the upper side of the yoke, when the cargo pallet moves forward relative to the yoke, it can abut against the side of the limit plate, that is, the limit plate limits the position of the cargo pallet to prevent the cargo from falling, and the safety is higher.

In the above-mentioned fork frame structure of the forklift, both sides of the horizontal end of the yoke have connecting notches, and the edge of the limiting plate has two connecting parts, and the two connecting parts are respectively hinged by pins. In the two connecting notches, the width of the limiting plate is the same as that of the fork arm. The limiting plate is connected in the connecting notch through the connecting part, so that the structure is more stable and compact.

In the above-mentioned fork frame structure of the forklift, the transmission member includes two transmission gears and two transmission racks, the two transmission gears are fixedly connected on the pin shaft, and the two transmission gears are respectively located in the two connection notches, and the push rod It is U-shaped, and the two ends of the push rod are respectively located below the two transmission gears, and the two transmission racks are fixedly connected to the upper sides of the two ends of the push rod respectively, and the two transmission racks are respectively engaged with the two transmission gears for transmission. When the push rod moves forward, it drives the transmission rack to move forward. The transmission rack is located below the transmission gear and meshes with the transmission gear, so it can drive the transmission gear to rotate and make the free end of the limit plate swing upward. , The transmission rack has a positioning effect on the transmission gear.

In the above-mentioned fork frame structure of the forklift, the lower side of the fork arm has a concave cavity, the opposite inner walls of the concave cavity are provided with slide grooves along the length direction, and the side edges at both ends of the push rod are There are several sliders, the sliders are slidably connected in the chute, two through holes are respectively opened on the front end surface of the cavity, and the two through holes communicate with the two connecting notches respectively, and the two through holes of the push rod Ends protrude from two through holes respectively. The push rod is connected in the concave cavity through the sliding block and the sliding groove, and the structure is stable and compact.

In the fork frame structure of the above-mentioned forklift, the power part includes a power cylinder fixedly connected in the cavity, the piston rod of the power cylinder is arranged horizontally forward along the length direction of the cavity, and the piston rod of the power cylinder The end is fixedly connected with the middle part of the push rod. The push rod is pushed by the power cylinder, and the structure is simple.

In the above-mentioned fork frame structure of the forklift, the edge of the limiting plate also has a plate-shaped limiting portion, which is parallel to the limiting plate. When the limiting plate is horizontal, the upper side of the limiting portion is in contact with the fork arm. the lower side against. The limiting part abuts against the lower side of the yoke to limit the limiting plate, so that the limiting plate remains horizontal.

In the above-mentioned fork frame structure of the forklift, a buffer block is fixedly connected to the upper side of the limiting plate, and the buffer block is made of polyurethane material. The limit block is embedded in the limit plate, and plays a buffering role when abutting against the cargo pallet.

Compared with the prior art, the fork frame structure of the forklift has the following advantages:

1. Since the push rod is driven forward by the power part, the push rod moves and the free end of the limit plate swings upward through the transmission part, so that the free end of the limit plate is higher than the upper side of the fork arm. When the cargo pallet is facing When the yoke moves forward, it can abut against the side of the limiting plate, that is, the limiting plate limits the position of the cargo pallet to prevent the cargo from falling, and the safety is higher.

2. Since the upper side of the limiting plate is also fixedly connected with a buffer block, the limiting block is embedded in the limiting plate and plays a buffering role when it abuts against the cargo pallet.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the fork frame structure of the forklift.

Fig. 2 is a partial structural sectional view of the fork frame structure of the forklift.

Fig. 3 is an enlarged view of the structure at A in Fig. 1 .

In the figure, 1. hanger; 2. yoke; 21. connecting notch; 22. concave cavity; 23. chute; 3. limiting plate; 31. transmission gear; 32. limiting part; 33. buffer block ; 4, push rod; 41, transmission rack; 42, slider; 5, power cylinder.

detailed description

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 1 and Figure 2, a fork frame structure of a forklift includes a hanger 1 connected to the vehicle body and two fork arms 2, the fork arms 2 are L-shaped, and one end of the fork arms 2 is vertically fixed On the hanger 1, the other end is horizontal, and the fork frame structure also includes a strip-shaped limiting plate 3, one end of the limiting plate 3 is hinged on the horizontal end of the yoke 2, and the yoke 2 also slides along the length direction A push rod 4 is connected, and a transmission member that can make the limit plate 3 swing upward when the push rod 4 moves forward is provided between the push rod 4 and the limit plate 3, and the fork arm 2 is provided with a drive that can push the push rod 4 to reciprocate. Moving power parts.

In the natural state, the limit plate 3 is horizontally located at the front end of the yoke 2. At this time, the upper side of the limit plate 3 is flush with the upper side of the yoke 2, and the forklift moves so that the front end of the yoke 2 is inserted into the lower part of the cargo pallet. When the forklift needs to go downhill, the front end of the fork arm 2 is in a tilted state. At this time, the push rod 4 is driven forward by the power part, and the push rod 4 moves and the free end of the limit plate 3 swings upward through the transmission part. Therefore, the free end of the limiting plate 3 is higher than the upper side of the yoke 2, and when the cargo pallet moves forward relative to the yoke 2, it can abut against the side of the limiting plate 3, that is, the limiting plate 3 limits the cargo pallet. position, prevent the goods from falling, and have higher safety.

Specifically, as shown in FIG. 3 , there are connecting notches 21 on both sides of the horizontal end of the yoke 2 , and the edge of the limit plate 3 has two connecting parts, and the two connecting parts are respectively hinged on the two connecting parts through pin shafts. In the notch 21, the width of the limiting plate 3 is the same as that of the yoke 2, and the limiting plate 3 is connected in the notch through a connecting portion, making the structure more stable and compact. The transmission part comprises two transmission gears 31 and two transmission racks 41, and the two transmission gears 31 are fixedly connected on the bearing pin, and the two transmission gears 31 are respectively located in the two connecting notches 21, the push rod 4 is U-shaped, and the push rod The two ends of 4 are located below the two transmission gears 31 respectively, and the two transmission racks 41 are fixedly connected to the upper sides of the two ends of the push rod 4 respectively, and the two transmission racks 41 are respectively engaged with the two transmission gears 31 for transmission, and the push rod 4 Drive transmission rack 41 to move forward when moving forward, transmission rack 41 is positioned at the below of transmission gear 31 and meshes with transmission gear 31, therefore can drive transmission gear 31 to rotate, and makes the free end of limiting plate 3 swing upwards , after swinging in place, the transmission rack 41 has a positioning effect on the transmission gear 31.

Specifically, there is a concave cavity 22 on the lower side of the yoke 2, and slide grooves 23 are provided on the opposite inner walls of the concave cavity 22 along the length direction, and a plurality of sliding blocks 42 are arranged on the side edges of the two ends of the push rod 4. The block 42 is slidably connected in the chute 23, and two through holes are respectively opened on the front end surface of the cavity 22, and the two through holes communicate with the two connecting notches 21 respectively, and the two ends of the push rod 4 stretch out two through holes respectively. , The push rod 4 is connected in the concave cavity 22 through the sliding block 42 and the sliding groove 23, and the structure is stable and compact.

Specifically, the power part includes a power cylinder 5 fixedly connected in the concave cavity 22, the piston rod of the power cylinder 5 is arranged horizontally forward along the length direction of the concave cavity 22, and the end of the piston rod of the power cylinder 5 is connected with the push rod The middle part of 4 is fixedly connected, and push rod 4 is promoted by power cylinder 5, and structure is simple.

Specifically, the edge of the limiting plate 3 also has a plate-shaped limiting portion 32, which is parallel to the limiting plate 3. The lower sides abut against each other, and the limiting portion 32 abuts against the lower side of the yoke 2 to limit the limiting plate 3 so that the limiting plate 3 remains horizontal.

Specifically, the upper side of the limiting plate 3 is also fixedly connected with a buffer block 33, the buffer block 33 is made of polyurethane material, the limiting block is embedded in the limiting plate 3, and plays a buffering role when it abuts against the cargo pallet. .

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (7)

1. A fork frame structure of a forklift, comprising a hanger (1) connected to the car body and two yokes (2), the yoke (2) is L-shaped, and one end of the yoke (2) is vertical It is directly connected to the hanger (1), and the other end is horizontal. It is characterized in that the fork frame structure also includes a strip-shaped limiting plate (3), and one end of the limiting plate (3) is hinged on the fork At one end of the horizontal arm (2), the yoke (2) is also slidably connected with a push rod (4) along the length direction, and there is a fixed position between the push rod (4) and the limit plate (3). When the push rod (4) moves forward, the transmission member can make the limit plate (3) swing upwards, and the yoke (2) is provided with a power member capable of pushing the push rod (4) to move back and forth. 2. The fork frame structure of a forklift according to claim 1, characterized in that, the edges on both sides of one end of the horizontal end of the fork arm (2) have connecting notches (21), and the limiting plate (3 ) has two connecting parts, and the two connecting parts are respectively hinged in the two connecting notches (21) by pin shafts, and the width of the limiting plate (3) is the same as the width of the yoke (2). 3. The fork frame structure of a forklift according to claim 2, characterized in that, the transmission member comprises two transmission gears (31) and two transmission racks (41), and the two transmission gears (31) are all fixedly connected to the pin on the shaft, and the two transmission gears (31) are respectively located in the two connecting notches (21), the push rod (4) is U-shaped, and the two ends of the push rod (4) are respectively located at the ends of the two transmission gears (31). Below, two described transmission racks (41) are fixedly connected on the upper side of push rod (4) two ends respectively, and two transmission racks (41) are engaged with two transmission gears (31) respectively for transmission. 4. The fork frame structure of a forklift according to claim 3, characterized in that, the underside of the fork arm (2) has a cavity (22), and the opposite inner walls of the cavity (22) are A chute (23) is provided along the length direction, and a plurality of sliders (42) are provided on the side edges at both ends of the push rod (4), and the sliders (42) are slidably connected in the chute (23). Two through holes are respectively opened on the front end surface of the concave cavity (22), and the two through holes communicate with the two connecting notches (21) respectively, and the two ends of the push rod (4) protrude from the two through holes respectively. 5. The fork frame structure of a forklift according to claim 4, characterized in that, the power part comprises a power cylinder (5) fixedly connected in the concave cavity (22), and the piston rod of the power cylinder (5) It is arranged horizontally forward along the length direction of the cavity (22), and the end of the piston rod of the power cylinder (5) is fixedly connected with the middle part of the push rod (4). 6. The fork frame structure of a forklift according to claim 5, characterized in that, the edge of the limiting plate (3) also has a plate-shaped limiting portion (32), and the limiting portion (32) is in contact with the limiting portion The plates (3) are parallel, and when the limit plate (3) is horizontal, the upper side of the limiting part (32) abuts against the lower side of the yoke (2). 7. The fork frame structure of a forklift according to claim 6, characterized in that, a buffer block (33) is also fixedly connected to the upper side of the limiting plate (3), and the buffer block (33) is made of polyurethane material.