High-position picking vehicle convenient to maintain

Abstract

The invention relates to the technical field of picking vehicles, and particularly discloses a high-position picking vehicle convenient to maintain, which comprises a vehicle frame mechanism, a door frame mechanism, a hydraulic mechanism and a limiting mechanism, the limiting mechanism comprises a fixed seat, a limiting shaft and a limiting baffle plate, and the limiting shaft is provided with a first limiting groove and a second limiting groove; the limiting baffle can be selectively clamped into different limiting grooves to enable the limiting shaft to be located at different positions, and when the limiting baffle is clamped into the first limiting groove, the limiting shaft is shrunk in the fixing base; when the limiting shaft is clamped into the second limiting groove, the limiting shaft is unfolded outside the fixing base, a lifting switch is arranged in the cabin body, an operator can control the portal frame to ascend to the preset height through the switch to enable the hydraulic mechanism to be exposed, high-position operation of the operator is avoided, the limiting shaft is switched to the second position, and the limiting shaft abuts against the bottom of the portal frame to limit descending of the portal frame. And through cooperation of the limiting mechanism and the lifting switch, the safety of maintenance personnel during maintenance of the hydraulic mechanism is effectively guaranteed, and the maintenance convenience and safety of the high-position picking vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-position order picking vehicles, in particular to a high-position order picking vehicle that is easy to maintain. Background Art

[0002] High-level order pickers are a type of handling equipment commonly used in warehousing and logistics, primarily for picking items from high-bay shelves. With the rapid development of the logistics industry, high-level order pickers are becoming increasingly popular, and their safety and ease of maintenance are gaining increasing attention.

[0003] However, there are still some urgent problems to be solved in the maintenance process of existing high-level order pickers:

[0004] First, when repairing the hydraulic mechanism, since the hydraulic mechanism is usually located between the mast and the cabin, the mast needs to be lifted to expose the hydraulic mechanism for maintenance. To prevent the mast from accidentally falling and injuring people during maintenance, it is usually necessary to use a crane to lift the mast or place wood between the mast and the ground to secure it. This operation is not only cumbersome but also requires additional auxiliary equipment. The operator also needs to stand on the mast operating platform and step on the pedals to control the mast's lifting and lowering, which increases the complexity of maintenance and safety risks.

[0005] Secondly, when maintaining the control unit in the control bin, the control bin cover of existing high-level sorting vehicles is usually fixed with 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 various tools with them. If they forget to bring them or the tools are inappropriate, it will affect maintenance efficiency.

[0006] In addition, existing high-level picking vehicles lack effective support mechanisms and safety control measures when the control bin cover is opened for maintenance, which can easily cause the cover to close accidentally or cause safety hazards such as the vehicle running at high speed during maintenance. Summary of the Invention

[0007] The present invention is made in consideration of the above-mentioned problems. The purpose of the invention is to provide a high-position picking vehicle that is easy to maintain. The limiting mechanism can solve the problem of the door frame easily falling, thereby 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, thereby improving the convenience of maintenance.

[0008] To achieve the above-mentioned object, the present invention provides a high-position order picking vehicle that is easy to maintain, comprising a frame mechanism, a gantry mechanism, and a hydraulic mechanism. The frame mechanism comprises a frame and a cabin provided at the rear end of the frame. The gantry mechanism comprises a gantry that can be raised and lowered on the frame and a fork that can be raised and lowered on the gantry. The gantry is located at the front end of the frame. The hydraulic mechanism is located between the cabin and the gantry and is used to provide power for the lifting and lowering movement of the gantry and the fork. The vehicle further comprises:

[0009] A limiting mechanism, comprising a fixed seat, a limiting shaft, and a limiting baffle located on one side of the door frame, wherein the limiting shaft is movably arranged on the fixed seat, and a first limiting groove and a second limiting groove arranged at intervals are provided on the limiting shaft, the limiting baffle is movably arranged on the fixed seat and configured to be selectively engaged with the first limiting groove or the second limiting groove, and the limiting shaft has a first position and a second position;

[0010] When the limiting baffle is inserted into the first limiting groove, the first end of the limiting shaft is retracted into the fixing seat, and the limiting shaft is in the first position;

[0011] When the limiting baffle is inserted into the second limiting groove, the first end of the limiting shaft is extended outside the fixing seat, and the limiting shaft is in the second position;

[0012] A lifting switch for controlling the raising or lowering of the gantry is provided in the cabin;

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

[0014] According to the above-mentioned high-position picking vehicle that is easy to maintain, the gantry includes an outer gantry fixed to the vehicle frame, a middle gantry that can be lifted and arranged inside the outer gantry, and an inner gantry that can be lifted and arranged inside the middle gantry;

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

[0016] According to the high-position order picking vehicle that is easy to maintain, the fixing seat is fixed to 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] A limiting retaining ring is provided on the second end of the limiting shaft, and the limiting retaining ring can abut against a side of the fixing seat away from the middle door frame.

[0018] According to the high-position picking vehicle that is easy to maintain as described above, the limit baffle is arranged on the fixed seat in the vertical direction, and the limit baffle includes a clamping end that can be clamped into the first limiting groove or the second limiting groove and a mounting end away from the clamping end, and the mounting end is connected to the fixed seat through a mounting shaft;

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

[0020] According to the above-mentioned high-position picking vehicle that is easy to maintain, the limiting mechanism also includes a tightening handle, which is connected to the end of the installation shaft away from the fixed seat and is used to clamp or release the limiting baffle.

[0021] According to the above-mentioned high-position picking vehicle that is easy to maintain, a control compartment is provided on the top of the cabin, a plurality of control units are provided in the control compartment, the lifting switch is arranged in the control compartment, and a rotatable flip cover is provided on the opening on the top of the control compartment.

[0022] According to the above-mentioned high-position 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 symmetrical ends in the control compartment. The first mounting plate is rotatably connected to the first mounting seat through a pin shaft, and the second mounting plate is rotatably connected to the second mounting seat through a pin shaft.

[0023] According to the above-mentioned high-position picking vehicle that is easy to maintain, one end of the first mounting plate is connected to the first mounting seat through the pin shaft, and a support rod is provided on the other end of the first mounting plate. A positioning groove is provided on the first mounting seat. When the flip cover is opened, one end of the support rod can be extended into the positioning groove to support the flip cover.

[0024] The high-position picking vehicle that is easy to maintain as described above also includes a driving mechanism, which includes a driving wheel group located at the bottom of the frame, and a limit switch is provided on the second mounting seat. The limit switch is connected to the driving wheel group by electrical signals and can control the speed of the driving wheel group. When the flip cover is opened, the limit switch can control the driving wheel group to travel at a speed of less than 5 km / h.

[0025] According to the above-mentioned high-position picking vehicle that is easy to maintain, one of the control units is configured as a descending valve, which is connected to the hydraulic mechanism and is used to control the descent of the gantry. A placement seat is also provided in the control compartment, and a plurality of hexagonal wrenches are provided on the placement seat, and the hexagonal wrenches are configured to operate the descending valve.

[0026] The present invention has the following beneficial effects:

[0027] 1. By setting a limit mechanism, when the mast rises to the preset height, the mast can be mechanically locked by extending the limit shaft, avoiding the need to prepare other lifting equipment or components such as pads, simplifying the maintenance operation process and improving maintenance efficiency;

[0028] 2. By setting a lifting switch in the cabin to control the mast to rise or fall, the operator is prevented from standing on the mast to operate, thus improving safety performance;

[0029] 3. The top of the control compartment adopts a flip-up 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 cover is opened, the travel switch can be triggered, realizing the safety control of the vehicle's automatic low-speed driving, effectively preventing safety accidents caused by high-speed driving during maintenance;

[0031] 5. A hexagonal wrench holder is set in the control compartment to solve the problem of needing to bring your own tools during maintenance, further improving the convenience of maintenance and reducing maintenance preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0033] Figure 2 1 is a schematic diagram of the overall back structure of the embodiment;

[0034] Figure 3 2. It is a schematic structural diagram of the limiting mechanism of the embodiment;

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

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

[0037] Figure 6 2 is a schematic diagram of the assembly of the placement seat in the control compartment of the embodiment.

[0038] In the picture:

[0039] 100, frame mechanism; 110, frame; 120, cabin; 121, lift switch; 122, control compartment; 122a, lowering valve; 122b, first mounting seat; 122c, second mounting seat; 122d, positioning slot; 122e, travel switch; 122f, placement seat; 122g, hexagonal 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, fork;

[0041] 300, hydraulic mechanism;

[0042] 400, limiting mechanism; 410, fixing 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, driving mechanism; 510, driving wheel assembly. DETAILED DESCRIPTION

[0043] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

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

[0045] Among them, the frame mechanism 100 includes a frame 110 and a cabin 120 arranged at the rear end of the frame 110. The frame 110 is the main support structure of the high-position picking vehicle. It is made of steel and has sufficient strength and rigidity to support the weight of the entire high-position picking vehicle. The cabin 120 is arranged at the rear end of the frame 110 and is used to accommodate the control system, electrical system and part of the hydraulic mechanism 300. The driving mechanism 500 includes a driving wheel group 510 located at the bottom of the frame 110, which can be used to drive the entire body to move. The gantry mechanism 200 includes a gantry 210 that can be raised and lowered on the frame 110 and a fork 220 that can be raised and lowered on the gantry 210. Of course, in this embodiment, the gantry mechanism 200 also includes an operating platform that can be raised and lowered on the gantry 210. The operator can stand on the operating platform to operate the picking vehicle. For control, the hydraulic mechanism 300 is located between the cabin 120 and the gantry 210, and is used to provide power for the lifting and lowering movements of the gantry 210 and the fork 220. In this embodiment, a lifting switch 121 is provided in the cabin 120, and the lifting switch 121 is electrically connected to the hydraulic mechanism 300. The lifting and lowering of the gantry 210 can be controlled through the hydraulic mechanism 300 to control the gantry 210 to rise or fall. Under normal use, the operator can control the gantry 210 to rise or fall by pedals on the operating table. However, in the maintenance state, if the pedals on the operating table are still used for lifting control, an operator must rise with the gantry 210, which increases the overall weight of the gantry 210 and increases the safety risk. Therefore, adding a lifting switch 121 can facilitate the lifting and lowering operations of the gantry 210 during maintenance and reduce safety risks.

[0046] Specifically, the limiting mechanism 400 includes a fixed seat 410 located on one side of the door frame 210, a limiting shaft 420 and a limiting baffle 430. The limiting shaft 420 is movably arranged on the fixed seat 410, that is, the limiting shaft 420 can be displaced on the fixed seat 410, and a first limiting groove 421 and a second limiting groove 422 arranged at intervals are provided on the limiting shaft 420, and the limiting baffle 430 is movably arranged on the fixed seat 410 and is configured to be selectively snapped into the first limiting groove. The first limiting groove 421 or the second limiting groove 422, when the limiting baffle 430 is inserted into the first limiting groove 421 or the second limiting groove 422, can position the limiting shaft 420 and limit its continued displacement. However, the different limiting grooves in which it is inserted result in different positions of the limiting shaft 420. Therefore, the limiting shaft 420 has at least a first position and a second position, that is, when the limiting baffle 430 is inserted into the first limiting groove 421, the first end of the limiting shaft 420 is retracted to the fixing seat 410. When the limit baffle 430 is stuck in the second limit groove 422, the first end of the limit shaft 420 is extended outside the fixing seat 410, and the limit shaft 420 is in the second position. When maintenance is needed, the operator can control the door frame 210 to rise to a first preset height through the lifting switch 121. The first preset height is higher than the height of the limit shaft 420, so that the hydraulic mechanism 300 can be exposed, and the limit shaft 420 is switched to the second position at the same time. At this time, the first end of the limit shaft 420 is located directly below the door frame 210, and the first end of the limit shaft 420 can abut against the bottom of the door frame 210 to achieve mechanical locking of the door frame 210 and limit the door frame 210 from descending. At this time, maintenance personnel can inspect the hydraulic mechanism 300 through the area below the door frame 210. Due to the existence of the limit shaft 420, even if the hydraulic system fails, the door frame 210 will not drop accidentally, thereby ensuring the safety of maintenance personnel.

[0047] The working principle of the high-level order picker is as follows:

[0048] In normal working state, the limiting baffle 430 is engaged with the first limiting groove 421, the limiting shaft 420 is in the first position, and its first end is retracted in the fixing seat 410, which does not interfere with the normal lifting movement of the mast 210. The operator can control the lifting and lowering of the mast 210 and the fork 220 through the lifting switch 121 to realize the picking and transportation of goods.

[0049] When the hydraulic mechanism 300 needs to be maintained, the operator can control the mast 210 to rise to a first preset height through the lifting switch 121 to expose the hydraulic mechanism 300. Then, the operator can remove the limit baffle 430 from the first limit groove 421 and insert it into the second limit groove 422, so that the limit shaft 420 is switched to the second position, with its first end extended outside the fixing seat 410 and located directly below the middle mast 212210. In this way, even if the hydraulic system fails, the mast 210 will not drop accidentally, ensuring the safety of the maintenance personnel;

[0050] After the maintenance is completed, the operator can remove the limiting baffle 430 from the second limiting groove 422 and insert it into the first limiting groove 421 to switch the limiting shaft 420 back to the first position and resume normal working state.

[0051] In this embodiment, the hydraulic mechanism 300 includes hydraulic components such as a lifting cylinder, an oil pipe, and a hydraulic valve.

[0052] Furthermore, the gantry 210 includes an outer gantry 211, a middle gantry 212, and an inner gantry 213. The outer gantry 211 is fixed to the front end of the vehicle frame 110, and the middle gantry 212 is liftably arranged on the inner side of the outer gantry 211, and can be connected to the outer gantry 211 through rollers and guide rails to ensure the stability of its lifting movement. The inner gantry 213 is liftably arranged on the inner side of the middle gantry 212, and can also be connected to the middle gantry 212 through rollers and guide rails. The fork 220 is liftably arranged on the inner gantry 213 for carrying and transporting goods.

[0053] Among them, a through area is provided between the two sides of the outer mast 211, which forms an open space 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 mast 212 rises to a certain height, which is convenient for maintenance and inspection.

[0054] Furthermore, the fixed seat 410 is fixed on one side of the outer door frame 211. When the limit shaft 420 is in the second position, the first end of the limit shaft 420 is located directly below the middle door frame 212, which can support the middle door frame 212 and then lock the middle door frame 212. A limit ring 423 is provided on the second end of the limit shaft 420. The limit ring 423 can abut against the side of the fixed seat 410 away from the middle door frame 212 to prevent the limit shaft 420 from completely separating from the fixed seat 410. The limit ring 423 is made of elastic material to reduce impact and noise.

[0055] Furthermore, the limit baffle 430 is arranged on the fixing base 410 along the vertical direction and includes a clamping end and a mounting end. The clamping end can be clamped 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 fixing base 410 via the mounting shaft. The mounting end is provided with an adjustment groove 431 arranged along the vertical direction. The mounting shaft is movably inserted into the adjustment groove 431. This design allows the limit baffle 430 to be adjusted in the vertical direction, thereby achieving its clamping or disengagement with the first limiting groove 421 or the second limiting groove 422. Only after the clamping end is disengaged from the first limiting groove 421 and the second limiting groove 422 can the limit shaft 420 be displaced to adjust its position.

[0056] Furthermore, the limiting mechanism 400 also includes a tightening handle 440, which is connected to the end of the installation shaft away from the fixed seat 410 and is used to clamp or release the limiting baffle 430. When the position of the limiting baffle 430 needs to be adjusted, the tightening handle 440 can be loosened, and the position of the limiting baffle 430 can be adjusted and then the tightening handle 440 can be tightened to fix the position of the limiting baffle 430, thereby 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, and a plurality of control units are provided in the control compartment 122, including electrical controllers, relays, contactors, fuses, hydraulic valves, etc. A lifting switch 121 is provided in the control compartment 122 for controlling the rise and fall of the gantry 210. This control unit and the lifting switch 121 do not need to be operated under normal use. The control compartment 122 will only be opened when the corresponding components fail or special operation is required. A rotatable flip cover 123 is provided on the opening at the top of the control compartment 122, and a handle is provided on the flip cover 123. The flip cover 123 can be flipped by pulling the handle to realize quick opening or closing, which is convenient for the operator to perform maintenance.

[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 symmetrical ends in the control chamber 122. The first mounting plate 123a is rotatably connected to the first mounting seat 122b through a pin shaft, and the second mounting plate 123b is rotatably connected to the second mounting seat 122c through a pin shaft, so that the flip cover 123 can rotate around the pin shaft to realize the opening and closing functions.

[0059] Furthermore, one end of the first mounting plate 123a is connected to the first mounting seat 122b through a pin shaft, and a support rod 123c is provided on the other end of the first mounting plate 123a, and a positioning groove 122d is provided on the first mounting seat 122b. 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 accordingly and extend into the positioning groove 122d, thereby achieving mechanical support for the flip cover 123 to prevent it from falling. At the same time, when operating or repairing the electronic control unit in the control compartment 122, there is no need to support the flip cover 123 by hand.

[0060] Furthermore, a limit switch 122e is provided on the second mounting seat 122c. The limit switch 122e is electrically connected to the driving wheel group 510 and can control the speed of the driving wheel group 510. When the flap 123 is opened, the limit switch 122e can control the driving wheel group 510 to travel at a speed less than 5 km / h. When the flap 123 is opened, it will trigger the limit switch 122e to limit the speed of the driving wheel group 510, thereby limiting the speed of the picking vehicle as a whole, and preventing safety accidents caused by high-speed driving in a maintenance state.

[0061] Furthermore, one of the control units is set as a descending valve 122a, which is connected to the hydraulic mechanism 300 and is used to control the descent of the gantry 210. A placement seat 122f is also provided in the control chamber 122, and a plurality of hexagonal wrenches 122g are provided on the placement seat 122f. The hexagonal wrenches 122g are configured to operate the descending valve 122a. In an emergency, the operator can manually operate the descending valve 122a to control the descent of the gantry 210, thereby improving the safety and reliability of the equipment. Moreover, since the tool placement seat 122f can be directly set in the control chamber 122, repeated taking of operating tools can be avoided, and maintenance is convenient. Therefore, the plurality of hexagonal wrenches 122g are set as wrenches of multiple different diameters, which can be suitable for workpieces of different sizes.

[0062] The present embodiment discloses a high-position picking vehicle that is easy to maintain, including a frame mechanism 100, a gantry mechanism 200, a hydraulic mechanism 300 and a limiting mechanism 400. The limiting mechanism 400 includes a fixed seat 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 be selectively inserted into different limiting grooves to place the limiting shaft 420 in different positions. When the limiting baffle 430 is inserted into the first limiting groove 421, the limiting shaft 420 is retracted into the fixed seat 410; when it is inserted into the second limiting groove 42 2, the limit shaft 420 is unfolded outside the fixed seat 410, and a lifting switch 121 is provided in the cabin 120. The operator can use the switch to control the gantry 210 to rise to a preset height to expose the hydraulic mechanism 300, thereby preventing the operator from standing on the gantry 210 for lifting operations, and switch the limit shaft 420 to the second position so that it abuts against the bottom of the gantry 210 to limit the downward movement of the gantry 210. The cooperation between the limit mechanism 400 and the lifting switch 121 effectively ensures the safety of maintenance personnel when repairing the hydraulic mechanism 300, thereby improving the maintenance convenience and safety of the high-position picking vehicle.

[0063] The technical solutions of the present invention have been described in detail above with reference to the accompanying drawings, and the embodiments described are intended to facilitate understanding of the concepts of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0064] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0065] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A high-position picking vehicle that is easy to maintain, comprising a frame mechanism, a gantry mechanism and a hydraulic mechanism, wherein the frame mechanism comprises a frame and a cabin provided at the rear end of the frame, the gantry mechanism comprises a gantry that can be raised and lowered on the frame and a fork that can be raised and lowered on the gantry, the gantry being located at the front end of the frame, and the hydraulic mechanism being located between the cabin and the gantry and used to provide power for the lifting and lowering movement of the gantry and the fork, characterized in that: Also includes: A limiting mechanism, comprising a fixed seat, a limiting shaft, and a limiting baffle located on one side of the door frame, wherein the limiting shaft is movably arranged on the fixed seat, and a first limiting groove and a second limiting groove arranged at intervals are provided on the limiting shaft, the limiting baffle is movably arranged on the fixed seat and configured to be selectively engaged with the first limiting groove or the second limiting groove, and the limiting shaft has a first position and a second position; When the limiting baffle is inserted into the first limiting groove, the first end of the limiting shaft is retracted into the fixing seat, and the limiting shaft is in the first position; When the limiting baffle is inserted into the second limiting groove, the first end of the limiting shaft is extended outside the fixing seat, and the limiting shaft is in the second position; A lifting switch for controlling the raising or lowering of the gantry is provided in the cabin; The operator can control the mast to rise to a first preset height through the lifting switch to expose the hydraulic mechanism, and the limit shaft can be switched to a second position, and the first end of the limit shaft can abut against the bottom of the mast to limit the mast from descending.

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

3. The high-position sorting vehicle that is easy to maintain according to claim 2 is characterized in that: The fixing seat is fixed on one side of the outer mast, and when the limiting shaft is located at the second position, the first end of the limiting shaft is located directly below the middle mast; A limiting retaining ring is provided on the second end of the limiting shaft, and the limiting retaining ring can abut against a side of the fixing seat away from the middle door frame.

4. The high-position sorting vehicle that is easy to maintain according to claim 3 is characterized in that: The limit baffle is arranged on the fixing seat in a vertical direction, and includes a clamping end that can be clamped into the first limiting groove or the second limiting groove and a mounting end away from the clamping end, and the mounting end is connected to the fixing seat through a mounting shaft; The mounting end is provided with an adjustment slot arranged along the vertical direction, and the mounting shaft is movably arranged in the adjustment slot.

5. The high-position sorting vehicle that is easy to maintain according to claim 4 is characterized in that: The limiting mechanism further includes a tightening handle, which is connected to an end of the installation shaft away from the fixing seat and is used to clamp or release the limiting baffle.

6. The high-position sorting vehicle that is easy to maintain according to claim 1, characterized in that: A control compartment is provided on the top of the cabin body. A plurality of control units are provided in the control compartment. The lifting switch is arranged in the control compartment. A rotatable flip cover is provided on the opening on the top of the control compartment.

7. The high-position sorting vehicle that is easy to maintain according to claim 6, characterized in that: 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 symmetrical ends in the control compartment. The first mounting plate is rotatably connected to the first mounting seat through a pin shaft, and the second mounting plate is rotatably connected to the second mounting seat through a pin shaft.

8. The high-position sorting vehicle 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 seat through the pin shaft, and a support rod is provided on the other end of the first mounting plate. A positioning groove is provided on the first mounting seat. When the flip cover is opened, one end of the support rod can extend into the positioning groove to support the flip cover.

9. The high-position sorting vehicle that is easy to maintain according to claim 8, characterized in that: It also includes a driving mechanism, which includes a driving wheel group located at the bottom of the frame. A travel switch is provided on the second mounting seat. The travel switch is connected to the driving wheel group by electrical signals and can control the speed of the driving wheel group. When the flip cover is opened, the travel switch can control the driving wheel group to travel at a speed of less than 5 km / h.

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

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