Bilateral grab type concrete guardrail unloading structure

Abstract

The utility model belongs to concrete guardrail unloading technical field, concretely relates to a kind of double-side grabbing type concrete guardrail unloading structure, including lifting support, and two clamping mechanisms that are symmetrical left and right are installed on lifting support, the clamping mechanism includes swing frame hinged on lifting support, swing frame drive assembly is connected between the upper end of swing frame and lifting support, the lower end of swing frame is fixedly connected with shaft seat, and turnover shaft is rotatably connected in shaft seat, one end of turnover shaft is connected with turnover shaft drive assembly, the other end of turnover shaft is fixedly connected with mounting seat, and clamping seat is hinged on mounting seat.The utility model can drive two swing frames to swing relatively by the action of two swing frame drive assemblies, to drive two clamping seats to clamp concrete guardrail, to realize the grabbing of concrete guardrail;By the action of two turnover shaft drive assemblies, two turnover shafts can be driven to rotate 180 °, i.e., concrete guardrail can be driven to overturn 180 °, to realize that the bottom surface of concrete guardrail is placed downward.

Description

Technical Field

[0001] This utility model relates to a double-sided gripping concrete guardrail unloading structure, belonging to the field of concrete guardrail unloading technology. Background Technology

[0002] Road guardrails play a vital role in urban road construction, primarily functioning to maintain traffic order, ensure the safety of drivers, passengers, and pedestrians, and prevent and reduce traffic accidents. Concrete guardrails are a type of road guardrail, prefabricated by pouring concrete into a mold truck and then curing it. After production, prefabricated concrete guardrails typically require unloading using a guardrail unloading device. Traditional concrete guardrails have a large flat back side, and in use, two guardrails are usually placed back-to-back in the center of the road. With improvements in prefabricated concrete mold technology, one-piece concrete guardrails with curved front and rear sides have emerged. Due to these structural improvements, traditional unloading devices are no longer suitable. For example, Chinese utility model patent CN218200924U discloses a suction cup-type guardrail unloading device that uses a vacuum suction cup to pick up the large flat back side of the guardrail, thereby removing it from the mold truck for placement. The aforementioned existing technology can only be applied to unloading guardrails with a large flat back side. However, it is not suitable for one-piece concrete guardrails with curved front and rear sides because there is no space for material to be absorbed. Therefore, it is necessary to develop an unloading device that can be used for concrete guardrails with double curved surfaces on both the front and rear sides. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a double-sided grabbing concrete guardrail unloading structure that can unload materials from the front and rear hyperboloid concrete guardrails.

[0004] The double-sided gripping concrete guardrail unloading structure of this utility model includes a lifting bracket, on which two symmetrical clamping mechanisms are installed. Each clamping mechanism includes a swing frame hinged to the lifting bracket. A swing frame drive assembly is connected between the upper end of the swing frame and the lifting bracket. A shaft seat is fixedly connected to the lower end of the swing frame. A flip shaft is rotatably connected inside the shaft seat. A flip shaft drive assembly is connected to one end of the flip shaft, and a mounting base is fixedly connected to the other end of the flip shaft. A clamping seat is hinged on the mounting base.

[0005] Furthermore, the swing frame drive assembly includes an upper hinge seat fixedly connected to the lifting bracket and a swing arm hinged to the lifting bracket. A drive rod is hinged to the swing arm, one end of which is hinged to the swing frame, and the other end of which is fixedly connected to a lower hinge seat. A hydraulic cylinder is hinged between the upper hinge seat and the lower hinge seat.

[0006] Furthermore, a limit bracket is fixedly connected to the lifting bracket, a limit screw is threadedly connected to the limit bracket, and a limit plate corresponding to the limit screw is fixedly connected to the bottom of the drive rod.

[0007] Furthermore, a rubber pad is fixedly connected to the clamp.

[0008] Furthermore, the tilting shaft drive assembly includes a reducer mounted on the swing frame and a driven gear fixedly connected to the tilting shaft. A servo motor is connected to the reducer, and a driving gear is fixedly connected to the output shaft of the reducer. A transmission chain connects the driving gear and the driven gear.

[0009] Furthermore, a protective cover corresponding to the transmission chain is fixedly connected to the swing frame.

[0010] The advantages of this utility model compared with the prior art are: The double-sided gripping concrete guardrail unloading structure of this utility model uses two swing frame drive components to drive the two swing frames to swing relative to each other, thereby clamping the concrete guardrail with two clamps to achieve gripping of the concrete guardrail. The double-sided gripping concrete guardrail unloading structure of this utility model can drive the two swing frames to move relative to or in opposite directions under the action of the drive rod and the swing arm through the extension and retraction of the hydraulic cylinder. By utilizing the lever principle, the size of the hydraulic cylinder can be minimized while ensuring sufficient clamping force. The double-sided gripping concrete guardrail unloading structure of this utility model uses a toothed chain for transmission, which has high power transmission, strong overload capacity, no slippage, reliable operation, and high transmission efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 Enlarged view at point M; Figure 3 This is the front view of this utility model; Figure 4 yes Figure 3 A magnified view of point N in the middle.

[0012] In the diagram: 1. Lifting bracket; 2. Upper hinge seat; 3. Hydraulic cylinder; 4. Lower hinge seat; 5. Drive rod; 6. Swing arm; 7. Swing frame; 8. Concrete guardrail; 9. Shaft seat; 10. Driven gear; 11. Transmission chain; 12. Reducer; 13. Servo motor; 14. Protective cover; 15. Limit bracket; 16. Limit screw; 17. Mounting seat; 18. Clamping seat; 19. Rubber pad; 20. Limit plate. Detailed Implementation

[0013] The embodiments of this utility model will be further described below with reference to the accompanying drawings: Example 1: like Figures 1 to 4 As shown, the double-sided gripping concrete guardrail unloading structure of this utility model includes a lifting bracket 1, on which two symmetrical clamping mechanisms are installed. The clamping mechanism includes a swing frame 7 hinged to the lifting bracket 1. A swing frame drive assembly is connected between the upper end of the swing frame 7 and the lifting bracket 1. A bearing seat 9 is fixedly connected to the lower end of the swing frame 7. A flipping shaft is rotatably connected inside the bearing seat 9. A flipping shaft drive assembly is connected to one end of the flipping shaft. A mounting base 17 is fixedly connected to the other end of the flipping shaft. A clamping seat 18 is hinged on the mounting base 17.

[0014] In use, the two swing frame drive components move, causing the two swing frames to swing relative to each other, which in turn causes the two mounting seats 17 to move relative to each other, thereby causing the two clamps 18 to clamp the concrete guardrail 8, thus achieving the gripping of the concrete guardrail 8; after gripping, the two flip shaft drive components move, causing the two flip shafts to rotate 180°, which in turn causes the two mounting seats 17 and the two clamps 18 to rotate the concrete guardrail 8 180°, so that the bottom surface of the concrete guardrail 8 faces down, thus achieving the placement of the concrete guardrail 8.

[0015] Example 2: like Figures 1 to 4 As shown, based on Example 1, Furthermore, the swing frame drive assembly includes an upper hinge seat 2 fixedly connected to the lifting bracket 1 and a swing arm 6 hinged to the lifting bracket 1. A drive rod 5 is hinged to the swing arm 6, one end of which is hinged to the swing frame 7, and the other end of which is fixedly connected to a lower hinge seat 4. A hydraulic cylinder 3 is hinged between the upper hinge seat 2 and the lower hinge seat 4. Through the extension and retraction of the hydraulic cylinder 3, the two swing frames 7 can be driven to move relative to or in opposite directions under the action of the drive rod 5 and the swing arm 6. Since the distance from the hinge point of the swing arm 6 and the drive rod 5 to the lower hinge seat 4 is much greater than the distance to the swing frame 7, the size of the hydraulic cylinder 3 can be minimized while ensuring sufficient clamping force by utilizing the lever principle.

[0016] Furthermore, a limiting bracket 15 is fixedly connected to the lifting bracket 1, and a limiting screw 16 is threadedly connected to the limiting bracket 15. A limiting plate 20 corresponding to the limiting screw 16 is fixedly connected to the bottom of the drive rod 5. By using the limiting screw 16 and the limiting plate 20 in cooperation, the stroke of the hydraulic cylinder 3 can be limited, thereby improving its applicability.

[0017] Furthermore, a rubber pad 19 is fixedly connected to the clamp 18. The rubber pad 19 can not only prevent rigid compression of the concrete guardrail 8 during clamping and cause damage, but also improve the clamping effect by utilizing its anti-slip properties.

[0018] Furthermore, the tilting shaft drive assembly includes a reducer 12 mounted on the swing frame 7 and a driven gear 10 fixedly connected to the tilting shaft. A servo motor 13 is connected to the reducer 12, and a driving gear is fixedly connected to the output shaft of the reducer 12. A transmission chain 11 connects the driving gear and the driven gear 10. When the servo motor 13 is activated, the driving gear is driven to rotate under the action of the reducer 12, thereby driving the tilting shaft to rotate through the transmission chain 11 and the driven gear 10. The gear chain transmission method provides high power transmission, strong overload capacity, no slippage, reliable operation, and high transmission efficiency.

[0019] Furthermore, a protective cover 14 corresponding to the transmission chain 11 is fixedly connected to the swing frame 7, and the protective cover 14 serves as a safety protection function.

[0020] It should be noted that in the description of this utility model, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A double-sided gripping concrete guardrail unloading structure, characterized in that: The device includes a lifting bracket (1), on which two clamping mechanisms are installed symmetrically on the left and right. The clamping mechanism includes a swing frame (7) hinged to the lifting bracket (1). The upper end of the swing frame (7) is connected to the lifting bracket (1) by a swing frame drive assembly. The lower end of the swing frame (7) is fixedly connected to a bearing seat (9). A flipping shaft is rotatably connected inside the bearing seat (9). One end of the flipping shaft is connected to a flipping shaft drive assembly. The other end of the flipping shaft is fixedly connected to a mounting base (17). A clamping seat (18) is hinged on the mounting base (17).

2. The double-sided gripping concrete guardrail unloading structure according to claim 1, characterized in that: The swing frame drive assembly includes an upper hinge seat (2) fixedly connected to the lifting bracket (1) and a swing arm (6) hinged to the lifting bracket (1). A drive rod (5) is hinged to the swing arm (6). One end of the drive rod (5) is hinged to the swing frame (7), and the other end of the drive rod (5) is fixedly connected to a lower hinge seat (4). A hydraulic cylinder (3) is hinged between the upper hinge seat (2) and the lower hinge seat (4).

3. The dual-sided grab-rail concrete barrier unloading structure of claim 2, wherein: The lifting bracket (1) is fixedly connected to a limiting bracket (15), and the limiting bracket (15) is threadedly connected to a limiting screw (16). The bottom of the driving rod (5) is fixedly connected to a limiting plate (20) corresponding to the limiting screw (16).

4. The double-sided gripping concrete guardrail unloading structure according to claim 1, characterized in that: A rubber pad (19) is fixedly connected to the clamp (18).

5. The double-sided gripping concrete guardrail unloading structure according to any one of claims 1 to 4, characterized in that: The flip shaft drive assembly includes a reducer (12) mounted on the swing frame (7) and a driven gear (10) fixedly connected to the flip shaft. A servo motor (13) is connected to the reducer (12), and a drive gear is fixedly connected to the output shaft of the reducer (12). A transmission chain (11) is connected between the drive gear and the driven gear (10).

6. The dual-sided grab-rail concrete barrier unloading structure of claim 5, wherein: The swing frame (7) is fixedly connected with a protective cover (14) corresponding to the transmission chain (11).

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