Gripping mechanism of reinforcement cage and carrying device of XinJetting guardrail reinforcement cage

Abstract

The utility model discloses a grabbing mechanism of a reinforcement cage and a carrying device of a New Jersey guardrail reinforcement cage, and relates to the technical field of pavement guardrail production, a lifting mechanism is connected to a guide rail in a sliding mode, the periphery of a hook frame is connected with the lifting mechanism through a lifting rope, and rotatable hook shafts are arranged at the two ends of the hook frame respectively. The hook shaft is provided with at least two arc hooks extending in the circumferential direction, and the two ends of the telescopic rod are hinged to the two rocker arms respectively. The lifting mechanism is controlled to drive the arc hook to ascend or descend, the telescopic rod is controlled to stretch out and draw back to drive the arc hook to rotate outwards or inwards by a certain angle, in this way, a reinforcement cage below can be hooked to be grabbed, then the reinforcement cage is moved to the loading position, and the reinforcement cage is put down.

Description

Technical Field

[0001] The utility model relates to the technical field of road guardrail production, in particular to a conveying device for a New Jersey guardrail steel cage. Background Art

[0002] New Jersey guardrail production lines generally include functions such as steel bar mold placement, concrete pouring, automatic vibration, automatic steam curing, automatic grinding, and automatic spraying of release agents. Currently, New Jersey guardrail steel cages are generally manually tied and transported. The tied steel cages are manually transported to the rail trolley. The tied steel cages weigh approximately 80 kg and are relatively large. Multiple racks (for placing steel bars and tying steel bars) are arranged on both sides of the rail trolley. The farthest rack is approximately 10 meters away from the trolley, requiring two or three workers to carry the cages. This is labor-intensive, and the cages can become loose or deformed due to the bumpy ride during transportation. Utility Model Content

[0003] The purpose of the invention of the utility model is to solve the above problems and provide a grabbing mechanism and a handling device for the New Jersey guardrail steel cage, which can realize the grabbing, handling and unloading of the steel cage.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] A handling device for a New Jersey guardrail steel cage includes a stand, a guide rail, a rail car and a lifting mechanism. The stand is provided with a guide rail, which is arranged at a certain height from the ground and extends longitudinally. The guide rail is slidably connected to the rail car. The rail car is provided with a lifting mechanism. The lifting mechanism is configured to be connected to a lifting rope and can lift and lower by pulling the lifting rope; it also includes a grasping mechanism, which includes a hook frame, a rotating hook and a telescopic rod. The lifting mechanism is connected to the hook frame around the lifting rope. Rotating hooks are respectively provided at both ends of the hook frame. The rotating hook includes a hook shaft, an arc hook and a rocker arm. The hook shaft can be rotatably arranged on the hook frame. The hook shaft is provided with at least two circumferentially extending arc hooks. The hook shaft is provided with a radially extending rocker arm. The two ends of the telescopic rod are respectively hinged to the rocker arms of the two rotating hooks, and the arc hook can rotate outward or inward by a certain angle when the telescopic rod is telescopically driven.

[0006] The telescopic rod is an electric push rod, a pneumatic cylinder or a hydraulic cylinder. The telescopic rod is provided with a controller, and the controller is electrically connected to the lifting mechanism.

[0007] The lifting mechanism is a hand chain hoist or an electric hoist, the rail car is provided with a hanging seat, the hanging seat is provided with a hanging hole, the upper hook of the hand chain hoist or the electric hoist is hooked in the hanging hole, and at least 4 lifting rings are provided around the top surface of the hook frame. The lower hook of the hand chain hoist or the electric hoist is connected to the upper end of the lifting rope, and the lifting rope is equipped with at least 4 lower ends and they are respectively connected to at least 4 lifting rings.

[0008] The rotary hook also includes a support and a bearing. The hook shaft is arranged to extend longitudinally. Both ends of the hook shaft are arranged on the hook frame through the bearing and the support. The bearing connection has a better rotation connection.

[0009] As mentioned above, the lifting mechanism is slidably connected to the guide rails, and the hook frame is connected to the lifting mechanism by ropes on all four sides. A rotatable hook shaft is provided at each end of the hook frame, each equipped with at least two circumferentially extending arc hooks. The ends of the telescopic rod are hinged to two rocker arms. The lifting mechanism is controlled to raise or lower the arc hook, and the telescopic rod is controlled to extend and retract, driving the arc hook to rotate outward or inward to a certain angle. This allows the hook to hook onto the rebar cage below and capture it. The cage is then moved to the loading position and lowered.

[0010] Based on the above solution, an improved solution addresses the issue of limiting the rotation angle of the hook when the telescopic rod pushes it. The hook has an elliptical, arc-shaped structure at the long end of its axis. The hook head can rotate between the top and bottom rods of the hook frame, and both the top and bottom rods are parallel to the hook axis. This creates limit structures on both sides of the hook's rotation angle, preventing the hook from rotating too narrowly or too widely, making it difficult to reset and reciprocate.

[0011] Based on the aforementioned solution, in an improved solution, to address the problem of localized vertical warping of the rebar cage, the bottom surface of the hook frame is smaller than or equal to the side surface of the rebar cage. The bottom surface of the hook frame has a stepped structure. From the left end to the right end, the bottom surface of the hook frame is composed of a left bottom surface, a middle bottom surface, and a right bottom surface. The left bottom surface is lower than the right bottom surface. The left and middle bottom surfaces are both inclined, with the angles of the left and middle bottom surfaces adapted to the side surface of the rebar cage. The top surface of the hook frame is a flat structure. In this way, the localized vertical warping of the side surface of the rebar cage, which is hooked by the arc hook, can be attached to the bottom surface of the hook frame, reducing deformation and improving connection stability.

[0012] Based on the above solution, in an improved solution, in order to solve the problem of unobstructed space in the workstation area, the stand includes columns and angle brackets. Several columns are evenly arranged longitudinally on the factory floor. Each column is equipped with an angle bracket, which protrudes from the left side of the column. The guide rail extends longitudinally on the angle bracket, and the guide rail is directly above the tying frame. In this way, the guide rail protrudes from one side of the column above the workstation area and does not occupy the ground space of the workstation area. In a preferred embodiment, the stand also includes a top section. Each two columns are provided with a top section. The top of the column extends vertically with a top section, and the top section can be connected to the top of the factory. In this way, the ends of the column and the top section are fixed, which can improve the stability of the connection.

[0013] Based on the above solution, in an improved solution, to address the problem of placing a rebar cage at the loading station, the gripping device also includes a front frame located directly below the guide rails. Its top surface is equipped with V-shaped angled plates, with several angled plates extending horizontally and several longitudinally. This allows the angled plates to support the placement of the rebar cage, allowing it to be loaded onto the vehicle and then transferred to the next process.

[0014] Based on the above solution, in an improved solution, to address the issue of monitoring the descent height limit during material grabbing, the material grabbing device also includes a limiter for detecting the lifting height of the lifting mechanism. The limiter includes a limiter pressure plate, which is arranged around the bottom surface of the hook frame. The limiter pressure plates protrude from the bottom surface of the hook frame and are slidably mounted on the bottom surface of the hook frame. In this way, the limiter pressure plates can slide up and down, moving upward after contacting the steel cage, thereby achieving height limit monitoring. At the same time, multiple limiter pressure plates are arranged around the perimeter to form a monitoring surface, preventing the hook frame from tilting and causing insufficient descent height.

[0015] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0016] The utility model provides a transport device for the New Jersey guardrail steel cage, which controls the lifting mechanism to lift or lower the arc hook, and controls the telescopic rod to drive the arc hook to rotate outward or inward to a certain angle. In this way, the steel cage hook below can be hooked to achieve grasping, and then moved to the loading position and the steel cage can be lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall layout of the handling device of the present utility model. Figure 2 yes Figure 1 Schematic diagram of the frame and rail car structure.

[0018] Figure 3 yes Figure 2 A partial enlarged view of . Figure 4 yes Figure 2 Another enlarged view of a part. Figure 5 yes Figure 2 Diagram of the connection between guide rail and rail car.

[0019] Figure 6 yes Figure 2 Schematic diagram of the rail vehicle structure. Figure 7 yes Figure 6 Another perspective structural diagram. Figure 8 yes Figure 1 Connection diagram of hook frame and electric hoist. Figure 9 yes Figure 8 Top view of electric hoist and lifting rope. Figure 10 yes Figure 8 Schematic diagram of the electric hoist structure. Figure 11yes Figure 8 Schematic diagram of the hook frame structure. Figure 12 yes Figure 11 Schematic diagram of the local structure from another perspective. Figure 13 yes Figure 11 Another perspective structural diagram of . Figure 14 yes Figure 11 Another perspective diagram of the local structure. Figure 15 yes Figure 1 Side view of the hook rack in the unfolded state. Figure 16 yes Figure 15 Partial top view. Figure 17 yes Figure 15 The hook frame is in the unfolded state and is coordinated with the side structure of the steel cage. Figure 18 yes Figure 1 The hook frame grabbing state is coordinated with the side structure of the steel cage. Figure 19 yes Figure 1 Schematic diagram of the electric push rod structure. Figure 20 yes Figure 1 Schematic diagram of the front frame structure. Figure 21 yes Figure 20 A partial enlarged view of .

[0020] In the attached drawings, 1 is a vertical frame, 2 is a grabbing mechanism, 3 is a front frame, 4 is a rail trolley, and 5 is a tire frame. DETAILED DESCRIPTION

[0021] Example 1

[0022] See also Figure 1 , the up-down direction in the figure is the longitudinal direction, and the left-right direction in the figure is the transverse direction (lateral left side and horizontal right side).

[0023] See also Figures 1-21 The present embodiment is a transport device for a New Jersey guardrail steel cage, comprising a stand 1, a guide rail 14, a rail car 15 and a lifting mechanism. The stand 1 is provided with a guide rail 14, which is at a certain height (for example, 2m or 2.5m) from the ground and extends longitudinally. The guide rail 14 is slidably connected to the rail car 15, and the rail car 15 is provided with a lifting mechanism. The lifting mechanism is configured with a suspension rope 22 and can be lifted and lowered by pulling the suspension rope; the lifting mechanism also comprises a grabbing mechanism 2, which comprises a hook frame 24, a rotating hook 25 and a telescopic rod 27. The lifting mechanism is connected to the suspension rope by the lifting mechanism 22. Connected to the hook frame around, the two ends of the hook frame 24 are respectively provided with a rotating hook 25, the rotating hook 25 includes a hook shaft 252, an arc hook 253 and a rocker arm 254, the hook shaft 252 is rotatably set on the hook frame 24, the hook shaft 252 is provided with at least two circumferentially extending arc hooks 253, the hook shaft 252 is provided with a radially extending rocker arm 254, the two ends of the telescopic rod 27 are respectively hinged to the rocker arms 254 of the two rotating hooks 25, and the arc hook 253 can rotate outward or inward at a certain angle, such as 80° or 90°, when the telescopic rod is telescopically driven.

[0024] The hook frame is composed of horizontal and vertical bars connected horizontally and vertically to form a frame structure. It can be flat, square, rectangular, or cylindrical. As shown in the figure, it has a stepped structure. The two rotating hooks have the same structure. For ease of description, they are labeled as rotating hook 25 and rotating hook 25' according to their installation position.

[0025] The telescopic rod can be set above or below the two hook shafts, preferably above, to free up space on the bottom surface of the hook frame, as shown in the figure; start the telescopic rod to retract, the arc hook 253 rotates outward to the left and right horizontal positions, forming an expanded state, exposing the space within the hook groove range below it, so that the steel cage 100 can be inserted; start the telescopic rod to extend outward, the arc hook rotates inward to the lower vertical position, forming a grasping state, hooking the axial steel bars of the steel cage 100 within its hook groove range, and the axial steel bars of the steel cage are in the center area of ​​the arc hook groove, as shown in the figure, the rotating hook 25 hooks the steel bar 101, and the rotating hook 25' hooks the steel bar 102.

[0026] The guide rail 14 can be a single rail or a double rail, and is compatible with the rail car 15. The rail car can be powered or manually propelled. The rail car and the guide rail are both existing technologies and can be purchased on the market and installed and connected according to the instructions. No further details are given here. This application uses a manually propelled single rail structure as an example. The rail car 15 is provided with two sets of pulleys 151 clamped on the guide rail 14. The rail car 15 is provided with a hanging seat 152, and the hanging seat 152 is provided with a hanging hole 153.

[0027] The lifting mechanism is an existing device such as a hand chain hoist or electric hoist, elevator, or winch. This application uses a hand chain hoist or electric hoist as an example for explanation. As shown in the figure, the upper hook of the hand chain hoist or electric hoist 21 is hooked into the hanging hole 153. At least four lifting rings 23 are provided around the top surface of the hook frame 24. The lower hook of the hand chain hoist or electric hoist 21 is connected to the upper end of the lifting rope 22. The lifting rope 22 has at least four lower ends, which are respectively connected to at least four lifting rings. For example, the four lifting rings 23 arranged at the four corners of the hook frame are respectively connected to the four lower ends of the lifting rope 22. Electric equipment such as electric hoists are equipped with a controller to connect and control their operation or stopping, which is an existing technology.

[0028] The telescopic rod is an existing device such as an electric push rod 27, a pneumatic cylinder or a hydraulic cylinder. The telescopic rod is equipped with a controller to connect and control its telescopic drive operation or stop. This is an existing technology. As shown in the figure, this application uses the electric push rod 27 as an example. In order to simplify the structure and achieve unified control, the electric telescopic rod and the lifting mechanism are both electrically connected to the same controller.

[0029] The rotatable hook 25 also includes a support 251 and a bearing. The hook shaft 252 extends longitudinally. Both ends of the hook shaft 252 are connected to the hook frame 24 via the bearings and support 251. The bearing connection provides a good rotational connection. This rotatable connection structure is an existing technology. Other methods, such as using a hook shaft that is sleeved in a ring and connected to the hook frame, can be used.

[0030] The handling process of the handling device is as follows: after completing the binding of the steel cage on the tire frame (binding tire frame) 5, first start the electric push rod to retract the control arc hook to rotate outward to the expanded state, and at the same time start the electric hoist to descend to the preset grabbing height, then start the electric push rod to extend the control arc hook to rotate inward to the grabbing state, and then start the electric hoist to rise to the preset moving height, and then manually push the hook frame slowly to move the rail car to the loading position, and then start the electric hoist 21 to descend to the preset placement height, and then start the electric push rod to retract the control arc hook to rotate outward to the expanded state, and then the electric hoist 21 rises and leaves the steel cage so that the workers can proceed to the next process and complete the material grabbing and handling work.

[0031] As mentioned above, the lifting mechanism is slidably connected to the guide rails, and the hook frame is connected to the lifting mechanism by ropes on all four sides. A rotatable hook shaft is provided at each end of the hook frame, each equipped with at least two circumferentially extending arc hooks. The ends of the telescopic rod are hinged to two rocker arms. The lifting mechanism is controlled to raise or lower the arc hook, and the telescopic rod is controlled to extend and retract, driving the arc hook to rotate outward or inward to a certain angle. This allows the hook to hook onto the rebar cage below and capture it. The cage is then moved to the loading position and lowered.

[0032] Example 2

[0033] Based on Example 1, this embodiment has a corner limiting structure, which is as follows:

[0034] See also Figures 1-21 The telescopic rod is connected to the two hook shafts to control rotation. If the extension is too large, the telescopic rod will press on the hook shaft, making it difficult to reset and reciprocate. If the extension is too small, the telescopic rod will fall below the hook shaft, making it difficult to reset and reciprocate. Therefore, in order to solve the problem of limiting the rotation angle of the arc hook pushed by the telescopic rod, in this embodiment 2, the arc hook 253 is a flat arc structure, preferably an elliptical arc structure with an elliptical long axis end. The hook head of the arc hook 253 can rotate between the top rod (top cross rod or top vertical rod) and the bottom rod (bottom cross rod or bottom vertical rod) of the hook frame, and the top rod and bottom rod are both parallel to the hook shaft. In the example shown in the figure, the hook shaft extends longitudinally, and the arc hook is arranged between the bottom vertical rod and the top vertical rod. In this way, limit structures are formed on both sides of the arc hook's rotation angle to prevent the rotation angle from being too small or too large, which would make it difficult to reset and reciprocate.

[0035] Example 3

[0036] On the basis of Example 1 or Example 2, this embodiment has an adaptive abutment surface structure, specifically as follows:

[0037] See also Figures 1-21 , hooking at various points via arc hooks may cause the steel cage to partially warp up and down. Therefore, in order to solve the problem of local warping of the steel cage, in this embodiment 2, the bottom surface of the hook frame 24 is smaller than or equal to the side surface of the steel cage 100, and the bottom surface of the hook frame 24 is a step-like structure. The bottom surface of the hook frame 24 is a left bottom surface, a middle bottom surface and a right bottom surface from the horizontal left end to the horizontal right end. The left bottom surface is lower than the right bottom surface. The left bottom surface and the middle bottom surface are both inclined structures. The inclination angles of the left bottom surface and the middle bottom surface are adapted to the side surface of the steel cage. In a preferred embodiment, the hook frame is provided with a top surface frame to improve the connection strength and stability, and its top surface is a planar structure. In this way, the local warping of the side surface of the steel cage hooked by the arc hook can be attached to the bottom surface of the hook frame, reducing the degree of deformation and improving the connection stability.

[0038] Example 4

[0039] Based on any one of Examples 1-3, this embodiment has a single-side column structure, specifically as follows:

[0040] See also Figures 1-21 In order to assume that the high-altitude guide rail can adopt a hanging, double-sided column or single-sided column structure, and to solve the problem of unobstructed space in the workstation area, the frame 1 includes a column 11 and a corner bracket 12. Several columns 11 are evenly arranged longitudinally on the factory floor. Each column 11 is equipped with a corner bracket 12. The corner bracket 12 is protruding from the left side of the column 11. The guide rail 14 is longitudinally extended on the corner bracket and is welded or bolted to the corner bracket 12 using a U-shaped clamp 13. The guide rail 14 is directly above the tying frame 5. Among them, the columns and corner brackets can be made of steel round tubes or square tubes, etc., and are fixed to the ground by pre-embedded concrete or flanges with bolts. In this way, the guide rail protrudes from one side of the column above the workstation area and does not occupy the ground space of the workstation area.

[0041] In a preferred embodiment, the frame 1 further includes a connecting section. Each of the two columns is provided with a connecting section. The connecting section extends vertically from the top of each column and is capable of connecting to the roof of the factory building. Thus, the columns and connecting sections form a top column 11'. Both ends of the top column 11' are fixed to the floor and the roof of the factory building, which can improve the connection strength and stability.

[0042] Example 5

[0043] Based on any one of the embodiments 1-4, this embodiment has a steel cage structure, which is as follows:

[0044] See also Figures 1-21The steel cage needs to be turned upside down when loading, so it needs to be put down first. In order to solve the problem of placing the steel cage at the loading position, the handling device also includes a front frame 3. The front frame 3 is directly below the guide rail 14. The top surface of the front frame 3 is provided with an angle plate 31. The angle plate is V-shaped, and the openings of several angle plates extend horizontally (two are arranged in the middle as shown in the figure), and the openings of several angle plates extend longitudinally (four are arranged at both ends as shown in the figure). In this way, the steel cage can be placed with the support of the angle plate so that it can be loaded into the next process. The horizontal and vertical steel bars are used for support to increase the direct support surface.

[0045] Example 6

[0046] Based on any one of the embodiments 1-5, this embodiment has a descending limit structure, which is as follows:

[0047] See also Figures 1-21 To address the issue of monitoring the height limit of descent during material handling, the handling device also includes a limiter 26, which comprises a limiter pressure plate, a sliding sleeve, and a connecting rod that is mounted on the hook frame. Limiter pressure plates are arranged around the bottom surface of the hook frame 24. The limiter pressure plates protrude from the bottom surface of the hook frame and are slidably mounted on the bottom surface of the hook frame 24, as shown in the figure, via the sliding sleeve. In this way, the limiter pressure plates can slide up and down, moving upward after contacting the steel cage. Height limit monitoring can be achieved through visual inspection. Multiple limiter pressure plates are arranged around the perimeter to form a monitoring surface, preventing the hook frame from tilting and causing insufficient descent height. Of course, in other embodiments, existing detection equipment such as laser marking or distance sensors can be used to achieve positioning and limit.

[0048] As described in the aforementioned embodiments 1-6, the present invention provides a device for transporting a New Jersey guardrail steel cage, comprising: a guide rail, a rail car (unpowered), a rail frame (upright column and corner frame), an electric hoist, a grab frame (hook frame), a gripper (arc hook), and a plurality of pillars arranged vertically in sequence. A crossbar frame (corner frame) is arranged on each pillar. The guide rail is mounted on the crossbar frame. The rail car is slidably connected to the guide rail. An electric hoist is provided on the rail car, and a grab frame is hung on its hook. A gripper is provided at the bottom of the grab frame. The gripper is driven up and down by the electric hoist, and the steel cage is grasped by the gripper. The grab frame is manually grasped and dragged or pushed to a position above the rail trolley, and then driven down by the electric hoist, and the steel cage is placed on the rail trolley or loading position. Laser lines can also be used to assist workers in positioning, so as to lift or lower the electric hoist into place to avoid lifting too high or lowering too low. A powered rail car can also be used, and can be started and stopped manually or with the help of laser lines to assist workers in positioning, so as to move it to a position above the rail trolley. Specifically, there are three cradles on either side of the front frame (or rail trolley 4), one on the left and two on the right. After the steel cage is tied, the worker drags the grab frame and pulls the rail car to the top of the cradle and steel cage. The worker then operates the electric hoist to lower it from the preparation position to the grabbing position (using a laser line to assist the worker in positioning). The worker activates the gripper to clamp the steel cage, activates the electric hoist to lift it, and drags it to the rail trolley station. The worker then operates the electric hoist to lower it to the release position (using a laser line to assist the worker in positioning). The gripper releases the steel cage, and the worker operates the electric hoist to raise it to the preparation position (using a laser line to assist the worker in positioning). The worker then releases the gripper to release the steel cage, and operates the electric hoist to raise it to the preparation position (using a laser line to assist the worker in positioning). This completes the material handling process.

[0049] See also Figures 1-19 As described in the aforementioned embodiments 1-6, the utility model is a transport device for a New Jersey guardrail steel cage, which includes a technical solution for a steel cage grabbing mechanism. A specific example is the grabbing mechanism of the New Jersey guardrail steel cage, which includes a telescopic rod, a hook frame and a rotating hook, etc. It controls the telescopic rod to drive the arc hook to rotate outward or inward at a certain angle, and can hook the steel cage below to achieve grabbing. I will not go into details here.

[0050] It should be pointed out that the examples of the above embodiments can be preferably combined with one or more of them according to actual needs, and multiple examples use a set of drawings to illustrate the combined technical features, which will not be explained one by one here.

[0051] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction.

[0052] The above description is a detailed description and illustration of the preferred embodiments of the present invention, but these descriptions are not intended to limit the scope of protection claimed by the present invention. All equivalent changes or modifications completed under the technical teachings suggested by the present invention should fall within the scope of patent protection covered by the present invention.

Claims

1. A steel cage grabbing mechanism comprising a telescopic rod, characterized in that: It also includes a hook rack and a rotating hook, wherein rotating hooks are respectively provided at both ends of the hook rack, and the rotating hook includes a hook shaft, an arc hook and a rocker arm. The hook shaft is rotatably arranged on the hook rack, and the hook shaft is provided with at least two circumferentially extending arc hooks, and the hook shaft is provided with a radially extending rocker arm. The two ends of the telescopic rod are respectively hinged to the rocker arms of the two rotating hooks, and the arc hook can rotate outward or inward at a certain angle when the telescopic rod is telescopically driven.

2. The steel cage grabbing mechanism according to claim 1, characterized in that: The rotary hook further comprises a support and a bearing. The hook shaft is arranged to extend longitudinally, and both ends of the hook shaft are arranged on the hook frame through the bearing and the support.

3. The steel cage grabbing mechanism according to claim 1, characterized in that: The arc hook is an elliptical arc-shaped structure at the long axis end. The hook head of the arc hook can be rotated between the top rod and the bottom rod of the hook frame, and the top rod and the bottom rod are parallel to the hook axis.

4. The steel cage grabbing mechanism according to claim 1, characterized in that: The bottom surface of the hook frame is smaller than or equal to the side surface of the steel cage, and the bottom surface of the hook frame is a step-like structure. The bottom surface of the hook frame is a left bottom surface, a middle bottom surface and a right bottom surface from the horizontal left end to the horizontal right end. The left bottom surface is lower than the right bottom surface. The left bottom surface and the middle bottom surface are both inclined structures. The inclination angles of the left bottom surface and the middle bottom surface are adapted to the side surface of the steel cage; wherein, the top surface of the hook frame is a planar structure.

5. The steel cage grabbing mechanism according to claim 1, characterized in that: The telescopic rod is an electric push rod, a cylinder or a hydraulic cylinder. The telescopic rod is equipped with a controller, and the controller is electrically connected to the lifting mechanism.

6. A New Jersey guardrail steel cage handling device, comprising a stand, guide rails, a railcar, and a lifting mechanism, wherein the stand is provided with a guide rail, the guide rail being arranged at a certain height above the ground and extending longitudinally, the guide rail being slidably connected to the railcar, and the railcar being provided with a lifting mechanism, the lifting mechanism being configured and connected to a lifting rope and capable of being lifted and lowered by pulling the lifting rope; characterized in that: It also includes the grabbing mechanism according to any one of claims 1 to 5, wherein the lifting mechanism is connected to the four sides of the hook frame through a suspension rope.

7. The New Jersey guardrail steel cage handling device according to claim 6, characterized in that: The lifting mechanism is a hand chain hoist or an electric hoist, the rail car is provided with a hanging seat, the hanging seat is provided with a hanging hole, the upper hook of the hand chain hoist or the electric hoist is hooked in the hanging hole, and at least 4 lifting rings are provided around the top surface of the hook frame. The lower hook of the hand chain hoist or the electric hoist is connected to the upper end of the lifting rope, and the lifting rope is equipped with at least 4 lower ends and they are respectively connected to at least 4 lifting rings.

8. The New Jersey guardrail steel cage handling device according to claim 6, characterized in that: The frame includes columns and angle brackets. Several columns are evenly arranged longitudinally on the factory floor. Each column is equipped with an angle bracket. The angle bracket protrudes on the left side of the column. The guide rail extends longitudinally on the angle bracket, and the guide rail is directly above the tyre frame. The frame also includes a top section. Every two columns are provided with a top section. The top of the column is vertically extended with a top section, and the top section can be connected to the top of the factory.

9. The New Jersey guardrail steel cage handling device according to claim 8, characterized in that: The vehicle also includes a front frame, which is located directly below the guide rail. A V-shaped angle plate is provided on the top surface of the front frame. The openings of several angle plates extend horizontally, and the openings of several angle plates extend longitudinally.

10. The New Jersey guardrail steel cage handling device according to claim 6, characterized in that: It also includes a limiter, which is used to detect the lifting height of the lifting mechanism; wherein the limiter includes a limit pressure plate, and the limit pressure plates are arranged around the bottom surface of the hook frame respectively. The limit pressure plates protrude from the bottom surface of the hook frame and can be slid up and down on the bottom surface of the hook frame.

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