Transporter

Abstract

The present invention provides a transport vehicle, comprising a housing, a first telescopic assembly and a second telescopic assembly, wherein the housing is provided with a first guide rail and a second guide rail; the first telescopic assembly comprises a first driving member, a slide plate, a lifting mechanism and a first fork, wherein the slide plate is slidably mounted on the first guide rail, the first driving member is connected to the slide plate to drive the slide plate to move along the first guide rail; the lifting mechanism is mounted on the slide plate so that the lifting mechanism can move together with the slide plate, and the first fork is connected to the lifting mechanism to move in a vertical direction under the drive of the lifting mechanism; the second telescopic assembly comprises a second driving member and a second fork connected to the second driving member, wherein the second fork is slidably mounted on the second guide rail so that the second fork can move in the direction of the second guide rail under the drive of the second driving member. The transport vehicle has the advantages of small space occupation and high transportation efficiency.

Description

Technical Field

[0001] The present invention relates to the field of transport vehicles, and in particular to a transport vehicle. Background Art

[0002] In intensive warehousing and logistics, the forks of existing transport trucks are fixed and occupy a large space. When transporting goods over long distances, it not only affects the space of intensive warehousing, but also makes it difficult to change the direction of transportation, and the cost is relatively high. In addition, manual operation of forklifts, picking up pallets on the ground and docking with conveyor lines, takes up a large number of operating channels to meet the space requirements of manual operation and forklifts when picking up pallets. With the development of society, the difficulty of employment has increased, and the cost has also continued to increase.

[0003] In addition, in intensive warehousing, pallets are densely placed, but whether it is a manual forklift or an automatic transport trolley, the number of pallets transported each time is only one, which is inefficient and cannot meet the growing logistics needs. If the transportation efficiency is increased, the number of transport trolleys must be increased, which increases the operating cost and maintenance cost, and increases the difficulty of the dispatching system.

[0004] In view of this, it is necessary to provide a new transport vehicle to solve or at least alleviate the above-mentioned technical defects. Summary of the invention

[0005] The main purpose of the present invention is to provide a transport vehicle, aiming to solve the technical problems in the prior art that the transport vehicle occupies a large space, is difficult to operate and has low transportation efficiency.

[0006] To achieve the above object, the present invention provides a transport vehicle, comprising:

[0007] A housing, wherein a first guide rail and a second guide rail are provided on the housing;

[0008] a first telescopic assembly, the first telescopic assembly comprising a first driving member, a slide plate, a lifting mechanism and a first fork, the slide plate being slidably mounted on the first guide rail, the first driving member being connected to the slide plate to drive the slide plate to move along the first guide rail; the lifting mechanism being mounted on the slide plate so that the lifting mechanism can move together with the slide plate, and the first fork being connected to the lifting mechanism to move in a vertical direction under the drive of the lifting mechanism;

[0009] The second telescopic assembly includes a second driving member and a second fork connected to the second driving member, and the second fork is slidably mounted on the second guide rail so that the second fork can move along the direction of the second guide rail under the drive of the second driving member.

[0010] In one embodiment, the first driving member includes a first driving motor and a first screw rod transmission-connected to the first driving motor, a first nut is mounted on the first screw rod, and the slide plate is connected to the first nut so that the slide plate can move with the first nut; the second driving member includes a second driving motor and a second screw rod transmission-connected to the second driving motor, a second nut is mounted on the second screw rod, and the second fork is connected to the second nut to drive the second fork to move.

[0011] In one embodiment, the first driving member also includes a first conveying chain, which is respectively connected to the first screw rod and the first driving shaft of the first driving motor, and the first screw rod and the first driving motor are located on the same side of the first conveying chain; the second driving member also includes a second conveying chain, which is respectively connected to the second screw rod and the second driving shaft of the second driving motor, and the second screw rod and the second driving motor are located on the same side of the second conveying chain.

[0012] In one embodiment, the transport vehicle further includes a lifting mechanism, which includes a hydraulic cylinder and a bottom lifting plate connected to a hydraulic shaft of the hydraulic cylinder, the second fork is mounted on the bottom lifting plate, and the hydraulic cylinder can drive the bottom lifting plate to move in a vertical direction.

[0013] In one embodiment, the lifting mechanism further includes a guide bearing and a guide shaft penetrating the guide bearing, the guide shaft is mounted on the bottom lifting plate, and the guide shaft is vertically arranged.

[0014] In one embodiment, a photoelectric bracket is further provided on the housing, and a photoelectric detector is provided on the photoelectric bracket. The photoelectric detector is used to detect whether the rise or fall of the hydraulic cylinder reaches a preset position.

[0015] In one embodiment, the first fork is located above the second fork.

[0016] In one embodiment, the lifting mechanism is a multi-stage lifting mechanism.

[0017] In one embodiment, the transport vehicle further includes a support plate, and the first cargo fork includes two fork rods spaced apart from each other, and the two fork rods are disposed on both sides of the support plate.

[0018] In one embodiment, the transport vehicle also includes a power wheel assembly and a steering wheel assembly installed at the bottom of the shell, the power wheel assembly includes a first steering motor and a steering wheel connected to the first steering motor, and the steering wheel assembly includes a second steering motor, a steering gear set and a steering wheel connected in sequence.

[0019] In the above scheme of the present invention, the transport vehicle includes a shell, a first telescopic assembly and a second telescopic assembly, and the shell is provided with a first guide rail and a second guide rail; the first telescopic assembly includes a first driving member, a slide plate, a lifting mechanism and a first fork, the slide plate is slidably mounted on the first guide rail, the first driving member is connected to the slide plate to drive the slide plate to move along the first guide rail; the lifting mechanism is mounted on the slide plate so that the lifting mechanism can move with the slide plate, and the first fork is connected to the lifting mechanism to move in the vertical direction under the drive of the lifting mechanism; the second telescopic assembly includes a second driving member and a second fork connected to the second driving member, and the second fork is slidably mounted on the second guide rail so that the second fork can move in the direction of the second guide rail under the drive of the second driving member. In the above scheme, the first fork is mounted on the slide plate, the first driving member drives the slide plate to move along the first guide rail so that the first fork can move along the first guide rail, and the corresponding working state is the extension or retraction of the first fork; at the same time, the first fork is connected to the lifting mechanism so that the first fork can move in the vertical direction, corresponding to the rise and fall of the first fork. Specifically, after the first fork picks up the goods, the first fork can be driven to rise by the lifting mechanism, and then the first fork can be driven to retract to the top of the shell by the first driving member, so that the first fork does not take up extra space, is convenient for the movement of the transport vehicle, and can make the walking channel set in the warehouse smaller, increase the storage capacity of goods, and reduce the warehouse rental cost; it can also facilitate the second fork to pick up the goods without interference and obstruction. Similarly, the second fork can be driven by the second driving member to move along the direction of the second guide rail. When the second fork is not needed, the second driving member controls the second fork to retract into the shell without taking up space. When the goods need to be picked up, the second driving member drives the second fork to extend and pick up the goods. Another advantage of this design is that through the first fork and the second fork, the transport vehicle can pick up two pallets of goods at a time, which improves the transportation efficiency compared to the traditional forklift that can only carry one pallet at a time. The invention has the advantages of small space occupation and high transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of a three-dimensional structure of a transport vehicle according to an embodiment of the present invention;

[0022] Figure 2 Another three-dimensional structural schematic diagram of the transport vehicle according to an embodiment of the present invention (seen from the bottom);

[0023] Figure 3 This is a schematic diagram of the internal structure of a transport vehicle according to an embodiment of the present invention;

[0024] Figure 4 Another schematic diagram of the internal structure of the transport vehicle according to an embodiment of the present invention (seen from the bottom);

[0025] Figure 5 It is a partial three-dimensional structural schematic diagram of a transport vehicle according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the steering wheel assembly according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a first fork of a transport vehicle according to an embodiment of the present invention picking up a pallet;

[0028] Figure 8 It is a schematic diagram of a first fork of a transport vehicle according to an embodiment of the present invention transporting a pallet upward;

[0029] Fig. 9 It is a schematic diagram of a first fork of a transport vehicle according to an embodiment of the present invention transporting a pallet to above a housing;

[0030] Fig.10 A schematic diagram of a transport vehicle according to an embodiment of the present invention with a second fork extending out to pick up a pallet;

[0031] Fig.11 This is a schematic diagram of the second fork of the transport vehicle according to the embodiment of the present invention picking up a pallet (at this time, both the first fork and the second fork have picked up a pallet);

[0032] Fig.12 for Fig.11 Schematic diagram of another perspective (seen from the bottom).

[0033] Description of Figure Numbers:

[0034] 1. Inspection port; 2. First fork; 3. Obstacle avoidance radar; 4. Inspection camera; 5. Lifting mechanism; 6. Support plate; 7. Hydraulic cylinder; 8. Guide bearing; 9. Guide shaft; 10. First transmission chain; 11. First drive motor; 12. First steering motor; 16. Battery; 18. Root photoelectric; 19. Root photoelectric assembly; 20. Support wheel; 21. Second fork; 22. Bottom lifting plate; 23. Universal wheel; 24. Positioning radar; 25. In-position photoelectric; 26. Steering wheel; 27. Second shift drive motor; 28. Pallet; 29. ​​First guide rail; 30. Power steering gear; 31. Second steering motor; 32. Follow-up steering gear; 33. First screw rod; 34. Limit block; 35. Photoelectric bracket; 36. Inspection bracket; 37. Slide plate; 38. Second transmission chain; 39. Second screw rod; 40. Second guide rail.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0039] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] See also Figure 1-Figure 12 The present invention provides a transport vehicle, comprising:

[0041] A housing, on which a first guide rail 29 and a second guide rail 40 are provided;

[0042] The first telescopic assembly includes a first driving member, a slide plate 37, a lifting mechanism 5 and a first fork 2. The slide plate 37 is slidably mounted on the first guide rail 29. The first driving member is connected to the slide plate 37 to drive the slide plate 37 to move along the first guide rail 29. The lifting mechanism 5 is mounted on the slide plate 37 so that the lifting mechanism 5 can move together with the slide plate 37. The first fork 2 is connected to the lifting mechanism 5 to move in the vertical direction under the drive of the lifting mechanism 5.

[0043] The second telescopic assembly includes a second driving member and a second fork 21 connected to the second driving member. The second fork 21 is slidably mounted on the second guide rail 40 so that the second fork 21 can move along the direction of the second guide rail 40 under the drive of the second driving member.

[0044] In the above embodiment, the first fork 2 is mounted on the slide 37, and the first driving member drives the slide 37 to move along the first guide rail 29 so that the first fork 2 can move along the first guide rail 29, and the corresponding working state is the extension or retraction of the first fork 2; at the same time, the first fork 2 is connected to the lifting mechanism 5, so that the first fork 2 can move in the vertical direction, corresponding to the rise and fall of the first fork 2. Specifically, after the first fork 2 forks the goods, the lifting mechanism 5 can drive the first fork 2 to rise, and then the first driving member drives the first fork 2 to retract to the top of the shell, so that the first fork 2 does not take up extra space, which is convenient for the movement of the transport vehicle, and can make the walking channel set in the warehouse smaller, increase the storage capacity of goods, and reduce the warehouse rental cost; it can also facilitate the second fork 21 to fork the goods without interference and obstruction. Similarly, the second fork 21 can be moved in the direction of the second guide rail 40 under the drive of the second driving member. When the second fork 21 is not needed, the second driving member controls the second fork 21 to retract into the shell body and does not take up space. When it is necessary to fork the goods, the second driving member drives the second fork 21 to extend and fork the goods. Another advantage of this design is that through the first fork 2 and the second fork 21, the transport truck can fork two pallets 28 of goods at a time, which improves the transportation efficiency compared to the traditional forklift that can only transport one pallet 28 at a time. This embodiment has the advantages of small space occupation and high transportation efficiency. It should be noted here that, similar to the first fork 2, the second fork 21 can also be indirectly connected to the second guide rail 40 through a slider slidably mounted on the second guide rail 40.

[0045] In one embodiment, the first driving member includes a first driving motor 11 and a first screw rod 33 connected to the first driving motor 11, a first nut is mounted on the first screw rod 33, and a slide plate 37 is connected to the first nut so that the slide plate 37 can move with the first nut; the second driving member includes a second driving motor 27 and a second screw rod 39 connected to the second driving motor 27, a second nut is mounted on the second screw rod 39, and the second fork 21 is connected to the second nut to drive the second fork 21 to move. Specifically, the first driving motor 11 and the second driving connection can be a transmission motor, the first screw rod 33 and the second screw rod 39 remain stationary in the axial direction during the rotation process, and the first nut and the second nut move along the axis direction of the screw rod under the rotation of the first screw rod 33 and the second screw rod 39 respectively, so as to drive the slide plate 37 to move along the first guide rail 29 through the first nut, thereby driving the first fork 2 to move; and at the same time, the second fork 21 is driven to move through the second nut. It should be noted here that the second fork 21 can be directly connected to the second nut, or can be connected to the second nut through a connecting plate or a connecting block. In a specific embodiment, the first fork 2 and the second fork 21 are arranged in layers in the vertical direction, and the first fork 2 is located above the second fork 21 , which is conducive to realizing double-layer forking of the pallet 28 .

[0046] In one embodiment, the first driving member further includes a first transmission chain 10, which is respectively connected to the first screw rod 33 and the first drive shaft of the first drive motor 11, and the first screw rod 33 and the first drive motor 11 are located on the same side of the first transmission chain 10; the second driving member further includes a second transmission chain 38, which is respectively connected to the second screw rod 39 and the second drive shaft of the second drive motor 27, and the second screw rod 39 and the second drive motor 27 are located on the same side of the second transmission chain 38. Through the transmission effect of the first transmission chain 10 and the second transmission chain 38, it can be ensured that the drive motor does not directly contact the screw rod and is easily broken, and the space layout can be improved, and the first drive motor 11 and the second drive motor 27 are both arranged in the housing, reducing the length of the transport vehicle, and further reducing the occupied space of the transport vehicle. A limit block 34 can also be set at the front end of the housing to prevent the first fork 2 or the second fork 21 from moving beyond the limit.

[0047] In one embodiment, the transport vehicle further includes a lifting mechanism, which includes a hydraulic cylinder 7 and a bottom lifting plate 22 connected to the hydraulic shaft of the hydraulic cylinder 7. The second fork 21 is installed on the bottom lifting plate 22, and the hydraulic cylinder 7 can drive the bottom lifting plate 22 to move in the vertical direction. The second fork 21 is located at the bottom. When forking the pallet 28, in order to facilitate the insertion into the bottom of the pallet 28, the bottom lifting plate 22 can be driven downward by the hydraulic cylinder 7, and then the second fork 21 can be driven downward to facilitate the insertion into the bottom of the pallet 28; when the pallet 28 needs to be lifted, the bottom lifting plate 22 is driven upward by the hydraulic cylinder 7, and then the second fork 21 is driven upward to lift the pallet 28. In addition, when the second fork 21 is stored in the shell, it is also necessary to ensure that the second fork 21 is a certain distance away from the ground to prevent it from hitting the ground. This can also be achieved through the control of the hydraulic cylinder 7.

[0048] In one embodiment, the lifting mechanism further includes a guide bearing 8 and a guide shaft 9 penetrating the guide bearing 8, the guide shaft 9 is mounted on the bottom lifting plate 22, and the guide shaft 9 is vertically arranged. The guide bearing 8 and the guide shaft 9 mainly play a guiding role, ensuring that the movement direction of the second fork 21 is also vertical, to prevent tipping when transporting goods, or the second fork 21 is broken by oblique force during the transportation of goods.

[0049] In one embodiment, a photoelectric bracket 35 and a detection bracket 36 are further provided on the housing. A photoelectric detector is provided on the photoelectric bracket 35. The photoelectric detector is used to detect whether the rise or fall of the hydraulic cylinder 7 reaches a preset position. If the hydraulic cylinder 7 controls the bottom lifting plate 22 to move beyond the limit, the transport vehicle is easily damaged. Therefore, a photoelectric detector can be provided on the photoelectric bracket 35 to determine whether the movement of the hydraulic cylinder 7 exceeds the limit through the detection bracket 36.

[0050] In one embodiment, the lifting mechanism 5 is a multi-stage lifting mechanism 5. Specifically, the lifting mechanism 5 may include a multi-stage oil cylinder, such as a first-stage oil cylinder, a second-stage oil cylinder, a third-stage oil cylinder and a fourth-stage oil cylinder. By providing a lifting mechanism 5 with a multi-stage oil cylinder, the initial height is smaller than that of a traditional lifting mechanism 5, and the occupied space is smaller, which is convenient for transportation and turning in the warehouse, and is more efficient than a traditional handling robot.

[0051] In one embodiment, the transport vehicle further includes a support plate 6, and the first fork 2 includes two fork rods arranged at intervals, and the two fork rods are respectively arranged on both sides of the support plate 6. After the first fork 2 forks the pallet 28, the lifting mechanism 5 drives the first fork 2 to rise and then retracts to the top of the shell. At this time, the support plate 6 is arranged between the two fork rods to support the pallet 28, reduce the force on the first fork 2, and prevent the impact force caused by the bumps of the pallet 28 during transportation from causing possible damage to the first fork 2.

[0052] In one embodiment, the transport vehicle further comprises a power wheel assembly and a steering wheel assembly installed at the bottom of the housing, the power wheel assembly comprises a first steering motor 12 and a steering wheel 26 connected to the first steering motor 12, and the steering wheel assembly comprises a second steering motor 31, a steering gear set and a steering wheel connected in sequence. Specifically, the steering gear set comprises a power steering gear 30 and a follower steering gear 32 meshing with each other, and when the transport vehicle moves forward, the steering wheel 26 provides forward driving force. When the transport vehicle needs to move laterally, the second steering motor 31 provides power to drive the power steering gear 30 to rotate, so that the follower steering gear 32 rotates, so as to achieve the purpose of driving the support wheel 20 to turn. At the same time, the first steering motor 12 drives the steering wheel 26 to rotate, which is consistent with the rotation direction of the support wheel 20, so as to realize the lateral movement of the vehicle body and make the steering more flexible. Of course, a universal wheel 23 can also be set under the housing to facilitate steering. This embodiment provides a transport vehicle that can be transported in all directions, which is more flexible than a general transport vehicle, has higher transport efficiency and a wider available space than a traditional omnidirectional transport vehicle.

[0053] In one embodiment, the transport vehicle further includes a detection camera 4 arranged on the front of the housing, an obstacle avoidance radar 3 and a positioning radar 24 arranged at the bottom of the housing, a root photoelectric 18 can also be arranged on the housing, a root photoelectric assembly 19 can be arranged at the bottom of the front end of the first fork 2, and a positioning photoelectric 25 can also be arranged below the housing, which is equivalent to equipping the transport vehicle with eyes, and can realize automatic line recognition, automatic obstacle avoidance and automatic distance measurement, and realize full automation of the transport vehicle. Of course, a detection port 1 can also be set at the front end of the first fork 2 for inspection. A battery 16 can also be set inside the housing to provide power.

[0054] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A transport vehicle, It is characterized in that include: A housing, wherein a first guide rail and a second guide rail are provided on the housing; a first telescopic assembly, the first telescopic assembly comprising a first driving member, a slide plate, a lifting mechanism and a first fork, the slide plate being slidably mounted on the first guide rail, the first driving member being connected to the slide plate to drive the slide plate to move along the first guide rail; the lifting mechanism being mounted on the slide plate so that the lifting mechanism can move together with the slide plate, and the first fork being connected to the lifting mechanism to move in a vertical direction under the drive of the lifting mechanism; a second telescopic assembly, the second telescopic assembly comprising a second driving member and a second fork connected to the second driving member, the second fork being slidably mounted on the second guide rail so that the second fork can move along the direction of the second guide rail under the drive of the second driving member, and when the second fork is not needed, the second driving member controls the second fork to retract into the housing; A limit block is provided at the front end of the housing to prevent the first fork or the second fork from moving beyond the limit; The first driving member comprises a first driving motor and a first screw rod drivingly connected to the first driving motor, a first nut is sleeved on the first screw rod, and the slide plate is connected to the first nut so that the slide plate can move with the first nut; the second driving member comprises a second driving motor and a second screw rod drivingly connected to the second driving motor, a second nut is sleeved on the second screw rod, and the second fork is connected to the second nut to drive the second fork to move; The first driving member also includes a first conveying chain, which is respectively connected to the first screw rod and the first driving shaft of the first driving motor, and the first screw rod and the first driving motor are located on the same side of the first conveying chain; the second driving member also includes a second conveying chain, which is respectively connected to the second screw rod and the second driving shaft of the second driving motor, and the second screw rod and the second driving motor are located on the same side of the second conveying chain.

2. The transport vehicle according to claim 1, It is characterized in that The transport vehicle further comprises a lifting mechanism, which comprises a hydraulic cylinder and a bottom lifting plate connected to a hydraulic shaft of the hydraulic cylinder, the second fork is mounted on the bottom lifting plate, and the hydraulic cylinder can drive the bottom lifting plate to move in a vertical direction.

3. The transport vehicle according to claim 2, It is characterized in that The lifting mechanism further comprises a guide bearing and a guide shaft penetrating the guide bearing, wherein the guide shaft is mounted on the bottom lifting plate and is vertically arranged.

4. The transport vehicle according to claim 2, It is characterized in that The housing is also provided with a photoelectric support, and the photoelectric support is provided with a photoelectric detector, and the photoelectric detector is used to detect whether the rise or fall of the hydraulic cylinder reaches a preset position.

5. The transport vehicle according to any one of claims 1 to 4, It is characterized in that The first fork is located above the second fork.

6. The transport vehicle according to any one of claims 1 to 4, It is characterized in that The lifting mechanism is a multi-stage lifting mechanism.

7. The transport vehicle according to any one of claims 1 to 4, It is characterized in that The transport vehicle further comprises a support plate, and the first cargo fork comprises two fork rods which are arranged at intervals, and the two fork rods are respectively arranged on both sides of the support plate.

8. The transport vehicle according to any one of claims 1 to 4, It is characterized in that The transport vehicle also includes a power wheel assembly and a steering wheel assembly installed at the bottom of the shell, the power wheel assembly includes a first steering motor and a steering wheel connected to the first steering motor, and the steering wheel assembly includes a second steering motor, a steering gear set and a steering wheel connected in sequence.

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