Clamp for assembling new energy automobile engine water pump

Abstract

The utility model relates to a clamp for assembling a water pump of a new energy automobile engine, which comprises a bottom plate provided with a core sleeve. The lower end of the core sleeve is sequentially provided with a radial protrusion and a lower protrusion. The upper part of the core sleeve has a conical section. A core rod is arranged in the core sleeve. A circular plate is arranged at the lower end of the core rod, and a first distance is reserved between the circular plate and the bottom plate. The core sleeve is sleeved with a lower expansion sleeve, and the upper end of the lower expansion sleeve is connected with an expansion section. Radial convex edges are arranged on the periphery of the lower end of the lower expansion sleeve, and a second distance is reserved between the radial convex edges and the radial protrusions. A supporting cover is arranged outside the lower expansion sleeve, the inner diameter of the upper portion and the inner diameter of the lower portion of the supporting cover are matched with the lower section of the lower expansion sleeve and the radial protruding edge of the lower expansion sleeve respectively, and the periphery of the supporting cover is connected with the radial protrusion of the core sleeve and the bottom plate. The upper end of the core rod is connected with a gland, and an upper expansion sleeve is arranged on the core sleeve between the gland and the lower expansion sleeve. The inner circle of the upper expansion sleeve is matched with the conical section of the upper portion of the core sleeve, longitudinal gaps are evenly distributed in the circumferential direction of the upper expansion sleeve, and the two ends of the longitudinal gaps are alternately connected together. By adopting the clamp, the production cost can be reduced, and the product quality can be improved.

Description

Technical Field

[0001] This utility model relates to a clamp. Specifically, it is a clamp used to position the pump body and pump cover of a water pump during the assembly of an engine water pump for a new energy vehicle. Background Technology

[0002] In the new energy vehicle engine water pump manufacturing industry, it's well known that the pump body and pump cover of a new energy vehicle engine water pump are short cylinders and annular rings, respectively. During assembly, fixtures are required for positioning. Because the inner diameters of the pump body and pump cover are different, with the pump body's inner diameter being smaller than the pump cover's, two sets of expansion sleeves are needed to position the pump body and pump cover separately during assembly. While using two sets of expansion sleeves can achieve proper positioning of the pump body and pump cover, the need for two sets not only increases equipment investment and production costs but also makes it difficult to achieve concentricity between the pump body and pump cover, compromising product quality. Utility Model Content

[0003] The problem this invention aims to solve is to provide a fixture for assembling water pumps for new energy vehicle engines. Using this fixture increases production costs but improves product quality.

[0004] The above-mentioned problems to be solved by this utility model are achieved by the following technical solution:

[0005] This utility model relates to a fixture for assembling a water pump for a new energy vehicle engine. It is characterized by: a base plate on which a core sleeve is mounted. The lower end of the core sleeve has radial protrusions and a lower protrusion arranged in a sealed manner around its circumference, with the lower protrusions forming a sealed fit with the base plate. The upper part of the core sleeve has a tapered section. Inside the core sleeve is a core rod in a sealed sliding fit with the core rod. The lower end of the core rod has an integral circular plate, with a first gap between the circular plate and the base plate. A lower expansion sleeve is fitted onto the core sleeve, with its lower inner circle and the lower outer circle of the core sleeve forming a sealed sliding fit, and its upper end connected to an expansion section. The lower end of the lower expansion sleeve has radial protrusions around its circumference, with a second gap between these radial protrusions and the radial protrusions of the core sleeve. A support cover is fitted over the lower expansion sleeve, with its upper and lower inner diameters respectively adapted to the lower section of the lower expansion sleeve and the radial protrusions, and its circumference connected to the radial protrusions of the core sleeve and the base plate. An upper expansion sleeve is fitted onto the conical section of the core sleeve. This upper expansion sleeve is a circular cover with longitudinal slits evenly distributed around its circumference. The two ends of the longitudinal slits are connected together alternately. The upper end of the core rod extends beyond the upper end of the core sleeve and is connected to a pressure cap, which leaves a third gap with the upper end of the core sleeve.

[0006] The pressure cap has a bolt integrated with it at its lower center, and the core rod has a screw hole at its upper end. The pressure cap is connected to the upper end of the core rod by means of the bolt on its lower side and the screw hole at the upper end of the core rod.

[0007] A further improvement of this utility model is that a washer is fitted on the bolt between the pressure cap and the upper end of the core rod, and there is a third gap between the washer and the upper end of the core sleeve.

[0008] A further improvement of this invention is that the inner circle of the upper end of the expansion section is adapted to the outer circle of the tapered section on the upper part of the core sleeve. The expansion section is formed by evenly distributing pressure blocks circumferentially at the upper end of the lower section of the expansion sleeve, wherein the lower part of the pressure blocks has concave portions on both the inner and outer sides.

[0009] A further improvement of this utility model is that the upper end of the support cover corresponds to the vertical middle of the concave part, and its periphery is connected to the radial protrusion of the core sleeve and the bottom plate by means of screws.

[0010] As can be seen from the above scheme, during operation, the gasket is first put on, the upper expansion sleeve is covered, and the upper pressure cap is screwed on in sequence. Then, using a separate hydraulic workstation, hydraulic oil is first injected between the upper surface of the radial protrusion and the support cover, causing the lower expansion sleeve to move downwards. Next, hydraulic oil is injected between the circular plate and the radial protrusion using the hydraulic workstation, thereby causing the upper expansion sleeve to move downwards via the core rod and pressure cap, tightly pressing the pump cover and pump body between the support cover and the upper expansion sleeve. Therefore, a single set of fixtures can achieve the positioning of the pump body and pump cover during assembly in new energy vehicle engines. Compared with the prior art, this not only requires less equipment investment and reduces costs, but also ensures the assembly quality of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a fixture for assembling a water pump for a new energy vehicle engine according to this utility model.

[0012] Figure 2 yes Figure 1 AA sectional view;

[0013] Figure 3 yes Figure 1 A top-down view;

[0014] Figure 4 yes Figure 2 A schematic diagram of the lower expansion sleeve 4, the concave part 5, and the pressure block 7 integrated in the middle;

[0015] Figure 5 yes Figure 4 AA sectional view;

[0016] Figure 6 yes Figure 4 A three-dimensional schematic diagram;

[0017] Figure 7 yes Figure 2 Schematic diagram of the upper expansion sleeve 8 structure;

[0018] Figure 8 yes Figure 7BB cross-sectional diagram;

[0019] Figure 9 yes Figure 7 A three-dimensional schematic diagram;

[0020] Figure 10 This is a schematic diagram of the pump body and pump cover structure of a water pump for a new energy vehicle engine. Detailed Implementation

[0021] like Figures 1-9 As shown, the fixture for assembling a water pump for a new energy vehicle engine of this utility model includes a base plate 21, on which a core sleeve 14 is provided. The lower end of the core sleeve 14 has radial protrusions 2 and a lower protrusion 17 sequentially machined circumferentially. The lower protrusion 17 is sealed to the base plate 21 by means of a sealing ring. The upper part of the core sleeve 14 has a tapered section, meaning the outer circle of the upper part of the core sleeve 14 is tapered, with a smaller outer diameter at the top and a larger outer diameter at the bottom. A core rod 12 is installed inside the core sleeve 14, and the core rod 12 slides in a sealed manner with the core sleeve 14. The lower end of the core rod 12 has a circular plate 19 integrally formed therewith. A first gap 18 is left between the circular plate 19 and the base plate 21, and its periphery slides in a sealed manner with the inner circle of the lower protrusion 17 by means of a sealing ring. The core sleeve 14 is fitted with a lower expansion sleeve 4. The inner circle of the lower section of the lower expansion sleeve 4 and the outer circle of the lower section of the core sleeve 14 are slidably fitted in a sealed manner by a sealing ring. The upper end of the expansion sleeve 4 is connected to an expansion section integrally formed therewith. The inner circle of the upper end of the expansion section is adapted to the outer circle of the tapered section of the upper part of the core sleeve 14. The expansion section is formed by evenly distributing pressure blocks 7 around the upper end of the lower section of the expansion sleeve 4. The lower inner and outer sides of the pressure blocks 7 are machined with concave portions 5. The lower end of the lower expansion sleeve 4 is machined with radial protrusions 3 around its perimeter. A second gap 16 is left between the radial protrusions 3 and the radial protrusions 2 of the core sleeve 14. A support cover 15 is provided on the outside of the lower expansion sleeve 4. The upper and lower inner diameters of the support cover 15 are adapted to the lower section of the lower expansion sleeve 4 and the radial protrusions 3 of the lower expansion sleeve 4, respectively. Its perimeter is connected to the radial protrusions 2 of the core sleeve 14 and the base plate 21 by screws 1. The upper end of the core rod 12 extends beyond the upper end of the core sleeve 14 and is connected to a pressure cap 10. An upper expansion sleeve 8 is fitted onto the core sleeve 14 between the pressure cap 10 and the lower expansion sleeve 4. The upper expansion sleeve 8 is a circular cover, the inner circle of which is adapted to the tapered section of the upper part of the core sleeve 14, and longitudinal slits 23 are evenly distributed around its circumference. The two ends of the longitudinal slits 23 are connected together alternately.

[0022] The lower center of the pressure cap 10 is machined with a bolt 9 integrally formed therewith, and the upper end of the core rod 12 is machined with a screw hole. The pressure cap 10 is connected to the upper end of the core rod 12 by means of the bolt 9 on its lower side and the screw hole at the upper end of the core rod 12.

[0023] A washer 11 is fitted on the bolt 9 between the pressure cap 10 and the upper end of the core rod 12, and a third gap 22 is left between the washer 11 and the upper end of the core sleeve 14.

[0024] The upper end of the support cover 15 corresponds to the vertical middle of the recessed part 5, and its periphery is connected to the radial protrusion 2 of the core sleeve 14 and the base plate 21 by means of screws 1.

[0025] like Figures 1-10 As shown, during operation, the pump body 6 is first placed on the upper section of the lower expansion sleeve 4, and the pump body 6 is brought into contact with the upper end of the support cover 15. Then, the pump cover 13 is placed on the pump body 6, and the inner hole of the pump cover 13 is brought into contact with the lower outer wall of the upper expansion sleeve 8. Next, using a separate hydraulic workstation, hydraulic oil is first injected between the upper part of the radial protrusion +3 and the support cover 15, causing the lower expansion sleeve 4 to move downwards. Then, hydraulic oil is injected between the circular plate 19 and the radial protrusion 2 using the hydraulic workstation, thereby causing the upper expansion sleeve 8 to move downwards via the core rod 12 and the pressure cap 10. Finally, the pump body 6 and the pump cover 13 are tightly positioned on the outer side of the upper section of the lower expansion sleeve 4 and the outer side of the lower end of the upper expansion sleeve 8, and the pump body 6 and the pump cover 13 are connected together with four bolts. This achieves the positioning during the assembly of the water pump for a new energy vehicle engine.

Claims

1. A fixture for assembling a water pump for a new energy vehicle engine, characterized in that: Includes a base plate (21), on which a core sleeve (14) is mounted; the lower end of the core sleeve (14) has radial protrusions (2) and lower protrusions (17) in sequence, the lower protrusions (17) being sealed to the base plate (21) around its perimeter; the upper part of the core sleeve (14) has a tapered section; the core sleeve (14) contains a core rod (12) which is sealed to the core rod (12), the lower end of which has a circular plate (19) integral with it, the circular plate (19) having a first gap (18) between it and the base plate (21); a lower expansion sleeve (4) is fitted on the core sleeve (14), the lower inner circle of the lower expansion sleeve (4) is sealed to the lower outer circle of the core sleeve (14), and its upper end is connected to an expansion section; the lower end of the lower expansion sleeve (4) has radial protrusions (3) around its perimeter, the radial... There is a second gap (16) between the convex edge (3) and the radial protrusion (2) of the core sleeve (14); the lower expansion sleeve (4) is covered with a support cover (15), the upper and lower inner diameters of which are adapted to the lower section of the lower expansion sleeve (4) and the radial convex edge (3), and its periphery is connected to the radial protrusion (2) of the core sleeve (14) and the bottom plate (21); the tapered section of the core sleeve (14) is covered with an upper expansion sleeve (8), which is a round cover with longitudinal gaps (23) evenly distributed around its periphery; the two ends of the longitudinal gaps (23) are connected together alternately; the upper end of the core rod (12) extends out of the upper end of the core sleeve (14) and is connected to a pressure cap (10), and a third gap (22) is left between the pressure cap (10) and the upper end of the core sleeve (14).

2. The fixture for assembling a water pump for a new energy vehicle engine according to claim 1, characterized in that: The pressure cap (10) has a bolt (9) integrally formed with it at its lower center, and the core rod (12) has a screw hole at its upper end. The pressure cap (10) is connected to the upper end of the core rod (12) by means of the bolt (9) below it and the screw hole at the upper end of the core rod (12).

3. The fixture for assembling a water pump for a new energy vehicle engine according to claim 2, characterized in that: A washer (11) is fitted on the bolt (9) between the cap (10) and the upper end of the core rod (12), and there is the third gap (22) between the washer (11) and the upper end of the core sleeve (14).

4. The fixture for assembling a water pump for a new energy vehicle engine according to claim 1, characterized in that: The upper inner circle of the expansion section is adapted to the outer circle of the tapered section of the upper part of the core sleeve (14); the expansion section is formed by evenly distributing pressure blocks (7) around the upper part of the lower section of the expansion sleeve (4), and the lower inner and outer sides of the pressure blocks (7) have concave portions (5).

5. The fixture for assembling a water pump for a new energy vehicle engine according to claim 4, characterized in that: The upper end of the support cover (15) corresponds to the vertical middle of the recess (5), and its periphery is connected to the radial protrusion (2) of the core sleeve (14) and the base plate (21) by means of screws (1).

Images