Electric well casing lowering device

Abstract

The utility model provides an electric well casing lowering device which is used in the technical field of construction engineering machinery. The device comprises a movable supporting frame, pay-off reels, a driving device and a bearing disc, the pay-off reels are arranged on the movable supporting frame in parallel at intervals, and the two ends of a steel wire rope are wound around the pay-off reels respectively; the driving end of the driving device is connected to the pay-off reel; the bearing disc is arranged between the pay-off reels through the steel wire rope, and the steel wire rope is movably connected to the bearing disc. The device is simple in structure, easy to manufacture and small in occupied space; the well casing can be rapidly lowered into a dewatering well, the labor intensity of workers is greatly reduced, the posture of the well casing is easy to control, the well wall cannot be damaged, and meanwhile the well casing lowering efficiency and the operation safety are improved.

Description

Technical Field

[0001] This utility model belongs to the field of construction machinery technology, and in particular relates to an electric well casing lowering device. Background Technology

[0002] In the construction industry, dewatering wells are commonly used to lower the water level inside and outside the foundation pit in areas with abundant groundwater, thereby maintaining the dryness and stability of the foundation soil. The construction of dewatering wells involves lowering the well casing section by section into the wellbore. The casing is typically made of concrete, with each section approximately 1-2 meters in length. Current technology usually employs manual labor or simple mechanical devices to complete the lowering of the casing, which presents problems such as complex operation, high labor intensity, low lowering efficiency, and a high risk of safety accidents. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an electric well casing lowering device, which reduces the labor intensity of well casing lowering operations and improves operational efficiency and safety.

[0004] The technical solution adopted in this utility model is: an electric well casing lowering device, comprising:

[0005] Movable support frame;

[0006] A wire reel is used for unwinding or winding a steel wire rope; two wire reels are arranged parallel to each other and spaced apart on the movable support frame, and the two ends of the steel wire rope are respectively wound around the wire reels.

[0007] A drive device is used to drive the wire reel to rotate; the drive end of the drive device is connected to the wire reel.

[0008] A support tray is used to support the well casing; the support tray is set between the wire ropes via the wire ropes, and the wire ropes are movably connected to the support tray.

[0009] Furthermore, a guide wheel is provided between the wire reel and the support tray, and the guide wheel is provided with a guide groove, and the wire rope is wound around the guide groove.

[0010] Furthermore, the bottom of the support tray is provided with a slot, and the wire rope is movably disposed in the slot; the slot is aligned with the centerline of the support tray.

[0011] Furthermore, the drive device is located on the side of the pay-off reel away from the guide wheel and is connected to the pay-off reel via a timing belt.

[0012] Furthermore, the two wire reels are connected by a timing belt.

[0013] Furthermore, the movable support frame includes two parallel crossbeams and several longitudinal supports disposed between the crossbeams, with the wire reel and the guide wheel respectively disposed on the crossbeams.

[0014] Furthermore, the movable support frame is equipped with detachable wheels.

[0015] Furthermore, the drive device and / or the wire reel are provided with a speed reduction switch for controlling the rotation speed of the wire reel.

[0016] Furthermore, it also includes a control device, which is electrically connected to the drive device.

[0017] The advantages and positive effects of this utility model are:

[0018] (1) It has a simple structure, is easy to manufacture, and occupies little space;

[0019] (2) The well pipe can be quickly lowered into the dewatering well, which greatly reduces the labor intensity of workers, makes it easy to control the posture of the well pipe, and will not cause damage to the well wall. At the same time, it also improves the efficiency of well pipe lowering and the safety of operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present invention;

[0021] Figure 2 This is a top view of a specific embodiment of the present invention;

[0022] Figure 3 This is a front view of a specific embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a pallet structure according to a specific embodiment of the present invention.

[0024] In the picture:

[0025] 1. Movable support frame; 2. Synchronous belt one; 3. Drive device; 4. Synchronous belt two; 5. Deceleration switch; 6. Wire rope; 7. Wire reel; 8. Guide wheel; 9. Wheel; 10. Control device; 11. Crossbeam; 12. Support plate; 13. Well casing; 14. Guide groove; 15. Slot. Detailed Implementation

[0026] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0027] like Figures 1-3As shown, this utility model proposes an electric well pipe lowering device for lowering the well pipe of a dewatering well into the dewatering well; the device includes a movable support frame 1, a wire reel 7, a drive device 3 and a support tray 12, and each part is described in detail below.

[0028] The movable support frame 1 is used to install the wire reel 7 and the drive device 3, and can be moved to the dewatering well where the well pipe 13 is to be lowered as needed, so that the support tray 12 is aligned with the wellhead of the dewatering well.

[0029] The wire feeding reel 7 is used for feeding or winding the wire rope 6; two wire feeding reels 7 are arranged parallel and spaced apart on the movable support frame 1, and the two ends of the wire rope 6 are respectively wound around the wire feeding reels 7; by controlling the rotation of the wire feeding reels 7, the wire rope 6 between the two wire feeding reels 7 can be lengthened or shortened.

[0030] The drive device 3 is used to drive the wire rope reel 7 to rotate; the drive end of the drive device 3 is connected to the wire rope reel 7; the rotation direction of the wire rope reel 7 is controlled by the drive device 3 to realize the wire rope 6 being unloaded or wound up.

[0031] The support tray 12 is used to support the well pipe 13; the support tray 12 is set between the wire rope reels 7 by the wire rope 6, and the wire rope 6 is movably connected to the support tray 12.

[0032] When using this electric well casing 13 lowering device, the specific process is as follows:

[0033] Move the entire device to the dewatering well; install the support tray 12 on the wire rope 6 between the two wire reels 7, and adjust the wire reels 7 so that the support tray 12 is placed horizontally and aligned with the dewatering well opening; place the well pipe 13 on the support tray 12; operate the drive device 3 to rotate the wire reel 7 and extend the wire rope 6. Driven by the weight of the well pipe 13 itself, as the wire rope 6 slowly extends, the well pipe 13 gradually moves downward with the support tray 12 into the dewatering well, realizing the lowering of the well pipe 13; after all the well pipes 13 have been lowered, untie the wire rope 6 on one wire reel 7, and rewind the wire rope 6 through the shaft of the other wire reel 7, so that the wire rope 6 can be retrieved from inside the dewatering well onto the wire reel 7.

[0034] In this embodiment, the size of the support tray 12 is smaller than the aperture of the dewatering well, allowing it to move up and down inside the dewatering well. In its initial state, the support tray 12 is located above or below the wellhead of the dewatering well, close to the wellhead. There is sufficient spacing between the two wire reels 7 to allow the well pipe 13 to be placed on the support tray 12 by manual or mechanical hoisting. To prevent the well pipe 13 from tilting, as the well pipe 13 is placed on the support tray 12 and descends with the support tray 12, the well pipe 13 is manually supported to ensure that it moves smoothly downwards without scratching the well wall.

[0035] The above technical solution enables the lowering of the well casing 13 for dewatering. Compared with the method of lowering it manually by holding the steel wire rope 6, it greatly reduces the labor intensity of workers, makes it easier to control the posture of the well casing 13, avoids damage to the well wall, and improves the efficiency and safety of the lowering of the well casing 13.

[0036] like Figures 1-3 As shown in this embodiment, a guide wheel 8 is provided between the wire reel 7 and the support tray 12 to limit the movement path of the wire rope 6 when it extends. The guide wheel 8 is provided with a guide groove 14, and the wire rope 6 is wound around the guide groove 14. Since the support tray 12 is provided with guide wheels 8 on both sides, when the support tray 12 is placed, the guide groove 14 is symmetrically arranged with respect to the support tray 12, which enables both ends of the support tray 12 to descend synchronously when the wire rope 6 extends, and always remain in a horizontal state, making the support tray 12 more stable and further improving the safety of the well casing 13 lowering operation.

[0037] In one specific embodiment, during installation, the wire rope 6 of this application is first wound onto one of the wire reels 7, extends from the wire reel 7, wraps around the guide groove 14 on the same side once, extends to the guide groove 14 on the other side, wraps around the guide groove 14 on the other side once, and then wraps around the other wire reel 7. Preferably, the length of the wire rope 6 is matched with the depth of the dewatering well. When the lowest well pipe 13 is lowered to the bottom of the dewatering well, a small amount of wire rope 6 remains on the other wire reel 7 to facilitate unwinding the wire rope 6 on the other wire reel 7 and achieve the retrieval of the wire rope 6.

[0038] like Figure 4 As shown in this embodiment, the bottom of the support tray 12 is provided with a slot 15, and the wire rope 6 is movably disposed in the slot 15; the slot 15 is aligned with the centerline of the support tray 12. This technical solution ensures a stable connection between the wire rope 6 and the support tray 12, effectively preventing the wire rope 6 from detaching from the support tray 12 or shifting to one side, which could lead to instability of the support tray 12; it also facilitates the recovery of the wire rope 6 after the well casing 13 is lowered.

[0039] The pallet in this application can be circular or other regular shapes as needed; the slot 15 can be a groove with a certain depth on the bottom surface of the pallet 12 or a through hole on the bottom of the pallet 12, both of which can realize the movable connection between the wire rope 6 and the slot 15.

[0040] like Figure 1As shown, in this embodiment, the drive device 3 is located on the side of the wire reel 7 away from the guide wheel 8, and is connected to the wire reel 7 via a timing belt 2. In this application, there can be two drive devices 3, each located on the side of the wire reel away from the guide wheel 8, and each driving the wire reel 7 to rotate via a timing belt 2 to extend the wire rope 6. To ensure that both ends of the support tray 12 descend synchronously and smoothly, the wire ropes 6 on both sides of the support tray 12 need to extend synchronously. Therefore, when there are two drive devices 3, the two drive devices 3 can operate synchronously.

[0041] In a preferred embodiment of this application, a single drive device 3 is provided, located on the side of one of the wire reels 7 furthest from the guide wheel 8. This drive device is connected to the wire reel 7 via a timing belt 2, and the two wire reels 7 are connected via a timing belt 4. This technical solution ensures that the two wire reels 7 rotate synchronously, ensuring that the wire ropes 6 on both sides of the support tray 12 extend synchronously. In this embodiment, the wire ropes 6 are wound around the two wire reels 7 in the same direction. When the two wire reels 7 rotate synchronously, the same length of wire rope 6 can be released or wound up simultaneously.

[0042] like Figure 1 As shown in this embodiment, the movable support frame 1 includes two parallel crossbeams 11 and several longitudinal supports arranged between the crossbeams 11. A wire reel 7 and guide wheels 8 are respectively mounted on the crossbeams 11. The longitudinal supports in the middle have sufficient spacing to allow the support tray 12 and well casing 13 to pass through from top to bottom. Specifically, the two longitudinal supports in the middle are symmetrically arranged, and the guide wheels 8 are respectively positioned at corresponding positions on the two longitudinal supports in the middle. Two other longitudinal supports are symmetrically arranged on both sides of the two longitudinal supports in the middle, and two wire reels 7 are respectively positioned at corresponding positions on the other two longitudinal supports. A longitudinal support is also provided on the outer side of one of the wire reels 7, and the drive device 3 is mounted on this longitudinal support. This arrangement makes the movable support frame 1 more compact, occupies less space, and maintains overall structural stability. The arrangement of the guide wheels 8, wire reels 7, and drive device 3 is more rational, which is conducive to their stable functioning.

[0043] In this embodiment, the movable support frame 1 is equipped with detachable wheels 9. To prevent the movable support frame 1 from moving and becoming unstable during the lowering of the well casing 13, the wheels 9 are removed after the movable support frame 1 is moved to the set position to ensure the stable fixation of the movable support frame 1.

[0044] To further enhance the safety of the electric well casing lowering device of this application, the drive device and / or the wire reel 7 are equipped with a deceleration switch 5 for controlling the rotation speed of the wire reel 7. In case of emergency, the deceleration switch 5 can be activated to control the wire reel 7 to slow down its rotation speed until it stops rotating.

[0045] In a preferred embodiment of this application, the application further includes a control device 10, which is electrically connected to the drive device 3. Preferably, the control device 10 is mounted on the same longitudinal support as the drive device 3. The control device 10 is equipped with an operation panel, which allows inputting commands to set the rotational speed and operating time of the drive device 3 to control the downward speed and descent height of the well casing 13. The control device 10 also includes overload protection, an emergency stop button, limit switches, etc., to ensure the safe and stable lowering of the well casing 13.

[0046] In this embodiment of the application, the method of using the electric well casing lowering device includes the following steps:

[0047] S1. Move the electric well pipe 13 to the top of the dewatering well, so that the support tray 12 is aligned with the dewatering well;

[0048] Specifically, after the electric well pipe 13 lowering device moves to the set position, the wheels 9 are fixed or removed to ensure that the movable support frame 1 is stably fixed on the top surface around the dewatering well; the wire rope 6 is passed through the slot 15 at the bottom of the support tray 12, and the position of the support tray 12 is adjusted so that the support tray 12 is horizontal and located between the two guide wheels 8. At this time, the wire ropes 6 on both sides of the support tray 12 are symmetrically arranged, and the wire ropes 6 can be in a taut or slack state; the support tray 12 is aligned with the wellhead of the dewatering well, and can be located above or below the wellhead of the dewatering well, close to the wellhead;

[0049] S2. Place the well casing 13 on the support tray 12;

[0050] During placement, the well pipe 13 is kept vertical with manual assistance and will not tilt to the side.

[0051] S3. Start the drive unit 3 to lower the well pipe 13 into the dewatering well;

[0052] By inputting the lowering command through the operation panel, the drive device 3 lowers the first section of well pipe 13 to the set depth position of the dewatering well according to the set speed and running time.

[0053] S4. Turn off the drive unit 3 and place the other well pipe 13 on top of the lower well pipe 13;

[0054] When placing another well pipe 13, the top of the lower well pipe 13 is positioned in a position that is easy for the staff to observe, so that the two well pipes 13 can be aligned. The lower well pipe 13 supports the upper well pipe 13, and the upper well pipe 13 is kept vertical with manual assistance.

[0055] S5. Repeatedly start and stop the drive unit 3, and place the upper well pipe 13 in sequence until the lower well pipe reaches the bottom of the dewatering well;

[0056] S6. Unwind the wire rope 6 on one of the wire reels 7, start the drive device 3 to run in reverse, and wind up the wire rope 6 through the other wire reel 7.

[0057] The electric well casing lowering device provided in this application has the following beneficial effects:

[0058] (1) It has a simple structure, is easy to manufacture, and occupies little space;

[0059] (2) The well pipe can be quickly lowered into the dewatering well, which greatly reduces the labor intensity of workers, makes it easy to control the posture of the well pipe, and will not cause damage to the well wall. At the same time, it also improves the efficiency of well pipe lowering and the safety of operation.

[0060] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. An electric well casing lowering device, characterized in that, include: Movable support frame; A wire rope reel is used for unwinding or winding up wire rope. The two wire reels are arranged parallel to each other and spaced apart on the movable support frame, and the two ends of the wire rope are respectively wound around the wire reels; A driving device is used to drive the wire reel to rotate; the driving end of the driving device is connected to the wire reel. A support tray is used to support the well casing; the support tray is set between the wire ropes via the wire ropes, and the wire ropes are movably connected to the support tray.

2. The electric well casing lowering device according to claim 1, characterized in that: A guide wheel is provided between the wire reel and the support tray. The guide wheel has a guide groove, and the wire rope is wound around the guide groove.

3. The electric well casing lowering device according to claim 2, characterized in that: The bottom of the support tray is provided with a slot, and the wire rope is movably disposed in the slot; the slot is aligned with the center line of the support tray.

4. The electric well casing lowering device according to claim 2 or 3, characterized in that: The drive device is located on the side of the pay-off reel away from the guide wheel and is connected to the pay-off reel via a timing belt.

5. The electric well casing lowering device according to claim 4, characterized in that: The two wire reels are connected by a timing belt.

6. The electric well casing lowering device according to claim 2, 3 or 5, characterized in that: The movable support frame includes two parallel crossbeams and several longitudinal supports disposed between the crossbeams, with the wire reel and the guide wheel respectively disposed on the crossbeams.

7. The electric well casing lowering device according to claim 6, characterized in that: The movable support frame is equipped with detachable wheels.

8. The electric well casing lowering device according to claim 7, characterized in that: The drive device and / or the wire reel are provided with a speed reduction switch for controlling the rotation speed of the wire reel.

9. The electric well casing lowering device according to claim 1 or 8, characterized in that: It also includes a control device, which is electrically connected to the drive device.

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