Automatic loading and unloading clamp for prestressed pipe pile

Abstract

The utility model discloses a prestressed pipe pile automatic loading and unloading clamp, including electric control device and a pair of grab hook, the grab hook includes fixed base, the hook of rotatable installation on the bottom surface of fixed base, be used for driving the drive mechanism of hook rotation and be used for the position adjusting mechanism of adjusting the transverse position of hook, electric control device is connected with drive mechanism, position adjusting mechanism respectively. The utility model discloses adopts automation control, improves the efficiency of pipe pile hoisting while also improving the security, and the utility model discloses simple and compact structure, stable and reliable, easy operation, and operating personnel only need simple training to master.

Description

Technical Field

[0001] This utility model belongs to the field of prestressed concrete pipe pile production and manufacturing, and in particular relates to an automatic loading and unloading clamp for prestressed pipe piles. Background Technology

[0002] In the existing prestressed concrete pipe pile production process, hooks installed on overhead cranes are usually used to lift the pipe piles. However, the hooks may loosen during the lifting process, posing a safety risk. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic loading and unloading fixture for prestressed pipe piles that is simple and compact in structure, stable and reliable, easy to operate, improves safety, and enhances the efficiency of pipe pile hoisting.

[0004] The purpose of this utility model is achieved through the following technical measures: an automatic loading and unloading clamp for prestressed pipe piles, characterized in that it includes an electrical control device and a pair of hooks, wherein the hooks include a fixed base, a hook rotatably mounted on the bottom surface of the fixed base, a drive mechanism for driving the hooks to rotate, and an adjustment mechanism for adjusting the lateral position of the hooks, and the electrical control device is connected to the drive mechanism and the adjustment mechanism respectively.

[0005] This invention adopts automated control, which improves safety and efficiency in pipe pile hoisting. Moreover, this invention has a simple and compact structure, is stable and reliable, and is easy to operate. Operators only need simple training to master it.

[0006] The present invention describes multiple hooks arranged side by side on a fixed base.

[0007] The fixing base of this utility model includes a box-type base body with an open lower end and multiple hook fixing frames arranged in parallel. A connecting rod is provided on the base body, spanning its interior. The hook fixing frame consists of an upper vertical connecting part and a lower longitudinal mounting part. The vertical connecting part is located inside the base body and is adapted to the internal space of the base body in the longitudinal direction. The vertical connecting part is slidably mounted on the connecting rod. A first cylinder is provided on the connecting rod. The first push rod of the first cylinder extends along the length direction of the connecting rod and is connected to the vertical connecting part to form the adjustment mechanism. The longitudinal mounting part is an elongated shell with an open front end and is located below the base body. The upper end of the hook is hinged to the front end of the longitudinal mounting part. The driving mechanism adopts a second cylinder. The second cylinder is located inside the longitudinal mounting part and behind the hook. The second push rod of the second cylinder is perpendicular to the hinge axis of the hook, and the end of the second push rod is connected to the upper push-pull arm of the hook with a pin.

[0008] The bottom surface of the longitudinal mounting part of this utility model is an arc-shaped plate that can fit against the outer wall surface of the pipe pile.

[0009] The fixed base of this utility model includes a parallel frame, one end of which is connected to the rear outer wall of the base body, and the other end extends horizontally along the longitudinal direction, with the parallel frame located directly above the longitudinal mounting part.

[0010] The electronic control device of this utility model includes a controller, a solenoid valve and an air compressor. The solenoid valve is installed on the top surface of the base and is located on the pipeline between the air compressor and the first cylinder and the second cylinder respectively. The controller is connected to the solenoid valve and the air compressor.

[0011] This utility model has a camera for monitoring the movement of the hook on the front side of the top of the base body, and the camera is connected to the controller; the camera is a fisheye camera.

[0012] The hook described in this utility model is an L-shaped right-angle hook.

[0013] The hook of this utility model is composed of an inclined section, a vertical section and a horizontal section connected sequentially from top to bottom, and the included angle α between the inclined section and the vertical section is 140 to 160°.

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] (1) This utility model adopts automated control, which improves safety and efficiency of pipe pile hoisting. Moreover, this utility model has a simple and compact structure, is stable and reliable, and is easy to operate. Operators only need simple training to master it.

[0016] (2) This utility model has strong safety. The force center point of the hook is designed according to the hooking direction offset, so the hook will not loosen even when the power and gas are cut off.

[0017] (3) This utility model has a simple and sturdy structure, is impact-resistant, not easily damaged, and has low maintenance costs.

[0018] (4) This utility model is easy to connect with on-site vehicle modifications and does not require reporting to the Special Equipment Inspection Institute.

[0019] (5) This utility model is suitable for hoisting various models and quantities of pipe piles, and the specifications and quantities can be switched with simple operation.

[0020] (6) This utility model features adaptive orientation alignment, facilitating hook lifting of piles. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is the main perspective view of this utility model;

[0023] Figure 2 This is the left perspective view of this utility model;

[0024] Figure 3 This is a top perspective view of this utility model;

[0025] Figure 4 This is a structural schematic diagram of the hook of this utility model.

[0026] In the diagram: 1-Hook, 2-Hook, 3-Base, 4-Connecting rod, 5-Vertical connection part, 6-Longitudinal mounting part, 7-Hinge shaft, 8-Second cylinder, 9-Second push rod, 10-First cylinder, 11-Camera, 12-Arc plate, 13-Parallel frame, 14-Solenoid valve, 15-First push rod, 16-Inclined section, 17-Vertical section, 18-Horizontal section, 19-Push-pull arm. Detailed Implementation

[0027] like Figures 1-4 As shown, this utility model discloses an automatic loading and unloading fixture for prestressed pipe piles, including an electrical control device and a pair of grab hooks 1. Each grab hook 1 includes a fixed base, a hook 2 rotatably mounted on the bottom surface of the fixed base, a drive mechanism for driving the hook 2 to rotate, and an adjustment mechanism for adjusting the lateral position of the hook 2. The electrical control device is connected to the drive mechanism and the adjustment mechanism respectively.

[0028] The hook 2 is an L-shaped right-angle hook, which consists of an inclined section 16, a vertical section 17 and a horizontal section 18 connected sequentially from top to bottom. The angle α between the inclined section 16 and the vertical section 17 is 140 to 160°. In this embodiment, α is 146°. The force center point O (hinged point) of the hook 2 is designed according to the hooking direction offset to ensure that the hook will not detach as long as the load is being lifted, even if the power and gas are cut off.

[0029] In this embodiment, there are three hooks 2 arranged side by side on the fixed base. The electrical control device can control the adjusting mechanism to adjust the lateral position of the hooks 2, and can control the drive mechanism to drive each hook 2 to rotate. In this embodiment, the hook 2 in the middle position is fixed, while the positions of the hooks 2 on both sides can be adjusted to accommodate different specifications of pipe piles, including pipe piles with diameters of Φ300, Φ400, Φ500, and Φ600.

[0030] In this embodiment, the fixing base includes a rectangular box-type base 3 with an open lower end, multiple parallel fixing frames and parallel frames 13, and a connecting rod 4 spanning its interior on the base 3. The fixing frame consists of an upper vertical connecting part 5 and a lower longitudinal mounting part 6. The vertical connecting part 5 is a cylindrical body with a rectangular cross-section. The vertical connecting part 5 is located inside the base 3 and is longitudinally adapted to the internal space of the base. The vertical connecting part 5 is slidably mounted on the connecting rod 4. A first cylinder 10 is provided on the connecting rod 4. The first push rod 15 of the first cylinder 10 moves along... The connecting rod 4 extends along its length and connects to the vertical connecting part 5 to form an adjusting mechanism; the longitudinal mounting part 6 is an elongated shell with an open front end and is located below the base 3. The upper end of the hook 2 is hinged to the front end of the longitudinal mounting part 6. The driving mechanism uses a second cylinder 8, which is located inside the longitudinal mounting part 6 and behind the hook 2. The second push rod 9 of the second cylinder 8 is perpendicular to the hinge shaft 7 of the hook 2. The end of the second push rod 9 is connected to the upper push-pull arm 19 of the hook 2 with a pin, and the second push rod 9 and the push-pull arm 19 can rotate relative to each other. The bottom surface of the longitudinal mounting part 6 is an arc-shaped plate 12 that fits against the outer wall of the pipe pile. One end of the parallel frame 13 is connected to the rear outer wall of the base 3, and the other end extends horizontally along the longitudinal direction, with the parallel frame 13 located directly above the longitudinal mounting part 6.

[0031] A camera mounting plate 16 is provided on the front side of the top of the base 3, and a camera 11 for monitoring the movement of the hook 2 is provided on the lower surface of the camera mounting plate 16. The camera 11 is specifically a fisheye camera.

[0032] The electronic control device includes a controller, a solenoid valve 14 and an air compressor. The solenoid valve 14 is located on the top surface of the base 3 and on the pipeline between the air compressor and the first cylinder 10 and the second cylinder 8 respectively. The controller is connected to the solenoid valve 14, the air compressor and the camera 11.

[0033] The working principle of this utility model is as follows: Two grab hooks are hung on the crane, with the seat of one hook connected to the crane's hook via a chain. A counterweight and wire rope are connected to the parallel frame and the crane trolley, and concealed within a protective bar (existing technology). When the grab hooks swing during crane operation, the counterweight tightens the wire rope, keeping the grab hooks parallel to the crane beam, facilitating grabbing and release. An air compressor provides the pressure required for the grab hooks to operate. First, the specifications are selected by controlling the solenoid valve of the controller to change the stroke of the first cylinder, driving the hook to move laterally to switch specifications for clamping different sizes of pipe piles. Then, the controller controls the solenoid valve to change the stroke of the second cylinder to push and pull the hook, causing it to rotate around the hinge axis and hook into the end hole of the pipe pile to grab it or release it from the hole. A fisheye camera is installed above the hooks, allowing the operator to observe the grabbing process from the cab.

[0034] The technical parameters of this utility model are as follows:

[0035] 1. Power supply: AC 220V, 50Hz.

[0036] 2. Air pressure: 0.4-0.7MPa.

[0037] 3. Power: ≤5KW.

[0038] 4. Applicable pipe pile specifications: Φ300, Φ400, Φ500, Φ600.

[0039] 5. External dimensions: 2000mm×1200mm×1200mm (length×width×height).

[0040] 6. Weight: Approximately 500 kg.

[0041] The operation process of this utility model is as follows:

[0042] 1. Press the crane start button to power on the air compressor. Once the pressure rises to >0.4MPa, the automatic hook will start working normally.

[0043] 2. Rotate the specification selection knob to select the specification and quantity of the pipe piles to be hoisted.

[0044] 3. Align the moving trolley with the pipe pile below.

[0045] 4. Adjust the position of the trolley so that one of the grab hooks is aligned with one end of the pipe pile. The center hole of the pipe pile can be seen through the camera.

[0046] 5. First, lower one of the grab hooks. When the arc-shaped plate of the grab hook is suspended on the outer wall of the pipe pile, rotate the grab knob. When the hook is fully hooked into the pipe pile hole, raise the grab hook. Stop raising the hook when it is under force.

[0047] 6. Repeat steps 4-5 on the other hook. Once both hooks have hooked the pipe pile, switch the crane to lift synchronously and hoist the pipe pile to the designated position.

[0048] 7. Lower the grab hooks, place the pipe pile in the required position, and then reset the two grab knobs to automatically reset the hooks on both sides and detach them from the pipe pile.

[0049] 8. Raise the grab hook and repeat steps 2-7 to hoist the pipe pile.

[0050] The embodiments of this utility model are not limited to this. Based on the above content of this utility model, and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, the drive mechanism, the adjustment mechanism and the number of hooks of this utility model may have other embodiments. Therefore, this utility model can also be modified, replaced or changed in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. An automatic loading and unloading clamp for prestressed concrete pipe piles, characterized in that: The device includes an electronic control unit and a pair of hooks. Each hook includes a fixed base, a hook rotatably mounted on the bottom surface of the fixed base, a drive mechanism for rotating the hooks, and an adjustment mechanism for adjusting the lateral position of the hooks. The electronic control unit is connected to both the drive mechanism and the adjustment mechanism. Multiple hooks are arranged side-by-side on the fixed base. The fixed base includes a box-shaped body with an open lower end and multiple parallel-arranged mounting frames. A connecting rod spanning the interior of the body is provided. Each mounting frame consists of an upper vertical connecting part and a lower longitudinal mounting part. The vertical connecting part is located within the body and longitudinally adapts to the internal space of the body. The connecting part is slidably mounted on the connecting rod. A first cylinder is provided on the connecting rod. The first push rod of the first cylinder extends along the length of the connecting rod and is connected to the vertical connecting part to form the adjusting mechanism. The longitudinal mounting part is an elongated shell with an open front end and is located below the seat. The upper end of the hook is hinged to the front end of the longitudinal mounting part. The driving mechanism adopts a second cylinder. The second cylinder is located in the longitudinal mounting part and behind the hook. The second push rod of the second cylinder is perpendicular to the hinge axis of the hook, and the end of the second push rod is hinged to the upper end of the hook. The hook is an L-shaped right-angle hook.

2. The automatic loading and unloading fixture for prestressed concrete pipe piles according to claim 1, characterized in that: The fixed base includes a parallel frame, one end of which is connected to the rear outer wall of the base body, and the other end extends horizontally along the longitudinal direction, with the parallel frame located directly above the longitudinal mounting part.

3. The automatic loading and unloading clamp for prestressed pipe piles according to claim 2, characterized in that: The electronic control device includes a controller, a solenoid valve, and an air compressor. The solenoid valve is located on the top surface of the base and on the pipeline between the air compressor and the first cylinder and the second cylinder, respectively. The controller is connected to the solenoid valve and the air compressor.

4. The automatic loading and unloading fixture for prestressed concrete pipe piles according to claim 3, characterized in that: The bottom surface of the longitudinal mounting part is an arc-shaped plate that can fit against the outer wall of the pipe pile.

5. The automatic loading and unloading fixture for prestressed concrete pipe piles according to claim 4, characterized in that: A camera for monitoring the movement of the hook is provided on the front top of the seat, and the camera is connected to the controller.

6. The automatic loading and unloading fixture for prestressed concrete pipe piles according to claim 5, characterized in that: The camera is a fisheye camera.

7. The automatic loading and unloading fixture for prestressed concrete pipe piles according to claim 6, characterized in that: The hook is composed of an inclined section, a vertical section and a horizontal section connected sequentially from top to bottom, and the included angle α between the inclined section and the vertical section is 140~160°.

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