Puller with combined pulling claws

Abstract

The utility model relates to a combined puller with pulling claws, which is characterized by comprising a pulling seat, an ejector rod and the pulling claws, a plurality of pulling claws are arranged, each pulling claw consists of a bent arm, a transition rod and a hook arm, the bent arms, the transition rods and the hook arms are sequentially connected, the pulling claws are hinged with the pulling seat, and the ejector rod is in threaded fit with the pulling seat. The length of the pull claw is adjusted by increasing or decreasing or selecting the specification of the pull claw transition section, and the device is suitable for dismounting bearings with different depths and spaces. By selecting the specification of the bent arm, the opening degree of the pull claw can be adjusted, and bearings of different specifications can be dismounted.

Description

Technical Field

[0001] The utility model relates to the field of puller tools, in particular to a puller with combined pulling claws. Background Art

[0002] Removing pump bearings is a crucial step in water pump maintenance. Traditional puller tools often suffer from poor versatility. Due to the varying specifications and installation spaces for different pump bearings, traditional puller tools often struggle to adapt to diverse working environments. In the past, to accommodate varying bearing sizes and confined working spaces, maintenance personnel might have needed to prepare multiple sets of puller tools of varying specifications. This not only reduced work efficiency but also resulted in a waste of manpower and material resources. Traditional puller tools often proved inoperable, particularly in limited space or with large bearing diameters, significantly hindering maintenance efforts. Utility Model Content

[0003] The purpose of the utility model is to provide a puller with a combined pulling claw to solve the problem of poor versatility in the prior art.

[0004] The utility model is realized by adopting the following technical scheme: a puller with a combined pulling claw, characterized in that it includes a pulling seat, a push rod and a pulling claw, there are multiple pulling claws, and the pulling claw is composed of a bent arm, a transition rod and a hook arm, the bent arm, the transition rod and the hook arm are connected in sequence, the pulling claw is hinged to the pulling seat, and the push rod is threadedly matched with the pulling seat.

[0005] Furthermore, there are three pulling claws in total, and the three pulling claws are evenly distributed on the outer edge of the pulling seat.

[0006] Furthermore, positioning blocks are evenly distributed on the outer edge of the pull seat at intervals of 120 degrees, and the pull claws are connected to the positioning blocks via connecting blocks.

[0007] Furthermore, both ends of the connecting block are connected to the pulling claw and the positioning block via bolts respectively.

[0008] Furthermore, one end of the bent arm is designed as an internal threaded hole, both ends of the transition rod are provided with external threads, the connecting end of the hook arm is provided with internal threads, and both sides of the transition rod are respectively matched with the internal threads of the bent arm and the internal threads of the hook arm.

[0009] Furthermore, there are one or more transition rods, and the length of the pulling claw can be adjusted by adding, subtracting or selecting the specifications of the transition rods.

[0010] Furthermore, the angles of the bending arm are various, and the opening of the pulling claw can be adjusted by selecting the specifications of the bending arm.

[0011] The puller with a combined pull claw described in the utility model has the following beneficial effects:

[0012] Improve versatility: By adding, subtracting or selecting the specifications of the claw transition section, the claw length can be adjusted, making it suitable for disassembling bearings in different depths and spaces.

[0013] Expand the scope of application: By selecting the specifications of the bending arm, the opening of the pulling claw can be adjusted, and bearings of different specifications can be removed.

[0014] Improve work efficiency: One set of pullers can be used in most pump maintenance situations, reducing tool preparation time and waste of manpower and material resources.

[0015] Reduce costs: Most parts use common puller parts, which have low manufacturing and storage costs. Common tools can be used to replace parts at the maintenance site. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of a puller with a combined pull claw;

[0018] Figure 2 Schematic diagram of the combined pulling claw;

[0019] In the figure, 1-pull seat, 2-top rod, 3-positioning block, 4-connecting block, 5-pull claw, 51 pull claw bent arm, 52 pull claw transition rod, 53 pull claw hook arm, 6-bolt. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] like Figure 1-2As shown, a combined puller with a pull claw is used for pump bearings, including a pull seat 1, a push rod 2, a positioning block 3, a connecting block 4, and a pull claw 5. The center of the pull seat 1 is provided with a hole with an internal thread, and the pull rod 2 is matched with the pull seat 1 through a thread, as shown in FIG. Figure 1 As shown, three positioning blocks 3 evenly distributed in an annular shape are provided on the outer edge of the pulling seat 1 , and both ends of the connecting block 4 are connected to the positioning blocks 3 and the pulling claws 5 respectively through bolts 6 .

[0023] The pull claw 5 comprises a curved arm 51, a transition rod 52, and a hook arm 53. One end of the curved arm 51 is designed as an internally threaded hole, while both ends of the transition rod 52 are provided with external threads, and the connecting end of the hook arm 53 is provided with an internal thread. The two sides of the transition rod 52 mate with the internal threads of the curved arm 51 and the internal threads of the hook arm 53, respectively.

[0024] The length of the pull claw 5 can be adjusted by adding or subtracting or selecting the specifications of the transition section, and the opening of the pull claw 5 can be adjusted by selecting the specifications of the bent arm 51. The bearing is clamped by the pull claw 5 and removed by rotating the ejector rod 2.

[0025] The pull claw 5 of the present invention can be adjusted in length by adding or removing the intermediate transition rod 52. At the same time, the pull claw bent arm 51 can be replaced to adjust the opening angle to realize the removal of bearings of different specifications. By assembling the pull claw 5, it can solve the problem that the puller cannot be used in a space-constrained environment, and can be applied to bearings of various specifications. A set of pullers can be used in most pump maintenance occasions. Most parts of this puller can be used with universal tools, and the manufacturing and storage costs are low. At the maintenance site, universal tools can be used to replace parts and adjust the working range, which greatly facilitates the maintenance workers.

[0026] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A puller with a combined pull claw, characterized in that: The invention comprises a pull seat (1), a push rod (2) and a pull claw (5), wherein the pull claw (5) is provided in plurality and is composed of a bent arm (51), a transition rod (52) and a hook arm (53), wherein the bent arm (51), the transition rod (52) and the hook arm (53) are connected in sequence, the pull claw (5) is hinged to the pull seat (1), and the push rod (2) is threadedly engaged with the pull seat (1).

2. A puller with a combined pull claw according to claim 1, characterized in that: There are three pulling claws (5) in total, and the three pulling claws (5) are evenly distributed on the outer edge of the pulling seat (1).

3. A puller with a combined pull claw according to claim 1, characterized in that: Positioning blocks (3) are evenly distributed at intervals of 120° on the outer edge of the pulling seat (1), and the pulling claw (5) is connected to the positioning blocks (3) via a connecting block (4).

4. A puller with a combined pull claw according to claim 3, characterized in that: The two ends of the connecting block (4) are respectively connected to the pulling claw (5) and the positioning block (3) via bolts (6).

5. A puller with a combined pull claw according to claim 1, characterized in that: One end of the bent arm (51) is designed as an internal threaded hole, both ends of the transition rod (52) are provided with external threads, the connecting end of the hook arm (53) is provided with an internal thread, and both sides of the transition rod (52) are respectively matched with the internal threads of the bent arm (51) and the internal threads of the hook arm (53).

6. A puller with a combined pull claw according to claim 1, characterized in that: There are one or more transition rods (52), and the length of the pulling claw (5) can be adjusted by adding, subtracting or selecting the specifications of the transition rods (52).

7. A puller with a combined pull claw according to claim 1, characterized in that: The angles of the bending arm (51) are various, and the opening of the pulling claw (5) can be adjusted by selecting the specifications of the bending arm (51).

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