A lift truck hoist

Abstract

The application discloses a kind of stacker hoisting equipment, and technical solution points are including portal, the portal is connected with vehicle body;Lifting appliance, the lifting appliance is set on portal;And swing mechanism, the swing mechanism is connected in portal with lifting appliance, the swing mechanism drives lifting appliance to swing left and right;Through the setting of swing mechanism, when because the positioning accuracy of vehicle body is not high and makes between lifting appliance and container exist angle of inclusion, swing through swing mechanism drives lifting appliance, to adjust the angle of lifting appliance, so that lifting appliance and container are parallel, to reduce the requirement of vehicle body automatic driving precision, reduce cost.

Description

Technical Field

[0001] This invention relates to the field of container stacking technology, and more specifically, to a forklift hoisting device. Background Technology

[0002] Container stackers are key equipment for transshipping containers and are currently widely used in ports, railway and highway border crossings, container yards, and other locations to transport, stack, and destacking containers. Most existing container stackers consist of a vehicle body, a gantry mounted on the front of the vehicle body, and spreaders mounted on the gantry. The spreaders move up and down on the gantry and can secure the container. The vertical movement of the spreaders on the gantry allows the container to move up and down, and the movement of the vehicle body propels the container for transport.

[0003] When clamping containers, strict requirements are placed on the vehicle's posture when it approaches the container in order to ensure that the spreader can clamp the container accurately. With the development of unmanned and automated forklifts, automated forklifts require higher requirements for the vehicle's automatic driving and positioning in order to ensure that the spreader can clamp the container smoothly. This undoubtedly increases the cost of automated forklifts. This invention proposes a lifting device that can still achieve accurate clamping of containers by the spreader even when the vehicle's positioning accuracy is poor. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a forklift lifting device that, through the setting of a swing mechanism, when there is an angle between the spreader and the container due to low vehicle positioning accuracy, drives the spreader to swing, thereby adjusting the angle of the spreader and making the spreader parallel to the container. This reduces the requirements for the accuracy of automated vehicle driving and lowers costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a forklift hoisting device, including a gantry frame, wherein the gantry frame is connected to the vehicle body;

[0006] A lifting device, which is mounted on the gantry;

[0007] And a swing mechanism, which connects the spreader to the gantry and drives the spreader to swing left and right.

[0008] The present invention is further configured such that: the swing mechanism includes a main frame, and the main frame is connected to the gantry;

[0009] A rotating frame, which is rotatably connected to the gantry and to the lifting device;

[0010] And a power assembly for driving the rotating frame to rotate on the main frame.

[0011] The present invention is further configured such that: a support slider is provided on the main frame, and a bearing surface is provided on the rotating frame, the bearing surface is supported on the support slider and the bearing surface and the support slider can slide relative to each other.

[0012] The present invention is further configured such that: the power assembly includes two swing cylinders, which are respectively located on both sides of the rotation axis of the rotating frame; the cylinder body of the swing cylinder is rotatably connected to the main frame, and the piston rod is rotatably connected to the rotating frame.

[0013] The present invention is further configured such that the two swing cylinders are respectively configured as a left swing cylinder and a right swing cylinder;

[0014] The swing mechanism also includes a proportional directional valve. The rod chamber of the left swing cylinder is connected to the rodless chamber of the right swing cylinder, and the two are combined into a single pipeline and then connected to the proportional directional valve.

[0015] The rod chamber of the right swing cylinder is connected to the rodless chamber of the left swing cylinder, and after being combined into a single pipeline, it is connected to the proportional directional valve.

[0016] The present invention is further configured such that: the gantry includes an outer gantry, the outer gantry is hinged to the vehicle body, and the vehicle body is provided with a tilting hydraulic cylinder that drives the outer gantry to rotate on the vehicle body;

[0017] The outer mast is equipped with an inner mast that slides up and down on the outer mast. The outer mast is equipped with a lifting cylinder that drives the inner mast to slide up and down. The main frame is mounted on the inner mast and can slide up and down on the inner mast.

[0018] The present invention is further configured such that: the lifting device includes a main crossbeam, and the main crossbeam is connected to the rotating frame;

[0019] And telescopic beams, two of which are provided, each inserted into the main crossbeam from both ends. The portions of the two telescopic beams extending out of the main crossbeam are provided with twist locking mechanisms, which can be inserted into the lock holes of the container to complete the locking.

[0020] The present invention is further configured such that: two extension cylinders are connected to the main crossbeam, and the two extension cylinders are respectively used to push the two telescopic beams to slide.

[0021] The invention is further configured such that: a top extension cylinder is provided on the portion of the telescopic beam that extends out of the main crossbeam, the top extension cylinder is located below the torsion lock mechanism, and the top extension cylinder is used to press against the lower crossbeam of the container to keep the container level.

[0022] The present invention is further configured such that: the rotating frame includes an embedding part, and the main frame is provided with a fitting groove corresponding to the embedding part, the embedding part is embedded into the fitting groove, and the top and bottom of the embedding part are respectively attached to the top and bottom of the fitting groove.

[0023] In summary, the present invention has the following advantages over the prior art: By setting up a swing mechanism, when there is an angle between the spreader and the container due to low vehicle positioning accuracy, the swing mechanism drives the spreader to swing, thereby adjusting the angle of the spreader and making the spreader parallel to the container, thus reducing the requirements for the accuracy of automated driving of the vehicle and reducing costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating its use in an embodiment.

[0025] Figure 2 This is a schematic diagram illustrating the swing mechanism in an embodiment;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of part A;

[0027] Figure 4 for Figure 2 Enlarged schematic diagram of part B;

[0028] Figure 5 A schematic diagram showing how the rotating frame drives the lifting device to swing left and right;

[0029] Figure 6 This is a schematic diagram illustrating the rotating frame and the main frame in an embodiment;

[0030] Figure 7 This is a schematic diagram illustrating the upper and lower swing axes in an embodiment;

[0031] Figure 8 This is a schematic diagram illustrating the support slider in an embodiment;

[0032] Figure 9 for Figure 7 Enlarged schematic diagram of part C;

[0033] Figure 10 This is a schematic diagram illustrating the connection between the swing cylinder and the proportional directional valve in an embodiment.

[0034] In the diagram: 1. Gantry; 11. Outer gantry; 12. Inner gantry; 121. Inner top plate; 2. Swinging mechanism; 21. Main frame; 211. Fitting groove; 212. Upper swing shaft; 213. Lower bushing; 214. Support slider; 22. Rotating frame; 221. Embedded part; 222. Upper bushing; 223. Lower swing shaft; 224. Bearing surface; 231. Left swing cylinder; 232. Right swing cylinder; 24. Proportional directional valve; 3. Lifting device; 31. Main crossbeam; 32. Telescopic beam; 321. Top extension cylinder. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0036] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0037] Example: A forklift hoisting device, see attached document. Figure 1 -Appendix Figure 10 It includes a gantry 1 connected to the vehicle body, a lifting device 3 mounted on the gantry 1, and a swing mechanism 2 for connecting the lifting device 3 to the gantry 1. The swing mechanism 2 drives the lifting device 3 to swing left and right.

[0038] Since the swing mechanism can drive the spreader 3 to swing left and right, when there is an angle between the spreader 3 and the container due to the low positioning accuracy of the vehicle body, the swing mechanism 2 drives the spreader 3 to swing, thereby adjusting the angle of the spreader 3 so that the spreader 3 is parallel to the container, thereby reducing the requirements for the accuracy of the vehicle body's automated driving and reducing costs.

[0039] Specifically, the swing mechanism includes a main frame 21 connected to the gantry 1, a rotating frame 22 rotatably connected to the main frame 21 and connected to the lifting device 3, and a power assembly for driving the rotating frame 22 to rotate on the main frame 21; such as Figure 5 This is a schematic diagram of the rotating frame 22 driving the spreader 3 to swing left and right. Based on the angular deviation between the spreader 3 and the container, the power component drives the spreader 3 to swing left and right so that the spreader 3 swings to be parallel to the container. This allows the vehicle body to successfully clamp the spreader 3 onto the container even when the positioning accuracy is low.

[0040] Specifically, the mast 1 includes an outer mast 11 and an inner mast 12. The outer mast 11 is connected to the vehicle body and has two tilting cylinders mounted on the vehicle body. The cylinder bodies of the two tilting cylinders are hinged to the vehicle body, and the piston rods are hinged to the outer mast 11. The rotation axis of the outer mast 11 is horizontal, and the length direction of the outer mast 11 is perpendicular to its own rotation axis. The inner mast 12 is located in the outer mast 11 and can slide on the outer mast 11 along its length direction. The main frame 21 in the swing mechanism is connected to the inner mast 12 and can slide on the inner mast 12. The length direction of the inner mast 12 is set along the length direction of the outer mast 11, and the sliding direction of the main frame 21 on the inner mast 12 is set along the length direction of the inner mast 12.

[0041] Specifically, a lifting cylinder is installed on the outer gantry 11, which drives the inner gantry 12 to slide on the outer gantry 11. A sprocket and a chain are installed at one end of the top of the inner gantry 12. One end of the chain is connected to the main frame 21, and the other end is wound around the sprocket. The sprocket winds and unwinds the chain, which drives the main frame 21 to slide on the inner gantry 12.

[0042] Specifically, the main beams on both sides of the outer gantry 11 are F-shaped main beams, and the two F-shaped main beams are connected by a C-shaped beam. Each of the two F-shaped beams has two short sides on the side closest to each other. Pulleys are installed on both sides of the inner gantry 12, with the two short sides of the F-shaped beams serving as their tracks. Specifically, the main beams on both sides of the inner gantry 12 are H-shaped main beams, and the two H-shaped main beams are connected by an H-shaped thickened web plate. An inner top plate 121 is welded to the top of the two H-shaped main beams, and a sprocket is installed in the inner top plate 121. Through the cooperation of the sprocket and the chain, the main frame 21 is driven to slide up and down.

[0043] Specifically, the cylinder bodies of the two tilting cylinders are hinged to the vehicle body, and the piston rods of the two tilting cylinders are respectively hinged to the two F-shaped main beams. The extension and retraction of the piston rods of the two tilting cylinders drives the outer mast 11 to rotate.

[0044] Specifically, the rotating frame 22 includes an insert 221, and a fitting groove 211 is provided on the main frame 21 corresponding to the insert 221. The insert 221 is inserted into the fitting groove 211, and the top and bottom of the insert 221 are respectively attached to the top and bottom of the fitting groove 211. Through the setting of the insert 221 and the fitting groove, the rotating frame 22 cannot be displaced along the rotation axis on the main frame 21.

[0045] Specifically, an upper swing shaft 212 is fixedly connected to the main frame 21. An upper bushing 222 is provided at the top of the embedded part 221 corresponding to the upper swing shaft 212. The upper swing shaft 212 is inserted into the upper bushing 222 and cooperates with the upper bushing 222. A lower swing shaft 223 is fixedly connected to the bottom of the embedded part 221. A lower bushing 213 is fixedly connected to the main frame 21 at the bottom of the fitting groove 211. The lower swing shaft 223 is inserted into the lower bushing 213 and cooperates with the lower bushing 213. The upper swing shaft 212, the lower swing shaft 223, the upper bushing 222, and the lower bushing 213 are coaxially arranged.

[0046] Specifically, the main frame 21 is equipped with a support slider 214, and the rotating frame 22 is equipped with a bearing surface 224. The bearing surface 224 is supported on the support slider 214, and the bearing surface 224 and the support slider 214 can slide relative to each other. By setting the support slider 214 and the bearing surface 224, the swing center and the load-bearing surface are separated, so that the main load is borne by the support slider 214, and the upper swing shaft 212 and the lower swing shaft 223 only need to balance the off-center load torque, which greatly reduces the structural strength requirements of the upper swing shaft 212 and the lower swing shaft 223.

[0047] Specifically, there are two support sliders 214, and correspondingly, there are two bearing surfaces 224. The two support sliders 214 are respectively set on both sides of the rotation axis of the rotating frame 22.

[0048] Specifically, the power assembly includes two swing cylinders, which are located on both sides of the rotation axis of the rotating frame 22. The cylinder body of the swing cylinder is rotatably connected to the main frame 21, and the piston rod is rotatably connected to the rotating frame 22.

[0049] The two swing cylinders are respectively configured as a left swing cylinder 231 and a right swing cylinder 232; the swing mechanism 2 also includes a proportional directional valve 24. The rod chamber of the left swing cylinder 231 is connected to the rodless chamber of the right swing cylinder 232, and after being combined into a pipeline, it is connected to the proportional directional valve 24; the rod chamber of the right swing cylinder 232 is connected to the rodless chamber of the left swing cylinder 231, and after being combined into a pipeline, it is connected to the proportional directional valve 24.

[0050] The spreader 3 includes a main crossbeam 31 and two telescopic beams 32. The main crossbeam 31 is connected to the rotating frame 22. The two telescopic beams 32 are inserted into the main crossbeam 31 from both ends. A twist-lock mechanism is provided on the portion of the two telescopic beams 32 extending beyond the main crossbeam 31. The twist-lock mechanism can be inserted into the lock hole of the container to lock it. Specifically, the two ends of the two telescopic beams 32 that are far apart from each other are configured as clamping parts, which are the portions of the telescopic beams 32 extending beyond the main crossbeam 31. The twist-lock mechanism is located at the top of the clamping part on the side away from the vehicle body. The twist-lock mechanism achieves connection with the container by inserting itself into the lock hole of the container to lock it.

[0051] Specifically, two extension cylinders are connected to the main crossbeam 31, and the two extension cylinders are used to push the two telescopic beams 32 to slide. By setting the two extension cylinders, the two telescopic beams 32 can be pushed to slide, thereby adjusting the distance between the two clamping parts, so that the spreader 3 can clamp different types of containers, thereby realizing the stacking of different containers.

[0052] Specifically, a top extension cylinder 321 is provided at the bottom of the clamping part on the side away from the vehicle body. The top extension cylinder 321 is located below the twist lock mechanism. When the twist lock mechanism is inserted into the lock hole of the container and locked, the piston rod of the top extension cylinder 321 can extend towards the container and press against the lower crossbeam of the container. Through the action of the piston rod of the top extension cylinder 321, the container can be kept horizontal when clamped by the spreader 3.

[0053] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A forklift hoisting device, characterized in that: Includes a gantry (1), which is connected to the vehicle body; Lifting device (3), said lifting device (3) is mounted on the gantry (1); And a swing mechanism (2), which connects the lifting device (3) to the gantry (1) and drives the lifting device (3) to swing left and right; The swing mechanism (2) includes a main frame (21), which is connected to the gantry (1); Rotating frame (22), which is rotatably connected to the gantry (1) and connected to the lifting device (3); and a power assembly for driving the rotating frame (22) to rotate on the main frame (21); The main frame (21) is provided with a support slider (214), and the rotating frame (22) is provided with a bearing surface (224). The bearing surface (224) is supported on the support slider (214), and the bearing surface (224) and the support slider (214) can slide relative to each other. The power assembly includes two swing cylinders, which are located on both sides of the rotation axis of the rotating frame (22). The cylinder body of the swing cylinder is rotatably connected to the main frame (21), and the piston rod is rotatably connected to the rotating frame (22). The two swing cylinders are respectively configured as a left swing cylinder (231) and a right swing cylinder (232); The swing mechanism (2) also includes a proportional directional valve (24). The rod chamber of the left swing cylinder (231) is connected to the rodless chamber of the right swing cylinder (232), and they are combined into a pipeline and then connected to the proportional directional valve (24). The rod chamber of the right swing cylinder (232) is connected to the rodless chamber of the left swing cylinder (231), and after being combined into a pipeline, it is connected to the proportional directional valve (24).

2. The forklift hoisting equipment according to claim 1, characterized in that: The gantry (1) includes an outer gantry (11), which is hinged to the vehicle body. The vehicle body is provided with an inclined hydraulic cylinder that drives the outer gantry (11) to rotate on the vehicle body. The inner mast (12) slides up and down on the outer mast (11). The outer mast (11) is equipped with a lifting cylinder, which is used to drive the inner mast (12) to slide up and down. The main frame (21) is set on the inner mast (12) and can slide up and down on the inner mast (12).

3. The forklift hoisting equipment according to claim 1, characterized in that: The lifting device (3) includes a main crossbeam (31), which is connected to the rotating frame (22); And telescopic beams (32), two telescopic beams (32) are provided, the two telescopic beams (32) are inserted into the main crossbeam (31) from both ends respectively, and the two telescopic beams (32) are provided with twist lock mechanism on the part of the two telescopic beams (32) that extends out of the main crossbeam (31), the twist lock mechanism can be inserted into the lock hole of the container to complete the locking.

4. The forklift hoisting equipment according to claim 3, characterized in that: Two extension cylinders are connected to the main crossbeam (31), and the two extension cylinders are used to push the two telescopic beams (32) to slide.

5. A forklift hoisting device according to claim 4, characterized in that: The telescopic beam (32) extending out of the main crossbeam (31) is provided with a top extension cylinder (321). The top extension cylinder (321) is located below the torsion lock mechanism. The top extension cylinder (321) is used to press against the lower crossbeam of the container to keep the container level.

6. The forklift hoisting equipment according to claim 1, characterized in that: The rotating frame (22) includes an insert (221), and the main frame (21) is provided with a fitting groove (211) corresponding to the insert (221). The insert (221) is inserted into the fitting groove (211), and the top and bottom of the insert (221) are respectively attached to the top and bottom of the fitting groove (211).

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