Unhooking device for high-strain free drop hammer

Abstract

The unhooking device comprises a concave frame, an installation frame, a main shaft and a transverse plate, a limiting seat is fixedly installed at the lower right end of the concave frame, a hanging ring is fixedly installed in the center of the top of the concave frame, an L-shaped frame is fixedly installed on the outer side of the concave frame, and a hook is fixedly installed on the L-shaped frame. A first screw rod and a second screw rod are sequentially and rotationally connected to the inner side of the L-shaped frame from front to back, a double-shaft motor is fixedly installed at one end of the first screw rod, a first screw block is in threaded connection with the outer side of the first screw rod, a second screw block is in threaded connection with the outer side of the second screw rod, and a first clamping plate is fixedly installed on the lower side of the first screw block; and a first ejector rod is fixedly mounted on the inner side of the first clamping plate. According to the utility model, the transverse plate is used as a limiting mechanism, so that the situation that equipment is hung on the transverse plate to cause unhooking failure is avoided when the constraint on the heavy hammer is relieved, and the equipment is unhooked stably, thereby improving the safety and reliability of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of unhooking devices, in particular to an unhooking device for a high-strain free-falling hammer. Background Art

[0002] During the acceptance of pile foundations, the high strain method is often used to test the bearing capacity and integrity of a single pile. During the test, a heavy hammer needs to be lifted by a crane and raised to a certain height to allow it to fall freely and hit the top of the pile. In previous operations, after the heavy hammer was lifted, the operator needed to separate the heavy hammer from the unhooker at close range.

[0003] The existing unhooking device has the following defects in daily use:

[0004] 1. Most of the current unhooking devices use an arc-shaped single unhooking, which lifts the heavy hammer and releases the constraint on the heavy hammer by opening the single unhooking. In the actual operation process, it is easy for the equipment to be hung in front of the single unhooking, causing unhooking failure. It is easy for the unhooking to be incomplete during the operation, which poses certain safety hazards and leads to low reliability.

[0005] 2. When the existing unhooking device is used to test the high strain bearing capacity of the pile foundation, it is necessary to manually remove the heavy hammer from the unhooking device. Manual operation has the following shortcomings: the separation speed of the heavy hammer and the hook is slow, the heavy hammer will swing together with the swing of the unhooking under manual operation, and the heavy hammer will be eccentric, resulting in inaccurate test results. Therefore, we propose a new type of unhooking device for high strain free-falling hammers. Utility Model Content

[0006] The utility model provides a decoupling device for a high-strain free-falling hammer to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A decoupling device for a high-strain free-falling hammer comprises a recessed frame, a mounting frame is fixedly installed on the lower left end of the recessed frame, a main shaft is fixedly installed on the inner side of the mounting frame, a cross plate is rotatably connected to the outer side of the main shaft, a limit seat is fixedly installed on the lower right end of the recessed frame, a hanging ring is fixedly installed at the center of the top of the recessed frame, an L frame is fixedly installed on the outer side of the recessed frame, a first screw rod and a second screw rod are rotatably connected to the inner side of the L frame from front to back in sequence, a double-axis motor is fixedly installed on one end of the first screw rod, a first screw block is threadedly connected to the outer side of the first screw rod, a second screw block is threadedly connected to the outer side of the second screw rod, a first clamping plate is fixedly installed on the lower side of the first screw block, a first push rod is fixedly installed on the inner side of the first clamping plate, a second clamping plate is fixedly installed on the lower side of the second screw block, a second push rod is fixedly installed on the inner side of the second clamping plate, a telescopic spring is fixedly installed on the inside of the cross plate, a clamping rod is fixedly installed on one end of the telescopic spring, and a clamping groove is provided on the inner side of the limit seat.

[0009] As a further improvement of the technical solution: a guide rod is arranged directly above the first screw rod and the second screw rod, wherein a guide block is slidably connected to the outer side of the guide rod, and the guide block is fixedly mounted on the first screw block and the second screw block.

[0010] As a further improvement of the technical solution: the clamping slot and the second push rod are both on the same horizontal line.

[0011] As a further improvement of the technical solution: two clamping rods are arranged inside the cross plate, wherein the clamping rods are located at the front and rear sides of the cross plate.

[0012] As a further improvement of the technical solution: the mounting frame and the limiting seat are on the same horizontal plane.

[0013] As a further improvement of the technical solution: one end of the first screw is fixedly mounted on the front output end of the dual-axis motor, and one end of the second screw is fixedly mounted on the rear output end of the dual-axis motor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The unhooking device uses a horizontal plate as a limiting mechanism. When the constraint on the heavy hammer is released, the device will not be hung on the horizontal plate, causing unhooking failure, making the unhooking of the device stable, thereby improving the safety and reliability of the equipment;

[0016] 2. The concave frame, mounting frame, main shaft, cross plate, telescopic spring, limit seat, clamping rod, clamping slot, dual-axis motor, first screw, second screw, first screw block, second screw block, first clamping plate, second clamping plate, first push rod, second push rod and clamping slot are used together to realize automatic unhooking, and no manual unhooking is required, which speeds up the separation speed of the weight and the hook, avoids the situation that the weight swings along with the unhooking process, ensures that the weight drops vertically for testing, and ensures the accuracy of the test results.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the first splint structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the second splint structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the card slot structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the telescopic spring structure of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Recessed frame; 2. Mounting frame; 3. Spindle; 4. Horizontal plate; 5. Limit seat; 6. Hanging ring; 7. L frame; 8. First screw rod; 9. Second screw rod; 10. Dual-axis motor; 11. First screw block; 12. Second screw block; 13. First clamping plate; 14. First push rod; 15. Second clamping plate; 16. Second push rod; 17. Telescopic spring; 18. Clamping rod; 19. Clamping slot. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] See also Figures 1 to 5 In the embodiment of the utility model, a decoupling device for a high-strain free-falling hammer comprises a recessed frame 1, a mounting frame 2 is fixedly installed at the lower left end of the recessed frame 1, a main shaft 3 is fixedly installed on the inner side of the mounting frame 2, a horizontal plate 4 is rotatably connected to the outer side of the main shaft 3, a limited position seat 5 is fixedly installed at the lower right end of the recessed frame 1, a hanging ring 6 is fixedly installed at the center of the top of the recessed frame 1, an L frame 7 is fixedly installed on the outer side of the recessed frame 1, a first screw rod 8 and a second screw rod 9 are rotatably connected to the inner side of the L frame 7 from front to back, and a double-axis motor is fixedly installed at one end of the first screw rod 8 10. The outer side of the first screw rod 8 is threadedly connected to the first screw block 11, the outer side of the second screw rod 9 is threadedly connected to the second screw block 12, the lower side of the first screw block 11 is fixedly installed with a first clamping plate 13, the inner side of the first clamping plate 13 is fixedly installed with a first push rod 14, the lower side of the second screw block 12 is fixedly installed with a second clamping plate 15, the inner side of the second clamping plate 15 is fixedly installed with a second push rod 16, the interior of the cross plate 4 is fixedly installed with a telescopic spring 17, one end of the telescopic spring 17 is fixedly installed with a clamping rod 18, and the inner side of the limit seat 5 is provided with a clamping groove 19.

[0030] See also Figure 1-3A guide rod is arranged directly above the first screw rod 8 and the second screw rod 9, wherein a guide block is slidably connected to the outer side of the guide rod, and the guide block is fixedly mounted on the first screw block 11 and the second screw block 12. By using the guide rod and the guide block in combination, the first screw block 11 and the second screw block 12 can move horizontally synchronously with the first screw rod 8 and the second screw rod 9, but will not rotate with the first screw rod 8 and the second screw rod 9, thereby ensuring that the first screw block 11 and the second screw block 12 move more stably on the first screw rod 8 and the second screw rod 9 respectively.

[0031] See also Figure 1-5 The slot 19 and the first push rod 14 and the second push rod 16 are all on the same horizontal line. By arranging the slot 19 and the first push rod 14 and the second push rod 16 on the same horizontal line, the first push rod 14 and the second push rod 16 can be easily inserted into the slot 19.

[0032] See also Figure 1 and Figure 5 There are two clamping rods 18 arranged inside the horizontal plate 4, wherein the clamping rods 18 are located at the front and rear sides of the horizontal plate 4. By using the clamping rods 18 and the clamping slots 19 in combination, the horizontal plate 4 can be quickly limited and fixed.

[0033] See also Figure 1 and Figure 5 The mounting frame 2 and the limiting seat 5 are on the same horizontal plane. By arranging the mounting frame 2 and the limiting seat 5 on the same horizontal plane, it is convenient to complete the limiting fixation of the horizontal plate 4.

[0034] See also Figure 1-3 One end of the first screw 8 is fixedly mounted on the front output end of the dual-axis motor 10, and one end of the second screw 9 is fixedly mounted on the rear output end of the dual-axis motor 10. The dual-axis motor 10 provides power to drive the first screw 8 and the second screw 9 to rotate.

[0035] The working principle of the utility model is: when using the equipment, when it is necessary to hang the heavy hammer, directly place the traction rope of the heavy hammer into the recessed frame 1, under the action of the mounting frame 2 and the main shaft 3, the cross plate 4, and synchronously press the card rod 18 inward, the telescopic spring 17 is compressed, so that the card rod 18 retracts into the cross plate 4, and the right end of the cross plate 4 is rotated to the limit seat 5. After the right end of the cross plate 4 is rotated to the specified position in the limit seat 5, under the action of the telescopic spring 17, the telescopic spring 17 is restored, so that the card rod 18 pops out into the card slot 19, completing the fixation of the cross plate 4, and limiting the traction rope of the heavy hammer in the equipment, and then using the hanging ring 6 to connect the external lifting mechanism, using the lifting mechanism to lift the entire heavy hammer for testing, when the heavy hammer is lifted to the specified position, start the dual-axis motor 10, and the dual-axis motor 10 drives the first A screw rod 8 and a second screw rod 9 rotate, and the first screw rod 8 and the second screw rod 9 drive the first screw block 11 and the second screw block 12 to approach each other, and the first screw block 11 drives the first clamping plate 13 to move inward, and the second screw block 12 drives the second clamping plate 15 to move inward, and the first clamping plate 13 drives the first push rod 14 to move synchronously, and the second clamping plate 15 drives the second push rod 16 to move synchronously. When the first push rod 14 and the second push rod 16 move to the slot 19, they will continue to move inward and squeeze the clamping rod 18 inward, so that the clamping rod 18 is out of the slot. At this time, the cross plate 4 releases the limit and completes the unhooking operation. The equipment does not require manual and laborious unhooking operation, so that the separation speed of the weight and the hook is fast, and the situation that the weight swings along with the unhooking process is avoided, ensuring that the weight drops vertically for testing and ensuring the accuracy of the test results.

[0036] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A decoupling device for a high-strain free-falling hammer, characterized in that: The invention comprises a recessed frame (1), a mounting frame (2) is fixedly mounted on the lower left end of the recessed frame (1), a main shaft (3) is fixedly mounted on the inner side of the mounting frame (2), a horizontal plate (4) is rotatably connected to the outer side of the main shaft (3), a limited position seat (5) is fixedly mounted on the lower right end of the recessed frame (1), a hanging ring (6) is fixedly mounted at the center of the top of the recessed frame (1), an L frame (7) is fixedly mounted on the outer side of the recessed frame (1), a first screw rod (8) and a second screw rod (9) are rotatably connected to the inner side of the L frame (7) in sequence from front to back, a double-axis motor (10) is fixedly mounted on one end of the first screw rod (8), and the outer side of the first screw rod (8) is fixedly mounted on the outer side of the first screw rod (8). A first screw block (11) is threadedly connected, and the outer side of the second screw rod (9) is threadedly connected to a second screw block (12), a first clamping plate (13) is fixedly installed on the lower side of the first screw block (11), a first push rod (14) is fixedly installed on the inner side of the first clamping plate (13), a second clamping plate (15) is fixedly installed on the lower side of the second screw block (12), and a second push rod (16) is fixedly installed on the inner side of the second clamping plate (15), a telescopic spring (17) is fixedly installed inside the cross plate (4), a clamping rod (18) is fixedly installed on one end of the telescopic spring (17), and a clamping groove (19) is opened on the inner side of the limit seat (5).

2. A decoupling device for a high strain free-falling hammer according to claim 1, characterized in that: A guide rod is arranged directly above the first screw rod (8) and the second screw rod (9), wherein the outer side of the guide rod is slidably connected with a guide block, and the guide block is fixedly mounted on the first screw block (11) and the second screw block (12).

3. A decoupling device for a high strain free-falling hammer according to claim 1, characterized in that: The clamping groove (19) and the first push rod (14) and the second push rod (16) are all on the same horizontal line.

4. A decoupling device for a high strain free-falling hammer according to claim 1, characterized in that: Two clamping rods (18) are arranged inside the transverse plate (4), wherein the clamping rods (18) are located at the front and rear sides of the transverse plate (4).

5. A decoupling device for a high strain free-falling hammer according to claim 1, characterized in that: The mounting frame (2) and the limiting seat (5) are located on the same horizontal plane.

6. A decoupling device for a high strain free-falling hammer according to claim 1, characterized in that: One end of the first screw (8) is fixedly mounted on the front output end of the dual-shaft motor (10), and one end of the second screw (9) is fixedly mounted on the rear output end of the dual-shaft motor (10).

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