Combined clamp special for disassembling and assembling water pump

Abstract

The special combined clamp comprises a body, a containing cavity is formed in the top face of the body, a fixing sleeve is arranged outside the containing cavity, an inner hole of the fixing sleeve comprises a first unthreaded hole part and a second unthreaded hole part, a limiting step is formed at the end, right facing the second unthreaded hole part, of the first unthreaded hole part, and an ejector rod is arranged on the first unthreaded hole part in an axial sliding mode; an anti-rotation structure is arranged between the ejector rod and the fixing sleeve, the inner end of the ejector rod extends into the containing cavity, a threaded hole is formed in the ejector rod, a mandrel movably penetrates through the second unthreaded hole part, the outer end of the mandrel extends out of the second unthreaded hole part and is provided with a handle, an outer threaded part is arranged at the inner end of the mandrel and is in threaded connection with the threaded hole, and the mandrel is provided with a protruding ring. And the convex ring clings to the limiting step to form axial limiting. The device is specially used for clamping and fixing the water pump, operation is easy, water pump clamping is convenient, labor is saved, the water pump disassembling and assembling efficiency is improved, and the water pump maintenance cost is reduced.

Description

Technical Field

[0001] The invention belongs to the field of tooling fixtures, and in particular relates to a special combined fixture for disassembling and assembling a water pump. Background Art

[0002] The water pump is the main component of the water-cooled closed pressure circulation cooling system, which keeps the cooling water circulating in the cooling system. In actual use, the water pump needs to be repaired if it leaks water or oil. The original disassembly and assembly fixture for repairing the water pump is a simple wrench, which is laborious and time-consuming, and requires two people to work together, with low work efficiency. At the same time, the existing disassembly and assembly tools also have the following problems:

[0003] 1. There is no fixed part during disassembly and assembly, so the water pump cannot be fixed on the workbench and cannot be positioned firmly.

[0004] 2. During repairs, at least two persons are required to work together. Improper coordination may easily cause personal injury and damage to pump components.

[0005] 3. Due to the lack of special clamps, the repair work is laborious, time-consuming and inefficient. Summary of the invention

[0006] In view of this, the present invention aims to provide a special combined clamp for disassembling and assembling a water pump, so as to facilitate clamping and fixing the water pump and improve maintenance efficiency and safety.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A special combined clamp for disassembling and assembling a water pump comprises a main body, a accommodating cavity is provided on the top surface of the main body, a fixing sleeve is arranged outside the accommodating cavity, an inner hole of the fixing sleeve comprises a first light hole portion and a second light hole portion, the first light hole portion is arranged at one end of the fixing sleeve close to the main body, and its diameter is larger than the diameter of the second light hole portion, a limiting step is formed at one end of the first light hole portion opposite to the second light hole portion, a through hole is provided on the cavity wall of the accommodating cavity opposite to the first light hole portion, a push rod is axially slidably provided on the first light hole portion, an anti-rotation structure is provided between the push rod and the fixing sleeve, the inner end of the push rod extends into the accommodating cavity through the through hole, a threaded hole is provided outwardly on the push rod, a core shaft is movably inserted into the second light hole portion, the outer end of the core shaft extends out of the second light hole portion and is provided with a handle, an external threaded portion is provided on the inner end of the core shaft, the external threaded portion is threadedly connected to the threaded hole, a convex ring is provided on the core shaft near the external threaded portion, the convex ring is tightly against the limiting step to form an axial limit.

[0009] Furthermore, the anti-rotation structure includes a limit groove axially opened on the top of the push rod, and a limit screw hole opened by the fixing sleeve opposite to the limit groove. The limit screw hole is provided with a push screw, and the lower diameter of the push screw is adapted to the width of the limit groove. The lower part of the push screw extends to the limit groove and is slidably connected to the limit groove along the axial direction of the push rod.

[0010] Further, the fixing sleeve comprises a threaded positioning sleeve and a connecting sleeve, the inner end of the positioning sleeve is fixed to the body, the connecting sleeve is arranged at the outer end of the positioning sleeve, the first light hole portion is arranged in the positioning sleeve, and the second light hole portion is arranged in the connecting sleeve;

[0011] The anti-rotation structure is arranged between the positioning sleeve and the ejector rod.

[0012] Furthermore, the inner end of the push rod is provided with a wedge-shaped plug corresponding to the tooth groove of the water pump gear.

[0013] Furthermore, the handle and the core shaft are connected and fixed by a cylindrical pin.

[0014] Furthermore, the accommodating cavity is a circular cavity corresponding to the water pump gear.

[0015] Furthermore, the main body is a cylindrical structure, and positioning plane portions are milled at the front, rear, left and right positions of the lower part of the outer side surface thereof.

[0016] Furthermore, the fixture further comprises a fixing seat, the fixing seat comprising a bottom plate and four vertical plates arranged on the bottom plate, the four vertical plates enclose a square cavity corresponding to the lower part of the body, and one of the vertical plates is threadedly connected to a screw;

[0017] The lower part of the body is matched and inserted into the square cavity, and the screws are tightly pressed against the corresponding positioning plane part to fix the body.

[0018] Compared with the prior art, the special combined clamp for disassembling and assembling a water pump described in the present invention has the following advantages:

[0019] (1) The present invention is specially used for clamping and fixing a water pump, and is simple to operate, convenient for clamping the water pump, saves labor, improves the efficiency of disassembling and assembling the water pump, and reduces the maintenance cost of the water pump.

[0020] (2) In the present invention, the accommodating cavity is a circular cavity corresponding to the gear of the water pump, thereby improving the clamping position accuracy and speed of the water pump.

[0021] (3) The four positioning planes on the main body and the matching fixing seat of the present invention can clamp and fix the main body even without a vise, thereby improving its applicability.

[0022] (4) The utility model is safe to operate and improves production efficiency. By repairing the water pump with a special combined clamp for disassembling and assembling the water pump, personal injury and damage to the water pump components can be avoided, single-person operation is achieved, and the safety and production efficiency of water pump repair are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a three-dimensional schematic diagram of a special combined clamp for disassembling and assembling a water pump according to this embodiment;

[0025] Figure 2 This is a cross-sectional view of a special combined clamp for disassembling and assembling a water pump according to this embodiment;

[0026] Figure 3 This is a three-dimensional schematic diagram of the fixing seat in this embodiment;

[0027] Figure 4 It is a schematic diagram of the connection and fixation between the main body and the fixing base in this embodiment.

[0028] Description of reference numerals:

[0029] 1-main body; 101-accommodating cavity; 102-positioning plane portion; 2-thrust rod; 21-limiting groove; 22-wedge-shaped plug; 3-thrust screw; 4-core shaft; 41-convex ring; 5-connecting sleeve; 6-cylindrical pin; 7-handle; 8-positioning sleeve; 9-bottom plate; 10-vertical plate; 11-screw. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] like Figure 1 , Figure 2 As shown, a special combined clamp for disassembling and assembling a water pump comprises a main body 1. The main body 1 is a cylindrical structure, and a circular accommodating cavity 101 corresponding to the water pump gear is opened on its top surface. A fixing sleeve is radially fixedly arranged outside the accommodating cavity 101, and the fixing sleeve comprises a positioning sleeve 8 and a connecting sleeve 5, wherein the positioning sleeve 8 is connected and fixed to the main body 1, and the connecting sleeve 5 is threadedly connected to the outer end of the positioning sleeve 8, that is, the end of the positioning sleeve 8 away from the main body 1.

[0032] The inner hole of the positioning sleeve 8 includes a first light hole portion and a threaded connection hole corresponding to the connecting sleeve 5, and the cavity wall of the accommodating cavity 101 is provided with a through hole directly opposite to the first light hole portion. The inner hole of the connecting sleeve 5 is a second light hole portion, and the diameter of the first light hole portion is larger than the diameter of the second light hole portion. The connecting sleeve 5 is threadedly installed in the threaded connection hole, and at this time, the second light hole portion forms a limiting step toward one end of the first light hole portion.

[0033] The first light hole part is provided with a push rod 2 for axial sliding, and an anti-rotation structure is provided between the push rod 2 and the positioning sleeve 8 to prevent the push rod 2 from rotating relative to the positioning sleeve 8, so that the push rod 2 can only move axially. The inner end of the push rod 2 extends into the accommodating chamber 101 through a through hole provided in the side wall of the accommodating chamber 101, and the inner end of the push rod 2 is provided with a wedge-shaped plug 22 corresponding to the tooth groove of the water pump gear, and the push rod 2 is provided with a threaded hole facing outward, that is, on its outer end surface. The inner hole of the second light hole part, i.e., the connecting sleeve 5, is movably equipped with a mandrel 4, and the outer end of the mandrel 4 extends out of the second light hole part and is provided with a handle 7, and the inner end of the mandrel 4 is provided with an external threaded part, which is threadedly connected to the threaded hole of the push rod 2, and the mandrel 4 is provided with a convex ring 41 near the external threaded part, and the convex ring 41 is close to the limiting step to form an axial limiting structure to limit the axial position of the mandrel 4.

[0034] The anti-rotation structure includes a limit groove 21 axially opened at the top of the push rod 2, and a limit screw hole opened by the positioning sleeve 8 opposite to the limit groove 21. The limit groove 21 is a rectangular groove, and the limit screw hole is equipped with a top screw 3. The lower part of the top screw 3 is a bare rod structure, and its diameter is adapted to the width of the limit groove 21. The lower part of the top screw 3 extends to the limit groove 21 and is slidably connected to the limit groove 21 along the axial direction of the push rod 2.

[0035] In the present invention, the handle 7 and the core shaft 4 are connected and fixed by a cylindrical pin 6 .

[0036] In the utility model, the body 1 is a cylindrical structure, and the front, rear, left and right positions of the lower outer side surface are respectively milled with positioning plane parts 102, so that the lower cross section of the body 1 is a square structure, which is convenient for vise fixation.

[0037] In order to improve the applicability of the clamp, the clamp also includes a fixed seat, the structure of the fixed seat is as follows Figure 3 As shown, it includes a bottom plate 9 and four vertical plates 10 arranged on the bottom plate 9. The four vertical plates 10 enclose and form a square cavity corresponding to the lower part of the body 1, and one of the vertical plates 10 is threadedly connected to a screw 11.

[0038] The assembly structure of the body and the fixed seat is as follows Figure 4 As shown, the lower part of the body 1 is matched and inserted into the square cavity of the fixing seat, and the screw 11 is pressed against the corresponding positioning plane part 102 to fix the body 1 in the square cavity, so that the body and the fixing seat are connected and fixed. Therefore, even in an environment without a vise, such as an outdoor environment, the clamp can be fixed to ensure the stability of clamping the water pump.

[0039] The operation process of the present invention is as follows: first, the fixture is fixed using a fixing seat or a vise, and then the gear of the water pump to be repaired is installed into the accommodating cavity 101 of the main body 1, and the handle 7 is turned to drive the core shaft 4 to rotate. Since an anti-rotation structure is provided between the push rod 2 and the positioning sleeve 8 which are threadedly connected to the core shaft 4, and an axial limiting structure limits the axial position of the core shaft 4, the push rod 2 can only move axially forward until the wedge-shaped plug of the push rod 2 is inserted into the tooth groove of the water pump gear and the top gear is tightened to fix the water pump.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A special combined clamp for disassembling and assembling a water pump, characterized by: The invention comprises a body (1), a receiving cavity (101) is provided on the top surface of the body (1), a fixing sleeve is arranged outside the receiving cavity (101), an inner hole of the fixing sleeve comprises a first light hole portion and a second light hole portion, the first light hole portion is arranged at an end of the fixing sleeve close to the body (1), and has a diameter greater than a diameter of the second light hole portion, a limiting step is formed at an end of the first light hole portion facing the second light hole portion, a through hole facing the first light hole portion is provided on the wall of the receiving cavity (101), a push rod (2) is arranged axially and slidably on the first light hole portion, and the An anti-rotation structure is arranged between the push rod (2) and the fixed sleeve. The inner end of the push rod (2) extends into the accommodating cavity (101) through the through hole. The push rod (2) is provided with a threaded hole facing outward. The second light hole portion is movably equipped with a core shaft (4). The outer end of the core shaft (4) extends out of the second light hole portion and is provided with a handle (7). The inner end of the core shaft (4) is provided with an external threaded portion, which is threadedly connected to the threaded hole. A convex ring (41) is provided near the external threaded portion of the core shaft (4). The convex ring (41) is tightly attached to the limiting step to form an axial limit.

2. A special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The anti-rotation structure comprises a limiting groove (21) axially opened at the top of the push rod (2), and a limiting screw hole opened by the fixing sleeve directly opposite to the limiting groove (21); the limiting screw hole is provided with a push screw (3); the lower diameter of the push screw (3) is adapted to the width of the limiting groove (21); the lower part of the push screw (3) extends to the limiting groove (21) and is slidably connected to the limiting groove (21) along the axial direction of the push rod (2).

3. A special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The fixing sleeve comprises a threadedly connected positioning sleeve (8) and a connecting sleeve (5), the inner end of the positioning sleeve (8) is fixed to the body (1), the connecting sleeve (5) is arranged at the outer end of the positioning sleeve (8), the first light hole portion is arranged in the positioning sleeve (8), and the second light hole portion is arranged in the connecting sleeve (5); The anti-rotation structure is arranged between the positioning sleeve (8) and the push rod (2).

4. A special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The inner end of the push rod (2) is provided with a wedge-shaped plug (22) corresponding to the tooth groove of the water pump gear.

5. The special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The handle (7) and the core shaft (4) are connected and fixed via a cylindrical pin (6).

6. A special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The accommodating cavity (101) is a circular cavity corresponding to the water pump gear.

7. The special combined clamp for disassembling and assembling a water pump according to claim 1, characterized in that: The body (1) is a cylindrical structure, and positioning plane portions (102) are milled at the front, rear, left and right positions of the lower portion of the outer side surface thereof.

8. A special combined clamp for disassembling and assembling a water pump according to claim 7, characterized in that: The clamp also includes a fixing seat, which includes a bottom plate (9) and four vertical plates (10) arranged on the bottom plate (9), the four vertical plates (10) enclose a square cavity corresponding to the lower part of the body 1, and one of the vertical plates (10) is threadedly connected to a screw (11); The lower part of the body (1) is inserted into the square cavity, and the screw (11) is pressed tightly against the corresponding positioning plane part (102) to fix the body (1).

Images