Guide pipe lifting device

Abstract

The utility model relates to the technical field of building construction equipment, and discloses a guide pipe lifting device which comprises two jacking units and a bracket, the two jacking units are symmetrically arranged on an external guide pipe platform, and the bracket is connected to the power output ends of the two jacking units. A fixing unit used for clamping a guide pipe and supporting rods located on the two sides of the fixing unit and vertically arranged are arranged in the bracket, a plurality of through holes are formed in the supporting rods, a plurality of rotatable clamping blocks are arranged on the jacking unit, and the clamping blocks are symmetrically arranged on the two sides of the supporting rods; through the cooperation of the supporting rod and the clamping block, jacking of the guide pipe is not affected, meanwhile, descending of the bracket can be limited, safety during jacking is guaranteed, when the bracket ascends to the preset height and stops ascending, the bracket can be placed at the preset height, the guide pipe does not need to be supported by the jacking unit all the time, and the jacking unit is prevented from being stressed for a long time. After reverse circulation hole cleaning is completed, the fixing unit can be separated from the guide pipe, and the jacking unit and the bracket are withdrawn from the guide pipe platform.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to a catheter lifting device. Background Art

[0002] During the drilling process of the pile hole or after drilling, the soil and rocks in the foundation will fall off from the bottom and wall of the hole and gather at the bottom of the pile hole to form sediment. The existence of sediment reduces the support of the foundation to the foundation pile and affects the stability of the building foundation. Therefore, the thickness of the sediment in the pile hole is strictly restricted in the construction specifications of the building, and even zero sediment is required. In order to meet the sediment requirements of the pile hole, the pile hole is usually cleaned after the pile hole is drilled to remove the sediment at the bottom of the pile hole. Therefore, in order to ensure the quality of the pile, air lift reverse circulation is required to discharge the sediment, and the bottom of the catheter should be kept within 5 to 15 cm from the bottom of the hole. Such a distance can significantly improve the efficiency of hole cleaning and achieve the purpose of efficient hole cleaning.

[0003] CN114733858B discloses a conduit self-lifting and falling device for treating pipe blockage in concrete bored piles and a method for using the device, which comprises a cross arm, a clamp, a vertical bracket, a lifting platform, a pipe clamping mechanism, a driving mechanism and a hydraulic rod. The conduit is lifted to a certain height by arranging a lifting platform, a pipe clamping mechanism and a driving mechanism on the existing cross arm, and then the driving mechanism is used to drive the paddle in the pipe clamping mechanism to instantly disengage from the conduit, causing the conduit to instantly lose support and fall, thereby generating a shock force to clear the conduit. The whole process will not produce a situation similar to the flying of an I-beam, and has a high safety factor. At the same time, manual injection is also omitted, and the efficiency is high.

[0004] The above technical solution actually discloses a catheter lifting device, which lifts the catheter through the cooperation of a lifting platform, a tube clamping mechanism and a driving mechanism. However, during air lift reverse circulation hole cleaning, the catheter needs to maintain a certain height to control the distance between the bottom of the catheter and the bottom of the hole to improve the hole cleaning efficiency. After the lifting platform of the above technical solution lifts the catheter, the hydraulic rod needs to support the catheter all the time to keep the catheter at a certain height. Long-term force will cause wear on the hydraulic rod and reduce its service life. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and provide a catheter lifting device. The lifting device can limit the downward movement of the bracket without affecting the lifting of the catheter through the cooperation of the support rod and the block, thereby ensuring the safety during the lifting. Moreover, when the bracket rises to a preset height and stops rising, the bracket can be placed at the preset height, and the lifting unit does not need to support the catheter all the time, thereby avoiding long-term stress on the lifting unit. After the reverse circulation hole cleaning is completed, the fixing unit can be separated from the catheter, and the lifting unit and the bracket can be withdrawn from the catheter platform.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A catheter lifting device, comprising two lifting units and a bracket, wherein the two lifting units are symmetrically arranged on an external catheter platform and are detachably connected to the external catheter platform, the bracket is connected to the power output ends of the two lifting units, the bracket is provided with a fixing unit for clamping the catheter, and support rods located on both sides of the fixing unit and arranged vertically, the support rods are provided with a plurality of through holes arranged along the length direction thereof, the lifting unit is provided with a plurality of rotatable clamping blocks, and the clamping blocks are symmetrically arranged on both sides of the support rod;

[0008] When the bracket rises, the blocks can be embedded in the through holes in sequence from top to bottom until the bracket rises to a preset height and stops rising. The blocks cooperate with the through holes to limit the support rod from descending and place the bracket at a preset height.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model can limit the downward movement of the bracket without affecting the jacking of the conduit through the cooperation of the support rod and the clamping block, thereby ensuring the safety during jacking. Moreover, when the bracket rises to a preset height and stops rising, the bracket can be placed at the preset height, and the jacking unit does not need to support the conduit all the time, thereby avoiding long-term stress on the jacking unit. After the reverse circulation hole cleaning is completed, the fixing unit can be separated from the conduit, and the jacking unit and the bracket can be withdrawn from the conduit platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional diagram of the catheter lifting device of Example 1;

[0012] Figure 2 is a three-dimensional diagram of a lifting unit of the catheter lifting device of Example 1;

[0013] Figure 3 is a perspective view of a bracket of the catheter lifting device of Example 1;

[0014] Figure 4 It is a schematic diagram of the installation of the catheter lifting device of Example 1. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example 1

[0017] refer to Figures 1 to 4 A catheter lifting device comprises two lifting units 1 and a bracket 2, wherein the two lifting units 1 are symmetrically arranged on an external catheter platform and are detachably connected to the external catheter platform, and the bracket 2 is connected to the power output ends of the two lifting units 1, and the bracket 2 is provided with a fixing unit 22 for clamping the catheter, and a support rod 211 located on both sides of the fixing unit 22 and arranged vertically, and the support rod 211 is provided with a plurality of through holes 2111 arranged along the length direction thereof, and the lifting unit 1 is provided with a plurality of rotatable blocks 13, and the blocks 13 are symmetrically arranged on both sides of the support rod 211;

[0018] When the bracket 2 rises, the block 13 can be embedded in the through hole 2111 from top to bottom in sequence until the bracket 2 rises to a preset height and stops rising. The block 13 cooperates with the through hole 2111 to limit the support rod 211 from descending and place the bracket 2 at a preset height.

[0019] Under this design, when the catheter and the catheter platform are in place, the operator first installs the two lifting units 1 on the catheter platform, and then puts the bracket 2 on the catheter to ensure that the positions of the support rod 211 and the block 13 match, and the bracket 2 is clamped on the thread disc of the catheter through the fixing unit 22 to complete the installation. The operator starts the lifting unit 1 so that its power output part pushes the bracket 2 to drive the catheter to move upward. During the movement, the block 13 is embedded in the through hole 2111 of the support rod 211 from top to bottom, and when the bracket 2 rises to a preset height and stops rising, the block 13 and the through hole 2111 on the support rod 211 cooperate to limit the downward movement of the bracket 2, ensure safety during lifting, and place the bracket 2 at a preset height, so that the lifting unit 1 does not need to support the catheter all the time, and avoid the lifting unit 1 being subjected to force for a long time. And after the reverse circulation hole cleaning is completed, the fixing unit 22 can be separated from the catheter, and the lifting unit 1 and the bracket 2 can be withdrawn from the catheter platform.

[0020] Preferably, the jacking unit 1 includes a fixed frame 11 and a jacking cylinder 12, the fixed frame 11 is detachably connected to the catheter platform, the cylinder body of the jacking cylinder 12 is detachably connected to the fixed frame 11, the power output part of the jacking cylinder 12 is detachably connected to the bracket 2, the block 13 is located on the fixed frame 11, and the support rod 211 is movably connected to the fixed frame 11.

[0021] Specifically, when in use, the fixing frame 11 can be directly transported to the catheter platform, and then the lifting cylinder 12 can be detachably connected to the fixing frame 11, and the power output part of the lifting cylinder 12 is detachably connected to the bracket 2. After the lifting cylinder 12 is lifted to a preset height, the through hole 2111 on the block 13 and the support rod 211 cooperates to place the bracket 2 at a preset height. At this time, the lifting cylinder 12 has completed the work, and the operator can withdraw the lifting cylinder 12. The catheter can be kept at the preset height only by relying on the block 13 and the support rod 211, thereby avoiding the lifting cylinder 12 being subjected to stress for a long time.

[0022] In this embodiment, the fixing frame 11 is provided with a plurality of connecting seats 114, and the plurality of connecting seats 114 are symmetrically arranged on both sides of the support rod 211, the card block 13 corresponds to the connecting seat 114 one by one, and the card block 13 is rotatably connected to the connecting seat 114, and a slope 131 is provided at the bottom of the card block 13, and when the card block 13 is in a horizontal state, the card block 13 can only swing upward.

[0023] Under the action of the connecting seat 114, in the initial state, the block 13 is in a horizontal state and cannot swing downward. When the support rod 211 rises, under the action of the inclined surface 131, the bottom of each through hole 2111 passing through the block 13 will push the block 13 to swing upward, and under the action of the gravity of the block 13, it will return to a horizontal state until it rises to a preset height, at which time the top of the block 13 will be tightly pressed against the top of the through hole 2111, limiting the support rod 211, that is, the bracket 2 from descending.

[0024] In addition, if the catheter needs to be lowered, the operator can flip the block 13 to make the block 13 vertical, so that the block 13 will not block the support rod 211 from descending.

[0025] Preferably, the fixed frame 11 includes a vertically arranged first frame body 111, a horizontally arranged second frame body 112, and a reinforcing rod 113 connected to the first frame body 111 and the second frame body 112. The projection of the fixed frame 11 in the horizontal direction is a triangle. The second frame body 112 is detachably connected to the catheter platform, the oil cylinder is detachably connected to the second frame body 112, and the connecting seat 114 is located on the first frame body 111.

[0026] Specifically, the first frame 111 is arranged vertically, the second frame 112 is arranged horizontally, and the reinforcing rod 113 is connected to the first frame 111 and the second frame 112. Implicitly, the reinforcing rod 113 is arranged obliquely, so the projection in the horizontal direction is a triangle, which can ensure the stability of the fixing frame 11. Moreover, the structure is simple and easy to process.

[0027] In this embodiment, the bracket 2 includes two connecting plates 21, and the two connecting plates 21 are detachably connected to the two lifting cylinders 12, and the two connecting plates 21 are respectively provided with a first fixing portion 212 and a second fixing portion 213, and the first fixing portion 212 and the second fixing portion 213 can be connected by bolts 3 to form the fixing unit 22, and the support rod 211 is respectively located on the two connecting plates 21.

[0028] In actual use, the two connecting plates 21 can be detachably connected to the two lifting cylinders 12, that is, the two lifting units 1 can be independent of each other, which makes it easier to disassemble and assemble the lifting units 1. During installation, it is necessary to ensure the positional relationship between the first fixing part 212 and the second fixing part 213 to ensure that the first fixing part 212 and the second fixing part 213 can form a fixing unit 22 to fix the catheter.

[0029] Preferably, the two connecting plates 21 are each provided with a connecting hole 214 , the power output ends of the two lifting cylinders 12 are each provided with a boss 121 matching the connecting hole 214 , and the two lifting cylinders 12 are detachably connected to the connecting hole 214 via the boss 121 .

[0030] During installation, it is necessary to ensure the position accuracy of the boss 121 and the connecting hole 214, ensure that the support rod 211 on the connecting plate 21 and the fixing frame 11 are movably connected, and at the same time, the boss 121 on the jacking cylinder 12 needs to be installed on the connecting hole 214; after emptying, the connection relationship between the jacking cylinder 12 and the connecting plate 21, and the connection relationship between the jacking cylinder 12 and the catheter platform are released in turn, and the jacking cylinder 12 can be withdrawn.

[0031] In this embodiment, the first fixing portion 212 is a first clamp, and the second fixing portion 213 is a second clamp. The first clamp and the second clamp can be connected and clamped on the thread disc of the catheter by bolts 3. When in use, after installing the two fixing frames 11 at a suitable position, let the first clamp and the second clamp be sleeved on the outside of the catheter, and the first clamp and the second clamp are connected by bolts 3 to complete the fixing of the catheter. When lifting, they can be clamped with the thread disc of the catheter. When the hole is cleaned and the catheter needs to be withdrawn, the two fixing frames 11 can be withdrawn by simply releasing the bolts 3 of the first clamp and the second clamp.

[0032] More preferably, the first clamp and the second clamp are respectively formed integrally with the connecting plate 21. The integrally formed design reduces the number of parts, makes the connection simpler and more convenient, and reduces the complexity of installation and maintenance. It can also effectively improve the overall strength and stability of the connecting piece and reduce the risk of loosening or breaking.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A catheter lifting device, characterized in that: It comprises two lifting units and a bracket, wherein the two lifting units are symmetrically arranged on an external catheter platform and are detachably connected to the external catheter platform, the bracket is connected to the power output ends of the two lifting units, the bracket is provided with a fixing unit for clamping the catheter, and support rods located on both sides of the fixing unit and arranged vertically, the support rods are provided with a plurality of through holes arranged along the length direction thereof, the lifting unit is provided with a plurality of rotatable blocks, and the blocks are symmetrically arranged on both sides of the support rod; When the bracket rises, the blocks can be embedded in the through holes in sequence from top to bottom until the bracket rises to a preset height and stops rising. The blocks cooperate with the through holes to limit the support rod from descending and place the bracket at a preset height.

2. The lifting device according to claim 1, characterized in that: The jacking unit includes a fixed frame and a jacking cylinder. The fixed frame is detachably connected to the catheter platform. The cylinder body of the jacking cylinder is detachably connected to the fixed frame. The power output part of the jacking cylinder is detachably connected to the bracket. The block is located on the fixed frame, and the support rod is movably connected to the fixed frame.

3. The lifting device according to claim 2, characterized in that: The fixing frame is provided with a plurality of connecting seats, and the plurality of connecting seats are symmetrically arranged on both sides of the supporting rod. The card block corresponds to the connecting seats one by one, and the card block is rotatably connected to the connecting seats. An inclined surface is provided at the bottom of the card block. When the card block is in a horizontal state, the card block can only swing upward.

4. The lifting device according to claim 3, characterized in that: The fixed frame includes a vertically arranged first frame, a horizontally arranged second frame, and a reinforcing rod connected to the first frame and the second frame. The projection of the fixed frame in the horizontal direction is a triangle. The second frame is detachably connected to the catheter platform. The oil cylinder is detachably connected to the second frame. The connecting seat is located on the first frame.

5. The lifting device according to claim 2, characterized in that: The bracket includes two connecting plates, which are detachably connected to the two lifting cylinders respectively. The two connecting plates are respectively provided with a first fixing portion and a second fixing portion, and the first fixing portion and the second fixing portion form the fixing unit. The support rods are respectively located on the two connecting plates.

6. The lifting device according to claim 5, characterized in that: The two connecting plates are both provided with connecting holes, the two lifting oil cylinders are both provided with bosses matching the connecting holes, and the two lifting oil cylinders are detachably connected to the connecting holes through the bosses.

7. The lifting device according to claim 5, characterized in that: The first fixing portion is a first clamp, and the second fixing portion is a second clamp. The first clamp and the second clamp can be connected by bolts and clamped on the thread disc of the catheter.

8. The lifting device according to claim 7, characterized in that: The first clamp and the second clamp are respectively formed integrally with the connecting plate.

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