Fork truck

Abstract

The utility model provides a fork truck, which relates to the field of freight trucks, and comprises a truck chassis and a truck-mounted pallet fork arm, the pallet fork arm is connected with the truck chassis through a support column, the pallet fork arm is connected with a pallet fork arm lifting drive, the pallet fork arm is connected with an extension arm drive for driving the front end of the pallet fork arm to extend or retract, and the fork truck is characterized by further comprising a connecting seat, the fork arm is arranged at the front end of the fork arm and hinged to the fork arm; the adjusting drive is connected between the connecting seat and the pallet fork arm and used for adjusting the angle of the connecting seat relative to the pallet fork arm; the pallet fork frame is connected to the bottom of the connecting base, and the pallet fork is connected to the pallet fork frame. According to the utility model, cargo loading, transportation, loading and unloading can be completed by the same vehicle, especially for some cargoes which are not suitable for hoisting, such as flexible package cargoes packaged by cartons and the like, and cargoes which need to be stacked together, such as disaster relief sandbags, curb stones and the like, compared with other modes, the cargo lifting device has the advantages of timeliness, convenience, rapidness and safety, and is suitable for large-scale popularization and application. And the length of the transport vehicle does not need to be additionally increased.

Description

Technical Field

[0001] The utility model relates to the technical field of freight vehicles, and particularly relates to a forklift truck. Background Art

[0002] Today, with the developed logistics, motor vehicle transportation is the main way to transport goods by land. Especially for short-distance transfer within a city, it is basically inseparable from motor vehicles. Correspondingly, the loading and unloading of motor vehicle transportation is an inevitable working link.

[0003] At present, the loading and unloading of motor vehicle transportation generally relies on forklifts and cranes for assistance. However, it is not ideal in terms of timeliness and convenience. To solve this problem, some manufacturers have designed and produced motor vehicles equipped with on-vehicle lifting booms. Although the on-vehicle lifting boom solves the timeliness problem, there is still a lack of convenience. Especially for some goods that are not suitable for lifting, such as soft-packaged goods in carton packaging and goods that need to be stacked together, such as disaster relief sandbags and roadside curb stones, there are phenomena such as being unable to tie the lifting rope, the lifting rope is easy to damage the goods, and the lifted goods are easy to tilt and fall. Therefore, it cannot be applied. Therefore, in this case, the current method of using a freight vehicle and a forklift in cooperation for operation is still adopted.

[0004] Therefore, the present application aims to propose a forklift truck that can meet multiple requirements such as loading, transportation, and unloading with one vehicle, and has a simple structure without additionally increasing the vehicle length of the transport vehicle. Content of the Utility Model

[0005] The utility model provides a forklift truck for solving the above problems in the prior art. By carrying a loading and unloading forklift on the vehicle, it can stably fork and load and unload some goods that are not suitable for lifting, such as soft-packaged goods in carton packaging and goods that need to be stacked together, such as disaster relief sandbags and roadside curb stones, avoiding the additional cooperation with a forklift and ensuring the timeliness.

[0006] The technical solution for the utility model to solve the above technical problems is as follows: A forklift truck includes a vehicle chassis and a forklift arm carried on the vehicle. The forklift arm is connected to the vehicle chassis through a support column. The forklift arm is connected with a forklift arm lifting drive for adjusting its pitching angle, and the forklift arm is connected with an extension drive for driving its front end to extend or retract. It is characterized in that it further includes

[0007] A connecting seat is arranged at the front end of the forklift arm and is hinged to the forklift arm;

[0008] An adjustment drive is connected between the connecting seat and the forklift arm for adjusting the angle of the connecting seat relative to the forklift arm;

[0009] A forklift rack is connected to the bottom of the connecting seat,

[0010] A forklift is connected to the forklift rack;

[0011] and a loading platform provided on the vehicle chassis.

[0012] Furthermore, a fork receiving cavity for storing forks is provided at the rear of the forklift truck.

[0013] Furthermore, a slewing bearing I is connected between the support column and the vehicle chassis.

[0014] Even further, the fork carrier is connected to the bottom of the connecting seat through a slewing bearing II.

[0015] Furthermore, the fork carrier includes a hanging frame and a fork sliding frame. The hanging frame is connected to the bottom of the connecting seat, the forks are connected to the fork sliding frame, the fork sliding frame is connected to the hanging frame in a horizontally slidable manner, and a fork sliding drive is connected between the fork sliding frame and the hanging frame.

[0016] Alternatively, the fork carrier includes a hanging frame and a fork sliding frame. The hanging frame is connected to the bottom of the slewing bearing II in an angle-adjustable manner relative to the slewing bearing II, the forks are connected to the fork sliding frame, the fork sliding frame is connected to the hanging frame in a horizontally slidable manner, a fork sliding drive is connected between the fork sliding frame and the hanging frame, and the hanging frame is connected with a back fork drive for adjusting the angle formed by the forks and the horizontal plane.

[0017] Even further, the hanging frame is connected to the slewing bearing II through a carrier plate. The carrier plate is fixed to the slewing bearing II, and the hanging frame is hinged to the carrier plate. The hinge point of the two and the fork end are respectively located on both sides of the axis of the slewing bearing II.

[0018] Even further, the hanging frame includes an upper hanging frame and a lower hanging frame. The lower hanging frame is connected to the upper hanging frame in a vertically slidable manner, and a fixing member for fixing the two is connected between the upper hanging frame and the lower hanging frame.

[0019] Even further, the fixing member adopts a fixing pin. The upper hanging frame is provided with at least one set of pin holes corresponding to the fixing pin, and the lower hanging frame is provided with multiple sets of pin holes with different heights corresponding to the fixing pin.

[0020] Furthermore, the fork arm is of a telescopic arm structure, or / and

[0021] the fork arm is connected to the support column through a sliding sleeve. The sliding sleeve is hinged to the top of the support column. The tail end of the fork arm penetrates through the sliding sleeve and is slidably connected thereto. A fork arm sliding drive for driving the relative sliding of the two is connected between the fork arm and the sliding sleeve.

[0022] Furthermore, the support column is a liftable support column, which includes a support fixed column and a support lift column that slides up and down with the support fixed column. A support lift drive for driving the relative sliding of the two is connected between the support fixed column and the support lift column.

[0023] Furthermore, the forklift arm lifting drive, telescopic arm drive, adjustment drive, back fork drive, forklift arm sliding drive, and support lifting drive all adopt hydraulic cylinder structures.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. The present utility model creatively proposes to connect the forklift carriage carrying the forklift forks to the end of the forklift arm of the vehicle, and is equipped with an adjustment drive, rather than carrying the entire forklift on the vehicle in the prior art. This ensures the smoothness of the goods carried by the forklift while adjusting the forklift arm, enabling the same vehicle to complete loading, transportation, and unloading. Especially for some goods that are not suitable for hoisting, such as soft-packaged goods in cartons and goods that need to be stacked together like disaster relief sandbags and roadside curb stones, etc., it has the advantages of timeliness, convenience, speed, and safety compared to other methods, and there is no need to additionally increase the length of the transport vehicle.

[0026] 2. The forklift carriage of the present utility model is connected to the connecting seat through the slewing bearing II, and then the support column is connected to the vehicle chassis through the slewing bearing I, enabling the forklift forks to work in multiple directions. It can not only load goods for itself but also facilitate loading goods for other vehicles, with a wider range of applicability.

[0027] 3. Further, through the liftable structure of the support column provided in the present utility model, it is possible to load as many goods as possible on the premise of ensuring that the vehicle does not exceed the height limit. When not loading goods usually, it can be retracted and lowered, which is beneficial for the safe and fast movement of the vehicle. In addition, the lifting adjustment of the support column also facilitates the telescopic work of the forklift arm in the horizontal state, which is beneficial for pulling out the forklift forks after the goods are loaded in place.

[0028] 4. Further, through the sliding sleeve provided in the present utility model in cooperation with the telescopic forklift arm, when it is possible to fork the goods to the front of the loading platform and the forklift arm does not exceed the limit when retracted, the telescopic arm can be made as long as possible, so that when loading goods for other platforms, the working range is larger and the loading height is higher. Description of the Drawings

[0029] Figure 1 is the structural schematic diagram of Embodiment 1 of the present utility model;

[0030] Figure 2 is the structural schematic diagram of the forklift carriage of an embodiment of the present utility model;

[0031] Figure 3 is the structural schematic diagram of Embodiment 6 of the present utility model;

[0032] Figures 4 - 7 is the structural schematic diagram of the present utility model in the working state;

[0033] In the figure: 1. Vehicle chassis, 2. Support column, 201. Slewing bearing 1, 21. Support lifting column, 22. Support lifting drive, 23. Support fixing column, 3. Fork arm, 301. Sliding sleeve, 302. Fork arm sliding drive, 4. Fork arm lifting drive, 6. Adjustment drive, 601. Connecting seat, 7. Fork rack, 701. Slewing bearing 2, 702. Back fork drive, 703. Loading plate, 71. Hanging bracket, 711. Upper hanging bracket, 712. Lower hanging bracket, 713. Fixing piece, 714. Pin hole, 72. Fork sliding rack, 73. Fork sliding drive, 8. Fork, 9. Loading platform, 10. Fork receiving cavity. Detailed implementation mode

[0034] The principle and features of the present utility model will be described below. The examples given are only used to explain the present utility model and are not used to limit the scope of the present utility model.

[0035] Embodiment 1

[0036] As Figure 1 and Figure 2 shown, this embodiment provides a forklift truck, including a vehicle chassis 1 and a forklift arm 3 carried by the vehicle. The vehicle chassis 1 is provided with lifting legs 11 for stable support during operation; a support column 2 is arranged on the vehicle chassis 1, and a forklift arm 3 is arranged on the support column 2. The forklift arm 3 is connected to the vehicle chassis 1 through the support column 2. The bottom of the tail end of the forklift arm 3 is hinged to the support column 2. The forklift arm 3 is also connected with a forklift arm lifting drive 4 for adjusting its pitching angle. In this embodiment, the forklift arm lifting drive 4 specifically adopts a hydraulic cylinder, one end of which is hinged to the support column 2 and the other end is hinged to the forklift arm 3. Through the telescopic movement of the forklift arm lifting drive 4, the up and down swinging and lifting of the forklift arm 3 are driven; the forklift arm 3 is connected with an extension drive for driving the front end thereof to extend or retract. In this embodiment, the extension drive specifically adopts a hydraulic cylinder.

[0037] The driving of the front end of the forklift arm to extend or retract described herein can be manifested as the forklift arm itself being of a telescopic arm structure form, and the front end of the forklift arm is extended or retracted through its own telescopic movement. At this time, the extension drive is the telescopic drive of the telescopic arm itself; it can also be manifested as the form that the forklift arm is slidably connected with other structures (such as the sliding sleeve described later). At this time, the extension drive realizes the front and back sliding of the forklift arm by driving the relative sliding of the two; in addition, it can also have both of the above two structural forms. At this time, the extension drive is manifested as a hydraulic cylinder for driving the telescopic movement of the telescopic arm itself and another hydraulic cylinder for driving the relative sliding of the telescopic arm and the sliding sleeve.

[0038] In this embodiment, the fork arms are of a multi-section telescopic arm structure, such as the three-section telescopic arm shown in this embodiment. The three-section telescopic arm is controlled to synchronously extend and retract through a hydraulic cylinder and chain drive. Additionally, in other embodiments, a structure form in which two hydraulic cylinders are respectively used to drive adjacent two-section telescopic arms to extend and retract can also be adopted.

[0039] A connecting seat 601 is connected to the front end of the fork arm 3. The connecting seat 601 is hinged to the fork arm 3, and the axial direction of its hinge shaft is horizontal and perpendicular to the length direction of the fork arm 3. An adjustment drive 6 is connected between the connecting seat 601 and the fork arm 3. The adjustment drive 6 specifically uses a hydraulic cylinder and is used to adjust the angle of the connecting seat 601 relative to the fork arm 3.

[0040] A fork rack 7 is provided at the front end of the fork arm 3. It is connected to the bottom of the connecting seat 601. A fork 8 is provided at the lower part of the fork rack 7. In this embodiment, the fork 8 is hung on the fork rack 7 and is used to fork up goods for operations such as transferring and stacking. When the fork arm 3 changes its pitching angle to lift or lower, the angle of the connecting seat 601 relative to the fork arm 3 is adjusted through the adjustment drive 6, and the fork 8 and the fork rack 7 swing accordingly, ensuring that the goods on the fork 8 are always placed stably.

[0041] A loading platform 9 is provided on the vehicle chassis 1 for stacking goods. The loading platform 9 of this embodiment includes a bottom plate 91, a front railing 93, a rear railing 92, and side railings 94. The bottom plate 91, the front railing 93, the rear railing 92, and the side railings 94 enclose a cargo box, and the rear railing 92 can be opened.

[0042] Application case 1 based on this embodiment: Figure 1 As shown in the non-working state, when using the fork-lift truck of this embodiment to fork and transfer the goods on the ground to its own loading platform 9 to achieve cargo loading, see Figure 4 As shown, the front end height of the fork arm 3 is adjusted through the fork arm lifting drive 4, and then the fork arm 3 extends to an appropriate length. At the same time, the fork 8 is adjusted through the adjustment drive 6 to always maintain the state of forking goods. After forking up the goods from the ground, the fork arm 3 retracts to carry the fork 8 with the goods to the loading platform 9 to complete the loading. In the non-working state, the fork 8 can be placed at a suitable position on the loading platform 9 or in the carriage.

[0043] In a preferred embodiment of the present utility model, a fork receiving cavity 10 for storing the fork 8 is provided at the rear of the fork-lift truck, and the opening faces the rear, for the fork 8 to be inserted from the rear to place the fork 8, realizing the storage of the fork when it is idle, without occupying additional vehicle body space and without increasing the vehicle body length.

[0044] More preferably, the opening of the fork receiving cavity 10 is arranged inside the rear railing 92. When in use, the fork is stored in the fork receiving cavity 10 and then the rear railing 92 is closed, with better safety.

[0045] In a preferred embodiment of the present utility model, the fork carriage 7 includes a hanging frame 71 and a fork sliding frame 72. The hanging frame 71 is connected to the bottom of the connecting seat 601. The fork sliding frame 72 is connected to the hanging frame 71 in a manner that enables horizontal sliding. A fork sliding drive 73 is connected between the fork sliding frame 72 and the hanging frame 71. The fork sliding drive 73 specifically uses a hydraulic cylinder and is used to drive the fork sliding frame 72 to carry the fork 8 and translate in the horizontal direction, facilitating the loading and unloading of goods.

[0046] Embodiment 2

[0047] Based on Embodiment 1, the fork-lift truck of this embodiment is further provided with a first slewing bearing 201. The first slewing bearing 201 is connected between the support column 2 and the vehicle chassis 1 and is used to rotate the support column 2, and the fork arm will swing left and right accordingly, expanding the working range of the fork 8.

[0048] Embodiment 3

[0049] Based on Embodiment 1 or 2, the fork-lift truck of this embodiment is further provided with a second slewing bearing 701. The fork carriage 7 is connected to the bottom of the connecting seat 601 through the second slewing bearing 701. One of the functions of the second slewing bearing 701 is that when the fork arm 3 rotates to a certain inclination angle relative to the vehicle body, the angle of the fork can be adjusted through the second slewing bearing 701 to make it parallel to the loading platform 9, facilitating the neat placement of goods; the second function of the second slewing bearing 701 is to load other vehicles with the fork-lift truck of this embodiment. At this time, by rotating the second slewing bearing 701, the fork rotates 180 degrees towards the direction away from this vehicle, that is, towards other vehicles, for transferring goods to other vehicles, as shown in Figure 5 shown.

[0050] Embodiment 4

[0051] In Embodiment 3 above, the second slewing bearing 701 is provided. During use, the angle of the connecting seat 601 relative to the fork arm 3 is adjusted through the drive 6 to keep the second slewing bearing 701 horizontal, thereby avoiding affecting the stability of the fork rotation connected to its lower part in the case of the inclination of the second slewing bearing 701. On the basis of satisfying that the second slewing bearing 701 is kept horizontal, in order to ensure the flexibility of the fork and facilitate the fork-lifting operation of the fork on the goods and ensure the stability of the goods during transfer on the fork, in this embodiment, based on Embodiment 3, the hanging frame 71 is connected to the bottom of the second slewing bearing 701 in a manner that the angle is adjustable relative to the second slewing bearing 701, as shown in Figure 1 shown. The hanging frame 71 is connected with a back-fork drive 702 for adjusting the angle formed by the fork 8 and the horizontal plane. Specifically, the back-fork drive 702 specifically uses a hydraulic cylinder. The hanging frame 71 is connected to the second slewing bearing 701 through a carrier plate 703, where the carrier plate 703 is fixed to the second slewing bearing 701, and the hanging frame 71 is hingedly connected to the carrier plate 703.

[0052] When lifting goods, the slewing bearing two 701 is adjusted to the horizontal by adjusting the drive 6, and the forklift forks 8 are adjusted to an appropriate angle by the back fork drive 702 to ensure that the forklift forks 8 can smoothly insert into the bottom of the goods. After lifting, the angle of the forklift forks is adjusted again to make the front end slightly upward, so as to avoid the natural sliding of the goods on the forklift forks 8 and ensure the stability and safety of the goods transfer. After putting down the goods, the forklift forks are adjusted to the horizontal, and the forklift forks are horizontally withdrawn to avoid scraping off the goods during the withdrawal of the upwardly inclined forklift forks.

[0053] More preferably, the top of the hanger 71 is hinged to the carrier plate 703, and the hinge point between the two and the end of the forklift forks 8 are respectively located on both sides of the axis of the slewing bearing two 701. Its function is to balance the center of gravity of the forklift fork frame and the whole forklift forks after loading the goods, making it close to the center of the slewing bearing two 701, and avoiding the problem that the outer end of the forklift forks shows a downward trend after loading the goods due to the imbalance of the center of gravity.

[0054] Embodiment 5

[0055] On the basis of the above embodiments, the support column 2 of this embodiment is set as a liftable support column, which includes a support fixed column 23 and a support lift column 21 that slides up and down with the support fixed column 23. A support lift drive 22 for driving the relative sliding of the two is connected between the support fixed column 23 and the support lift column 21, and the support lift drive 22 specifically uses a hydraulic cylinder. Its function is that, according to the height of the goods to be loaded, the support lift column 21 can be pre-lifted to a preset height, as shown in Figure 6 shown, and when not loading, the support column carrying the forklift arm is lowered to ensure the safe driving of the forklift truck.

[0056] In a preferred embodiment of the present invention, the hanger 71 includes an upper hanger 711 and a lower hanger 712. The lower hanger 712 is connected to the upper hanger 711 in a manner that can slide vertically (specifically, the lower hanger 712 is inserted into the upper hanger 711 and the two can slide relative to each other), that is, the hanger 71 can expand and contract vertically. A fixing member 713 for fixing the two is connected between the upper hanger 711 and the lower hanger 712. The fixing member 713 of this embodiment uses a fixing pin. The upper hanger 711 is provided with a pin hole 714 adapted to the fixing pin, and the lower hanger 712 is provided with multiple groups of pin holes 714 adapted to the fixing pin along the vertical direction, as shown in Figure 2As shown in the figure, after adjusting the relative positions of the upper suspension bracket 711 and the lower suspension bracket 712, a fixing pin is inserted into the pin hole 714 at the corresponding height to fix the two. Its first function is: it is convenient to transport goods with a relatively high single-piece height; the second function is: when transporting goods with a relatively high height, in order to ensure the loading space, it is not convenient to continue to lower the fork arm 3 after loading. At this time, if the fork cannot reach the fork receiving cavity 10 because the fork is at a relatively high position along with the fork arm 3, the lower suspension bracket 712 can be adjusted to extend, so that the fork 8 is lowered to a height at which it can be smoothly inserted into the fork receiving cavity 10, and then the two are fixed again by inserting a fixing pin into the pin holes at the corresponding positions of the upper suspension bracket 711 and the lower suspension bracket 712, realizing the storage of the fork after loading the goods.

[0057] Embodiment 6

[0058] In order to ensure the telescopic working range of the fork arm and at the same time avoid the overall length of the fork arm being too long, a multi-section telescopic arm as described above is often used in actual operations. In order to send the lifted goods to the front of the loading platform 9, it is often necessary to set the single-section fork arm to be relatively short, and this single-section short fork arm will affect the overall telescopic distance of the fork arm, and thus affect the working range.

[0059] Therefore, in order to take into account the telescopic distance of the fork arm and loading to the front of the loading platform 9, and at the same time avoid the fork arm occupying too much space on the vehicle body, on the basis of the above embodiment, a sliding sleeve 301 is additionally provided in this embodiment, that is, the sliding sleeve 301 is used in cooperation with the multi-section telescopic fork arm 3, as shown in Figure 3 As shown in the figure, the multi-section telescopic fork arm 3 is connected to the support column 2 through the sliding sleeve 301. The sliding sleeve 301 is hinged to the top of the support column 2. The tail end of the fork arm 3 passes through the sliding sleeve 301 and is slidably connected thereto. A fork arm sliding drive 302 for driving the relative sliding of the two is connected between the fork arm 3 and the sliding sleeve 301. The fork arm sliding drive 302 specifically uses a hydraulic cylinder. In this embodiment, the fork arm can telescopically move independently. In addition, after the fork arm retracts, the fork arm sliding drive 302 can be used to drive the entire fork arm to slide relative to the sliding sleeve 301 in the direction of the vehicle head, as shown in Figure 7 As shown in the figure, so as to smoothly send the lifted goods to the front of the loading platform 9 for subsequent placement of goods.

[0060] In other embodiments, a common non-telescopic fork arm 3 can also be used in cooperation with the sliding sleeve 301. Using the above connection relationship between the fork arm 3 and the sliding sleeve 301, the above-mentioned telescopic drive is the fork arm sliding drive 302. The front end of the fork arm 3 is controlled to extend or retract through the fork arm sliding drive 302 to complete the loading and transportation of goods.

Claims

1. A forklift truck, comprising a truck chassis (1) and a fork arm (3) attached to the truck, wherein the fork arm (3) is connected to the truck chassis (1) via a support column (2), the fork arm (3) is connected to a fork arm lifting drive (4) for adjusting its pitch angle, and the fork arm (3) is connected to an arm extension drive for driving its front end to extend or retract, characterized in that: Also includes A connecting seat (601) is arranged at the front end of the fork arm (3) and is hinged to the fork arm (3); An adjustment drive (6) connected between the connecting seat (601) and the fork arm (3) and used for adjusting the angle of the connecting seat (601) relative to the fork arm (3); The fork frame (7) is connected to the bottom of the connecting seat (601). A cargo fork (8) connected to the cargo fork frame (7); And a loading platform (9) arranged on the automobile chassis (1).

2. The forklift truck according to claim 1, characterized in that: A fork accommodating chamber (10) for storing a fork (8) is arranged at the rear of the forklift truck.

3. The forklift truck according to claim 1, characterized in that: A slewing support (201) is connected between the support column (2) and the automobile chassis (1).

4. The forklift truck according to claim 1 or 3, characterized in that: The fork frame (7) is connected to the bottom of the connecting seat (601) via a second slewing support (701).

5. The forklift truck according to claim 1, 2, 3 or 4, characterized in that: The fork frame (7) comprises a hanger (71) and a fork sliding frame (72); the hanger (71) is connected to the bottom of the connecting seat (601); the fork (8) is connected to the fork sliding frame (72); the fork sliding frame (72) is connected to the hanger (71) in a manner capable of horizontal sliding; a fork sliding drive (73) is connected between the fork sliding frame (72) and the hanger (71).

6. The forklift truck according to claim 4, characterized in that: The fork frame (7) comprises a hanger (71) and a fork sliding frame (72); the hanger (71) is connected to the bottom of the second slewing support (701) in a manner that the angle thereof is adjustable relative to the second slewing support (701); the fork (8) is connected to the fork sliding frame (72); the fork sliding frame (72) is connected to the hanger (71) in a manner that it can slide horizontally; a fork sliding drive (73) is connected between the fork sliding frame (72) and the hanger (71); and the hanger (71) is connected to a back fork drive (702) for adjusting the angle between the fork (8) and the horizontal plane.

7. The forklift truck according to claim 6, characterized in that: The hanger (71) is connected to the second slewing support (701) via a carrier plate (703), the carrier plate (703) is fixed to the second slewing support (701), the hanger (71) and the carrier plate are hingedly connected, and the hinge points of the two and the end of the fork (8) are respectively located on both sides of the axis of the second slewing support (701).

8. The forklift truck according to claim 5, 6 or 7, characterized in that: The hanger (71) comprises an upper hanger (711) and a lower hanger (712); the lower hanger (712) is connected to the upper hanger (711) in a manner capable of vertical sliding; a fixing member (713) is connected between the upper hanger (711) and the lower hanger (712) for fixing the two.

9. The forklift truck according to claim 1, characterized in that: The fork arm (3) is a telescopic arm structure, or / and, The fork arm (3) is connected to the support column (2) via a sliding sleeve (301), the sliding sleeve (301) is hinged to the top of the support column (2), the rear end of the fork arm (3) passes through the sliding sleeve (301) and is slidably connected thereto, and a fork arm sliding drive (302) is connected between the fork arm (3) and the sliding sleeve (301) for driving the two to slide relative to each other.

10. The forklift truck according to claim 1, 6 or 9, characterized in that: The support column (2) is a liftable support column, comprising a support fixing column (23) and a support lifting column (21) connected to the support fixing column (23) in an up-and-down sliding manner, and a support lifting drive (22) is connected between the support fixing column (23) and the support lifting column (21) for driving the two to slide relative to each other.

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