Quick change structure for vibratory hammer chuck of pile driver

Abstract

The utility model relates to the technical field of vibratory hammers, in particular to a pile driver vibratory hammer chuck quick-changing structure which comprises a main mounting plate, a connecting plate used for fixing a vibratory hammer chuck body is arranged below the main mounting plate, the bottom end of the main mounting plate is rotationally connected with an auxiliary mounting plate, and a quick-detaching mechanism used for quickly detaching the vibratory hammer chuck body is arranged on the connecting plate. The quick release mechanism comprises two L-shaped plates which are symmetrically connected to the top wall of the connecting plate in a sliding mode and matched with the auxiliary mounting plate, and the two L-shaped plates slide to make the two L-shaped plates move oppositely or oppositely; when the vibratory hammer chuck body and the pile driver are disassembled, the vibratory hammer chuck body and the pile driver can be quickly disassembled by firstly sliding the movable plate to relieve limiting of the two L-shaped plates, rotating the pawl to enable the ratchet wheel to rotate reversely and then reversely rotating the bidirectional screw to enable the two L-shaped plates to move oppositely, the whole disassembling process is simple in disassembling step, a power source is not needed, and the disassembling efficiency is improved. And therefore, the overall practicability of the equipment is improved, and workers can use the equipment conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of vibratory hammers, in particular to a quick-changing structure for a chuck of a vibratory hammer of a pile driver. Background Art

[0002] A vibratory hammer is a device that generates a strong exciting force to drive a pile into the ground after being driven. It is widely used in driving and pulling piles in various building foundations and municipal engineering projects. When the vibratory hammer is running, an even number of eccentric wheels rotate at high speed to generate a vibration force. This force causes the pile to produce a sinusoidal vertical vibration, forcing the soil around the pile to liquefy, displace, and move the soil layer. Under the action of the pile's own weight and the weight of the vibratory hammer, the pile is cut into the stratum.

[0003] In the prior art, there is a utility model patent with a publication (announcement) number of CN215715271 U and a name of a clamping structure for a side-clamped vibratory hammer, which includes a rotating device, an adjusting device, and a fixing structure; the rotating device includes a movable box, the top of the movable box is fixedly connected to a protective box, the inner top wall of the protective box is fixedly connected to a hydraulic motor, the output end of the hydraulic motor is fixedly connected to a rotating rod, the bottom end of the rotating rod is fixedly connected to a bearing plate, and the left and right sides of the protective box are fixedly connected to auxiliary devices; the clamping structure of the side-clamped vibratory hammer has the function of adjusting the angle, which can facilitate piling work at different angles, and when the metal pad contacts the vibratory hammer, the vibratory hammer is kept in a vertical state, so that the piling is straight and accurate, and at the same time, different sizes of the same type of vibratory hammers can be replaced through the above operation, which has the function of replacing different sizes of the same type of vibratory hammers, making the device more practical.

[0004] The device of this patent solves the problem that the clamping structure of the existing side-clamp vibratory hammer is inconvenient to adjust the angle. However, when disassembling the vibratory hammer chuck body, the device of this patent requires sufficient power supply to the stepper motor to complete the disassembly work. Before disassembly, it is necessary to manually check the power loss of the stepper motor in advance. The overall disassembly steps are relatively cumbersome, which is inconvenient for staff to disassemble it quickly. Utility Model Content

[0005] The utility model aims to provide a quick-change structure for a chuck of a vibration hammer of a pile driver.

[0006] The technical problem solved by the utility model is that the existing equipment needs to check the power consumption of the stepper motor in advance before disassembling the vibration hammer chuck body, and the overall disassembly steps are relatively complicated.

[0007] The utility model can be realized by the following technical scheme: a quick-change structure of a vibration hammer chuck of a pile driver comprises a main mounting plate, a connecting plate for fixing a vibration hammer chuck body is arranged below the main mounting plate, an auxiliary mounting plate is rotatably connected to the bottom end of the main mounting plate, a quick-release mechanism for quickly disassembling the vibration hammer chuck body is arranged on the connecting plate, the quick-release mechanism comprises two L-shaped plates symmetrically slidably connected to the top wall of the connecting plate and matched with the auxiliary mounting plate, and the two L-shaped plates are slid to make the two L-shaped plates move relative to or oppositely;

[0008] The inner cavity of the auxiliary mounting plate is provided with a limiting assembly for limiting the L-shaped plate. By using the limiting assembly to limit the L-shaped plate, the two L-shaped plates are close to the side walls of the auxiliary mounting plate, thereby facilitating the stability of the vibration hammer chuck body and the pile driver during installation.

[0009] A further technical improvement of the utility model is that: the inner cavity of the connecting plate is provided with a driving assembly that enables the two L-shaped plates to move relative to or oppositely, the driving assembly includes a bidirectional screw rotatably connected to the inner cavity of the connecting plate, and two sections of external threads with opposite thread rotation directions on the outer wall of the bidirectional screw are threadedly sleeved with screw sleeves fixedly connected to the L-shaped plate. The bidirectional screw is rotated so that the two sections of external threads with opposite thread rotation directions on it rotate synchronously, and the rotation of the bidirectional screw causes the screw sleeves on its threads to move relative to or oppositely.

[0010] A further technical improvement of the utility model is that the limit assembly includes a limit block symmetrically and elastically slidably connected to the inner cavity of the auxiliary mounting plate, the inner cavity of the L-shaped plate is provided with a receiving groove for accommodating the limit block, and the side of the limit block close to the receiving groove is arc-shaped, thereby facilitating the limit block to enter the inner cavity of the corresponding receiving groove in the shortest time.

[0011] A further technical improvement of the utility model is that a moving plate fixedly connected to the limit blocks is slidably connected to the outer wall of the auxiliary mounting plate, and sliding the moving plate causes the two limit blocks to slide synchronously.

[0012] A further technical improvement of the utility model is that a limiting member is provided on the outer wall of the connecting plate to prevent the bidirectional screw from reversing, the limiting member includes a ratchet fixedly connected to the outer wall of the bidirectional screw, the ratchet is rotatably connected to the connecting plate, and a pawl cooperating with the ratchet is rotatably connected to the outer wall of the connecting plate. When the bidirectional screw rotates, the ratchet fixedly connected thereto will rotate synchronously. Through the coordinated use of the ratchet and the pawl, the bidirectional screw can be prevented from reversing due to external vibration.

[0013] A further technical improvement of the utility model is that a connecting spring fixedly connected to the pawl is fixedly installed on the outer wall of the connecting plate and located on one side of the pawl. The connection spring is provided to help improve the stability of the pawl during movement.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. When the utility model disassembles the vibration hammer chuck body and the pile driver, firstly slide the moving plate to release the limit of the two L-shaped plates, then rotate the pawl to make the ratchet wheel reverse, and then reversely rotate the bidirectional screw to make the two L-shaped plates move in opposite directions, so that they can be quickly disassembled. The whole disassembly process is relatively simple, and no power supply is required, which is conducive to improving the overall practicality of the equipment and is convenient for the staff to use.

[0016] 2. When the utility model is installing the vibration hammer chuck body and the pile driver, the bidirectional screw can be rotated. When the bidirectional screw rotates, the two sections of external threads with opposite threads on it will rotate synchronously. At this time, the two screw sleeves sleeved on the outer wall of the bidirectional screw will move relative to each other, and the L-shaped plates fixedly connected to them are driven by the screw sleeves to move synchronously. The movement of the two L-shaped plates is convenient for clamping the two sides of the auxiliary mounting plate. At the same time, the elastic force of the extrusion spring can make the limit block enter the accommodating groove corresponding to the inner cavity of the L-shaped plate, so that the two L-shaped plates are conveniently close to the side walls of the auxiliary mounting plate, which is convenient for ensuring the stability of the two when installed. At the same time, the coordinated use of the ratchet and the pawl can prevent the bidirectional screw from reversing, thereby further ensuring the stability of the two when installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 It is a partial structural schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional view of the local structure of the utility model;

[0022] Figure 5 For this utility model Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure 6 It is a rear view structural schematic diagram of the utility model.

[0024] In the figure:

[0025] 1. Main mounting plate; 11. Servo motor;

[0026] 2. Connecting plate; 21. Inner groove; 22. Bidirectional screw; 23. Screw sleeve; 24. L-shaped plate; 25. Accommodating groove; 26. Rectangular groove; 27. Extrusion spring; 28. Limit block; 29. ​​Transmission column; 210. Moving plate; 211. Rotating handle; 212. Ratchet; 213. Ratchet pawl; 214. Connecting spring;

[0027] 3. Auxiliary mounting plate;

[0028] 4. Vibratory hammer chuck body. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-6 As shown, this embodiment provides a technical solution, a quick-change structure for a pile driver vibration hammer chuck, comprising a main mounting plate 1 fixedly connected to the pile driver, a servo motor 11 fixedly mounted on the bottom end of the main mounting plate 1, and an auxiliary mounting plate 3 fixedly connected to the output end of the servo motor 11.

[0031] A connecting plate 2 is provided at one end of the auxiliary mounting plate 3 away from the servo motor 11 , and a vibration hammer chuck body 4 is fixedly mounted at one end of the connecting plate 2 away from the auxiliary mounting plate 3 .

[0032] An inner groove 21 is provided in the inner cavity of the connecting plate 2, and a bidirectional screw 22 is rotatably connected between the two inner side walls of the inner groove 21 through a bearing. The side of the bidirectional screw 22 close to the end is provided with two sections of external threads with opposite thread rotation directions. Both sections of the external threads of the bidirectional screw 22 are threadedly sleeved with screw sleeves 23, and the screw sleeves 23 are slidably connected to the inner wall of the inner groove 21. One side of the connecting plate 2 close to the auxiliary mounting plate 3 is symmetrically slidably connected to two L-shaped plates 24 that cooperate with the auxiliary mounting plate 3.

[0033] The inner cavity of the auxiliary mounting plate 3 is symmetrically provided with at least two rectangular grooves 26, the inner wall of the rectangular groove 26 is fixedly connected with an extrusion spring 27, the inner cavity of the rectangular groove 26 is slidably connected with a limit block 28 fixedly connected to the extrusion spring 27, and the inner cavity of the L-shaped plate 24 is provided with an accommodating groove 25 for accommodating the limit block 28.

[0034] At least one transmission column 29 is fixedly connected to the outer wall of the limit block 28, and one end of the transmission column 29 away from the limit block 28 passes through the auxiliary mounting plate 3 and extends to the outside of the auxiliary mounting plate 3. One end of the transmission column 29 extending to the outside of the auxiliary mounting plate 3 is fixedly connected to a movable plate 210 that is slidably connected to the outer wall of the auxiliary mounting plate 3.

[0035] One end of the bidirectional screw 22 passes through the connecting plate 2 and extends to the outside of the connecting plate 2. The end of the bidirectional screw 22 extending to the outside of the connecting plate 2 is fixedly connected to a handle 211. A ratchet 212 rotatably connected to the outer wall of the connecting plate 2 is fixedly sleeved on the outer wall of the bidirectional screw 22 and close to the handle 211. A pawl 213 used in conjunction with the ratchet 212 is rotatably connected to the outer wall of the connecting plate 2. A connecting spring 214 fixedly connected to the outer wall of the ratchet 212 is fixedly installed on the outer wall of the connecting plate 2.

[0036] When the utility model is in use, the connecting plate 2 fixedly connected to the vibration hammer chuck body 4 is placed just below the auxiliary mounting plate 3 and the two are installed. During installation, the bidirectional screw rod 22 is rotated. When the bidirectional screw rod 22 rotates, the two sections of external threads on which the threads rotate in opposite directions will rotate synchronously. At this time, the two screw sleeves 23 sleeved on the outer wall of the bidirectional screw rod 22 will move relative to each other, and the screw sleeves 23 drive the L-shaped plates 24 fixedly connected thereto to move synchronously. The movement of the two L-shaped plates 24 is convenient for clamping the two sides of the auxiliary mounting plate 3. At the same time, the elastic force of the extrusion spring 27 can make the limit block 28 enter the accommodating groove 25 corresponding to the inner cavity of the L-shaped plate 24, so that the two L-shaped plates 24 are close to the side walls of the auxiliary mounting plate 3, which is convenient for ensuring the stability of the two during installation. At the same time, the coordinated use of the ratchet 212 and the pawl 213 can prevent the bidirectional screw rod 22 from reversing, thereby further ensuring the stability of the two during installation.

[0037] When disassembling the two, first slide the movable plate 210 to release the limit of the two L-shaped plates 24, then rotate the pawl 213 to allow the ratchet 212 to reverse, and then reversely rotate the bidirectional screw 22 to make the two L-shaped plates 24 move in opposite directions, and they can be quickly disassembled. The entire disassembly process has relatively simple disassembly steps and does not require the use of power, which is beneficial to improving the overall practicality of the equipment and is convenient for staff to use.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A quick-change structure for a vibratory hammer chuck of a pile driver, comprising a main mounting plate (1), a connecting plate (2) for fixing a vibratory hammer chuck body (4) is arranged below the main mounting plate (1), an auxiliary mounting plate (3) is rotatably connected to the bottom end of the main mounting plate (1), and the characteristics are: The connecting plate (2) is provided with a quick-release mechanism for quickly disassembling the vibration hammer chuck body (4), the quick-release mechanism comprising two L-shaped plates (24) symmetrically slidably connected to the top wall of the connecting plate (2) and matched with the auxiliary mounting plate (3), and the two L-shaped plates (24) are slid so as to make the two L-shaped plates (24) move relative to or in the opposite direction; The inner cavity of the auxiliary mounting plate (3) is provided with a limiting component for limiting the position of the L-shaped plate (24).

2. The quick-change structure for the chuck of a pile driver vibration hammer according to claim 1, characterized in that: The inner cavity of the connecting plate (2) is provided with a driving assembly for causing the two L-shaped plates (24) to move relative to or in opposite directions, and the driving assembly includes a bidirectional screw (22) rotatably connected to the inner cavity of the connecting plate (2), and two sections of external threads with opposite thread rotation directions on the outer wall of the bidirectional screw (22) are both threadedly sleeved with screw sleeves (23) fixedly connected to the L-shaped plates (24).

3. The quick-change structure for the chuck of a pile driver vibration hammer according to claim 1, characterized in that: The limiting assembly comprises a limiting block (28) symmetrically elastically slidably connected to the inner cavity of the auxiliary mounting plate (3); the inner cavity of the L-shaped plate (24) is provided with a receiving groove (25) for receiving the limiting block (28).

4. The quick-change structure for the chuck of a pile driver vibration hammer according to claim 1, characterized in that: A movable plate (210) fixedly connected to the limit blocks (28) is slidably connected to the outer wall of the auxiliary mounting plate (3), and the sliding movable plate (210) causes the two limit blocks (28) to slide synchronously.

5. The quick-change structure for the chuck of a pile driver vibration hammer according to claim 1, characterized in that: A limiting member for preventing the bidirectional screw (22) from reversing is arranged on the outer wall of the connecting plate (2), and the limiting member comprises a ratchet (212) fixedly connected to the outer wall of the bidirectional screw (22), the ratchet (212) being rotatably connected to the connecting plate (2), and a ratchet pawl (213) cooperating with the ratchet (212) being rotatably connected to the outer wall of the connecting plate (2).

6. The quick-change structure for the chuck of a pile driver vibration hammer according to claim 1, characterized in that: A connecting spring (214) fixedly connected to the ratchet (213) is fixedly installed on the outer wall of the connecting plate (2) and located on one side of the ratchet (213).

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