Concrete pipe lowering device

Abstract

The utility model provides a concrete pipe lowering device, which relates to the technical field of construction devices and comprises a support frame, a winch and a clamping mechanism. According to the concrete pipe lowering device, an inner circular plate is horizontally placed in a concrete pipe, a tool is used for screwing a long stud downwards, so that a lower pressing plate moves downwards, clamping pieces at the two ends of the lower pressing plate are extruded outwards, inner supporting plates arranged on the two sides are clamped to the inner wall of the concrete pipe, and the concrete pipe is stably clamped; a lifting appliance is fixed to the end of a lifting rope, a clamping column of the lifting appliance extends into the position below a semicircular groove in the connecting frames from the interval between the two connecting frames, a connecting plate is rotated, so that the clamping column is clamped in the semicircular groove, a concrete pipe is lowered into a dewatering well from one side of a transverse plate, the lifting rope on a winch winds around the transverse plate, and under the action of gravity, the concrete pipe is lifted up and down. And the lifting rope below the transverse plate is vertical and is embedded in the tooth groove, so that the lifting rope can be prevented from sliding along the transverse plate when the concrete pipe is lowered, and the lowering process becomes stable.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and in particular to a concrete pipe lowering device. Background Technology

[0002] Concrete pipes are commonly used in dewatering wells, placed in areas with high groundwater levels, for pumping water, draining water, or ensuring water level control during construction. They are typically circular pipes used to form well walls underground, preventing well wall collapse, and simultaneously introducing groundwater into the well or draining it underground.

[0003] A concrete pipe lowering device is a device used to lift concrete pipes. It is mainly used to lower precast concrete pipes to a designated location. On the construction site, a crane is usually used to lift and lower the concrete pipes using a hook. During lifting, a lifting hole needs to be opened on the concrete pipe or a binding strap needs to be tied to the outside of the concrete pipe. The hook is then attached to the lifting hole or binding strap to lower the concrete pipe.

[0004] However, when using existing methods to lower concrete pipes, the concrete pipes cannot be stably clamped and moved vertically downwards. Construction workers may face significant safety risks during the installation process. Inclined pipes or unstable supports may cause the concrete pipes to suddenly slip or overturn, posing a risk of injury to construction workers. Utility Model Content

[0005] This invention provides a concrete pipe lowering device, which solves the problem mentioned in the background art that the concrete pipe cannot be stably clamped and moved vertically downward.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete pipe lowering device, comprising a support frame, a winch, and a clamping mechanism. A winch is mounted on the upper end of the support frame, and a hoisting rope is wound around the winch. The clamping mechanism is mounted on the hoisting rope and includes an inner circular plate, clamping components, a lower pressure plate, and a long stud. Two grooves are formed on the upper surface of the inner circular plate, and two sets of clamping components are respectively disposed in the two grooves. The clamping components are symmetrically arranged about the central axis of the inner circular plate. Each clamping component includes a sliding plate, an upper plate, and an inner support plate. The sliding plate is slidably connected in the grooves, and the upper plate is fixedly connected to the upper end of the sliding plate. The side of the upper plate is inclined. The inner support plate is fixed to the lower end of the sliding plate. A lower pressure plate is disposed between the two upper plates. A long stud is threadedly connected to the upper surface of the lower pressure plate, and the long stud penetrates the inner circular plate and is threadedly connected to it.

[0007] Preferably, the support frame includes straight tubes and horizontal tubes, with two straight tubes arranged in parallel, and multiple horizontal tubes fixed between the two straight tubes. The winch is fixed on the horizontal tubes, and the winch is placed perpendicular to the straight tubes.

[0008] Preferably, both ends of the straight tube are provided with extension tubes, which are slidably connected inside the straight tube.

[0009] Preferably, a horizontal plate is provided on one side of the winch, and the horizontal plate is fixed between the two straight pipes.

[0010] Preferably, the side of the horizontal plate away from the winch is provided with a plurality of protruding teeth, the plurality of protruding teeth being arranged linearly along the length direction of the horizontal plate, and the upper surface of the protruding teeth being provided with a tooth groove.

[0011] Preferably, the suspension rope passes through the toothed groove.

[0012] Preferably, the clamping member is provided with connecting frames on both sides, and a semi-circular groove is provided through the side of the connecting frame.

[0013] Preferably, the free end of the lifting rope is provided with a lifting device, and the clamping mechanism is fixed to the lifting rope by the lifting device. The lifting device includes a connecting plate and a clamping post. The clamping post is fixedly connected to both sides of the connecting plate, and the clamping post is disposed in the semi-circular groove.

[0014] Preferably, both ends of the lower pressure plate are beveled.

[0015] Preferably, the upper plate has an inclined groove on its inclined surface, and the lower pressure plate is slidably connected in the inclined groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Place the support frame at the location of the dewatering well. Adjust the extension pipe outwards to a specific length according to the construction site conditions, extending the straight pipe to ensure the support frame can stably connect to the well opening. Place the inner circular plate of the clamping mechanism horizontally inside the concrete pipe. Use a tool capable of tightening countersunk bolts to screw down the long stud, causing the lower pressure plate to move downwards. This pushes the clamps at both ends of the lower pressure plate outwards, causing the inner support plates on both sides to engage with the inner wall of the concrete pipe, thus stably clamping the concrete pipe. Secure the lifting device to the end of the lifting rope. At the top, extend the clamping post of the lifting device from the gap between the two connecting frames into the semi-circular groove on the connecting frame. Rotate the connecting plate so that the clamping post is engaged in the semi-circular groove. Lower the concrete pipe from one side of the horizontal plate into the dewatering well. Wrap the hoisting rope on the winch around the horizontal plate. Due to gravity, the hoisting rope below the horizontal plate is vertical. The hoisting rope is embedded in the toothed groove, which can prevent the hoisting rope from slipping along the horizontal plate when lowering the concrete pipe, making the lowering process smooth. Start the winch to lower the hoisting rope, so that the concrete pipe can be stably and vertically lowered to the bottom of the dewatering well. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the concrete pipe lowering device of this utility model.

[0019] Figure 2 This is a front view of the concrete pipe lowering device of this utility model;

[0020] Figure 3 for Figure 1 Enlarged view of point A;

[0021] Figure 4 This is a schematic diagram of the structure of the upper plate and the lower pressure plate of this utility model.

[0022] Figure 5 This is a top view of the concrete pipe lowering device of this utility model;

[0023] Figure 6 for Figure 5 Enlarged view of point B;

[0024] Figure 7 This is a schematic diagram of the clip structure of this utility model;

[0025] Figure 8 This is a schematic diagram of the clamping mechanism of this utility model clamping inside a concrete pipe.

[0026] The following are the labeling elements in the diagram: 1. Support frame; 11. Straight pipe; 111. Extension pipe; 12. Horizontal pipe; 2. Winch; 3. Lifting rope; 31. Lifting device; 311. Connecting plate; 312. Clamping post; 4. Clamping mechanism; 41. Inner circular plate; 411. Slide groove; 412. Connecting frame; 4121. Semicircular groove; 42. Clamping piece; 421. Slide plate; 422. Upper plate; 4221. Inclined groove; 423. Inner support plate; 43. Lower pressure plate; 44. Long stud; 5. Horizontal plate; 51. Convex tooth; 511. Tooth groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] This utility model provides a concrete pipe lowering device, such as... Figure 1 and Figure 2 As shown, the system includes a support frame 1, a winch 2, and a clamping mechanism 4. The support frame 1 includes two straight pipes 11 and two horizontal pipes 12. Two straight pipes 11 are provided and arranged in parallel. Multiple horizontal pipes 12 are fixed between the two straight pipes 11. The winch 2 is provided at the upper end of the support frame 1 and is fixed on the horizontal pipes 12. The winch 2 is placed perpendicular to the straight pipes 11. Extension pipes 111 are provided at both ends of the straight pipes 11 and are slidably connected inside the straight pipes 11. The dewatering well is usually vertically installed. The support frame 1 is placed at the dewatering well. The extension pipes 111 are pulled outward to a specific length according to the construction site, so that the length of the straight pipes 11 can be extended so that the support frame 1 can be stably attached to the dewatering well opening.

[0029] like Figure 3 and Figure 4 As shown, a hoisting rope 3 is wound around the winch 2, and a clamping mechanism 4 is mounted on the hoisting rope 3. A lifting device 31 is mounted on the free end of the hoisting rope 3, and the clamping mechanism 4 is fixed to the hoisting rope 3 via the lifting device 31. The lifting device 31 includes a connecting plate 311 and clamping posts 312, with clamping posts 312 fixedly connected to both sides of the connecting plate 311. The lifting device 31 is fixed to the end of the hoisting rope 3, and the clamping mechanism 4 is mounted on the lifting device 31.

[0030] like Figure 5 and Figure 6As shown, a horizontal plate 5 is provided on one side of the winch 2, and the horizontal plate 5 is fixed between two straight pipes 11. Multiple protruding teeth 51 are provided on the side of the horizontal plate 5 away from the winch 2. The multiple protruding teeth 51 are arranged linearly along the length of the horizontal plate 5. A toothed groove 511 is formed through the upper surface of the protruding teeth 51, through which the hoisting rope 3 passes. The hoisting rope 3 on the winch 2 is routed around the horizontal plate 5. Depending on the relative position of the dewatering wellhead and the support frame 1, the appropriate toothed groove 511 can be selected for the hoisting rope 3. Due to gravity, the hoisting rope 3 below the horizontal plate 5 is vertical, and the hoisting rope 3 is embedded in the toothed groove 511, which prevents the hoisting rope 3 from slipping along the horizontal plate 5 when lowering the concrete pipe, making the lowering process smooth.

[0031] like Figure 8 As shown, the clamping mechanism 4 is placed inside the concrete pipe, as... Figure 3 and Figure 4 As shown, the clamping mechanism 4 includes an inner circular plate 41, clamping members 42, a lower pressure plate 43, and a long stud 44. The long stud 44 is a countersunk bolt. Two grooves 411 are formed on the upper surface of the inner circular plate 41. Two sets of clamping members 42 are respectively disposed in the two grooves 411. The clamping members 42 are symmetrically arranged about the central axis of the inner circular plate 41. Connecting brackets 412 are provided on both sides of the clamping members 42. Semicircular grooves 4121 are formed through the sides of the connecting brackets 412. The clamping studs 312 are disposed in the semicircular grooves 4121. Figure 7 As shown, the clamping component 42 includes a sliding plate 421, an upper plate 422, and an inner support plate 423. The sliding plate 421 is slidably connected in the slide groove 411. The upper plate 422 is fixedly connected to the upper end of the sliding plate 421. The side of the upper plate 422 is inclined. The inner support plate 423 is fixed to the lower end of the sliding plate 421. A lower pressure plate 43 is provided between the two upper plates 422. Both ends of the lower pressure plate 43 are inclined. An inclined groove 4221 is provided on the inclined surface of the upper plate 422. The lower pressure plate 43 is slidably connected in the inclined groove 4221. A long stud 44 is threadedly connected to the upper surface of the lower pressure plate 43. The long stud 44 is threadedly connected to the inner circular plate 41. The inner circular plate 41 of the clamping mechanism 4 is placed horizontally in the concrete pipe. The diameter of the inner circular plate 41 is the same as the inner diameter of the concrete pipe. The long stud 44 is turned downwards, causing the lower pressure plate 43 to move downwards and press the clamping parts 42 at both ends of the lower pressure plate 43 outwards, so that the inner support plates 423 on both sides are clamped onto the inner wall of the concrete pipe.

[0032] Using this utility model, such as Figure 1 and Figure 2As shown, the support frame 1 is placed at the location of the dewatering well. The extension pipe 111 is pulled outwards to a specific length according to the construction site, extending the length of the straight pipe 11 so that the support frame 1 can be stably attached to the dewatering well opening. The inner circular plate 41 of the clamping mechanism 4 is placed horizontally inside the concrete pipe. Using a tool capable of tightening countersunk bolts, the long stud 44 is tightened downwards, causing the lower pressure plate 43 to move downwards. This pushes the clamping pieces 42 at both ends of the lower pressure plate 43 outwards, causing the inner support plates 423 on both sides to engage with the inner wall of the concrete pipe, thus stably clamping the concrete pipe. The lifting device 31 is fixed to the end of the lifting rope 3. The locking post 312 of 31 extends from the gap between the two connecting frames 412 and enters the semi-circular groove 4121 on the connecting frame 412. The connecting plate 311 is rotated so that the locking post 312 is engaged in the semi-circular groove 4121. The concrete pipe is lowered into the dewatering well from one side of the horizontal plate 5. The hoisting rope 3 on the winch 2 is wrapped around the horizontal plate 5. Due to gravity, the hoisting rope 3 below the horizontal plate 5 is vertical. The hoisting rope 3 is embedded in the toothed groove 511, which can prevent the hoisting rope 3 from sliding along the horizontal plate 5 when lowering the concrete pipe, making the lowering process smooth. The winch 2 is started to lower the hoisting rope 3, which can stably and vertically lower the concrete pipe to the bottom of the dewatering well. After the concrete pipe is placed, turn off the winch 2, press down the hoisting rope 3 to disengage the clamping post 312 from the semi-circular groove 4121, rotate the hoisting rope 3 to allow the connecting plate 311 to enter the gap between the two connecting frames 412, and start the winch 2 to retrieve the hoisting rope 3. At this time, the clamping mechanism 4 remains at the bottom of the concrete pipe, which can seal the bottom of the dewatering well. When it is not necessary to seal the bottom of the dewatering well, after the concrete pipe is lowered, the clamping mechanism 4 needs to be removed. At this time, the clamping post 312 can be pushed along the semi-circular groove 4121 to one side of the connecting frame 412 by the hoisting rope 3, so that the head of the long stud 44 is exposed. Use a tool to turn the long stud 44 upward, which can move the lower pressure plate 43 upward and retract the clamping parts 42 on both sides inward, canceling the clamping effect on the concrete pipe. Then start the winch 2 to retrieve the hoisting rope 3 and remove the clamping mechanism 4 from the concrete pipe.

[0033] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A concrete pipe lowering device, characterized in that, The system includes a support frame (1), a winch (2), and a clamping mechanism (4). The winch (2) is mounted on the upper end of the support frame (1), and a hoisting rope (3) is wound around the winch (2). The clamping mechanism (4) is mounted on the hoisting rope (3). The clamping mechanism (4) includes an inner circular plate (41), clamping members (42), a lower pressure plate (43), and a long stud (44). The upper surface of the inner circular plate (41) has two sliding grooves (411). Two sets of clamping members (42) are respectively arranged in the two sliding grooves (411). The clamping members (42) are symmetrically arranged about the central axis of the inner circular plate (41). The component (42) includes a sliding plate (421), an upper plate (422), and an inner support plate (423). The sliding plate (421) is slidably connected in the slide groove (411). The upper plate (422) is fixedly connected to the upper end of the sliding plate (421). The side of the upper plate (422) is inclined. The inner support plate (423) is fixed to the lower end of the sliding plate (421). A lower pressure plate (43) is provided between the two upper plates (422). A long stud (44) is threadedly connected to the upper surface of the lower pressure plate (43). The long stud (44) is threadedly connected to the inner circular plate (41).

2. The concrete pipe lowering device according to claim 1, characterized in that, The support frame (1) includes a straight tube (11) and a horizontal tube (12). There are two straight tubes (11) arranged in parallel. Multiple horizontal tubes (12) are fixed between the two straight tubes (11). The winch (2) is fixed on the horizontal tube (12). The placement direction of the winch (2) is perpendicular to the straight tube (11).

3. The concrete pipe lowering device according to claim 2, characterized in that, Both ends of the straight tube (11) are provided with extension tubes (111), and the extension tubes (111) are slidably connected inside the straight tube (11).

4. The concrete pipe lowering device according to claim 3, characterized in that, A horizontal plate (5) is provided on one side of the winch (2), and the horizontal plate (5) is fixed between the two straight pipes (11).

5. The concrete pipe lowering device according to claim 4, characterized in that, The horizontal plate (5) is provided with a plurality of protruding teeth (51) on the side away from the winch (2). The plurality of protruding teeth (51) are arranged linearly along the length direction of the horizontal plate (5), and the upper surface of the protruding teeth (51) is provided with a tooth groove (511).

6. The concrete pipe lowering device according to claim 5, characterized in that, The suspension rope (3) passes through the toothed groove (511).

7. The concrete pipe lowering device according to claim 1, characterized in that, Both sides of the clip (42) are provided with connecting brackets (412), and a semi-circular groove (4121) is provided through the side of the connecting bracket (412).

8. The concrete pipe lowering device according to claim 7, characterized in that, The free end of the hoisting rope (3) is provided with a lifting device (31), and the clamping mechanism (4) is fixed to the hoisting rope (3) by the lifting device (31). The lifting device (31) includes a connecting plate (311) and a clamping post (312). The clamping post (312) is fixedly connected to both sides of the connecting plate (311), and the clamping post (312) is set in the semi-circular groove (4121).

9. The concrete pipe lowering device according to claim 1, characterized in that, Both ends of the lower pressure plate (43) are inclined surfaces.

10. The concrete pipe lowering device according to claim 9, characterized in that, The upper plate (422) has a groove (4221) on its inclined surface, and the lower pressure plate (43) is slidably connected in the groove (4221).

Images