A high-level picking vehicle convenient to maintain

Abstract

The utility model relates to the technical fields of picking car, and specifically disclose a high -level picking car convenient to maintain, including frame mechanism, portal mechanism, hydraulic pressure mechanism and limiting mechanism, limiting mechanism includes fixed base, limiting axle and limiting baffle, is equipped with first limiting groove and second limiting groove on limiting axle, limiting baffle can selectively card into different limiting groove and make limiting axle be in different positions, when limiting baffle card into first limiting groove, limiting axle contracts in fixed base, when card into second limiting groove, limiting axle unfolds outside fixed base, and the cabin is equipped with lift switch, and the operator can control the portal to rise to the preset height through the switch and make hydraulic pressure mechanism expose, avoid operator high -level operation, and will limiting axle switch to second position, make it with portal bottom abutment limit portal downlink, through limiting mechanism and lift switch cooperation effectively guarantee the safety of maintenance personnel when maintaining hydraulic pressure mechanism, improve the maintenance convenience and safety of high -level picking car.

Description

Technical Field

[0001] This utility model relates to the technical field of high-level picking vehicles, and specifically to a high-level picking vehicle that is easy to maintain. Background Technology

[0002] High-bay order pickers are a type of material handling equipment commonly used in warehousing and logistics, primarily for picking operations on high-bay racks. With the rapid development of the logistics industry, the application of high-bay order pickers is becoming increasingly widespread, and their safety and ease of maintenance are receiving increasing attention.

[0003] However, there are still some problems that need to be solved during the maintenance of existing high-level picking vehicles:

[0004] First, when repairing the hydraulic mechanism, since the hydraulic mechanism is usually located between the gantry and the cabin, the gantry needs to be raised to expose the hydraulic mechanism for maintenance. In order to prevent the gantry from accidentally falling and injuring personnel during maintenance, it is usually necessary to use a gantry crane to suspend the gantry or to place wooden blocks between the gantry and the ground for fixation. This operation is not only cumbersome, but also requires additional auxiliary equipment. Moreover, the operator needs to stand on the operating platform of the gantry and step on the pedal to control the raising and lowering of the gantry, which increases the complexity of maintenance and safety risks.

[0005] Secondly, when maintaining the control unit inside the control compartment, the control compartment cover of the existing high-level picking vehicle is usually fixed by a threaded connection. Each maintenance requires the removal of multiple bolts, which is cumbersome and time-consuming. At the same time, maintenance personnel also need to bring their own tools. If they forget to bring them or the tools are not suitable, it will affect the maintenance efficiency.

[0006] In addition, existing high-level picking vehicles lack effective support mechanisms and safety control measures when the control compartment cover is opened for maintenance, which can easily lead to safety hazards such as the cover closing unexpectedly or the vehicle traveling at high speed during maintenance. Utility Model Content

[0007] This utility model addresses the aforementioned problems and aims to provide a high-level picking cart that is easy to maintain. The limiting mechanism solves the problem of the mast easily falling off, improving the convenience of maintenance and reducing safety risks. At the same time, the rotatable flip cover solves the problem of inconvenient disassembly and assembly, improving the convenience of maintenance.

[0008] To achieve the above objectives, this utility model provides a high-level picking vehicle that is easy to maintain, including a frame mechanism, a mast mechanism, and a hydraulic mechanism. The frame mechanism includes a frame and a compartment located at the rear end of the frame. The mast mechanism includes a mast that can be lifted and lowered on the frame and forks that can be lifted and lowered on the mast. The mast is located at the front end of the frame. The hydraulic mechanism is located between the compartment and the mast, and is used to provide power for the lifting and lowering movement of the mast and the forks. The vehicle also includes:

[0009] The limiting mechanism includes a fixed seat, a limiting shaft, and a limiting baffle located on one side of the gantry. The limiting shaft is movably disposed on the fixed seat and is provided with a first limiting groove and a second limiting groove arranged at intervals. The limiting baffle is movably disposed on the fixed seat and configured to selectively engage with the first limiting groove or the second limiting groove. The limiting shaft has a first position and a second position.

[0010] When the limiting baffle is engaged in the first limiting groove, the first end of the limiting shaft retracts into the fixed seat, and the limiting shaft is in the first position;

[0011] When the limiting baffle is engaged in the second limiting groove, the first end of the limiting shaft extends outside the fixed base, and the limiting shaft is in the second position;

[0012] The cabin is equipped with a lifting switch for controlling the raising or lowering of the gantry;

[0013] The operator can control the gantry to rise to a first preset height via the lifting switch to expose the hydraulic mechanism, and the limiting shaft can be switched to a second position, with the first end of the limiting shaft abutting against the bottom of the gantry to restrict the gantry from descending.

[0014] According to the above-described high-level picking vehicle that is easy to maintain, the mast includes an outer mast fixed to the vehicle frame, a middle mast that can be lifted and lowered inside the outer mast, and an inner mast that can be lifted and lowered inside the middle mast.

[0015] A through area is provided between the two sides of the outer gantry, and the hydraulic mechanism is located directly behind the through area.

[0016] According to the above-described high-level picking vehicle that is easy to maintain, the fixed seat is fixed on one side of the outer mast, and when the limiting shaft is in the second position, the first end of the limiting shaft is located directly below the middle mast.

[0017] The second end of the limiting shaft is provided with a limiting retaining ring, which can abut against the side of the fixed seat away from the middle gantry.

[0018] According to the above-described high-level picking vehicle that is easy to maintain, the limiting baffle is arranged vertically on the fixed seat. The limiting baffle includes a snap-fit ​​end that can be snapped into the first limiting groove or the second limiting groove and an mounting end away from the snap-fit ​​end. The mounting end is connected to the fixed seat through a mounting shaft.

[0019] The mounting end is provided with an adjustment groove arranged in the vertical direction, and the mounting shaft is movably inserted into the adjustment groove.

[0020] According to the above-described easy-to-maintain high-level picking vehicle, the limiting mechanism further includes a locking handle, which is connected to the end of the mounting shaft away from the fixed seat and is used to clamp or release the limiting baffle.

[0021] According to the above-described high-level picking vehicle that is easy to maintain, the top of the cabin is provided with a control compartment, the control compartment is provided with multiple control units, the lifting switch is located in the control compartment, and the opening on the top of the control compartment is provided with a rotatable flip cover.

[0022] According to the above-described high-level picking vehicle that is easy to maintain, a first mounting plate and a second mounting plate are respectively provided at both ends of one side of the flip cover, and a first mounting seat and a second mounting seat are respectively provided at both ends of the control compartment. The first mounting plate is rotatably connected to the first mounting seat through a pin, and the second mounting plate is rotatably connected to the second mounting seat through a pin.

[0023] According to the above-described high-level picking vehicle that is easy to maintain, one end of the first mounting plate is connected to the first mounting seat through the pin, and the other end of the first mounting plate is provided with a support rod. The first mounting seat is provided with a positioning groove. When the flip cover is opened, one end of the support rod can be inserted into the positioning groove to support the flip cover.

[0024] The above-described easy-to-maintain high-level picking vehicle also includes a drive mechanism, which includes a drive wheel assembly located at the bottom of the frame. A limit switch is provided on the second mounting base. The limit switch is electrically connected to the drive wheel assembly and can control the speed of the drive wheel assembly. When the flip cover is opened, the limit switch can control the drive wheel assembly to travel at a speed of less than 5 km / h.

[0025] According to the above-described easy-to-maintain high-level picking vehicle, one of the control units is configured as a lowering valve, which is connected to the hydraulic mechanism and used to control the descent of the gantry. The control compartment is also provided with a placement seat, on which a plurality of Allen wrenches are provided, which are configured to operate the lowering valve.

[0026] This utility model has the following beneficial effects:

[0027] 1. By setting a limit mechanism, when the gantry rises to the preset height, the gantry can be mechanically locked by the extension of the limit shaft, which avoids the need to prepare other hoisting equipment or pads, simplifies the maintenance operation process, and improves maintenance efficiency.

[0028] 2. By installing a lifting switch inside the cabin to control the raising or lowering of the gantry, the operator is prevented from standing on the gantry to operate the equipment, thus improving safety performance;

[0029] 3. The top of the control compartment adopts a flip-top design, and with the automatic support function of the support rod, the operator does not need to hold the cover by hand, which improves the convenience of operation;

[0030] 4. When the flip cover is opened, a limit switch can be triggered, realizing the safety control of automatic low-speed driving of the vehicle, effectively preventing safety accidents caused by high-speed driving of the vehicle during maintenance.

[0031] 5. The control compartment is equipped with an Allen wrench holder, which solves the problem of having to bring your own tools during maintenance, further improving the convenience of maintenance and reducing maintenance preparation time. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0033] Figure 2 This is a schematic diagram of the overall rear structure of the embodiment;

[0034] Figure 3 This is a schematic diagram of the limiting mechanism structure in an embodiment;

[0035] Figure 4 This is a schematic diagram of the internal structure of the control compartment in an embodiment;

[0036] Figure 5 This is a schematic diagram of the assembly of the lifting switch in the control compartment according to the embodiment;

[0037] Figure 6 This is an assembly diagram of the placement seat in the control compartment according to an embodiment.

[0038] In the picture:

[0039] 100. Chassis mechanism; 110. Chassis; 120. Cabin; 121. Lifting switch; 122. Control compartment; 122a. Lowering valve; 122b. First mounting base; 122c. Second mounting base; 122d. Positioning groove; 122e. Limit switch; 122f. Placement seat; 122g. Allen wrench; 123. Flip cover; 123a. First mounting plate; 123b. Second mounting plate; 123c. Support rod;

[0040] 200. Mast mechanism; 210. Mast; 211. Outer mast; 212. Middle mast; 213. Inner mast; 220. Forks;

[0041] 300. Hydraulic mechanism;

[0042] 400, Limiting mechanism; 410, Fixed seat; 420, Limiting shaft; 421, First limiting groove; 422, Second limiting groove; 423, Limiting retaining ring; 430, Limiting baffle; 431, Adjusting groove; 440, Tightening handle; 500, Drive mechanism; 510, Drive wheel set. Detailed Implementation

[0043] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0044] like Figure 1-6 As shown, a high-level picking vehicle that is easy to maintain includes a frame mechanism 100, a gantry mechanism 200, a hydraulic mechanism 300, a limiting mechanism 400, and a drive mechanism 500.

[0045] The frame mechanism 100 includes a frame 110 and a compartment 120 located at the rear end of the frame 110. The frame 110 is the main support structure of the high-level picking cart, made of steel, and has sufficient strength and rigidity to support the weight of the entire high-level picking cart. The compartment 120 is located at the rear end of the frame 110 and is used to house the control system, electrical system, and some components of the hydraulic mechanism 300. The drive mechanism 500 includes a drive wheel set 510 located at the bottom of the frame 110, which can drive the entire structure to move. The mast mechanism 200 includes a mast 210 that can be raised and lowered on the frame 110 and forks 220 that can be raised and lowered on the mast 210. Of course, in this embodiment, the mast mechanism 200 also includes an operating platform, which is raised and lowered on the mast 210, allowing the operator to stand on the operating platform to operate the picking cart. The hydraulic mechanism 300, located between the cabin 120 and the mast 210, provides power for the lifting and lowering movement of the mast 210 and the forks 220. In this embodiment, a lifting switch 121 is provided inside the cabin 120. The lifting switch 121 is electrically connected to the hydraulic mechanism 300 and can control the lifting and lowering of the mast 210 through the hydraulic mechanism 300. Under normal use, the operator can control the lifting and lowering of the mast 210 by using a pedal on the operating platform. However, under maintenance conditions, if the lifting and lowering control is still used by using the pedal on the operating platform, an operator must be raised with the mast 210, which increases the overall weight of the mast 210 and increases the safety risk. Therefore, adding the lifting switch 121 can facilitate the lifting and lowering operation of the mast 210 during maintenance and reduce the safety risk.

[0046] Specifically, the limiting mechanism 400 includes a fixed base 410 located on one side of the gantry 210, a limiting shaft 420, and a limiting baffle 430. The limiting shaft 420 is movably mounted on the fixed base 410, meaning that the limiting shaft 420 can move on the fixed base 410. The limiting shaft 420 is provided with a first limiting groove 421 and a second limiting groove 422 arranged at intervals. The limiting baffle 430 is movably mounted on the fixed base 410 and configured to selectively engage with the first limiting groove. When the limiting baffle 430 is engaged in the first limiting groove 421 or the second limiting groove 422, it can position the limiting shaft 420 and restrict its continued displacement. However, the position of the limiting shaft 420 will be different depending on which limiting groove it is engaged in. Therefore, the limiting shaft 420 has at least a first position and a second position. That is, when the limiting baffle 430 is engaged in the first limiting groove 421, the first end of the limiting shaft 420 is retracted to the fixed seat 410. Inside, the limiting shaft 420 is in the first position. When the limiting baffle 430 is engaged in the second limiting groove 422, the first end of the limiting shaft 420 extends outside the fixed seat 410, and the limiting shaft 420 is in the second position. When maintenance is required, the operator can control the gantry 210 to rise to the first preset height through the lifting switch 121. The first preset height is higher than the height of the limiting shaft 420, which can expose the hydraulic mechanism 300. At the same time, the limiting shaft 420 is switched to the second position. At this time, the first end of the limiting shaft 420 is located directly below the gantry 210. The first end of the limiting shaft 420 can abut against the bottom of the gantry 210 to achieve mechanical locking of the gantry 210 and restrict the gantry 210 from descending. At this time, maintenance personnel can inspect the hydraulic mechanism 300 through the area below the gantry 210. Due to the presence of the limiting shaft 420, even if the hydraulic system fails, the gantry 210 will not descend unexpectedly, ensuring the safety of maintenance personnel.

[0047] The working principle of this high-level picking vehicle is as follows:

[0048] Under normal working conditions, the limit baffle 430 is engaged in the first limit groove 421, the limit shaft 420 is in the first position, and its first end is retracted into the fixed seat 410, which will not interfere with the normal lifting and lowering movement of the mast 210. The operator can control the lifting and lowering of the mast 210 and the forks 220 through the lifting switch 121 to realize the picking and handling of goods.

[0049] When maintenance is required on the hydraulic mechanism 300, the operator can control the gantry 210 to rise to the first preset height via the lifting switch 121, exposing the hydraulic mechanism 300. Then, the operator can remove the limiting baffle 430 from the first limiting groove 421 and insert it into the second limiting groove 422, causing the limiting shaft 420 to switch to the second position, with its first end extended outside the fixed base 410 and located directly below the middle gantry 212210. In this way, even if the hydraulic system fails, the gantry 210 will not fall unexpectedly, ensuring the safety of maintenance personnel.

[0050] After maintenance, the operator can remove the limit baffle 430 from the second limit groove 422 and insert it into the first limit groove 421, so that the limit shaft 420 switches back to the first position and restores the normal working state.

[0051] In this embodiment, the hydraulic mechanism 300 includes hydraulic components such as lifting cylinders, oil pipes, and hydraulic valves.

[0052] Furthermore, the mast 210 includes an outer mast 211, a middle mast 212, and an inner mast 213. The outer mast 211 is fixed to the front end of the frame 110. The middle mast 212 is movably mounted inside the outer mast 211 and can be connected to the outer mast 211 via rollers and guide rails to ensure the smoothness of its lifting movement. The inner mast 213 is movably mounted inside the middle mast 212 and can also be connected to the middle mast 212 via rollers and guide rails. The forks 220 are movably mounted on the inner mast 213 for carrying and transporting goods.

[0053] A through area is provided between the two sides of the outer gantry 211, forming an open space that is convenient for the operator to observe and maintain. The hydraulic mechanism 300 is located directly behind the through area. This layout design allows the hydraulic mechanism 300 to be exposed after the middle gantry 212 is raised to a certain height, making it convenient for maintenance and repair.

[0054] Furthermore, the fixing seat 410 is fixed to one side of the outer gantry 211. When the limiting shaft 420 is in the second position, the first end of the limiting shaft 420 is located directly below the middle gantry 212, which can support the middle gantry 212 and lock it. The second end of the limiting shaft 420 is provided with a limiting retaining ring 423. The limiting retaining ring 423 can abut against the side of the fixing seat 410 away from the middle gantry 212 to prevent the limiting shaft 420 from completely detaching from the fixing seat 410. The limiting retaining ring 423 is made of elastic material, which can reduce impact and noise.

[0055] Furthermore, the limiting baffle 430 is arranged vertically on the fixed base 410, including a snap-fit ​​end and a mounting end. The snap-fit ​​end can snap into the first limiting groove 421 or the second limiting groove 422 to control the position of the limiting shaft 420. The mounting end is connected to the fixed base 410 through a mounting shaft. The mounting end is provided with an adjustment groove 431 arranged vertically, and the mounting shaft moves through the adjustment groove 431. This design allows the limiting baffle 430 to be adjusted vertically, thereby enabling it to snap into or disengage from the first limiting groove 421 or the second limiting groove 422. Only after the snap-fit ​​end disengages from the first limiting groove 421 and the second limiting groove 422 can the limiting shaft 420 be displaced to adjust its position.

[0056] Furthermore, the limiting mechanism 400 also includes a locking handle 440, which is connected to the end of the mounting shaft away from the fixed seat 410. The locking handle 440 is used to clamp or release the limiting baffle 430. When it is necessary to adjust the position of the limiting baffle 430, the locking handle 440 can be loosened, the position of the limiting baffle 430 can be adjusted, and then the locking handle 440 can be tightened again to fix the position of the limiting baffle 430, ensuring that the position of the limiting baffle 430 will not move arbitrarily and improving the limiting stability.

[0057] In this embodiment, a control compartment 122 is provided on the top of the cabin 120. The control compartment 122 contains multiple control units, including electrical controllers, relays, contactors, fuses, hydraulic valves, etc. A lifting switch 121 is located in the control compartment 122 and is used to control the raising and lowering of the gantry 210. Under normal use, the control units and the lifting switch 121 do not need to be operated. The control compartment 122 will only be opened when the corresponding component malfunctions or special operation is required. A rotatable flip cover 123 is provided on the opening at the top of the control compartment 122. A handle is provided on the flip cover 123. The flip cover 123 can be flipped by pulling the handle to achieve quick opening or closing, which is convenient for the operator to maintain.

[0058] Furthermore, a first mounting plate 123a and a second mounting plate 123b are respectively provided at both ends of one side of the flip cover 123, and a first mounting seat 122b and a second mounting seat 122c are respectively provided at both ends of the control compartment 122. The first mounting plate 123a is rotatably connected to the first mounting seat 122b through a pin, and the second mounting plate 123b is rotatably connected to the second mounting seat 122c through a pin, so that the flip cover 123 can rotate around the pin to realize the opening and closing functions.

[0059] Furthermore, one end of the first mounting plate 123a is connected to the first mounting base 122b via a pin, and the other end of the first mounting plate 123a is provided with a support rod 123c. The first mounting base 122b is provided with a positioning groove 122d. When the flip cover 123 is opened, one end of the support rod 123c can rotate together with the first mounting plate 123a, and the other end of the support rod 123c can move and extend into the positioning groove 122d to achieve mechanical support for the flip cover 123 and prevent it from falling. At the same time, when operating or maintaining the electronic control unit in the control compartment 122, it is not necessary to manually support the flip cover 123.

[0060] Furthermore, the second mounting base 122c is equipped with a limit switch 122e, which is electrically connected to the drive wheel assembly 510 and can control the speed of the drive wheel assembly 510. When the flip cover 123 is opened, the limit switch 122e can control the drive wheel assembly 510 to travel at a speed of less than 5 km / h. Therefore, when the flip cover 123 is opened, it will trigger the limit switch 122e to limit the speed of the drive wheel assembly 510, thereby limiting the overall speed of the picking cart and preventing safety accidents caused by high-speed travel during maintenance.

[0061] Furthermore, one of the control units is configured as a lowering valve 122a, which is connected to the hydraulic mechanism 300 and used to control the descent of the gantry 210. The control compartment 122 is also equipped with a placement seat 122f, on which multiple hex wrenches 122g are mounted. The hex wrenches 122g are configured to operate the lowering valve 122a. In an emergency, the operator can manually operate the lowering valve 122a to control the descent of the gantry 210, which improves the safety and reliability of the equipment. Since the tool placement seat 122f can be directly set in the control compartment 122, it avoids repeatedly taking out operating tools, making maintenance convenient. Therefore, the multiple hex wrenches 122g are configured as wrenches of different diameters, which can be used for workpieces of different sizes.

[0062] This embodiment discloses a high-level picking vehicle that is easy to maintain, including a frame mechanism 100, a mast mechanism 200, a hydraulic mechanism 300, and a limiting mechanism 400. The limiting mechanism 400 includes a fixed base 410, a limiting shaft 420, and a limiting baffle 430. The limiting shaft 420 is provided with a first limiting groove 421 and a second limiting groove 422. The limiting baffle 430 can selectively engage with different limiting grooves to place the limiting shaft 420 in different positions. When the limiting baffle 430 engages with the first limiting groove 421, the limiting shaft 420 retracts into the fixed base 410; when it engages with the second limiting groove 422, the limiting shaft 420 retracts into the fixed base 410; when it engages with the second limiting groove 422, the limiting shaft 420 retracts into the fixed base 421. At position 2, the limiting shaft 420 extends outside the fixed base 410. A lifting switch 121 is installed inside the cabin 120. The operator can use this switch to control the gantry 210 to rise to a preset height, exposing the hydraulic mechanism 300 and preventing the operator from standing on the gantry 210 to perform lifting operations. The limiting shaft 420 is then switched to the second position, so that it abuts against the bottom of the gantry 210 to restrict the gantry 210 from descending. The combination of the limiting mechanism 400 and the lifting switch 121 effectively ensures the safety of maintenance personnel when repairing the hydraulic mechanism 300, improving the convenience and safety of maintenance of the high-level picking vehicle.

[0063] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0064] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0065] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A maintenance-friendly high-level picking vehicle, comprising a frame mechanism, a mast mechanism, and a hydraulic mechanism, wherein the frame mechanism includes a frame and a compartment disposed at the rear end of the frame, the mast mechanism includes a mast liftably mounted on the frame and forks liftably mounted on the mast, the mast being located at the front end of the frame, and the hydraulic mechanism being located between the compartment and the mast, for providing power for the lifting movement of the mast and the forks, characterized in that... Also includes: The limiting mechanism includes a fixed seat, a limiting shaft, and a limiting baffle located on one side of the gantry. The limiting shaft is movably disposed on the fixed seat and is provided with a first limiting groove and a second limiting groove arranged at intervals. The limiting baffle is movably disposed on the fixed seat and configured to selectively engage with the first limiting groove or the second limiting groove. The limiting shaft has a first position and a second position. When the limiting baffle is engaged in the first limiting groove, the first end of the limiting shaft retracts into the fixed seat, and the limiting shaft is in the first position; When the limiting baffle is engaged in the second limiting groove, the first end of the limiting shaft extends outside the fixed base, and the limiting shaft is in the second position; The cabin is equipped with a lifting switch for controlling the raising or lowering of the gantry; The operator can control the gantry to rise to a first preset height via the lifting switch to expose the hydraulic mechanism, and the limiting shaft can be switched to a second position, with the first end of the limiting shaft abutting against the bottom of the gantry to restrict the gantry from descending.

2. The easy-to-maintain high-level picking cart according to claim 1, characterized in that, The mast includes an outer mast fixed to the vehicle frame, a middle mast that can be lifted and lowered inside the outer mast, and an inner mast that can be lifted and lowered inside the middle mast. A through area is provided between the two sides of the outer gantry, and the hydraulic mechanism is located directly behind the through area.

3. The easy-to-maintain high-level picking cart according to claim 2, characterized in that, The fixing seat is fixed on one side of the outer gantry. When the limiting shaft is in the second position, the first end of the limiting shaft is located directly below the middle gantry. The second end of the limiting shaft is provided with a limiting retaining ring, which can abut against the side of the fixed seat away from the middle gantry.

4. The easy-to-maintain high-level picking cart according to claim 3, characterized in that, The limiting baffle is arranged vertically on the fixed base. The limiting baffle includes a snap-fit ​​end that can be snapped into the first limiting groove or the second limiting groove and an installation end away from the snap-fit ​​end. The installation end is connected to the fixed base through an installation shaft. The mounting end is provided with an adjustment groove arranged in the vertical direction, and the mounting shaft is movably inserted into the adjustment groove.

5. The easy-to-maintain high-level picking cart according to claim 4, characterized in that, The limiting mechanism also includes a locking handle, which is connected to the end of the mounting shaft away from the fixed seat and is used to clamp or release the limiting baffle.

6. The easy-to-maintain high-level picking cart according to claim 1, characterized in that, The top of the cabin is equipped with a control compartment, which contains multiple control units. The lifting switch is located inside the control compartment, and the opening at the top of the control compartment is equipped with a rotatable flip cover.

7. The easy-to-maintain high-level picking cart according to claim 6, characterized in that, The flip cover has a first mounting plate and a second mounting plate at both ends. The control compartment has a first mounting seat and a second mounting seat at both ends. The first mounting plate is rotatably connected to the first mounting seat via a pin, and the second mounting plate is rotatably connected to the second mounting seat via a pin.

8. A high-level picking cart that is easy to maintain according to claim 7, characterized in that, One end of the first mounting plate is connected to the first mounting base via the pin, and the other end of the first mounting plate is provided with a support rod. The first mounting base is provided with a positioning groove. When the flip cover is opened, one end of the support rod can extend into the positioning groove to support the flip cover.

9. A high-level picking cart that is easy to maintain according to claim 8, characterized in that, It also includes a drive mechanism, which includes a drive wheel assembly located at the bottom of the frame. A limit switch is provided on the second mounting base. The limit switch is electrically connected to the drive wheel assembly and can control the speed of the drive wheel assembly. When the flip cover is opened, the limit switch can control the drive wheel assembly to travel at a speed of less than 5 km / h.

10. A high-level picking cart that is easy to maintain according to claim 6, characterized in that, One of the control units is configured as a descent valve, which is connected to the hydraulic mechanism and used to control the descent of the gantry. The control compartment is also provided with a placement seat, on which are provided a plurality of Allen wrenches, which are configured to operate the descent valve.

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