Single-stand-column pallet fork elevator

Abstract

The utility model discloses a single-stand-column pallet fork elevator which comprises a frame assembly which comprises a bottom frame and a stand column vertically arranged on the bottom frame. The telescopic fork cargo carrying table assembly comprises a cargo carrying table, a telescopic fork is arranged on the cargo carrying table, a support is connected to the right side of the cargo carrying table, two protruding parts are arranged on the two sides of the support, first guide assemblies are arranged on the two protruding parts, a concave part is arranged in the middle of the support, a second guide assembly is arranged on the concave part, and the support clamps a stand column. The power assembly is arranged on a power assembly mounting plate of the cargo carrying table and comprises a lifting driving unit piece and a gear; the balance weight assembly comprises a balance weight frame assembly which is arranged on the back face of the stand column and is in transmission connection with the telescopic fork cargo carrying table assembly. According to the single-stand-column pallet fork elevator, the stand column is clamped by the cargo carrying table through the guide assembly, the cargo carrying table can be stably driven by the power assembly to move up and down along the stand column, the construction time is short, the cost input is low, stability and practicability are achieved, the warehouse-in and warehouse-out efficiency is high, and the space layout limitation is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of warehousing logistics, and particularly relates to a single-column fork lifter. Background Art

[0002] Existing reciprocating elevators generally use a cargo platform or a conveyor line arranged on the cargo platform, and install a fixed conveyor line on each shelf to connect with the conveyor line arranged on the cargo platform. Therefore, for high-rise warehouses, its use cost is relatively high, and the structure is complex and difficult to install. Since the elevator and the shelf need to be connected with the conveyor line, the elevator is generally installed at both ends of the shelf. For warehouses with larger areas, the layout of the elevator will be limited. In addition, the conveyor line is usually slow, which also greatly affects the overall warehouse in and out efficiency. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a single-column fork lift, which solves the problems of long construction time, high cost investment, low warehousing efficiency and limited space layout of traditional reciprocating lifts.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] A single-column forklift, comprising: a frame assembly, including a base frame, and a column vertically arranged on the base frame, the column is provided with a vertical guide rail, and a rack is vertically arranged on the working surface of the vertical guide rail; a telescopic fork loading platform assembly, including a horizontally arranged loading platform, a telescopic fork is arranged on the loading platform, a bracket is connected to the right side of the loading platform, two protruding parts are arranged on both sides of the bracket, and a first guide assembly is respectively arranged on the two protruding parts, a recessed part is arranged in the middle of the bracket, and a second guide assembly is arranged on the recessed part, and the bracket clamps the column; the first guide assemblies on both sides of the bracket are in contact with the working surfaces of the corresponding sides on the vertical guide rail respectively, and the second guide assemblies in the middle of the bracket are in contact with the working surfaces of the corresponding sides on the vertical guide rail respectively. The component is in contact with the front side of the column; power component mounting plates are respectively arranged on the top surfaces of the two protruding parts of the bracket; the power components are respectively arranged on each of the power component mounting plates, and the power components include a lifting drive unit and a gear, the output end of the lifting drive unit is connected to the gear, the lifting drive unit drives the gear to rotate, and the gear is engaged with the rack, driving the telescopic fork cargo platform assembly to move up and down along the rack; the counterweight assembly is arranged on the back side of the column, the counterweight assembly is transmission connected to the telescopic fork cargo platform assembly, and the counterweight assembly moves in the opposite direction in coordination with the up and down movement of the telescopic fork cargo platform assembly to balance the gravity exerted on the telescopic fork cargo platform assembly.

[0006] Optionally, in the single-column forklift as described above, a four-way vehicle lifting track is also provided on the cargo platform.

[0007] Optionally, in a single-column forklift as described above, the four-way vehicle lifting track is arranged on the outside of the telescopic fork.

[0008] Optionally, in a single-column fork lift as described in any of the above, a control component for a four-way vehicle lifting track is also provided on the telescopic fork cargo platform component, and the control component includes an eccentric wheel, a rotating shaft, a control motor and a belt; the eccentric wheel is arranged below the four-way vehicle lifting track, the eccentric wheel is connected to the rotating shaft, the rotating shaft is connected to the belt, the control motor drives the belt transmission, the belt drives the rotating shaft and the eccentric wheel to rotate, and controls the lifting and lowering of the four-way vehicle lifting track.

[0009] Optionally, in a single-column fork lift as described above, the vertical guide rails on the column are T-shaped guide rails symmetrically fixed on the left and right sides thereof.

[0010] Optionally, in a single-column fork lift as described above, the first guide assembly and the second guide assembly both adopt an eccentric shaft structure, and the eccentric shaft of the first guide assembly rotates to adjust the distance between the bearing of the first guide assembly and the T-shaped guide rail; the eccentric shaft of the second guide assembly rotates to adjust the distance between the bearing of the second guide assembly and the column.

[0011] Optionally, in a single-column fork lift as described above, the counterweight frame assembly includes a counterweight frame, a counterweight block, and a buffer fixed to the bottom of the counterweight frame, and the counterweight block is arranged in the counterweight frame.

[0012] Optionally, a single-column fork lift as described above, wherein both ends of the rotating shaft are respectively fixedly connected to the eccentric wheels under the four-way vehicle lifting and traveling tracks on both sides, the eccentric wheels under the four-way vehicle lifting and traveling tracks on both sides have the same initial installation angle, and the rotating shaft is driven by a control motor and a belt to synchronously drive the eccentric wheels under the four-way vehicle lifting and traveling tracks on both sides, and the eccentric wheels under the four-way vehicle lifting and traveling tracks on both sides are synchronously driven by the rotating shaft, maintaining the same rotation direction and the same rotation angle.

[0013] Optionally, a single-column fork lift as described above, wherein the eccentric wheel is fixedly mounted on a vertical supporting structure, and the rim of the eccentric wheel abuts against the bottom of the four-way vehicle lifting track; linear bearings are also provided on both sides of the four-way vehicle lifting track, and the linear bearings have a driving direction parallel to the wheel surface of the eccentric wheel, and the linear bearings limit the four-way vehicle lifting track to move up and down only along the diameter direction of the eccentric wheel.

[0014] Optionally, in any of the single-column fork lifts described above, the first guide assembly and the second guide assembly are symmetrically arranged along the axis direction of the column.

[0015] Furthermore, a top plate is fixedly provided on the top surface of the column; the counterweight assembly also includes a sprocket assembly and a chain assembly, the sprocket assembly is fixed on the top plate, one end of the chain assembly is connected to the telescopic fork cargo platform assembly, and the other end is connected to the counterweight assembly; the sprocket assembly includes a sprocket bracket and a sprocket, the sprocket is arranged on the sprocket bracket, the sprockets are divided into two groups, two in each group, and distributed in a straight line; the chain assembly includes two chains, each chain is provided with a chain connector, and each chain works in conjunction with a group of sprockets.

[0016] The elevator hollow guide rail assembly includes two groups of elevator hollow guide rails, each group of elevator hollow guide rails is composed of a plurality of guide rails, and the elevator hollow guide rails are vertically arranged on both sides of the counterweight frame assembly, so that the counterweight frame assembly can move up and down along the elevator hollow guide rails; multiple hollow guide rails are connected by guide rail connecting plates; the elevator hollow guide rail assembly also includes an elevator guide rail fixing bracket and a counterweight assembly reinforcement support frame for fixing the elevator hollow guide rails, the elevator guide rail fixing bracket is fixed at intervals on the back of the column, and is fixedly connected to the elevator hollow guide rail; the bottom end of the counterweight assembly reinforcement support frame is fixed to the base frame, and the side is fixed to the two protruding ends of the elevator guide rail fixing bracket, and the empty space between it and the elevator guide rail fixing bracket allows the counterweight assembly to operate.

[0017] Furthermore, the counterweight assembly also includes an elevator hollow guide rail assembly and an elevator guide rail fixing bracket, the elevator hollow guide rail assembly includes two groups of vertically arranged elevator hollow guide rails; the elevator guide rail fixing bracket is fixed at intervals on the back of the column, and its two protruding ends are respectively fixedly connected to a group of elevator hollow guide rails, and the counterweight frame assembly moves along the elevator hollow guide rails.

[0018] The counterweight assembly also includes a counterweight assembly reinforcement support frame, the bottom surface of which is fixed to the base frame, and the side surface is fixedly connected to the elevator guide rail fixing bracket. A space is left between the counterweight assembly reinforcement support frame and the elevator guide rail fixing bracket to allow the counterweight assembly to operate.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The first guide assembly is provided on the two protruding parts of the right side bracket of the cargo platform of the single-column forklift of the present application, and the second guide assembly is provided on the recessed part in the middle of the bracket. The guide assembly adopts an eccentric shaft structure, and the distance between the bearing of the first guide assembly and the T-shaped guide rail of the column and the distance between the bearing of the second guide assembly and the column can be adjusted, so that the bracket clamps the column, and at the same time improves the matching stability of the cargo platform and the column, so that the up and down movement of the cargo platform is stable. Compared with the traditional reciprocating lift, the single-column forklift of the present application has a short operation time, low cost investment, stability and practicality, high efficiency in warehousing and small space layout limitations;

[0021] (2) The cargo platform is equipped with a telescopic fork, which has a fast speed and high positioning accuracy, and can greatly improve work efficiency. In addition, the cargo platform can be equipped with a four-way vehicle lifting track to meet different usage requirements. The track control component is set on the telescopic fork cargo platform component, which is staggered with the telescopic fork body and the installation position, and does not interfere with each other, so as to realize the efficient storage and retrieval of goods and the shuttle vehicle layer changing operation;

[0022] (3) An elevator guide rail fixing bracket and a counterweight assembly reinforcement support frame are provided in the counterweight assembly, and the two are fixedly connected. At the same time, the elevator guide rail fixing bracket is connected to the column, which enhances the stability of the counterweight assembly operation, plays a protective role, and also enhances the overall placement stability of the single-column hoist. It can also be extended to the top frame and used as a maintenance ladder;

[0023] (4) The T-shaped guide rails and racks on the columns can form the smallest unit modules, which can be directly spliced ​​to meet the use requirements. The unit modules can be freely added or subtracted to cope with changes in column height, thereby achieving rapid design and delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the single-column hoist of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the frame assembly of the single-column hoist of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a telescopic fork cargo platform assembly of a single-column hoist of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the relative positions of the column and the cargo platform of the single-column hoist of the utility model;

[0028] Figure 5 It is a structural schematic diagram of the first guide assembly of the single-column hoist of the utility model;

[0029] Figure 6 It is a structural schematic diagram of the second guide assembly of the single-column hoist of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the four-way vehicle lifting track of the single-column hoist of the utility model;

[0031] Figure 8 It is a structural schematic diagram of the power assembly of the single-column hoist of the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the utility model single-column hoist power assembly and frame assembly rack coordinated installation;

[0033] Fig.10It is a structural schematic diagram of the counterweight assembly of the single-column hoist of the utility model;

[0034] Fig.11 yes Fig.10 Detailed structural diagram of the hollow guide rail assembly of the elevator;

[0035] In the figure: 1, frame assembly; 2, telescopic fork cargo platform assembly; 3, power assembly; 4, counterweight assembly; 11, chassis; 12, column; 13, top plate; 121, profile; 122, T-shaped guide rail; 123, rack; 21, cargo platform; 22, telescopic fork; 23, first guide assembly; 24, second guide assembly; 25, four-way vehicle lifting track; 26, power assembly mounting plate; 27, bracket; 231, 233, first guide assembly eccentric shaft; 232, 234, first guide assembly bearing; 241, second guide assembly eccentric shaft; 242, The second guide assembly bearing; 251, eccentric wheel; 252, rotating shaft; 253, linear bearing; 31, lifting drive unit component; 32, gear; 41, counterweight frame assembly; 42, elevator hollow guide rail assembly; 43, sprocket assembly; 44, chain assembly; 411, counterweight frame; 412, counterweight block; 413, buffer; 421, elevator hollow guide rail; 422, guide rail connecting plate; 423, elevator guide rail fixing bracket; 424, counterweight assembly reinforcement support frame; 431, sprocket bracket; 432, sprocket; 441, chain; 442, chain connector. DETAILED DESCRIPTION

[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. "Up", "down", "left", "right", "front", "back", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] like Figure 1 As shown, the utility model is a single-column fork lifter, comprising a frame assembly 1, a telescopic fork loading platform assembly 2, a power assembly 3, and a counterweight assembly 4.

[0039] like Figure 2 As shown, the frame assembly 1 includes a base frame 11, a column 12 and a top plate 13. The base frame 11 adopts an integral welded frame for connecting to the ground, and the base frame size is large enough to ensure the stability of the overall placement of the single-column forklift. One end of the column 12 is vertically fixedly connected to the base frame 11, and the other end is connected to the top plate 13. It is the main force-bearing component of the entire single-column lift and is also one of the guides for the up and down movement of the telescopic fork cargo platform assembly 2.

[0040] The column 12 includes a profile 121, a T-shaped guide rail 122 and a rack 123. The T-shaped guide rail 122 is vertically arranged and fixedly connected to the profile 121; the rack 123 is vertically arranged and fixedly connected to one side working surface of the T-shaped guide rail 122. The column 12 adopts standard profiles as the main structure, with high overall strength to meet the requirements of high-rise heavy loads. The left and right sides of the column 12 are provided with T-shaped guide rails and racks 123. The T-shaped guide rails 122 and the racks 123 can form the smallest unit module, which can be directly spliced ​​to meet the use requirements. The free increase or decrease of unit modules can cope with the changes in the height of the column, thereby achieving rapid design and delivery.

[0041] like Figure 3 As shown, the telescopic fork cargo platform assembly 2 includes a cargo platform 21, a telescopic fork 22, a first guide assembly 23, a second guide assembly 24, a four-way vehicle lifting and driving track 25 and a power assembly mounting plate 26. The cargo platform 21 is welded by an integral frame, which has a simple structure and high strength, reduces the manufacturing precision and manufacturing cost, and also reduces the weight of the telescopic fork cargo platform assembly 2, thereby reducing the driving power of the lifting drive unit 31. The plane of the cargo platform 21 is perpendicular to the column 12, and the right side thereof is fixedly connected to the bracket 27. The bracket 27 adopts a "concave" clamping structure. Two first guide assemblies 23 are symmetrically arranged on the two protruding parts of the bracket 27, and two second guide assemblies 24 are arranged on the concave part of the bracket 27. The first guide assembly 23 and the second guide assembly 24 are respectively symmetrically arranged along the axis direction of the column 12. Through the first guide assembly 23 and the second guide assembly 24, the cargo platform 21 clamps the column 12, the concave part of the bracket 27 faces the front of the column 12, and the two protruding parts contact the left and right sides of the column 12. Two power assembly mounting plates 26 are symmetrically fixedly disposed on the top surfaces of the two protruding portions of the bracket 27 .

[0042] like Figure 3 , 4As shown in Figures 5 and 6, the two first guide assemblies 23 are in contact with the other side working surface of the corresponding T-shaped guide rail 122, that is, the opposite surface of the top surface of the T-shaped guide rail 122 and the mounting surface of the rack 123, and the two second guide assemblies 24 are in contact with the front surface of the column 12, which improves the stability of the up and down movement of the cargo platform 21. The first guide assembly 23 and the second guide assembly 24 both adopt an eccentric shaft structure. The eccentric shafts 231 and 233 of the first guide assembly rotate to adjust the distance between the bearings 232 and 234 of the first guide assembly and the T-shaped guide rail 122; the eccentric shaft 241 of the second guide assembly rotates to adjust the distance between the bearing 242 of the second guide assembly and the column 12. The two cooperate to improve the matching stability between the cargo platform 21 and the column 12. When the telescopic fork cargo platform assembly 2 is working, as shown in Figures 5 and 6, the two first guide assemblies 23 and 24 are in contact with the front surface of the column 12, which improves the stability of the cargo platform 21 and the column 12. Figure 4 As shown, the bracket 27 clamps the column 12 , and at this time, the bearings 232 , 234 of the two first guide assemblies 23 are in contact with the T-shaped guide rail 122 of the column 12 , and the two bearings 242 of the two second guide assemblies 24 are in contact with the front side of the column 12 .

[0043] Furthermore, the telescopic fork 22 is arranged on the surface of the cargo platform 21, driven by power, and consists of upper, middle and lower forks. The lower fork is fixed on the cargo platform 21. The three forks are linearly differentially extended and retracted through chain drive and gear rack drive, and the cargo platform 21 is lifted and lowered to carry out the goods. The pallet goods on the shelf can be quickly stored and retrieved. Compared with the traditional chain machine and four-way vehicle for storing and retrieving goods, the telescopic fork has a fast speed and high positioning accuracy, which can greatly improve work efficiency.

[0044] like Figure 7As shown, the two sides of the telescopic fork 22 on the cargo platform 21 can be optionally equipped with a four-way vehicle lifting and traveling track 25 that can be lifted up and down. The control component of the four-way vehicle lifting and traveling track 25 is arranged on the telescopic fork cargo platform assembly 2, staggered with the telescopic fork 22 body and the installation position, and does not interfere with each other. When the telescopic fork 22 is working, the four-way vehicle lifting and traveling track 25 is hidden under the telescopic fork 22. The control component of the four-way vehicle lifting and traveling track 25 includes an eccentric wheel 251, a rotating shaft 252, a control motor, and a belt. The eccentric wheel 251 is arranged below the four-way vehicle lifting and traveling track 25 and is fixedly installed on the vertical support structure. The rim of the eccentric wheel 251 abuts against the bottom of the four-way vehicle lifting and traveling track 25, and the eccentric wheels 251 all have the same initial installation angle. The eccentric wheel 251 is fixedly connected to the rotating shaft 252, and the rotating shaft 252 is connected to the belt. The control motor drives the belt transmission, and the belt drives the rotating shaft 252 to rotate. The eccentric wheel 251 is synchronously driven by the rotating shaft 252, maintaining the same rotation direction and the same rotation angle, and the four-way vehicle lifting track 25 can be adjusted to quickly lift and lower, meeting the needs of the four-way vehicle to quickly change floors. In addition, a plurality of groups of linear bearings 253 are also arranged on both sides of the four-way vehicle lifting track 25. The linear bearings 253 have a driving direction parallel to the wheel surface of the eccentric wheel 251. The linear bearings 253 limit the four-way vehicle lifting track 25 to move up and down only along the diameter direction of the eccentric wheel 251, and the up and down lifting is stable.

[0045] like Figure 8 As shown, the power assembly 3 includes a lifting drive unit 31, the output shaft of the lifting drive unit 31 is connected to the gear 32 through a tightening sleeve, and the lifting drive unit 31 drives the gear 32 to rotate, so that the cargo platform 21 is raised and lowered, thereby realizing cargo storage and retrieval and shuttle vehicle layer changing operations.

[0046] like Fig. 9 As shown, the lifting drive unit 31 adopts a servo motor, and the gear 32 cooperates with the rack 123 for transmission, which can always maintain stable operation and high positioning accuracy. There is no need to install an anti-fall device, and there is no risk of accidental falling of the cargo platform 21.

[0047] like Fig.10 , 11As shown, the utility model hoist is also provided with a counterweight assembly 4, which can balance the weight and make the lifting process more stable and safe. The counterweight assembly 4 comprises a counterweight frame assembly 41, an elevator hollow guide rail assembly 42, a sprocket assembly 43 and a chain assembly 44. The counterweight frame assembly 41 and the elevator hollow guide rail assembly 42 are arranged on the back of the column 12, and the sprocket assembly 43 is arranged on the top plate of the column 12. The counterweight frame assembly 41 comprises a counterweight frame 411, a plurality of counterweight blocks 412, and a buffer 413 fixed at the bottom of the counterweight frame assembly. The counterweight blocks 412 are arranged in the counterweight frame 411. When the control system fails during the movement of the counterweight frame 411, the buffer 413 plays a buffering role to prevent the counterweight frame 411 from directly hitting the bottom, thereby protecting the safety of the equipment. The counterweight frame assembly 41 is connected to the telescopic fork cargo platform assembly 2 through the sprocket assembly 43 and the chain assembly 44.

[0048] The sprocket assembly 43 includes a sprocket bracket 431 and a sprocket 432. The sprocket 432 is arranged on the sprocket bracket 431. The sprockets 432 are divided into two groups, each group has two sprockets, and are distributed in a straight line. The chain assembly 44 includes two chains 441. Each chain 441 is fixed with a chain connector 442 on both sides connecting the counterweight frame assembly 41 and the telescopic fork cargo platform assembly 2. Each chain 441 works in conjunction with a group of sprockets 432. One end of the chain assembly 44 is connected to the telescopic fork cargo platform assembly 2, and the other end is connected to the counterweight frame assembly 41, which balances the weight of the two, reduces the driving power of the lifting drive unit 31, and plays a role in energy saving.

[0049] Furthermore, the sprocket chain may also be arranged by a combination of a synchronous pulley and a synchronous belt or a pulley and a steel rope.

[0050] The elevator hollow guide rail assembly 42 includes two sets of elevator hollow guide rails 421, an elevator guide rail fixing bracket 423 for fixing the elevator hollow guide rails 421, and a counterweight assembly reinforcement support frame 424. Each set of elevator hollow guide rails 421 is composed of a plurality of vertical guide rails, and the plurality of hollow guide rails are connected by a guide rail connecting plate 422 arranged behind the guide rails; the elevator guide rail fixing bracket 423 is a concave structure, the plane side is fixed to the back of the column 12 at intervals, and the inner sides of the two protruding ends are fixedly connected to the guide rail connecting plate 422. The elevator hollow guide rails 421 are vertically arranged on both sides of the counterweight frame assembly 41, so that the counterweight frame assembly 41 can move up and down along the elevator hollow guide rails 421. The counterweight assembly reinforcement support frame 424 further enhances the fixing effect, allowing the counterweight frame assembly 41 to run smoothly. Its bottom surface is fixed to the base frame 11, and the sides are fixed to the two protruding ends of the elevator guide rail fixing bracket 423. A certain space is provided between it and the elevator guide rail fixing bracket 423, allowing the counterweight frame assembly 41 to run in the space, thereby enhancing the stability of the operation of the counterweight assembly 4 and playing a protective role. At the same time, the counterweight assembly 4 is also fixed to the base frame 11 and the column 12, thereby enhancing the stability of the overall placement of the single-column hoist.

[0051] Furthermore, the elevator guide rail fixing bracket 423 and the counterweight assembly reinforcing support frame 424 can be extended to the top frame and used as a maintenance ladder.

[0052] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A single-column fork lift, characterized in that: include: A frame assembly (1) comprises a base frame (11) and a column (12) vertically arranged on the base frame (11), wherein a vertical guide rail is arranged on the column (12), and a rack (123) is vertically arranged on the working surface of the vertical guide rail; A telescopic fork cargo platform assembly (2) comprises a cargo platform (21) arranged horizontally, a telescopic fork (22) being arranged on the cargo platform (21), a bracket (27) being connected to the right side of the cargo platform (21), two protruding parts being arranged on both sides of the bracket (27), a first guide assembly (23) being arranged on each of the two protruding parts, a recessed part being arranged in the middle of the bracket (27), a second guide assembly (24) being arranged on the recessed part, and the bracket (27) clamps the column (12); the first guide assemblies (23) on both sides of the bracket (27) are in contact with the working surfaces on the corresponding sides of the vertical guide rail respectively, and the second guide assembly (24) in the middle of the bracket (27) is in contact with the front side of the column (12); power assembly mounting plates (26) are also arranged on the top surfaces of the two protruding parts of the bracket (27); A power assembly (3) is respectively arranged on each of the power assembly mounting plates (26), the power assembly (3) comprising a lifting drive unit (31) and a gear (32), the output end of the lifting drive unit (31) is connected to the gear (32), the lifting drive unit (31) drives the gear (32) to rotate, the gear (32) is meshed with the rack (123), and drives the telescopic fork cargo platform assembly (2) to move up and down along the rack (123); A counterweight assembly (4) is arranged on the back of the column (12), and the counterweight assembly (4) is in transmission connection with the telescopic fork cargo platform assembly (2). The counterweight assembly (4) moves in the opposite direction in coordination with the up and down movement of the telescopic fork cargo platform assembly (2) to balance the gravity exerted on the telescopic fork cargo platform assembly (2).

2. A single-column forklift according to claim 1, characterized in that: The cargo platform (21) is also provided with a four-way vehicle lifting and traveling track (25).

3. A single-column forklift according to claim 2, characterized in that: The four-way vehicle lifting and traveling track (25) is arranged on the outside of the telescopic fork (22).

4. A single-column forklift according to claim 3, characterized in that: A control component for the four-way vehicle lifting travel track (25) is also arranged on the telescopic fork cargo platform component (2), and the control component comprises an eccentric wheel (251), a rotating shaft (252), a control motor and a belt; the eccentric wheel (251) is arranged below the four-way vehicle lifting travel track (25), the eccentric wheel (251) is connected to the rotating shaft (252), the rotating shaft (252) is connected to the belt, the control motor drives the belt transmission, the belt drives the rotating shaft (252) and the eccentric wheel (251) to rotate, and the lifting and lowering of the four-way vehicle lifting travel track (25) is controlled.

5. The single-column fork lift according to claim 1, characterized in that: The vertical guide rails on the upright column (12) are T-shaped guide rails (122) respectively fixed on the left and right sides thereof and symmetrically arranged.

6. The single-column fork lift according to claim 1, characterized in that: The first guide assembly (23) and the second guide assembly (24) both adopt an eccentric shaft structure; the eccentric shaft (231, 233) of the first guide assembly rotates to adjust the distance between the first guide assembly bearing (232, 234) and the T-shaped guide rail (122); the eccentric shaft (241) of the second guide assembly rotates to adjust the distance between the second guide assembly bearing (242) and the column (12).

7. The single-column fork lift according to claim 1, characterized in that: The counterweight assembly (4) comprises a counterweight frame assembly (41), and the counterweight frame assembly (41) comprises: A counterweight frame (411), a counterweight block (412), and a buffer (413) fixed at the bottom of the counterweight frame (411), wherein the counterweight block (412) is arranged in the counterweight frame (411).

8. The single-column fork lift according to claim 4, characterized in that: The two ends of the rotating shaft (252) are respectively fixedly connected to the eccentric wheels (251) below the lifting and running tracks (25) of the four-way vehicle on both sides. The eccentric wheels (251) below the lifting and running tracks (25) of the four-way vehicle on both sides have the same initial installation angle. The rotating shaft (252) is driven by a control motor and a belt to synchronously drive the eccentric wheels (251) below the lifting and running tracks (25) of the four-way vehicle on both sides. The eccentric wheels (251) below the lifting and running tracks (25) of the four-way vehicle on both sides are synchronously driven by the rotating shaft (252) to maintain the same rotation direction and the same rotation angle.

9. The single-column forklift according to claim 8, characterized in that: The eccentric wheel (251) is fixedly mounted on the vertical support structure, and the rim of the eccentric wheel (251) abuts against the bottom of the four-way vehicle lifting and traveling track (25); Linear bearings (253) are also provided on both sides of the four-way vehicle lifting travel track (25), and the linear bearings (253) have a driving direction parallel to the wheel surface of the eccentric wheel (251). The linear bearings (253) limit the four-way vehicle lifting travel track (25) to move up and down only along the diameter direction of the eccentric wheel (251).

10. The single-column fork lift according to claim 1, characterized in that: The first guide assembly (23) and the second guide assembly (24) are symmetrically arranged along the axis direction of the column (12).

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