Visual field widening four-stage portal frame

Abstract

The utility model relates to a view widening four-stage portal frame which comprises a first frame body, a second frame body is arranged on the first frame body in a sliding mode, a third frame body is arranged on the second frame body in a sliding mode, a fourth frame body is arranged on the third frame body in a sliding mode, and a fork frame is arranged on the fourth frame body in a sliding mode. A first connecting piece is arranged between the first frame body and the second frame body, a second connecting piece is arranged between the second frame body and the third frame body, a third connecting piece is arranged between the third frame body and the fourth frame body, and a driving piece is arranged between the first frame body and the fork frame. The second connecting piece and the third connecting piece are overlapped in parallel in the thickness direction of the first frame body. The method has the effect of reducing the influence of excessive structures on the visual field of a driver.

Description

Technical Field

[0001] The present application relates to the field of forklift equipment, and in particular to a four-stage gantry with a widened field of view. Background Art

[0002] The forklift mast is an important part of the forklift, used to support and lift cargo. It is usually installed at the front of the forklift and consists of two or more steel or alloy masts, which are raised and lowered by hydraulic cylinders. The design and manufacture of the forklift mast needs to take into account multiple aspects such as strength, stability, durability and safety.

[0003] In order to increase the height of forklifts, multi-level forklift masts were developed. The existing four-level mast can greatly increase the height of forklifts lifting goods. However, the multi-drive structure of the four-level mast is also likely to affect the driver's field of vision when the forklift is driving. Utility Model Content

[0004] In order to reduce the impact of excessive structures on the driver's field of vision, the present application provides a four-stage gantry that widens the field of vision.

[0005] The present application provides a four-stage gantry with widened field of view, which adopts the following technical solution:

[0006] A four-stage gantry with widened field of view comprises a first frame, a second frame is slidably arranged on the first frame, a third frame is slidably arranged on the second frame, a fourth frame is slidably arranged on the third frame, a fork frame is slidably arranged on the fourth frame, a first connecting member is arranged between the first frame and the second frame, a second connecting member is arranged between the second frame and the third frame, a third connecting member is arranged between the third frame and the fourth frame, a driving member is arranged between the first frame and the fork frame, and the second connecting member and the third connecting member are parallel and overlapped along the thickness direction of the first frame.

[0007] By adopting the above technical solution, the first connecting member is used to connect the first frame and the second frame and to guide the sliding of the second frame on the first frame, the second connecting member is used to connect the second frame and the third frame and to guide the sliding of the third frame on the second frame, and the third connecting member is used to connect the third frame and the fourth frame and to guide the sliding of the fourth frame on the third frame. By arranging the positions of the second connecting member and the third connecting member to overlap, the blocking range of the second connecting member and the third connecting member after installation is reduced, thereby reducing the impact of excessive structures on the driver's field of vision.

[0008] Optionally, the driving member is a cylinder, one end of which is fixed on the first frame, and the other end is fixed on the fork frame. The driving member drives the fork frame to slide on the fourth frame. When the fork frame slides to the top of the fourth frame, it drives the fourth frame to slide on the third frame. When the fourth frame slides to the top of the third frame, it drives the third frame to slide on the second frame. The first connecting member drives the second frame to slide on the first frame.

[0009] By adopting the above technical solution, multiple frames are directly driven by a single oil cylinder, which saves power sources and also reduces the probability of too many driving parts blocking the line of sight.

[0010] Optionally, the driving member is parallel and overlapped with the second connecting member and the third connecting member along the thickness direction of the first frame.

[0011] By adopting the above technical solution, the overlap of the driving member with the second connecting member and the third connecting member can further reduce the probability of the line of sight being blocked.

[0012] Optionally, a bearing seat is fixedly provided on the first frame near the bottom of the first frame, and a mounting hole is provided in the middle of the first frame.

[0013] By adopting the above technical solution, the bearing seat is used to connect the connecting shaft on the forklift, and the mounting hole is used to connect the oil cylinder that drives the frame to move as a whole.

[0014] Optionally, two fork rods are detachably mounted on the fork frame.

[0015] By adopting the above technical solution, the detachable fork rod facilitates the selection of the fork rod and also facilitates the replacement of the fork rod when the fork rod is damaged.

[0016] Optionally, the fork rod is slidably arranged on the fork frame along the width direction of the fork frame.

[0017] By adopting the above technical solution, the distance between the two fork rods can be adjusted by sliding the fork rods along the width direction of the fork frame, so that the fork rods can be adjusted according to the width of the objects that need to be inserted by the forklift.

[0018] Optionally, a guide block is fixedly provided on the fork frame, and a clamping block is fixedly provided on the fork rod. The clamping blocks are clamped on both sides of the guide block in the width direction, and the clamping blocks slide on the guide block.

[0019] By adopting the above technical solution, the sight fork rod is adjusted by sliding the clamping block on the guide block.

[0020] Optionally, a screw rod is rotatably provided on the fork frame, a driving block is fixedly provided on the fork rod, and the screw rod is a bidirectional screw rod, and both ends of the screw rod in the length direction are respectively threadedly connected to the driving blocks of the two fork rods.

[0021] By adopting the above technical solution, the two fork rods can be synchronously adjusted toward or away from each other by driving the screw rod.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The first connecting member is used to connect the first frame and the second frame and to guide the second frame to slide on the first frame, the second connecting member is used to connect the second frame and the third frame and to guide the third frame to slide on the second frame, and the third connecting member is used to connect the third frame and the fourth frame and to guide the fourth frame to slide on the third frame. By arranging the positions of the second connecting member and the third connecting member to overlap, the blocking range of the second connecting member and the third connecting member after installation is reduced, thereby reducing the impact of excessive structures on the driver's field of vision;

[0024] 2. Directly driving multiple frames through a single oil cylinder saves power source and reduces the probability of too many driving parts blocking the line of sight. The overlap of the driving part with the second connecting part and the third connecting part can further reduce the probability of the line of sight being blocked;

[0025] 3. The fork rods can slide along the width direction of the fork frame to adjust the distance between the two fork rods, so that the fork rods can be adjusted according to the width of the items that need to be inserted by the forklift. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of Example 1 of the present application from another perspective.

[0028] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. First frame; 2. Second frame; 3. Third frame; 4. Fourth frame; 5. Fork frame; 6. First connecting member; 7. Second connecting member; 8. Third connecting member; 9. Driving member; 10. Bearing seat; 11. Mounting hole; 12. Fork rod; 13. Guide block; 14. Clamping block; 15. Notch; 16. Screw; 17. Driving block; 18. Oil pipeline; 19. Mounting frame. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] Embodiment 1:

[0032] The present application embodiment discloses a four-stage gantry with widened field of view, referring to Figure 1, including a first frame body 1 in the shape of a door as a whole, a second frame body 2 in the shape of a door as a whole is slidably arranged on the first frame body 1, a third frame body 3 in the shape of a door as a whole is slidably arranged on the second frame body 2, a fourth frame body 4 in the shape of a door as a whole is slidably arranged on the third frame body 3, a rectangular fork frame 5 is slidably arranged on one side of the fourth frame body 4 in the thickness direction, the fork frame 5 is slidably arranged on the fourth frame body 4, a first connecting member 6 is arranged between the first frame body 1 and the second frame body 2, the first connecting member 6 is an oil cylinder, one end of the oil cylinder is fixedly arranged on the first frame body 1, and the other end is fixedly arranged on the second frame body 2, and the oil cylinder drives the second frame body 2 When sliding along the height direction of the first frame 1, in this embodiment, two first connecting members 6 are provided, which are respectively located at the two ends of the width direction of the first frame 1, a second connecting member 7 is provided between the second frame 2 and the third frame 3, and a third connecting member 8 is provided between the third frame 3 and the fourth frame 4. In this embodiment, the second connecting member 7 and the third connecting member 8 are both tow chains, one end of the second connecting member 7 is fixed on the second frame 2 and the other end is fixed on the third frame 3, one end of the third connecting member 8 is fixed on the second frame 2 and the other end is fixed on the third frame 3, and a fork frame 5 is provided between the first frame 1 and the fork frame 5. There is a driving member 9, which is a cylinder. One end of the driving member 9 is fixed on the first frame 1, and the other end is fixed on the fork frame 5. The driving member 9 drives the fork frame 5 to slide on the fourth frame 4. When the fork frame 5 slides to the top of the fourth frame 4, it drives the fourth frame 4 to slide on the third frame 3. When the fourth frame 4 slides to the top of the third frame 3, it drives the third frame 3 to slide on the second frame 2. The first connecting member 6 drives the second frame 2 to slide on the first frame 1. The driving member 9 overlaps with the second connecting member 7 and the third connecting member 8 in parallel along the thickness direction of the first frame 1. The first connecting member 6 It is used to connect the first frame 1 and the second frame 2 and to guide the second frame 2 to slide on the first frame 1. The second connecting member 7 is used to connect the second frame 2 and the third frame 3 and to guide the third frame 3 to slide on the second frame 2. The third connecting member 8 is used to connect the third frame 3 and the fourth frame 4 and to guide the fourth frame 4 to slide on the third frame 3. By arranging the positions of the second connecting member 7 and the third connecting member 8 to overlap, the blocking range of the second connecting member 7 and the third connecting member 8 after installation is reduced, thereby reducing the impact of excessive structures on the driver's field of vision.

[0033] Reference Figure 1 A mounting frame 19 is fixedly provided on the second connecting member 7 and the third connecting member 8, and the mounting frame 19 is used to fix the oil pipeline 18 of the driving member 9, thereby reducing the probability that the oil pipeline 18 spreads around and affects the line of sight.

[0034] Reference Figure 1 and Figure 2A bearing seat 10 is fixedly provided on the side of the first frame 1 away from the fork frame 5 and near the bottom of the first frame 1. The bearing seat 10 is used to be mounted on the bearing of the forklift to connect the forklift. A mounting hole 11 is provided in the middle of the first frame 1. The mounting hole 11 is used to install the oil cylinder connecting the frame and the forklift.

[0035] Reference Figure 1 Two fork rods 12 are detachably mounted on the fork frame 5; the fork rod 12 is slidably arranged on the fork frame 5 along the width direction of the fork frame 5; a guide block 13 is fixedly arranged on the fork frame 5, and the guide block 13 is T-shaped as a whole. A clamping block 14 is fixedly arranged on the fork rod 12, and the fork rod 12 is clamped on both sides of the guide block 13 in the width direction through two clamping blocks 14, and the clamping block 14 slides on the guide block 13, and a notch 15 is opened on the guide block 13, and the clamping block 14 enters from the notch 15 to be clamped on the guide block 13 or leaves from the notch 15 to be detached from the clamping block 14, thereby realizing the disassembly and assembly of the fork rod 12.

[0036] The implementation principle of the embodiment of the present application is as follows: the door frame is installed on the forklift through the bearing seat 10 and the mounting hole 11, and then the fork rod 12 is driven to slide and adjust the position of the fork rod 12 on the fork frame 5 according to the actual items to be transported, and the second frame 2 is driven to descend on the first frame 1 through the first connecting member 6 so that the fork rod 12 is forked from under the items, and then the items are lifted off the ground by lifting the second frame 2, and the items are transported to the required placement area through the travel of the forklift. When the placement height is high, the fork frame 5 is driven to be lifted on the fourth frame 4 by the driving member 9. After the fork frame 5 is lifted to the top of the fourth frame 4, the driving member 9 continues to drive the fourth frame 4 to be lifted on the third frame 3. After the fourth frame 4 is lifted to the top of the third frame 3, the driving member 9 continues to drive the third frame 3 to be lifted on the second frame 2, until the items are lifted to the required height and the items are placed in the required placement area through the travel of the forklift.

[0037] Embodiment 2:

[0038] The difference between this embodiment and the first embodiment is that the method of driving the fork rod 12 in this embodiment is different.

[0039] Reference Figure 3 A screw rod 16 is rotatably provided on the fork frame 5, and a driving block 17 is fixed on the fork rod 12. The screw rod 16 is a bidirectional screw rod 16. Both ends of the screw rod 16 in the length direction are respectively threadedly connected with the driving blocks 17 of the two fork rods 12. The driving screw 16 can realize synchronous adjustment of the two fork rods 12 towards or away from each other.

[0040] The implementation principle of the embodiment of the present application is as follows: the door frame is installed on the forklift through the bearing seat 10 and the mounting hole 11, and then the screw 16 is driven to rotate and adjust the position of the fork rod 12 on the fork frame 5 according to the actual items to be transported, and the second frame 2 is driven to descend on the first frame 1 through the first connecting member 6 so that the fork rod 12 is forked from under the items, and then the items are lifted off the ground by lifting the second frame 2, and the items are transported to the required placement area through the travel of the forklift. When the placement height is high, the fork frame 5 is driven to be lifted on the fourth frame 4 through the driving member 9. When the fork frame 5 is lifted to the top of the fourth frame 4, the driving member 9 continues to drive the fourth frame 4 to be lifted on the third frame 3. When the fourth frame 4 is lifted to the top of the third frame 3, the driving member 9 continues to drive the third frame 3 to be lifted on the second frame 2, until the items are lifted to the required height and then placed in the required placement area through the travel of the forklift.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A four-stage gantry with widened field of vision, comprising a first frame (1), a second frame (2) being slidably arranged on the first frame (1), a third frame (3) being slidably arranged on the second frame (2), a fourth frame (4) being slidably arranged on the third frame (3), a fork frame (5) being slidably arranged on the fourth frame (4), a first connecting member (6) being arranged between the first frame (1) and the second frame (2), a second connecting member (7) being arranged between the second frame (2) and the third frame (3), a third connecting member (8) being arranged between the third frame (3) and the fourth frame (4), and a driving member (9) being arranged between the first frame (1) and the fork frame (5), characterized in that: The second connecting member (7) and the third connecting member (8) are parallel and overlapped along the thickness direction of the first frame body (1).

2. A four-stage gantry for widening the field of vision according to claim 1, characterized in that: The driving member (9) is a cylinder. One end of the driving member (9) is fixed on the first frame (1), and the other end is fixed on the fork frame (5). The driving member (9) drives the fork frame (5) to slide on the fourth frame (4). When the fork frame (5) slides to the top of the fourth frame (4), it drives the fourth frame (4) to slide on the third frame (3). When the fourth frame (4) slides to the top of the third frame (3), it drives the third frame (3) to slide on the second frame (2). The first connecting member (6) drives the second frame (2) to slide on the first frame (1).

3. A four-stage gantry for widening the field of vision according to claim 2, characterized in that: The driving member (9) is parallel and overlapped with the second connecting member (7) and the third connecting member (8) along the thickness direction of the first frame body (1).

4. The four-stage gantry for widening the field of vision according to claim 3, characterized in that: A bearing seat (10) is fixedly provided on the first frame body (1) near the bottom of the first frame body (1), and a mounting hole (11) is provided in the middle of the first frame body (1).

5. The four-stage gantry with widened vision according to claim 1, characterized in that: Two fork rods (12) are detachably mounted on the fork frame (5).

6. The four-stage gantry for widening the field of vision according to claim 5, characterized in that: The fork rod (12) is slidably disposed on the fork frame (5) along the width direction of the fork frame (5).

7. The four-stage gantry for widening the field of vision according to claim 6, characterized in that: A guide block (13) is fixedly provided on the fork frame (5), and a clamping block (14) is fixedly provided on the fork rod (12). The clamping blocks (14) are clamped on both sides of the guide block (13) in the width direction, and the clamping blocks (14) slide on the guide block (13).

8. The four-stage gantry for widening the field of vision according to claim 6, characterized in that: A screw rod (16) is rotatably arranged on the fork frame (5), and a driving block (17) is fixedly arranged on the fork rod (12). The screw rod (16) is a bidirectional screw rod (16), and both ends of the screw rod (16) in the length direction are respectively threadedly connected to the driving blocks (17) of the two fork rods (12).

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