CN204195678U - To choose extracting tool - Google Patents

Abstract

The utility model discloses an extraction and disassembly tool. The extraction and disassembly tool comprises an extractor (1), a screw rod (2) and a connecting rod (3). The outer peripheral edge of the extractor (1) is provided with A plurality of mounting slots (12) are arranged, the extractor (1) has a central threaded hole (11), the screw rod (2) is threadedly connected with the central threaded hole (11), and one end of the connecting rod (3) is connected to be disassembled Workpiece, the other end clamps on the mounting groove (12). The extraction and disassembly tool has simple manufacturing requirements and structure, high versatility, facilitates the extraction of disassembled workpieces, especially the extraction of disassembled workpieces that cannot be directly applied, and protects the disassembled workpieces from damage.

Description

Extract removal tool

technical field

The utility model relates to a special tool, in particular to a pulling and dismounting tool.

Background technique

The drum, induced draft fan, motor, and bearing housing of the boiler often need to be taken out of the impeller and bearing during the maintenance process. Generally, the casing of the small fan is closed, so the impeller and other parts are not easy to disassemble.

For example, in the process of disassembling the impeller, two symmetrical threaded holes are left on the front end of the impeller. Since there is no special tool to pull out the impeller, and it is not possible to directly apply force on the blade, it is necessary to repair and repair the impeller. Maintenance brings great inconvenience. It is also possible that in the process of extracting the impeller, the static balance and dynamic balance of the impeller will be damaged, resulting in the failure of the normal operation of the fan.

In view of this, there is a need for a special tool that can easily extract the impeller.

Utility model content

The purpose of the utility model is to provide a pulling and dismantling tool, which has simple manufacturing requirements and structure, high versatility, facilitates the pulling of the disassembled workpiece, and protects the disassembled workpiece from damage.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an extraction and disassembly tool, the extraction and removal tool includes an extractor, a screw rod and a connecting rod, and the outer peripheral edge of the extractor is provided with circumferentially spaced A plurality of mounting slots arranged, the extractor has a central threaded hole, the screw rod is threadedly connected with the central threaded hole, one end of the connecting rod is connected to the workpiece to be disassembled, and the other end is clamped on the mounting on the slot.

Preferably, the connecting rod is a threaded rod with a nut.

Preferably, the connecting rod is a pull claw, one end of the pull claw is formed as a hook, and the other end is formed as a threaded end.

Preferably, the screw rod has an end cap, and the end cap is provided with a through hole.

Preferably, a centering cone is formed at the front end of the screw rod.

Preferably, the extractor has three installation slots, and the angle between two adjacent installation slots is 120 degrees.

Preferably, the extractor has four installation slots, and the angle between two adjacent installation slots is 90 degrees.

Through the above technical solution, the utility model improves the removed workpiece as a force-bearing object into a puller as a force-bearing object, effectively protecting the disassembled workpiece, especially the disassembled workpiece that cannot be directly applied. Using the extractor as a force-bearing object, it is necessary to connect and fix the extractor to the disassembled workpiece, so one end of the connecting rod is connected to the disassembled workpiece, and the other end is clamped on the installation groove. And because the removed workpiece is laborious or difficult to apply force, so by screwing the screw mandrel into the central threaded hole of the extractor, rotating the screw mandrel, the threaded fit of the screw mandrel and the central threaded hole makes the extractor and the disassembled workpiece At the same time, it moves toward the direction of extraction with the rotation of the screw rod. The extraction and disassembly tool has simple manufacturing requirements and structure, high versatility, facilitates the extraction of the disassembled workpiece, and protects the disassembled workpiece from damage.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the schematic diagram of the four-slot extractor of extracting dismounting tool of the preferred embodiment of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a schematic diagram of a three-slot extractor for extracting and dismounting tools in a preferred embodiment of the present invention;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is a schematic diagram of a screw mandrel for extracting and dismounting a tool in a preferred embodiment of the present invention;

Fig. 6 is a schematic diagram of a threaded rod for extracting and dismounting a tool in a preferred embodiment of the present invention;

Fig. 7 is a schematic diagram of the pulling claw of the extraction and disassembly tool in the preferred embodiment of the present invention.

Explanation of reference signs

1 Extractor 2 Screw

3 Connecting rod 11 Central threaded hole

12 Mounting groove 21 End cap

22 Through hole 23 Centering cone

31 Nut 32 Hook

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In the present utility model, in the case of no contrary description, the used orientation words such as "up, down, top, bottom" are usually for the direction shown in the drawings or for vertical, vertical or gravity The terms used to describe the mutual positional relationship of each component in terms of direction.

As shown in Fig. 1 to Fig. 7, a kind of extractor removal tool comprises extractor 1, screw rod 2 and connecting rod 3, and the outer peripheral edge of extractor 1 is provided with a plurality of mounting grooves 12 arranged at intervals along the circumferential direction, extractor 1 has a central threaded hole 11, the screw rod 2 is threadedly connected with the central threaded hole 11, one end of the connecting rod 3 is connected to the workpiece to be disassembled, and the other end is clamped on the installation groove 12. The utility model improves the force-bearing object from the disassembled workpiece to the extractor 1, so that the disassembled workpiece can be effectively protected, especially the disassembled workpiece that cannot be directly applied. With the extractor 1 as a force-bearing object, it is necessary to connect and fix the extractor 1 to the disassembled workpiece, so one end of the connecting rod 3 is connected to the disassembled workpiece, and the other end is clamped on the installation groove 12 . Because the removed workpiece is laborious or not easy to apply force, the screw mandrel 2 is screwed into the central threaded hole 11 of the extractor 1, the screw mandrel 2 is rotated, and the threaded cooperation of the screw mandrel 2 and the central threaded hole 11 is used to make The extractor 1 and the workpiece to be disassembled move together with the rotation of the screw rod 2 toward the direction of extraction. The extraction and disassembly tool has simple manufacturing requirements and structure, and has high versatility, so that the operation method of the extraction and disassembly tool is convenient for the disassembled workpiece. The extraction and protection of the disassembled workpiece.

It should be noted that the central threaded hole 11 of the extractor 1 may be a threaded hole formed on the extractor 1 or a nut provided at the center of the extractor 1 . In order to enhance the strength of the central threaded hole 11, the peripheral position of the central threaded hole 11 can be appropriately thickened, and the central threaded hole 11 can also select a suitable thread according to actual usage conditions. In addition, in a preferred embodiment of the present invention, and in a non-limiting manner, the installation groove 12 may be a groove as shown in FIG. 1 and FIG. 3 , or a through hole provided on the extractor 1 .

In particular, as shown in FIG. 6 , the connecting rod 3 is a threaded rod with a nut 31 . For example, the impeller in the drum and the induced draft fan leaves two symmetrical threaded holes at the front end of the impeller when leaving the factory. Cap 31 threaded rod. Wherein, the threaded rod is a threaded rod with the same diameter and length as the threaded hole. The nut 31 plays a role of clamping when the threaded rod is installed in the installation groove 12 , and the diameter of the nut 31 is larger than that of the installation groove 12 , so that the threaded rod is more firmly clamped in the installation groove 12 . The threaded rod is used to screw into the threaded hole of the removed workpiece when leaving the factory, so that the removed tool is firmly connected with the extractor 1 .

In particular, as shown in FIG. 7 , the connecting rod 3 is a pull claw, one end of the pull claw is formed as a hook 32 , and the other end is formed as a threaded end. For the disassembled workpiece that does not have a threaded hole reserved at the factory, the connecting rod 3 is preferably a pull claw. It should be noted that the pull claw shown in Figure 7 can be used as both an inner claw and an outer claw, that is, the inner claw is used to hook the inner edge of the disassembled workpiece, and the outer claw is used to hook the outer edge of the disassembled workpiece. Edge, the inner edge is the outer edge of the central hole of the workpiece to be disassembled, and the outer edge is the edge of the outer contour of the workpiece to be disassembled. The hook 32 at one end of the pull claw plays the role of hooking and pulling the disassembled workpiece, and the hook 32 is hooked on the inner or outer edge of the disassembled workpiece, and the hook 32 hook position is selected according to the extraction needs of the disassembled workpiece . The threaded end of the other end passes through the installation groove 12 and is fastened by the nut matched therewith, so that the workpiece to be disassembled is firmly connected with the extractor 1 .

Some disassembled workpieces are not easy to apply force due to the complex structure of the location, or because the disassembled workpiece requires a large force to be extracted, it is difficult to achieve only by the operator's bare hands. Therefore, in particular, the screw rod 2 has The end cap 21 is provided with a through hole 22 . By using a wrench to clamp the end cap 21 to rotate the screw mandrel 2, or to pass through the through hole 22 to rotate the screw mandrel 2, it is easier for the operator to apply force, and thus it is easier to rotate the screw mandrel 2 to extract the workpiece to be disassembled. In a preferred embodiment of the present utility model, as shown in FIG. 5 , the end cap 21 is designed in a square shape to facilitate rotation of the screw shaft 2 with a wrench.

In order to make the threaded shaft 2 fully cooperate with the central threaded hole 11 during extraction, in particular, a centering cone 23 is formed at the front end of the threaded shaft 2 . The centering cone 23 facilitates the centering of the screw mandrel 2, so that the screw mandrel 2 will not deviate, better cooperate with the central threaded hole 11, and quickly extract the disassembled workpiece.

In particular, as shown in FIG. 3 , the extractor 1 has three installation grooves 12 , and the angle between two adjacent installation grooves 12 is 120 degrees. In a preferred embodiment of the present invention, and in a non-limiting manner, the three mounting grooves 12 are equal diameter grooves.

In particular, as shown in FIG. 1 , the extractor 1 has four installation grooves 12 , and the angle between two adjacent installation grooves 12 is 90 degrees. In a preferred embodiment of the present invention, and in a non-limiting manner, the corresponding two installation grooves 12 are equal-diameter grooves, and the diameters of the installation grooves 12 are 10 mm and 12 mm.

Particularly preferably, an extractor 1 including three installation slots 12 and an extractor 1 including four slots cooperate with the same threaded rod 2, so that the versatility of the extractor 1 is improved, and it is more convenient to use and carry. In addition, in a preferred embodiment of the present utility model, and in a non-limiting manner, the extraction and disassembly tool is preferably a rigid body, using No. 45 steel, which is heat-treated after processing to restore its rigidity.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (7)

1. Extracting and dismounting tool, it is characterized in that, described extracting and disassembling tool comprises extractor (1), screw mandrel (2) and connecting rod (3), and the outer periphery of described extractor (1) is provided with A plurality of mounting grooves (12) arranged at intervals in the circumferential direction, the extractor (1) has a central threaded hole (11), the screw rod (2) is threadedly connected with the central threaded hole (11), the One end of the connecting rod (3) is connected to the workpiece to be disassembled, and the other end is clamped on the installation groove (12). 2. The extracting and dismounting tool according to claim 1, characterized in that, the connecting rod (3) is a threaded rod with a nut (31). 3. The extracting and dismounting tool according to claim 1, characterized in that, the connecting rod (3) is a pull claw, one end of the pull claw is formed as a hook (32), and the other end is formed as a threaded end. 4. The extraction and removal tool according to claim 1, characterized in that, the screw rod (2) has an end cap (21), and the end cap (21) is provided with a through hole (22). 5. The extracting and dismounting tool according to claim 4, characterized in that, a centering cone (23) is formed at the front end of the screw rod (2). 6. The extracting and dismounting tool according to claim 1, characterized in that, there are three mounting grooves (12) of the extractor (1), and two adjacent mounting grooves (12) are clamped The angle is 120 degrees. 7. The extracting and dismounting tool according to claim 1, characterized in that, there are four mounting grooves (12) of the extractor (1), and two adjacent mounting grooves (12) are clamped The angle is 90 degrees.